US20100195983A1 - Video data reproducing apparatus, video data generating apparatus and recording medium - Google Patents
Video data reproducing apparatus, video data generating apparatus and recording medium Download PDFInfo
- Publication number
- US20100195983A1 US20100195983A1 US12/798,175 US79817510A US2010195983A1 US 20100195983 A1 US20100195983 A1 US 20100195983A1 US 79817510 A US79817510 A US 79817510A US 2010195983 A1 US2010195983 A1 US 2010195983A1
- Authority
- US
- United States
- Prior art keywords
- video
- playback
- data
- picture
- video data
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/005—Reproducing at a different information rate from the information rate of recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Studio Circuits (AREA)
Abstract
To provide a video data reproducing apparatus or the like, which includes: a flag reader 101 for reading out a flag that designates a playback style during special playback, from video data; decoders 102 and 103 for decoding two sets of video data; a synthesizer 106 for combining the decoded videos to output the result; and a manager 109 for controlling the operations of decoders 102, 103 and synthesizer 106 in accordance with the flag value, and which manages the playback style in the special playback during picture-in-picture playing in accordance with the flag value, to thereby realize the playback style of the picture-in-picture video during the special playback that reflects the distributor's intention.
Description
- The present invention relates to a video data reproducing apparatus which receives plural sets of video data and outputs a playback video formed by combining a plurality of decoded videos that are acquired by decoding the plural sets of video data, as well as relating to a video data generating apparatus for video data which will be used to output a playback video by combining a plurality of decoded videos that are acquired from the plural sets of video data.
- With the development of high-speed network infrastructure and with the development of large capacity recording media, the absolute quantity of video data that can be handed at a time by the user or by user video equipment has markedly increased. With this trend, various functions that are achieved using a plurality of sets of video data and high-performance applications based on such functions have been emerging. As one of such functions, there is a function called picture in picture. “Picture in picture” is a function for displaying two images at the same time by superimposing a small child frame over the screen (parent frame). This function is used for, for example “multi-angle representation” for displaying a video taken from a different angle of view from that of the video for the parent frame or for “commentary display” for displaying additional information in a commentary style as to the video of the parent frame (for example, displaying a director's commentary video or the like for recording untold stories during shooting the video.
- This picture-in-picture function is realized for example by a process made up of decoding two sets of video data over two different layers and superimposing these decoded videos, as shown in
FIG. 17 . - Further,
FIG. 18 shows different display styles of a video in the child frame in picture-in-picture functionality; the child frame may be arectangular video 1801 or may be avideo 1802 having an arbitrary shape. The picture-in-picture function and the method of realizing it are described in forexample patent document 1 and others. - Patent document 1:
- Japanese Patent Application Laid-open 2005-123775
- In picture in picture, two videos are reproduced and displayed at the same time. For this reason, when for example a special playback such as high-speed playback etc. of the picture in the parent frame is directed during picture-in-picture representation, conventionally there has been no limitation imposed on whether the video in the child frame should be played in the special playback mode following the video of the parent frame or no special play is done; that is, this depended on the existing configuration of the individual player. Accordingly, it was impossible on the video distributor side to limit the operation during the special playback. Here, the special playback refers to video playback modes different from the normal playback mode, including slow-motion playback, frame-by-frame playback, reverse playback in addition to video playback at high speeds such as double-speed playback, four-speed playback etc.
-
FIG. 19 shows three typical routes (broadcasting, communication (network) and package distribution) when video content is distributed from a distributor to a consumer. As complex distributing methods, there is a practice that the basic part is sent by broadcasting or package distribution while additional part is sent by communication (network). When a video including picture in picture is distributed from a distributor to consumers in the above way, in some utility (applications) there are cases where the video distributor's side wants to designate their own way of reproduction during the special playback in picture in picture. - As an example, when a video displayed in the child frame is given as a privilege video, there is a request for viewers to set up such a condition that the video should be viewed to the end without using high-speed playback. On the contrary, in the existing picture in picture, the playback style during the special playback depends on the player side as mentioned above, hence there has been no way to realize such demands from the distributor's side.
- The present invention has been devised in view of the above problem, it is therefore an object to provide a video data reproducing apparatus and video data generating apparatus and the like, which makes it possible to realize a playback style that reflects the distributor's intention for the way of reproduction during the special playback of a picture-in-picture video.
- In order to solve the above problems, the first invention is a video data reproducing apparatus which receives a plurality of sets of video data and outputs a playback video that is obtained by combining a plurality of decoded videos obtained by decoding the plurality of sets of video data, and includes: a decoding means for decoding the plurality of sets of video data to obtain the plurality of decoded videos; a synthesizing means for combining the plurality of decoded videos to obtain the playback video; an indication information reading means for reading out indication information that designates a playback style of the playback video, from at least one of the plurality of sets of video data; and a managing means for managing the playback style by controlling at least one of the operations of the decoding means and the synthesizing means in accordance with the indication information read out by the indication information reading means.
- The second invention is a video data reproducing apparatus which receives a plurality of sets of video data and management data regarding at least one of the plurality of sets of video data and outputs a playback video that is obtained by combining a plurality of decoded videos obtained by decoding the plurality of sets of video data, and is includes: a decoding means for decoding the plurality of sets of video data to obtain the plurality of decoded videos; a synthesizing means for combining the plurality of decoded videos to obtain the playback video; an indication information reading means for reading out indication information that designates a playback style of the playback video, from the management data; and a managing means for managing the playback style by controlling at least one of the operations of the decoding means and the synthesizing means in accordance with the indication information read out by the indication information reading means.
- The third invention is based on the first or second invention and characterized in that the playback video is a video given in a picture-in-picture format.
- The fourth invention is based on the third invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the picture-in-picture format, whether or not a video in a child frame is played in the special mode while a video in a parent frame is being played in the special mode.
- The fifth invention is based on the third invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the picture-in-picture format, whether or not a video in a child frame is displayed while a video in a parent frame is being played in the special mode.
- The sixth invention is based on the third invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the picture-in-picture format, whether or not a video in a parent frame is played in the special mode while a video in a child frame is being played in the special mode.
- The seventh invention is based on the first or second invention and characterized in that the playback video is a video given in a double-frame display format.
- The eighth invention is based on the seventh invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the double-frame display format, whether or not a video in one frame is played in the special mode while a video in the other frame is being played in the special mode.
- The ninth invention is based on the seventh invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the double-frame format, whether or not a video in one frame is displayed while a video in the other frame is being played in the special mode.
- The tenth invention is a video data generating apparatus which is used to output a playback video by combining a plurality of decoded videos that are obtained from a plurality of sets of video data, and includes: an encoding means for encoding input video to obtain encoded video data; and an indication information writing means for writing indication information that designates a playback style of the playback video, into the video data.
- The eleventh invention is a video data generating apparatus which is used to output a playback video by combining a plurality of decoded videos that are obtained from a plurality of sets of video data, and includes: an encoding means for encoding input videos to obtain encoded video data; a generating means for generating management data regarding the video data; and an indication information writing means for writing indication information that designates a playback style of the playback video, into the management data.
- The twelfth invention is based on the eleventh invention and further includes a multiplexed data generating means for generating multiplexed data in which the video data and the management data with the indication information written therein are multiplexed.
- The thirteenth invention is based on any one of the tenth to twelfth inventions and characterized in that the playback video is a video given in a picture-in-picture format.
