WO2014061145A1 - Video device and electricity supply method - Google Patents

Video device and electricity supply method Download PDF

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Publication number
WO2014061145A1
WO2014061145A1 PCT/JP2012/077028 JP2012077028W WO2014061145A1 WO 2014061145 A1 WO2014061145 A1 WO 2014061145A1 JP 2012077028 W JP2012077028 W JP 2012077028W WO 2014061145 A1 WO2014061145 A1 WO 2014061145A1
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WO
WIPO (PCT)
Prior art keywords
remaining
battery
power
electricity
power supply
Prior art date
Application number
PCT/JP2012/077028
Other languages
French (fr)
Japanese (ja)
Inventor
長谷川　実
甲　展明
Original Assignee
日立マクセル株式会社
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 日立マクセル株式会社 filed Critical 日立マクセル株式会社
Priority to PCT/JP2012/077028 priority Critical patent/WO2014061145A1/en
Publication of WO2014061145A1 publication Critical patent/WO2014061145A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging

Definitions

  • the technical field relates to the supply of power to equipment.
  • Patent Document 1 Provides a wireless communication device, a wireless communication system, a wireless communication method, and a program capable of reliably supplying power to a plurality of terminals in a wireless communication network”
  • Patent Document 1 [0005] As a means for solving the problem, “a wireless communication unit that communicates with another device connected via a wireless communication network, a power status acquisition unit that acquires the power status of the device, A power supply unit that wirelessly supplies power to another device in response to a power supply request from another device connected via the wireless communication network when the power condition satisfies a predetermined condition. '' (Patent Document 1 [0006]) and the like.
  • Patent Document 1 only considers supplying power from the “own device” to the “other device”, which is inconvenient for the user.
  • the present application includes a plurality of means for solving the above-described problems.
  • a battery for storing electricity It has a power supply circuit that outputs stored electricity or inputs electricity to the battery, and a communication unit that communicates with other devices, and the communication unit can send messages requesting power to other devices
  • the communication unit receives a message requesting power from another device, the electricity stored in the battery is transmitted to the other device via the power supply circuit.
  • Block diagram showing an example of a transmission system The figure which shows an example of the designation
  • Block diagram showing an example of the multifunction device 4 Configuration diagram showing an example of connecting a source device and a multifunction device
  • the figure which shows an example of the electric power supply sequence of the structure which connected the source device and the multifunctional device Configuration diagram showing an example of connecting a sink device and a multifunction device
  • the user designates power supply in an arbitrary direction and transmits power in that direction, or communicates information about power between devices, and determines the power supply direction based on the result.
  • An example will be described in which power transmission is determined.
  • expressions such as “power supply” and “supply power” mean supplying electricity.
  • FIG. 1 is a block diagram illustrating an example of a transmission system using HDMI transmission, in which a source device 1 is connected to a sink device 2 via a cable 3 and a video signal is supplied from the source device 1 to the sink device 2
  • this is a system capable of mutually supplying power between the source device 1 and the sink device 2.
  • the source device 1 is, for example, a smartphone, a portable audio device, or a tablet PC.
  • the sink device 1 is, for example, a television, a projector, or an in-vehicle display.
  • the source device 1 performs a reproduction unit 101 that reproduces a video signal, a video transmission unit 102 that transmits the video signal, an EDID reading unit 103 that reads EDID (Extended Display Identification Data) from the sink device 2, and CEC (Consumer Electronics Control) communication.
  • CEC communication unit 104 source control unit 105 that controls each function unit of source device 1, power supply circuit unit 106 that supplies power to each function unit, and DDC + 5V supply unit 107 that supplies power to a DDC (Display Data Channel) + 5V line
  • an HPD detector 108 that detects an HPD (Hot Plug Detect) signal from the sink device 2.
  • the AC adapter 109 and the battery 111 are connected to the power supply circuit 106, and any of these supplies power to the power supply circuit 106.
  • the battery remaining amount confirmation unit 110 confirms the remaining amount of the battery 111.
  • the sink device 2 includes a display unit 201 that converts a video signal into a video, a video reception unit 202 that receives the video signal from the source device 1, an EDID storage unit 203 that stores EDID information read by the source device 1, and a CEC communication unit that performs CEC communication. 204, a sink control unit 205 that appropriately controls each function unit of the sink device 2, a power supply circuit unit 207 that appropriately supplies power to each function unit, and an HPD output unit 208 that outputs an HPD signal.
  • the AC adapter 209 and the battery 211 are connected to the power supply circuit 206, and any of these supplies power to the power supply circuit 206.
  • the battery remaining amount confirmation unit 210 confirms the remaining amount of the battery 211.
  • the cable 3 is a cable for connecting the source device 1 and the sink device 2 and is, for example, an HDMI cable.
  • a video signal transmission line 301, a DDC line 302, a CEC communication line 303, a DDC + 5V line 304, and an HPD line 305 necessary for explaining the present invention are extracted and described.
  • Power is supplied from the source device to the sink device by a method such as supplying power using the DDC + 5V line 304 or the like.
  • the power supply from the sink device to the source device is performed by a method of supplying power using the HPD line 305 or the like.
  • both devices connected as shown in FIG. 1 can be driven by a battery
  • power is supplied from the sink device 2 to the source device 1 or from the source device 1 to the sink device 2.
  • Enable As a result, it is possible to lengthen the operation time of the system configured by both connected devices.
  • Which direction of power supply is performed is determined by the following power supply mode example.
  • the first mode is the supply direction selection mode. This is a mode in which the user determines the power supply direction. It is assumed that this mode is used when it is desired to preferentially increase the remaining battery level of one of the devices, or when one of the devices is connected to a power source through an AC adapter.
  • the mode can be selected by key operation from either one of the connected devices.
  • An example of the mode designation method is shown in FIG.
  • the entire menu of either one of the devices is displayed, and the HDMI terminal setting is selected from the entire menu screen (screen 501).
  • a power supply mode selection menu is selected on the shifted screen 502.
  • the supply direction selection mode is selected on the shifted screen 503.
  • the cursor may be displayed in the previously selected mode.
  • the transitioned screen 504 it is selected whether to supply power from the currently operated device to the connected device or whether to supply power from the connected device to the currently operated device.
  • the power supply direction is reconfirmed on the transitioned screen 505. When the reconfirmation is completed, power supply in the selected direction is started.
  • FIG. 3 is a sequence diagram showing an example of processing when power supply from the source to the sink is selected.
  • DDC + 5V line power is supplied from the source device 1 to the sink device 2.
  • the sink device 2 changes the HPD line from the low level (hereinafter simply referred to as “L”) to the high level (hereinafter simply referred to as “H”), and confirms connection to the source device 1. return.
  • the source device 1 reads the EDID from the sink device 2 and completes the connection confirmation.
  • the user determines the power supply direction by using either device by the method shown in FIG.
  • a case where the operation shown in 71 is performed using the source device 1 as shown in FIG. 2, that is, a case where power supply from the source device 1 to the sink device 2 is selected will be described.
  • notification is made from the source device 1 on the operating side to the sink device 2 that there is power supply capability.
  • the sink device 2 sends a response indicating a power supply request to the source device 1.
  • power supply from the source device 1 to the sink device 2 is started.
  • the sink device 2 transmits a message requesting power supply stop to the source device 1.
  • the source device 1 transmits a message indicating that the power supply is stopped to the sink device 2, and the power supply is stopped.
  • the remaining battery level of the source device 1 on the power supply side becomes equal to or less than a predetermined value, or when the user selects the power supply stop from the source device 1 side, a message indicating the stop of power supply from the source device 1 is displayed. The sink device 2 is notified and the power supply is terminated.
  • the example in which power is supplied from the source device 1 to the sink device 2 has been described.
  • messages and requests sent from the source device 1 to the sink device 2 can also be sent from the sink device 2, and similarly messages and requests sent from the sink device 2 to the source device 1 can also be sent. Transmission from the source device 2 to the sink device 2 is possible.
  • the second mode is a remaining amount division mode in which the power supply direction is determined so that the remaining battery amounts of two devices to be connected are equal. It is assumed as a use example that this mode is used when, for example, a device having a sufficient remaining battery capacity is used to a device having a small remaining battery capacity, depending on the remaining power.
  • a method such as selecting the remaining amount division mode at 503 in FIG.
  • FIG. 4 is a sequence diagram showing an example of processing in the remaining amount division mode.
  • the connection confirmation from 701 to 703 is the same as in FIG.
  • the source device 1 that has performed the mode selection operation requests the sink device 2 to report the remaining battery amount.
  • the source device 1 and the sink device 2 check the remaining battery levels, and in 802, the sink device 2 transmits the information to the source device 1.
  • the information on the remaining battery level is detected by the remaining battery level checking units 110 and 210 of both devices and used for determining the feeding direction. Examples of information on the remaining battery level used here include information on the ratio to 100% full charge, information on physical quantities obtained in units such as A ⁇ Hour, and the like.
  • the power supply direction is determined such that power is supplied to the battery with the remaining amount from the largest to the smallest.
  • the determination result is transmitted from the source device 1 to the sink device 2.
  • the sink device 2 responds to this, and in 805, power supply from the sink device 2 to the source device 1 is started.
  • FIG. 4 illustrates a case where the sink device 2 has more battery power than the source device 1 and power is supplied from the sink device 2 to the source device 1.
  • the determination result is notified or the determination result is displayed. Instead of the notification, a power supply request message is transmitted from the source device 1 to the sink device 2.
  • the result is transmitted from the source device 1 to the sink device 2 in 803.
  • a message requesting power supply from the sink device 2 to the source device 1 is transmitted at 804, and power supply from the source device 1 to the sink device 2 is started at 805 in response to the message.
  • steps 806 to 809 the information on the remaining battery level is exchanged every certain time (for example, every 1 minute).
  • the power supply is terminated when the remaining battery amounts become equal or the difference between the remaining battery amounts is within a predetermined value as a result of the information exchange.
  • this mode when this mode is selected, it is confirmed that one device is connected to the power supply through an AC adapter, etc., or one device is connected to the power supply through an AC adapter or the like during power feeding. If this is detected, it may be automatically set so that power is automatically supplied from the side connected to the power source to the side not connected. In this case, power supply is terminated when both batteries are fully charged.
  • the third mode is the longest duration mode in which the power supply direction is determined so that the remaining operation times of two connected devices are equal (or the difference is as small as possible).
  • this mode is used when it is desired to operate the system as long as possible.
  • An example of the mode designation method is to select the longest duration mode in 503 in FIG.
  • FIG. 5 is a sequence diagram showing an example of processing in the longest duration mode.
  • the connection confirmation from 701 to 703 is the same as in FIG.
  • the source device 1 in which the mode selection operation is performed requests the sink device 2 to report the remaining operation time.
  • the source device 1 and the sink device 2 check the remaining battery levels and calculate the remaining operating time.
  • the sink device 2 transmits the information to the source device 1.
  • the remaining operating time can be calculated from the remaining battery level detected by the remaining battery level checking units 110 and 210 of both devices, the power consumption per unit time of the source device 1 and the sink device 2, and the like.
  • the power supply direction is determined such that the power is supplied from the longer remaining operation time to the shorter remaining operation time.
  • the source device 1 transmits the determination result to the sink device 2.
  • the sink device 2 responds to this at 904, power supply is started (905).
  • FIG. 5 illustrates a case where the remaining operating time of the sink device 2 is longer than the remaining operating time of the source device 1 and power is supplied from the sink device 2 to the source device 1.
  • a power supply request message is transmitted from the source device 1 to the sink device 2.
  • the result is transmitted from the source device 1 to the sink device 2 in 903.
