WO2009147713A1 - Video display system - Google Patents

Video display system Download PDF

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Publication number
WO2009147713A1
WO2009147713A1 PCT/JP2008/060161 JP2008060161W WO2009147713A1 WO 2009147713 A1 WO2009147713 A1 WO 2009147713A1 JP 2008060161 W JP2008060161 W JP 2008060161W WO 2009147713 A1 WO2009147713 A1 WO 2009147713A1
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WO
WIPO (PCT)
Prior art keywords
video
video display
display device
supply device
control unit
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Application number
PCT/JP2008/060161
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French (fr)
Japanese (ja)
Inventor
一暁 坂元
Original Assignee
Necディスプレイソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Necディスプレイソリューションズ株式会社 filed Critical Necディスプレイソリューションズ株式会社
Priority to PCT/JP2008/060161 priority Critical patent/WO2009147713A1/en
Priority to JP2010515683A priority patent/JP5170242B2/en
Publication of WO2009147713A1 publication Critical patent/WO2009147713A1/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006Details of the interface to the display terminal

Definitions

  • the present invention relates to a video display system that outputs a video of a video supply device to a video display device.
  • video from video supply devices that supply video such as personal computers is often output to video display devices.
  • video display devices For example, when a presentation or the like is performed using a personal computer, the video displayed on the personal computer is displayed on the personal computer on an external video display device such as a large liquid crystal monitor or projector so that many people can share the video. Output the current video.
  • a personal computer will be described as an example of the video supply device, but various devices that output video signals other than the personal computer can be considered as the video supply device.
  • the personal computer can confirm whether or not the personal computer and the external video display device are physically correctly connected, and a technique for realizing this is disclosed in Japanese Patent Laid-Open No. 2007-225980.
  • a polling signal is transmitted from a personal computer to an external video display device. If there is a reply to the polling signal from the external video display device, the user can confirm that the personal computer and the external video display device are physically connected correctly.
  • the above-described technique only confirms the physical connectivity between the personal computer and the external video display device, and the internal conditions for actually outputting the video to the external video display device. It is not done until confirmation.
  • the user After confirming the physical connection, the user performs an operation to switch the video output destination from the personal computer to an external video display device. No video is displayed on the video display device, or it is not displayed correctly. In this case, if the user is unfamiliar with the operation of the personal computer or the video display device, it is difficult to specify the cause.
  • the video output destination of the personal computer is limited to the external video display device even though the video is not output to the external video display device. Thus, no video is displayed on the personal computer or the external video display device. In this case, the user cannot operate the personal computer.
  • An object of the present invention is to provide a video display system that makes it easy for a user to output a video of a video supply device to an external video display device.
  • a video display system comprising: a video display device; and a video supply device that supplies a video signal to be output to the video display device, wherein the connection state between the video display device and the video supply device can be confirmed,
  • the video supply device transmits a connection confirmation command for confirming a connection state with the video display device and an operating environment of the video display device to the video display device, and then the connection transmitted from the video display device.
  • the video supply device side control unit When receiving a response command indicating the state and the operating environment, the video supply device side control unit for generating a video signal according to the received content, When the video display device receives a connection confirmation command from the video supply device side control unit, the video display device generates a response command indicating a connection state and its operating environment and transmits the response command to the video supply device side control unit A side control unit is provided.
  • a connection confirmation command for confirming the connection state and operating environment with the video supply device is received from the video supply device, a response command indicating the connection state with the video supply device and its own operating environment is generated.
  • a video display device side controller for transmitting to the video supply device.
  • a connection confirmation command for confirming a connection state and an operating environment with the video display device is transmitted to the video display device, and then a response command indicating the connection state and the operating environment transmitted from the video display device is received. Then, the video supply apparatus side control part which produces
  • the video display system includes a video display device and a video supply device that supplies a video signal to be output to the video display device, and the connection state between the video display device and the video supply device is confirmed.
  • a video display method capable of A process of transmitting a connection confirmation command for confirming a connection state with the video display device and an operating environment of the video display device to the video display device;
  • the video display device receives a connection confirmation command from the video supply device side control unit, a process of generating a response command indicating a connection state and its operating environment and transmitting the response command to the video supply device side control unit;
  • the video supply device receives a response command indicating a connection state and an operating environment transmitted from the video display device, the video supply device has a process of generating a video signal corresponding to the received content.
  • the video supply device that constitutes the video display system together with the video display device, A connection confirmation command for confirming a connection state and an operating environment with the video display device is transmitted to the video display device, and then a response command indicating the connection state and the operating environment transmitted from the video display device is received. Then, a function of generating a video signal corresponding to the received content is realized.
  • the present invention is configured as described above, when the video output destination is switched from the video supply device to the external video display device, the video is not displayed at all on the external video display device or displayed correctly. If not, the user can identify the cause.
  • FIG. 1 It is a block diagram which shows 1st Embodiment of the video display system of this invention.
  • 3 is a flowchart for explaining the operation of the first embodiment.
  • the video display system shown in FIG. 1 when the video output destination is switched to the video display device, the video is displayed on the video display unit of the personal computer. The operation in the case where the displayed video is correctly output by the video display device is shown.
  • 2 is a flowchart for explaining the operation of the first embodiment, in the video display system shown in FIG. 1, the frequency of the video signal transmitted from the personal computer is a frequency at which normal display can be performed in the video output unit. The operation when it is out of range is shown. 2 is a flowchart for explaining the operation of the first embodiment, and in the video display system shown in FIG.
  • the selection of the external input terminal of the video display device is other than the external input terminal to which the personal computer is connected. It shows the operation when it is.
  • 3 is a flowchart for explaining the operation of the first embodiment, and shows the operation when the personal computer and the video display device are not physically connected in the video display system shown in FIG. 1. It is a figure for demonstrating the video display apparatus control application which the personal computer shown in FIG. 1 has, and the icon for operation for operating the video display apparatus control application is displayed on the video display part. However, it shows.
  • FIG. 6 is a flowchart for explaining the operation of the second embodiment. In the video display system shown in FIG. 1, the user operates the video display device operation application, and the external input terminal of the video display device is connected to a personal computer. The operation when switching to an external input terminal connected to is shown.
  • FIG. 1 is a block diagram showing a first embodiment of a video display system of the present invention.
  • the video display system includes a personal computer 1101 which is a video supply device, and a video display device 1201 connected to the personal computer 1101 via a signal line 1301.
  • the signal line 1301 includes a video signal line 1302 and a DDC (Display Data Channel) control line 1303.
  • the video display device 1201 corresponds to the DDC standard.
  • the DDC standard exchanges information about video display such as resolution supported by the video display device between the video display device and the personal computer, and realizes plug and play of the video display device connected to the personal computer. It is a standard for.
  • the personal computer 1101 transmits a connection confirmation command for confirming the connection state with the video display device 1201 and the operating environment of the video display device 1201 to the video display device 1201 via the DDC control line 1303.
  • the video display device 1201 Upon receiving the connection confirmation command transmitted from the personal computer 1101, the video display device 1201 transmits a response command indicating the connection state with the personal computer 1101 and its own operating environment to the personal computer 1101 via the DDC control line 1303. .
  • the personal computer 1101 recognizes the connection status with the video display device 1201 and the operating environment with the video display device 1201 based on whether or not the response command transmitted from the video display device 1201 has been received and the content indicated by the transmitted response command.
  • a personal computer 1101 of the video display system shown in FIG. 1 includes a UI (user interface) unit 1102, a control unit 1103 that is a video supply device side control unit, a monitor IF (interface) unit 1104, and a video display unit 1105. And a storage unit 1106.
  • UI user interface
  • control unit 1103 that is a video supply device side control unit
  • monitor IF interface
  • video display unit 1105. and a storage unit 1106.
  • the UI unit 1102 receives an operation on the personal computer 1101 from the user, converts the received operation into a control signal, and transmits the control signal to the control unit 1103.
  • the control unit 1103 controls the operation of the personal computer 1101, and typical operations include the following. (1): The control unit 1103 controls each block according to the control signal transmitted from the UI unit 1102. (2): The control unit 1103 generates a video signal, displays the generated video signal as a video on the video display unit 1105, or transmits the video signal to the video display device 1201. (3): The control unit 1103 generates a connection confirmation command and transmits it to the video display device 1201. Also, the response command transmitted from the video display device 1201 is received, and a video signal is generated according to the content indicated in the response command.
  • the monitor IF unit 1104 performs mediation for transmitting the video signal and the connection confirmation command transmitted from the control unit 1103 to the video display device 1201 via the signal line 1301. Further, mediation is performed for transmitting a signal or response command transmitted from the video display device 1201 via the signal line 1301 to the control unit 1103.
  • the video display device 1201 of the video display system shown in FIG. 1 includes a video processing unit 1202, an OSD processing unit 1203, a video output unit 1204, a control unit 1205 which is a video display device side control unit, and a plurality of external inputs. Terminals 1206a to 1206n are provided.
  • the OSD is a function that displays a menu or guide for setting the video display device on the video, and allows the user to operate the video display device using the menu or guide. These menus and guides are displayed superimposed on video output from a personal computer or the like, and the user operates with buttons provided on the front and side surfaces of the video display device main body.
  • the video processing unit 1202 receives the video signal transmitted from the personal computer 1101 via the external input terminals 1206a to 1206n, and causes the video output unit 1204 to display the video via the OSD processing unit 1203. Further, it is determined whether the received video signal is a video signal that can be normally displayed by the video output unit 1204, and the result is notified to the control unit 1205.
  • the OSD processing unit 1203 superimposes a menu or guide on the video signal transmitted from the video processing unit 1202.
  • the control unit 1205 controls the operation of the video display device 1201, and typical operations include the following.
  • the control unit 1205 receives the connection confirmation command transmitted from the personal computer 1101 via the external input terminals 1206a to 1206n, generates a response command for the connection confirmation command, and generates the generated response command for the external input terminals 1206a to 1206n.
  • the control unit 1205 selects and switches an external input terminal that receives an input of a video signal.
  • External input terminals 1206a to 1206n mediate transmission / reception of video signals and the like with the personal computer 1101.
  • a function for switching the video output destination between the video display unit 1105 and the video output unit 1204 is assigned to the function key of the keyboard of the personal computer 1101.
  • FIG. 2 is a flowchart for explaining the operation of the first embodiment.
  • the video output destination is switched to the video display device 1201 in the video display system shown in FIG. Shows the operation when the image is correctly output by the video display device 1201.
  • the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 201).
  • the UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
  • the control unit 1103 that has received the control signal transmitted from the UI unit 1102 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (step 202).
  • control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
  • the video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, since the received video signal is a video signal that can be normally displayed by the video output unit 1204, the control unit 1205 is notified of this. Then, the video signal is subjected to processing such as scaling, and the video is displayed on the video output unit 1204 via the OSD processing unit 1203 (STEP 203).
  • control unit 1103 of the personal computer 1101 transmits a connection confirmation command for confirming the connection state from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 204).
  • control unit 1103 of the personal computer 1101 waits to receive a command from the video display device 1201 for a certain time after transmitting the connection confirmation command (STEP 205).
  • the control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 204 (STEP 206).
  • control unit 1205 transmits a connection completion command, which is a response command indicating that the personal computer 1101 and the video output device 1201 are normally connected, to the personal computer 1101 via the DDC control line 1303 (STEP 207). ).
  • the control unit 1103 that has received the connection completion command transmitted from the video display device 1201 via the monitor IF unit 1104 normally connects the personal computer 1101 and the video display device 1201, and displays video on the video output device 1201. (STEP 208).
  • FIG. 3 is a flowchart for explaining the operation of the first embodiment.
  • the frequency of the video signal transmitted from the personal computer 1101 is normal at the video output unit 1204. The operation when the display is outside the range of frequencies that can be displayed is shown.
  • the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 301).
  • the UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
  • control unit 1103 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (STEP 302).
  • control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
  • the video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204.
  • the frequency of the received video signal is outside the range of frequencies that can be normally displayed by the video output unit 1204, and is a video signal that cannot be normally displayed by the video output unit 1204. Therefore, the video processing unit 1202 notifies the control unit 1205 to that effect.
  • This notification indicates the frequency range of the video signal that can be normally displayed by the video output unit 1204.
  • the video processing unit 1202 performs processing such as scaling on the video signal and causes the video output unit 1204 to display the video via the OSD processing unit 1203. In this case, since the frequency of the video signal transmitted from the personal computer 1101 is outside the frequency range supported by the video output unit 1204, an abnormal video is displayed (STEP 303).
  • control unit 1103 of the personal computer 1101 transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 304).
  • control unit 1103 waits for a command reception from the video display device 1201 for a predetermined time (STEP 305).
  • the control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 304 (STEP 306).
  • control unit 1205 performs DDC control on an out-of-range command that is a response command indicating that the frequency of the video signal received from the personal computer 1101 is outside the range of frequencies that can be normally displayed by the video output unit 1204. Transmission to the personal computer 1101 is performed via the line 1303 (STEP 307).
  • the out-of-range command indicates the frequency range of the video signal that can be normally displayed by the video output unit 1204.
  • the control unit 1103 of the personal computer 1101 receives the out-of-range command transmitted from the video display device 1201 via the monitor IF unit 1104 (STEP 308).
  • control unit 1103 sends the video signal switched to a frequency within the frequency range indicated in the received out-of-range command from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302. Send. (STEP309).
  • control unit 1103 again transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 310).
  • control unit 1103 waits for a command reception from the video display device 1201 for a certain time (STEP 311).
  • the control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 310 (STEP 312).
  • control unit 1205 transmits a connection completion command, which is a response command indicating that the personal computer 1101 and the video output device 1201 are normally connected, to the personal computer 1101 via the DDC control line 1303 (STEP 313). ).
  • the control unit 1103 that has received the connection completion command transmitted from the video display device 1201 via the monitor IF unit 1104 normally connects the personal computer 1101 and the video display device 1201, and displays video on the video output device 1201. (STEP 314).
  • FIG. 4 is a flowchart for explaining the operation of the first embodiment.
  • the selection of the external input terminal of the video display device 1201 is connected to a personal computer. The operation when it is other than the external input terminal is shown.
  • the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 401).
  • the UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
  • control unit 1103 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (STEP 402).
  • control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
  • a video signal is input to the video display device 1201, but since an external input terminal to which the personal computer 1101 is connected is not selected, the video is displayed on the video output unit 1204 of the video display device 1201. (STEP 403).
  • control unit 1103 of the personal computer 1101 transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 404).
  • control unit 1103 waits for a command reception from the video display device 1201 for a certain time after transmitting the connection confirmation command (STEP 405).
  • the control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 404 (STEP 406).
  • control unit 1205 Upon receiving the connection confirmation command from the personal computer 1101, the control unit 1205 switches the selection of the external input terminal to the external input terminal to which the personal computer 1101 is connected (STEP 407).
  • the video processing unit 1202 receives the video signal transmitted from the personal computer 1101.
  • the video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, since the received video signal is a video signal that can be normally displayed by the video output unit 1204, the control unit 1205 is notified of this. Then, the video signal is subjected to processing such as scaling, and the video is displayed on the video output unit 1204 via the OSD processing unit 1203 (STEP 408).
  • control unit 1205 transmits a connection completion command, which is a response command indicating that the personal computer 1101 and the video output device 1201 are normally connected, to the personal computer 1101 via the DDC control line 1303 (STEP 409). .
  • the control unit 1103 that has received the connection completion command transmitted from the video display device 1201 via the monitor IF unit 1104 normally connects the personal computer 1101 and the video display device 1201, and displays video on the video output device 1201. (STEP 410).
  • FIG. 5 is a flowchart for explaining the operation of the first embodiment.
  • the personal computer 1101 and the video display device 1201 are not physically connected. The operation is shown.
  • the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 501).
  • the UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
  • control unit 1103 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (STEP 502).
  • control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
  • the image display device 1201 does not display an image.
  • control unit 1103 of the personal computer 1101 transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 503).
  • control unit 1103 waits for receiving a command from the video display device 1201 for a certain time after transmitting the connection confirmation command (STEP 504).
  • the connection confirmation command transmitted from the personal computer 1101 does not arrive at the video display device 1201. Therefore, the personal computer 1101 does not receive the command from the video display device 1201, and the command reception waiting state times out (STEP 505).
  • control unit 1103 When the command reception waiting state times out, the control unit 1103 turns on the video output of the video display unit 1105 and switches off the video output to the monitor IF unit 1104 (STEP 506).
  • control unit 1103 causes the video display unit 1105 to display a message or the like informing the user that the video display device 1201 is not normally connected to the personal computer 1101 (STEP 507).
  • the user transmits the connection confirmation command after switching the video output destination.
  • the result of confirming the connection by transmitting the connection confirmation command first is the result.
  • the video output may be switched based on
  • the difference between the video display system of this embodiment and the video display system shown in the first embodiment is that the storage unit 1106 has a video display device control application for the personal computer 1101 to control the video display device 1201. It is a point.
  • the video display device control application has a function of turning on / off the power of the video display device 1201 and a function of switching an external input terminal of the video display device 1201.
  • FIG. 6 is a diagram for explaining a video display device control application included in the personal computer 1101 shown in FIG. 1, and an operation icon 601 for operating the video display device control application is displayed as a video. The part displayed in the part 1105 is shown.
  • the operation icon 601 includes an external input terminal switching icon 602 for switching the external input terminal of the video display device 1201 and an external input terminal list 603.
  • the external input terminal list 603 of the video display device 1201 is displayed.
  • device names of devices that are connected to the video display device 1201 and that supply video to be output to the video display device 1201 are listed.
  • an external input terminal switching command for instructing switching of the external input terminal is transmitted to the video display device 1201.
  • the video display device 1201 that has received the external input terminal switching command selects the external input terminal to which the selected device is connected as the external input terminal that receives the video signal.
  • FIG. 7 is a flowchart for explaining the operation of the second embodiment.
  • the user operates the video display device operation application and the external of the video display device 1201. The operation when the input terminal is switched to the external input terminal to which the personal computer 1101 is connected is shown.
  • the UI unit 1102 that has received a click on the external input terminal switching icon 602 from the user converts the received content into a control signal, and transmits the control signal to the control unit 1103.
  • the control unit 1103 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 causes the video display device operation application stored in the storage unit 1106 to perform processing. As a result, the external input terminal list 603 is displayed in the video display unit 1105. Is displayed.
  • the UI unit 1202 When the user selects “computer” indicating personal computer 1101 from the external input terminal list 603 (STEP 701), the UI unit 1202 that has received the selection converts the received content into a control signal, and the control signal is converted into the control signal. Transmit to the control unit 1103.
  • control unit 1103 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 sends an external input terminal switching command for instructing switching of the external input terminal from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303. Transmit (STEP 702).
  • control unit 1103 waits to receive a command from the video display device 1201 for a certain time (STEP 703).
  • the control unit 1205 of the video display device 1201 receives the external input terminal switching command transmitted from the personal computer 1101 in STEP 702 (STEP 704).
  • control unit 1205 switches the selection of the external input terminal to the external input terminal to which the personal computer 1101 is connected (STEP 705).
  • the control unit 1205 transmits an external input terminal switching completion command indicating that the switching of the external input terminal is completed to the personal computer 1101 via the DDC control line 1303 (STEP 706).
  • the external input terminal switching completion command includes information indicating that the external input terminal to which the personal computer 1101 is connected is the currently selected external input terminal.
  • the control unit 1103 of the personal computer 1101 receives the external input terminal switching completion command transmitted from the video display device 1201 via the monitor IF unit 1104 (STEP 707), and the external input terminal selected by the video display device 1201 is selected.
  • the video output of the video display unit 1105 is turned off and the video output of the monitor IF unit 1104 is switched on.
  • control unit 1103 transmits the video signal from the monitor IF unit 1104 to the video processing unit 1202 of the video display device 1201 via the video signal line 1302 (STEP 708).
  • the video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, since the received video signal is a video signal that can be normally displayed by the video output unit 1204, the control unit 1205 is notified of this. Then, the video signal is subjected to processing such as scaling, and the video is displayed on the video output unit 1204 via the OSD processing unit 1203 (STEP 709).
  • the processing in the personal computer or video display device can be read by the personal computer or video display device in addition to the above-described dedicated hardware.
  • the program may be recorded on a simple recording medium, and the program recorded on the recording medium may be read and executed by a personal computer or a video display device.
  • the recording medium that can be read by a personal computer or a video display device refers to a removable recording medium such as a floppy disk, a magneto-optical disk, a DVD, or a CD, and an HDD built in the personal computer or the video display device. .

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Abstract

A video display system includes a video display device and a video supply device which supplies a video signal of a video to be outputted from the video display device. The video display system can check the connection state between the video display device and the video supply device. The video supply device has a video supply device side control unit which transmits to the video display device, a connection check command for checking the connection state with the video display device and the operation environment of the video display device, then receives a response command indicating the connection state and the operation environment transmitted from the video display device, and generates a video signal in accordance with the received content. The video display device has a video display device side control unit which receives the connection check command from the video supply device side control unit, generates a response command indicating the connection state and the operation environment of itself, and transmits the command to the video supply device side control unit.

Description

映像表示システムVideo display system
 本発明は、映像供給装置の映像を映像表示装置に出力させる映像表示システムに関する。 The present invention relates to a video display system that outputs a video of a video supply device to a video display device.
