JP2009017453A - Playlist generating apparatus and playlist reproduction apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a playlist generating apparatus for generating a user-preferable playlist by combining an arbitrarily created playlist independent of motion picture feature data with a playlist generated by the motion picture feature data. <P>SOLUTION: The present invention relates to a playlist generating apparatus including a digest playlist generating means 2 for generating digest playlist data 7 by determining such a reproduction interval as to be settled within a playback time instructed by a user based on motion picture feature data 6 and a user playlist generating means 3 for fetching user playlist data 8 created while arbitrarily setting the reproduction interval thereto, wherein a user digest playlist generating means 4 is included which generates user digest playlist data 9 combining the reproduction interval information of the digest playlist data 7 and the reproduction interval information of the user playlist data 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a playlist generating apparatus applied to a playback apparatus that plays back a broadcast program recorded and stored in an HDD or the like, and more particularly, to a recorded title when a playback ratio is instructed to play back a recorded title. Using the video feature data obtained by analyzing the characteristics of the video information and audio information of the video data, the playback section information having the playback time corresponding to the playback ratio is generated as a playlist, and the video data along the playlist is generated. The present invention relates to a technique that is effective when applied to a playlist generating apparatus applied to a reproducing apparatus capable of reproducing.

  In TV program recording / playback apparatuses such as DVD / HDD recorders that have become popular in recent years, video feature data obtained by analyzing the characteristics of video information and audio information of video data of recorded titles is used as a function for playback of recorded titles. A playback function called highlight playback or digest playback is implemented.

  For example, if the user wants to view a recorded title recorded for 60 minutes in 10 minutes, the function generates a playback section corresponding to 10 minutes as a playlist, and plays the recorded title along the playlist. Is. For example, in sports watching programs such as soccer and baseball, this function can be used by generating a playlist for that part by determining that the voice is exciting and playing only the playback section of the playlist. Only the interesting part of the recorded title can be viewed.

As a method of analyzing moving image data and a method of determining a playback section from a moving image feature data format or moving image feature data when realizing this function, for example, a digest creation device disclosed in Japanese Patent Laid-Open No. 2006-332720 (Patent Document 1). Proposed.
JP 2006-332720 A

  However, the moving image feature data obtained by analyzing the moving image data of the recorded title is extracted based on, for example, the sound excitement and the image pattern of the video, and matches the portion that the viewing user finds interesting in the recorded title. Not always. Moreover, even if the video feature data is used, a user-preferred playlist generation such as playing a player who is supporting the player has not been generated. There is a problem.

  Therefore, an object of the present invention is to arbitrarily create a playlist generated by moving image feature data obtained from analysis of conventional video information and audio information without depending on moving image feature data created by a user who has already viewed the program. Another object of the present invention is to provide a playlist generation apparatus that generates playlists that are user-preferred by combining the playlists that have been played.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  The present invention is determined based on the moving image feature data holding the characteristics of the video / audio information about the moving image data to be reproduced by the play list, within the reproduction time designated by the user or from the reproduction ratio designated by the user. A digest playlist generating means for generating a digest playlist by determining a playback section in the video data so as to be within a playback time, and a user playlist created by arbitrarily setting the playback section in the video data A playlist generation device having user playlist generation means to be captured, and a playlist playback device having the playlist generation device, wherein the playback section information of the digest playlist and the playback section information of the user playlist are combined User digest playlist It is characterized in that it has a user digest playlist generating means for generating a.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to the present invention, it is possible to generate a user digest playlist in which a user playlist that does not depend on video feature data is incorporated and combined with a digest playlist generated using the video feature data obtained by analyzing the video data. Therefore, it is possible to generate a playlist including a playback section of a user playlist that is subjectively created from the user's viewpoint while including a characteristic playback section unique to individual video data based on video feature data in the prior art. It is possible to enjoy different digest playbacks that are different for each user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

<Embodiment 1>
FIG. 1 is a block diagram showing a configuration of a user digest playlist generation apparatus according to Embodiment 1 of the present invention. In FIG. 1, a user digest playlist generating apparatus includes a playlist generation information setting unit 1, a digest playlist generation unit 2, a user playlist generation unit 3, a user digest playlist generation unit 4, playlist generation information 5, and moving image characteristics. It consists of data 6, digest playlist data 7, user playlist data 8, and user digest playlist data 9.

  The playlist generation information setting means 1 is an input setting interface unit, from the user about the information specifying the video data of the recorded title to be the playlist generation target, the playback ratio, and the user playlist data 8 to be captured. , The moving image feature data 6 generated by analyzing the moving image data of the recorded title that is the playlist generation target is specified, and the input information and the specified information are identified as the playlist generation information 5. Save as.

  The digest playlist generating means 2 generates a playlist having a playback time corresponding to the playback ratio by using the playback ratio acquired from the playlist generation information 5 and the information specifying the moving image feature data 6, and digests the digest. Save as playlist data 7. The user playlist generation means 3 takes in the user playlist data 8 based on the information specifying the user playlist data 8 acquired from the playlist generation information 5 and makes it a user playlist, and sends it to the user digest playlist generation means 4. .

  The user digest playlist generating unit 4 generates one playlist by combining the user playlist sent from the user playlist generating unit 3 and the digest playlist data 7 and stores the playlist as user digest playlist data 9. Each of the above means may be realized by a circuit or the like, or may be realized as software and processed by a CPU.

  Next, the operation of the user digest playlist generating apparatus according to this embodiment will be described. First, in the user digest playlist generating apparatus according to the present embodiment, moving image data that is a recorded title is stored in a storage device such as an HDD, and the moving image data is analyzed during recording, after recording, or at the time of recording. Thus, it is assumed that the moving image feature data 6 in which the video information and audio information features of the moving image data are converted into data has been created.

  In addition, although it does not mention here about the analysis method of moving image data, and the specific method of determining a reproduction | regeneration area from a moving image feature data format or moving image feature data, for example, the prior art as described in Patent Document 1 is used. be able to. Assume that the moving image data and the moving image characteristic data 6 obtained by the analysis are easily associated with similarities with different extensions of file names.

  The user playlist data 8 includes a plurality of pieces of reproduction section information having a pair of reproduction start and reproduction end time information as reproduction sections. In the present embodiment, a text is written in the description format of the reproduction section information. Use the format. The description format may be any format, such as a binary format, as long as it can indicate time information regarding the playback section.

  The user playlist data 8 can be created by, for example, using a method in which the user inputs text while viewing the playback video of the video data, or pointing a bookmark with a function of a playback device or the like during viewing. It may be in the form of receiving device support such that the user playlist data 8 is created based on bookmark information by a playback device or the like. Further, it may be created on the user digest playlist generation device or may be created by another playback device or the like.

  The created user playlist data 8 has a data format that can be moved via a network or an external interface using a flash memory medium, and can be stored in, for example, an internal HDD of a user digest playlist generation device. Yes, the user digest playlist generation apparatus can convert the playlist format 8 to be handled in the apparatus and use it when the user playlist data 8 created by another playback device or the like is captured.

  The user can browse the moving image data stored in the storage device such as the built-in HDD of the user digest playlist generating device and the list of the user playlist data 8 via the display device, and generate the playlist from the moving image data list. Select the target video data and set the playback ratio for that video data. Here, the playback ratio is information for instructing generation of a playlist having playback section information of 30 minutes when a playback ratio of 50% is specified for moving picture data having a recording time of 1 hour, for example. In this embodiment, the playback ratio is specified as a percentage, but a playback time may be directly specified.

  For the selected moving image data, the moving image feature data 6 generated by moving image data analysis is also automatically selected. Further, user playlist data 8 to be adopted for the selected moving image data is also selected. Here, information for specifying the selected moving image data, moving image feature data 6 and user playlist data 8 and information on the reproduction ratio are stored as playlist generation information 5 by the playlist generation information setting means 1.

  In the digest playlist generating means 2, the playback section information corresponding to the playback rate using the video feature data 6 from the information specifying the video feature data 6 acquired from the playlist generation information 5 and the playback rate information. Is generated and stored as digest playlist data 7. Next, in the user playlist generation means 3, the user playlist is fetched from the user playlist data 8 according to the information specifying the user playlist data 8 obtained from the playlist generation information 5, and sent to the user digest playlist generation means 4. .

  The user digest playlist generating means 4 processes the user playlist sent from the user playlist generating means 3 and information related to the playback section of the digest playlist data 7 generated by the digest playlist generating means 2 in combination. A playlist having a playback section including a playback section as a new playback section is generated and stored as user digest playlist data 9.

  The created user digest playlist data 9 includes the playback section information of the digest playlist data 7 generated in association with the video information and audio information of the video data itself by using the video feature data 6, and the video data itself. This is a playlist incorporating reproduction section information of the user playlist data 8 that is arbitrarily created without depending on the video information and audio information.

  As described above, the user digest playlist data 9 including the playback section information of the various user playlist data 8 that is subjectively created by the user while including the characteristic playback section that is the excitement part unique to the moving image data is used for the user preference. It is possible to perform digest playback of typical moving image data.

<Embodiment 2>
In the second embodiment of the present invention, the function of the user digest playlist generating apparatus of the first embodiment is applied to a digital video recording / reproducing apparatus such as a DVD / HDD recorder. FIG. 2 is a block diagram showing a hardware configuration of a digital video recording / playback apparatus to which the user digest playlist generation apparatus according to the present embodiment is applied, and FIG. 3 is a block diagram of the user digest playlist generation apparatus according to the present embodiment. It is a block diagram which shows a functional structure.

  In FIG. 2, a digital video recording / playback apparatus includes a TV tuner circuit 10, an MPEG encoder 11, an MPEG decoder 12, a display control unit 13, a CPU 14, an input unit 15, a storage device 16, a removable disk drive 17, an external memory IF 18, a network controller. 19. Further, there are a monitor 20, a network 21, and a remote controller 22 as peripheral connection devices.

  The TV tuner circuit 10 is a base station or relay station of a television station (not shown), a component that receives a television broadcast from a satellite wave, or a substrate that includes the component or circuit. The present invention does not specify a broadcasting system such as digital broadcasting or analog broadcasting.

  The MPEG encoder 11 is a component for encoding video / audio data into moving image data in the MPEG format, or a circuit or a board including the component. Further, the MPEG decoder 12 is encoded in the MPEG format, the program content received by the TV tuner circuit 10, the recording medium inserted in the storage device 16 and the removable disk drive 17, and the recording medium connected to the external memory IF 18. Is a component that decodes the moving image data recorded in the network 21 and the moving image data received from the network 21, or a substrate that includes the components and circuits.

  The display control unit 13 is a component that outputs moving image data decoded by the MPEG decoder 12, a list of moving image data stored in the storage device 16, or a circuit or a board including the component. A CPU (Central Processing Unit) 14 is a component that controls each hardware device and processes software. The input unit 15 is a part that receives infrared rays or radio waves from the keyboard / mouse, the remote controller 22, or its parts, circuits, and peripheral circuits. The input result is processed by the CPU 14, selection of processing contents, data setting, etc. Used for.

  The storage device 16 is, for example, an HDD, and is used for storing moving image data of recorded program content, moving image characteristic data obtained by analyzing moving image data, a playlist, and the like. The removable disk drive 17 is a drive that reads / writes data from / to a storage medium such as a DVD-ROM / RAM, and these storage mediums can be used as storage / reading destinations of moving image data and acquisition destinations of user playlists. .

  The external memory IF 18 is an external interface portion such as a portable non-volatile memory such as a flash memory, and can be used for obtaining a user playlist via the flash memory, for example. The network controller 19 can be used to acquire moving image data and user playlist via the network 21.

  Next, the operation content of the digital video recording / playback apparatus to which the user digest playlist generation apparatus according to the present embodiment is applied will be described.

  First, in the playlist generation information setting process 30 in FIG. 3, information for specifying the moving image data to be reproduced, the reproduction ratio, and the user playlist data 8 to be used is set. At that time, the CPU 14 displays a list of moving image data and user playlist data 8 recorded in the storage device 16 on the monitor 20 via the display control unit 13. For example, the user uses the remote controller 22 to select moving image data to be reproduced, set a reproduction ratio, and select user playlist data 8 to be used. In the playlist generation information setting process 30, information selected and set by the user is stored as playlist generation information 5 in the storage device 16 or the like so that it can be used in other processes.

  An example of the storage format of the playlist generation information 5 and specific data is shown in FIG. In FIG. 4, a moving image data file 40 is a file name of moving image data to be reproduced. The recording time 41 is a recording time of moving image data. The reproduction ratio 42 is a value indicating what percentage is reproduced with respect to the recording time of the moving image data. The moving image feature file 43 is a file name of the moving image feature data 6 generated by analyzing the moving image data of the moving image data file 40. When the file name of the moving image data file 40 is determined, the extension is changed and automatically determined. . The user playlist file 44 is the file name of the user playlist data 8 selected by the user.

  Next, in the digest playlist generation process 31 of FIG. 3, a playlist is generated based on the information of the playlist generation information 5 and stored as digest playlist data 7. In the example of FIG. 4, it is determined from the value of 14 minutes of the recording time 41 and the value of 50 (%) of the playback ratio 42 that it is necessary to generate a playlist that makes the total of the playback sections 7 minutes. A play list is generated by selecting a playback section from the moving image feature data 6 specified in the file 43 so that the total of the playback sections is 7 minutes, and is stored as digest playlist data 7. An example of the reproduction section information of the generated digest playlist data 7 is shown in FIG. In FIG. 5, the playback order 50 indicates the playback order of each playback section, the start time 51 indicates the playback start time of each playback section, and the end time 52 indicates the playback end time of each playback section.

  Next, in the user playlist generation process 32 of FIG. 3, the user playlist data 8 is taken in based on the information of the playlist generation information 5 to generate a user playlist, which is sent to the user digest playlist generation process 33. A file specified by the user playlist file 44 in the example of FIG. 4 is taken in while being converted from the user playlist data 8 into the same data structure as the digest playlist data 7 shown in the example of FIG. This is sent to the user digest playlist generation process 33 of the process.

  An example of the description format and specific data of the user playlist data 8 to be captured is shown in FIG. The content described between the <USER_PLAY_LIST> tag in the row 601 and the </ USER_PLAY_LIST> tag in the row 614 is the list information of the playback section of the user playlist. One playback section is from the <PLAY_AREA> tag to the </ PLAY_AREA> tag. In FIG. 6, three playback sections are described by the <PLAY_AREA> tags in the rows 602, 606, and 610.

  Also, the <START> tag and the <END> tag in the playback section are the time information of the playback section. Taking the playback section indicated by the <PLAY_AREA> tag in the row 602 as an example, the <START> tag and the <START in the row 603 The information described between the / START> tag represents the playback start time of the playback section, and the information described between the <END> tag and the </ END> tag in the row 604 is Represents the playback end time of the playback section.

  Next, in the user digest playlist generation process 33 in FIG. 3, the user digest playlist data 9 is generated by combining the digest playlist data 7 and the user playlist generated by the user playlist generation process 32.

  A generation example of the user digest playlist data 9 will be described with reference to FIG. In FIG. 7, time is plotted on the horizontal axis. The reproduction section information of the digest playlist data 7 in the example of FIG. 5 is illustrated as A1, A2, and A3 of the digest playlist 70 in FIG. In the playlist generation information 5 in the example of FIG. 4, a playback ratio of 50% is specified as the playback ratio 42 for the moving picture data of the recording time 14 shown in the recording time 41, so that A1, A2, and A3 The total value of the reproduction section shown is 7 minutes.

  In the user playlist 71, information on the playback section indicated by the <PLAY_AREA> tag in the rows 602, 606, and 610 in the playlist indicated by the <USER_PLAY_LIST> tag in the row 601 in the example of FIG. 7, B1, B2, and B3 of the user play list 71 in FIG.

  The playback section of the user digest playlist 72 is created by simply combining the digest playlist 70 and the playback section of the user playlist 71. Therefore, C1 which is the playback section of the user digest playlist 72 is inherited by A1, and C2 is inherited by B1. Further, C3 forms a playback section as a section belonging to at least one of A2 and B2, and C4 has the playback section of A3 as C4 as it is because the playback section of B3 does not exceed the playback section of A3. The user digest playlist generation process 33 stores a playlist having a playback section as shown in the user digest playlist 72 generated in this way as user digest playlist data 9.

  Thereafter, in the playlist reproduction process 34 of FIG. 3, the CPU 14 of FIG. 2 sequentially decodes the moving image data stored in the storage device 16 or the like by the MPEG decoder 12 according to the reproduction section information of the user digest playlist data 9. By displaying on the monitor 20 via the display control unit 13, digest reproduction by the user digest playlist data 9 is realized.

  As described above, in an actual device such as a digital video recording / playback apparatus, a variety of user playlists that are subjectively created by the user while including a characteristic playback section that is a rising portion unique to moving image data, as in the first embodiment. It is possible to perform digest playback of user-preferred moving image data using user digest playlist data 9 including playback section information of data 8.

<Embodiment 3>
In Embodiment 3 of the present invention, in a digital video recording / playback apparatus to which the user digest playlist generation apparatus in Embodiment 2 is applied, playback at a playback time determined by a playback ratio specified by the user is performed by user digest playlist data. 9 has means for realizing the digest reproduction according to 9.

  In the example of the playlist generation information 5 in FIG. 4, the reproduction time of the user digest playlist data 9 in the second embodiment is 7 minutes because the instruction by the user is the designation of the reproduction ratio 50% for the moving image data of 14 minutes. Although the user digest playlist data 9 finally generated is supposed to be as shown in the user digest playlist 72 of FIG. 7, the total playback time of the playback sections C1, C2, C3, and C4 is 10 minutes. ing. That is, the user digest playlist data 9 exceeding the playback time instructed by the user is generated by capturing the user playlist data 8.

  Therefore, in the present embodiment, in the function of the user digest playlist generation apparatus shown in FIG. 3 of the second embodiment, as shown in FIG. 8 between the user digest playlist generation process 33 and the playlist reproduction process 34. In addition, two processes of a reproduction time determination process 80 and a digest playlist regeneration process 81 are added.

  In the playback time determination process 80, playback section information of the user digest playlist data 9 generated by the user digest playlist generation process 33 is determined from the designation of the recording time 41 and the playback ratio 42 in the playlist generation information 5 of FIG. It is determined whether or not the playback time is within the playback time. If the playback time is within the playback time, the process proceeds to the playlist playback process 34, and digest playback by the user digest playlist data 9 is executed. If it is determined that it does not fall within the reproduction time, the moving picture feature file 43 in the playlist generation information 5 of FIG. 4 is designated and the process proceeds to the digest playlist regeneration process 81.

  In the digest playlist regeneration process 81, the moving picture feature data 6 specified by the moving picture feature file 43 specified in the playing time determination process 80 is used to obtain the total playback section time of the current digest playlist data 7. New digest playlist data 7 having a short total time is generated and overwritten. Here, the total time less than the total time of the playback section held by the current digest playlist data 7 is, for example, when the total time of the playback section held by the current digest playlist data 7 is 7 minutes. This means that new digest playlist data 7 is generated using the feature data 6 for a total duration of 6 minutes. Thereafter, the process is returned to the user digest playlist generation process 33, and the process is continued using the new digest playlist data 7.

  The user in the user digest playlist generation processing 33 when the total time of the playback section of the digest playlist data 7 generated by the processing in the playback time determination processing 80 and the digest playlist regeneration processing 81 reaches 4 minutes. A generation example of the digest playlist data 9 will be described with reference to FIG.

  In FIG. 9, the digest playlist data 7 generated by the digest playlist regeneration process 81 with the total duration of the playback section being 4 minutes is shown as a digest playlist 90. The user playlist 91 remains the same value as the user playlist 71 in FIG. 7 of the second embodiment. By performing a combination process similar to the example in FIG. 7 of Embodiment 2 for the playback sections of the digest playlist 90 and the user playlist 91, a user digest playlist 92 having a total playback section time of 7 minutes is generated. Thus, the user digest playlist data 9 having the target reproduction time can be generated. Thereafter, in the playback time determination process 80, since it is determined that the playback time of the user digest playlist data 9 is within the playback time specified by the user, the process proceeds to the playlist playback process 34.

  As described above, even in the digest playback by the user digest playlist data 9 generated by combining the digest playlist data 7 and the user playlist data 8, the digest playback satisfying the playback time designated by the user can be performed.

<Embodiment 4>
The fourth embodiment of the present invention is a digital video recording / playback apparatus to which the user digest playlist generation apparatus according to the third embodiment is applied, in the case where two or more user playlists are further imported, or the playback section information of the user playlist The present invention relates to a play list generation method and a reproduction method using a user digest play list in the case where various information is added and expanded.

  First, the process in the case of taking in two or more user playlist data 8 in the user playlist generation process 32 of FIG. 3 will be described. For example, a case where two user playlist data 8 are captured and a user playlist for processing is generated will be described with reference to FIG.

  In FIG. 10, the reproduction section information of two user playlist data 8 to be captured is illustrated as a user playlist A100 and a user playlist B101. As a method for generating a user playlist for processing from these two user playlist data 8, two methods are shown below.

  The first is a method of adopting only a playback section where two user playlist data 8 overlap as a playlist. In FIG. 10, with respect to the playback sections of the user playlist A100 and the user playlist B101, the overlapping part of the playback sections of A2 and B2 is adopted as C1, and the overlapping part of the playback sections of A3 and B3 is adopted as C2. A user playlist (AND) 102 is generated as a user playlist.

  The second is a method of adopting all playback sections of the two user playlist data 8 as playlists. In FIG. 10, with respect to the playback sections of the user playlist A100 and the user playlist B101, the playback section that continues from A1 to B1 is D1, the playback section that combines A2 and B2 is D2, and playback that combines A3 and B3 The section is adopted as D3, and a user playlist (OR) 103 is generated as a user playlist for processing. Note that it is possible to freely determine which of the two user playlist generation methods described above is used, for example, a method determined by the user.

  Next, a playlist generation method in the case where priority information is added to each playback section in the user playlist data 8 to be captured in the user playlist generation process 32 of FIG. 3 will be described with reference to FIGS. 11 and 12. .

  FIG. 11 is a diagram illustrating an example of a description format and specific data when priority information is added to the user playlist data 8. In FIG. 11, in addition to the basic play list description format described in FIG. 6 of the second embodiment, the priority, which is the priority value, can be described as a percentage between the <PRIORITY> tag and the </ PRIORITY> tag. Has been expanded. For example, a value of 70 described in the <PRIORITY> tag in the row 1105 indicates that the importance of the playback section indicated by the <PLAY_AREA> tag in the row 1102 is set to 70%.

  FIG. 12 is a diagram showing an example in which user digest playlist data 9 is generated from digest playlist data 7 and user playlist data 8 having priority information. In the user playlist 121, the three playback sections shown in the example of FIG. 11 are illustrated as playback sections of B1, B2, and B3, and the importance of each playback section is also illustrated. The digest playlist 120 illustrates an example of a playback section when certain moving image data is designated at a playback rate of 50%.

  Here, when a playlist is generated by combining the playback sections of the digest playlist 120 and the user playlist 121, the digest playlist 120 is generated with a playback ratio designation of 50%. Only B1 and B3, which are playback sections having the above importance levels, are adopted.

  As a result, in the user digest playlist 122, A1 overlaps with C1, B1 overlaps with C2, and B2 overlaps with A2, but it is not adopted because the importance of the playback section of B2 is 20%, and only the playback section of A2 is used. A user digest playlist 122 in which A3 including B3 is C4 is generated in C3. By creating a correlation between the specified value (%) of the reproduction ratio and the importance (%) of the priority information, the method for generating the user digest playlist data 9 can be changed.

  Next, a method of generating playlist data when character information is added to each playback section in the user playlist data 8 to be captured in the user playlist generation processing 32 of FIG. 3 will be described with reference to FIG.

  FIG. 13 is a diagram showing an example of a description format and specific data when character information is added to the user play list data 8. In FIG. 13, in addition to the basic playlist description format described in FIG. 6 of the second embodiment, the character information about the playback section is extended between the <NARRATOR> tag and the </ NARRATOR> tag. is doing. The character information described in the <NARRATOR> tag on the line 1305 gives the character information to the playback section indicated by the <PLAY_AREA> tag on the line 1302.

  The contents described between the <NAVI> tag and the </ NAVI> tag in the line 1306 between the <NARRATOR> tag in the line 1305 and the </ NARRATOR> tag in the line 1310 are the contents after the playback of the playback section starts. The timing at which provision of character information is started is shown. In the example of FIG. 13, provision of character information is started one minute after the reproduction of the reproduction section is started. The character information here is the content described as a character string between the <CAPTION> tag on line 1307 and the </ CAPTION> tag on line 1309.

  If the description information in these <NARRATOR> tags is taken in by the user playlist generation process 32 and is continuously held in the user digest playlist generation process 33, in the reproduction process of the playlist reproduction process 34, < The character string of the line 1308 between the CAPTION> tag and the </ CAPTION> tag of the line 1309 is displayed as, for example, subtitles on the screen on which the moving image data is visualized from the time indicated by the <NAVI> tag of the line 1306. It becomes possible to make it. For example, when a playback device has a voice conversion function of a character string, it is possible to adopt a method in which text information is converted into voice and mixed with voice information of moving image data and output.

  Next, a playlist generation method in the case where information for controlling the playback order is added to each playback section in the user playlist data 8 to be captured in the user playlist generation processing 32 of FIG. 3 will be described with reference to FIG. To do.

  FIG. 14 is a diagram showing an example of a description format and specific data when information for controlling the playback order of each playback section is added to the user playlist data 8. In FIG. 14, in addition to the basic playlist description format described in FIG. 6 of the second embodiment, information for controlling the playback order can be described between the <ORDER> tag and the </ ORDER> tag. It has been expanded. The value described between the <ORDER> tag and the </ ORDER> tag in the row 1403 indicates the order in which the playback section indicated by the <PLAY_AREA> tag in the row 1402 is played back.

  The information of these <ORDER> tags is taken in by the user playlist generation process 32 and used during the reproduction section alignment process in the user digest playlist generation process 33, so that the user in the reproduction process of the playlist reproduction process 34 Regardless of the time series described in the playlist data 8, playback with rearranged playback sections becomes possible.

  Next, with reference to FIGS. 15 and 16, a description will be given of a playlist generation method in the case where information on a section not to be reproduced is added to the user playlist data 8 to be imported in the user playlist generation process 32 of FIG.

  FIG. 15 is a diagram illustrating an example of a description format and specific data in the case of adding information on a section not to be reproduced to the user play list data 8. In FIG. 15, in addition to the basic playlist description format described in FIG. 6 of the second embodiment, it is extended so that a non-playback section can be specified between the <NOT_PLAY_AREA> tag and the </ NOT_PLAY_AREA> tag. Yes. Between the <NOT_PLAY_AREA> tag on the line 1506 and the </ NOT_PLAY_AREA> tag on the line 1509, the <END> tag on the line 1508 from the time described between the <START> tag and the </ START> tag on the line 1507 To </ END> tag, the time information of the section that is not reproduced until the time described between the tags is shown.

  FIG. 16 is a diagram showing an example in which user digest playlist data 9 is generated from digest playlist data 7 and user playlist data 8 having information on a section not to be reproduced. In the user play list 161, reproduction (not performed) section information of the user play list data 8 shown in FIG. 15 is illustrated. Here, B2 corresponds to a non-reproducing section indicated by <NOT_PLAY_AREA> in the row 1506.

  When the user playlist 161 is to be combined with the digest (not) section of the digest playlist 160 to generate the user digest playlist 162, A1 becomes C1, B1 becomes C2, but B2 does not play. As shown, the playback section excluding the part where B2 overlaps the playback section of A2 is C3, and further, a user digest playlist 162 in which A3 including B3 is C4 is generated.

  As described above, by describing the <NOT_PLAY_AREA> tag, it is possible to describe the section information that is not reproduced, thereby generating the user digest playlist data 9 excluding the sections that are not to be reproduced.

  Next, a playlist generation method when keyword information is added to each playback section in the user playlist data 8 to be captured in the user playlist generation process 32 of FIG. 3 will be described with reference to FIG.

  FIG. 17 is a diagram showing an example of a description format and specific data when adding keyword information to the user play list data 8. In FIG. 17, in addition to the basic playlist description format described in FIG. 6 of the second embodiment, the keyword information about the playback section is extended between the <KEYWORD> tag and the </ KEYWORD> tag. is doing. The contents described between the <KEYWORD> tag and the </ KEYWORD> tag in line 1705 are keyword information related to the playback section indicated by the <PLAY_AREA> tag in line 1702.

  If the description information in these <KEYWORD> tags is fetched by the user playlist generation process 32 and is continuously held by the user digest playlist generation process 33, the playlist playback is performed for the playback section selected by the keyword designation by the user. Digest reproduction in the process 34 can be performed.

  Finally, when a plurality of user playlist data 8 is captured in the user playlist generation process 32 of FIG. 3, it is not a method of simply adopting only overlapping playback sections or adopting all playback sections, A playlist generation method in the case where control is performed while holding the number-of-duplication information for each overlapping region of the playback sections will be described with reference to FIG.

  FIG. 18 is a diagram illustrating an example of a case where the number of reproduction section duplication information is held when a plurality of user playlist data 8 is taken in and user playlist data 8 for processing is generated. In FIG. 18, the user play list data 8 to be captured is three of the user play list A 180, the user play list B 181 and the user play list C 182. The user playlist data 8 for processing generated from these three user playlists is shown as a user playlist T183.

  The playback section T1 of the user play list T183 is a succession of the playback section of A1, and does not overlap with other playback sections, so the number of overlaps is 1. Here, the number in parentheses represents the number of times of duplication. Similarly, T2 takes over the playback section of B1 as it is, and the number of overlaps is 1. On the other hand, duplication occurs in each of the playback sections of A2, B2, and C1, and is formed as three playback sections of T3, T4, and T5 on the user playlist T183. T3 takes over the playback section that did not overlap with other playback sections in A2, and the number of overlaps is 1. T4 corresponds to a playback section in which A2 and B2 overlap, and the number of overlaps is 2. Similarly, T5 corresponds to a section where B2 and C1 overlap, and the number of overlaps is 2.

  Further, in A3, B3, and C2, overlap occurs in each playback section, T6 corresponds to a playback section in which A3, B3, and C2 overlap, and the number of overlaps is 3. In T7, the playback section that did not overlap with the other playback sections in A3 is taken over as it is.

  The information on the number of times of duplication held in the user playlist T183 is specified, for example, to generate the user playlist data 8 for processing from the reproduction section selected by the three user playlist data 8 by the user. In this case, only the reproduction section of T6 corresponding to the number of overlaps of 3 or more can be used as a method of adopting as the user playlist data 8.

  Note that the methods for generating the user playlist data 8 and the user digest playlist data 9 described in the present embodiment can be used in combination.

  As described above, when the user digest playlist data 9 is generated, a plurality of user playlist data 8 is taken in, and the playback section is determined more flexibly based on the priority of each playback section, the number of times of duplication, keyword information, and the like. The user digest playlist data 9 can be generated. Furthermore, by adding information other than information related to the playback section, such as character information, to each playback section, it becomes possible to generate a wide variety of user digest playlist data 9, and digest playback of video data more user-preferred Is possible.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  INDUSTRIAL APPLICABILITY The present invention can be used in a playlist generating apparatus applied to a reproducing apparatus that reproduces a broadcast program recorded and stored in an HDD or the like. In particular, in the case of reproducing a recorded title by instructing a reproduction ratio. , Using the video feature data that analyzed the video information and audio information characteristics of the video data of the recorded title, generate playback section information with a playback time that matches the playback ratio as a playlist, and follow the playlist Thus, the present invention can be used in a playlist generation device applied to a playback device that can play back moving image data.

It is a block diagram which shows the structure of the user digest playlist production | generation apparatus which is Embodiment 1 of this invention. It is a block diagram which shows the hardware constitutions of the digital video recording / reproducing apparatus in Embodiment 2 of this invention. It is a block diagram which shows the functional structure of the user digest playlist production | generation apparatus in Embodiment 2 of this invention. It is a figure which shows the example of the preservation | save format of playlist production | generation information in Embodiment 2 of this invention, and specific data. It is a figure which shows the example of the reproduction area information of digest playlist data in Embodiment 2 of this invention. It is a figure which shows the example of a description format and specific data of the user play list data in Embodiment 2 of this invention. It is a figure which shows the production | generation example of the user digest play list data in Embodiment 2 of this invention. It is a block diagram which shows the functional structure of the user digest playlist production | generation apparatus in Embodiment 3 of this invention. It is a figure which shows the example of a production | generation of user digest playlist data in Embodiment 3 of this invention. It is a figure which shows the example of a production | generation in the case of taking in the two user playlist data in Embodiment 4 of this invention, and producing | generating the user playlist for a process. It is a figure showing the example of the description format in the case of adding priority information to the user play list data in Embodiment 4 of this invention, and specific data. It is a figure showing the example in the case of producing | generating the user digest playlist data in Embodiment 4 of this invention. It is a figure showing the example of the description format in the case of adding character information to the user play list data in Embodiment 4 of this invention, and specific data. It is a figure showing the example of a description format in the case of adding the information which controls the reproduction | regeneration order of each reproduction | regeneration area to the user play list data in Embodiment 4 of this invention, and specific data. It is a figure showing the example of the description format in the case of adding the information of the area which is not reproduced | regenerated to the user play list data in Embodiment 4 of this invention, and specific data. It is a figure showing the example in the case of producing | generating the user digest playlist data in Embodiment 4 of this invention. It is a figure showing the example of the description format in the case of adding keyword information to the user play list data in Embodiment 4 of this invention, and specific data. It is a figure showing the example in the case of hold | maintaining the duplication frequency information of the reproduction area in Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Playlist production | generation information setting means, 2 ... Digest playlist production | generation means, 3 ... User playlist production | generation means, 4 ... User digest playlist production | generation means, 5 ... Playlist production | generation information, 6 ... Movie feature data, 7 ... Digest Playlist data, 8 ... user playlist data, 9 ... user digest playlist data,
DESCRIPTION OF SYMBOLS 10 ... TV tuner circuit, 11 ... MPEG encoder, 12 ... MPEG decoder, 13 ... Display control part, 14 ... CPU, 15 ... Input part, 16 ... Storage device, 17 ... Removable disk drive, 18 ... External memory IF, 19 ... Network controller, 20 ... monitor, 21 ... network, 22 ... remote control.

Claims (6)

Within the playback time specified by the user or within the playback time specified by the user based on the video feature data holding the characteristics of the video / audio information for the video data to be played back by the playlist A digest playlist generating means for generating a digest playlist by determining a playback section in the moving image data so as to fit in a user playlist, and a user playlist for taking in a user playlist created by arbitrarily setting the playback section in the moving image data A playlist generation device having generation means,
A playlist generating apparatus comprising user digest playlist generating means for generating a user digest playlist that combines playback section information of the digest playlist and playback section information of the user playlist. The playlist generation device according to claim 1,
When the total playback time of playback sections in the user digest playlist generated by the user digest playlist generation means exceeds the playback time determined from the playback time specified by the user or the playback rate specified by the user Then, the playback section in the video data is determined based on the video feature data so as to fall within the playback time specified by the user or within the playback time determined from the playback ratio specified by the user. A playlist generation apparatus characterized by regenerating a list. In the playlist generation device according to claim 1 or 2,
The user playlist generation means takes in a plurality of the user playlists and determines all the playback sections specified in the plurality of user playlists as playback sections, or specifies in the plurality of user playlists. A play list generating apparatus, wherein only a range that overlaps a playback section is determined as a playback section. The playlist generation device according to claim 3,
The user playlist generation means holds information on the number of overlaps for overlapping ranges of playback sections specified in the plurality of user playlists, and determines a playback section based on the information on the number of overlaps. A play list generation device characterized. In the playlist production | generation apparatus of any one of Claims 1-4,
In the user playlist, it is possible to describe, as additional information, the priority of the playback section or / and the keyword information about the playback section or / and the information of the section not played back and / or the playback order information of the playback section. The user playlist generation means and the user digest playlist generation means determine a playback section based on the additional information and generate the user digest playlist. A playlist reproduction device that has the playlist generation device according to any one of claims 1 to 5 and reproduces moving image data according to the user digest playlist generated by the playlist generation device,
In the user playlist, it is possible to describe, as additional information, character information related to a playback section and a timing at which the character information is used, and the playlist playback apparatus relates to a playback section in the user digest playlist. A playlist reproduction device characterized in that, based on the character information and information on the timing at which the character information is used, the character information is displayed simultaneously with video or converted into sound and output.

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