  • a message requesting power supply from the sink device 2 to the source device 1 is transmitted at 904, and power supply from the source device 1 to the sink device 2 is started at 905 in response to the message.
  • the remaining power supply time is calculated from the change in the remaining operation time and the elapsed time from the start of power supply, so that the remaining operation times of the two connected devices are equal (or the difference is as small as possible).
  • the remaining power supply time calculated in 97 elapses (98)
  • 909 a message for stopping power supply is transmitted from the source device 1 to the sink device 2, and in 910, the sink device 2 supplies power according to the message. To stop.
  • this mode when this mode is selected, it is confirmed that one device is connected to the power supply through an AC adapter, etc., or one device is connected to the power supply through an AC adapter or the like during power feeding. If this is detected, it may be automatically set so that power is automatically supplied from the side connected to the power source to the side not connected. In this case, power supply is terminated when both batteries are fully charged.
  • the remaining operating time of each device is calculated by each device, but may be performed by one device.
  • the source device 1 receives only information necessary for calculating the operation time such as the remaining battery capacity and the power consumption of the sink device 2 from the sink device 2 instead of the remaining operation time.
  • the remaining operating time of the device 2 may be calculated. In this way, even if the sink device 2 does not have a function for calculating the remaining operation time, it is possible to supply power based on the remaining operation time.
  • the fourth mode is an automatic mode that recommends a mode that seems appropriate in consideration of information such as the remaining battery level and operation history between two connected devices.
  • the remaining battery level will automatically be determined by determining that the device with the lower battery level often needs charging. Recommended or selected.
  • the difference in the remaining battery level is within a predetermined value, it is determined that there are many cases in which the operating side needs charging, and the device on the operating side is Recommend or choose to supply power.
  • a mode with the largest number of past selections is recommended or selected.
  • An example of the mode designation method is a method of selecting the automatic mode in 503 in FIG.
  • each connected device automatically performs functions such as display functions and video transmission functions other than functions such as power transmission, connection confirmation, and information exchange necessary for power reception and power supply. It may be set to stop and save power, and charging efficiency may be increased by suppressing power consumption during charging.
  • FIG. 6 shows an example of a configuration diagram of the multi-function device 4 of the present embodiment.
  • the composite function device 4 includes a source function circuit 402, a sink function circuit 403, and a switching control unit 404 for switching between them.
  • the configuration of the source function circuit 402 is the same as that of the source device 1 in FIG. 1, and the sink function circuit 403 is the same as that of the sink device 2 in FIG.
  • the switching control unit 404 connects the external input / output terminal 401 to the source function circuit. By connecting to 402, the source function is realized.
  • the switching control unit 404 is connected to the cable 3
  • the sink function is realized by connecting the input / output terminal 401 to the sink function circuit 403.
  • the multifunction device 4 uses the function as the source or supplies power to another source device as the sink. You can choose what to do.
  • Example 2-1 Example of connection between source device and multifunction device>
  • the source device 11 has both a source function and a function to which power is supplied from the sink device, and has both a source function and a sink function. Both the sink device and the source device receive power.
  • a configuration in which the multifunction device 4 having a function that can be supplied is connected via the cable 3 will be described.
  • the power supply that can be performed between the devices in this combination is only the power supply from the multifunction device 4 to the source device 11, when the user confirms that the devices in this combination are connected via the cable, It is possible to determine that the intention to supply power from the multi-function device 4 to the source device 11 is clear, and to start power supply based on the information.
  • an OSD screen that asks the user whether or not to start power supply may be displayed.
  • FIG. 8 is a sequence diagram showing an example of processing of this embodiment.
  • the multifunction device 4 first confirms whether or not power is supplied to the DDC + 5V line. If it is confirmed, it is confirmed that the connection partner is the source. Therefore, the switching function unit 404 connects the external input / output terminal 401 connected to the cable 3 to the sink function circuit 403 so as to have the sink function. .
  • the multifunction device 4 confirms the + DDC5V power supply (1012), and the switching control unit 404 connects to the cable 3 to have a sink function.
  • the output terminal 401 is connected to the sink function circuit 403 (1013).
  • the composite function device 4 serving as the sink maintains the HPD line power supply to the source device 11. Thereafter, in step 1004, reading of EDID, which is transmission of a function as a sink, is performed. At this time, the multi-function device 4 may transmit the power supply capability to the source device 1 by describing in the EDID that power can be supplied to the source device to which the user is connected.
  • power request information is transmitted from the source device 1 to the multifunction device 4 at 1005.
  • This power request transmission is performed by the method described in Patent Document 1, for example.
  • the multi-function device 4 that has received the power request information by any method returns a response to it in 1006. If the power receiving condition is prepared by this information exchange, the multifunction device 4 starts supplying power to the source device 1 in 1007.
  • the condition requested by the power request information is the same as the power supplied from the HPD line at this time, the power supply condition from the HPD line is maintained as it is, and the power requested by the power request information is HPD at this time. If it is different from the power supplied from the line, it will be changed to the required condition.
  • the OSD screen is displayed on the display screen provided in the multifunction device 4 to ask the user whether or not to start power supply, and after the user permits the power supply start by key operation or the like. You may start electric power supply. If the power supply is terminated due to reasons such as the battery charging of the source device 1 on the power receiving side being completed or the remaining battery level of the multifunction device 4 being below a predetermined level, the power cannot be supplied any more. A power supply stop is requested from the other device, and the power supply is stopped (1008, 1009).
  • the multi-function device 4 has a sink function circuit 403 because it needs to have a function as a sink, and is used in the sequence of FIG. 8 in the sink function circuit 403.
  • the part includes an EDID storage unit 203, a sink control unit 205, an HPD output unit 208, and a function for receiving power request information.
  • the video receiving unit 202 is not particularly necessary to realize the power supply function according to the present invention. For this reason, parts and circuits unnecessary for power supply may be omitted.
  • the multifunction device 4 may include a function necessary for functioning as a sink device as a video device in addition to a function necessary for power supply.
  • the user confirms that the device of this combination is connected via the cable. It is possible to determine that the intention to supply power from the functional device 4 to the sink device 7 has been clarified, and to start power supply based on the information.
  • an OSD screen that asks the user whether or not to start power supply may be displayed.
  • FIG. 10 is a sequence diagram showing an example of processing in the present embodiment.
  • the composite function device 4 first checks whether power is supplied to the DDC + 5V line (1111). Power is supplied from the functional device 4 to the source device 1 using the HPD line. Here again, when it is confirmed that power is not supplied to the DDC + 5V line, it is determined that the connected device is a device having a sink function, and the multifunction device 4 connects the switch control unit 404 to the cable 3 so as to have a source function.
  • the external input / output terminal 401 is connected to the source function circuit 402 (1113).
  • the multi-function device 4 that is the source supplies power to the DDC + 5V line in 1102, and in 1103, the sink device 7 returns a connection confirmation by setting the HPD line to a high voltage (L ⁇ H). Thereafter, at 1104, EDID is read.
  • power request information is transmitted from the sink device 7 to the multifunction device 4 in 1105.
  • This power request transmission is performed by the method described in Patent Document 1, for example.
  • the multi-function device 4 that has received the power request information by any method returns a response to it in 1106. If the power receiving condition is established by this information exchange, the multifunction device 4 starts supplying power to the sink device 7 in 1107.
  • the power supply condition from the DDC + 5V line is maintained as it is. If the power requested by the power request information is different from the power supplied from the DDC + 5V line at this time, the requested condition is changed.
  • the OSD screen is displayed on the display screen provided in the multifunction device 4 to ask the user whether or not to start power supply, and the user permits start of power supply by key operation or the like. After that, power supply may be started. If the power supply is terminated due to reasons such as the battery charging of the sink device 7 on the power receiving side being completed or the remaining battery level of the multi-function device 4 being less than a predetermined value, the power cannot be supplied any more. A power supply stop is requested from the other device, and the power supply is stopped (1008, 1009).
  • the multi-function device 4 has a source function circuit 402 because it needs to have a function as a source, and is used for the sequence of FIG. 10 in the source function circuit 402.
  • the parts are an EDID reading unit 103, a source control unit 105, a DDC + 5V supply unit 107, an HPD detection unit 108, and a function for receiving power request information.
  • the CEC communication unit 104 transmits and receives power information.
  • the playback unit 101 and the video receiving unit 102 are particularly useful for realizing the power supply function according to the present invention. I don't need it. For this reason, parts and circuits unnecessary for power supply may be omitted.
  • the HDMI specification stipulates that a display device that is essential as a source device that is a video display device is provided. Therefore, the multifunction device 4 may include a function necessary for functioning as a source device as a video device in addition to a function necessary for power supply.
  • power can be supplied in either direction from the multi-function device 41 to the multi-function device 42, or from the multi-function device 42 to the multi-function device 41. Therefore, power can be supplied in each mode shown in the first embodiment.
  • FIG. 12 shows an example of a sequence diagram in the case of the supply direction selection mode similar to FIG. 3 as an example of the present embodiment.
  • the side connected to the cable referred to as the multi-function device 41 in this embodiment
  • the multi-function device 41 first confirms the power supply of the DDC + 5V line (1212). If power supply is not confirmed, power is supplied to the HPD line in 1201, and then the power supply of the DDC + 5V line is confirmed again (1213). If the power supply is still not confirmed, the multifunction device 41 connects the external input / output terminal 401 connected to the cable 3 to the source function circuit 402 so as to have the source function (1214), and the DDC + 5V line at 1202 To power.
  • the switching control unit 404 connects the external input / output terminal 401 connected to the cable 3 to the sink function circuit 403 so as to have the sink function (1217). The following sequence is the same as in FIG.
  • ⁇ Other methods may be used as a method of assigning two multifunction devices to either sink or source. For example, when a multifunction device has a cable connection detection function, the device connected first becomes the source when it is detected that no device is connected to the opposite side of the cable. An example is a method in which a device connected later becomes a sink when it is detected that a source device is connected to the opposite side of the cable.
  • one of the devices connected in this way is a multi-function device that has the function of receiving and supplying power to both the source function / sink function and the sink device / source device, the partner device connected to the multi-function device Power can be supplied from either the source or the sink.
  • the combination power supply by the source device, the sink device, or the multifunction device is described as shown in FIGS. 1, 7, 9 and 11, but the power supply is not limited to this.
  • FIG. 13 is an example in which power is supplied by connecting to the multifunction device 4 and the wireless transmission system 1302 driven by the battery 1301.
  • the supply direction selection mode as shown in the second embodiment, It is also possible to select the remaining amount division mode, the longest duration mode, and the like so as to receive power in the necessary direction.
  • the wireless transmission system 1302 needs to have a battery remaining amount confirmation unit having a function of confirming the remaining amount of the battery, and further to have a function of transmitting the information to the multifunction device 4 There is.
  • various types of devices can supply and receive power according to the power state of each device and the user's will, improving usability for the user.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Provided is a configuration for a video device and a method for supplying power to the video device, the video device making it possible for power to be supplied and received between connected devices in a wide range of modes in a power supply system using video transmission lines. Information concerning power is communicated between the devices, the direction in which power is to be supplied is determined on the basis of the communication results, and the power is transmitted. Alternatively, a user issues an instruction for power to be supplied in a desired direction, and power is transmitted in that direction. When both of the connected devices are sources or sinks, at least one of the devices is imparted with the dual functions of supplying or receiving power as a source, and supplying or receiving power as a sink.

Description

映像機器および電気供給方法Video equipment and electricity supply method
　技術分野は、機器への電力の供給に関する。 The technical field relates to the supply of power to equipment.