 近年、プレゼンテーション等において、パーソナルコンピュータをはじめとする映像を供給する映像供給装置からの映像を映像表示装置に出力させることが多くなってきている。例えば、パーソナルコンピュータを利用してプレゼンテーション等を行う場合、パーソナルコンピュータに表示されている映像を多くの人で共有できるように、大型液晶モニタやプロジェクタ等の外部の映像表示装置にパーソナルコンピュータに表示されている映像を出力させる。 In recent years, in presentations and the like, video from video supply devices that supply video such as personal computers is often output to video display devices. For example, when a presentation or the like is performed using a personal computer, the video displayed on the personal computer is displayed on the personal computer on an external video display device such as a large liquid crystal monitor or projector so that many people can share the video. Output the current video.
 以下、映像供給装置としてパーソナルコンピュータを例にして説明するが、映像供給装置は、パーソナルコンピュータ以外にも、映像信号を出力する様々な装置が考えられる。 Hereinafter, a personal computer will be described as an example of the video supply device, but various devices that output video signals other than the personal computer can be considered as the video supply device.
 パーソナルコンピュータに表示されている映像を外部の映像表示装置に出力させる場合、ユーザーは、まず、パーソナルコンピュータ等と外部の映像表示装置とを物理的に正しく接続する必要がある。 When outputting an image displayed on a personal computer to an external image display device, the user must first physically connect the personal computer or the like to the external image display device correctly.
 そこで、パーソナルコンピュータと外部の映像表示装置とが物理的に正しく接続されているかどうかをパーソナルコンピュータで確認できることが望まれ、これを実現する技術が特開2007-225980号公報に開示されている。 Therefore, it is desired that the personal computer can confirm whether or not the personal computer and the external video display device are physically correctly connected, and a technique for realizing this is disclosed in Japanese Patent Laid-Open No. 2007-225980.
 この技術では、パーソナルコンピュータから外部の映像表示装置へポーリング信号を送信する。外部の映像表示装置からそのポーリング信号に対する返信があれば、ユーザーは、パーソナルコンピュータと外部の映像表示装置とが物理的に正しく接続されていることが確認できる。 In this technology, a polling signal is transmitted from a personal computer to an external video display device. If there is a reply to the polling signal from the external video display device, the user can confirm that the personal computer and the external video display device are physically connected correctly.
 しかしながら、上述した技術では、パーソナルコンピュータと外部の映像表示装置との物理的な接続性だけを確認しているに過ぎず、実際に外部の映像表示装置に映像を出力させるための内部的な条件の確認までは行っていない。 However, the above-described technique only confirms the physical connectivity between the personal computer and the external video display device, and the internal conditions for actually outputting the video to the external video display device. It is not done until confirmation.
 ユーザーは、物理的な接続を確認した後に、映像の出力先をパーソナルコンピュータから外部の映像表示装置へ切り替える操作を行うが、この際に、切り替え先の選択や映像信号の選択を誤ると、外部の映像表示装置に映像が全く表示されない、もしくは、正しく表示されないこととなる。この場合、ユーザ―がパーソナルコンピュータや映像表示装置の操作に不慣れだと、その原因を特定することは難しい。 After confirming the physical connection, the user performs an operation to switch the video output destination from the personal computer to an external video display device. No video is displayed on the video display device, or it is not displayed correctly. In this case, if the user is unfamiliar with the operation of the personal computer or the video display device, it is difficult to specify the cause.
 また、ユーザ―が物理的な接続を確認した後、外部の映像表示装置に映像が出力されていないにもかかわらず、パーソナルコンピュータの映像の出力先を外部の映像表示装置のみにしてしまった場合、パーソナルコンピュータにも外部の映像表示装置にも映像が表示されないことになる。この場合、ユーザーは、パーソナルコンピュータを操作することができなくなってしまう。 Also, after the user confirms the physical connection, the video output destination of the personal computer is limited to the external video display device even though the video is not output to the external video display device. Thus, no video is displayed on the personal computer or the external video display device. In this case, the user cannot operate the personal computer.
 本発明は、ユーザーが映像供給装置の映像を外部の映像表示装置に出力させることを容易にする映像表示システムを提供することを目的とする。 An object of the present invention is to provide a video display system that makes it easy for a user to output a video of a video supply device to an external video display device.
 上記目的を達成するために本発明は、
 映像表示装置と、該映像表示装置に出力させる映像の映像信号を供給する映像供給装置とを具備し、前記映像表示装置と前記映像供給装置との接続状態を確認できる映像表示システムであって、
 前記映像供給装置は、前記映像表示装置との接続状態および前記映像表示装置の動作環境を確認するための接続確認コマンドを前記映像表示装置へ送信し、その後、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する映像供給装置側制御部を備え、
 前記映像表示装置は、前記映像供給装置側制御部からの接続確認コマンドを受信すると、接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置側制御部へ送信する映像表示装置側制御部を備えることを特徴とする。
In order to achieve the above object, the present invention provides:
A video display system comprising: a video display device; and a video supply device that supplies a video signal to be output to the video display device, wherein the connection state between the video display device and the video supply device can be confirmed,
The video supply device transmits a connection confirmation command for confirming a connection state with the video display device and an operating environment of the video display device to the video display device, and then the connection transmitted from the video display device. When receiving a response command indicating the state and the operating environment, the video supply device side control unit for generating a video signal according to the received content,
When the video display device receives a connection confirmation command from the video supply device side control unit, the video display device generates a response command indicating a connection state and its operating environment and transmits the response command to the video supply device side control unit A side control unit is provided.
 また、映像供給装置とともに映像表示システムを構成する映像表示装置において、
 前記映像供給装置から、該映像供給装置との接続状態および動作環境を確認するための接続確認コマンドを受信した際に、前記映像供給装置との接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置へ送信する映像表示装置側制御部を備える。
In addition, in the video display device constituting the video display system together with the video supply device,
When a connection confirmation command for confirming the connection state and operating environment with the video supply device is received from the video supply device, a response command indicating the connection state with the video supply device and its own operating environment is generated. And a video display device side controller for transmitting to the video supply device.
 また、映像表示装置とともに映像表示システムを構成する映像供給装置において、
 前記映像表示装置へ、該映像表示装置との接続状態および動作環境を確認するための接続確認コマンドを送信し、その後、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する映像供給装置側制御部を備える。
In addition, in the video supply device that constitutes the video display system together with the video display device,
A connection confirmation command for confirming a connection state and an operating environment with the video display device is transmitted to the video display device, and then a response command indicating the connection state and the operating environment transmitted from the video display device is received. Then, the video supply apparatus side control part which produces | generates the video signal according to the received content is provided.
 また、映像表示装置と、該映像表示装置に出力させる映像の映像信号を供給する映像供給装置とを具備する映像表示システムで行われ、前記映像表示装置と前記映像供給装置との接続状態を確認できる映像表示方法であって、
 前記映像供給装置が、前記映像表示装置との接続状態および前記映像表示装置の動作環境を確認するための接続確認コマンドを前記映像表示装置へ送信する処理と、
 前記映像表示装置が、前記映像供給装置側制御部からの接続確認コマンドを受信すると、接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置側制御部へ送信する処理と、
 前記映像供給装置が、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する処理とを有する。
The video display system includes a video display device and a video supply device that supplies a video signal to be output to the video display device, and the connection state between the video display device and the video supply device is confirmed. A video display method capable of
A process of transmitting a connection confirmation command for confirming a connection state with the video display device and an operating environment of the video display device to the video display device;
When the video display device receives a connection confirmation command from the video supply device side control unit, a process of generating a response command indicating a connection state and its operating environment and transmitting the response command to the video supply device side control unit;
When the video supply device receives a response command indicating a connection state and an operating environment transmitted from the video display device, the video supply device has a process of generating a video signal corresponding to the received content.
 また、映像供給装置とともに映像表示システムを構成する映像表示装置に、
 前記映像供給装置から、該映像供給装置との接続状態および動作環境を確認するための接続確認コマンドを受信した際に、前記映像供給装置との接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置へ送信する機能を実現させる。
In addition, in the video display device constituting the video display system together with the video supply device,
When a connection confirmation command for confirming the connection state and operating environment with the video supply device is received from the video supply device, a response command indicating the connection state with the video supply device and its own operating environment is generated. Thus, the function of transmitting to the video supply device is realized.
 また、映像表示装置とともに映像表示システムを構成する映像供給装置に、
 前記映像表示装置へ、該映像表示装置との接続状態および動作環境を確認するための接続確認コマンドを送信し、その後、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する機能を実現させる。
In addition, the video supply device that constitutes the video display system together with the video display device,
A connection confirmation command for confirming a connection state and an operating environment with the video display device is transmitted to the video display device, and then a response command indicating the connection state and the operating environment transmitted from the video display device is received. Then, a function of generating a video signal corresponding to the received content is realized.
 本発明は、以上説明したように構成されているので、映像の出力先を映像供給装置から外部の映像表示装置に切り替えた際、外部の映像表示装置に映像が全く表示されない、もしくは、正しく表示されない場合、ユーザ―は、その原因を特定することができる。 Since the present invention is configured as described above, when the video output destination is switched from the video supply device to the external video display device, the video is not displayed at all on the external video display device or displayed correctly. If not, the user can identify the cause.
本発明の映像表示システムの第1の実施の形態を示すブロック図である。It is a block diagram which shows 1st Embodiment of the video display system of this invention. 第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、映像の出力先を映像表示装置に切り替えた際、パーソナルコンピュータの映像表示部に表示されている映像が正しく映像表示装置で出力される場合の動作を示している。3 is a flowchart for explaining the operation of the first embodiment. In the video display system shown in FIG. 1, when the video output destination is switched to the video display device, the video is displayed on the video display unit of the personal computer. The operation in the case where the displayed video is correctly output by the video display device is shown. 第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、パーソナルコンピュータから送信された映像信号の周波数が映像出力部で正常な表示が可能な周波数の範囲外である場合の動作を示している。2 is a flowchart for explaining the operation of the first embodiment, in the video display system shown in FIG. 1, the frequency of the video signal transmitted from the personal computer is a frequency at which normal display can be performed in the video output unit. The operation when it is out of range is shown. 第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、映像表示装置の外部入力端子の選択が、パーソナルコンピュータが接続されている外部入力端子以外になっている場合の動作を示している。2 is a flowchart for explaining the operation of the first embodiment, and in the video display system shown in FIG. 1, the selection of the external input terminal of the video display device is other than the external input terminal to which the personal computer is connected. It shows the operation when it is. 第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、パーソナルコンピュータと映像表示装置とが物理的に接続されていない場合の動作を示している。3 is a flowchart for explaining the operation of the first embodiment, and shows the operation when the personal computer and the video display device are not physically connected in the video display system shown in FIG. 1. 図1に示したパーソナルコンピュータが有している映像表示装置制御用アプリケーションを説明するための図であり、映像表示装置制御用アプリケーションを操作するための操作用アイコンが映像表示部に表示されているところを示している。It is a figure for demonstrating the video display apparatus control application which the personal computer shown in FIG. 1 has, and the icon for operation for operating the video display apparatus control application is displayed on the video display part. However, it shows. 第2の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、ユーザーが映像表示装置操作用アプリケーションを操作して、映像表示装置の外部入力端子をパーソナルコンピュータが接続されている外部入力端子に切り替える場合の動作を示している。FIG. 6 is a flowchart for explaining the operation of the second embodiment. In the video display system shown in FIG. 1, the user operates the video display device operation application, and the external input terminal of the video display device is connected to a personal computer. The operation when switching to an external input terminal connected to is shown.