- The fourteenth invention is based on the thirteenth invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the picture-in-picture format, whether or not a video in a child frame is played in the special mode while a video in a parent frame is being played in the special mode.
- The fifteenth invention is based on the thirteenth invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the picture-in-picture format, whether or not a video in a child frame is displayed while a video in a parent frame is being played in the special mode.
- The sixteenth invention is based on the thirteenth invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the picture-in-picture format, whether or not a video in a parent frame is played in the special mode while a video in a child frame is being played in the special mode.
- The seventeenth invention is based on any one of the tenth to twelfth inventions and characterized in that the playback video is a video given in a double-frame display format.
- The eighteenth invention is based on the seventeenth invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the double-frame display format, whether or not a video in one frame is played in the special mode while a video in the other frame is being played in the special mode.
- The nineteenth invention is based on the seventeenth invention and characterized in that the playback style refers to a playback style during a special playback, and the indication information is information that indicates, in the video in the double-frame format, whether or not a video in one frame is displayed while a video in the other frame is being played in the special mode.
- In the present invention, an indication flag that designates the playback style of the video in the child frame (whether the video should follow the special playback of the parent frame) during special playback of the video in the parent frame is included in the video data of the video for the child frame. Alternatively, the flag is stored in the management data that is independent from the video data for the parent frame and child frame. In this way, indication information using the indication flag is handled with video data when the video data is distributed or the like. In the video reproducing apparatus, the stored indication flag is read out and made use of so that it becomes possible to execute the special playback in picture-in-picture mode in accordance with the distributor's intention (the video in the child frame can be played in the special mode following the video playback of the parent frame or can be played independently). As a result, the playback style in picture-in-picture mode will not depend on the player's existing configuration.
-
FIG. 1 is a functional block diagram showing a schematic configuration of a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 2 is an illustrative view showing a playback style during special playback in a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 3 is a view showing another playback style during special playback in a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 4 is an illustrative view showing still another playback style during special playback in a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 5 is an illustrative view showing still another playback style during special playback in a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 6 shows tables representing the corresponding relationships between the values of indication flags and the playback styles during special playback, used in a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 7 is a functional block diagram showing a schematic configuration of a video data generating apparatus according to the first embodiment of the present invention. -
FIG. 8 is an illustrative view showing a schematic configuration of video data handled in the first embodiment of the present invention. -
FIG. 9 is a functional block diagram showing another configuration of a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 10 is an illustrative view showing another schematic configuration of video data handled in the first embodiment of the present invention. -
FIG. 11 is a functional block diagram showing still another configuration of a video reproducing apparatus according to the first embodiment of the present invention. -
FIG. 12 is an illustrative view showing screen-displayed examples of videos reproduced in the first embodiment of the present invention. -
FIG. 13 is a functional block diagram showing a schematic configuration of a video reproducing apparatus according to the second embodiment of the present invention. -
FIG. 14 is a functional block diagram showing a schematic configuration of a video reproducing apparatus according to the third embodiment of the present invention. -
FIG. 15 is a functional block diagram showing a schematic configuration of a video data generating apparatus according to the third embodiment of the present invention. -
FIG. 16 is an illustrative view showing a schematic configuration of video data handled in the third embodiment of the present invention. -
FIG. 17 is an illustrative view showing a method for realizing a conventional picture-in-picture function. -
FIG. 18 is an example of a conventional picture-in-picture function. -
FIG. 19 is an illustrative view for explaining conventional video content distribution. -
- 1 video reproducing apparatus
- 101 flag reader
- 102, 103 decoders
- 104, 105 buffers (BFs)
- 106 synthesizer
- 107 display unit
- 108 input unit
- 109 decoding manager
- 110 adjuster
- To begin with, a video reproducing apparatus according to the first embodiment of the present invention will be described with reference to
FIGS. 1 through 12 . -
FIG. 1 is a functional block diagram showing a schematic configuration of avideo reproducing apparatus 1 according to the first embodiment of the present invention.Video reproducing apparatus 1 receives two sets of video data (encoded video streams), decodes these and produces an output display of a combined video of the decoded videos to display the combined video. In this specification, the video displayed in the parent frame in a picture-in-picture representation and the video displayed in the child frame in a picture-in-picture representation hereinbelow will be called “main video” and “sub video”, respectively, in distinction from each other. -
Video reproducing apparatus 1 is comprised of: aflag reader 101 for reading out an aftermentioned indication flag from the video data for sub video;decoders synthesizer 106 for synthesizing these decoded videos; adisplay unit 107 for displaying the output video; aninput unit 108 for receiving user input; and adecoding manager 109 for controlling the decoding processes ofdecoders above synthesizer 106 includes anadjuster 110 for adjusting the decoded video for sub video as to its display size and displayed position for synthesizing. -
Video reproducing apparatus 1 according to the present embodiment, inflag reader 101 an aftermentioned indication flag is readout from video data and output. In actual decoding of video data, there are cases in which separation of associated audio data and/or readout of management information accompanying video (information required to decode data, such as information that indicates the encoded format of video and the like, information required to reproduce video, such as play list information that specifies the temporal video clipping and joining) is needed, separation and reading of these are omitted inFIG. 1 for description simplicity. - First, in
flag reader 101 the indication flag that designates a playback style during the special playback is read out from the video data for sub video. The thus read-out indication flag is input todecoding manager 109 to be used during the special playback of the picture-in-picture video. The specific content of the indication flag will be detailed afterwards. - Now, the operation during the normal playback will be described. In the case of the normal playback, the video data for main video and the video data for sub video (with its indication flag read out) are input to
decoders synthesizer 106 after output timing adjustment. -
Synthesizer 106 incorporatesadjuster 110. Of the two decoded videos input tosynthesizer 106, the decoded video corresponding to sub video is input toadjuster 110 fromBF 105. Inadjuster 110, as a pre-process for superimposing the sub video over the main video, image size adjustment and displayed position setting of the sub video are carried out. The numerical values specifying the image size and displayed position of the sub video (child image) may have been previously stored as synthesizing parameters invideo reproducing apparatus 1 or may be input by the user. Alternatively, they may be determined interactively with the user. The thus adjusted sub video is laid over, and combined with, the decoded video corresponding to the main video that is input fromBF 104. - Here, it is possible to make the main video show through by setting the transmittance of the sub video when they are combined. Also, this transmittance may have been stored beforehand as a synthesizing parameter in
video reproducing apparatus 1 or may be determined interactively with the user. - The picture-in-picture video thus combined by and output from
synthesizer 106 is displayed on a monitor or the like throughdisplay unit 107. - Next, the operation when the special playback is directed will be described.
Video reproducing apparatus 1 includesinput unit 108, which receives a special playback direction from the user.Input unit 108, as it receives the special playback direction input, converts it into special playback indication information that represents the direction content and sends the special playback indication information todecoding manager 109. -
Decoding manager 109 receives the special playback indication information frominput unit 108 and the indication flag that designates the playback style during the special playback, read out from the video data for sub video byflag reader 101.Decoding manager 109, as it receives the aforementioned special playback indication information, controls the processes of twodecoders synthesizer 106 so as to perform the special playback in the picture in picture mode, with one of the playback styles shown inFIGS. 2 to 5 . At this point, the indication flag input throughflag reader 101 is used to determine in which playback style the special playback should be done. - Playback style (A) shown in
FIG. 2 shows a playback style in which when the special playback of the main video is directed, the sub video is also played in the special mode following the main video. In this case,decoding manager 109 ofvideo reproducing apparatus 1 directs twodecoders decoders synthesizer 106 similarly to the normal playback, where they are combined to be output and displayed. - Here, in order to make the above-described synchronous special playback easy, it is possible to add a process for matching the inserted positions of I-frames in main video and in sub video with each other when they are encoded. Further, it is also possible to make the data structure of main video and that of sub video coincide with each other, by including the GoP (Group of Picture) structure, or the data structure in the inter-frame predictive-encoding system defined in the MPEG (Moving Picture Expert Group) standard. Matching the data structures of main video and sub video by including the GoP structure makes it possible to achieve smooth synchronization including P-frames during the special playback.
- Playback style (B) shown in
FIG. 3 shows a playback style in which when the special playback of main video is directed, the output of sub video is stopped while the special playback of main video is being played, and when the normal playback of main video is restarted, the sub video is combined once again and displayed from the time position corresponding to the time position of the main video from which the normal playback is restarted. In this case,decoding manager 109 ofvideo reproducing apparatus 1 directsdecoder 102 alone to execute the special playback (a decoding process for the special playback). Also,decoding manager 109 directssynthesizer 106 to stop combining sub video during the special playback. When restart of the normal playback is directed,decoding manager 109 directsdecoder 102 to perform the normal playback (a decoding process for the normal playback) and also directsdecoder 103 to start decoding the video data of sub video from the time position corresponding to the time position of the main video from which the normal playback is restarted. Then, after normal playback is restarted, both the main and sub decoded images are input tosynthesizer 106 where they are combined to be output and displayed. - The playback styles in
FIGS. 2 and 3 are the examples in which main video and sub video are reproduced in synchronization. That is, in the playback styles inFIGS. 2 and 3 , main video and sub video are played back based on the same time reference. - Playback style (C) shown in
FIG. 4 shows a playback style in which when the special playback of main video is directed, main video only is played in the special mode while sub video remains being played normally. In this case,decoding manager 109 ofvideo reproducing apparatus 1 directsdecoder 102 alone to execute the special playback (a decoding process for the special playback).Decoder 103 continues decoding for the normal playback. Then the main video that is output in the special playback mode fromdecoder 102 and the sub video that is output in the normal playback mode fromdecoder 103 are input tosynthesizer 106 similarly to the normal playback mode, whereby they are combined to be output and displayed. - Playback style (D) shown in
FIG. 5 shows a playback style in which when the special playback of main video is directed, the output of sub video is stopped while the special playback of main video is continued, and after the normal playback of the main video is restarted, the sub video is restarted to be synthesized and displayed from the time position where the sub video was stopped. In this case,decoding manager 109 ofvideo reproducing apparatus 1 directsdecoder 102 alone to execute the special playback (a decoding process for the special playback). Also,decoding manager 109 directssynthesizer 106 to stop synthesizing of the sub video during the special playback. When restart of the normal playback is directed,decoding manager 109 directsdecoder 102 to perform the normal playback (a decoding process for the normal playback) and also directsdecoder 103 to start decoding of the sub video from the position where the sub video was stopped when the special playback was started. Then, after the normal playback is restarted, both main and sub videos are input tosynthesizer 106 where they are combined to be output and displayed. - The playback styles in
FIGS. 4 and 5 are the examples in which reproduction of main video and that of sub video become asynchronous when the special playback is performed. That is, in the playback styles inFIGS. 4 and 5 , the main video and sub video are played based on different reference points of time. - Now, the indication flag will be described. The indication flag read out at
flag reader 101 and input todecoding manager 109 is used to determine in which style, among the above-described styles, the special playback is performed. That is, the value of the indication flag contained in the video data for sub video controls whether the sub video is played synchronously (FIGS. 2 and 3 ) or asynchronously (FIGS. 4 and 5 ) with the main video. In this specification, the following three types are defined as the indication flags to be set. - A binary flag for indicating, when main video is played in the special mode, whether sub video is played in the special mode following the main video or is played in an independent mode (e.g., the normal mode), not being played following the main video.
- A binary flag that, when main video is played in the special mode, prohibits sub video from being played in the special mode in accordance with the main video. When this flag is “true”, the sub video is always played independently (e.g., in the normal mode) from the special playback of the main video.
- A binary flag that, when the main video is played in the special mode, prohibits the sub video from being played independently (e.g., in the normal mode) not following the main video. When this flag is “true”, sub video is always played in the special mode, following main video.
- The video data contains anyone or more of these indication flags, based on the value or the values, the playback style in picture in picture during the special playback in
video reproducing apparatus 1 is determined. Tables inFIG. 6 show specific corresponding relationships between the values of these indication flags and possible playback styles (A) (FIG. 2 ) and (C) (FIG. 4 ). - Table 601 in
FIG. 6 shows the relationships between the value of the playback style indication flag, “independent” or “dependent” and the playback style whichvideo reproducing apparatus 1 is permitted to take when the playback style indication flag is “independent” or “dependent”. When the playback style indication flag is “independent”, sub video does not follow the special playback of main video and is played in the normal mode based on an independent reference time. When the playback style indication flag is “dependent”, sub video follows the special playback of main video and is played in special mode based on the same reference time. - Here, when in order to facilitate synchronous special playback a process of matching the inserted positions of I-frames in main video and in sub video with each other was added when they were encoded, the value of this flag can be interpreted as directly indicating whether the positions of I-frames are adjusted (the flag value is “dependent”) or not matched (the flag value is “independent”).
