WO2005094078A1 - 動画像再生装置 - Google Patents
動画像再生装置 Download PDFInfo
- Publication number
- WO2005094078A1 WO2005094078A1 PCT/JP2005/005186 JP2005005186W WO2005094078A1 WO 2005094078 A1 WO2005094078 A1 WO 2005094078A1 JP 2005005186 W JP2005005186 W JP 2005005186W WO 2005094078 A1 WO2005094078 A1 WO 2005094078A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- moving image
- unit
- input
- reproduction
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
- H04N5/783—Adaptations for reproducing at a rate different from the recording rate
Definitions
- the present invention relates to a moving picture reproducing apparatus for reproducing moving picture data received from a network.
- an inter-frame predictive encoding method is generally used for compressing a data amount.
- the MPEG2 system ISO / IEC 13818-2
- ISO / SC29 / WG11 the MPEG2 system (ISO / IEC 13818-2) standardized by ISO / SC29 / WG11 is known.
- an independent frame corresponding to an MPEG2 I-frame
- a non-independent frame that requires information of another frame at the time of decoding
- a method of creating and storing moving image data dedicated to fast-forward playback and moving image data dedicated to rewind playback in a moving image data distribution server has a problem that the storage capacity required for the server increases. .
- a terminal device for receiving and transmitting moving image data distributed via a network reduces processing capacity and storage capacity required for fast-forwarding and rewinding playback of the moving image data.
- Another object of the present invention is to realize fast-forward and rewind playback at a constant interval independent of independent frames.
- the present invention is characterized in that an input moving image is down-encoded to create a rewind reproduction image in accordance with the storage capacity of a storage device of the terminal.
- the input moving image is down-decoded and fast-forward playback is performed.
- down-encoding or down-decoding refers to encoding / decoding using only a part of parameters to be used in original encoding / decoding.
- encoding / decoding with reduced spatial or temporal resolution encoding / decoding only the luminance component, encoding only a part of the image, Z-decoding, or encoding a part of the frequency components used in encoding / decoding.
- encoding / decoding with a reduced spatial resolution means, for example, encoding and decoding with a reduced number of spatial pixels (sequence is to change 1280x960 to 640x480; / 8, 2/8, 3/8 ... etc.
- encoding / decoding with lower time resolution means for example, encoding Z to reduce the number of frames to be decoded.
- encoding Z to reduce the number of frames to be decoded.
- changing the "frame display interval" to one out of ten can be considered.
- the frame to be displayed may be determined based on the display interval of the frame after the normal decoding process.
- down-encoding Z-down decoding may be realized by a combination of two or more of these.
- the processing load in fast-forward playback is reduced by down-decoding, and the storage capacity and processing load of video data for rewind playback are reduced by down-encoding. Also, by using the same parameters for down-decoding and down-encoding, it is possible to realize moving picture playback at equal intervals in fast-forward and rewind.
- a selector is provided for changing an input source and an output destination of the moving image data in accordance with a reproduction mode (reproduction, fast forward, rewind) of the moving image.
- a reproduction mode production, fast forward, rewind
- an image obtained by decoding the input moving image is provided.
- fast-forward playback an input video was down-decoded
- rewind playback an input video was down-encoded and then decoded.
- down-encoding / down-decoding is performed with a reduced spatial resolution will be described as an example, but the down-encoding / down-decoding method can be appropriately selected.
- FIG. 1 is a functional block diagram of the first embodiment.
- the moving image reproducing apparatus 103 is a streaming reproducing terminal that receives moving image data distributed by the moving image distribution server 101 via the network 102, performs decoding processing in real time, and displays the decoded data on the moving image display unit 104.
- a moving picture encoding method in the distribution of moving picture data includes an MPEG method which is an inter-frame predictive encoding method for compressing the data amount, an H.264 equivalent strength S, and a basic frame and the basic frame. It is applicable as long as it is a code encoding method that is encoded with a reference frame generated by reference.