　特許文献１には、「無線通信ネットワーク内の複数の端末に確実に電力を供給することが可能な無線通信装置、無線通信システム、無線通信方法及びプログラムを提供すること」（特許文献１［０００５］参照）を課題とし、その解決手段として「無線通信ネットワークを介して接続された他装置と通信を行う無線通信部と、自装置の電力状況を取得する電力状況取得部と、前記自装置の電力状況が所定の条件を満たした場合に、無線通信ネットワークを介して接続された他装置からの電力供給要求に応じて、当該他装置へ無線で電力を供給する電力供給部と、を備える」（特許文献１［０００６］）こと等が記載されている。 Patent Document 1 “Provides a wireless communication device, a wireless communication system, a wireless communication method, and a program capable of reliably supplying power to a plurality of terminals in a wireless communication network” (Patent Document 1 [0005] As a means for solving the problem, “a wireless communication unit that communicates with another device connected via a wireless communication network, a power status acquisition unit that acquires the power status of the device, A power supply unit that wirelessly supplies power to another device in response to a power supply request from another device connected via the wireless communication network when the power condition satisfies a predetermined condition. '' (Patent Document 1 [0006]) and the like.
特開２００９－２５３７６３号公報JP 2009-253763 A
　しかし、特許文献１では、「自装置」から「他装置」へ電力を供給することしか考慮されておらず、ユーザにとって使い勝手が悪い。 However, Patent Document 1 only considers supplying power from the “own device” to the “other device”, which is inconvenient for the user.
　上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。
  本願は上記課題を解決する手段を複数含んでいるが、その一例を挙げるならば、接続された他の機器との間で電力の送受信を行う映像機器において、電気を蓄積するバッテリーと、バッテリーに蓄積された電気を出力またはバッテリーに電気を入力する電源回路と、　他の機器との間で通信を行う通信部と、を有し、通信部は他の機器へ電力を要求するメッセージを送信可能であり、通信部が他の機器から電力を要求するメッセージを受信すると、電源回路を介してバッテリーに蓄積された電気を他の機器へ送信することを特徴とする。 In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present application includes a plurality of means for solving the above-described problems. For example, in a video device that transmits and receives power to and from other connected devices, a battery for storing electricity, It has a power supply circuit that outputs stored electricity or inputs electricity to the battery, and a communication unit that communicates with other devices, and the communication unit can send messages requesting power to other devices When the communication unit receives a message requesting power from another device, the electricity stored in the battery is transmitted to the other device via the power supply circuit.
　上記手段によれば、様々な種類の機器同士での電力の供給、受電が可能になり、ユーザにとっての使い勝手が向上する。 According to the above means, it is possible to supply and receive power between various types of devices, improving usability for the user.
伝送システムの一例を示すブロック図Block diagram showing an example of a transmission system 電力供給モードの指定メニュー表示遷移の一例を示す図The figure which shows an example of the designation | designated menu display transition of electric power supply mode 供給方向選択モードのシーケンスの一例を示す図The figure which shows an example of the sequence of supply direction selection mode 残量分割モードのシーケンスの一例を示す図The figure which shows an example of a sequence of remaining amount division mode 最長持続モードのシーケンスの一例を示す図Diagram showing an example of the sequence of the longest duration mode 複合機能機器４の一例を示すブロック図Block diagram showing an example of the multifunction device 4 ソース機器と複合機能機器を接続した一例を示す構成図Configuration diagram showing an example of connecting a source device and a multifunction device ソース機器と複合機能機器を接続した構成の電力供給のシーケンスの一例を示す図The figure which shows an example of the electric power supply sequence of the structure which connected the source device and the multifunctional device シンク機器と複合機能機器を接続した一例を示す構成図Configuration diagram showing an example of connecting a sink device and a multifunction device シンク機器と複合機能機器を接続した構成の電力供給のシーケンスの一例を示す図The figure which shows an example of the electric power supply sequence of the structure which connected the sink device and the multifunctional device 複合機の機器同士を接続した一例を示す構成図Configuration diagram showing an example of connecting devices of a multifunction device 複合機能機器同士を接続した構成の電力供給のシーケンスの一例を示す図The figure which shows an example of the sequence of the electric power supply of the structure which connected multi-function apparatus. 複合機能機器とバッテリーで駆動する無線伝送システムとを接続した一例を示す構成図Configuration diagram showing an example of connecting a multifunction device and a wireless transmission system driven by a battery
　以下、実施例について説明する。本実施例においては、ユーザが任意の方向への電力供給を指定し、その方向への電力伝送を行う例や、機器間で電力に関する情報を交信し、その結果に基づいて電力の供給方向を決めて電力伝送を行う例を説明する。 Hereinafter, examples will be described. In this embodiment, the user designates power supply in an arbitrary direction and transmits power in that direction, or communicates information about power between devices, and determines the power supply direction based on the result. An example will be described in which power transmission is determined.
　なお、本実施例において、「電力供給」や「電力を供給する」等の表現は、電気を供給することを意味する。 In the present embodiment, expressions such as “power supply” and “supply power” mean supplying electricity.
　図１は、ＨＤＭＩ伝送を用いる伝送システムの一例を示すブロック図であって、ソース機器１がシンク機器２とケーブル３を介して接続されており、ソース機器１からシンク機器２へ映像信号を供給するとともに、ソース機器１とシンク機器２との間で相互に電力を供給できるシステムである。 FIG. 1 is a block diagram illustrating an example of a transmission system using HDMI transmission, in which a source device 1 is connected to a sink device 2 via a cable 3 and a video signal is supplied from the source device 1 to the sink device 2 In addition, this is a system capable of mutually supplying power between the source device 1 and the sink device 2.
　ソース機器１は、例えばスマートフォン，携帯オーディオ機，タブレットPCである。また、シンク機器１は、例えばテレビ，プロジェクタ，車載ディスプレイである。 The source device 1 is, for example, a smartphone, a portable audio device, or a tablet PC. The sink device 1 is, for example, a television, a projector, or an in-vehicle display.
　ソース機器１は映像信号を再生する再生部１０１と映像信号を送信する映像送信部１０２、シンク機器２からＥＤＩＤ（Extended Display Identification Data）を読み出すＥＤＩＤ読出部１０３、ＣＥＣ（Consumer Electronics Control）通信を行うＣＥＣ通信部１０４、ソース機器１の各機能部を制御するソース制御部１０５、各機能部に電力を供給する電源回路部１０６、ＤＤＣ（Display Data Channel）＋５Ｖラインに電力を供給するＤＤＣ＋５Ｖ供給部１０７、シンク機器２からのＨＰＤ（Hot Plug Detect）信号を検出するＨＰＤ検出部１０８を有する。ＡＣアダプター１０９とバッテリー１１１は電源回路１０６に接続し、これらのいずれかが電源回路１０６に電力供給をする。バッテリー残量確認部１１０はバッテリー１１１の残量を確認する。 The source device 1 performs a reproduction unit 101 that reproduces a video signal, a video transmission unit 102 that transmits the video signal, an EDID reading unit 103 that reads EDID (Extended Display Identification Data) from the sink device 2, and CEC (Consumer Electronics Control) communication. CEC communication unit 104, source control unit 105 that controls each function unit of source device 1, power supply circuit unit 106 that supplies power to each function unit, and DDC + 5V supply unit 107 that supplies power to a DDC (Display Data Channel) + 5V line And an HPD detector 108 that detects an HPD (Hot Plug Detect) signal from the sink device 2. The AC adapter 109 and the battery 111 are connected to the power supply circuit 106, and any of these supplies power to the power supply circuit 106. The battery remaining amount confirmation unit 110 confirms the remaining amount of the battery 111.
　シンク機器２は映像信号を映像に変換する表示部２０１と映像信号をソース機器１から受ける映像受信部２０２、ソース機器１が読み出すＥＤＩＤ情報を保存するＥＤＩＤ記憶部２０３、ＣＥＣ通信を行うＣＥＣ通信部２０４、シンク機器２の各機能部を適切に制御するシンク制御部２０５、各機能部に適切に電力を供給する電源回路部２０７、ＨＰＤ信号を出力するＨＰＤ出力部２０８を有する。ＡＣアダプター２０９とバッテリー２１１は電源回路２０６に接続し、これらのいずれかが電源回路２０６に電力供給をする。バッテリー残量確認部２１０はバッテリー２１１の残量を確認する。 The sink device 2 includes a display unit 201 that converts a video signal into a video, a video reception unit 202 that receives the video signal from the source device 1, an EDID storage unit 203 that stores EDID information read by the source device 1, and a CEC communication unit that performs CEC communication. 204, a sink control unit 205 that appropriately controls each function unit of the sink device 2, a power supply circuit unit 207 that appropriately supplies power to each function unit, and an HPD output unit 208 that outputs an HPD signal. The AC adapter 209 and the battery 211 are connected to the power supply circuit 206, and any of these supplies power to the power supply circuit 206. The battery remaining amount confirmation unit 210 confirms the remaining amount of the battery 211.
　ケーブル３は、ソース機器１とシンク機器２とを接続するケーブルであって、例えばＨＤＭＩケーブルである。図１には本発明の説明に必要な映像信号伝送ライン３０１、ＤＤＣライン３０２、ＣＥＣ通信ライン３０３、ＤＤＣ＋５Ｖライン３０４、ＨＰＤライン３０５を抜粋して説明している。 The cable 3 is a cable for connecting the source device 1 and the sink device 2 and is, for example, an HDMI cable. In FIG. 1, a video signal transmission line 301, a DDC line 302, a CEC communication line 303, a DDC + 5V line 304, and an HPD line 305 necessary for explaining the present invention are extracted and described.
　ソース機器からシンク機器への電力供給はＤＤＣ＋５Ｖライン３０４などを用いて電力供給するなどの方法で行う。シンク機器からソース機器への電力供給はＨＰＤライン３０５などを用いて電力供給するなどの方法で行う。その他、図示しない別のラインを用いることも可能である。 Power is supplied from the source device to the sink device by a method such as supplying power using the DDC + 5V line 304 or the like. The power supply from the sink device to the source device is performed by a method of supplying power using the HPD line 305 or the like. In addition, it is possible to use another line (not shown).
　本実施例では、図１のように接続する双方の機器がバッテリーで駆動することが可能である場合、シンク機器２からソース機器１、またはソース機器１からシンク機器２に対して電力供給することを可能にする。これによって接続する双方の機器で構成するシステムとしての稼働時間を長くすることができる。どちらの方向への電力供給を行うかは以下に示す電力供給モード例などによって決定する。 In the present embodiment, when both devices connected as shown in FIG. 1 can be driven by a battery, power is supplied from the sink device 2 to the source device 1 or from the source device 1 to the sink device 2. Enable. As a result, it is possible to lengthen the operation time of the system configured by both connected devices. Which direction of power supply is performed is determined by the following power supply mode example.
　第一のモードは供給方向選択モードである。これは電力供給方向をユーザが決定するモードである。どちらか片方の機器のバッテリー残量を優先的に増やしたいときや、どちらか片方の機器がＡＣアダプターを通じて電源に接続されているときなどにこのモードを使うことが想定される。 The first mode is the supply direction selection mode. This is a mode in which the user determines the power supply direction. It is assumed that this mode is used when it is desired to preferentially increase the remaining battery level of one of the devices, or when one of the devices is connected to a power source through an AC adapter.
　モードの選択は接続するどちらか片方の機器からキー操作などで指定することができる。モードの指定方法の一例を図２に示す。どちらか一方の機器の全体メニューを表示し、全体メニュー画面からＨＤＭＩ端子設定を選択する(画面５０１)。移行した画面５０２で電力供給モード選択メニューを選択する。移行した画面５０３で供給方向選択モードを選択する。なお、この画面５０３では前回選択されたモードにカーソルが表示される設定としてもよい。移行した画面５０４で、現在操作中の機器から接続相手機器に電力供給を行うのか、接続相手機器から現在操作中の機器に電力供給を行うのかを選択する。移行した画面５０５で電力供給方向を再確認する。再確認が完了すると、選択した方向への電力供給が開始される。 The mode can be selected by key operation from either one of the connected devices. An example of the mode designation method is shown in FIG. The entire menu of either one of the devices is displayed, and the HDMI terminal setting is selected from the entire menu screen (screen 501). A power supply mode selection menu is selected on the shifted screen 502. The supply direction selection mode is selected on the shifted screen 503. In this screen 503, the cursor may be displayed in the previously selected mode. In the transitioned screen 504, it is selected whether to supply power from the currently operated device to the connected device or whether to supply power from the connected device to the currently operated device. The power supply direction is reconfirmed on the transitioned screen 505. When the reconfirmation is completed, power supply in the selected direction is started.
　図３は、ソースからシンクへの電力供給を選択する場合の処理の一例を示すシーケンス図である。７０１では、ソース機器１からシンク機器２へＤＤＣ＋５Ｖライン電力供給を行う。次に、７０２でシンク機器２はＨＰＤラインをＬｏｗレベル（以下、単に「Ｌ」と示す。）からＨｉｇｈレベル（以下、単に「Ｈ」と示す。）にしてソース機器１に対して接続確認を返す。７０３では、ソース機器１はシンク機器２からＥＤＩＤを読み込んで接続確認を完了する。 FIG. 3 is a sequence diagram showing an example of processing when power supply from the source to the sink is selected. In 701, DDC + 5V line power is supplied from the source device 1 to the sink device 2. Next, in step 702, the sink device 2 changes the HPD line from the low level (hereinafter simply referred to as “L”) to the high level (hereinafter simply referred to as “H”), and confirms connection to the source device 1. return. In 703, the source device 1 reads the EDID from the sink device 2 and completes the connection confirmation.
　その後、７１ではユーザが図２に示した方法などでどちらかの機器を用いて電力の供給方向を決定する。本実施例では、ソース機器１を用いて７１に示す操作を図２のように行った場合、すなわち、ソース機器１からシンク機器２に対して電力供給する選択がされた場合について説明する。 After that, in 71, the user determines the power supply direction by using either device by the method shown in FIG. In the present embodiment, a case where the operation shown in 71 is performed using the source device 1 as shown in FIG. 2, that is, a case where power supply from the source device 1 to the sink device 2 is selected will be described.
　７０４では、操作側のソース機器１からシンク機器２に対して電力供給能力があることの通知が行われる。７０５では、シンク機器２が電力供給を受ける場合には、シンク機器２からソース機器１へ電力供給の要求を示す返答を行う。７０６では、ソース機器１からシンク機器２への電力供給が開始される。 In 704, notification is made from the source device 1 on the operating side to the sink device 2 that there is power supply capability. In 705, when the sink device 2 receives power supply, the sink device 2 sends a response indicating a power supply request to the source device 1. In 706, power supply from the source device 1 to the sink device 2 is started.
　７２で電力供給を受ける側であるシンク機器２のバッテリーの充電完了が検出されると、７０７ではシンク機器２からソース機器１に対して給電停止を要求するメッセージを送信する。７０８ではソース機器１がそのメッセージに対して電力供給を停止することを示すメッセージをシンク機器２に対して送信し、電力供給が停止される。 When it is detected in 72 that the battery charging of the sink device 2 on the power receiving side is completed, in 707, the sink device 2 transmits a message requesting power supply stop to the source device 1. In 708, in response to the message, the source device 1 transmits a message indicating that the power supply is stopped to the sink device 2, and the power supply is stopped.
　また、電力供給側であるソース機器１のバッテリー残量が所定以下になる、またはソース機器１側からユーザが電力供給停止を選択するなどの場合、ソース機器１から電力供給の停止を示すメッセージをシンク機器２に対して通知し、電力供給を終了する。 Further, when the remaining battery level of the source device 1 on the power supply side becomes equal to or less than a predetermined value, or when the user selects the power supply stop from the source device 1 side, a message indicating the stop of power supply from the source device 1 is displayed. The sink device 2 is notified and the power supply is terminated.
　また、本実施例では、ソース機器１からシンク機器２へ電力を供給する例を説明したが、シンク機器２からソース機器１へ電力を供給することも可能である。すなわち、シンク機器２からソース機器１へ電力供給能力がある旨のメッセージを送信し、ソース機器１からシンク機器２へ電力供給を要求するメッセージを送信し、シンク機器２からソース機器１へ電力を供給し、ソース機器１からシンク機器２へ電力供給の停止の要求を行うことも可能である。以下の実施例でも同様に、ソース機器１からシンク機器２へ送ったメッセージやリクエスト等はシンク機器２からも送信可能であり、同様にシンク機器２からソース機器１へ送ったメッセージやリクエスト等もソース機器２からシンク機器２へ送信可能である。 In the present embodiment, the example in which power is supplied from the source device 1 to the sink device 2 has been described. However, it is also possible to supply power from the sink device 2 to the source device 1. That is, a message indicating that there is power supply capability from the sink device 2 to the source device 1 is transmitted, a message requesting power supply from the source device 1 to the sink device 2 is transmitted, and power is supplied from the sink device 2 to the source device 1. It is also possible to make a supply stop request from the source device 1 to the sink device 2. Similarly, in the following embodiments, messages and requests sent from the source device 1 to the sink device 2 can also be sent from the sink device 2, and similarly messages and requests sent from the sink device 2 to the source device 1 can also be sent. Transmission from the source device 2 to the sink device 2 is possible.
　このように、第一のモードによれば、接続された２つの機器においてユーザが選択した方向に電力を供給することが可能となる。 Thus, according to the first mode, power can be supplied in the direction selected by the user in the two connected devices.
　次に、第二のモードについて説明する。第二のモードは、接続する２つの機器のバッテリー残量を等しくなるように電力供給方向を決定する残量分割モードである。バッテリー残量に余裕のある機器から余裕の無い機器に対して、その残量に応じて電力を融通するときなどにこのモードを使うことなどが使用例として想定される。 Next, the second mode will be described. The second mode is a remaining amount division mode in which the power supply direction is determined so that the remaining battery amounts of two devices to be connected are equal. It is assumed as a use example that this mode is used when, for example, a device having a sufficient remaining battery capacity is used to a device having a small remaining battery capacity, depending on the remaining power.
　モードの指定方法は図２の５０３で残量分割モードを選択するなどの方法が例として挙げられる。 As an example of the mode designation method, a method such as selecting the remaining amount division mode at 503 in FIG.
　図４は、この残量分割モードの処理の一例を示すシーケンス図である。７０１から７０３までの接続確認までは図３と同様である。 FIG. 4 is a sequence diagram showing an example of processing in the remaining amount division mode. The connection confirmation from 701 to 703 is the same as in FIG.
　８１でユーザが残量分割モードを選択すると、８０１ではモード選択操作が行われたソース機器１からシンク機器２に対してバッテリー残量の報告を要求する。８２、８３ではソース機器１およびシンク機器２はそれぞれのバッテリー残量を確認し、８０２ではシンク機器２はソース機器１にその情報を伝達する。このバッテリー残量の情報は、双方の機器のバッテリー残量確認部１１０、２１０が検出して給電方向の決定に用いられる。ここで用いるバッテリー残量の情報の例としては、フル充電１００％に対する割合の情報や、A・Hour等の単位で得られる物理量の情報などが挙げられる。８４では、これらの情報を基に、バッテリー残量の多いほうから少ないほうに対して電力供給を行うという電力供給方向の決定をする。 When the user selects the remaining amount division mode in 81, in 801, the source device 1 that has performed the mode selection operation requests the sink device 2 to report the remaining battery amount. In 82 and 83, the source device 1 and the sink device 2 check the remaining battery levels, and in 802, the sink device 2 transmits the information to the source device 1. The information on the remaining battery level is detected by the remaining battery level checking units 110 and 210 of both devices and used for determining the feeding direction. Examples of information on the remaining battery level used here include information on the ratio to 100% full charge, information on physical quantities obtained in units such as A · Hour, and the like. In 84, based on these pieces of information, the power supply direction is determined such that power is supplied to the battery with the remaining amount from the largest to the smallest.
　８０３では、この決定結果をソース機器１からシンク機器２に対して伝達する。８０４ではこれに対してシンク機器２が返答し、８０５でシンク機器２からソース機器１へ電力供給が開始される。図４では、ソース機器１よりもシンク機器２のバッテリー残量が多く、シンク機器２からソース機器１へ電力供給を行う場合が例示されており、８０３では決定結果の通知と共に、あるいは決定結果の通知の代わりに、ソース機器１からシンク機器２に対して電力供給の要求メッセージが送信されている。シンク機器２よりもソース機器１のバッテリー残量が多い場合、８０３ではその結果がソース機器１からシンク機器２に対して伝達される。そして、その応答として８０４でシンク機器２からソース機器１へ電力供給を要求するメッセージが送信され、当該メッセージに応じてソース機器１からシンク機器２への電力供給が８０５で開始される。 In 803, the determination result is transmitted from the source device 1 to the sink device 2. In 804, the sink device 2 responds to this, and in 805, power supply from the sink device 2 to the source device 1 is started. FIG. 4 illustrates a case where the sink device 2 has more battery power than the source device 1 and power is supplied from the sink device 2 to the source device 1. In 803, the determination result is notified or the determination result is displayed. Instead of the notification, a power supply request message is transmitted from the source device 1 to the sink device 2. When the battery level of the source device 1 is greater than that of the sink device 2, the result is transmitted from the source device 1 to the sink device 2 in 803. In response, a message requesting power supply from the sink device 2 to the source device 1 is transmitted at 804, and power supply from the source device 1 to the sink device 2 is started at 805 in response to the message.
　８０６～８０９では、一定時間経過ごと（たとえば１分経過ごと）に前記バッテリー残量の情報交換を繰り返す。８１０、８１１では、情報交換の結果、双方のバッテリー残量が等しくなるか、または双方のバッテリー残量の差が所定の値以内となった時点で電力供給を終了する。 In steps 806 to 809, the information on the remaining battery level is exchanged every certain time (for example, every 1 minute). In 810 and 811, the power supply is terminated when the remaining battery amounts become equal or the difference between the remaining battery amounts is within a predetermined value as a result of the information exchange.
　なお、本実施例ではバッテリー残量を等分する場合を説明したが、６:４や７:３といったユーザが設定した任意の割合にバッテリー残量を分割するといった指定を可能にしてもよい。この場合、８１０、８１１において、情報交換の結果、バッテリー残量の割合がユーザの設定した任意の割合になった時点で電力供給を終了するようにすればよい。 In this embodiment, the case where the remaining amount of the battery is equally divided has been described. However, it may be possible to specify that the remaining amount of the battery is divided into an arbitrary ratio set by the user, such as 6: 4 or 7: 3. In this case, in 810 and 811, power supply may be terminated when the ratio of the remaining battery level reaches an arbitrary ratio set by the user as a result of information exchange.
　また、このモードを選択した時に、片方の機器がＡＣアダプターなどを通じて電源に接続していることを確認した場合や、給電の最中にいずれか一方の機器がＡＣアダプターなどを通じて電源に接続されたことが検出された場合には、自動的に電源に接続する側から接続しない側に電力供給するように自動的に設定してもよい。この場合は双方のバッテリーの充電完了をもって電力供給を終了する。 In addition, when this mode is selected, it is confirmed that one device is connected to the power supply through an AC adapter, etc., or one device is connected to the power supply through an AC adapter or the like during power feeding. If this is detected, it may be automatically set so that power is automatically supplied from the side connected to the power source to the side not connected. In this case, power supply is terminated when both batteries are fully charged.