- Table 602 in
FIG. 6 shows the relationships between the value of the dependent playback disable flag, “true” or “false” and the playback style whichvideo reproducing apparatus 1 is permitted to take when the dependent playback disable flag is “true” or “false”. When the dependent playback disable flag is “true”, sub video does not follow the special playback of main video and is played in the normal mode based on an independent reference time. On the other hand, when the dependent playback disable flag is “false”,video reproducing apparatus 1 can play in either mode. - Further, table 603 in
FIG. 6 shows the relationships between the value of the independent playback disable flag, “true” or “false” and the playback style whichvideo reproducing apparatus 1 is permitted to take when the independent playback disable flag is “true” or “false”. When the independent playback disable flag is “true”, sub video is played in the special mode based on the same reference time, following the special playback of main video. On the other hand, when the independent playback disable flag is “false”,video reproducing apparatus 1 can play in either mode. - The indication flags shown herein are mere examples, and any of these is a binary flag taking values of ‘0’ and ‘1’. However, it is also possible to define and use a further complex indication flag taking multiple values. For example, it is possible to define an indication flag that prohibits dependent playback and permits independent playback and prohibits independent playback in the style of stopping reproduction of sub video as in
FIG. 5 and only permits independent playback in the style of continuing normal playback of sub video as inFIG. 4 . - In other words, other than the aforementioned binary flag taking two values of ‘0’ and ‘1’, representing ‘dependent’ or ‘independent’ playback, another binary flag taking two values of ‘0’ and ‘1’, representing ‘displayed’ or ‘not displayed’ or indicating whether sub video is continued to display while main video is being played in the special mode (
FIGS. 2 and 4 ) or sub video is not displayed while main video is being played in the special mode (FIGS. 3 and 5 ), can be defined, so that it is possible to uniquely designate one of the playback styles (A) to (D) shownFIGS. 2 to 5 by combination of the values of these flags. Here, the former (the flag that represents whether playback is done ‘dependently’ or ‘independently’) and the latter (the flag that represents whether sub video is ‘displayed’ or ‘not displayed’) may be named ‘playback indication flag’ and ‘display indication flag’ for distinction. - For example, when the playback indication flag is set at ‘dependent’ and the display indication flag is set at ‘displayed’, playback style (A) of
FIG. 2 is selected. In this reproduction, the sub video combined with main video can be seen as if the sub video were completely part of the main video, hence this style has the effect of showing main video and sub video so as not to be distinguishable in appearance. Therefore, if the video distributor wants such effect, each indication flag is set as above. On the contrary, if sub video is wanted to be shown as an additional image different from main video, the playback indication flag is set at ‘dependent’ and the display indication flag is set at ‘not displayed’ so as to select playback style (B) ofFIG. 3 . - As another case, when the playback indication flag is set at ‘independent’ and the display indication flag is set at ‘displayed’, playback style (C) of
FIG. 4 is selected. This is the playback style to which a sub video which has markedly high priority, such as a sub video whose actual playback time is strictly determined, is applied, and the playback of the sub video will not stop until the sub video is completely played. On the other hand, in playback style (D) ofFIG. 5 in which the playback indication flag is set at ‘independent’ and the display indication flag is set at ‘not displayed’, playback and display of sub video is stopped while main video is played back in the special mode, and after the normal playback of main video is restored, playback of the sub video is restarted from the position at which it was stopped. As a result, it is possible to avoid such an event that part of the sub video is carelessly missed while the apparatus is operated, hence this style is suitable to make sub video be seen properly. - In this way, use of an indication flag given with video data makes it possible to designate the playback style during the special playback in
video reproducing apparatus 1. This indication flag is added on the side of the video data distributor when the video data of sub video is produced. -
FIG. 7 shows a block diagram showing a schematic configuration of a video data generating apparatus 11. Video data generating apparatus 11 includes anencoder 701, aflag setter 702 and aflag writer 703. Directional input from a video distributor is converted into an indication flag inflag setter 702. Input video is encoded byencoder 701 and converted into video data (encoded video stream). Then, the indication flag is stored into the video data (encoded video stream) throughflag writer 703. - When the indication flag is embedded into video data (encoded video stream), the video distributor can specify the video data so that it is played in the special mode in picture in picture on a video reproducing apparatus in a playback style designated by the distributor.
FIG. 8 shows examples of video data generated by video data generating apparatus 11 ofFIG. 7 , particularly showing examples of embedded positions of indication flags. As shown inFIG. 8 , the indication flag may be embedded in the sequence header of video data (encoded video stream) (801), the indication flag may be embedded in each packet header (802), or when management information (play list information etc.) associated with an encoded video stream is recorded inside the video data, the indication flag may be stored in the management information (803). However, the embedded position of the indication flag in video data should not be limited to these. - The above
video reproducing apparatus 1 according to the first embodiment was described taking an example in which the indication flag is included in the input video data (encoded video stream), but the invention is not limited to this. For example, when the data stream of video data is given with a data stream (management data stream) in which management information for managing the video data stream (the information required for data decoding such as information representing the video encoding system and/or information required for video reproduction such as play list information specifying temporal video clipping and joining) is given, and these data streams are input in a multiplexed data form, the indication flag may be stored in the management data stream, instead of being stored in the video data stream. - Further, the video data input to the aforementioned
video reproducing apparatus 1 was described taking an example in which the indication flag is included in the video data of the sub video, however, not limited to this it is also possible that the indication flag is input while being stored in the video data of main video. The indication flag in this case functions as a flag that indicates whether an arbitrary sub video should or should not follow the special playback of the main video when the video data of an arbitrary sub video is combined with the video data of that main video. -
FIG. 9 illustratively summarizes the differences of these input patterns. Designated at 91 and 92 are patterns where two sets of video data (encoded video streams) including an indication flag are input.Pattern 91 is the same as the portion a inFIG. 1 . Designated at 93 and 94 are patterns where management data (stream) including an indication flag and a video data (stream) are multiplexed so that the multiplexed data is input.Separators Patterns patterns FIG. 1 . - Here, in 93 and 94 of
FIG. 9 , the multiplexed data is depicted to as being formed of two data streams of video data and management data alone, but practically audio data streams and other data streams also may be multiplexed. These are not illustrated inFIG. 9 for simplicity. -
FIG. 10 shows examples of video data (encoded video stream) and a management data stream that constitute multiplexed data. As shown inFIG. 10 , the indication flag is embedded in playback management information (play list information etc.) regarding the video data (encoded video stream) (1001), or is stored in decoding management information (encoding system information etc.) regarding the video data (encoded video stream) (1002). Here, the embedded position of the indication flag in the management data is not limited to this drawing. - Two
decoders FIG. 1 either may have identical decoding capacities or may have different decoding capacities. Invideo reproducing apparatus 1 according to the first embodiment, which set of video data should be assigned to the video data for main video or to the video data for sub video has been determined beforehand when they are input. Accordingly, it is possible to define a set of video data having a lower resolution (smaller image size) than that of main video as being dedicated for sub video. In this case, as thedecoder 103 to which the video data for sub video is input, a dedicated decoder that decodes video of lower resolution may be used for decoding the video data dedicated for sub video. - Further, in
video reproducing apparatus 1 inFIG. 1 , there could be a case where the video data to be input is video data that has not been encoded. In this case, no decoding of video data is needed, so thatdecoders separators 102′ and 103′) that separate the input video data appropriately and output them. Further,decoding manager 109 can be replaced with a functional block (separation manager 109′) for managing the aforementioned functional blocks (separators 102′ and 103′) so as to perform separation and output of the video data. - Further, though
synthesizer 106 invideo reproducing apparatus 1 shown inFIG. 1 is one that adjusts sub video only and does not make any adjustment for main video (that is, main video is displayed in the full screen) (FIG. 11( a)),synthesizer 106, not limited to this, can be replaced with asynthesizer 1106 which also includes anadjuster 1110 on the main video side to output adjusted video as shown inFIG. 11( b).FIG. 12 shows examples of output videos whensynthesizer 1106 is used in place. In this case, main video can be resized arbitrarily as shown by 1202 inFIG. 12 , or main and sub videos may be laid out side by side as two frames on the screen without the two images overlapping each other, as shown by 1203. - Other than the utility for picture-in-picture display, the video reproducing apparatus of the present invention can be applied to a video reproducing apparatus that displays two image frames, as shown in 1203 of
FIG. 12 . That is, embedding an indication flag in video data enables additional control that designates whether the special playback should be performed on one video in accordance with the special playback for the other video, it is hence possible to perform the special playback with the video in a double-frame display format in a mode intended by the video distributor side. - In
video reproducing apparatus 1 according to the first embodiment of the present invention, an indication flag as the information representing the playback style during the special playback in picture in picture is input together with video data, and based on the indication flag the playback style during the special playback is determined. Accordingly, supplying the video data with the indication flag when the video distributor produces the video data, enables the video reproducing apparatus to perform the special playback in the picture-in-picture playback form, in a playback style that was intended by the distributor. - In the case of
video reproducing apparatus 1 of the present embodiment or in thecase 91 ofFIG. 9 , each video data has been defined to be for main video or for sub video when it is input, but a video data item produced for sub video may also be input as the video data for main video. In this case, the indication flag stored in the video data is disregarded. Similarly, in thecase 92 ofFIG. 9 , a video data item containing an indication flag that was generated for main video may be input as the video data for sub video. Also in this case, the indication flag stored in the video data is disregarded. Further, a default playback style may be provided invideo reproducing apparatus 1 so that the special playback is performed in the default playback style when no indication flag is detected from either main video or sub video. - Further, the indication flag explained in the above first embodiment is a flag that designates the behavior of sub video when main video is played in the special mode. However, it is possible to define an indication flag that designates the behavior of main video when the special playback of sub video is directed. Though this reference will not be particularly mentioned in the following embodiments, this matter should be similarly applied to the other embodiments.