- Examples of the moving image reproducing device 103 include a set-top box, a portable information terminal represented by a PDA (Personal Digital Assistant), a mobile phone, and an Internet TV.
- Examples of the moving image display unit 104 include a television receiver, a liquid crystal display, a plasma display, and a projector. Note that the video playback device and the video display unit are configured as a single housing even if they are configured as separate housings. May be. In the case of separate housings, the housings can be connected wirelessly or by wire.
- the network 102 is a communication network capable of performing data communication between connected devices.
- the network 102 is a network that performs communication by IP (Internet Protocol) represented by the Internet.
- IP Internet Protocol
- the moving image distribution server 101 is a device such as a home gateway or a set-top box, and the moving image reproducing device 103 receives the content from the home gateway or the like via a wired or wireless network 102. This configuration is also within the range assumed in this embodiment.
- the moving image reproducing apparatus 103 has a network
- the moving image data is received from the moving image distribution server 102 and the control protocol communication with the moving image distribution server 101 is performed.
- the selector 112 selects an input from either the network control unit 111 or the moving image data storage unit 116 and outputs the selected input to either the down decoding unit 113 or the decoding unit 114. Switching of the input / output of the selector 112 is performed by the reproduction control unit 121.
- FIG. 10 shows the internal configuration of selector 112.
- the input switching unit 1001 outputs only one of the input from the network control unit 111 and the input from the moving image data storage unit 116.
- the output switching unit 1002 outputs the input from the input switching unit 1001 to only one of the down decoding unit 113 and the decoding unit 114. Selection of input by the input switching unit 1001 and selection of output by the output switching unit 1002 are performed based on input / output switching from the reproduction control unit 121.
- the input switching unit 1001 selects the input from the network control unit 111, and the output switching unit 1002 switches the input and output so that the data is output to the decoding unit 114.
- the input switching unit 1001 selects an input from the network control unit 111, and the output switching unit 1002 switches input and output so that data is output to the down-decoding unit 113.
- the image down-decoded by the down-decoding unit is input to and encoded by an encoding unit (not shown), and the moving image encoded by the encoding unit is stored in the moving image data storage unit 116, and is rewound and reproduced. It can be used as an image for Alternatively, the output destination is set to both the down-decoding unit and the decoding unit, and the decoding unit
- the output image may be input to the down-encoding unit, and the down-encoded image may be used as the rewind image.
- the encoding unit can be replaced with the down encoding unit by appropriately changing the rate input to the down encoding unit.
- the input switching unit 1001 selects an input from the moving image data storage unit 116, and the output switching unit 1002 switches input and output so that data is output to the decoding unit 114.
- the playback control unit 121 is connected to the moving image data storage unit 116 via a signal line, and can transmit an instruction such as a rewind start position and a rewind speed via the signal line. .
- rewinding is instructed during normal playback (or fast forward playback), rewinding is performed in the order of the latest moving image data recorded in the moving image storage means when the rewinding instruction is issued.
- the start position of the rewind image is the latest moving image data stored in the moving image storage unit.
- the rewind speed is, for example, when the playback control unit is instructed via the user interface to rewind at the double speed, the display interval of the moving image stored in the moving image storage unit at the same frame rate is set. If the ratio is 1/2, rewinding at 2x speed is possible.
- the down-decoding unit 113 down-decodes the input moving image data by reducing it to an image size based on the rate specification from the reproduction control unit 121.
- the decoding unit 114 decodes the input moving image data with an image size equal to that of the distributed moving image data.
- the outputs of the down-decoding unit 113 and the decoding unit 114 are displayed on the moving image display unit 104 via the display interval adjusting unit 117.
- the output is also sent to the down-encoding unit 115.
- the down-encoding unit 115 down-encodes the input moving image at a frame display interval and an image size based on the rate specification from the reproduction control unit 121, and stores the down-encoding in the moving image data storage unit 116.
- the display interval of frames is set to the ratio of 1 frame to 10 frames, and the image size is 1Z8, 2/8, 3/8 times, etc. of the original image. Since the stored moving image data is used for rewind reproduction, it is necessary to encode each frame in a format that does not require information of other frames. In this embodiment, for example, all frames are down-encoded in an independent frame format.
- the display interval adjustment unit 117 adjusts the display interval of the moving image to the frame display interval based on the rate specification of the reproduction control unit 121.
- the user interface 141 is a unit that receives a reproduction, fast-forward, and rewind instruction from the user and sends a reproduction mode selection signal to the reproduction control unit. Specific examples include buttons on a remote control, a keyboard, and a mobile phone.
- Each functional block 111-141 of the moving picture reproducing apparatus 103 shown in Fig. 1 can be implemented by software, hardware, or a combination of both.
- the present embodiment is also applicable to the present embodiment.
- the function block can be configured on one chip.
- the function block mounted on the chip and the function block arranged outside the chip can be appropriately selected.
- a network control unit is arranged outside the chip, and other function blocks are arranged on the chip.
- an interface such as a moving image input unit is provided on the chip.
- FIG. 11 shows a configuration in which each functional block of the moving image reproducing apparatus 103 is realized by software.
- the moving image reproducing apparatus 103 is configured by connecting a network interface 1101, a CPU 1102, a user interface 141, a memory 1104, a moving image interface 1105, and an audio interface 1106 to a bus 1103.
- the functions of the functional blocks 111 to 141 are realized by controlling the network interface 1101, the user interface 141, the moving image interface 1105, and the audio interface 1106 in accordance with the program in the CPU 1102 S memory 1104.
- the moving image data storage unit 116 is realized by controlling the moving image data storage area 1106 of the memory 1104 by the CPU 1102.
- the power S shows an example realized by a single processor, and it may be mounted as a coprocessor such as a general-purpose CPU.
- the parameters for specifying the image size and the frame display interval in decoding are changed for a single hardware or a single software. If the functions described above are realized, a method of realizing them is also possible.
- the moving image reproducing apparatus 103 determines the frame display interval and the image size in the fast forward and rewind reproduction at the time of starting the reproduction of the moving image.
- Fig. 2 shows this embodiment. 1 shows an example of a communication sequence when starting reproduction of a moving image between the moving image reproducing apparatus 103 and the moving image distribution server 101 by the above method.
- the moving picture reproducing apparatus 103 of this embodiment uses RTSP (Real Time Streaming Protocol) standardized by the IETF (Internet Engineering Task Force) for communication of control information, and receives moving picture data.
- RTSP Real Time Streaming Protocol
- IETF Internet Engineering Task Force
- the moving picture reproducing apparatus 103 first transmits an information acquisition request (DESCRIBE method in RTS P) 201 to the moving picture distribution server 101.
- the response 202 from the moving image distribution server 101 includes the length (reproduction time) of moving image data corresponding to the URI (Universal Resource Identifier) specified in the information acquisition request 201, and the average bit rate. .
- the average bit rate is a result of dividing the size of the moving image data by the reproduction time of the moving image data, and represents on average how many bits of data are transmitted from the moving image distribution server 101 per second.
- a distribution preparation request (SETUP method in RTSP) 203 is transmitted, and a distribution request (PLAY method in RTSP) 204 is transmitted.
- a reproduction speed (a multiple of the original average bit rate of the moving image data at which the data is distributed) and a reproduction start position (expressed by an elapsed time from the beginning of the moving image data) are specified. .
- the playback speed is specified as 1x
- the playback start position is specified as 0 seconds.
- distribution 211 of moving image data by RTP is started. These protocol processes are performed by the network control unit 111. The communication sequence between the moving image reproducing apparatus 103 and the moving image distribution server 101 at the start of moving image reproduction has been described above.
- FIG. 3 shows a processing flow in the reproduction control unit 121 when starting reproduction of a moving image.
- the reproduction control unit 121 instructs the network control unit 111 to start normal reproduction (301).
- the network control unit 111 executes the communication sequence shown in FIG. 2, acquires the length (reproduction time) and average bit rate of the moving image data included in the response 202 to the information acquisition request 201, and notifies the reproduction control unit 121. (302).
- the reproduction control unit 121 can record an image at regular intervals over the entire moving image based on the length of the moving image data, the average bit rate, and the storage capacity of the moving image data storage unit 106.
- the size and the frame display interval are determined (303). It is assumed that the response 202 includes the length T (unit: second) of the moving image data and the average bit rate B (unit: kbps).
- FIG. 4 shows an example of a calculation flow of the image size and the frame display interval when the storage capacity of the data storage unit 106 is M (unit: kilobit). In the present embodiment, M is assumed to be a fixed value, but M may be obtained by calculating the capacity of an unused storage area of the moving image data storage unit 106 at the start of moving image reproduction.
- the default value of k in fast-forward and rewind is assumed to be determined in advance, and is set to 0.1 in this embodiment (401).
- the total amount of moving image data is obtained by multiplying the reproduction time T of the moving image by the average bit rate B (T X B).
- R which is obtained by multiplying the product by the coefficient k described above, is a storage capacity necessary for storing moving images at a rate of one frame per 10 frames. (402).
- moving image data to be recorded is reduced to a size M or less by reducing the size of the image to be recorded.
- M / R is 1/64 or more (403) and MZR is larger than 1, that is, if the storage capacity M of the moving image storage unit 116 is larger than SR (404), the image size is reduced.
- n that satisfies the condition shown in the processing step 405 is the maximum n for recording moving image data within the storage capacity M.
- k representing the display interval of a moving image as a ratio to the frame rate of the original moving image
- n representing the image size as a ratio to the vertical and horizontal 1/8 size of the original moving image.
- the moving image data storage unit 116 is initialized, so that no image data is stored therein (304). The above is the reproduction start processing flow.
- the feature of the moving picture reproducing apparatus 103 is that the moving picture output to the moving picture display unit 104 is output to the down decoding unit 113 in accordance with different playback modes such as normal playback, fast forward, and rewind.
- the point is that the output of the decoding unit 114 and the output of the down-encoding unit 116 stored in the moving image storage unit 116 are switched to three types of output results decoded by the decoding unit 114.
- the moving image reproducing apparatus 103 uses the moving image data received by the network control unit 111 as an input, and sends the output of the decoding unit 114 to the moving image display unit 104.
- FIG. 5 shows an operation flow of the reproduction control unit 121 in this case.
- the reproduction control unit 121 instructed to perform normal reproduction from the user interface 141 instructs the network control unit 111 to pause if any moving image is currently being reproduced. If the moving image data is currently being received from the moving image distribution server 101, the network control unit 111 transmits a temporary stop request (PAUSE method) to the moving image distribution server 101. Next, if the down-decoding unit 113 or the decoding unit 114 is executing the decoding of the moving image data, the decoding is stopped (502).
- PAUSE method temporary stop request
- the input uses the data sent from the moving image distribution server 101 and decodes and displays the data by the decoding unit 114. Therefore, the input of the selector 112 is input to the network control unit 111, and the output is output. Switching to the decoding unit 114 (503).
- the frame display interval and the image size determined in the flow of FIG. 4 are set (505).
- the reproduction control unit 121 instructs the network control unit 111 to start normal reproduction (507).
- the network control unit 111 transmits a distribution request (PLAY method) 204 to the moving image distribution server 101, and transmission 211 of moving image data from the moving image distribution server 101 is started.
- the decoding unit 114 The decoding process is started (507), and normal reproduction of the moving image is performed.
- the down-encoding unit 115 down-encodes the moving image in accordance with the set frame display interval and image size, and records the down-encoded image in the moving image data storage unit 116.
- By down-encoding the storage capacity for storing moving images is reduced, and the encoding process itself can be performed at high speed. All moving images to be stored are down-encoded as independent frames.
- the input uses moving image data sent from the moving image distribution server 101 at a higher speed than usual, and it is down-decoded by the down-decode unit 113 and displayed. Is switched to the network control unit 111 and the output to the down-decode unit 113 (603).
- the reproduction control unit 121 sets the value of n determined in the flow of FIG. 4 to the down-decoding unit 113 at the start of the reproduction of the moving image (604).
- the rate specification for the down-encoding unit 115 in the case of the fast-forward playback is the same as the value (k) in the normal playback for the frame display interval.
- the setting of the image size (n) is different.
- the playback control unit 121 sets the value of k determined in the flow of FIG. 4 as the frame display interval at the start of the playback of the moving image (606).
- the network control unit 111 specifies a playback speed higher than normal (for example, in this embodiment, the speed parameter in the RTSP described above is set to A transmission request (PLAY method) 204 specified in (5) is transmitted to the moving image distribution server 101. Since the moving image distribution server 101 performs higher-speed distribution than usual, the down-decoding unit 113 starts down-decoding (608), and fast-forward reproduction starts. Done. At the same time, the down-encoding unit 115 down-encodes the moving image according to the set frame display interval and the image size (as it is the input image size), and records it in the moving image data storage unit 116.
- a playback speed higher than normal for example, in this embodiment, the speed parameter in the RTSP described above is set to A transmission request (PLAY method) 204 specified in (5) is transmitted to the moving image distribution server 101. Since the moving image distribution server 101 performs higher-speed distribution than usual, the down-decoding unit 113 starts down-decoding (608), and fast-forward reproduction starts. Done.
- the input uses the moving image data recorded in the moving image data storage unit 116, and the decoded data is decoded and displayed by the decoding unit 114. Therefore, the input of the selector 112 is input to the moving image data storage unit 116. The output is switched to the decoding unit 114 (703).
- the moving image data that has already been reproduced and fast-forward reproduced is down-encoded and recorded in the moving image data storage unit 116. Since the frame display interval and image size are adjusted at the time of down-encoding, the recorded moving image data is directly decoded in reverse order, and when all images are displayed, rewind playback is performed.
- the down-encoding unit 115 is stopped (705).
- Delivery from the moving image delivery server 101 is not required for rewind playback.
- the rewind image stored in the moving image data storage unit is set to be deleted after watching the streaming data (after receiving the end of stream signal from the content distribution server) or when reproducing another content. It is possible.
- the moving image reproducing apparatus 103 has the effect of reducing the processing load of fast-forward or rewind reproduction by performing down-encoding or down-decoding and the data amount thereof.
- the configuration of the present embodiment makes it possible to view streaming content without requiring a large-capacity storage device. Is applicable and has an effect of improving durability.
- the processing load and storage capacity can be reduced.
- the display frequency of the image is higher and the frame display interval is constant, so that fast forward and rewind reproduction can be realized.
- the number of independent frames is very small (for example, if the number of independent frames is one in 200 frames out of 30 frames of moving image data per second, all the frames constituting the moving image
- the original image obtained by decoding the received moving image is down-encoded at a predetermined frame display interval and stored in the storage unit 116 for storage. Therefore, even when rewind playback is performed, it is possible to refer to a moving image at the frame display interval.
- the configuration of the functional blocks and the processing flow are basically the same as those of the first embodiment.
- the capacity M of the moving image data storage unit 116 is reduced. If the moving image data cannot be recorded within the time limit (corresponding to the processing 414 and 415), the moving image distribution server 101 receives only the data in the independent frame format and reproduces the data instead of the fast forward and rewind reproduction according to the present embodiment. The feature is that it is judged that the quality of fast forward and rewind reproduction is higher.
- the frame display interval becomes larger than a predetermined amount ( For example, if the display interval of the rewind image is 30 frames per second and the display interval of the rewind image is 1 frame for every 200 frames or more), only the data in the independent frame format is delivered, and fast forward and rewind are performed. Playback is judged to be higher quality
- a message notifying the user that the moving image quality of the fast-forward and rewind reproduction is degraded may be displayed on the moving image display unit 104.
- fast forward, rewind Fast reproduction and rewinding are realized by reproducing only the data in the independent frame format distributed from the moving image distribution server 101 without performing down decoding and down encoding processing during reproduction.
- the process 603 becomes the process 503 (FIG. 5)
- the process 604 becomes unnecessary
- the process 605 becomes the process 705 (FIG. 7)
- the process 606 becomes the process 506. (Fig. 5).
- the fast forward playback mode for only the independent frame is instructed to the network control unit 111.
- the network control unit 111 requests high-speed distribution of only the independent frame by a distribution request (PLAY method) to the moving image distribution server 101.
- Processing 608 is processing 508 (FIG. 5).
- the process 703 becomes the process 503, and between the process 506 and the process 508, the network control unit 111 reproduces only the independent frame at a high speed in the reverse direction.
- a processing step for specifying a mode is added.
- the network control unit 111 requests high-speed distribution in the reverse direction only for the independent frame by a distribution request (PLAY method) to the moving image distribution server 101.
- PLAY method distribution request
- the quality of the moving image data created by the down-encoding is lower than that of the display of the independent frame alone due to the limitation of the storage capacity of the moving image data storage unit 116, it is possible to use all over again.
- the fast forward and rewind playback of only the independent frame by notifying the user, it is possible to achieve the best fast forward and rewind playback quality under given conditions.
- FIG. 8 shows a functional block diagram of a moving image reproducing apparatus 103 according to the third embodiment.
- the index storage unit 131 is added, which has a feature.
- the index in the present embodiment is information indicating how many seconds have elapsed since the beginning of the moving image the image displayed on the moving image display unit 104 during fast-forward or rewind playback. is there
- the index image 902 which displays the index image 902 (Fig. 9) is the image 901 displayed on the moving image display unit 104 at a fixed interval in the display area of the moving image display unit 104 during fast forward and rewind playback.
- the display interval adjusting unit 117 controlling the display position of the reproduced image 901 at a constant interval.
- the time interval in which the reproduced image 901 is left as the index image 902 is set in advance. For example, in the present embodiment, the time interval is set to 1Z8 of the frame display interval k set in the display interval adjusting unit 117.
- the frame actually displayed on the moving image display unit 104 remains in the display area of the moving image display unit 104 as an index image 902 once every eight times.
- an index image 902 As a method of selecting the index image 902 to be left in the display area, other methods such as, for example, setting a frame in which a scene change is detected as the index image 902 are possible.
- the display area is used, and after cutting, the old image, the new index image 902, and the index image 902 are used. Will be overwritten.
- the display order of the index images 902 is chronologically from left to right, and when displayed to the right end of the screen, the display is shifted downward from left to right again toward an empty display area.
- the playback image 901 itself plays the time series in the reverse direction, the index image 902 is displayed from the lower right to the upper left, for example. There is.
- the display interval adjustment unit 117 When leaving the playback image 901 as the index image 902 in the moving image display unit 104, the display interval adjustment unit 117 stores the index of the playback image 901, that is, the elapsed time from the beginning of the moving image in the index storage unit 131. I do.
- the index storage unit 131 stores an index corresponding to each index image 902 currently displayed on the moving image display unit 104.
- the reproduction position is shifted by the index image 902. Movement is possible.
- processing according to the normal reproduction flow of FIG. 5 is started.
- an index corresponding to the index image 902 specified by the user and recorded in the index storage unit 131 is given as a parameter to the instruction given to the network control unit 111.
- the network control unit 111 specifies the index passed as a parameter as the reproduction start position in the distribution request (PLAY method) 204 to be transmitted to the moving image distribution server 101. Since the moving image distribution server 101 distributes the moving image data from the specified reproduction start position, the normal reproduction is started from the reproduction position corresponding to the index image 902 specified by the user.
- the index image 902 is displayed in the empty display area of the moving image display unit 104 caused by making the image size of fast-forward and rewind playback smaller than the image size of normal playback. This has the effect that the user can more accurately specify the reproduction start position.
- FIG. 12 shows a functional block diagram of a moving image reproducing apparatus 103 according to the fourth embodiment.
- streaming data distributed from the moving image distribution server 101 is not reproduced in real time, but is temporarily stored in a download file storage unit 1201 which is a storage area in the storage device 1202, and is temporarily stored in the download file storage unit 1201. It is a terminal that reproduces the data in the as a moving image.
- a storage area of the storage area of the storage device 1202 that is not used for storing the download file is used as the moving image data storage unit 116.
- the storage capacity that can be used as the moving image data storage unit 116 varies depending on the size of the download file.
- the rate designation is calculated with the capacity of the storage area excluding the area occupied by the download file in the storage device 1202 as M. , Within the available storage capacity. It is possible to generate a flip-back image.
- FIG. 1 is a functional block diagram of a moving image reproducing apparatus according to a first embodiment.
- FIG. 2 is a communication sequence diagram between a moving image reproducing apparatus and a moving image distribution server.
- FIG. 3 is a flowchart of a moving image reproduction preparation process of a reproduction control unit.
- FIG. 4 is a flowchart of a parameter calculation process.
- FIG. 5 is a flowchart of a normal reproduction process of a reproduction control unit.
- FIG. 6 is a flowchart of a fast-forward playback process performed by a playback control unit.
- FIG. 7 is a flowchart of a rewind reproduction process of a reproduction control unit.
- FIG. 8 is a functional block diagram of a moving image reproducing device according to a third embodiment.
- FIG. 9 is a screen configuration example of an index image display.
- FIG. 10 is an internal block diagram of a selector.
- FIG. 11 is a functional block diagram in a case where the moving image reproducing apparatus is realized by software.
- FIG. 12 is a functional block diagram c of a moving image reproducing apparatus according to a fourth embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-088300 | 2004-03-25 | ||
JP2004088300A JP2005277803A (ja) | 2004-03-25 | 2004-03-25 | 動画像再生装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005094078A1 true WO2005094078A1 (ja) | 2005-10-06 |
Family
ID=35056563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005186 WO2005094078A1 (ja) | 2004-03-25 | 2005-03-23 | 動画像再生装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2005277803A (ja) |
WO (1) | WO2005094078A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5257367B2 (ja) * | 2008-02-20 | 2013-08-07 | 日本電気株式会社 | 映像配信装置、映像配信システム及び映像配信方法 |
JP5713585B2 (ja) * | 2010-06-17 | 2015-05-07 | 三菱電機株式会社 | コンテンツ再生装置及びコンテンツ再生方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0702493A1 (en) * | 1994-09-19 | 1996-03-20 | International Business Machines Corporation | Interactive playout of videos |
JPH09307873A (ja) * | 1996-05-09 | 1997-11-28 | Nec Corp | 画像データの特殊再生システム |
JP2000299841A (ja) * | 1998-11-13 | 2000-10-24 | Seiko Epson Corp | 画像処理装置および画像処理方法ならびに情報記録媒体 |
WO2003003731A2 (en) * | 2001-06-29 | 2003-01-09 | International Business Machines Corporation | Efficient transmission and playback of digital information |
JP2003304502A (ja) * | 2002-04-08 | 2003-10-24 | Matsushita Electric Ind Co Ltd | 特殊再生装置及び特殊再生方法 |
JP2004159034A (ja) * | 2002-11-06 | 2004-06-03 | Hitachi Ltd | 映像再生装置及びそのプログラム |
-
2004
- 2004-03-25 JP JP2004088300A patent/JP2005277803A/ja active Pending
-
2005
- 2005-03-23 WO PCT/JP2005/005186 patent/WO2005094078A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0702493A1 (en) * | 1994-09-19 | 1996-03-20 | International Business Machines Corporation | Interactive playout of videos |
JPH09307873A (ja) * | 1996-05-09 | 1997-11-28 | Nec Corp | 画像データの特殊再生システム |
JP2000299841A (ja) * | 1998-11-13 | 2000-10-24 | Seiko Epson Corp | 画像処理装置および画像処理方法ならびに情報記録媒体 |
WO2003003731A2 (en) * | 2001-06-29 | 2003-01-09 | International Business Machines Corporation | Efficient transmission and playback of digital information |
JP2003304502A (ja) * | 2002-04-08 | 2003-10-24 | Matsushita Electric Ind Co Ltd | 特殊再生装置及び特殊再生方法 |
JP2004159034A (ja) * | 2002-11-06 | 2004-06-03 | Hitachi Ltd | 映像再生装置及びそのプログラム |
Also Published As
Publication number | Publication date |
---|---|
JP2005277803A (ja) | 2005-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9148696B2 (en) | Data transmission system, receiving apparatus, and receiving method as well as sending apparatus and sending method | |
EP1338131B1 (en) | Transmitting and receiving real-time data | |
US7003794B2 (en) | Multicasting transmission of multimedia information | |
KR101019634B1 (ko) | 미디어 전송 시스템 및 방법 | |
JP4153995B2 (ja) | 画像復号化符号化装置、画像符号化装置及び画像復号化装置 | |
JP4066852B2 (ja) | ビデオ符号化方式変換装置、変換方法、およびこれを用いたビデオ記録再生装置 | |
JP4695669B2 (ja) | 映像配信システム | |
US20060023729A1 (en) | Apparatus and method for adaptively controlling buffering amount according to content attribute in receiving audio-video data | |
JP5592716B2 (ja) | 映像送信装置 | |
JP2001204001A (ja) | 動画像配信システム,再生端末装置,及び配信装置 | |
CN110956683A (zh) | 信息处理***、终端装置及计算机可读介质 | |
JP4148673B2 (ja) | 映像配信システム | |
JP2002290974A (ja) | 伝送レート制御方法 | |
JP4526294B2 (ja) | ストリームデータ送信装置、受信装置、プログラムを記録した記録媒体、およびシステム | |
JP4567646B2 (ja) | 動画像・音声再生携帯端末、及び、動画像・音声配信端末、及び、システム | |
JP2008109434A (ja) | ストリームデータ再生システム、ストリームデータ再生システム用送信装置、ストリームデータ再生システム用受信装置及びストリームデータ再生システム用プログラム | |
US7558323B2 (en) | Video data transmission method for changing transmission data amounts in accordance with a transmission speed and a transmission system therefor | |
WO2005094078A1 (ja) | 動画像再生装置 | |
CN116962613A (zh) | 数据传输方法及装置、计算机设备、存储介质 | |
JP2004158929A (ja) | 動画像処理方法および動画像処理装置ならびに動画像伝送装置 | |
EP3687176A1 (en) | A client and a method for managing, at the client, a streaming session of a multimedia content | |
JP4237129B2 (ja) | ネットワーク対応映像機器及びネットワーク対応映像システム | |
JP2003235041A (ja) | リアルタイム画像符号化装置 | |
JP2001346207A (ja) | 画像情報変換装置及び方法 | |
JPH10117346A (ja) | 情報供給装置、情報再生装置及び情報供給再生システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |