JP2010028651A - Identification model reconstruction apparatus, identification model reconstruction method, and identification model reconstruction program - Google Patents

Abstract

The present invention uses an identification model to accurately identify a digest portion of a desired sport event and a digest portion of the desired sport event in digest program data.
The present invention records relay program data, extracts and accumulates feature values, and uses the feature values together with the names of sports events to identify sports events and their digest parts in digest program data. By reconstructing the identification model, even if the angle for shooting the game is changed, the feature quantity extracted and accumulated from the plurality of relay program data with the changed angle together with the name of the desired sport item It is possible to reconstruct the identification model and reduce the degradation of the identification accuracy, and to use the identification model to accurately identify the digest part of the desired sport event together with the desired sport event in the digest program data. it can.
[Selection] Figure 12

Description

  The present invention relates to an identification model reconstruction device, an identification model reconstruction method, and an identification model reconstruction program, and is suitable for application to, for example, a program recording device capable of recording a program.

  The conventional playback system records the program so as to record program data of a program for relaying a game such as sports baseball or soccer (hereinafter also referred to as a sports event).

  Incidentally, in the following description, a program for relaying a sport-type game is also called a relay program, and program data of the relay program is also called relay program data.

  Also, the playback system analyzes temporally continuous multiple frames of image data, audio data, etc. included in the relay program data of the recorded relay program, and features such as feature quantities of the multiple frames of image data, audio data, etc. Extract the amount.

  Incidentally, in the following description, a feature amount extracted from image data of a plurality of frames is also called an image feature amount, and the program feature amount is combined with the image feature amount and other feature amounts extracted from audio data or the like. Also called.

  Furthermore, the playback system identifies the sport item of the game that was relayed by the relay program using the program feature amount of the relay program.

  Then, the reproduction system generates reproduction instruction data for instructing reproduction of the reproduction target portion of the relay program data with the reproduction rule corresponding to the identified sport event, and the reproduction target portion is generated from the relay program data according to the reproduction instruction data. Extract and play.

As a result, the playback system allows only a highlight scene such as a baseball home run scene or a soccer goal scene to be viewed in the recorded relay program (see, for example, Patent Document 1).
JP2007-60060 (Pages 17, 18, and 20)

  By the way, for the relay program, the installation position and shooting angle of the television camera for shooting the game are determined for each sporting event.

  The relay program is produced so that a similar scene can be filmed and relayed at almost the same angle even in a match held at different dates if the game is the same sport.

  For this reason, in a conventional program recording apparatus such as a playback system having such a configuration, for example, a manufacturer of a program recording apparatus uses a video collection amount of a broadcast program already broadcast to identify a sport item. An identification model has been built.

  And even if a conventional program recording apparatus records a relay program after construction of an identification model, it uses the identification model to use the image feature quantity of the recorded relay program and relays it on the relay program. Can identify the sporting event of the match.

  Here, in addition to the above-described relay program, various programs such as highlight scenes of a plurality of sporting events held during a predetermined period such as one day or one week are included in the sports program. There are also programs to broadcast together as a digest for each event.

  Incidentally, in the following description, a program for broadcasting various scenes of the game together as a digest for each sport item is also called a digest program.

  However, the digest program is produced so that a plurality of digests are broadcast in an order arbitrarily determined by the broadcasting station.

  For this reason, when a user views a digest program in real time during the broadcast time zone, the user may also view a digest of a sport event that is not preferred before watching the digest of the sport event of his / her favorite.

  However, with respect to the digest program, digests of individual sport events are generated by collecting various scenes of the game from a relay program that relays the sport event.

  For this reason, a conventional program recording apparatus records a digest program, and extracts image feature amounts from image data of a plurality of frames included in program data of the digest program (hereinafter also referred to as digest program data).

  Then, it is considered that the conventional program recording apparatus can identify the digest part of the sport item together with the sport item in the digest program data by using the image feature amount of the digest program using the identification model.

  That is, it is considered that the conventional program recording apparatus can identify which sport event the individual digest in the digest program is.

  In addition, based on the identification result, the conventional program recording apparatus may be able to view only the digest of the desired sport event by cutting out and playing back the digest portion of the desired sport event from the digest program data. It is done.

  However, for relay programs, for example, in order to better convey the realism of the game to the viewer, the angle for shooting the game together with the installation position of the television camera, the shooting angle, etc. (ie, the viewpoint for shooting the game) ) May be reviewed.

  As for the relay program, as a result of the review, the angle for shooting the game together with the installation position, shooting angle, number, etc. of the television camera may be changed so as to be different.

  By the way, for the relay program, if the angle for shooting the game is changed to a new angle, the period until the angle for shooting the game is reviewed and changed is changed. It is produced like shooting a game.

  In addition, when the angle for shooting a game is changed in any sporting event broadcast program, the angle of various scenes included in the digest of the sporting event is also different from the previous one for the digest program. Become a thing.

  For this reason, in the conventional program recording apparatus, when the angle is changed in a state where the identification model has already been constructed, the image feature amount of the digest program recorded after the change is used as the relay program used to construct the identification model. The image feature amount may be significantly different.

  In such a case, the conventional program recording apparatus uses the identification model to use the image feature amount of the digest program, so that the identification accuracy of the sport item is reduced, and the sport event is included together with the sport item in the digest program data. There was a problem that the digest part of could not be accurately identified.

  The present invention has been made in consideration of the above points, and an identification model reconstructing apparatus capable of accurately identifying a digest portion of a desired sport event together with the desired sport event in the digest program data using the identification model, An identification model reconstruction method and an identification model reconstruction program are proposed.

  In order to solve such a problem, in the present invention, the identification model reconstructing apparatus records the relay program data of the relay program that relays the sporting event, extracts the feature amount from the recorded relay program data, and The feature amount extracted from the relay program data is accumulated, and the accumulated feature amount is used together with the name of the corresponding sport item, and the digest type data of the digest program that sequentially broadcasts the digest of a plurality of sport items is used in the sport program. At the same time, an identification model for recognizing the digest portion of the digest of the sport event is reconstructed.

  Therefore, in the present invention, even if the angle for shooting a game in a relay program of a desired sport type is changed in the identification model reconstructing device, it is extracted from the relay program data of a plurality of relay programs with the changed angle. Thus, it is possible to reconstruct the identification model by using the feature amount accumulated in combination with the name of the desired sport item, and to reduce the decrease in the identification accuracy of the desired sport item in the digest program data.

  According to the present invention, in the identification model reconstructing apparatus, the relay program data of a relay program that relays a sport-type game is recorded, and the feature amount is extracted from the recorded relay program data and extracted from the relay program data The collected feature quantity is used together with the name of the corresponding sport item, and the digest type data of the digest program that sequentially broadcasts the digests of the plurality of sport types, together with the sport type, the sport type By reconstructing the identification model for identifying the digest part of the digest, even if the angle for shooting the game in the relay program of the desired sporting event is changed, Desired feature values extracted and stored from relay program data of other relay programs It can be used together with the name of a sport event to reconstruct the identification model to reduce the degradation of the identification accuracy of the desired sport event in the digest program data, and thus use the identification model to reduce the desired accuracy in the digest program data. It is possible to realize an identification model reconstruction device, an identification model reconstruction method, and an identification model reconstruction program that can accurately identify the digest portion of the desired sport event together with the sport event.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Embodiment (1-1) Circuit Configuration of Program Recording Device In FIG. 1, reference numeral 1 denotes a program recording device to which the present invention is applied as a whole. The program recording apparatus 1 has a recording / playback function for digital broadcast and analog broadcast programs, an electronic program guide (EPG) information acquisition function, and the like.

  The program recording apparatus 1 includes a control unit 2 having a microcomputer configuration, for example. The control unit 2 reads various programs such as basic programs and application programs stored in advance in the hard disk drive 3 or the non-volatile memory 4 via the bus 5.

  Then, the control unit 2 controls the entire program recording apparatus 1 according to various programs and executes predetermined arithmetic processing. The control unit 2 also executes various processes according to operation commands given from the input processing unit 6 according to the operation of the remote controller RM. Incidentally, in the following description, the remote controller RM is also referred to as a remote controller RM.

  As a result, the control unit 2 captures the digital broadcast signal received by the digital antenna 7 into the digital tuner unit 8 in accordance with the operation of the remote controller RM or the like.

  The digital tuner unit 8 extracts broadcast data of an arbitrary channel (for example, a channel designated by an operation of the remote controller RM) from the digital broadcast signal while taking in the digital broadcast signal from the digital system antenna 7.

  The digital tuner unit 8 records broadcast data extracted from the digital broadcast signal on the hard disk drive 3 as program data in units of programs via the stream buffer 9. In this way, the control unit 2 can record a digital broadcast program.

  Further, the control unit 2 takes in an analog broadcast signal received by the analog antenna 10 into the analog tuner unit 11 in accordance with an operation of the remote controller RM or the like.

  The analog tuner unit 11 extracts a broadcast signal of an arbitrary channel from the analog broadcast signal while taking in the analog broadcast signal from the analog antenna 10, and sends the extracted broadcast signal to the demodulator 12.

  The demodulator 12 generates an NTSC signal by demodulating the broadcast signal in accordance with the NTSC (National Television Standards Committee) standard, and sends the generated NTSC signal to an MPEG (Moving Picture Experts Group) encoder 13.

  The MPEG encoder 13 generates encoded data by encoding the NTSC signal in accordance with the MPEG standard, and records the generated encoded data on the hard disk drive 3 as program data in units of programs via the stream buffer 9. In this way, the controller 2 can also record analog broadcast programs.

  Further, the control unit 2 reads out program data from the hard disk drive 3 and sends it to the demultiplexer 14 via the stream buffer 9 in accordance with the operation of the remote controller RM.

  Here, the program data of the program is configured by time-division multiplexing video data of program video and audio data of program audio. Incidentally, the video data of the program video is composed of a plurality of frames of image data continuous in time.

  The program data of a program is configured, for example, when a caption called closed caption is superimposed on a program video, the text data of the caption is time-division multiplexed together with video data and audio data.

  Furthermore, the video data and audio data (or text data) constituting the program data includes time information for synchronizing the reproduction of the video data and audio data (or text data) along the time axis of the broadcast time of the program. Is added as a time code.

  The demultiplexer 14 separates the program data into video data and audio data (or text data) and sends them to an AV (Audio Visual) decoder 15.

  The AV decoder 15 decodes (that is, decodes) each of the video data and audio data (or text data), and then performs digital-analog conversion to generate a video signal and an audio signal (or text signal).

  Then, the AV decoder 15 sends the video signal (and text signal) to a GUI (Graphical User Interface) superimposer 16.

  The GUI superimposing unit 16 superimposes a graphics signal (or text signal) such as OSD (On Screen Display) on the video signal, and the video signal is externally connected to the program recording apparatus 1 via a video cable or the like. It is sent to the display 17.

  The AV decoder 15 sends the audio signal to a speaker 18 that is externally connected to the program recording apparatus 1 via an audio cable or the like.

  Thereby, the control unit 2 displays the program video based on the video signal on the display 17 and outputs the program audio based on the audio signal from the speaker 18 in accordance with the display of the program video. In this way, the control unit 2 can view the recorded program.

  Further, the digital tuner unit 8 sends broadcast data of an arbitrary channel extracted from the digital broadcast signal to the demultiplexer 19.

  The demultiplexer 19 extracts electronic program guide information from the broadcast data, and records it in the nonvolatile memory 4 as electronic program guide information for digital broadcasting.

  Here, when the electronic program guide information is distributed separately for each channel, the demultiplexer 19 extracts the electronic program guide information from the broadcast data of each channel that can be received by the digital antenna 7, and stores the information in the nonvolatile memory. Record in 4.

  Further, the analog tuner unit 11 extracts a broadcast signal of a predetermined channel that distributes the electronic program guide information from the analog broadcast signal, and sends the extracted broadcast signal to the demodulator 12.

  At this time, the demodulator 12 generates an NTSC signal based on the broadcast signal and sends the generated NTSC signal to a VBI (Vertical Blanking Interval) slicer 20.

  The VBI slicer 20 separates the video signal included therein from the NTSC signal, and cuts out the vertical blanking period portion in which the electronic program guide information is stored from the video signal and sends it to the EPG decoder 21.

  The EPG decoder 21 obtains electronic program guide information by decoding the vertical blanking interval portion cut out from the video signal, and records this information in the nonvolatile memory 4 as electronic program guide information for analog broadcasting. In this way, the control unit 2 acquires electronic program guide information for analog broadcasting and digital broadcasting.

  Incidentally, the electronic program guide information includes, for example, broadcast station name, broadcast date / time, program title, genre, program overview, program details, performer name, etc. as program information for each program scheduled to be broadcast in the next week from now. is described.

  The control unit 2 reads the electronic program guide information from the non-volatile memory 4, and based on the read electronic program guide information, screen data (hereinafter, referred to as program table screen data) that lists the broadcast schedules of a plurality of programs scheduled to be broadcast. This is also called program guide screen data). Further, the control unit 2 sends the program guide screen data to a RAM (Random Access Memory) 22 for temporary recording.

  Then, under the control of the control unit 2, the GUI superimposing unit 16 reads out the program guide screen data from the RAM 22, generates a program guide screen signal, and sends it to the display 17. Accordingly, the control unit 2 can display the analog broadcast or digital broadcast program guide screen on the display 17 based on the program guide screen signal.

  When an arbitrary program is selected on the program guide screen displayed on the display 17 and a viewing reservation is instructed by an operation of the remote controller RM or the like, the control unit 2 instructs program information (broadcast station name and broadcast station name) of the selected program. Viewing reservation information indicating the viewing date and time of the program is generated using the broadcast date and time.

  Then, the control unit 2 records the viewing reservation information in, for example, the non-volatile memory 4, thereby making a viewing reservation for the program instructed to be viewed.

  When an arbitrary program is selected on the program guide screen displayed on the display 17 and a recording reservation is instructed by an operation of the remote controller RM or the like, the control unit 2 instructs program information (broadcast station name) of the selected program. Recording schedule information indicating the recording date and time of the program is generated.

  Then, the control unit 2 records the recording reservation information in, for example, the non-volatile memory 4 to make a recording reservation for the program instructed to make the recording reservation.

  Incidentally, when the control unit 2 records a program, the control unit 2 records the program information of the program in the hard disk drive 3 together with the program data.

  Further, the control unit 2 receives various data distributed from a network device (for example, a server) (not shown) sequentially via the network terminal 23 and the network controller 24 in accordance with the operation of the remote controller RM and the like to the hard disk drive 3. Record.

  Further, the control unit 2 reads various data from the hard disk drive 3 in accordance with the operation of the remote controller RM, and transmits the read various data to the network device via the network controller 24 and the network terminal 23 sequentially. In this way, the control unit 2 can also send and receive various data to and from the network device.

  Furthermore, the control unit 2 generates various screen data according to the operation of the remote controller RM, and sends the generated various screen data to the RAM 22 for temporary recording.

  The GUI superimposing unit 16 reads various screen data from the RAM 22 under the control of the control unit 2, generates a screen signal, and sends the screen signal to the display 17. Thereby, the control unit 2 displays various screens (recorded program list screen etc.) on the display 17 based on the screen signal.

  By the way, the analog broadcast and digital broadcast programs described above include programs for relaying sports such as sports baseball and soccer (hereinafter also referred to as sports events).

  In addition, for analog broadcasting and digital broadcasting programs, various scenes such as highlight scenes of games of a plurality of sports events performed for a predetermined period such as one day or one week are displayed for each sport event. There is also a program for broadcasting as a digest.

  Incidentally, in the following description, a program for relaying a sport-type game is also called a relay program, and program data of the relay program is also called relay program data.

  Further, in the following description, for each sport item, a program for broadcasting various scenes of the game together as a digest is also referred to as a digest program, and the program data of the digest program is also referred to as digest program data.

  As shown in FIG. 2, in the digest program, a digest of various sports such as baseball and soccer and a commercial message (CM) of the program sponsor are arranged in a predetermined order along the time axis of the broadcast time. Configured.

  Actually, the digest program is configured by inserting a commercial message at a predetermined position such as the head, tail or middle of the digest program.

  In the digest program, the digest of each sport event is composed of one or a plurality of scenes, and each scene is composed of one or a plurality of shots.

  On the other hand, a relay program (not shown) is configured such that a game relay portion and a program sponsor's commercial message are alternately arranged along a broadcast time axis.

  Actually, the relay program is configured by inserting a commercial message at a predetermined position such as the head, tail, or middle of the relay program.

  As for the relay program, the relay part of the game is composed of one or a plurality of scenes, and each scene is composed of one or a plurality of shots.

  Here, the individual scenes in the digest program and the relay program are, for example, from the beginning to the end of one scene that is continuously photographed by one television camera without switching the television camera.

  In addition, each shot in a digest program or a relay program is a scene from the time when the angle starts to change due to panning or zooming of the television camera in one scene to the time when the angle starts to change again due to panning or zooming. is there.

  Therefore, in a digest program or a relay program, as described above, a plurality of shots may be included in one scene (that is, one scene is constituted by a plurality of shots).

  In addition, in a digest program or a relay program, if the angle hardly changes in one scene, the one scene may become one shot as it is.

  Incidentally, the commercial message is produced at a broadcast time arbitrarily selected from various broadcast times determined in advance such as 15 seconds, 30 seconds, 45 seconds, and the like.

  By the way, in the program recording apparatus 1, for example, the manufacturer of the program recording apparatus 1 has previously built an identification model for identifying the sport event and the digest part of the sport event in the digest program data.

  That is, in other words, in the program recording apparatus 1, an identification model for identifying which sport item is the digest of each digest in the digest program is built in advance.

  In order to actually build an identification model in advance in the program recording apparatus 1 by the manufacturer of the program recording apparatus 1, for example, a model construction apparatus (not shown) such as a computer apparatus is used.

  The model construction device separates the video data from the relay program data of the broadcast program already broadcast, and deletes the commercial message portion from the video data.

  Then, the model construction apparatus respectively includes feature amounts (hereinafter also referred to as image feature amounts) from a plurality of frames of image data constituting the video data from which the commercial message portion has been deleted (hereinafter also referred to as commercial deleted video data). To extract.

  In addition, the model construction apparatus causes the operator to actually view the contents of the relay program and to specify the sport item of the game being relayed on the relay program.

  Further, the model construction apparatus registers the image feature amount of the relay program in the database so as to be associated with the sport item designated by the operator.

  When the model construction apparatus accumulates a certain number of image feature quantities for each sport event, the model construction apparatus uses the image feature quantities as learning data and executes arithmetic processing using a predetermined learning algorithm, thereby using the sport feature identification. Find the discriminant function.

  When the model construction device obtains the discriminant function, it stores the discriminant function in, for example, the hard disk drive 3 of the program recording device 1.

  The model construction device also stores, for example, a discriminating program for discriminating the sporting event of the digest for each digest portion of the digest program data using the discriminant function in the hard disk drive 3 of the program recording device 1.

  In this way, the model construction device pre-constructs an identification model for identifying the sport event and the digest part of the sport event in the digest program data of the recorded digest program in the program recording device 1.

  When the recording reservation of the digest program is instructed on the analog broadcast or digital broadcast program guide screen displayed on the display 17, the control unit 2 of the program recording apparatus 1 generates the recording reservation information as described above. Then, the digest program is reserved for recording.

  When the control unit 2 detects that the current date and time has reached the broadcast date and time of the digest program indicated by the recording reservation information, the control unit 2 records the digest program so that the digest program data is recorded in the hard disk drive 3 as described above.

  For example, when the recording of the digest program is completed, the control unit 2 uses a plurality of frames of image data constituting the video data of the digest program as shown in FIG. Perform unit identification processing.

  In this case, the control unit 2 reads the digest program data of the digest program from the hard disk drive 3 and sends it to the demultiplexer 14 via the stream buffer 9.

  At this time, for example, the demultiplexer 14 separates video data and audio data from the digest program data, and sends the video data and audio data to the AV decoder 15.

  Further, the AV decoder 15 decodes (that is, decodes) the video data and audio data given from the demultiplexer 14 and then sends them to the control unit 2.

  When the video data and audio data of the digest program are given from the AV decoder 15, for example, the control unit 2 sequentially detects the silence position as a time code from the head to the tail of the audio data based on the data level of the audio data, for example. .

  In addition, the control unit 2 sequentially detects the time between the two silent positions before and after the time code sequentially detected from the head to the tail of the audio data, and based on the detected time, The time code at the head position and the tail position is detected.

  Then, the control unit 2 deletes the commercial message part from the video data of the digest program based on the detected time code at the head position and the tail position of the commercial message part to generate commercial deleted video data.

  Further, the control unit 2 sequentially extracts one frame of image data from the commercial deleted video data from the head to the tail at a relatively short predetermined time interval such as 0.5 seconds.

  Then, the control unit 2 extracts the image feature amount of the extracted image data from one frame of image data (hereinafter also referred to as extracted image data) extracted sequentially from the commercial deleted video data.

  Actually, the control unit 2 performs the thinning process on the extracted image data and changes the saturation for each pixel, thereby reducing the black and white reduced image having a smaller size than the frame image based on the extracted image data. Reduced image data is generated.

  The control unit 2 converts the extracted image data into grayscale image data, and then divides the image based on the image data into a plurality of blocks.

  Furthermore, the control unit 2 calculates a luminance gradient vector (a vector representing the direction of change in brightness) of the edge portion at one or a plurality of positions in the block for each block.

  Then, the control unit 2 detects a luminance gradient vector indicating the maximum value for each block, and calculates a histogram of luminance gradient vectors detected in all blocks (hereinafter also referred to as a luminance gradient histogram).

  In this way, the control unit 2 digitizes and extracts the feature of the picture shape of the frame image based on the extracted image data from the extracted image data, and represents the feature of the picture shape of the frame image. Reduced image data as a quantity and a luminance gradient histogram are generated.

  Further, the control unit 2 is based on the extracted image data, and is a 16-bin histogram (hereinafter referred to as “lightness color difference”) representing the distribution of brightness (Y) and color difference (Cb, Cr) in the frame image based on the extracted image data. (Also called a histogram).

  Further, the control unit 2 divides the frame image based on the extracted image data into a plurality of blocks, and calculates a three-dimensional histogram of hue, saturation, and luminance as a color space for each block.

  The control unit 2 detects the most frequent color as the representative color of the block based on the calculation result of the three-dimensional histogram for each block, and generates representative color data in which the representative colors detected in all the blocks are collected. To do.

  In this way, the control unit 2 extracts the color characteristics of the frame image based on the extracted image data from the extracted image data, and extracts the lightness as an image feature amount representing the color characteristics of the frame image. A color difference histogram and representative color data are also generated.

  When the control unit 2 finishes extracting such various image feature amounts from the plurality of extracted image data, the control unit 2 reads the above-described identification function from the hard disk drive 3.

  Further, the control unit 2 sequentially assigns the image feature amount of one extracted image data as a variable to the identification function, and executes the calculation of the identification function by substituting the image feature amount of the one extracted image data as a variable. To do.

  As a result, the control unit 2 represents, for each extracted image data, a percentage (hereinafter referred to as a probability ratio) that indicates how likely each frame image based on the extracted image data is as an individual sport item. Calculated).

  Then, for each extracted image data, the control unit 2 determines, based on the calculation result, one sport item that is most probable (that is, the highest probability ratio) of the frame image based on the extracted image data. A sporting event.

  That is, for each extracted image data, the control unit 2 identifies which sport type digest frame image is based on the extracted image data. And the control part 2 will complete | finish an image unit identification process, if the sport item is identified about all the extraction image data.

  In addition, when the extracted image data is extracted from the commercial deleted video data in the image unit identification process, the control unit 2 performs a shot unit identification process for identifying a sport item for each shot in the digest program in parallel with the image unit identification process. Execute.

  As shown in FIGS. 3 and 4, when the shot unit identification process is started, the control unit 2 sequentially corresponds to the two extracted image data FD1 before and after the extracted image data FD1 along the reproduction time axis. The pixel values are compared, and the similarity between the two extracted image data FD1 before and after is calculated.

  Incidentally, for example, the degree of similarity indicates a higher value as the pictures of two frame images based on the two extracted front and rear extracted image data FD1 are similar to each other. The lower the value, the different the picture of the frame image.

  Then, based on the degree of similarity, the control unit 2 in the commercial deleted video data VD1, the time code in which the head position and the tail position of each shot portion in the program video of the digest program are added to the extracted image data FD1, respectively. Are detected sequentially.

  Actually, the control unit 2 extracts the rear side of the extracted image data FD1 before and after the position of the extracted image data FD1 at the head of the commercial deleted video data VD1 and the similarity between them is lower than a predetermined threshold. The position of the image data FD1 is detected as the head position of each shot part.

  The control unit 2 also determines the position of the extracted image data FD1 on the front side of the two extracted front and rear extracted image data FD1 whose similarity is lower than a predetermined threshold, and extracted image data at the tail of the commercial deleted video data VD1. The position of FD1 is detected as the tail position of each shot portion.

  As shown in FIGS. 3 and 5, the control unit 2 includes the shot part in the shot part based on the time code of the head position and tail position of each shot part (that is, from the head position of the shot part to the tail position). A plurality of extracted image data FD1).

  Further, the control unit 2 aggregates, for each shot part, the sport items identified for the plurality of extracted image data of the shot part, and determines the sport type most frequently identified for the plurality of extracted image data for the shot part. A sporting event.

  That is, for each shot portion of the commercial-deleted video data, the control unit 2 identifies which sport item's digest is the shot based on the shot portion (that is, the video). And the control part 2 will complete | finish a shot unit identification process, if the sport item is identified about all the shot parts.

  In this way, the control unit 2 identifies the sport item in the digest program data and identifies the digest part of the sport item in shot units.

  By the way, as shown in FIG. 6, when the control unit 2 finishes identifying the sport event for each shot part, the control unit 2 sequentially compares the sport event identified for the front and rear two shot parts along the reproduction time axis.

  Further, the control unit 2 detects the presence / absence of continuation of shot portions identified as being the same sport event from the head to the tail of the commercial deleted video data VD1 based on the comparison result.

  As a result, when the plurality of shot portions identified as the same sport event are continuous along the playback time axis, the control unit 2 uses the plurality of consecutive shot portions as the digest portion of the sport event. Set to one playback section.

  In addition, when there is a shot part that is identified as any sport event, the control unit 2 sets the shot part as it is as a digest part of the sport event as one reproduction section.

  Further, for each playback section, the control unit 2 generates playback section information indicating the start position and the tail position of the playback section and the digest sport item that can be viewed by playback of the playback section.

  Then, the control unit 2 generates a reproduction section list for each item that lists the reproduction section information for each reproduction section in the order in which the reproduction sections are detected from the head to the tail of the commercial deleted video data VD1.

  Incidentally, in the following description, the beginning position (that is, the In point) of the playback section is also referred to as a playback start position, and the tail position (that is, the Out point) of the playback section is also referred to as a playback end position.

  Actually, when a plurality of continuous shot portions are set as one playback section, the control unit 2 sets the playback start position of the playback section as the head position of the first shot portion positioned in the playback section. .

  In addition, when a plurality of continuous shot portions are set as one playback section, the control unit 2 sets the playback end position of the playback section as the tail position of one shot part positioned most recently in the playback section.

  On the other hand, when one shot portion is directly used as one playback section, the control unit 2 sets the playback start position and playback end position of the playback section as the head position and the tail position of the shot section.

  Then, the control unit 2 describes the reproduction start position and the reproduction end position in the reproduction section information with a time code added to the corresponding extracted image data.

  When the control section 2 generates the item-specific reproduction section list in this way, the control section 2 sends the item-specific reproduction section list to the hard disk drive 3 and records it in association with the digest program data used for identifying the sport item at this time. To do.

  By the way, the control unit 2 identifies the sport type of the digest for the recorded digest program, and when the user instructs the reproduction of the digest program via the remote controller RM and designates the desired sport type, the hard disk drive 3 The digest program data and the item-specific reproduction section list associated therewith are read out.

  The control unit 2 sends the digest program data to the demultiplexer 14 via the stream buffer 9, and the video data and audio data (or text data) are separated from the digest program data in the demultiplexer 14, and the AV decoder 15 To send.

  Further, at this time, the control unit 2 sequentially confirms the contents of the plurality of reproduction section information included in the reproduction section list for each item according to the order of the arrangement, and the same sport as the desired sport item designated by the user Retrieving section information indicating an item is searched. Then, the control unit 2 notifies the AV decoder 15 of the playback start position and playback end position indicated by the searched playback section information.

  As a result, the AV decoder 15 decodes (that is, decodes) the playback section from the playback start position to the playback end position in the video data and audio data (or text data) given from the demultiplexer 14, and then performs digital-analog conversion. Thus, a playback section video signal and a playback section audio signal (or playback section text signal) are generated.

  Then, the AV decoder 15 sends the playback section video signal (and the playback section text signal) to the GUI superimposer 16.

  The GUI superimposing unit 16 superimposes the graphics signal (or the playback section text signal) on the playback section video signal and sends the playback section video signal to the display 17. Further, the AV decoder 15 sends the playback section audio signal to the speaker 18.

  As a result, the control unit 2 displays the video of the digest of the desired sport type in the digest program on the display 17 based on the playback section video signal, and the digest of the digest based on the playback section audio signal from the speaker 18 in accordance with the display. Output audio.

  In this manner, the control unit 2 can view only the digest of a desired sport item in the recorded digest program.

  In addition to such a configuration, in the case of this program recording apparatus 1, the control unit 2 can appropriately reconstruct an identification model that has been constructed in advance.

  For example, when the program recording apparatus 1 is started for the first time, the control unit 2 stores, on the display 17 via the GUI superimposing device 16, item input screen data for inputting a desired sport item stored in advance in the RAM 22. Send it out.

  As a result, the control unit 2 displays an event input screen (not shown) based on the event input screen data on the display 17.

  Here, the item input screen has a plurality of name input fields for inputting names of a plurality of sports items. On the event input screen, in the name input field for each sport event, the name of one sport event such as “baseball”, “Yakyu”, “baseball”, “Baseball”, etc. is written in kanji or hiragana. , Katakana, romaji, etc., so that you can change the notation and input multiple items.

  In addition, on the event input screen, for example, a name of a detailed classification of one sport event such as “professional baseball”, “high school baseball”, and “Olympic baseball” is regarded as one sport event, and one sport is recorded. It can also be entered in the event name input field.

  Furthermore, on the event input screen, the names of detailed classifications of one sport event such as “professional baseball”, “high school baseball”, and “Olympic baseball” are regarded as different sport events, and different sport events. It can also be entered in the name input field.

  In other words, the event input screen allows the user to select and input a desired sport event as a large category such as “baseball” or “soccer” or a detailed category such as “professional baseball” or “high school baseball”. It is made to be able to let you.

  In this state, for example, when the user inputs the name of one or a plurality of desired sport items on the event input screen via the remote controller RM, the control unit 2 is a word list of the input sport event names. Create And the control part 2 records the word list in the non-volatile memory 4, for example.

  When the control unit 2 records the word list in the non-volatile memory 4, for example, every time the electronic program guide information recorded in the non-volatile memory 4 is updated, the updated electronic program is read from the non-volatile memory 4. The guidance information is read out, and the word list is also read out at that time.

  Then, the control unit 2 compares the name of the desired sport item listed in the word list with the program information in the electronic program guide information, so that the relay program of the desired sport type specified by the user is performed. Find program information about.

  When the control unit 2 searches for program information of the desired sports-type relay program specified by the user in this way, the control unit 2 generates the recording reservation information in the same manner as described above based on the program information, and Scheduled recording of relay programs automatically.

  In this state, when the control unit 2 detects that the current date and time has reached the broadcast date and time of the relay program of the desired sport type indicated by the recording reservation information, it transmits the relay program data and program information to the hard disk drive 3 as described above. The relay program is recorded so as to be recorded in association with each other.

  In this way, the control unit 2 sequentially records the relay program of the desired sport type according to the recording reservation information. However, when the control unit 2 starts recording a relay program of a desired sport type, for example, among the relay programs of the desired sport type to be sequentially recorded, for example, the relay program whose recording order is an even number and the recording Can be distinguished from relay programs whose order is odd.

  That is, the control unit 2 indicates that when recording a relay program of a desired sport type in which the recording order is an even number, it is used together with the relay program data on the hard disk drive 3 to be used for the construction of a database described later. Information is also sent out. Then, the control unit 2 records the relay program data and the construction use identification information in association with each other on the hard disk drive 3.

  In addition, when recording a relay program of a desired sport type in which the recording order is an odd number, the control unit 2 is used together with the relay program data on the hard disk drive 3 for confirming the identification accuracy of the desired sport type which will be described later. Is also sent out accuracy confirmation identification information. The control unit 2 records the relay program data and accuracy confirmation identification information in association with each other on the hard disk drive 3.

  In this way, when recording the even-numbered relay program, the control unit 2 records the even-numbered relay program based on the construction usage identification information from the hard disk drive 3 as shown in FIG. The relay program data of the program is detected and read together with the corresponding program information.

  Then, the control unit 2 sends the relay program data to the demultiplexer 14 via the stream buffer 9.

  At this time, for example, the demultiplexer 14 separates video data and audio data from the relay program data, and sends the video data and audio data to the AV decoder 15.

  Further, the AV decoder 15 decodes (that is, decodes) the video data and audio data given from the demultiplexer 14 and then sends them to the control unit 2.

  When the video data and audio data of the relay program are given from the AV decoder 15, the control unit 2 receives the commercial-deleted video from the video data of the relay program, for example, as in the case of identifying the sport item in the digest program data described above. Generate data.

  The control unit 2 sequentially extracts a plurality of extracted image data from the commercial deleted video data in the same manner as in the case of identifying the sport item in the digest program data described above, and various image features for each extracted image data. Extract the amount.

  Further, based on the program information at this time, the control unit 2 detects the name of the sport item of the relay program (that is, the relay program recorded at this time) used for extracting the image feature amount at this time.

  Then, the control unit 2 sends the image feature amount for each extracted image data to the hard disk drive 3 together with the item information indicating the name of the sport item.

  Thus, the control unit 2 registers the image feature amount for each extracted image data in the database for image feature amount management in association with the item information, and registers the image feature amount for each extracted image data in the item information. At the same time, it is recorded in the hard disk drive 3.

  Incidentally, in the following description, an image feature quantity management database that registers image feature quantities for each extracted image data in association with item information is also referred to as a feature quantity database.

  In this way, every time an even-numbered relay program is recorded, the control unit 2 extracts the image feature amount from the extracted image data of the relay program, and associates the image feature amount with the item information. The feature amount database is constructed in such a manner as to be registered in the feature amount database.

  Incidentally, when the control unit 2 automatically schedules recording of a relay program in response to the update of the electronic program guide information, the control unit 2 indicates that the recording reservation information is automatic recording reservation by the control unit 2. The identification information shown (hereinafter also referred to as automatic reservation identification information) is added.

  The control unit 2 reads the word list from the non-volatile memory 4 when the recording reservation of the relay program is instructed according to the operation of the remote controller RM by the user.

  Further, the control unit 2 determines whether or not the relay program is a relay program of a desired sport type designated by the user based on the word list and the program information of the relay program for which the recording reservation is instructed. Is determined.

  As a result, if the relay program for which recording reservation is instructed is a relay program of a desired sport type, the control unit 2 records the recording from the recording reservation information of the relay program that has already been automatically reserved for recording. Find recording reservation information of a relay program for which reservation is instructed.

  Then, the control unit 2 replaces the automatic recording identification information that has already been added to the searched recording reservation information with identification information (hereinafter referred to as user reservation) indicating that the recording reservation is in accordance with a user instruction. (Also called identification information).

  In this state, when the control unit 2 records a relay program of a desired sport type according to the recording reservation information, the automatic reservation identification information and user reservation identification information added to the recording reservation information of the recorded relay program are also stored in the hard disk drive. 3 is recorded in association with the relay program data.

  Thus, when the relay program of the desired sport type is recorded, the control unit 2 determines whether the relay program has been recorded according to the recording reservation instruction from the user or the automatic recording reservation by the control unit 2. It can be distinguished.

  Each time the control unit 2 registers the image feature amount in the feature amount database in association with the item information, the relay program used to extract the image feature amount is automatically recorded by the user. It is discriminated according to which of the recordings.

  As a result, when the relay program used to extract the image feature value is recorded in accordance with the recording reservation instruction from the user, the control unit 2 thereafter deletes the relay program until the user instructs to delete it. The relay program data of the relay program remains recorded on the hard disk drive 3.

  On the other hand, when the relay program used to extract the image feature amount is recorded in accordance with the automatic recording reservation, the control unit 2 performs the relay when the registration of the image feature amount in the feature amount database is completed. The relay program data of the program is automatically deleted from the hard disk drive 3.

  As a result, the controller 2 prevents the free space of the hard disk drive 3 from being reduced unnecessarily, so that every time a broadcast program of a desired sport type is broadcast, the relay program can be recorded almost certainly. .

  By the way, for example, when the word list is recorded, the control unit 2 has been selected in advance for two weeks or three weeks in order to periodically confirm the identification accuracy of a desired sport item using the identification model from the date and time at that time. The date and time when a predetermined period such as the above has passed (hereinafter also referred to as accuracy check date and time) is calculated.

  In addition, the control unit 2 may select three months or half a year that is selected in advance for a predetermined period for checking accuracy in order to periodically rebuild the identification model from the date and time when the word list is recorded. The date and time when a predetermined period has passed (hereinafter also referred to as the reconstruction execution date and time) is also calculated.

  Then, the control unit 2 records the accuracy check date / time information indicating the accuracy check date / time and the rebuild execution date / time information indicating the rebuild execution date / time in the nonvolatile memory 4, for example.

  When the current date / time reaches the accuracy check date / time indicated by the accuracy check date / time information, the control unit 2 starts the identification accuracy check process.

  At this time, as shown in FIG. 8, the control unit 2 uses the identification information for accuracy confirmation from the hard disk drive 3 to convert the relay program data of one relay program whose recording order is odd to the corresponding program information. Read with. Then, the control unit 2 sends the relay program data to the demultiplexer 14 via the stream buffer 9.

  At this time, for example, the demultiplexer 14 separates video data and audio data from the relay program data, and sends the video data and audio data to the AV decoder 15.

  Further, the AV decoder 15 decodes (that is, decodes) the video data and audio data given from the demultiplexer 14 and then sends them to the control unit 2.

  When the video data and the audio data are given from the AV decoder 15, the control unit 2 generates commercial-deleted video data from the video data, as in the case of identifying the sport item in the digest program data described above.

  The control unit 2 sequentially extracts a plurality of extracted image data from the commercial deleted video data in the same manner as in the case of identifying the sport item in the digest program data described above, and various image features for each extracted image data. Extract the amount.

  Further, the control unit 2 reads out an identification function from the hard disk drive 3 as in the case of identifying the sport item in the digest program data described above, and sequentially uses the image feature amount of one extracted image data as a variable in the identification function. Substitute and execute the operation.

  Thereby, the control unit 2 calculates the probability ratio of each sport item for the frame image based on the extracted image data for each extracted image data, and based on the calculation result, Identify the sport event of the based frame image.

  At this time, the control unit 2 detects individual shot portions in the program video of the relay program in the commercial-deleted video data, as in the case of identifying the sport item in the digest program data described above.

  And the control part 2 totals the sport item identified about the some extraction image data for every detected shot part, and also identifies the sport event of the said shot part.

  By the way, if the control part 2 identifies the sport item of each shot part in commercial deletion image | video data, it will total the sport item identified for every said shot part.

  As a result, the control unit 2 sets the sport event most identified for the plurality of shot portions as the sport event of the commercial deleted video data. That is, the control unit 2 identifies the sport item of the relay program whose recording order is an odd number.

  Further, the control unit 2 determines the original sports event (that is, the correct sports event) of the relay program whose recording order is odd based on the program information read together with the relay program data from the hard disk drive 3 at this time. To detect.

  Further, the control unit 2 compares the original sporting event of the relay program with the sporting event identified for the relay program, and determines whether or not the sporting event has been correctly identified for the relay program. .

  When the control unit 2 determines the quality of the sport item identification for one relay program in this way, the program data of the other one relay program whose recording order is odd-numbered from the hard disk drive 3 is also supported. Read together with program information.

  In this case as well, the control unit 2 similarly identifies the sport type of the relay program and determines whether or not the desired sport type has been correctly identified.

  That is, the control unit 2 sequentially reads the program data of the other relay program whose recording order is odd-numbered from the hard disk drive 3 and the corresponding program information, and similarly the sporting event of the relay program. Identify and judge the quality of the identification.

  In this way, for example, when the control unit 2 finishes discriminating the quality of the sport item for all the relay programs that have been recorded in the hard disk drive 3 up to this point and the recording order is odd, the determination is made. Aggregate the results.

  That is, the control unit 2 identifies the desired sport item by dividing the number of relay programs that have been correctly identified by the desired sport item by the total number of relay programs that have been recorded in an odd number. Is calculated as a correct answer rate (hereinafter also referred to as an identification correct answer rate).

  Moreover, the control part 2 compares the identification correct answer rate with the pre-selected normal correct rate. As a result, the control unit 2 reconstructs the identification model, assuming that the identification accuracy rate for the desired sport item is greater than or equal to the specified accuracy rate, and that the identification accuracy of the desired sport item by the current identification model is greater than or equal to the definition. The postponing and identification accuracy confirmation processing is terminated.

  On the other hand, if the identification accuracy rate for the desired sport item is lower than the specified accuracy rate, the control unit 2 once determines that the identification accuracy of the desired sport item by the current identification model is lower than the specification. Although the identification accuracy confirmation process is finished, the reconstruction process is started.