- Also, as the flags that designate the behavior of sub video to convey the video distributor's intention, other than the indication flag that designates the playback style in the special playback mode, a flag that prohibits sub video from being moved and/or enlarged may be stored together. The flag that prohibits sub video from being moved and/or enlarged is applied to players in which the display size and displayed position of sub video can be changed by the user. When the flag that prohibits sub video from being moved and/or enlarged is set to be ‘true’, the display size and displayed position of sub video are fixed relative to main video so that the user control will be rejected.
- Further, in
video reproducing apparatus 1 of the above first embodiment, a method of controlling the processes in the decoders was described as the method for realizing the special playback, the method of realizing the special playback is not limited to this. For example, in an exemplary case of high-speed playback, high-speed playback can also be realized by decoding all the frames first, then thinning the decoded images output frombuffers video reproducing apparatus 1 shown inFIG. 1 is a mere configurational form of an apparatus for realizing the special playback, and other apparatus configurations than this can be taken to realize the special playback, and the control of the special playback using indication flags of the present invention can similarly be applied to these. Though this reference will not be particularly mentioned in the following embodiments, this matter should be similarly applied to the other embodiments. - Next, a
video reproducing apparatus 2 according to the second embodiment of the present invention will be described usingFIG. 13 . -
FIG. 13 is a functional block diagram showing a schematic configuration of avideo reproducing apparatus 2 according to the second embodiment of the present invention.Video reproducing apparatus 2 includes:flag readers decoders synthesizer 1307; a display unit 1308 (includingadjusters 1312 and 1313);display unit 1308; aninput unit 1309; adecoding manager 1310 and asynthesizing manager 1311 for controlling the synthesizing process performed bysynthesizer 1307. Of these, either offlag readers flag reader 101 shown inFIG. 1 . Further,decoders buffers display unit 1308 have the same functions asdecoders buffers display unit 107 shown inFIG. 1 , respectively. Moreover,adjusters adjuster 110 shown inFIG. 1 . The operation ofvideo reproducing apparatus 2 according to the second embodiment will be described hereinbelow focusing on the difference fromvideo reproducing apparatus 1 of the first embodiment. - In the above-described
video reproducing apparatus 1 according to the first embodiment, two inputs of video data are supplied with one having been assigned for the main and the other for the sub in the input stage. This scheme is most efficient when there is a set of video data that is dedicated for sub video, for example, a complimentary video added to a main video or something trivial like a commentary video of untold stories during shooting, which will not be played as main video. - On the contrary, in the
video reproducing apparatus 2 of the second embodiment, distinction of two inputs of video data is not made with no classifying them as the main data or the sub data at the input stage, and the two videos are determined to be the main video and the sub video by adjusting the combination of the two videos in the video synthesizing stage. This scheme is most effective when the main video view and the sub video view are frequently swapped, for example, the displayed video views are frequently swapped in a multi-angle representation. - This is why
video reproducing apparatus 2 includes synthesizing manager 1131, which is a new functional block that is not provided forvideo reproducing apparatus 1. -
Input unit 1309 receives from the user a video select indication for swapping the main video and sub video (for selecting one as the main video and the other as the sub video) in addition to a special playback indication.Input unit 1309, when receiving the video select indication, issues video select indication information and transmits it to synthesizingmanager 1311. -
Synthesizing manager 1311 obtains the knowledge of the one for main display and the one for sub display from the aforementioned video select indication information, and sends out synthesizing parameters corresponding to the main video display and the sub video display, indicated by the video select indication information, toadjusters synthesizer 1307 of the top and bottom relationship (the sub image is laid over the main image) when they are put in layers. It is also possible to send settings such as transmittance etc. at the same time. Further, the decoding manager sends select information that represents which is selected as the sub video, todecoding manager 1310. -
Flag readers decoding manager 1310. - When decoding
manager 1310 receives the special playback indication information issued byinput unit 1309 in accordance with the user's special playback direction, the manager, referring to the aforementioned select information (information that represents which is selected as the sub video) supplied from synthesizingmanager 1311, identifies the indication flag of the video data to be assigned for sub video, from two indication flags which has been input, and determines the playback style for the special playback in the picture-in-picture mode based on the indication flag, in a similar way to that as shown in the first embodiment. - In
video reproducing apparatus 2, the input two sets of video data are both video data that can be reproduced as main and sub videos. Accordingly, invideo reproducing apparatus 2,decoders 1303 and 134 have the completely equivalent functions. - Next, a
video reproducing apparatus 3 according to the third embodiment of the present invention will be described usingFIGS. 14 to 16 . -
FIG. 14 is a functional block diagram showing a schematic configuration ofvideo reproducing apparatus 3 according to the third embodiment of the present invention.Video reproducing apparatus 3 includes aseparator 1401 for separating multiplexed data in which plural sets of video data are multiplexed, into plural sets of video data, management data and others; aflag reader 1402 for reading out an indication flag from the management data; twodecoders display unit 1408; aninput unit 1409; and adecoding manager 1410. Of these,decoders synthesizer 1407,adjuster 1411,display unit 1408 anddecoding manager 1410 have the same functions asdecoders buffers synthesizer 106,adjuster 110,display unit 107 anddecoding manager 109 invideo reproducing apparatus 1 shown inFIG. 1 , respectively. In other words, thevideo reproducing apparatus 3 according to the third embodiment is different from thevideo reproducing apparatus 1 according to the first embodiment, only inseparator 1401, flag reader 1402 (flag reader 101 in video reproducing apparatus 1) and input unit 1409 (input unit 108 in video reproducing apparatus 1). Now, thevideo reproducing apparatus 3 according to the third embodiment will be described focusing on the difference from thevideo reproducing apparatuses - In the above-described
video reproducing apparatuses video reproducing apparatus 3 according to the third embodiment, in a condition where plural sets of video data (encoded video streams) are given with an independent management data stream for controlling these video data, an indication flag stored in the management data stream is used to control the playback style in the special playback mode in picture-in-picture playback. - That is, the indication flag handled in
video reproducing apparatus 3 is not one that represents the playback style for a particular one of the input video data but one that operates in such a manner that, only after one set of data is determined to the main video data and the other is determined to be the sub video data, it controls the playback style of the determined sub video. That is, invideo reproducing apparatus 1 one video data, which has been determined as the main video and the other video data, which has been determined as the sub video are input; and invideo reproducing apparatus 2, each video data is determined as either the main video or sub video in the synthesizing stage. In contrast, invideo reproducing apparatus 3, when the multiplexed data is separated byseparator 1401 one of the data is determined as the main video and the other is determined as the sub video, then the processes afterdecoders -
Video reproducing apparatus 3 according to this embodiment is supplied with multiplexed data made of two sets of video data (encoded video streams) and a management data stream containing an indication flag and displays a video formed by combining the decoded images of the two sets of video data.FIG. 15 shows a functional block diagram showing a schematic configuration of a video data generating apparatus 31 for generating the multiplexed data to be input. - Video data generating apparatus 31 of
FIG. 15 includes twoencoders management information generator 1503, aflag setter 1504, aflag writer 1505 and amultiplexer 1506. - The two input videos are converted into individual sets of video data (encoded video streams) through
encoders Flag setter 1504 generates an indication flag that corresponds to the playback style designated by the video distributor. The generated indication flag is written into the management information (management data stream) that is prepared bymanagement information generator 1503, byflag writer 1505. - The management information stored in the management data stream includes: information recorded corresponding to individual video data (decoding management information), such as information representing the encoding system of the video data (encoded video stream) and the like; common information (playback management information) such as play list information that specifies playback of a plurality of sets of video data based on temporal clipping and joining information of video; and others.