 以下に、本発明の映像表示システムの実施の形態について、図面を参照して説明する。
(第1の実施の形態)
 図1は、本発明の映像表示システムの第1の実施の形態を示すブロック図である。
Embodiments of a video display system according to the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing a first embodiment of a video display system of the present invention.
 本形態の映像表示システムは図1に示すように、映像供給装置であるパーソナルコンピュータ1101と、パーソナルコンピュータ1101と信号線1301を介して接続された映像表示装置1201とから構成されている。信号線1301は、映像信号線1302とDDC(Display Data Channel)制御線1303とを有している。なお、映像表示装置1201は、DDC規格に対応している。 As shown in FIG. 1, the video display system according to this embodiment includes a personal computer 1101 which is a video supply device, and a video display device 1201 connected to the personal computer 1101 via a signal line 1301. The signal line 1301 includes a video signal line 1302 and a DDC (Display Data Channel) control line 1303. Note that the video display device 1201 corresponds to the DDC standard.
 DDC規格とは、映像表示装置とパーソナルコンピュータとの間で映像表示装置が対応している解像度等の映像表示に関する情報を交換し、パーソナルコンピュータに接続される映像表示装置のプラグアンドプレイを実現するための規格である。 The DDC standard exchanges information about video display such as resolution supported by the video display device between the video display device and the personal computer, and realizes plug and play of the video display device connected to the personal computer. It is a standard for.
 まず、本形態におけるパーソナルコンピュータ1101及び映像表示装置1201の動作概要について説明する。 First, an outline of operations of the personal computer 1101 and the video display device 1201 in this embodiment will be described.
 図1においてパーソナルコンピュータ1101は、映像表示装置1201との接続状態や映像表示装置1201の動作環境を確認するための接続確認コマンドをDDC制御線1303を介して映像表示装置1201へ送信する。 In FIG. 1, the personal computer 1101 transmits a connection confirmation command for confirming the connection state with the video display device 1201 and the operating environment of the video display device 1201 to the video display device 1201 via the DDC control line 1303.
 映像表示装置1201は、パーソナルコンピュータ1101から送信された接続確認コマンドを受信すると、パーソナルコンピュータ1101との接続状態や自身の動作環境を示す応答コマンドをDDC制御線1303を介してパーソナルコンピュータ1101へ送信する。 Upon receiving the connection confirmation command transmitted from the personal computer 1101, the video display device 1201 transmits a response command indicating the connection state with the personal computer 1101 and its own operating environment to the personal computer 1101 via the DDC control line 1303. .
 パーソナルコンピュータ1101は、映像表示装置1201から送信された応答コマンドの受信の有無や送信された応答コマンドが示す内容によって映像表示装置1201との接続状態や映像表示装置1201との動作環境を認識する。 The personal computer 1101 recognizes the connection status with the video display device 1201 and the operating environment with the video display device 1201 based on whether or not the response command transmitted from the video display device 1201 has been received and the content indicated by the transmitted response command.
 次に、本形態の映像表示システムの構成について説明する。 Next, the configuration of the video display system of this embodiment will be described.
 図1に示した映像表示システムのパーソナルコンピュータ1101は、UI(ユーザーインタフェース)部1102と、映像供給装置側制御部である制御部1103と、モニタIF(インタフェース)部1104と、映像表示部1105と、記憶部1106とを備えている。 A personal computer 1101 of the video display system shown in FIG. 1 includes a UI (user interface) unit 1102, a control unit 1103 that is a video supply device side control unit, a monitor IF (interface) unit 1104, and a video display unit 1105. And a storage unit 1106.
 UI部1102は、ユーザーからのパーソナルコンピュータ1101に対する操作を受け付け、受け付けた操作を制御信号に変換し、その制御信号を制御部1103へ送信する。 The UI unit 1102 receives an operation on the personal computer 1101 from the user, converts the received operation into a control signal, and transmits the control signal to the control unit 1103.
 制御部1103は、パーソナルコンピュータ1101の動作を制御するものであり、代表的な動作としては、以下が挙げられる。
(1):制御部1103は、UI部1102から送信された制御信号に応じて各ブロックの制御を行う。
(2):制御部1103は、映像信号の生成を行い、生成された映像信号を映像表示部1105に映像として表示させたり、映像表示装置1201へ送信したりする。
(3):制御部1103は、接続確認コマンドを生成し、映像表示装置1201へ送信する。また、映像表示装置1201から送信された応答コマンドを受信し、その応答コマンドに示された内容に応じて映像信号の生成を行う。
The control unit 1103 controls the operation of the personal computer 1101, and typical operations include the following.
(1): The control unit 1103 controls each block according to the control signal transmitted from the UI unit 1102.
(2): The control unit 1103 generates a video signal, displays the generated video signal as a video on the video display unit 1105, or transmits the video signal to the video display device 1201.
(3): The control unit 1103 generates a connection confirmation command and transmits it to the video display device 1201. Also, the response command transmitted from the video display device 1201 is received, and a video signal is generated according to the content indicated in the response command.
 モニタIF部1104は、制御部1103から送信された映像信号や接続確認コマンドを信号線1301を介して映像表示装置1201へ送信するための仲介を行う。また、信号線1301を介して映像表示装置1201から送信された信号や応答コマンドを制御部1103へ送信するための仲介を行う。 The monitor IF unit 1104 performs mediation for transmitting the video signal and the connection confirmation command transmitted from the control unit 1103 to the video display device 1201 via the signal line 1301. Further, mediation is performed for transmitting a signal or response command transmitted from the video display device 1201 via the signal line 1301 to the control unit 1103.
 図1に示した映像表示システムの映像表示装置1201は、映像処理部1202と、OSD処理部1203と、映像出力部1204と、映像表示装置側制御部である制御部1205と、複数の外部入力端子1206a~1206nとを備えている。なお、OSDとは、映像表示装置の設定を行うためのメニューやガイドを映像上に表示し、ユーザーがメニューやガイドを使って映像表示装置を操作することができる機能である。このメニューやガイドは、パーソナルコンピュータ等から出力された映像の上に重畳して表示され、ユーザーが映像表示装置本体の前面や側面などに配されたボタンで操作する。 The video display device 1201 of the video display system shown in FIG. 1 includes a video processing unit 1202, an OSD processing unit 1203, a video output unit 1204, a control unit 1205 which is a video display device side control unit, and a plurality of external inputs. Terminals 1206a to 1206n are provided. The OSD is a function that displays a menu or guide for setting the video display device on the video, and allows the user to operate the video display device using the menu or guide. These menus and guides are displayed superimposed on video output from a personal computer or the like, and the user operates with buttons provided on the front and side surfaces of the video display device main body.
 映像処理部1202は、パーソナルコンピュータ1101から送信された映像信号を外部入力端子1206a~1206nを介して受信し、OSD処理部1203を介して映像出力部1204に映像を表示させる。また、受信した映像信号が映像出力部1204で正常な表示が可能な映像信号かどうかを判断し、その結果を制御部1205へ通知する。 The video processing unit 1202 receives the video signal transmitted from the personal computer 1101 via the external input terminals 1206a to 1206n, and causes the video output unit 1204 to display the video via the OSD processing unit 1203. Further, it is determined whether the received video signal is a video signal that can be normally displayed by the video output unit 1204, and the result is notified to the control unit 1205.
 OSD処理部1203は、映像処理部1202から送信された映像信号にメニューやガイドを重畳させる。 The OSD processing unit 1203 superimposes a menu or guide on the video signal transmitted from the video processing unit 1202.
 制御部1205は、映像表示装置1201の動作を制御するものであり、代表的な動作としては、以下が挙げられる。
:制御部1205は、パーソナルコンピュータ1101から送信された接続確認
コマンドを外部入力端子1206a~1206nを介して受信し、接続確認コマンドに対する応答コマンドを生成し、生成した応答コマンドを外部入力端子1206a~1206nを介してパーソナルコンピュータ装置1101へ送信する。
(2):制御部1205は、映像信号の入力を受け付ける外部入力端子の選択及び切り替えを行う。
The control unit 1205 controls the operation of the video display device 1201, and typical operations include the following.
The control unit 1205 receives the connection confirmation command transmitted from the personal computer 1101 via the external input terminals 1206a to 1206n, generates a response command for the connection confirmation command, and generates the generated response command for the external input terminals 1206a to 1206n. To the personal computer device 1101.
(2): The control unit 1205 selects and switches an external input terminal that receives an input of a video signal.
 外部入力端子1206a~1206nは、パーソナルコンピュータ1101との映像信号等の送受信を仲介する。 External input terminals 1206a to 1206n mediate transmission / reception of video signals and the like with the personal computer 1101.
 以下に、上記のように構成された映像表示システムにおいて、パーソナルコンピュータ1101の映像表示部1105に表示されている映像を映像表示装置1201の映像出力部1204に表示させる場合の動作について説明する。 Hereinafter, in the video display system configured as described above, an operation when the video displayed on the video display unit 1105 of the personal computer 1101 is displayed on the video output unit 1204 of the video display device 1201 will be described.
 本実施の形態では、映像の出力先を映像表示部1105にするか、映像出力部1204にするかを切り替えるための機能がパーソナルコンピュータ1101のキーボードのファンクションキーに割り付けられている。 In this embodiment, a function for switching the video output destination between the video display unit 1105 and the video output unit 1204 is assigned to the function key of the keyboard of the personal computer 1101.
 まず、映像の出力先を映像表示装置1201に切り替えた際、パーソナルコンピュータ1101の映像が映像表示装置1201で正常に出力される場合の動作について説明する。 First, an operation when the video of the personal computer 1101 is normally output by the video display device 1201 when the video output destination is switched to the video display device 1201 will be described.