　このように、第二のモードによれば、接続された２つの機器において、バッテリー残量に応じた適切な電力供給を行うことが可能となる。 Thus, according to the second mode, it is possible to perform appropriate power supply according to the remaining battery level in the two connected devices.
　次に、第三のモードについて説明する。第三のモードは、接続する２つの機器の残り稼働時間が等しく（あるいはその差がなるべく小さく）なるように電力供給方向を決定する最長持続モードである。２つの機器が連携してシステムとして作動している場合に、システム全体としてできるだけ長く稼働させたいときなどにこのモードを使うことが想定される。 Next, the third mode will be described. The third mode is the longest duration mode in which the power supply direction is determined so that the remaining operation times of two connected devices are equal (or the difference is as small as possible). When two devices are operating as a system in cooperation, it is assumed that this mode is used when it is desired to operate the system as long as possible.
　モードの指定方法は図２の５０３において最長持続モードを選択するなどの方法が一例としてあげられる。 An example of the mode designation method is to select the longest duration mode in 503 in FIG.
　図５は、最長持続モードの処理の一例を示すシーケンス図である。７０１から７０３までの接続確認までは図３と同様である。 FIG. 5 is a sequence diagram showing an example of processing in the longest duration mode. The connection confirmation from 701 to 703 is the same as in FIG.
　９１でユーザが最長持続モードを選択すると、９０１ではモード選択操作が行われたソース機器１からシンク機器２に対して残り稼働時間の報告を要求する。９２、９３ではソース機器１およびシンク機器２はそれぞれのバッテリー残量を確認して残り稼働時間を算出し、９０２でシンク機器２はソース機器１にその情報を伝達する。この残り稼動時間は、双方の機器のバッテリー残量確認部１１０、２１０が検出したバッテリー残量、ソース機器１、シンク機器２の単位時間当たりの消費電力等から算出可能である。 When the user selects the longest duration mode in 91, in 901, the source device 1 in which the mode selection operation is performed requests the sink device 2 to report the remaining operation time. In 92 and 93, the source device 1 and the sink device 2 check the remaining battery levels and calculate the remaining operating time. In 902, the sink device 2 transmits the information to the source device 1. The remaining operating time can be calculated from the remaining battery level detected by the remaining battery level checking units 110 and 210 of both devices, the power consumption per unit time of the source device 1 and the sink device 2, and the like.
　９４では、この情報を基に、残り稼働時間の多いほうから少ないほうに対して電力供給が行うという電力供給方向の決定をする。９０３では、この決定結果をソース機器１はシンク機器２に対して伝達する。９０４でこれにシンク機器２が返答すると、電力供給が開始される(９０５)。図５では、シンク機器２の残り稼働時間がソース機器１の残り稼働時間よりも多く、シンク機器２からソース機器１へ電力供給を行う場合が例示されており、９０３では決定結果の通知と共に、あるいは決定結果の通知の代わりに、ソース機器１からシンク機器２に対して電力供給の要求メッセージが送信されている。シンク機器２よりもソース機器の残り稼動時間が多い場合、９０３ではその結果がソース機器１からシンク機器２に対して伝達される。そして、その応答として９０４でシンク機器２からソース機器１へ電力供給を要求するメッセージが送信され、当該メッセージに応じてソース機器１からシンク機器２への電力供給が９０５で開始される。 In 94, based on this information, the power supply direction is determined such that the power is supplied from the longer remaining operation time to the shorter remaining operation time. In 903, the source device 1 transmits the determination result to the sink device 2. When the sink device 2 responds to this at 904, power supply is started (905). FIG. 5 illustrates a case where the remaining operating time of the sink device 2 is longer than the remaining operating time of the source device 1 and power is supplied from the sink device 2 to the source device 1. Alternatively, instead of notifying the determination result, a power supply request message is transmitted from the source device 1 to the sink device 2. When the remaining operating time of the source device is longer than that of the sink device 2, the result is transmitted from the source device 1 to the sink device 2 in 903. In response, a message requesting power supply from the sink device 2 to the source device 1 is transmitted at 904, and power supply from the source device 1 to the sink device 2 is started at 905 in response to the message.
　一定時間経過後（たとえば５分経過後）、９０７、９０８ではふたたび残り稼働時間の情報交換を行う。９７では、残り稼働時間の変化分と電力供給開始からの経過時間から、接続する２つの機器の残り稼働時間が等しく（あるいはその差がなるべく小さく）なる残り電力供給時間を算出する。９７で算出した残り電力供給時間が経過すると（９８）、９０９ではソース機器１からシンク機器２に対して電力供給を停止するメッセージを送信し、９１０ではそのメッセージに応じてシンク機器２は電力供給を停止する。 After a certain time has elapsed (for example, after 5 minutes have elapsed), at 907 and 908, information on the remaining operating time is exchanged again. In 97, the remaining power supply time is calculated from the change in the remaining operation time and the elapsed time from the start of power supply, so that the remaining operation times of the two connected devices are equal (or the difference is as small as possible). When the remaining power supply time calculated in 97 elapses (98), in 909, a message for stopping power supply is transmitted from the source device 1 to the sink device 2, and in 910, the sink device 2 supplies power according to the message. To stop.
　また、最長持続モードの場合でも、図８と同様に一定時間、たとえば１分ごとに情報交換を繰り返し行い、残り稼働時間が双方等しくなるか、または双方の残り稼働時間の差が所定の値以内となった時点で電力供給を終了してもよい。 Even in the longest duration mode, information exchange is repeated for a certain period of time, for example, every minute, as in FIG. 8, and the remaining operating time is equal to each other, or the difference between the remaining operating times is within a predetermined value. At this point, the power supply may be terminated.
　また、このモードを選択した時に、片方の機器がＡＣアダプターなどを通じて電源に接続していることを確認した場合や、給電の最中にいずれか一方の機器がＡＣアダプターなどを通じて電源に接続されたことが検出された場合には、自動的に電源に接続する側から接続しない側に電力供給するように自動的に設定してもよい。この場合は双方のバッテリーの充電完了をもって電力供給を終了する。 In addition, when this mode is selected, it is confirmed that one device is connected to the power supply through an AC adapter, etc., or one device is connected to the power supply through an AC adapter or the like during power feeding. If this is detected, it may be automatically set so that power is automatically supplied from the side connected to the power source to the side not connected. In this case, power supply is terminated when both batteries are fully charged.
　また、本実施例では各機器の残り稼働時間は各機器で算出するようにしているが、１つの機器で行うようにしてもよい。例えば、図５の９０２においてソース機器１がシンク機器２から残り稼動時間の代わりにバッテリー残量やシンク機器２の消費電力等の稼働時間の算出に必要な情報のみ受信し、ソース機器１においてシンク機器２の残り稼働時間の算出を行ってもよい。このようにすれば、シンク機器２に残り稼働時間を算出する機能が無かったとしても、残り稼働時間に基づく電源供給が可能となる。 In the present embodiment, the remaining operating time of each device is calculated by each device, but may be performed by one device. For example, in 902 of FIG. 5, the source device 1 receives only information necessary for calculating the operation time such as the remaining battery capacity and the power consumption of the sink device 2 from the sink device 2 instead of the remaining operation time. The remaining operating time of the device 2 may be calculated. In this way, even if the sink device 2 does not have a function for calculating the remaining operation time, it is possible to supply power based on the remaining operation time.
　このように、第三のモードによれば、接続された２つの機器で構成されるシステム全体の稼働時間をより長くすることが可能となる。 Thus, according to the third mode, it is possible to extend the operating time of the entire system composed of two connected devices.
　次に、第四のモードを説明する。第四のモードは、接続する２つの機器間のバッテリー残量や操作履歴等の情報を考慮して適切と思われるモードを推奨するおまかせモードである。 Next, the fourth mode will be described. The fourth mode is an automatic mode that recommends a mode that seems appropriate in consideration of information such as the remaining battery level and operation history between two connected devices.
　例えば、各機器間のバッテリー残量に所定値以上の差がある場合には、バッテリー残量の少ない方の機器が充電を必要とするケースが多いと判断して、自動的に残量分割モードを推奨、あるいは選択する。 For example, if there is a difference in the remaining battery level between devices, the remaining battery level will automatically be determined by determining that the device with the lower battery level often needs charging. Recommended or selected.
　また、例えばバッテリー残量の差異が所定値以内の場合には、操作を行っている側が充電を必要とするケースが多いと判断して、操作を行っている側の機器に対して相手機器から電力供給することを推奨、あるいは選択する。 For example, when the difference in the remaining battery level is within a predetermined value, it is determined that there are many cases in which the operating side needs charging, and the device on the operating side is Recommend or choose to supply power.
　また、例えば操作履歴に基づいて、過去の選択数が最多であるモードを推奨、あるいは選択する。 Also, for example, based on the operation history, a mode with the largest number of past selections is recommended or selected.
　モードの指定方法は図２の５０３においておまかせモードを選択するなどの方法が一例としてあげられる。 An example of the mode designation method is a method of selecting the automatic mode in 503 in FIG.
　このように、第四のモードによれば、接続された２つの機器において、ユーザの手間を省きつつより良い給電を行うことが可能となる。 As described above, according to the fourth mode, it is possible to perform better power feeding in two connected devices while saving the user's trouble.
　なお、第一～第四のいずれのモードでも、接続する各機器は、受電・給電に必要な電力伝送、接続確認、情報交換といった機能以外の表示機能や映像伝送機能といった機能等を自動的に停止して電力を節約するように設定し、充電中の電力消費を抑えることで充電効率を上げるようにしてもよい。 In any of the first to fourth modes, each connected device automatically performs functions such as display functions and video transmission functions other than functions such as power transmission, connection confirmation, and information exchange necessary for power reception and power supply. It may be set to stop and save power, and charging efficiency may be increased by suppressing power consumption during charging.
　このように、接続する機器間でどちらの方向にも電力供給が可能であれば、シンク機器２とソース機器１との間でそれぞれの電力の状態やユーザの意図によって、任意の方向への電力供給を行うことができる。 Thus, if power can be supplied in either direction between the connected devices, the power in any direction between the sink device 2 and the source device 1 depending on the state of the respective power and the user's intention. Supply can be made.
　図６に本実施例の複合機能機器４の構成図の一例を示す。複合機能機器４はソース機能回路４０２とシンク機能回路４０３、それらを切り換える切換制御部４０４から構成されている。ソース機能回路４０２の構成は図１のソース機器１と同様であり、またシンク機能回路４０３は図１のシンク機器２と同様であることから、説明は省略する。 FIG. 6 shows an example of a configuration diagram of the multi-function device 4 of the present embodiment. The composite function device 4 includes a source function circuit 402, a sink function circuit 403, and a switching control unit 404 for switching between them. The configuration of the source function circuit 402 is the same as that of the source device 1 in FIG. 1, and the sink function circuit 403 is the same as that of the sink device 2 in FIG.
　複合機能機器４がシンク機器へ映像信号を送信またはシンク機器から電力を受電、またはシンク機器へ電力を供給するといったソース機能を行うときは、切替制御部４０４が外部入出力端子４０１をソース機能回路４０２に接続することによりソース機能を実現する。 When the composite function device 4 performs a source function such as transmitting a video signal to the sink device, receiving power from the sink device, or supplying power to the sink device, the switching control unit 404 connects the external input / output terminal 401 to the source function circuit. By connecting to 402, the source function is realized.
　複合機能機器４が別のソース機器から映像信号を受信、またはソース機器から電力を受電、またはソース機器へ電力を供給するといったシンク機能を行うときは、切替制御部４０４がケーブル３に接続する外部入出力端子４０１をシンク機能回路４０３に接続することによりシンク機能を実現する。 When the composite function device 4 performs a sink function such as receiving a video signal from another source device, receiving power from the source device, or supplying power to the source device, the switching control unit 404 is connected to the cable 3 The sink function is realized by connecting the input / output terminal 401 to the sink function circuit 403.
　このように切替制御部４０４によってソース機能回路４０２に接続するか、シンク機能回路４０３に接続するかにより、複合機能機器４はソースとしての機能を使うか、シンクとして別のソース機器に電力供給を行うかを選択することができる。
＜実施例２-１　ソース機器と複合機能機器との接続の例＞
　はじめに、図７のようにソース機能とシンク機器から電力を供給される機能とを持つソース機器１１と、ソース機能・シンク機能の双方を有し、シンク機器、ソース機器いずれに対しても電力受電・供給できる機能を持つ複合機能機器４とがケーブル３を介して接続する構成について述べる。 Thus, depending on whether the switching control unit 404 is connected to the source function circuit 402 or the sink function circuit 403, the multifunction device 4 uses the function as the source or supplies power to another source device as the sink. You can choose what to do.
<Example 2-1 Example of connection between source device and multifunction device>
First, as shown in FIG. 7, the source device 11 has both a source function and a function to which power is supplied from the sink device, and has both a source function and a sink function. Both the sink device and the source device receive power. A configuration in which the multifunction device 4 having a function that can be supplied is connected via the cable 3 will be described.
　この組み合わせの機器間において可能な電力供給は、複合機能機器４からソース機器１１への電力供給のみであるので、この組み合わせの機器がケーブルを介して接続されたことを確認した時点で、ユーザが複合機能機器４からソース機器１１に対して電力供給を行おうとしている意図が明確となったと判断し、その情報に基づく電力供給を開始することが可能である。また、電力供給側である複合機能機器４の表示画面２０１において、電力供給開始の可否の選択をユーザに問うＯＳＤ画面を表示してもよい。 Since the power supply that can be performed between the devices in this combination is only the power supply from the multifunction device 4 to the source device 11, when the user confirms that the devices in this combination are connected via the cable, It is possible to determine that the intention to supply power from the multi-function device 4 to the source device 11 is clear, and to start power supply based on the information. In addition, on the display screen 201 of the multifunction device 4 on the power supply side, an OSD screen that asks the user whether or not to start power supply may be displayed.
　図８は、本実施例の処理の一例を示すシーケンス図である。ソース機器１１、複合機能機器４の双方をケーブル３に接続すると、複合機能機器４はまずＤＤＣ＋５Ｖラインに電力供給されているかを確認する。確認されれば接続相手がソースであることが確認されるので、複合機能機器４はシンク機能を有するべく切替制御部４０４がケーブル３に接続する外部入出力端子４０１をシンク機能回路４０３に接続する。 FIG. 8 is a sequence diagram showing an example of processing of this embodiment. When both the source device 11 and the multifunction device 4 are connected to the cable 3, the multifunction device 4 first confirms whether or not power is supplied to the DDC + 5V line. If it is confirmed, it is confirmed that the connection partner is the source. Therefore, the switching function unit 404 connects the external input / output terminal 401 connected to the cable 3 to the sink function circuit 403 so as to have the sink function. .
　ＤＤＣ＋５Ｖラインの電力が確認されない場合（１０１１）、相手のソース機器のバッテリーが枯渇しているためにＤＤＣ＋５Ｖラインに電力供給できないケースも考えられるので、１００１で複合機能機器４からソース機器１に対してＨＰＤラインを用いて電力供給する。これによってソース機器１が１００２でＤＤＣ＋５Ｖラインに電力供給した場合は、複合機能機器４は+ＤＤＣ５Ｖ電力供給を確認し(１０１２)、シンク機能を有するべく切替制御部４０４がケーブル３に接続する外部入出力端子４０１をシンク機能回路４０３に接続する(１０１３)。 If the power of the DDC + 5V line is not confirmed (1011), there is a case where power cannot be supplied to the DDC + 5V line because the battery of the other source device is depleted. Power is supplied using the HPD line. As a result, when the source device 1 supplies power to the DDC + 5V line at 1002, the multifunction device 4 confirms the + DDC5V power supply (1012), and the switching control unit 404 connects to the cable 3 to have a sink function. The output terminal 401 is connected to the sink function circuit 403 (1013).
　１００３では、シンクとなった複合機能機器４はソース機器１１に対してＨＰＤラインの電力供給を維持する。その後、１００４でシンクとしての機能の伝達であるＥＤＩＤの読み出しが行われる。このときに、複合機能機器４は自信が接続するソース機器に対して電力供給可能であることをＥＤＩＤに記載することで、電力供給能力をソース機器１に伝えてもよい。 In 1003, the composite function device 4 serving as the sink maintains the HPD line power supply to the source device 11. Thereafter, in step 1004, reading of EDID, which is transmission of a function as a sink, is performed. At this time, the multi-function device 4 may transmit the power supply capability to the source device 1 by describing in the EDID that power can be supplied to the source device to which the user is connected.
　続いて１００５でソース機器１から複合機能機器４に対して電力要求情報が伝達される。この電力要求伝達は、例えば特許文献１記載の方法などによって行う。いずれかの方法で電力要求情報を受けた複合機能機器４は１００６でそれに対する返答を返す。この情報交換で電力受給条件が整えば、１００７で複合機能機器４はソース機器１に対して電力供給を開始する。 Subsequently, power request information is transmitted from the source device 1 to the multifunction device 4 at 1005. This power request transmission is performed by the method described in Patent Document 1, for example. The multi-function device 4 that has received the power request information by any method returns a response to it in 1006. If the power receiving condition is prepared by this information exchange, the multifunction device 4 starts supplying power to the source device 1 in 1007.
　電力要求情報で要求された条件がこの時点でＨＰＤラインから供給されている電力と同じであればそのままＨＰＤラインからの電力供給条件を維持し、電力要求情報で要求された電力がこの時点でＨＰＤラインから供給されている電力と異なっていれば要求された条件に変更する。 If the condition requested by the power request information is the same as the power supplied from the HPD line at this time, the power supply condition from the HPD line is maintained as it is, and the power requested by the power request information is HPD at this time. If it is different from the power supplied from the line, it will be changed to the required condition.
　電力供給を始める前に複合機能機器４に備えられている表示画面で、電力供給開始の可否の選択をユーザに問うＯＳＤ画面を表示し、ユーザがキー操作等で電力供給開始を許可してから電力供給開始してもよい。受電側であるソース機器１のバッテリー充電が完了する、複合機能機器４のバッテリー残量が所定以下になりこれ以上電力供給できなくなる、などの事由により電力供給を終了する場合には、事由の生じた側の機器から電力供給停止を要求し、電力供給は停止する(１００８、１００９)。 Before starting power supply, the OSD screen is displayed on the display screen provided in the multifunction device 4 to ask the user whether or not to start power supply, and after the user permits the power supply start by key operation or the like. You may start electric power supply. If the power supply is terminated due to reasons such as the battery charging of the source device 1 on the power receiving side being completed or the remaining battery level of the multifunction device 4 being below a predetermined level, the power cannot be supplied any more. A power supply stop is requested from the other device, and the power supply is stopped (1008, 1009).
　図８に示したシーケンスを実現するためには複合機能機器４はシンクとしての機能を備える必要があるためにシンク機能回路４０３を有するが、シンク機能回路４０３の中で図８のシーケンスに使用する部分は、ＥＤＩＤ記憶部２０３、シンク制御部２０５、ＨＰＤ出力部２０８と電力要求情報受信のための機能、である。 In order to realize the sequence shown in FIG. 8, the multi-function device 4 has a sink function circuit 403 because it needs to have a function as a sink, and is used in the sequence of FIG. 8 in the sink function circuit 403. The part includes an EDID storage unit 203, a sink control unit 205, an HPD output unit 208, and a function for receiving power request information.
　例えば電力要求情報の送受信をＣＥＣ通信で行う場合はＣＥＣ通信部２０４で電力情報の送受信を行うが、この場合映像受信部２０２は本発明による電力供給機能を実現するためには特に必要としていない。そのため、電力供給に不要な部分および回路は省いても構わない。 For example, when power request information is transmitted and received by CEC communication, power information is transmitted and received by the CEC communication unit 204. In this case, the video receiving unit 202 is not particularly necessary to realize the power supply function according to the present invention. For this reason, parts and circuits unnecessary for power supply may be omitted.
　ただし、ＨＤＭＩのシンク機器としての機能を搭載するためには、映像表示機器であるシンク機器として必須の表示機能を備えることがＨＤＭＩの規定に定められている。そのため、複合機能機器４は電力供給に必要な機能に加えて、映像機器としてのシンク機器としても機能するために必要とする機能を備えてもよい。 However, in order to install a function as an HDMI sink device, it is stipulated in the HDMI regulations that a display device that is essential as a sink device, which is a video display device, is provided. Therefore, the multifunction device 4 may include a function necessary for functioning as a sink device as a video device in addition to a function necessary for power supply.
　図８のシーケンスでは初めにＤＤＣ＋５Ｖの供給確認(１０１１)、ＨＰＤラインで電力を供給した後に再度ＤＤＣ＋５Ｖの供給確認(１０１２)し、いずれかでＤＤＣ＋５Ｖ供給を確認すれば接続相手はソース機器である、という判断を行ったが、この他の方法で相手機器の種別確認を行ってもよい。
＜実施例２-２　シンク機器と複合機能機器との接続の例＞
　次に図９のようにシンク機能とソース機器から電力を供給される機能を持ちバッテリー１３０１で駆動するシンク機器７と、複合機能機器４とがケーブル３を介して接続する構成について述べる。 In the sequence of FIG. 8, first, supply confirmation of DDC + 5V (1011), supply of power through the HPD line, and then confirmation of supply of DDC + 5V again (1012), if DDC + 5V supply is confirmed in either, the connection partner is the source device. However, the type of the counterpart device may be confirmed by another method.
<Example 2-2 Example of connection between sink device and multifunction device>
Next, a configuration in which the sink device 7 having the sink function and the function of supplying power from the source device and driven by the battery 1301 and the composite function device 4 are connected via the cable 3 as shown in FIG.
　この組み合わせの機器において可能な電力供給は、複合機能機器４からシンク機器７への電力供給のみであるので、この組み合わせの機器がケーブルを介して接続されたことを確認した時点で、ユーザが複合機能機器４からシンク機器７に対して電力供給を行おうとしている意図が明確となったと判断し、その情報に基づく電力供給を開始することが可能である。また、電力供給側である複合機能機器４の表示画面２０１において、電力供給開始の可否の選択をユーザに問うＯＳＤ画面を表示してもよい。 Since the power supply that can be performed in the device of this combination is only power supply from the composite function device 4 to the sink device 7, the user confirms that the device of this combination is connected via the cable. It is possible to determine that the intention to supply power from the functional device 4 to the sink device 7 has been clarified, and to start power supply based on the information. In addition, on the display screen 201 of the multifunction device 4 on the power supply side, an OSD screen that asks the user whether or not to start power supply may be displayed.
　図１０は、本実施例における処理の一例を示すシーケンス図である。シンク機器７、複合機能機器４の双方をケーブル３に接続すると、図８と同様に複合機能機器４はまずＤＤＣ＋５Ｖラインに電力供給されているかを確認し(１１１１)、確認されなければ１１０１で複合機能機器４からソース機器１に対してＨＰＤラインを用いて電力供給する。ここでもＤＤＣ＋５Ｖラインに給電されていないことを確認すると、接続された機器がシンク機能を有する機器であると判断し、複合機能機器４はソース機能を有するべく切替制御部４０４がケーブル３に接続する外部入出力端子４０１をソース機能回路４０２に接続する(１１１３)。 FIG. 10 is a sequence diagram showing an example of processing in the present embodiment. When both the sink device 7 and the composite function device 4 are connected to the cable 3, as in FIG. 8, the composite function device 4 first checks whether power is supplied to the DDC + 5V line (1111). Power is supplied from the functional device 4 to the source device 1 using the HPD line. Here again, when it is confirmed that power is not supplied to the DDC + 5V line, it is determined that the connected device is a device having a sink function, and the multifunction device 4 connects the switch control unit 404 to the cable 3 so as to have a source function. The external input / output terminal 401 is connected to the source function circuit 402 (1113).
　ソースとなった複合機能機器４は１１０２でＤＤＣ＋５Ｖラインに電力供給し、１１０３でシンク機器７はＨＰＤラインを高電圧(Ｌ→Ｈ)とすることで接続確認を返す。その後、１１０４でＥＤＩＤの読み出しが行われる。 The multi-function device 4 that is the source supplies power to the DDC + 5V line in 1102, and in 1103, the sink device 7 returns a connection confirmation by setting the HPD line to a high voltage (L → H). Thereafter, at 1104, EDID is read.
　続いて１１０５でシンク機器７から複合機能機器４に対して電力要求情報が伝達される。この電力要求伝達は、例えば特許文献１記載の方法などによって行う。いずれかの方法で電力要求情報を受けた複合機能機器４は１１０６でそれに対する返答を返す。この情報交換で電力受給条件が整えば、１１０７で複合機能機器４はシンク機器７に対して電力供給を開始する。 Subsequently, power request information is transmitted from the sink device 7 to the multifunction device 4 in 1105. This power request transmission is performed by the method described in Patent Document 1, for example. The multi-function device 4 that has received the power request information by any method returns a response to it in 1106. If the power receiving condition is established by this information exchange, the multifunction device 4 starts supplying power to the sink device 7 in 1107.
　電力要求情報で要求された条件がこの時点でＤＤＣ＋５Ｖラインから供給されている電力と同じであればそのままＤＤＣ＋５Ｖラインからの電力供給条件を維持する。電力要求情報で要求された電力がこの時点でＤＤＣ＋５Ｖラインから供給されている電力と異なっていれば要求された条件に変更する。 If the condition requested in the power request information is the same as the power supplied from the DDC + 5V line at this time, the power supply condition from the DDC + 5V line is maintained as it is. If the power requested by the power request information is different from the power supplied from the DDC + 5V line at this time, the requested condition is changed.
　実際に電力供給を始める前に複合機能機器４に備えられている表示画面で、電力供給開始の可否の選択をユーザに問うＯＳＤ画面を表示し、ユーザがキー操作等で電力供給開始を許可してから電力供給開始してもよい。受電側であるシンク機器７のバッテリー充電が完了する、複合機能機器４のバッテリー残量が所定以下になりこれ以上電力供給できなくなる、などの事由により電力供給を終了する場合には、事由の生じた側の機器から電力供給停止を要求し、電力供給は停止する(１００８、１００９)。 Before actually starting power supply, the OSD screen is displayed on the display screen provided in the multifunction device 4 to ask the user whether or not to start power supply, and the user permits start of power supply by key operation or the like. After that, power supply may be started. If the power supply is terminated due to reasons such as the battery charging of the sink device 7 on the power receiving side being completed or the remaining battery level of the multi-function device 4 being less than a predetermined value, the power cannot be supplied any more. A power supply stop is requested from the other device, and the power supply is stopped (1008, 1009).
　図１０に示したシーケンスを実現するためには複合機能機器４はソースとしての機能を備える必要があるためにソース機能回路４０２を有するが、ソース機能回路４０２の中で図１０のシーケンスに使用する部分は、ＥＤＩＤ読出部１０３、ソース制御部１０５、ＤＤＣ＋５Ｖ供給部１０７、ＨＰＤ検出部１０８と電力要求情報受信のための機能、である。 In order to realize the sequence shown in FIG. 10, the multi-function device 4 has a source function circuit 402 because it needs to have a function as a source, and is used for the sequence of FIG. 10 in the source function circuit 402. The parts are an EDID reading unit 103, a source control unit 105, a DDC + 5V supply unit 107, an HPD detection unit 108, and a function for receiving power request information.
　例えば電力要求情報の送受信をＣＥＣ通信で行う場合はＣＥＣ通信部１０４で電力情報の送受信を行うが、この場合再生部１０１や映像受信部１０２は本発明による電力供給機能を実現するためには特に必要としていない。そのため、電力供給に不要な部分および回路は省いても構わない。 For example, when transmitting and receiving power request information by CEC communication, the CEC communication unit 104 transmits and receives power information. In this case, the playback unit 101 and the video receiving unit 102 are particularly useful for realizing the power supply function according to the present invention. I don't need it. For this reason, parts and circuits unnecessary for power supply may be omitted.
　ただし、ＨＤＭＩのソース機器としての機能を搭載するためには、映像表示機器であるソース機器として必須の表示機能を備えることがＨＤＭＩの規定に定められている。そのため、複合機能機器４は電力供給に必要な機能に加えて、映像機器としてのソース機器としても機能するために必要とする機能を備えてもよい。 However, in order to install a function as an HDMI source device, the HDMI specification stipulates that a display device that is essential as a source device that is a video display device is provided. Therefore, the multifunction device 4 may include a function necessary for functioning as a source device as a video device in addition to a function necessary for power supply.
　図１０のシーケンスでは初めにＤＤＣ＋５Ｖの供給確認(１１１１)、ＨＰＤラインで電力を供給した後に再度ＤＤＣ＋５Ｖの供給確認(１１１２)し、いずれもＤＤＣ＋５Ｖ供給を確認しなければＤＤＣ＋５Ｖに電力供給を行い、接続相手がＨＰＤ Ｌ→Ｈを返せば接続相手機器はシンク機器である、という判断を行ったが、この他の方法で相手機器の種別確認を行ってもよい。
＜実施例２-３　複合機能機器同士の接続の例＞
　次に図１１のように、ソース機能・シンク機能と、シンク機器、ソース機器いずれに対しても電力受電・供給できる機能とを持つ複合機能機器である４１、４２がケーブル３を介して接続する構成について述べる。 In the sequence of FIG. 10, first, supply confirmation of DDC + 5V (1111), supply of power through the HPD line, and then supply confirmation of DDC + 5V again (1112). If neither supply of DDC + 5V is confirmed, supply power to DDC + 5V and connect If the partner returns HPDL L → H, it is determined that the connection partner device is a sink device. However, the type of the partner device may be confirmed by another method.
<Example 2-3 Connection Example of Multifunctional Devices>
Next, as shown in FIG. 11, 41 and 42, which are composite function devices having a source function / sink function and a function capable of receiving and supplying power to both the sink device and the source device, are connected via the cable 3. The configuration will be described.
　この場合、複合機能機器４１から複合機能機器４２、または複合機能機器４２から複合機能機器４１どちらの方向にも電力供給が可能である。従って実施例１に示した各モードでの電力供給が可能である。 In this case, power can be supplied in either direction from the multi-function device 41 to the multi-function device 42, or from the multi-function device 42 to the multi-function device 41. Therefore, power can be supplied in each mode shown in the first embodiment.
　図１２に本実施例の一例として、図３と同様の供給方向選択モードの場合のシーケンス図の一例を示す。まず先にケーブルに接続される側(本実施例では複合機能機器４１とする)がまずＤＤＣ＋５Ｖラインの電力供給を確認する(１２１２)。電力供給が確認されなければ１２０１でＨＰＤラインに電力供給したのちに再度ＤＤＣ＋５Ｖラインの電力供給を確認する(１２１３)。それでも電力供給が確認されなければ、複合機能機器４１はソース機能を有するべく切替制御部４０４がケーブル３に接続する外部入出力端子４０１をソース機能回路４０２に接続し(１２１４)、１２０２でＤＤＣ＋５Ｖラインに電力供給する。 FIG. 12 shows an example of a sequence diagram in the case of the supply direction selection mode similar to FIG. 3 as an example of the present embodiment. First, the side connected to the cable (referred to as the multi-function device 41 in this embodiment) first confirms the power supply of the DDC + 5V line (1212). If power supply is not confirmed, power is supplied to the HPD line in 1201, and then the power supply of the DDC + 5V line is confirmed again (1213). If the power supply is still not confirmed, the multifunction device 41 connects the external input / output terminal 401 connected to the cable 3 to the source function circuit 402 so as to have the source function (1214), and the DDC + 5V line at 1202 To power.
　後からケーブルに接続される側(本実施例では複合機能機器４２とする)がＤＤＣ＋５Ｖラインの電力供給を確認する(１２１６)。ここでＤＤＣ＋５Ｖラインの電力供給を検出したことを受けて、シンク機能を有するべく切替制御部４０４がケーブル３に接続する外部入出力端子４０１をシンク機能回路４０３に接続する(１２１７)。以下のシーケンスは図３と同様である。 Later, the side connected to the cable (in this embodiment, the multifunction device 42) confirms the power supply of the DDC + 5V line (1216). Here, in response to detecting the power supply of the DDC + 5V line, the switching control unit 404 connects the external input / output terminal 401 connected to the cable 3 to the sink function circuit 403 so as to have the sink function (1217). The following sequence is the same as in FIG.
　２台の複合機能機器をシンク・ソースどちらに割り当てるかの方法についてはこれ以外の方法でも構わない。例えば、ケーブル接続検出機能を複合機能機器が持つ場合、先に接続した機器はケーブルの反対側に何も機器が接続していないことを検知した時点でソースとなる。後から接続した機器はケーブルの反対側にソース機器が接続していることを検知した時点でシンクとなる、という方法などが例として挙げられる。 ∙ Other methods may be used as a method of assigning two multifunction devices to either sink or source. For example, when a multifunction device has a cable connection detection function, the device connected first becomes the source when it is detected that no device is connected to the opposite side of the cable. An example is a method in which a device connected later becomes a sink when it is detected that a source device is connected to the opposite side of the cable.
　このように接続する機器の一方がソース機能・シンク機能とシンク機器・ソース機器いずれに対しても電力受電・供給できる機能を持つ複合機能機器であることにより、複合機能機器と接続する相手機器がソースまたはシンクのいずれであっても電力供給を行うことができる。 Since one of the devices connected in this way is a multi-function device that has the function of receiving and supplying power to both the source function / sink function and the sink device / source device, the partner device connected to the multi-function device Power can be supplied from either the source or the sink.
　また、複合機能機器同士が接続することにより、それぞれの電力の状態やユーザの意図によって、任意の方向への電力供給を行うことができる。 In addition, by connecting the multifunctional devices, it is possible to supply power in an arbitrary direction depending on the state of each power and the user's intention.
　実施例１、２では図１、７、９および１１に示したようにソース機器、シンク機器あるいは複合機能機器による組み合わせの電力供給について述べたが、これに限らず電力の供給が可能である。 In the first and second embodiments, the combination power supply by the source device, the sink device, or the multifunction device is described as shown in FIGS. 1, 7, 9 and 11, but the power supply is not limited to this.