- Further,
FIG. 16 shows an example of data (an example of an embedded position of an indication flag) before multiplexing of data generated in video data generating apparatus 31 ofFIG. 15 . As shown inFIG. 16 the indication flag is stored inside the common playback management information in management data stream (1601). These video data and management data are multiplexed bymultiplexer 1506, forming multiplexed data. - After being supplied with the multiplexed data generated by video data generating apparatus 31 shown in
FIG. 15 ,separator 1401 ofvideo reproducing apparatus 3 ofFIG. 14 operates as follows. - Similarly to
video reproducing apparatus 2 of the second embodiment,input unit 1409 receives from the user a video select indication for swapping the main video and sub video (for selecting one as the main video and the other as the sub video).Input unit 1409, as receiving the video select indication, issues corresponding video select indication information and transmits it toseparator 1401. -
Separator 1401 separates the input multiplexed data into two sets of video data and management data, then supplies the video data that has been designated as main video todecoder 1403 and the video data that has been designated as sub video todecoder 1404 in accordance with the supplied video select indication information. The management data output fromseparator 1401 is supplied toflag reader 1402, where an indication flag is read out. The read-out indication flag is input todecoding manager 1410 and is used to control the playback style during the special playback in picture-in-picture reproduction. After this point, the same operation as described in the first embodiment follows. - In
FIGS. 14 to 16 for the third embodiment, description is made such that the multiplexed data is composed of video data (encoded video streams) and management data (management data stream) alone, but practically, there are cases that audio data and other data are multiplexed. Here, for description convenience, such data other than the video data and management data are omitted from the illustration. - Further, video data (encoded data streams) and management data (management data stream) input to
video reproducing apparatus 3 are depicted to be input in the multiplexed form. However, they do not necessarily need to be multiplexed. It is also possible to provide a configuration in which two sets of video data and one set of management information are input through different individual channels so that they are processed. That is, the main feature of thevideo reproducing apparatus 3 according to the third embodiment is nothing other than that the indication flag that will not depend on any set of video data and can be used in common with plural sets of video data, is given to the apparatus through the intermediary of the management data. - In any of the above embodiments of the present invention, the video reproducing apparatus according to each of the embodiments of the present invention was described on the assumption of the condition in which the video data (and management data) input through transmission paths such as broadcasting and communication is directly reproduced by the video reproducing apparatus. However, the applicable condition of the present invention is not limited to this. For example, the present invention is applicable to a condition in which video data (and management data) has been recorded on a recording medium in advance and the video data (and management data) recorded on the recording medium is sequentially read out to play it back. Application to package distribution in
FIG. 19 corresponds to this. Further, the situation is the same where the data is recorded once on a recording medium through a transmission channel and then the recorded video data (and management data) is read out to play it back. That is, the present invention can be applied to a recording medium on which video data or management data, including an indication flag detailed in each embodiment has been recorded, as well as to a video reproducing apparatus for playing back such a recording medium. - The indication flag stored in the video data (or management data) described in each embodiment of the present invention was described as unchangeable information on the playback style during the special playback of picture-in-picture video in order to reflect the video distributor's intention. However, this indication flag stored in the video data (or management data) may be used on the playback side as a field for recording the user's playback preference. Alternatively, there could occur a case where the aforementioned indication flag is rewritten on the video reproducing apparatus side to the value that is limited by the reproducing capacity of the video reproducing apparatus. Such rewriting is done by the video reproducing apparatus, which rewrites the value in the storage field of the indication flag, when recording video data (and management data) input through a transmission channel such as broadcasting, communication or the like onto a recording medium or when reading out video data (and management data) sequentially from a recording medium to play it. This rewriting process may be done by user's direct input or may be modified dynamically using a program such as Java (registered trademark) or the like. That is, the present invention can be applied to a video reproducing apparatus for the video data or management data, containing an indication flag that was detailed in each embodiment no matter where the indication flag value was finally set up.
- Here, it is to be understood that the embodiments disclosed herein are, in all respects, illustrative and not restrictive. The scope of the present invention is defined by the scope of claims rather than the foregoing description, and all changes that fall within the meaning and scope equivalent to the scope of claims are intended to be embraced by the claims.
Claims (12)
1-20. (canceled)
21. A video synthesizing apparatus which receives a plurality of sets of video data and outputs a playback video in a picture-in-picture format that is obtained by combining videos of the plurality of sets of video data, comprising:
a reading means for reading out indication information that designates a playback style while the playback video is being played in a special mode, from at least one of the plurality of sets of video data;
a synthesizing means, in accordance with the indication information readout by the reading means, for combining the videos of the plurality of sets of video data in the designated playback style,
wherein
the indication information is information that indicates, in a playback video in a picture-in-picture format, a playback style of a video in a parent frame and a video in a child frame.
22. A video synthesizing apparatus which receives a plurality of sets of video data and management data regarding at least one of the plurality of sets of video data and outputs a playback video in a picture-in-picture format that is obtained by combining videos of the plurality of sets of video data, comprising:
a reading means for reading out indication information that designates a playback style while the playback video is being played in a special mode, from the management data;
a synthesizing means, in accordance with the indication information read out by the reading means, for combining the videos of the plurality of sets of video data in the designated playback style,
wherein
the indication information is information that indicates, in a playback video in a picture-in-picture format, a playback style of a video in a parent frame and a video in a child frame.
23. The video synthesizing apparatus according to claim 21 or 22 , wherein the playback style is, in the playback video in the picture-in-picture format, whether or not a video in a child frame is displayed while a video in a parent frame is being played in the special mode.
24. The video synthesizing apparatus according to claim 21 or 22 , wherein the playback style is, in the playback video in the picture-in-picture format, whether or not a video in a child frame is played in the special mode while a video in a parent frame is being played in the special mode.
25. The video synthesizing apparatus according to claim 21 or 22 , wherein the playback style is, in the playback video in the picture-in-picture format, whether or not a video in a parent frame is played in the special mode while a video in a child frame is being played in the special mode.
26. A program performed by the video synthesizing apparatus according to claim 21 or 22 , in order to output the playback video in the picture-in-picture format based on the indication information.