 図2は、第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、映像の出力先を映像表示装置1201に切り替えた際、パーソナルコンピュータ1101の映像が正しく映像表示装置1201で出力される場合の動作を示している。 FIG. 2 is a flowchart for explaining the operation of the first embodiment. When the video output destination is switched to the video display device 1201 in the video display system shown in FIG. Shows the operation when the image is correctly output by the video display device 1201.
 まず、ユーザーは、パーソナルコンピュータ1101のキーボードのファンクションキーの操作により、映像の出力先を映像表示部1105から映像表示装置1201の映像出力部1204へ切り替える操作を行う(STEP201)。 First, the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 201).
 ユーザーから映像出力先の切り替えの操作を受け付けたパーソナルコンピュータ1101のUI部1102は、受け付けた切り替えの操作の内容を制御信号に変換し、その制御信号を制御部1103へ送信する。 The UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
 UI部1102から送信された制御信号を受信した制御部1103は、映像表示部1105への映像出力をOFFにするとともに、モニタIF部1104への映像出力をONに切り替える(ステップ202)。 The control unit 1103 that has received the control signal transmitted from the UI unit 1102 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (step 202).
 そして、制御部1103は、モニタIF部1104から映像信号線1302を介して映像表示装置1201へ映像信号を送信する。 Then, the control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
 パーソナルコンピュータ1101から送信された映像信号を受信した映像処理部1202は、受信した映像信号が映像出力部1204で正常な表示が可能な映像信号かどうかを判断する。ここでは、受信した映像信号は、映像出力部1204で正常な表示が可能な映像信号なので、その旨を制御部1205へ通知する。そして、映像信号にスケーリング等の処理を施し、OSD処理部1203を介して映像出力部1204に映像を表示させる(STEP203)。 The video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, since the received video signal is a video signal that can be normally displayed by the video output unit 1204, the control unit 1205 is notified of this. Then, the video signal is subjected to processing such as scaling, and the video is displayed on the video output unit 1204 via the OSD processing unit 1203 (STEP 203).
 次に、パーソナルコンピュータ1101の制御部1103は、モニタIF部1104からDDC制御線1303を介して映像表示装置1201へ接続状態を確認するための接続確認コマンドを送信する(STEP204)。 Next, the control unit 1103 of the personal computer 1101 transmits a connection confirmation command for confirming the connection state from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 204).
 そして、パーソナルコンピュータ1101の制御部1103は、接続確認コマンドを送信後、一定時間、映像表示装置1201からのコマンド受信待ち状態となる(STEP205)。 Then, the control unit 1103 of the personal computer 1101 waits to receive a command from the video display device 1201 for a certain time after transmitting the connection confirmation command (STEP 205).
 映像表示装置1201の制御部1205は、STEP204においてパーソナルコンピュータ1101から送信された接続確認コマンドを受信する(STEP206)。 The control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 204 (STEP 206).
 次に、制御部1205は、パーソナルコンピュータ1101と映像出力装置1201とが正常に接続されていることを示す応答コマンドである接続完了コマンドをDDC制御線1303を介してパーソナルコンピュータ1101へ送信する(STEP207)。 Next, the control unit 1205 transmits a connection completion command, which is a response command indicating that the personal computer 1101 and the video output device 1201 are normally connected, to the personal computer 1101 via the DDC control line 1303 (STEP 207). ).
 映像表示装置1201から送信された接続完了コマンドをモニタIF部1104を介して受信した制御部1103は、パーソナルコンピュータ1101と映像表示装置1201とが正常に接続され、映像出力装置1201に映像が表示されていることを認識する(STEP208)。 The control unit 1103 that has received the connection completion command transmitted from the video display device 1201 via the monitor IF unit 1104 normally connects the personal computer 1101 and the video display device 1201, and displays video on the video output device 1201. (STEP 208).
 次に、映像の出力先を映像表示装置1201に切り替え、パーソナルコンピュータ1101の映像が映像表示装置1201で出力はされているが、その表示が正常でない場合の動作について説明する。ここでは、パーソナルコンピュータ1101から送信された映像信号の周波数が映像表示装置1201の映像出力部1204で正常な表示が可能な周波数の範囲外である場合について説明する。 Next, the operation when the video output destination is switched to the video display device 1201 and the video of the personal computer 1101 is output by the video display device 1201 but the display is not normal will be described. Here, a case where the frequency of the video signal transmitted from the personal computer 1101 is outside the range of frequencies that can be normally displayed by the video output unit 1204 of the video display device 1201 will be described.
 図3は、第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、パーソナルコンピュータ1101から送信された映像信号の周波数が映像出力部1204で正常な表示が可能な周波数の範囲外である場合の動作を示している。 FIG. 3 is a flowchart for explaining the operation of the first embodiment. In the video display system shown in FIG. 1, the frequency of the video signal transmitted from the personal computer 1101 is normal at the video output unit 1204. The operation when the display is outside the range of frequencies that can be displayed is shown.
 まず、ユーザーは、パーソナルコンピュータ1101のキーボードのファンクションキーの操作により、映像の出力先を映像表示部1105から映像表示装置1201の映像出力部1204へ切り替える操作を行う(STEP301)。 First, the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 301).
 ユーザーから映像出力先の切り替えの操作を受け付けたパーソナルコンピュータ1101のUI部1102は、受け付けた切り替えの操作の内容を制御信号に変換し、その制御信号を制御部1103へ送信する。 The UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
 UI部1102から送信された制御信号を受信した制御部1103は、映像表示部1105への映像出力をOFFにするとともに、モニタIF部1104への映像出力をONに切り替える(STEP302)。 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (STEP 302).
 そして、制御部1103は、モニタIF部1104から映像信号線1302を介して映像表示装置1201へ映像信号を送信する。 Then, the control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
 パーソナルコンピュータ1101から送信された映像信号を受信した映像処理部1202は、受信した映像信号が映像出力部1204で正常な表示が可能な映像信号かどうかを判断する。ここでは、受信した映像信号の周波数が映像出力部1204で正常な表示が可能な周波数の範囲外にあり、映像出力部1204で正常な表示が不可能な映像信号である。よって映像処理部1202は、その旨を制御部1205へ通知する。なお、この通知には映像出力部1204で正常な表示が可能な映像信号の周波数の範囲が示されている。
そして、映像処理部1202は、映像信号にスケーリング等の処理を施し、OSD処理部1203を介して映像出力部1204に映像を表示させる。この場合、パーソナルコンピュータ1101から送信された映像信号の周波数が映像出力部1204で対応している周波数の範囲外なので、正常でない映像が表示されている(STEP303)。
The video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, the frequency of the received video signal is outside the range of frequencies that can be normally displayed by the video output unit 1204, and is a video signal that cannot be normally displayed by the video output unit 1204. Therefore, the video processing unit 1202 notifies the control unit 1205 to that effect. This notification indicates the frequency range of the video signal that can be normally displayed by the video output unit 1204.
Then, the video processing unit 1202 performs processing such as scaling on the video signal and causes the video output unit 1204 to display the video via the OSD processing unit 1203. In this case, since the frequency of the video signal transmitted from the personal computer 1101 is outside the frequency range supported by the video output unit 1204, an abnormal video is displayed (STEP 303).
 次に、パーソナルコンピュータ1101の制御部1103は、モニタIF部1104からDDC制御線1303を介して映像表示装置1201へ接続確認コマンドを送信する(STEP304)。 Next, the control unit 1103 of the personal computer 1101 transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 304).
 そして、制御部1103は、接続確認コマンドを送信後、一定時間、映像表示装置1201からのコマンド受信待ち状態となる(STEP305)。 Then, after transmitting the connection confirmation command, the control unit 1103 waits for a command reception from the video display device 1201 for a predetermined time (STEP 305).
 映像表示装置1201の制御部1205は、STEP304においてパーソナルコンピュータ1101から送信された接続確認コマンドを受信する(STEP306)。 The control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 304 (STEP 306).
 次に、制御部1205は、パーソナルコンピュータ1101から受信した映像信号の周波数が映像出力部1204で正常な表示が可能な周波数の範囲外であることを示す応答コマンドであるアウトオブレンジコマンドをDDC制御線1303を介してパーソナルコンピュータ1101へ送信する送信する(STEP307)。なお、アウトオブレンジコマンドには、映像出力部1204で正常な表示が可能な映像信号の周波数の範囲が示されている。 Next, the control unit 1205 performs DDC control on an out-of-range command that is a response command indicating that the frequency of the video signal received from the personal computer 1101 is outside the range of frequencies that can be normally displayed by the video output unit 1204. Transmission to the personal computer 1101 is performed via the line 1303 (STEP 307). The out-of-range command indicates the frequency range of the video signal that can be normally displayed by the video output unit 1204.
 パーソナルコンピュータ1101の制御部1103は、映像表示装置1201から送信されたアウトオブレンジコマンドをモニタIF部1104を介して受信する(STEP308)。 The control unit 1103 of the personal computer 1101 receives the out-of-range command transmitted from the video display device 1201 via the monitor IF unit 1104 (STEP 308).
 そして、制御部1103は、受信したアウトオブレンジコマンドに示されている周波数の範囲内の周波数に切り替えた映像信号をモニタIF部1104から映像信号線1302を介して映像表示装置1201へ映像信号を送信する。(STEP309)。 Then, the control unit 1103 sends the video signal switched to a frequency within the frequency range indicated in the received out-of-range command from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302. Send. (STEP309).
 次に、制御部1103は、再度、モニタIF部1104からDDC制御線1303を介して映像表示装置1201へ接続確認コマンドを送信する(STEP310)。 Next, the control unit 1103 again transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 310).
 そして、制御部1103は、接続確認コマンドを送信後、一定時間、映像表示装置1201からのコマンド受信待ち状態となる(STEP311)。 Then, after transmitting the connection confirmation command, the control unit 1103 waits for a command reception from the video display device 1201 for a certain time (STEP 311).
 映像表示装置1201の制御部1205は、STEP310においてパーソナルコンピュータ1101から送信された接続確認コマンドを受信する(STEP312)。 The control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 310 (STEP 312).
 次に、制御部1205は、パーソナルコンピュータ1101と映像出力装置1201とが正常に接続されていることを示す応答コマンドである接続完了コマンドをDDC制御線1303を介してパーソナルコンピュータ1101へ送信する(STEP313)。 Next, the control unit 1205 transmits a connection completion command, which is a response command indicating that the personal computer 1101 and the video output device 1201 are normally connected, to the personal computer 1101 via the DDC control line 1303 (STEP 313). ).
 映像表示装置1201から送信された接続完了コマンドをモニタIF部1104を介して受信した制御部1103は、パーソナルコンピュータ1101と映像表示装置1201とが正常に接続され、映像出力装置1201に映像が表示されていることを認識する(STEP314)。 The control unit 1103 that has received the connection completion command transmitted from the video display device 1201 via the monitor IF unit 1104 normally connects the personal computer 1101 and the video display device 1201, and displays video on the video output device 1201. (STEP 314).
 次に、映像の出力先を映像表示装置1201に切り替えたが、パーソナルコンピュータ1101の映像が映像表示装置1201で出力されない場合の動作について説明する。ここでは、映像表示装置1201の外部入力端子の選択が、パーソナルコンピュータ1101が接続されている外部入力端子以外になっている場合について説明する。 Next, the operation when the video output destination is switched to the video display device 1201 but the video of the personal computer 1101 is not output by the video display device 1201 will be described. Here, a case where the selection of the external input terminal of the video display device 1201 is other than the external input terminal to which the personal computer 1101 is connected will be described.
 図4は、第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、映像表示装置1201の外部入力端子の選択が、パーソナルコンピュータが接続されている外部入力端子以外になっている場合の動作を示している。 FIG. 4 is a flowchart for explaining the operation of the first embodiment. In the video display system shown in FIG. 1, the selection of the external input terminal of the video display device 1201 is connected to a personal computer. The operation when it is other than the external input terminal is shown.
 まず、ユーザーは、パーソナルコンピュータ1101のキーボードのファンクションキーの操作により、映像の出力先を映像表示部1105から映像表示装置1201の映像出力部1204へ切り替える操作を行う(STEP401)。 First, the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 401).
 ユーザーから映像出力先の切り替えの操作を受け付けたパーソナルコンピュータ1101のUI部1102は、受け付けた切り替えの操作の内容を制御信号に変換し、その制御信号を制御部1103へ送信する。 The UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
 UI部1102から送信された制御信号を受信した制御部1103は、映像表示部1105への映像出力をOFFにするとともに、モニタIF部1104への映像出力をONに切り替える(STEP402)。 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (STEP 402).
 そして、制御部1103は、モニタIF部1104から映像信号線1302を介して映像表示装置1201へ映像信号を送信する。 Then, the control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
 ここで、映像表示装置1201には映像信号が入力されるが、パーソナルコンピュータ1101が接続されている外部入力端子は選択されていないので、映像表示装置1201の映像出力部1204には、映像は表示されない(STEP403)。 Here, a video signal is input to the video display device 1201, but since an external input terminal to which the personal computer 1101 is connected is not selected, the video is displayed on the video output unit 1204 of the video display device 1201. (STEP 403).
 次に、パーソナルコンピュータ1101の制御部1103は、モニタIF部1104からDDC制御線1303を介して映像表示装置1201へ接続確認コマンドを送信する(STEP404)。 Next, the control unit 1103 of the personal computer 1101 transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 404).
 そして、制御部1103は、接続確認コマンドを送信後、一定時間、映像表示装置1201からのコマンド受信待ち状態となる(STEP405)。 Then, the control unit 1103 waits for a command reception from the video display device 1201 for a certain time after transmitting the connection confirmation command (STEP 405).
 映像表示装置1201の制御部1205は、STEP404においてパーソナルコンピュータ1101から送信された接続確認コマンドを受信する(STEP406)。 The control unit 1205 of the video display device 1201 receives the connection confirmation command transmitted from the personal computer 1101 in STEP 404 (STEP 406).
 パーソナルコンピュータ1101からの接続確認コマンドを受信した制御部1205は、外部入力端子の選択を、パーソナルコンピュータ1101が接続されている外部入力端子に切り替える(STEP407)。 Upon receiving the connection confirmation command from the personal computer 1101, the control unit 1205 switches the selection of the external input terminal to the external input terminal to which the personal computer 1101 is connected (STEP 407).
 映像表示装置1201の外部入力端子がパーソナルコンピュータ1101が接続されている外部入力端子に切り替わると、映像処理部1202は、パーソナルコンピュータ1101から送信された映像信号を受信する。 When the external input terminal of the video display device 1201 is switched to the external input terminal to which the personal computer 1101 is connected, the video processing unit 1202 receives the video signal transmitted from the personal computer 1101.
 パーソナルコンピュータ1101から送信された映像信号を受信した映像処理部1202は、受信した映像信号が映像出力部1204で正常な表示が可能な映像信号かどうかを判断する。ここでは、受信した映像信号は、映像出力部1204で正常な表示が可能な映像信号なので、その旨を制御部1205へ通知する。そして、映像信号にスケーリング等の処理を施し、OSD処理部1203を介して映像出力部1204に映像を表示させる(STEP408)。 The video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, since the received video signal is a video signal that can be normally displayed by the video output unit 1204, the control unit 1205 is notified of this. Then, the video signal is subjected to processing such as scaling, and the video is displayed on the video output unit 1204 via the OSD processing unit 1203 (STEP 408).
 そして、制御部1205は、パーソナルコンピュータ1101と映像出力装置1201とが正常に接続されていることを示す応答コマンドである接続完了コマンドをDDC制御線1303を介してパーソナルコンピュータ1101へ送信する(STEP409)。 Then, the control unit 1205 transmits a connection completion command, which is a response command indicating that the personal computer 1101 and the video output device 1201 are normally connected, to the personal computer 1101 via the DDC control line 1303 (STEP 409). .
 映像表示装置1201から送信された接続完了コマンドをモニタIF部1104を介して受信した制御部1103は、パーソナルコンピュータ1101と映像表示装置1201とが正常に接続され、映像出力装置1201に映像が表示されていることを認識する(STEP410)。 The control unit 1103 that has received the connection completion command transmitted from the video display device 1201 via the monitor IF unit 1104 normally connects the personal computer 1101 and the video display device 1201, and displays video on the video output device 1201. (STEP 410).
 次も、映像の出力先を映像表示装置1201に切り替えたが、パーソナルコンピュータ1101の映像が映像表示装置1201で出力されない場合の動作について説明するが、ここでは、パーソナルコンピュータ1101と映像表示装置1201とが物理的に接続されていない場合の動作について説明する。 Next, the operation when the video output destination is switched to the video display device 1201 but the video of the personal computer 1101 is not output by the video display device 1201 will be described. Here, the personal computer 1101, the video display device 1201, The operation when is not physically connected will be described.
 図5は、第1の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、パーソナルコンピュータ1101と映像表示装置1201とが物理的に接続されていない場合の動作を示している。 FIG. 5 is a flowchart for explaining the operation of the first embodiment. In the video display system shown in FIG. 1, the personal computer 1101 and the video display device 1201 are not physically connected. The operation is shown.
 まず、ユーザーは、パーソナルコンピュータ1101のキーボードのファンクションキーの操作により、映像の出力先を映像表示部1105から映像表示装置1201の映像出力部1204へ切り替える操作を行う(STEP501)。 First, the user performs an operation of switching the video output destination from the video display unit 1105 to the video output unit 1204 of the video display device 1201 by operating a function key of the keyboard of the personal computer 1101 (STEP 501).
 ユーザーから映像出力先の切り替えの操作を受け付けたパーソナルコンピュータ1101のUI部1102は、受け付けた切り替えの操作の内容を制御信号に変換し、その制御信号を制御部1103へ送信する。 The UI unit 1102 of the personal computer 1101 that has received the video output destination switching operation from the user converts the content of the received switching operation into a control signal, and transmits the control signal to the control unit 1103.
 UI部1102から送信された制御信号を受信した制御部1103は、映像表示部1105への映像の出力をOFFにするとともに、モニタIF部1104への映像の出力をONに切り替える(STEP502)。 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 turns off the video output to the video display unit 1105 and switches on the video output to the monitor IF unit 1104 (STEP 502).
 そして、制御部1103は、モニタIF部1104から映像信号線1302を介して映像表示装置1201へ映像信号を送信する。 Then, the control unit 1103 transmits a video signal from the monitor IF unit 1104 to the video display device 1201 via the video signal line 1302.
 ここで、パーソナルコンピュータ1101と映像表示装置1201とは物理的に接続されていないため、映像表示装置1201は、映像を表示しない。 Here, since the personal computer 1101 and the image display device 1201 are not physically connected, the image display device 1201 does not display an image.
 次に、パーソナルコンピュータ1101の制御部1103は、モニタIF部1104からDDC制御線1303を介して映像表示装置1201へ接続確認コマンドを送信する(STEP503)。 Next, the control unit 1103 of the personal computer 1101 transmits a connection confirmation command from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303 (STEP 503).
 そして、制御部1103は、接続確認コマンドを送信後、一定時間、映像表示装置1201からのコマンド受信待ち状態となる(STEP504)。 Then, the control unit 1103 waits for receiving a command from the video display device 1201 for a certain time after transmitting the connection confirmation command (STEP 504).
 ここで、パーソナルコンピュータ1101と映像表示装置1201とは物理的に接続されていないため、パーソナルコンピュータ1101から送信された接続確認コマンドは、映像表示装置1201へは到着しない。よって、パーソナルコンピュータ1101は、映像表示装置1201からのコマンドを受信することなく、コマンド受信待ち状態がタイムアウトとなる(STEP505)。 Here, since the personal computer 1101 and the video display device 1201 are not physically connected, the connection confirmation command transmitted from the personal computer 1101 does not arrive at the video display device 1201. Therefore, the personal computer 1101 does not receive the command from the video display device 1201, and the command reception waiting state times out (STEP 505).
 コマンド受信待ち状態がタイムアウトとなると、制御部1103は、映像表示部1105の映像出力をONにするとともに、モニタIF部1104への映像出力をOFFに切り替える(STEP506)。 When the command reception waiting state times out, the control unit 1103 turns on the video output of the video display unit 1105 and switches off the video output to the monitor IF unit 1104 (STEP 506).
 そして、制御部1103は、映像表示装置1201がパーソナルコンピュータ1101と正常に接続されていないことをユーザーに知らせるメッセージ等を映像表示部1105に表示させる(STEP507)。 Then, the control unit 1103 causes the video display unit 1105 to display a message or the like informing the user that the video display device 1201 is not normally connected to the personal computer 1101 (STEP 507).
 なお、上述した第1の実施の形態では、ユーザーによる操作でパーソナルコンピュータ1101の映像出力を、パーソナルコンピュータ1101の映像表示部1105から映像表示装置1201へ切り替えた場合について説明しているが、パーソナルコンピュータ1101の映像表示部1105と映像表示装置1201との両方に映像を出力する場合も、パーソナルコンピュータ1101の映像表示部1105に常に映像が表示されること以外は同様である。 In the first embodiment described above, the case where the video output of the personal computer 1101 is switched from the video display unit 1105 of the personal computer 1101 to the video display device 1201 by a user operation has been described. The same applies to the case where the video is output to both the video display unit 1105 and the video display device 1201 except that the video is always displayed on the video display unit 1105 of the personal computer 1101.
 また、上述した第1の実施の形態では、ユーザーが映像の出力先を切り替えた後に接続確認コマンドを送信しているが、接続確認コマンドを先に送信して接続確認をしてから、その結果に基づいて映像出力を切り替えてもよい。 In the first embodiment described above, the user transmits the connection confirmation command after switching the video output destination. However, the result of confirming the connection by transmitting the connection confirmation command first is the result. The video output may be switched based on
 このように本形態においては、映像表示装置1201に映像が全く表示されない、もしくは、正しく表示されない場合でも、ユーザーにその原因を通知したり、自動的に出力調整されたりする。よって、ユーザーがパーソナルコンピュータ1101の映像を映像表示装置1201に表示させることが容易になる。
(第2の実施の形態)
 第2の実施の形態では、パーソナルコンピュータ1101が有する映像表示装置1201を制御するためのアプリケーションを利用し、映像表示装置1201との接続を行う方法について説明する。
As described above, in this embodiment, even when no video is displayed on the video display device 1201 or when the video is not displayed correctly, the cause is notified to the user or the output is automatically adjusted. Therefore, it becomes easy for the user to display the video of the personal computer 1101 on the video display device 1201.
(Second Embodiment)
In the second embodiment, a method for connecting to the video display device 1201 using an application for controlling the video display device 1201 of the personal computer 1101 will be described.
 本形態の映像表示システムと第1の実施の形態で示した映像表示システムとの違いは、パーソナルコンピュータ1101が映像表示装置1201を制御するための映像表示装置制御用アプリケーションを記憶部1106に有している点である。 The difference between the video display system of this embodiment and the video display system shown in the first embodiment is that the storage unit 1106 has a video display device control application for the personal computer 1101 to control the video display device 1201. It is a point.
 映像表示装置制御用アプリケーションは、映像表示装置1201の電源のON/OFFを行う機能や映像表示装置1201の外部入力端子を切り替える機能を有する。 The video display device control application has a function of turning on / off the power of the video display device 1201 and a function of switching an external input terminal of the video display device 1201.
 図6は、図1に示したパーソナルコンピュータ1101が有している映像表示装置制御用アプリケーションを説明するための図であり、映像表示装置制御用アプリケーションを操作するための操作用アイコン601が映像表示部1105に表示されているところを示している。 FIG. 6 is a diagram for explaining a video display device control application included in the personal computer 1101 shown in FIG. 1, and an operation icon 601 for operating the video display device control application is displayed as a video. The part displayed in the part 1105 is shown.
 図6に示すように、操作用アイコン601は、映像表示装置1201の外部入力端子を切り替えるための外部入力端子切り替えアイコン602と、外部入力端子リスト603とを備えている。 As shown in FIG. 6, the operation icon 601 includes an external input terminal switching icon 602 for switching the external input terminal of the video display device 1201 and an external input terminal list 603.
 ユーザーが外部入力端子切り替えアイコン602をマウスでクリックすると、映像表示装置1201の外部入力端子リスト603が表示される。外部入力端子リスト603には、映像表示装置1201に接続され、映像表示装置1201へ出力させる映像の供給元となる装置の装置名が列記されている。 When the user clicks the external input terminal switching icon 602 with a mouse, the external input terminal list 603 of the video display device 1201 is displayed. In the external input terminal list 603, device names of devices that are connected to the video display device 1201 and that supply video to be output to the video display device 1201 are listed.
 そして、ユーザーが外部入力端子リスト603から装置名を選択すると、外部入力端子の切り替えを指示するための外部入力端子切り替えコマンドが映像表示装置1201へ送信される。外部入力端子切り替えコマンドを受信した映像表示装置1201は、選択された装置が接続されている外部入力端子を映像信号を受け付ける外部入力端子として選択する。 When the user selects a device name from the external input terminal list 603, an external input terminal switching command for instructing switching of the external input terminal is transmitted to the video display device 1201. The video display device 1201 that has received the external input terminal switching command selects the external input terminal to which the selected device is connected as the external input terminal that receives the video signal.
 図7は、第2の実施の形態の動作を説明するためのフローチャートであり、図1に示した映像表示システムにおいて、ユーザーが映像表示装置操作用アプリケーションを操作して、映像表示装置1201の外部入力端子をパーソナルコンピュータ1101が接続されている外部入力端子に切り替える場合の動作を示している。 FIG. 7 is a flowchart for explaining the operation of the second embodiment. In the video display system shown in FIG. 1, the user operates the video display device operation application and the external of the video display device 1201. The operation when the input terminal is switched to the external input terminal to which the personal computer 1101 is connected is shown.
 まず、ユーザーは、パーソナルコンピュータ1101上で動作している、映像表示装置操作用アプリケーションの外部入力端子切り替えアイコン602をマウスでクリックする。 First, the user clicks the external input terminal switching icon 602 of the video display device operation application running on the personal computer 1101 with the mouse.
 ユーザーから外部入力端子切り替えアイコン602のクリックを受け付けたUI部1102は、受け付けた内容を制御信号に変換し、その制御信号を制御部1103へ送信する。 The UI unit 1102 that has received a click on the external input terminal switching icon 602 from the user converts the received content into a control signal, and transmits the control signal to the control unit 1103.
 UI部1102から送信された制御信号を受信した制御部1103は、記憶部1106に格納されている映像表示装置操作用アプリケーションに処理を行わせ、その結果、外部入力端子リスト603が映像表示部1105に表示される。 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 causes the video display device operation application stored in the storage unit 1106 to perform processing. As a result, the external input terminal list 603 is displayed in the video display unit 1105. Is displayed.
 そして、ユーザーが、外部入力端子リスト603からパーソナルコンピュータ1101自身を示す「コンピュータ」を選択すると(STEP701)、選択を受け付けたUI部1202は、受け付けた内容を制御信号に変換し、その制御信号を制御部1103へ送信する。 When the user selects “computer” indicating personal computer 1101 from the external input terminal list 603 (STEP 701), the UI unit 1202 that has received the selection converts the received content into a control signal, and the control signal is converted into the control signal. Transmit to the control unit 1103.
 UI部1102から送信された制御信号を受信した制御部1103は、モニタIF部1104からDDC制御線1303を介し、外部入力端子の切り替えを指示するための外部入力端子切り替えコマンドを映像表示装置1201へ送信する(STEP702)。 Upon receiving the control signal transmitted from the UI unit 1102, the control unit 1103 sends an external input terminal switching command for instructing switching of the external input terminal from the monitor IF unit 1104 to the video display device 1201 via the DDC control line 1303. Transmit (STEP 702).
 そして、制御部1103は、外部入力端子切り替えコマンドを送信後、一定時間、映像表示装置1201からのコマンド受信待ち状態となる(STEP703)。 Then, after transmitting the external input terminal switching command, the control unit 1103 waits to receive a command from the video display device 1201 for a certain time (STEP 703).
 映像表示装置1201の制御部1205は、STEP702においてパーソナルコンピュータ1101から送信された外部入力端子切り替えコマンドを受信する(STEP704)。 The control unit 1205 of the video display device 1201 receives the external input terminal switching command transmitted from the personal computer 1101 in STEP 702 (STEP 704).
 次に、制御部1205は、外部入力端子の選択をパーソナルコンピュータ1101が接続されている外部入力端子に切り替える(STEP705)。 Next, the control unit 1205 switches the selection of the external input terminal to the external input terminal to which the personal computer 1101 is connected (STEP 705).
 そして、制御部1205は、外部入力端子の切り替えが完了したことを示す外部入力端子切り替え完了コマンドをDDC制御線1303を介してパーソナルコンピュータ1101へ送信する(STEP706)。なお、外部入力端子切り替え完了コマンドは、パーソナルコンピュータ1101が接続されている外部入力端子が現在選択されている外部入力端子であることを示す情報を含んでいる。 Then, the control unit 1205 transmits an external input terminal switching completion command indicating that the switching of the external input terminal is completed to the personal computer 1101 via the DDC control line 1303 (STEP 706). The external input terminal switching completion command includes information indicating that the external input terminal to which the personal computer 1101 is connected is the currently selected external input terminal.
 パーソナルコンピュータ1101の制御部1103は、映像表示装置1201から送信された外部入力端子切り替え完了コマンドをモニタIF部1104を介して受信し(STEP707)、映像表示装置1201で選択されている外部入力端子が、パーソナルコンピュータ1101が接続されている外部入力端子であることを認識すると、映像表示部1105の映像出力をOFFにするとともに、モニタIF部1104の映像出力をONに切り替える。 The control unit 1103 of the personal computer 1101 receives the external input terminal switching completion command transmitted from the video display device 1201 via the monitor IF unit 1104 (STEP 707), and the external input terminal selected by the video display device 1201 is selected. When it is recognized that the personal computer 1101 is an external input terminal, the video output of the video display unit 1105 is turned off and the video output of the monitor IF unit 1104 is switched on.
 そして、制御部1103は、映像信号をモニタIF部1104から映像信号線1302を介して映像表示装置1201の映像処理部1202へ送信する(STEP708)。 Then, the control unit 1103 transmits the video signal from the monitor IF unit 1104 to the video processing unit 1202 of the video display device 1201 via the video signal line 1302 (STEP 708).
 パーソナルコンピュータ1101から送信された映像信号を受信した映像処理部1202は、受信した映像信号が映像出力部1204で正常な表示が可能な映像信号かどうかを判断する。ここでは、受信した映像信号は、映像出力部1204で正常な表示が可能な映像信号なので、その旨を制御部1205へ通知する。そして、映像信号にスケーリング等の処理を施し、OSD処理部1203を介して映像出力部1204に映像を表示させる(STEP709)。 The video processing unit 1202 that has received the video signal transmitted from the personal computer 1101 determines whether the received video signal is a video signal that can be normally displayed by the video output unit 1204. Here, since the received video signal is a video signal that can be normally displayed by the video output unit 1204, the control unit 1205 is notified of this. Then, the video signal is subjected to processing such as scaling, and the video is displayed on the video output unit 1204 via the OSD processing unit 1203 (STEP 709).
 なお、本発明においては、パーソナルコンピュータまたは映像表示装置内の処理は上述の専用のハードウェアにより実現されるもの以外に、その機能を実現するためのプログラムをパーソナルコンピュータまたは映像表示装置にて読取可能な記録媒体に記録し、この記録媒体に記録されたプログラムをパーソナルコンピュータまたは映像表示装置に読み込ませ、実行するものであっても良い。パーソナルコンピュータまたは映像表示装置にて読取可能な記録媒体とは、フロッピーディスク、光磁気ディスク、DVD、CDなどの移設可能な記録媒体の他、パーソナルコンピュータまたは映像表示装置に内蔵されたHDDなどを指す。 In the present invention, the processing in the personal computer or video display device can be read by the personal computer or video display device in addition to the above-described dedicated hardware. The program may be recorded on a simple recording medium, and the program recorded on the recording medium may be read and executed by a personal computer or a video display device. The recording medium that can be read by a personal computer or a video display device refers to a removable recording medium such as a floppy disk, a magneto-optical disk, a DVD, or a CD, and an HDD built in the personal computer or the video display device. .
 以上、実施例を参照して本願発明を説明したが、本願発明は上記実施例に限定されるものではない。本願発明の構成や詳細には、本願発明のスコープ内で当業者が理解し得る様々な変更をすることができる。 Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

Claims (12)

  1.  映像表示装置と、該映像表示装置に出力させる映像の映像信号を供給する映像供給装置とを具備し、前記映像表示装置と前記映像供給装置との接続状態を確認できる映像表示システムであって、
     前記映像供給装置は、前記映像表示装置との接続状態および前記映像表示装置の動作環境を確認するための接続確認コマンドを前記映像表示装置へ送信し、その後、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する映像供給装置側制御部を備え、
     前記映像表示装置は、前記映像供給装置側制御部からの接続確認コマンドを受信すると、接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置側制御部へ送信する映像表示装置側制御部を備えることを特徴とする映像表示システム。
    A video display system comprising: a video display device; and a video supply device that supplies a video signal to be output to the video display device, wherein the connection state between the video display device and the video supply device can be confirmed,
    The video supply device transmits a connection confirmation command for confirming a connection state with the video display device and an operating environment of the video display device to the video display device, and then the connection transmitted from the video display device. When receiving a response command indicating the state and the operating environment, the video supply device side control unit for generating a video signal according to the received content,
    When the video display device receives a connection confirmation command from the video supply device side control unit, the video display device generates a response command indicating a connection state and its operating environment and transmits the response command to the video supply device side control unit A video display system comprising a side control unit.
  2.  請求項1に記載の映像表示システムにおいて、
     前記映像表示装置は、前記映像供給装置側制御部から送信された映像信号を受信すると、受信した映像信号に基づく映像を表示する映像出力部を備え、
     前記映像表示装置側制御部は、前記映像が正常に前記映像出力部に表示されていない場合、前記映像表示装置の動作環境を示す応答コマンドを前記映像供給装置側制御部へ送信する映像表示システム。
    The video display system according to claim 1,
    The video display device includes a video output unit that displays a video based on the received video signal when receiving the video signal transmitted from the video supply device side control unit,
    The video display device-side control unit transmits a response command indicating an operating environment of the video display device to the video supply device-side control unit when the video is not normally displayed on the video output unit. .
  3.  請求項1に記載の映像表示システムにおいて、
     前記映像表示装置は、映像信号の入力を受け付ける複数の外部入力端子を備え、
     前記映像表示装置側制御部は、前記映像供給装置側制御部から送信された接続確認コマンドを受信した外部入力端子が映像信号の入力を受け付ける状態にある外部入力端子と異なっていた場合、前記接続確認コマンドを受信した外部入力端子を映像信号の入力を受け付ける状態に切り替え、前記映像供給装置と前記映像表示装置との接続状態が正常であることを示す応答コマンドを前記映像供給装置側制御部へ送信する映像表示システム。
    The video display system according to claim 1,
    The video display device includes a plurality of external input terminals for receiving video signal input,
    The video display device side control unit, when the external input terminal that has received the connection confirmation command transmitted from the video supply device side control unit is different from the external input terminal in a state of accepting the input of the video signal, the connection The external input terminal that has received the confirmation command is switched to a state that accepts an input of a video signal, and a response command indicating that the connection state between the video supply device and the video display device is normal is sent to the video supply device side control unit Video display system to send.
  4.  請求項1に記載の映像表示システムにおいて、
     前記映像供給装置は、前記映像供給装置側制御部によって生成された映像信号に基づく映像を表示する映像表示部を備え、
     前記映像供給装置側制御部は、前記接続確認コマンドを前記映像表示装置側制御部へ送信した後、予め決められた時間を経過しても前記映像表示装置側制御部から応答コマンドを受信しなかった場合、前記映像と、前記映像供給装置と前記映像表示装置との接続状態が正常でないことを示すメッセージと、を前記映像表示部に表示させる映像表示システム。
    The video display system according to claim 1,
    The video supply device includes a video display unit that displays a video based on a video signal generated by the video supply device side control unit,
    The video supply device side control unit does not receive a response command from the video display device side control unit even after a predetermined time has elapsed after transmitting the connection confirmation command to the video display device side control unit. A video display system that causes the video display unit to display the video and a message indicating that the connection state between the video supply device and the video display device is not normal.
  5.  映像供給装置とともに映像表示システムを構成する映像表示装置において、
     前記映像供給装置から、該映像供給装置との接続状態および動作環境を確認するための接続確認コマンドを受信した際に、前記映像供給装置との接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置へ送信する映像表示装置側制御部を備える映像表示装置。
    In a video display device constituting a video display system together with a video supply device,
    When a connection confirmation command for confirming the connection state and operating environment with the video supply device is received from the video supply device, a response command indicating the connection state with the video supply device and its own operating environment is generated. Then, a video display device comprising a video display device side control unit for transmitting to the video supply device.
  6.  請求項5に記載の映像表示装置において、
     前記映像供給装置から送信された映像信号を受信すると、受信した映像信号に基づく映像を表示する映像出力部を備え、
     前記映像表示装置側制御部は、前記映像が正常に前記映像出力部に表示されていない場合、前記映像表示装置の動作環境を示す応答コマンドを前記映像供給装置へ送信する映像表示装置。
    The video display device according to claim 5,
    When receiving a video signal transmitted from the video supply device, comprising a video output unit for displaying a video based on the received video signal,
    The video display device-side control unit transmits a response command indicating an operating environment of the video display device to the video supply device when the video is not normally displayed on the video output unit.
  7.  請求項5に記載の映像表示装置において、
     映像信号の入力を受け付ける複数の外部入力端子を備え、
     前記映像表示装置側制御部は、前記映像供給装置から送信された接続確認コマンドを受信した外部入力端子が映像信号の入力を受け付ける状態にある外部入力端子と異なっていた場合、前記接続確認コマンドを受信した外部入力端子を映像信号の入力を受け付ける状態に切り替え、前記映像供給装置と前記映像表示装置との接続状態が正常であることを示す応答コマンドを前記映像供給装置へ送信する映像表示装置。
    The video display device according to claim 5,
    It has multiple external input terminals that accept video signal input,
    When the external input terminal that has received the connection confirmation command transmitted from the video supply device is different from the external input terminal that is in a state of accepting the input of the video signal, the video display device side control unit receives the connection confirmation command. A video display device that switches a received external input terminal to a state in which an input of a video signal is received and transmits a response command indicating that a connection state between the video supply device and the video display device is normal to the video supply device.
  8.  映像表示装置とともに映像表示システムを構成する映像供給装置において、
     前記映像表示装置へ、該映像表示装置との接続状態および動作環境を確認するための接続確認コマンドを送信し、その後、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する映像供給装置側制御部を備える映像供給装置。
    In a video supply device that constitutes a video display system together with a video display device,
    A connection confirmation command for confirming a connection state and an operating environment with the video display device is transmitted to the video display device, and then a response command indicating the connection state and the operating environment transmitted from the video display device is received. Then, a video supply apparatus provided with the video supply apparatus side control part which produces | generates the video signal according to the received content.
  9.  請求項8に記載の映像供給装置において、
     前記映像供給装置側制御部によって生成された映像信号に基づく映像を表示する映像表示部を備え、
     前記映像供給装置側制御部は、前記接続確認コマンドを前記映像表示装置へ送信した後、予め決められた時間を経過しても前記映像表示装置から応答コマンドを受信しなかった場合、前記映像と、前記映像供給装置と前記映像表示装置との接続状態が正常でないことを示すメッセージと、を前記映像表示部に表示させる映像供給装置。
    The video supply device according to claim 8, wherein
    A video display unit for displaying video based on the video signal generated by the video supply device side control unit;
    If the video supply device side control unit does not receive a response command from the video display device after a predetermined time has elapsed after transmitting the connection confirmation command to the video display device, A video supply device that causes the video display unit to display a message indicating that the connection state between the video supply device and the video display device is not normal.
  10.  映像表示装置と、該映像表示装置に出力させる映像の映像信号を供給する映像供給装置とを具備する映像表示システムで行われ、前記映像表示装置と前記映像供給装置との接続状態を確認できる映像表示方法であって、
     前記映像供給装置が、前記映像表示装置との接続状態および前記映像表示装置の動作環境を確認するための接続確認コマンドを前記映像表示装置へ送信する処理と、
     前記映像表示装置が、前記映像供給装置側制御部からの接続確認コマンドを受信すると、接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置側制御部へ送信する処理と、
     前記映像供給装置が、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する処理とを有する映像表示方法。
    A video that can be confirmed in a video display system that includes a video display device and a video supply device that supplies a video signal of a video to be output to the video display device so that a connection state between the video display device and the video supply device can be confirmed. Display method,
    A process of transmitting a connection confirmation command for confirming a connection state with the video display device and an operating environment of the video display device to the video display device;
    When the video display device receives a connection confirmation command from the video supply device side control unit, a process of generating a response command indicating a connection state and its operating environment and transmitting the response command to the video supply device side control unit;
    When the video supply device receives a response command indicating the connection state and operating environment transmitted from the video display device, the video display method includes a process of generating a video signal corresponding to the received content.
  11.  映像供給装置とともに映像表示システムを構成する映像表示装置に、
     前記映像供給装置から、該映像供給装置との接続状態および動作環境を確認するための接続確認コマンドを受信した際に、前記映像供給装置との接続状態および自身の動作環境を示す応答コマンドを生成して前記映像供給装置へ送信する機能を実現させるためのプログラム。
    In the video display device that constitutes the video display system together with the video supply device,
    When a connection confirmation command for confirming the connection state and operating environment with the video supply device is received from the video supply device, a response command indicating the connection state with the video supply device and its own operating environment is generated. And a program for realizing a function of transmitting to the video supply device.
  12.  映像表示装置とともに映像表示システムを構成する映像供給装置に、
     前記映像表示装置へ、該映像表示装置との接続状態および動作環境を確認するための接続確認コマンドを送信し、その後、前記映像表示装置から送信された接続状態および動作環境を示す応答コマンドを受信すると、その受信内容に応じた映像信号を生成する機能を実現させるためのプログラム。
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
    In the video supply device that constitutes the video display system together with the video display device,
    A connection confirmation command for confirming a connection state and an operating environment with the video display device is transmitted to the video display device, and then a response command indicating the connection state and the operating environment transmitted from the video display device is received. Then, a program for realizing a function of generating a video signal corresponding to the received content.





















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