　図１３の例は複合機能機器４とバッテリー１３０１で駆動する無線伝送システム１３０２と接続して電力供給を行う例である。このように複合機能機器４がバッテリーで駆動する無線伝送システムや光ケーブルなどのアクティブケーブルのような伝送システムと接続している場合などに、実施例２に示したのと同様に供給方向選択モード、残量分割モード、最長持続モードなどを選択して必要な方向に電力を受給し合うようにすることもできる。 The example of FIG. 13 is an example in which power is supplied by connecting to the multifunction device 4 and the wireless transmission system 1302 driven by the battery 1301. In this way, when the multifunction device 4 is connected to a transmission system such as a wireless transmission system driven by a battery or an active cable such as an optical cable, the supply direction selection mode, as shown in the second embodiment, It is also possible to select the remaining amount division mode, the longest duration mode, and the like so as to receive power in the necessary direction.
　残量分割モード、最長持続モードを用いるためには無線伝送システム１３０２はバッテリー残量を確認する機能を持つバッテリー残量確認部を有し、さらにその情報を複合機能機器４に伝える機能を有する必要がある。 In order to use the remaining amount division mode and the longest duration mode, the wireless transmission system 1302 needs to have a battery remaining amount confirmation unit having a function of confirming the remaining amount of the battery, and further to have a function of transmitting the information to the multifunction device 4 There is.
　このようにソース機器とシンク機器の組み合わせに限らず、その他の機器間においても電力供給が可能である。 Thus, not only the combination of the source device and the sink device but also power can be supplied between other devices.
　上記各実施例によれば、様々な種類の機器同士で各機器の電力状態やユーザの意志に従った電力の供給、受電が可能になり、ユーザにとっての使い勝手が向上する。 According to each of the embodiments described above, various types of devices can supply and receive power according to the power state of each device and the user's will, improving usability for the user.
１：ソース機器、２：シンク機器、３：ケーブル、４、４１、４２：複合機能機器、７：プロジェクタ、１３０１：バッテリー、１３０２、１３０３：無線伝送システム、１０１：再生部、１０２：映像送信部、１０３：ＥＤＩＤ読み出し部、１０４：ＣＥＣ通信部、１０５：ソース制御部、１０６：電源回路部、１０７：ＤＤＣ＋５Ｖ部、１０８：ＨＰＤ検出部、１０９：ＡＣアダプター、１１０:バッテリー残量確認部、１１１：バッテリー、２０１：表示部、２０２：映像受信部、２０３：ＥＤＩＤ記憶部、２０４：ＣＥＣ通信部、２０５：シンク制御部、２０６：電源回路部、２０８：ＨＰＤ出力部、２０９：ＡＣアダプター、２１０：バッテリー残量確認部、 ２１１：バッテリー、３０１：映像信号伝送ライン、３０２：ＤＤＣライン、３０３：ＣＥＣ通信ライン、３０４：ＤＤＣ＋５Ｖライン、３０５：ＨＰＤライン、 ４０１：外部入出力端子、４０２：ソース機能回路、４０３：シンク機能回路、４０４：切替制御部、４０５：電源回路、４０６：バッテリー残量確認部、４０７：バッテリー、４０８：ＡＣアダプター、５０１-５０６：モード選択画面 1: source device, 2: sink device, 3: cable, 4, 41, 42: multifunction device, 7: projector, 1301: battery, 1302, 1303: wireless transmission system, 101: playback unit, 102: video transmission unit , 103: EDID reading unit, 104: CEC communication unit, 105: source control unit, 106: power supply circuit unit, 107: DDC + 5V unit, 108: HPD detection unit, 109: AC adapter, 110: battery remaining amount confirmation unit, 111 : Battery, 201: Display unit, 202: Video receiving unit, 203: EDID storage unit, 204: CEC communication unit, 205: Sink control unit, 206: Power supply circuit unit, 208: HPD output unit, 209: AC adapter, 210 : Battery remaining amount confirmation unit, 211: Battery, 301: Video signal transmission line, 302: DDC 303: CEC communication line 304: DDC + 5V line 305: HPD line 401: external input / output terminal 402: source function circuit 403: sink function circuit 404: switching control unit 405: power supply circuit 406: Battery remaining amount confirmation unit, 407: battery, 408: AC adapter, 501-506: mode selection screen

Claims (9)

  1. 　接続された他の機器との間で電気の供給又は受給を行う映像機器であって、
    　電気を蓄積するバッテリーと、
    　前記バッテリーに蓄積された電気を出力または前記バッテリーに電気を入力する電源回路と、
    　前記他の機器との間で通信を行う通信部と、を有し、
    　前記通信部は前記他の機器へ電気を要求するメッセージを送信可能であり、
    　前記通信部が前記他の機器から電気を要求するメッセージを受信すると、前記電源回路を介して前記バッテリーに蓄積された電気を前記他の機器へ供給することを特徴とする映像機器。     A video device that supplies or receives electricity with other connected devices,
    A battery that stores electricity,
    A power supply circuit for outputting electricity stored in the battery or inputting electricity to the battery;
    A communication unit that communicates with the other device,
    The communication unit can transmit a message requesting electricity to the other device,
    When the communication unit receives a message requesting electricity from the other device, the video device supplies the electricity stored in the battery to the other device via the power supply circuit.
  2. 　請求項１の映像機器であって、
    　前記バッテリーの残量を確認するバッテリー残量確認部を有し、
    　前記バッテリー残量確認部で確認したバッテリーの残量と、前記通信部で受信する前記他の機器のバッテリーの残量に関する情報とを比較し、当該比較の結果を前記通信部を介して前記他の機器へ伝えることを特徴とする映像機器。     The video equipment according to claim 1,
    A battery remaining amount confirmation unit for confirming the remaining amount of the battery;
    The battery remaining amount confirmed by the battery remaining amount confirmation unit is compared with the information regarding the remaining amount of battery of the other device received by the communication unit, and the result of the comparison is compared with the other via the communication unit. Video equipment characterized by transmitting to other equipment.
  3. 　請求項１の映像機器であって、
    　前記バッテリーの残量を確認するバッテリー残量確認部を有し、
    　前記バッテリー残量確認部で確認したバッテリーの残量と、前記通信部で受信する前記他の機器のバッテリーの残量に関する情報とを比較し、前記バッテリー残量確認部で確認したバッテリーの残量が前記他の機器のバッテリーの残量よりも少ない場合、前記通信部は前記他の機器へ電気を要求するメッセージを送信することを特徴とする映像機器。     The video equipment according to claim 1,
    A battery remaining amount confirmation unit for confirming the remaining amount of the battery;
    The remaining battery level confirmed by the remaining battery level confirmation unit is compared with the remaining battery level information of the other device received by the communication unit, and the remaining battery level confirmed by the remaining battery level confirmation unit. Is less than the remaining battery level of the other device, the communication unit transmits a message requesting electricity to the other device.
  4. 　請求項１の映像機器であって、
    　前記バッテリーの残量を確認するバッテリー残量確認部を有し、
    　前記バッテリー残量確認部で確認したバッテリーの残量に基づいて前記映像機器の残り稼動時間を算出し、当該算出した前記映像機器の残り稼動時間と前記通信部で受信する前記他の機器の残り稼動時間とを比較し、当該比較の結果を前記通信部を介して前記他の機器へ伝えることを特徴とする映像機器。     The video equipment according to claim 1,
    A battery remaining amount confirmation unit for confirming the remaining amount of the battery;
    The remaining operation time of the video device is calculated based on the remaining battery amount confirmed by the battery remaining amount confirmation unit, and the calculated remaining operation time of the video device and the remaining device remaining received by the communication unit A video device characterized in that the operation time is compared and the result of the comparison is transmitted to the other device via the communication unit.
  5. 　請求項１の映像機器であって、
    　前記バッテリーの残量を確認するバッテリー残量確認部を有し、
    　前記バッテリー残量確認部で確認したバッテリーの残量に基づいて前記映像機器の残り稼動時間を算出し、当該算出した前記映像機器の残り稼動時間と前記通信部で受信する前記他の機器の残り稼動時間とを比較し、前記映像機器の残り稼動時間が前記他の機器の残り稼動時間よりも少ない場合、前記通信部は前記他の機器へ電気を要求するメッセージを送信することを特徴とする映像機器。     The video equipment according to claim 1,
    A battery remaining amount confirmation unit for confirming the remaining amount of the battery;
    The remaining operation time of the video device is calculated based on the remaining battery amount confirmed by the battery remaining amount confirmation unit, and the calculated remaining operation time of the video device and the remaining device remaining received by the communication unit When the remaining operating time of the video device is shorter than the remaining operating time of the other device, the communication unit transmits a message requesting electricity to the other device. Video equipment.
  6. 　接続された第１の機器と第２の機器との間で電気の供給を行う電気供給方法であって、
    　前記第１の機器から前記第２の機器へバッテリーの残量に関する情報を要求するメッセージを送信するステップと、
    　前記第２の機器から前記第１の機器へバッテリーの残量に関する情報を送信するステップと、
    　前記第１の機器のバッテリーの残量と前記第２の機器のバッテリーの残量とを比較するステップと、
    　前記第１の機器のバッテリーの残量と前記第２の機器のバッテリーの残量との比較結果を前記第１の機器から前記第２の機器へ送信するステップと、
    　前記比較結果に基づいて前記第１の機器と前記第２の機器との間で電気の供給を開始するステップと、を有することを特徴とする電気供給方法。     An electricity supply method for supplying electricity between a connected first device and a second device,
    Transmitting a message requesting information on a remaining battery level from the first device to the second device;
    Transmitting information about the remaining amount of battery from the second device to the first device;
    Comparing the remaining battery level of the first device with the remaining battery level of the second device;
    Transmitting a comparison result between the remaining battery level of the first device and the remaining battery level of the second device from the first device to the second device;
    And a step of starting supply of electricity between the first device and the second device based on the comparison result.
  7. 　請求項６の電気供給方法であって、
    　バッテリー残量の多い機器からバッテリー残量の少ない機器へ電気を供給することを特徴とする電気供給方法。     The electricity supply method according to claim 6, comprising:
    An electricity supply method characterized in that electricity is supplied from a device having a large remaining battery capacity to a device having a small remaining battery capacity.
  8. 　接続された第１の機器と第２の機器との間で電気の供給を行う電気供給方法であって、
    　前記第１の機器の残り稼働時間を算出するステップと、
    　前記第１の機器から前記第２の機器へ残り稼働時間に関する情報を要求するメッセージを送信するステップと、
    　前記第２の機器から前記第１の機器へ残り稼働時間に関する情報を送信するステップと、
    　前記第１の機器の残り稼働時間と前記第２の機器の残り稼働時間とを比較するステップと、
    　前記第１の機器の残り稼働時間と前記第２の機器の残り稼働時間との比較結果を前記第１の機器から前記第２の機器へ送信するステップと、
    　前記比較結果に基づいて前記第１の機器と前記第２の機器との間で電気の供給を開始するステップと、を有することを特徴とする電気供給方法。     An electricity supply method for supplying electricity between a connected first device and a second device,
    Calculating a remaining operating time of the first device;
    Sending a message requesting information about remaining operating time from the first device to the second device;
    Transmitting information on remaining operating time from the second device to the first device;
    Comparing the remaining operating time of the first device with the remaining operating time of the second device;
    Transmitting a comparison result between the remaining operation time of the first device and the remaining operation time of the second device from the first device to the second device;
    And a step of starting supply of electricity between the first device and the second device based on the comparison result.
  9. 　請求項８の電気供給方法であって、
    　残り稼働時間の多い機器から残り稼働時間の少ない機器へ電気を供給することを特徴とする電気供給方法。     The electricity supply method according to claim 8, comprising:
    An electricity supply method comprising supplying electricity from a device having a long remaining operation time to a device having a short remaining operation time.
PCT/JP2012/077028 2012-10-19 2012-10-19 Video device and electricity supply method WO2014061145A1 (en)

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