27. A video synthesizing apparatus which receives a plurality of sets of video data and outputs a playback video in a picture-in-picture format that is obtained by combining videos of the plurality of sets of video data, comprising:
a reading means for reading out indication information that designates a playback style while the playback video is being played in a special mode, from at least one of the plurality of sets of video data;
a synthesizing means, in accordance with the indication information readout by the reading means, for combining the videos of the plurality of sets of video data in the designated playback style,
wherein
the indication information is information that indicates, in the double-frame format in which two videos do not overlap each other, a playback style of a first video in a first frame and a second video in a second frame.
28. A video synthesizing apparatus which receives a plurality of sets of video data and management data regarding at least one of the plurality of sets of video data and outputs a playback video in a picture-in-picture format that is obtained by combining videos of the plurality of sets of video data, comprising:
a reading means for reading out indication information that designates a playback style while the playback video is being played in a special mode, from the management data;
a synthesizing means, in accordance with the indication information readout by the reading means, for combining the videos of the plurality of sets of video data in the designated playback style,
wherein
the indication information is information that indicates, in the double-frame format in which two videos do not overlap each other, a playback style of a first video in a first frame and a second video in a second frame.
29. The video synthesizing apparatus according to claim 27 or 28 , wherein the playback style is, in the playback video in the double-frame format, whether or not the second video in the second frame is displayed while the first video in the first frame is being played in the special mode.
30. The video synthesizing apparatus according to claim 27 or 28 ,
wherein the playback style is, in the playback video in the double-frame format, whether or not the second video in the second frame is played in the special mode while the first video in the first frame is being played in the special mode.
31. A program performed by the video synthesizing apparatus according to claim 27 or 28 , in order to output the playback video in the double-frame format based on the indication information.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/798,175 US20100195983A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005179791 | 2005-06-20 | ||
JP2005-179791 | 2005-06-20 | ||
JP2005/227579 | 2005-08-05 | ||
JP2005227579A JP4364176B2 (en) | 2005-06-20 | 2005-08-05 | Video data reproducing apparatus and video data generating apparatus |
PCT/JP2006/311841 WO2006137292A1 (en) | 2005-06-20 | 2006-06-13 | Video data reproducing device, video data generating device, and recording medium |
US92093709A | 2009-04-03 | 2009-04-03 | |
US12/798,175 US20100195983A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/311841 Continuation WO2006137292A1 (en) | 2005-06-20 | 2006-06-13 | Video data reproducing device, video data generating device, and recording medium |
US92093709A Continuation | 2005-06-20 | 2009-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100195983A1 true US20100195983A1 (en) | 2010-08-05 |
Family
ID=37570321
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/920,937 Active 2028-07-14 US8401368B2 (en) | 2005-06-20 | 2006-06-13 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,235 Abandoned US20100220973A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,178 Expired - Fee Related US9319654B2 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,176 Abandoned US20100195984A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,225 Abandoned US20100202760A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,175 Abandoned US20100195983A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
Family Applications Before (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/920,937 Active 2028-07-14 US8401368B2 (en) | 2005-06-20 | 2006-06-13 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,235 Abandoned US20100220973A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,178 Expired - Fee Related US9319654B2 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,176 Abandoned US20100195984A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
US12/798,225 Abandoned US20100202760A1 (en) | 2005-06-20 | 2010-03-31 | Video data reproducing apparatus, video data generating apparatus and recording medium |
Country Status (7)
Country | Link |
---|---|
US (6) | US8401368B2 (en) |
EP (6) | EP2200300B1 (en) |
JP (1) | JP4364176B2 (en) |
KR (4) | KR100992767B1 (en) |
CN (5) | CN101808215B (en) |
ES (3) | ES2432021T3 (en) |
WO (1) | WO2006137292A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023049914A1 (en) * | 2021-09-27 | 2023-03-30 | Bytedance Inc. | Method, device and medium for video processing |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101204089B (en) * | 2005-06-20 | 2010-05-19 | 夏普株式会社 | Video data reproducing device and video data generating device |
JP2007153738A (en) | 2005-11-30 | 2007-06-21 | Kuraray Co Ltd | 1,3-butadiene-containing mixture and method for producing the same |
JPWO2008132774A1 (en) | 2007-04-13 | 2010-07-22 | パナソニック株式会社 | Moving picture decoding method, moving picture decoding apparatus, and electronic device |
JP2009027552A (en) * | 2007-07-20 | 2009-02-05 | Funai Electric Co Ltd | Optical disk playback apparatus |
US20110116722A1 (en) * | 2008-07-04 | 2011-05-19 | Yukinaga Seki | Coded stream reproduction device and coded stream reproduction method |
EP2306729B1 (en) | 2008-07-31 | 2013-08-14 | Mitsubishi Electric Corporation | Video encoding device, video encoding method, video reproduction device, video recording medium, and video data stream |
US8321401B2 (en) * | 2008-10-17 | 2012-11-27 | Echostar Advanced Technologies L.L.C. | User interface with available multimedia content from multiple multimedia websites |
US8537201B2 (en) * | 2010-10-18 | 2013-09-17 | Silicon Image, Inc. | Combining video data streams of differing dimensionality for concurrent display |
CN105635772A (en) * | 2015-12-30 | 2016-06-01 | 北京奇艺世纪科技有限公司 | Picture-in-picture video playing method and mobile terminal supporting picture-in-picture video playing |
CN109743635B (en) * | 2018-11-08 | 2020-05-22 | 北京微播视界科技有限公司 | Comment reply method, device, equipment and storage medium |
CN111432260A (en) * | 2020-03-31 | 2020-07-17 | 腾讯科技(深圳)有限公司 | Method, device and equipment for synchronizing multiple paths of video pictures and storage medium |
CN114745600B (en) * | 2022-06-10 | 2022-09-27 | 中国传媒大学 | Video label labeling method and device based on SEI |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4890168A (en) * | 1987-05-20 | 1989-12-26 | Sanyo Electric Co., Ltd. | Program scan apparatus for VTR utilizing picture-in-picture display |
US5852474A (en) * | 1995-08-24 | 1998-12-22 | Hitachi, Ltd. | Television receiver including playback mode for storing screen image information for predetermined time to reproduce and its method |
US5923627A (en) * | 1995-08-21 | 1999-07-13 | Matsushita Electric Industrial Co., Ltd. | Optical disc for coordinating the use of special reproduction functions and a reproduction device for the optical disk |