  At this time, as shown in FIG. 9, the control unit 2 converts all image feature values accumulated from the hard disk drive 3 up to that point (that is, registered in the feature value database) according to the item information. Read for each desired sport event.

  Further, the control unit 2 sequentially reads the item information registered in the feature amount database from the hard disk drive 3 in accordance with the reading of the image feature amount for each desired sport item.

  The control unit 2 uses, for example, a classification method called a support vector machine (SVM), and determines the image feature amount for each sport item according to software called a support vector library (LIBSVM). An arithmetic process is executed using the event information indicating the name as learning data.

  Thereby, the control unit 2 learns to identify a desired sport event based on the image feature amount, for example, to identify a sport event different from the desired sport event, and reflects the learning result. An identification function for identifying a desired sport event is generated.

  Thereby, the control unit 2 temporarily constructs a new identification model. Here, provisional construction of an identification model means that a newly generated identification function can be used for identification of a sport event, but the identification function of the identification model before reconstruction (ie, the current) is also used to identify a sport event. Indicates that it can be used.

  In other words, provisional construction of an identification model means that, even if a new identification function is generated, the identification function of the identification model before reconstruction is not updated to the new identification function, in other words, before reconstruction. This indicates that the identification model has not been updated to a new identification model.

  And the control part 2 performs the process similar to the identification precision confirmation process mentioned above using the identification model temporarily constructed | assembled (namely, using the newly produced | generated identification function).

  Thereby, the control unit 2 actually identifies the sport items of the plurality of relay programs using the identification function generated at this time, and calculates the identification correct answer rate for the desired sport item based on the identification result.

  However, at this time, the control unit 2 temporarily sets the identification accuracy rate calculated in the identification accuracy confirmation process in the previous stage to the specified accuracy rate temporarily, and replaces the preselected accuracy rate with the temporary accuracy rate. The specified correct answer rate is used to determine whether the identification accuracy is good or bad.

  That is, the control unit 2 compares the discrimination correct answer rate for the desired sport event obtained by identifying the sport event using the new discrimination function with the temporarily set correct answer rate, The quality of the identification of the desired sport item is determined.

  As a result, if the identification accuracy of the desired sport item is not less than a specified value (that is, the identification accuracy rate is not less than the specified accuracy rate temporarily set), the control function 2 stores the generated identification function in the hard disk drive 3. Send out and record to overwrite the already recorded identification function.

  That is, the control unit 2 reconstructs the identification model by updating the identification model before the reconstruction to the identification model that has been temporarily constructed, and ends the reconstruction process.

  On the other hand, if the identification accuracy of the desired sport item is lower than the regulation (that is, the identification accuracy rate is smaller than the temporarily specified accuracy rate), the control unit 2 generates the identification generated at this time. Discard the function and end the reconstruction process.

  In other words, the control unit 2 does not update the identification model before the reconstruction to the temporarily constructed identification model, but uses the identification model before the reconstruction for identifying a desired sport event thereafter.

  By the way, when the identification accuracy confirmation process is terminated so as to forego the reconstruction of the identification model, the control unit 2 calculates the accuracy confirmation date and time when the predetermined period has passed again from the date and time when the identification model was terminated.

  Further, the control unit 2 sends the accuracy check date / time information indicating the newly calculated accuracy check date / time to the nonvolatile memory 4 and records the accuracy check date / time information so as to overwrite the already recorded accuracy check date / time information. Update the date and time.

  On the other hand, when the reconstruction process is executed subsequent to the identification accuracy confirmation process, the control unit 2 finishes the reconstruction process, and the accuracy confirmation date and time when the predetermined period has passed again from the date and time when the reconstruction process was completed. Is calculated.

  Further, the control unit 2 sends the accuracy check date / time information indicating the newly calculated accuracy check date / time to the nonvolatile memory 4 and records the accuracy check date / time information so as to overwrite the already recorded accuracy check date / time information. Update the date and time.

  When the current date and time reaches the updated accuracy confirmation date and time, the control unit 2 executes the identification accuracy confirmation processing again as described above. In this way, the control unit 2 periodically executes the identification accuracy confirmation process, and appropriately executes the reconstruction process according to the process result to reconstruct the identification model.

  Further, when the current date / time reaches the rebuild execution date / time indicated by the rebuild execution date / time information, the control unit 2 executes a rebuild process similar to that described above with reference to FIG.

  However, at this time, when the control unit 2 calculates the identification accuracy rate for the identification of the desired sport item, the control unit 2 compares the calculated identification accuracy rate with the pre-selected predetermined accuracy rate, and thereby calculates the desired accuracy rate. The quality of the sporting event identification accuracy is determined.

  As a result, if the identification accuracy of the desired sport item is not less than a specified value (that is, the identification accuracy rate is not less than the pre-specified accuracy rate selected in advance), the control function 2 uses the identification function generated at this time as the hard disk drive 3. Is recorded so as to overwrite the already recorded identification function.

  That is, the control unit 2 reconstructs the identification model by updating the identification model before the reconstruction to the identification model that has been temporarily constructed, and ends the reconstruction process.

  On the other hand, the control unit 2 generates this time when the identification accuracy of the desired sport item is lower than the regulation (that is, the identification accuracy rate is smaller than the predetermined accuracy rate selected in advance). Discard the discriminant function and end the reconstruction process.

  In other words, the control unit 2 does not update the identification model before the reconstruction to the temporarily constructed identification model, but uses the identification model before the reconstruction for identifying a desired sport event thereafter.

  Then, when the rebuilding process ends, the control unit 2 calculates the rebuild execution date and time when the predetermined period has passed again from the date and time when the rebuild process ends.

  Further, the control unit 2 sends the rebuild execution date / time information indicating the newly calculated rebuild execution date / time to the nonvolatile memory 4 and records it so as to overwrite the already recorded rebuild execution date / time information, Thus, the rebuild execution date is updated.

  Therefore, when the control unit 2 reaches the current date and time and the updated rebuild execution date and time, the control unit 2 executes the rebuild process again as described above. In this way, the control unit 2 periodically executes the reconstruction process, and appropriately reconstructs the identification model.

  By the way, when the reconstruction process ends, the control unit 2 temporarily initializes the feature amount database so that the image feature amount of the relay program data is deleted from the hard disk drive 3 at that time.

  Then, the control unit 2 automatically reserves a recording program for a desired sports-type relay program again, and reconstructs the feature amount database in the same manner as described above while recording the relay program accordingly.

  As a result, when the reconstructing process is executed, the control unit 2 confirms the identification accuracy of a desired sport item using a recent (that is, newly recorded) relay program without using an old relay program. And a new reconstruction of the identification model.

  Incidentally, when the digest unit is recorded after reconstructing the identification model, the control unit 2 executes the image unit identification process as in the case described above with reference to FIG.

  Thereby, the control unit 2 reads out the program data of the digest program from the hard disk drive 3 and generates the commercial deleted video data.

  The control unit 2 sequentially extracts a plurality of extracted image data from the commercial deleted video data, and extracts various image feature amounts for each extracted image data.

  Further, the control unit 2 reads out an identification function from the hard disk drive 3 and executes an operation by sequentially substituting the image feature amount of one extracted image data into the identification function as a variable.

  Thereby, the control unit 2 calculates the probability ratio of a desired sport item and other sport items for the frame image based on the extracted image data for each extracted image data, and based on the calculation result, A sports event of the frame image based on the extracted image data is identified.

  At this time, the control unit 2 also performs shot unit identification processing in the same manner as described above, thereby detecting individual shot portions in the commercial deleted video data.

  And as shown in FIG. 10, the control part 2 totals the desired sport item identified about several extraction image data for every detected shot part, and another sport item, and identifies the sport item of the said shot part. To do.

  Thus, as shown in FIG. 11, the control unit 2 can accurately identify the digest portion of the desired sport event together with the desired sport event in the digest program data using the reconstructed identification model. it can.

  In the case of this embodiment, the control unit 2 displays the event input screen by operating the remote controller RM even if a desired sport event is specified by the user and the word list is recorded in the nonvolatile memory 4. When requested, the event input screen is displayed again on the display 17.

  In this state, when the remote controller RM is operated by the user and the name of one or a plurality of desired sport events is newly input on the event input screen, the control unit 2 lists the words of the input sport event names. Create a table.

  Then, the control unit 2 sends the word list to the nonvolatile memory 4 and records the word list so as to overwrite the already recorded word list, thus updating the word list.

  When the word list is updated in this way, the control unit 2 temporarily initializes the feature amount database by deleting the image feature amount accumulated up to that point from the hard disk drive 3.

  Then, the control unit 2 automatically reserves the recording of the relay program of the desired sport type designated anew according to the updated word list, and records the relay program accordingly, in the same manner as described above. Rebuild the quantity database. Further, the control unit 2 reconstructs the identification model in the same manner as described above using the reconstructed feature amount database.

  Thereby, even if a user's liking with respect to a sporting event changes, the control part 2 can reconfigure | reconstruct an identification model so that the desired sporting event designated anew can be identified corresponding to this.

  Next, the series of identification model reconstruction processes described above will be described using the flowcharts shown in FIGS. 12 and 13.

  When the program recording device 1 is started for the first time (or when the user is requested to display the event input screen), the control unit 2 performs the process according to the identification model reconstruction program stored in advance in the hard disk drive 3 or the nonvolatile memory 4. 12 starts the identification model reconstruction processing procedure RT1. Incidentally, the identification model restructuring program includes the above-described item identification program.

  When starting the identification model reconstruction processing procedure RT1, the control unit 2 displays an item input screen on the display 17 in step SP1.

  In this state, when a name of a desired sport event is input on the event input screen, the control unit 2 creates a word list of the input sport event name and stores the created word list in a nonvolatile manner. Is recorded in the memory 4 and the process proceeds to the next step SP2.

  In step SP2, the control unit 2 executes a database construction process for constructing a feature amount database. That is, when the control unit 2 moves to step SP2, the control unit 2 starts a database construction processing subroutine SRT1 shown in FIG.

  When starting the database construction processing subroutine SRT1, the control unit 2 generates recording reservation information for a relay program of a desired sport type when updating the electronic program guide information recorded in the nonvolatile memory 4 in step SP21. .

  And the control part 2 records the relay program of a desired sport item according to the recording reservation information, and moves to following step SP22.

  In step SP22, the control unit 2 extracts image feature amounts from a plurality of extracted image data of the recorded relay program, and proceeds to the next step SP23.

  In step SP23, the control unit 2 sends the image feature amount extracted in the relay program of the desired sport type to the hard disk drive 3 together with the item information indicating the name of the sport item of the relay program.

  Then, the control unit 2 records the plurality of image feature quantities in the hard disk drive 3 so as to be registered in the feature quantity database in association with the item information, thereby constructing the feature quantity database and performing the next step SP24. Move on.

  In step SP24, the control unit 2 ends the database construction processing subroutine SRT1. In this way, when the database construction process subroutine SRT1 is completed, the control unit 2 proceeds to step SP3 of the identification model reconstruction process procedure RT1.

  In step SP3, the control unit 2 determines whether or not the current date / time has reached the accuracy check date / time. If a negative result is obtained in this step SP3, this means that the identification accuracy of the desired sport item is not confirmed because it is not the time for periodically confirming the identification accuracy for the desired sport event. If the control unit 2 obtains such a negative result in step SP3, the control unit 2 proceeds to step SP4.

  In step SP4, the control unit 2 determines whether or not the current date and time has reached the reconstruction execution date and time. If a negative result is obtained in step SP4, this indicates that the reconstruction of the identification model is not performed because it is not the time for periodic reconstruction of the identification model. If the control unit 2 obtains such a negative result in step SP4, it returns to step SP2.

  Therefore, after that, the control unit 2 repeatedly executes the processing from step SP2 to step SP4 until a positive result is obtained in step SP3 or step SP4.

  Thus, each time a desired sports event relay program is recorded, the control unit 2 stores the image feature amount in such a manner that the image feature amount of the relay program is registered in the feature amount database in association with the item information. .

  By the way, if a positive result is obtained in step SP3, this means that the identification accuracy of the desired sport event is confirmed because it is the time for periodically identifying the accuracy of the desired sport event. If the control unit 2 obtains such a positive result in step SP3, the control unit 2 proceeds to step SP5.

  If a positive result is obtained in step SP4 described above, this means that it is time to periodically rebuild the identification model, and therefore the identification model is rebuilt. When the control unit 2 obtains such a positive result in step SP4, the control unit 2 proceeds to step SP8.

  In step SP5, the control unit 2 uses the current identification model to extract image feature amounts from a plurality of extracted image data in a desired sports-type relay program, and based on the extracted image feature amounts. A sports event of the relay program is identified.

  Similarly, the control unit 2 sequentially identifies the sport event for other relay programs of the desired sport event, and proceeds to the next step SP6.

  In step SP6, the control unit 2 calculates the identification correct answer rate of the desired sport item based on the identification result of the sport item for the plurality of relay programs, and proceeds to the next step SP7.

  In step SP7, the control unit 2 determines whether or not the identification accuracy of the desired sport item is lower than the standard, based on the identification accuracy rate.

  If a negative result is obtained in this step SP7, this means that, for example, the angle for shooting the game has not been changed in the desired sports-type relay program, so even if the current identification model is used, This means that the sports event can be correctly identified. If the controller 2 obtains such a negative result in step SP7, it returns to step SP2.

  If an affirmative result is obtained in step SP7, this means that, for example, the angle for shooting a game is changed in a relay program for a desired sport event, and the desired sport event is correct if the current identification model is used. Indicates that it may be difficult to identify. If the control unit 2 obtains such a positive result in step SP7, the control unit 2 proceeds to the next step SP8.

  In step SP8, the control unit 2 generates a new discriminant function by using the image feature amount in the feature amount database constructed up to that point and the name of the corresponding desired sport item, thereby creating an identification model. Is temporarily constructed, and the process proceeds to the next step SP9.

  In step SP9, the control unit 2 extracts image feature amounts from a plurality of extracted image data in a desired sports-type relay program, and uses the temporarily constructed identification model and uses the image feature amounts to perform the relay. Identify sporting events for the program.

  Similarly, the control unit 2 sequentially identifies the sport items for a plurality of other relay programs of the desired sport items, and proceeds to the next step SP10.

  In step SP10, the control unit 2 calculates the identification correct answer rate of the desired sport item based on the identification result of the sport item identified for the plurality of relay programs using the provisionally constructed identification model. Move to SP11.

  In step SP11, the control unit 2 determines whether or not the identification accuracy of a desired sport item is greater than or equal to a specified value based on the identification accuracy rate.

  If a negative result is obtained in this step SP11, this is because, for example, a new discriminant function is generated using more image feature values before the change of the angle than after the change of the angle for game shooting. The identification function indicates that it may be difficult to correctly identify the desired sport item of the relay program after the angle change. When the control unit 2 obtains such a negative result in step SP11, the control unit 2 proceeds to step SP13.

  If a positive result is obtained in step SP11, this means that, for example, a new discriminant function is generated using more image feature amounts after the angle change than before the angle change for game shooting. It shows that the desired sport item of the relay program after the change of the angle can be correctly identified using the identification function. When the control unit 2 obtains such a positive result in step SP11, the control unit 2 proceeds to the next step SP12.

  In step SP12, the control unit 2 updates the identification model before the reconstruction to the temporarily constructed identification model (that is, by updating the identification function of the current identification model to a new identification function). Is reconstructed and the process proceeds to the next step SP13.

  In step SP13, the control unit 2 temporarily initializes the feature amount database so as to delete the image feature amount, and returns to step SP2, thereby repeatedly executing the processing from step SP2 to step SP13.

  In this way, when the identification model reconstruction processing procedure RT1 is executed, the control unit 2 repeatedly executes the processing of step SP2 to step SP13 after executing the processing of step SP1.

  As a result, for example, even if the angle for shooting a game in a desired sports-type relay program is changed, the control unit 2 reflects the change using the image feature amount accumulated after the angle change. The identification model can be reconstructed as follows.

  Therefore, the control part 2 can be made to reduce that the identification accuracy of the desired sport item using an identification model falls.

  Next, a digest selection reproduction process for selectively reproducing a digest portion of a desired sport item in the digest program data will be described with reference to the flowchart shown in FIG.

  When the user is instructed to play a digest program via the remote controller RM and a desired sport item is specified, the control unit 2 is shown in FIG. 14 according to the digest selection / playback program stored in the hard disk drive 3, for example. The digest selection reproduction processing procedure RT2 is started.

  When the digest selection / playback processing procedure RT2 is started, the control unit 2 reads the digest program data and the item-specific playback section list associated with the digest program data from the hard disk drive 3 in step SP31, and proceeds to the next step SP32. .

  In step SP32, the control unit 2 separates the video data and audio data (or text data) from the digest program data in the demultiplexer 14 and supplies the video data and audio data (or text data) to the AV decoder 15.

  At this time, the control unit 2 selects the sports of the playback section indicated by the playback section information based on the contents of the first playback section information according to the order of the arrangement among the plurality of playback section information included in the playback section list classified by item. It is determined whether or not the event is a desired sport event.

  If a negative result is obtained in this step SP32, this indicates that one playback section focused on the digest program data is a playback section of another sport type different from the desired sport type. If the control unit 2 obtains such a negative result in step SP32, the control unit 2 proceeds to step SP33.

  In step SP33, the control unit 2 switches the playback section information for content confirmation in the playback section list for each item to the next playback section information according to the order of arrangement of the plurality of playback section information, and returns to step SP32.

  In this way, the control unit 2 thereafter repeatedly executes the processing of step SP32 and step SP33 until a positive result is obtained in step SP32.

  As a result, the control unit 2 searches the reproduction section information of the reproduction section indicating the desired sport item by sequentially confirming the contents of the plurality of reproduction section information included in the reproduction section list by item according to the order of the arrangement. To do.

  If an affirmative result is obtained in step SP32, this indicates that one reproduction section focused on the digest program data is a reproduction section of a desired sport item. If the control unit 2 obtains such a positive result in step SP32, the control unit 2 proceeds to the next step SP34.

  In step SP34, the control unit 2 notifies the AV decoder 15 of the reproduction start position and the reproduction end position indicated by the retrieved reproduction section information.

  Therefore, the control unit 2 uses the AV decoder 15 to reproduce the playback section video signal and the playback section audio signal based on the playback section from the playback start position to the playback end position of the video data and audio data (or text data) of the digest program data. (A playback section text signal) is generated and played back.

  As a result, the control unit 2 causes the display 17 to display the video of the digest of a desired sport item in the digest program based on the playback section video signal, and in accordance with the display, based on the playback section audio signal, The digest voice is output.

  In this way, the control unit 2 allows the user to view only the digest of the desired sport item in the digest program, moves to the next step SP35, and ends the digest selection / playback processing procedure RT2.

(1-2) Operation and Effect of Embodiment In the above configuration, when a desired sports item is designated by the user, the program recording device 1 sequentially records the designated broadcast program of the desired sports item. At the same time, image feature amounts are extracted from a plurality of extracted image data included in the video data of the recorded relay program.

  Further, the program recording apparatus 1 registers the image feature amount in such a manner that the image feature amount extracted from the plurality of extracted image data of the relay program is registered in the feature amount database in association with the name of the sport item of the relay program. To construct.

  Further, when the current date / time reaches the reconstruction execution date / time for executing the reconstruction of the identification model, the program recording apparatus 1 displays the image feature quantity registered up to that point in the feature quantity database together with the name of the desired sport item. And reconstruct the discrimination model to generate a new discrimination function.

  Therefore, for example, even if the angle for shooting a game in a relay program of a desired sport type is changed, the program recording apparatus 1 extracts and accumulates from a plurality of extracted image data of the relay program in which the angle is changed. The identification model can be reconstructed using the image feature value that has been used together with the name of the desired sport item.

  Therefore, the program recording apparatus 1 can change a desired sport type in the digest program data even if the angle of the scene constituting the digest of the desired sport type in the digest program is changed with the change of the angle in the relay program of the desired sport type. And it can reduce that the identification precision with the digest part of the said desired sporting event falls.

  According to the above configuration, the program recording apparatus 1 sequentially records a relay program of a desired sport type, extracts an image feature amount from a plurality of image data of the relay program, and determines the image feature amount as a desired sport. The classification model is stored in association with the name of the event, and at a given time, the identification model is regenerated by generating a new identification function by using the image feature quantity accumulated so far together with the name of the desired sport item. I tried to build it. Thereby, even if the angle for shooting a game in a relay program of a desired sport type is changed, the program recording apparatus 1 is extracted and accumulated from a plurality of image data of the relay program whose angle is changed. Reconstructing the identification model using the image feature amount together with the name of the desired sport item, and reducing the degradation of the identification accuracy between the desired sport item and the digest part of the desired sport item in the digest program data Can do. Therefore, the program recording apparatus 1 can accurately identify the digest portion of the desired sport event together with the desired sport event in the digest program data using the identification model.

  Further, each time the identification model is reconstructed, the program recording device 1 initializes the feature amount database, erases the image feature amount accumulated up to that point, and records a desired relay program again. However, the image feature amount of the relay program is stored in association with the name of the desired sport item.

  Thereby, the program recording apparatus 1 uses the image feature amount of the old relay program when executing the reconstruction of the identification model, without tentatively constructing an identification model having a low identification accuracy of a desired sport item, The identification model can be temporarily constructed using the image feature amount of the recently broadcasted relay program, in which the angle change can be more quickly reflected on the identification accuracy of the desired sport item.

  The program recording apparatus 1 periodically executes such reconstruction of the identification model. Therefore, the program recording apparatus 1 can prevent the identification model having a low identification accuracy of a desired sport item from being continuously used for a long time.

  In addition, the program recording apparatus 1 periodically performs confirmation of identification accuracy at a cycle shorter than the execution cycle of reconstruction of the identification model. Accordingly, the program recording apparatus 1 can detect the decrease at the earliest possible time even if the identification accuracy of the desired sport event is decreased due to the change of the angle.

  Then, when the program recording apparatus 1 detects that the identification accuracy of a desired sport item has decreased in this way, the program recording apparatus 1 continues to reconstruct the identification model. Therefore, when the program recording apparatus 1 detects that the identification accuracy of the desired sport item has declined even before the execution time of the reconstruction of the identification model, the program recording device 1 reconstructs the identification model and improves the identification accuracy of the desired sport item. Can be made.

  Further, when the program recording apparatus 1 executes the reconstruction process and provisionally constructs the identification model, the program recording apparatus 1 uses the provisionally constructed identification model as a test to identify the sport type of each of the plurality of relay programs of the desired sport type. In addition, the discrimination accuracy rate of the desired sport item is compared with the specified accuracy rate, and only when the identification accuracy rate is equal to or higher than the specified accuracy rate (that is, only when the identification accuracy is higher than the specification), identification before reconstruction is performed. The model was updated to the temporarily constructed identification model, thus reconstructing the identification model.

  Therefore, the program recording apparatus 1 avoids reconstructing the identification model so as to reduce the identification accuracy of a desired sport item based on the identification model before reconstruction (that is, the current) when the reconstruction process is executed. can do. That is, the program recording apparatus 1 can prevent the identification accuracy of a desired sport item from being lowered due to the reconstruction of the identification model.

  In particular, the program recording apparatus 1 confirms the identification accuracy of a desired sport item based on the identification model. As a result, the identification accuracy is lower than the standard, so that the reconstruction model is executed to temporarily construct the identification model. If the identification accuracy rate obtained by identifying the desired sport line using the provisionally constructed identification model as a test accuracy rate is defined as the specified accuracy rate, Compare with rate.

  The program recording apparatus 1 updates the identification model before reconstruction (that is, the current) identification model to the provisionally constructed identification model only when the identification accuracy rate is equal to or higher than the specified accuracy rate, and thus reconstructs the identification model. did.

  Therefore, the program recording apparatus 1 uses the provisionally constructed identification model on a trial basis to identify a desired sport item, and even if the identification accuracy rate is lower than a predetermined regulation accuracy rate, prior to the reconstruction process. If it is higher than the classification accuracy rate obtained in this way, it is possible to improve the identification accuracy of the desired sport item by the identification model after reconstruction, rather than the identification accuracy of the desired sport item by the identification model before reconstruction.

  Furthermore, the program recording apparatus 1 deletes the commercial message portion from the video data of the relay program, extracts the image feature amount, and uses it to reconstruct the identification model.

  Therefore, the program recording apparatus 1 avoids beforehand that the commercial message part included in the video data of the relay program of the desired sport type affects the generation of the discrimination function, and the discrimination accuracy of the desired sport type is lowered. Can do.

  Further, the program recording apparatus 1 also deletes the commercial message portion from the video data for the digest program and extracts and uses the image feature amount to digest the desired sport item in the digest program data. The part was identified.

  Therefore, the program recording apparatus 1 reliably avoids erroneously identifying a commercial message part produced using a video of a desired sport event as a digest part of the desired sport event in the digest program data. Can do.

(2) Other embodiments (2-1) Other embodiments 1
In the above-described embodiment, the case where the identification model is appropriately reconstructed from the state in which the manufacturer has previously constructed the identification model for the program recording apparatus 1 has been described.

  However, the present invention is not limited to this, and as shown in FIG. 15, for example, an identification model is not constructed for the program recording device 1, and when the program recording device 1 is started for the first time, The desired sport type is designated, and the image feature amount is accumulated while recording the relay program of the designated desired sport type.

  Then, the program recording apparatus 1 generates an identification function when the predetermined period has elapsed or when a certain amount of image feature amount is accumulated, using the image feature amount accumulated up to that point together with the name of a desired sport item. Thus, an identification model may be constructed.

  In addition, after constructing the identification model in this way, the program recording apparatus 1 periodically confirms the identification accuracy and attempts to reconstruct the identification model in the same manner as in the above-described embodiment. May be rebuilt.

(2-2) Other embodiment 2
In the above-described embodiment, the case has been described in which the image feature amount of a desired sports event relay program is used for the reconstruction of the identification model.

  However, the present invention is not limited to this. For reconstructing the identification model, the image feature amount as the feature amount of the relay program, the audio feature amount extracted from the audio data, the caption data (closed caption) text data, and the program information are extracted. Various other information such as the name of the performer, detailed information on the relay program, broadcast time, broadcast station name, and the like can be used as the feature amount.

  In the case of such a configuration, the program recording apparatus 1 also records a digest program and identifies a desired sport item, together with the image feature amount of the digest program, the audio feature amount extracted from the audio data, and the caption (closed caption). ) Text data, names of performers extracted from program information, detailed information on relay programs, broadcast time, broadcast station name, and the like, various other information can be used as feature quantities.

(2-3) Other Embodiment 3
Furthermore, in the above-described embodiment, a case has been described in which a relay program of a desired sport item is recorded and used for reconstruction of an identification model.

  However, the present invention is not limited to this, and all sports program relay programs may be recorded and used to reconstruct the identification model.

  According to such a configuration, even if the user's preference for a sporting event changes, the user can again specify a desired sporting event and re-record the relay program without re-recording the relay program. The digest portion of the sport event can be identified along with the desired sport event.

(2-4) Other Embodiment 4
Furthermore, in the above-described embodiment, the case has been described in which the identification model is reconstructed after periodically confirming the identification accuracy, and the identification model is reconstructed periodically.

  However, the present invention is not limited to this. When a predetermined amount of image feature amount is accumulated or when the user requests to reconstruct the identification model, the identification model is reconstructed accordingly. You may make it do.

  By the way, when a predetermined amount of image feature amount is accumulated, according to the configuration in which the identification model is reconstructed accordingly, the accumulated image feature amount is too small and the desired sport item is defined. It is possible to prevent the identification model that can be identified with the above identification accuracy from being easily reconstructed.

  In addition, when the user is requested to execute reconstruction of the identification model, according to the configuration in which the reconstruction of the identification model is performed accordingly, for example, the user changes the angle by watching the relay program When it is built, the identification model can be reconstructed, and the angle change can be dealt with more quickly.

(2-5) Other Embodiment 5
Further, in the above-described embodiment, the extracted image data is sequentially extracted from the video data, and the image feature amount extracted from the extracted extracted image data is used for the construction of the feature amount database and the identification of the desired sport item. I mentioned the case.

  However, the present invention is not limited to this, and the image data for one frame is generated by synthesizing a predetermined number of image data of a predetermined interval or a continuous number of image data among a plurality of frames of image data constituting the video data. You may make it use the image feature-value extracted from image data for the construction of a feature-value database, or identification of a desired sport item.

  In the present invention, image feature amounts extracted from all the image data constituting the video data may be used for construction of feature amount databases and identification of desired sport items. The present invention can achieve the same effects as those of the above-described embodiments even with these configurations.

(2-6) Other embodiment 6
Furthermore, in the above-described embodiment, the case has been described in which the feature amount database is temporarily initialized by deleting the image feature amount each time the reconstruction process is executed.

  However, the present invention is not limited to this. Instead of deleting the image feature amount and initializing the feature amount database every time the reconstruction process is executed, the feature amount database is stored every time the reconstruction process is executed. In addition, a predetermined number of image feature amounts registered in the past may be sequentially searched from the image feature amount registered at the most current point in time and used for generation of an identification function.

(2-7) Other Embodiment 7
Further, in the above-described embodiment, when the reconstruction process is executed, if the identification accuracy of the desired sport item is lower than the specified level, the identification model is not reconstructed. The case where it waits for construction time was described.

  However, the present invention is not limited to this, and when the reconstruction process is executed, if the identification accuracy of a desired sport item is lower than the specified level, the identification model is temporarily reconstructed. Without waiting for the reconstruction time of the identification model, for example, once the reconstruction of the identification model is postponed, the relay program is newly recorded to accumulate the image feature amount, and a certain amount of image feature amount is accumulated. The reconstruction processing may be executed again using the image feature amount at the time when the predetermined date and time is reached, such as several days or one week from the start of accumulation.

  According to such a configuration, when the reconstruction process is executed, the identification model is reconstructed at the earliest possible point even if the identification model is not reconstructed because the identification accuracy of the desired sport item is lower than the specified level. It is possible to improve the identification accuracy for sports events.

(2-8) Other embodiment 8
Furthermore, in the above-described embodiment, the case where the support vector machine is used for the reconstruction of the identification model has been described.

  However, the present invention is not limited to this, and an identification model can be constructed and reconstructed using various other classification methods such as a neural network and a hidden Malcolm model.

(2-9) Other Embodiment 9
Further, in the above-described embodiment, the case where the identification model reconstructing apparatus according to the present invention is applied to the program recording apparatus 1 described above with reference to FIGS. 1 to 15 has been described.

  However, the present invention is not limited to this, and is connected to an information processing device such as a computer device or mobile phone having a program recording function, a PDA (Personal Digital Assistance), a game device, or a network, and constructs an identification model, By providing it to other devices that have already constructed an identification model, it can be widely applied to identification model reconstruction devices of various other configurations, such as a server device that reconstructs an identification model in the other device. be able to.

(2-10) Other Embodiment 10
Further, in the embodiment described above, the identification model reconstruction program according to the present invention is stored in the identification model reconstruction program stored in advance in the hard disk drive 3 or the non-volatile memory 4 of the program recording apparatus 1 described above with reference to FIGS. As described above, the control unit 2 of the program recording apparatus 1 executes the identification model reconstruction processing procedure RT1 described above with reference to FIG. 12 according to the identification model reconstruction program.

  However, the present invention is not limited to this, and the program recording apparatus 1 installs the identification model reconstruction program using a computer-readable recording medium in which the identification model reconstruction program is recorded, and the control unit 2 installs the identification model reconstruction program. The identification model reconstruction processing procedure RT1 described above with reference to FIG. 12 may be executed according to the identification model reconstruction program.

  Further, in the program recording apparatus 1, the identification model reconstruction program may be installed from the outside using a wired and wireless communication medium such as a local area network, the Internet, and digital satellite broadcasting.

  The computer apparatus-readable recording medium for installing the identification model restructuring program in the program recording apparatus 1 so as to be executable may be realized by a package medium such as a flexible disk.

  A computer-readable recording medium for installing the identification model restructuring program in the program recording apparatus 1 and making it executable is a package medium such as a CD-ROM (Compact Disc-Read Only Memory). It may be realized.

  Furthermore, as a computer-readable recording medium for installing the identification model reconstruction program in the program recording apparatus 1 and making it executable, it may be realized by a package medium such as a DVD (Digital Versatile Disc).

  Further, the computer-readable recording medium is not limited to a package medium, but may be realized by a semiconductor memory, a magnetic disk, or the like in which various programs are recorded temporarily or permanently.

  Further, as means for recording the identification model reconstruction program on these computer-readable recording media, wired and wireless communication media such as a local area network, the Internet, and digital satellite broadcasting may be used.

  Further, as a means for recording the identification model reconstruction program on a computer-readable recording medium, it may be recorded via various communication interfaces such as a router and a modem.

(2-11) Other Embodiment 11
Further, in the above-described embodiment, the case where the hard disk drive 3 described above with reference to FIGS. 1 to 15 is applied as a recording unit that records relay program data of a relay program that relays a sporting event is described. .

  However, the present invention is not limited to this, and recording units having various other configurations such as a semiconductor memory and an optical disk drive can be widely applied.

(2-12) Other Embodiment 12
Furthermore, in the above-described embodiment, a description will be given of a case where the control unit 2 described above with reference to FIGS. 1 to 15 is applied as a feature amount extraction unit that extracts a feature amount from relay program data recorded in the recording unit. It was.

  However, the present invention is not limited to this, and various other features such as a CPU (Central Processing Unit) and a feature amount extraction circuit having a hardware circuit configuration for extracting feature amounts from relay program data recorded in a recording unit. It is possible to widely apply the feature amount extraction unit having the configuration described above.

(2-13) Other Embodiment 13
Further, in the above-described embodiment, a description will be given of a case where the hard disk drive 3 described above with reference to FIGS. 1 to 15 is applied as a storage unit that stores the feature amount extracted from the relay program data by the feature amount extraction unit. It was.

  However, the present invention is not limited to this, and recording units having various other configurations such as a semiconductor memory and an optical disk drive can be widely applied.

(2-14) Other Embodiment 14
Furthermore, in the above-described embodiment, the feature amount stored in the storage unit is used together with the name of the corresponding sport item, and the digest program data of the digest program that broadcasts a plurality of sport event digests in order is included with the sport event. The case where the control unit 2 described above with reference to FIGS. 1 to 15 is applied as the model reconstruction unit that reconstructs the identification model for identifying the digest part of the digest of the sport event has been described.

  However, the present invention is not limited to this, and digest program data of a digest program that sequentially broadcasts digests of a plurality of sports items using the feature amounts stored in the CPU or storage unit together with the names of the corresponding sports items. In addition to sports events, there are a wide variety of model reconstruction units with various configurations such as a model reconstruction circuit with a hardware circuit configuration that reconstructs an identification model for identifying the digest portion of the digest of the sport event. Can be applied.

(2-15) Other Embodiment 15
Further, in the above-described embodiment, as the item identification unit that uses the identification model and identifies the sport item of the relay program using the feature amount of the relay program that is not used for the reconstruction of the identification model, FIG. The case where the control unit 2 described above with reference to FIG. 15 is applied has been described.

  However, the present invention is not limited to this, and a hardware circuit that uses a CPU or an identification model to identify a sport item of the relay program using a feature amount of the relay program that is not used for reconstructing the identification model In addition to the configuration item identification circuit, various other configuration item identification units can be widely applied.

(2-16) Other Embodiment 16
Further, in the above-described embodiment, the control unit 2 described above with reference to FIGS. 1 to 15 is applied as the correct rate detection unit that detects the identification correct rate of the sport item identified for a plurality of relay programs by the event identification unit. The case was described as above.

  However, the present invention is not limited to this, such as a correct rate detection circuit of a hardware circuit configuration that detects the correct rate of identification of sports items identified for a plurality of relay programs by the CPU or the event identifying unit, etc. A correct rate detection unit with various configurations can be widely applied.

(2-17) Other Embodiment 17
Furthermore, in the above-described embodiment, when the identification model is reconstructed by the model reconstructing unit, the feature quantity accumulated in the accumulating unit up to the time of the reconstructing is deleted and the accumulating unit is initialized once The case where the control unit 2 described above with reference to FIGS. 1 to 15 is applied as the initialization unit is described.

  However, the present invention is not limited to this, and when the identification model is reconstructed by the CPU or the model reconstructing unit, the feature amount accumulated in the accumulating unit up to the time of the reconstructing is deleted, and the accumulating unit In addition, initialization units having various configurations can be widely applied, such as an initialization circuit having a hardware circuit configuration that temporarily initializes.

  INDUSTRIAL APPLICABILITY The present invention can be used for an identification model reconstruction device such as a program recording device, a computer device, or a portable playback device that can record a relay program.

It is a block diagram which shows one Embodiment of the circuit structure of the program recording apparatus by this invention. It is a basic diagram which shows the structure of a digest program. It is a basic diagram with which it uses for description of the identification of the sport item with respect to the digest of a digest program. It is an approximate line figure used for explanation of detection of a shot part. It is a basic diagram with which it uses for description of the sport item of an image unit and a shot unit. It is an approximate line figure used for explanation of generation of reproduction section information. It is an approximate line figure used for explanation of construction of a feature-value database. It is a basic diagram with which it uses for description of confirmation of the identification accuracy with respect to a desired sport item. It is an approximate line figure used for explanation of reconstruction of an identification model. It is a basic diagram with which it uses for description of the sport item of the image unit and shot unit using the identification model after a reconstruction. It is a basic diagram with which it uses for description of the identification of the sporting event with respect to the digest of the digest program using the identification model after a reconstruction. It is a flowchart which shows an identification model reconstruction process procedure. It is a flowchart which shows a database construction process subroutine. It is a flowchart which shows a digest selection reproduction | regeneration processing procedure. It is a basic diagram with which it uses for description of reconstruction of the identification model by other embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Program recording apparatus, 2 ... Control part, 3 ... Hard disk drive, 4 ... Non-volatile memory, RT1 ... Identification model reconstruction process procedure, SRT1 ... Database construction process subroutine.

Claims (9)

A recording unit that records relay program data of a relay program that relays a sporting event;
A feature amount extraction unit that extracts a feature amount from the relay program data recorded in the recording unit;
A storage unit that stores the feature amount extracted from the relay program data by the feature amount extraction unit;
The feature amount stored in the storage unit is used together with the name of the corresponding sport event, and the digest program data of a digest program that sequentially broadcasts a digest of a plurality of sport events, together with the sport event, An identification model reconstruction device comprising: a model reconstruction unit that reconstructs an identification model for identifying a digest portion of the digest. Using the identification model, an item identification unit for identifying the sport item of the relay program using the feature quantity of the relay program that is not used to reconstruct the identification model;
A correct rate detection unit that detects the correct rate of identification of the sport item identified for the plurality of relay programs by the event identification unit,
The model rebuilding unit
The feature model stored in the storage unit is used together with the name of the corresponding sport event to provisionally construct the identification model, and the event identification unit uses the provisionally constructed identification model to generate a plurality of relays. The sports item of the program is identified, and the correct answer rate detection unit detects the correct answer rate detected for the sport event of the plurality of relay programs identified by the provisionally constructed identification model is greater than or equal to a specified correct answer rate. The identification model reconstructing apparatus according to claim 1, wherein the identification model is reconstructed by updating the identification model before reconstruction to the provisionally constructed identification model. The event identification part
Using the identification model before the reconstruction, identifying the sport item of the relay program using the feature amount of the relay program that is not used for the reconstruction of the identification model,
The accuracy rate detection unit is
The identification identification rate of the sports item identified for the plurality of relay programs using the identification model before the reconstruction by the event identification unit is detected,
The model rebuilding unit
If the identification accuracy rate detected by the accuracy rate detection unit is lower than the specified accuracy rate, the feature model stored in the storage unit is used together with the name of the corresponding sport item to temporarily use the identification model. The identification model reconstruction device according to claim 2 to be constructed. The model rebuilding unit
The identification accuracy rate detected for the sport item of the plurality of relay programs identified by the provisional construction identification model by the accuracy rate detection unit is the identification model before the reconstruction as the specified accuracy rate. The identification model is reconstructed by updating the identification model before the reconstruction to the provisionally constructed identification model if the identification accuracy rate is equal to or higher than the identification accuracy rate detected for the sport item of the plurality of identified relay programs The identification model reconstruction apparatus according to claim 3. The model rebuilding unit
The identification model reconstructing apparatus according to claim 4, wherein the identification model is temporarily constructed by periodically using the feature amount accumulated in the accumulation unit together with a name of the corresponding sport item. The event identification part
A plurality of items that are not used for reconstructing the identification model at regular intervals with a period shorter than the period in which the identification model is provisionally reconstructed periodically by the model reconstruction unit. The identification model reconstructing device according to claim 5, wherein the sports item of the relay program is identified using the feature amount of the relay program. When the identification model is reconstructed by the model reconstructing unit, an initialization unit that erases the feature quantity accumulated in the accumulating unit up to the time of the reconstruction and initializes the accumulating unit once The identification model reconstructing device according to claim 6. Recording relay program data of a relay program that relays a sporting event, extracting a feature value from the recorded relay program data, and storing the feature value extracted from the relay program data;
The digest of the digest of the sport event together with the sport event in the digest program data of the digest program that broadcasts the digest of a plurality of sport events in order using the accumulated feature quantity together with the name of the corresponding sport event. An identification model reconstruction method comprising: a model reconstruction step of reconstructing an identification model for identifying a part. Computer equipment,
Recording relay program data of a relay program that relays a sporting event, extracting a feature value from the recorded relay program data, and storing the feature value extracted from the relay program data;
The digest of the digest of the sport event together with the sport event in the digest program data of the digest program that broadcasts the digest of a plurality of sport events in order using the accumulated feature quantity together with the name of the corresponding sport event. An identification model reconstruction program for executing a model reconstruction step for reconstructing an identification model for identifying a part.

Images