US6160590A (en) * | 1997-03-31 | 2000-12-12 | Sanyo Electric Co., Ltd. | Video signal processing circuit inhibiting display of distorted images |
US20030184679A1 (en) * | 2002-03-29 | 2003-10-02 | Meehan Joseph Patrick | Method, apparatus, and program for providing slow motion advertisements in video information |
US20040131332A1 (en) * | 1998-11-16 | 2004-07-08 | Wilson Patricia E.M. | Method and device for recording real-time information |
US20040168185A1 (en) * | 2003-02-24 | 2004-08-26 | Dawson Thomas Patrick | Multimedia network picture-in-picture |
US20060078301A1 (en) * | 2004-06-18 | 2006-04-13 | Wataru Ikeda | Playback apparatus, program, playback method |
US7366396B2 (en) * | 2001-07-07 | 2008-04-29 | Lg Electronics Inc. | Method and apparatus of recording/reproducing multi-channel stream |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX9709190A (en) * | 1996-05-09 | 1998-03-31 | Matsushita Electric Ind Co Ltd | Multimedia optical disk, reproducing device, and reproducing method capable of superposing sub-video upon main video in well-balanced state irrespective of position of main video on screen. |
US6212680B1 (en) * | 1998-03-04 | 2001-04-03 | Kabushiki Kaisha Toshiba | Multi-channel electronic programming guide and soft picture-in-picture acquisition for use with digital television |
US6317164B1 (en) * | 1999-01-28 | 2001-11-13 | International Business Machines Corporation | System for creating multiple scaled videos from encoded video sources |
US6223089B1 (en) * | 1999-03-15 | 2001-04-24 | Raylar Design, Inc. | Method and apparatus for controlling computers remotely |
JP2000358217A (en) | 1999-06-14 | 2000-12-26 | Matsushita Electric Ind Co Ltd | Digital broadcasting system and digital video recording and reproducing device |
US7177531B2 (en) * | 2000-12-05 | 2007-02-13 | Matsushita Electric Industrial Co., Ltd. | Record and playback apparatus and record medium |
JP4086477B2 (en) * | 2001-03-23 | 2008-05-14 | 三洋電機株式会社 | Content encoding method, content distribution method, and content receiving terminal device |
JP2002344893A (en) | 2001-05-14 | 2002-11-29 | Hitachi Ltd | Digital broadcasting transmitter and receiver |
JP2003289509A (en) | 2002-01-22 | 2003-10-10 | Matsushita Electric Ind Co Ltd | Stored contents reproducing apparatus, reproducing method therefor, reproducing program therefor, medium therefor, contents transmitting-receiving system, and specific frame information file |
US7849487B1 (en) * | 2002-05-31 | 2010-12-07 | Microsoft Corporation | Review speed adjustment marker |
KR101049754B1 (en) * | 2002-09-26 | 2011-07-19 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Digital Information Signal Receiver |
US20050185936A9 (en) * | 2002-11-08 | 2005-08-25 | Ich-Kien Lao | Mobile and vehicle-based digital video system |
JP4285099B2 (en) * | 2003-06-19 | 2009-06-24 | パナソニック株式会社 | Data reproduction method and data reproduction apparatus |
JP2007510316A (en) * | 2003-09-12 | 2007-04-19 | オープン ティーヴィー インコーポレイテッド | Control method and system for recording and playback of interactive application |
JP2005123775A (en) | 2003-10-15 | 2005-05-12 | Sony Corp | Apparatus and method for reproduction, reproducing program and recording medium |
-
2005
- 2005-08-05 JP JP2005227579A patent/JP4364176B2/en active Active
-
2006
- 2006-06-13 ES ES10158803T patent/ES2432021T3/en active Active
- 2006-06-13 KR KR1020107001633A patent/KR100992767B1/en not_active IP Right Cessation
- 2006-06-13 KR KR20087001254A patent/KR101027381B1/en not_active IP Right Cessation
- 2006-06-13 CN CN2010101454183A patent/CN101808215B/en not_active Expired - Fee Related
- 2006-06-13 CN CN201010145399A patent/CN101808214A/en active Pending
- 2006-06-13 CN CN2010101453706A patent/CN101808212B/en not_active Expired - Fee Related
- 2006-06-13 ES ES10158779T patent/ES2432020T3/en active Active
- 2006-06-13 EP EP20100158809 patent/EP2200300B1/en not_active Not-in-force
- 2006-06-13 WO PCT/JP2006/311841 patent/WO2006137292A1/en active Application Filing
- 2006-06-13 EP EP20100158803 patent/EP2200299B1/en not_active Expired - Fee Related
- 2006-06-13 CN CN2010101453833A patent/CN101808213B/en not_active Expired - Fee Related
- 2006-06-13 EP EP20060766652 patent/EP1906663B1/en not_active Expired - Fee Related
- 2006-06-13 EP EP20100158779 patent/EP2200297B1/en not_active Expired - Fee Related
- 2006-06-13 CN CN201010145398.XA patent/CN101808245B/en not_active Expired - Fee Related
- 2006-06-13 US US11/920,937 patent/US8401368B2/en active Active
- 2006-06-13 KR KR1020097020218A patent/KR100967503B1/en not_active IP Right Cessation
- 2006-06-13 EP EP20100158792 patent/EP2200298B1/en not_active Not-in-force
- 2006-06-13 ES ES06766652T patent/ES2384112T3/en active Active
- 2006-06-13 KR KR1020097005603A patent/KR100947153B1/en not_active IP Right Cessation
- 2006-06-13 EP EP20100158811 patent/EP2200301B1/en not_active Not-in-force
-
2010
- 2010-03-31 US US12/798,235 patent/US20100220973A1/en not_active Abandoned
- 2010-03-31 US US12/798,178 patent/US9319654B2/en not_active Expired - Fee Related
- 2010-03-31 US US12/798,176 patent/US20100195984A1/en not_active Abandoned
- 2010-03-31 US US12/798,225 patent/US20100202760A1/en not_active Abandoned
- 2010-03-31 US US12/798,175 patent/US20100195983A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4890168A (en) * | 1987-05-20 | 1989-12-26 | Sanyo Electric Co., Ltd. | Program scan apparatus for VTR utilizing picture-in-picture display |
US5923627A (en) * | 1995-08-21 | 1999-07-13 | Matsushita Electric Industrial Co., Ltd. | Optical disc for coordinating the use of special reproduction functions and a reproduction device for the optical disk |
US6553179B1 (en) * | 1995-08-21 | 2003-04-22 | Matsushita Electric Industrial Co., Ltd. | Optical disc for coordinating the use of special reproduction functions and a reproduction device for the optical disc |
US5852474A (en) * | 1995-08-24 | 1998-12-22 | Hitachi, Ltd. | Television receiver including playback mode for storing screen image information for predetermined time to reproduce and its method |
US6160590A (en) * | 1997-03-31 | 2000-12-12 | Sanyo Electric Co., Ltd. | Video signal processing circuit inhibiting display of distorted images |
US20040131332A1 (en) * | 1998-11-16 | 2004-07-08 | Wilson Patricia E.M. | Method and device for recording real-time information |
US7366396B2 (en) * | 2001-07-07 | 2008-04-29 | Lg Electronics Inc. | Method and apparatus of recording/reproducing multi-channel stream |
US20030184679A1 (en) * | 2002-03-29 | 2003-10-02 | Meehan Joseph Patrick | Method, apparatus, and program for providing slow motion advertisements in video information |
US20040168185A1 (en) * | 2003-02-24 | 2004-08-26 | Dawson Thomas Patrick | Multimedia network picture-in-picture |
US20060078301A1 (en) * | 2004-06-18 | 2006-04-13 | Wataru Ikeda | Playback apparatus, program, playback method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023049914A1 (en) * | 2021-09-27 | 2023-03-30 | Bytedance Inc. | Method, device and medium for video processing |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8401368B2 (en) | Video data reproducing apparatus, video data generating apparatus and recording medium | |
US6512552B1 (en) | Subpicture stream change control | |
US8736698B2 (en) | Video synthesizing apparatus and program | |
JP2010161809A (en) | Video synthesis device, recording medium, program, and video data generating device | |
JPH0945007A (en) | Recording medium, menu stream generating apparatus and recorded medium reproducing apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |