JP2006139829A - Summary reproducing device, summary reproducing method, summary reproducing program, and information recording medium with the program stored thereto - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a information summary reproducing device capable of executing summary reproduction, without reducing viewing and listening will of operator's. <P>SOLUTION: An information recording/reproducing device 100 records content data as well as feature quantity data in the content data, when recording received content data in a DVD 10 or HD 20, and manages reproduction frequency of the content data, when the content data are reproduced. When summary reproduction is conducted, the information recording/reproducing device 100 determines the frequency of reproduction of the content data, and a part required for the summary reproduction of the content data to be reproduced based on the feature quantity data recorded together with the content data, and performs summary reproduction based on the part of the content data determined. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to the technical field of an information summary playback apparatus that creates a summary of content data mainly composed of video information such as a television broadcast program and provides the summary to a user.

  In recent years, content data mainly composed of video information, such as television broadcast programs, has been routinely recorded and played back, and content data such as VTR (Video Tape Recorder) has been recorded and played back. Recording apparatuses that perform the above are widely used. Recently, due to the increase in recording capacity in these recording devices, not only the content data that the user wants to watch is necessarily recorded, but also the content data according to the user's taste is temporarily recorded using keywords or the like. Recording apparatuses that determine whether or not to view the recorded content data after recording have also been put into practical use.

  In such a situation, in order to organize or confirm the recorded content data, video information that summarizes the video information in a short time (hereinafter referred to as summary information) is provided without viewing all the recorded video information. A digest playback apparatus that performs digest playback (hereinafter also referred to as summary playback) is known. In particular, as an information summary playback device that performs such summary playback, a scene (scene) to be played back is determined based on the importance of the video that is predetermined by the characteristics of the content data such as the content data attributes, Summary playback is performed.

Specifically, the information summary playback apparatus acquires broadcast program title name information, attributes, broadcast program-specific content management information such as start time or end time, and performs summary playback based on the content management information. The video data portion to be played is determined in advance for time distribution data that is specified in advance, and the summary playback of the content data of the broadcast program acquired by broadcasting based on the determined time distribution data Data (hereinafter referred to as summary reproduction data) is generated (for example, Patent Document 1).
JP 2003-125356 A

  However, in such a conventional information summary reproduction device, in principle, the same summary reproduction data is generated for the same content data, and the number of times the content data is viewed, etc. It is not possible to perform summary playback according to the viewing status of the operator.

  That is, when the operator desires summary playback, the conventional information summary playback device is content data that has been viewed by the operator in the past, or content data that has not been viewed yet. Even if there is, the same summary reproduction is performed. Therefore, since the information summary playback device does not consider the viewing status of the operator, such as providing the end of the content data even when the content data has not been viewed yet, the summary playback is not performed. Depending on the contents, there is a possibility that the operator's viewing interest will be halved.

  In view of the above problems, an object of the present invention is to provide an information summary reproducing apparatus capable of executing summary reproduction without reducing the operator's willingness to view.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a digest playback apparatus that performs playback while reducing the time length of the playback time of content data recorded in advance on a recording medium, the recording Management means for managing the number of reproductions of content data recorded on a medium; recognition means for recognizing the number of reproductions of the content data managed by the management means when summary reproduction is instructed; Determining means for determining weighted data that changes as the playback of content data progresses based on the number of playbacks performed, and specifying a playback section to be used for summary playback in the content data based on the determined weighted data Specifying means for reproducing, and reproducing means for reproducing the recorded content data based on the specified reproduction section It has a configuration comprising a.

  The invention according to claim 9 is a summary reproduction method for reproducing a content data recorded in advance on a recording medium by reducing the time length in the reproduction time, and the content recorded on the recording medium When summary reproduction is instructed when the number of data reproductions is managed, a content recognition process for recognizing the number of reproductions of the managed content data and a content based on the recognized number of reproductions A determining step for determining weighted data that changes as data playback progresses, a specifying step for specifying a playback section used for summary playback in the content data based on the determined weighted data, and the specified A playback step of playing back the stored content data based on a playback section.

  The invention according to claim 10 or 11 is a summary reproduction program for reproducing by shortening the time length of the reproduction time of content data recorded in advance on a recording medium by a computer. Recognizing means for recognizing the number of reproductions of the managed content data when the summary reproduction is instructed when the number of reproductions of the recorded content data is managed; Determining means for determining weighted data that changes with the progress of playback of the content data based on the number of times of playback, and specifying the playback section used for summary playback in the content data based on the determined weighted data Means for storing the stored content data based on the specified playback section; It has a structure to be viable reproducing means functions as a.

  Hereinafter, embodiments of the present application will be described with reference to the drawings.

  In the embodiment described below, information including a hard disk (hereinafter referred to as “HD”) and a DVD (Digital Versatile Disc) drive on which recording and reading of content data including audio data and video data is executed. This is an embodiment in which the summary playback device of the present application is applied to a recording / playback device. In the following, a broadcast program indicates content provided from each broadcast station via a broadcast wave, and in the embodiment described below, data of the broadcast program (hereinafter referred to as broadcast program data) is used. I will explain.

  First, the overall configuration and outline operation of the information recording / reproducing apparatus will be described with reference to FIGS. FIG. 1 is a block diagram showing a schematic configuration of an information recording / reproducing apparatus according to the present application, and FIG. 2 is a diagram for explaining feature amount data detected by a feature amount extraction unit. FIG. 3 is an example of a data structure diagram of summary reproduction management information generated by the recording control unit of the present embodiment and recorded on a DVD or HD.

  The information recording / reproducing apparatus 100 according to the present embodiment receives broadcast waves transmitted from each broadcasting station as content data, and records the received content data on the DVD 10 or the HD 20. The information recording / reproducing apparatus 100 is connected to an external device (not shown) via the output terminals T1 and T2. When reproducing the content data, the information data is reproduced and combined with the external device. It is output as an audio signal.

  On the other hand, the information recording / reproducing apparatus 100 performs summary reproduction by reducing the time length of the content data by summarizing the recorded content data. In particular, when the received content data is recorded on the DVD 10 or the HD 20, the information recording / reproducing apparatus 100 records feature amount data (hereinafter referred to as feature amount data) in the content data together with the content data. Thus, summary reproduction is performed based on the recorded feature amount data and the number of reproductions described later.

  The information recording / reproducing apparatus 100 manages the number of reproductions of the content data when performing normal reproduction in which the content data is reproduced according to the reproduction time. A portion necessary for summary playback of content data to be played back is determined based on the number of times of data playback and feature data recorded together with the content data, and the summary playback is performed based on the determined content data portion. It has become.

  As shown in FIG. 1, the information recording / reproducing apparatus 100 that performs such an operation performs a TV receiving unit 110 that receives a broadcast wave as content data via an antenna AT, and performs input processing on the received content data. An input processing unit for video data 120 and an input processing unit for audio data 130 to be performed, a feature amount extraction unit 140 for extracting feature amounts from the received content data, and a recording control unit 150 for performing recording control of content data to be recorded. An HD 160 having an encoder 160 for converting the content data into a predetermined signal format when recording the content data, a DVD drive 170 for mounting the DVD 10 on which the content data is recorded, and an HD 20 on which the content data is recorded. 180.

  The information recording / reproducing apparatus 100 controls reproduction of content data recorded on the DVD 10 or the HD 20, in particular, summary reproduction, and also manages a reproduction control unit 190 for managing reproduction of the content data, and content data A decoder 200 that combines the content data into a predetermined data format at the time of reproduction, an NTSC converter 210 that converts the decoded data into an NTSC signal and outputs it to an external device, and an OSD (On screen) for the output video signal And an OSD unit 220 that performs (Display) processing.

  On the other hand, the information recording / reproducing apparatus 100 includes an operation unit 240 that performs various setting operations for recording and reproducing content data, a system control unit 250 that controls each unit, and a ROM / RAM 260. The system control unit 250 is connected to the operation unit 240 and other members via the bus B.

  For example, the feature amount extraction unit 140 of the present embodiment constitutes a detection unit of the present invention, and the recording control unit 150 constitutes a recording control unit of the present invention. Also, for example, the playback control unit 190 of the present embodiment constitutes management means, storage means, recognition means, determination means, identification means, and playback means of the present invention, and the decoder 200 constitutes playback means of the present invention. .

  The TV receiving unit 110 receives broadcast waves transmitted from each broadcasting station via the antenna AT, for example, RF signals such as VHF (Very High Frequency) broadcast or BS (Broadcasting Satellite) digital broadcast. The signal wave received in synchronization with the reception band selected by the user is converted into an IF (intermediate frequency) signal. The TV receiver 110 demodulates the converted IF signal into a TV video signal and an audio signal (hereinafter simply referred to as a TV signal), and converts the TV signal into a normal video such as an NTSC signal. Content data is generated by performing a decoding process on the signal. Then, the TV receiving unit 110 outputs the video data in the generated content data to the video data input processing unit 120, and outputs the audio data in the refined content data to the audio data input processing unit 130. It is like that.

  When receiving a broadcast wave provided by digital, the TV receiving unit 110 maintains the data format of the digital signal, and stores the content in the video data input processing unit 120 or the audio data input processing unit 130. Data is output.

  On the other hand, when the received broadcast wave is accompanied by content management information for managing content data such as broadcast time and broadcast time, the TV receiving unit 110 detects the content management information from the signal wave. The detected content management information is output to the recording control unit 150 via the bus B.

  For example, when the broadcast wave is a BS digital broadcast, the TV receiver 110 receives data describing predetermined information about content data in the broadcast wave, which is called metadata, separately from the content data. The TV receiving unit 110 outputs the received metadata to the recording control unit 150 as content management information.

  The metadata includes information on the channel on which the content data is broadcast, the broadcast start time and end time, the total time of the content data, the genre of the content data (hereinafter also referred to as an attribute), a title, Various data related to the advertisement information such as various data related to the content data such as performers and the insertion time of the advertisement information inserted when the content data is played back are included.

  The video data input processing unit 120 is input with video data in the content data. The video data input processing unit 120 converts the input content data into a predetermined format. Alternatively, predetermined processing such as A / D conversion for converting an analog signal into a digital signal is performed, and the video data subjected to the predetermined processing is output to the encoder 160 via the bus B. ing.

  For example, the video data input processing unit 120 of the present embodiment digitizes input content data, and is an ITU-R (International Standard for Television Broadcasting) component signal interface established by the International Telecommunications Union. Telecommunications Union Radiocommunication sector) Bt. The video data is converted into the 656 format, and the converted video data is output to the encoder 160.

  The audio data input processing unit 130 receives audio data in the content data. The video data input processing unit 120 converts the input content data into a predetermined format. Alternatively, predetermined processing such as digital / analog conversion (hereinafter referred to as A / D conversion) for converting an analog signal into a digital signal is performed. Also, the audio data input processing unit 130 outputs content data that has been subjected to predetermined processing to the encoder 160 and the feature amount extraction unit 140.

  For example, the video data input processing unit 120 of the present embodiment digitizes the input content data, and uses the data communication method of the standard I2S (The Inter-IC Sound) related to the digital audio interface. The converted audio data is output to the encoder 160 and the feature amount extraction unit 140.

  The feature amount extraction unit 140 is input with sound data converted into a predetermined digital data format. The feature amount extraction unit 140 receives the input sound under the control of the recording control unit 150. A process of detecting a voice section of content data having a volume level equal to or higher than a predetermined volume level as a threshold for data and a volume level value of the voice section (hereinafter referred to as detection process). ) The feature amount extraction unit 140 outputs the detected reproduction time and volume level value as feature amount data to the recording control unit 150 via the bus B.

  Specifically, in the feature amount extraction unit 140, a plurality of different sound volume levels are set in advance as threshold values, and a noise level for detecting a rising section of content data (hereinafter referred to as a noise section) and content The sound in the data becomes silent, and a silence level is set for detecting a section (hereinafter referred to as a silent section) that indicates a section of the content data. Further, the feature amount extraction unit 140 reproduces a playback time when the threshold value is exceeded as a speech section of the noise level (hereinafter referred to as a noise section start time) and thereafter a playback time when the threshold value is equal to or less than the threshold (hereinafter referred to as the end of the noise section). Or the playback time when the sound level falls below the threshold as the voice section of the silence level (hereinafter referred to as the silence period start time) and the playback time when the threshold is exceeded (hereinafter referred to as the silence period end time). And the volume level value of each voice section is detected.

  For example, when the voice data shown in FIG. 2A is input, the feature amount extraction unit 140 according to the present embodiment, as shown in FIG. The start time and end time of the silent section and the volume level value in the voice section are detected as feature amount data.

  In addition, the feature amount extraction unit 140 according to the present embodiment calculates an average value of sound volume level values in a noise section and a silent section, and outputs the calculated average value as a sound volume level value. ing.

  The content control information extracted from the broadcast wave via the bus B and the feature amount data extracted by the feature amount extraction unit 140 are input to the recording control unit 150. In addition, the recording control unit 150 controls information (for managing summary playback required for summary playback based on the input content management information and feature amount data under the control of the system control unit 250). (Hereinafter referred to as summary playback management information) is generated. While controlling the recording of the content data, the summary playback management information thus generated is associated with each content data and the DVD drive 170 or HD drive 180 is set. Via the DVD 10 or the HD 20.

  Specifically, the recording control unit 150 of the present embodiment, when recording content data on the DVD 10 or the HD 20, shows information indicating the attribute of the content data to be recorded from the input content management information (hereinafter referred to as attribute information). .) Is extracted. In addition, the recording control unit 150 generates information indicating the start time, end time, and volume level value (hereinafter referred to as audio section information) for each audio section of the content data based on the input feature data. In addition, summary playback management information is generated by attaching playback count information indicating the playback count when the content data is played back to the generated audio section information and extracted attribute information.

  For example, in the present embodiment, as shown in FIG. 3, the recording control unit 150 includes a start time information area A1 and an end time information area in which start time information and end time information of a section having a noise level or a silence level are recorded. Noise section information and silence section information having A2, a volume level value area A3 where the volume level value is recorded, and A4 where the number of sections recorded in each voice section (hereinafter also referred to as the number of information) is recorded are generated. Then, along with the extracted attribute information and playback count information, summary playback management information having each of the generated speech section information is generated. The recording control unit 150 according to the present embodiment records the generated summary reproduction management information on the DVD 10 or HD 20 via the DVD drive 170 or HD drive 180 in association with each content data.

  Note that the recording control unit 150 according to the present embodiment generates summary reproduction management information having reproduction number information indicating “0 times” when the received content data is recorded on the DVD 10 or the HD 20. .

  In addition, when generating the summary reproduction management information, the recording control unit 150 calculates an average value of the volume level for each predetermined time interval in each voice section as the volume level value, and uses the calculated volume level. The summary reproduction management information is generated together with the start time and end time of the voice section.

  The encoder 160 is input with the input video and audio data and the summary reproduction management information generated by the recording control unit 150. The encoder 160 is controlled by the recording control unit 150. Based on the above, the input content data is encoded into a predetermined compressed data format, and a program stream is generated based on the content data encoded in the predetermined format. The encoder 160 outputs the generated program stream to the DVD drive 170 or the HD drive 180.

  For example, the encoder 160 according to the present embodiment encodes input video data and audio data according to an MPEG (Moving Picture Coding Experts Group) system, and multiplexes the encoded video data and audio data ( The program stream is generated by multiplexing, and the generated program stream is output from the DVD drive 170 or the HD drive 180 and recorded on the DVD 10 or the HD 20.

  The DVD drive 170 has a structure in which the DVD 10 can be attached and detached, and also has a DVD drive interface compliant with a standard such as ATAPI (AT Attachment Packet Interface). In addition, the DVD drive 170 performs input / output switching related to content data to be recorded on the DVD 10 or content data to be read from the DVD 10, and accompanying recording / reproduction control of the DVD 10 under the control of the system control unit 250. It has become.

  Specifically, the DVD drive 170 attaches the summary reproduction management information to the encoded program stream under the control of the system control unit 250, and records the program stream to which the summary reproduction management information is attached on the DVD 10. It is like that. In addition, the DVD drive 170 reads a program stream attached with summary playback management information from the DVD 10 under the control of the system control unit 250, outputs the program stream to the decoder 200, and outputs the summary playback management information to the playback control unit. 190 is output.

  The HD drive 180 has an HD 20 inside and an HD drive interface conforming to a standard such as ATAPI, and content data to be recorded on the HD 20 under the control of the system control unit 250 as with a DVD drive. Alternatively, input / output switching relating to data of content data read from the HD 20 and control of recording / reproduction of the HD 20 associated therewith are performed.

  The playback control unit 190 controls playback of content data recorded on the DVD 10 or HD 20 under the control unit of the system control unit 250, and the content data instructed by the operation unit 240 is received from the DVD 10 or HD 20. Reading control is performed, and the read content data is output to an external device via the decoder 200 and the NTSC conversion unit 210. In particular, when playing back the content data, the playback control unit 190 overwrites the playback count information in the summary playback management information recorded in association with the content data to be played back on the DVD 10 or HD 20. Yes.

  Further, the playback control unit 190 has template data (hereinafter referred to as template data) for specifying the playback portion for each attribute and the number of playback times, which is necessary when performing summary playback of content data. When summary playback is instructed via the operation unit 240, the summary playback management information recorded together with the content data to be played back is read, and the summary is based on the read summary playback management information and the template data. Playback control of playback is performed.

  The configuration of the playback control unit 190 and details of playback control of summary playback in this embodiment will be described later.

  When the normal reproduction or summary reproduction of the content data recorded on the DVD 10 or the HD 20 is executed, the decoder 200 is read from the DVD 10 and the HD 20 and receives the program stream content data. Yes. In addition, the decoder 200 separates the input program stream into audio data and video data under the control of the reproduction control unit 190, and performs predetermined processing such as decoding processing on each of these data. Video data and audio data in the content data are generated. The decoder 200 outputs the generated video data and audio data to the NTSC converter 210.

  The NTSC conversion unit 210 is input with the decoded video data and audio data and the display data generated by the OSD unit 220. The NTSC converter 210 converts the input video data and audio data into an NTSC format signal format, and superimposes the input display data on the converted video signal. The NTSC converter 210 outputs the video signal on which the display data is superimposed and the audio signal whose signal format is converted to the external device connected via the video signal output terminal T1 and the audio signal output terminal T2. It has become.

  For example, in the present embodiment, a monitor having a function of amplifying sound is connected as an external device, and the video signal or the audio signal output from the NTSC conversion unit 210 is amplified by the monitor. And to display.

  The OSD unit 220 generates display data to be superimposed on a video signal output to an external device such as character information under the control of the reproduction control unit 190, and displays the generated display data such as character information. The data is output to the NTSC converter 210.

  The operation unit 240 includes a remote control device having a large number of keys such as various confirmation buttons, selection buttons, and numeric keys, and a light receiving unit that receives signals transmitted from the remote control device, or various confirmation buttons, selection buttons, and numbers. It is constituted by an operation panel having a large number of keys such as keys. The operation unit 240 is used for various instructions when recording or reproducing the content data and for instructing the summary reproduction.

  The system control unit 250 reads out a control program stored in the ROM / RAM 260 and executes each process, and temporarily holds the data being processed in the ROM / RAM 260, whereby content data is stored in the DVD 10 or HD 20. Recording processing for recording, playback processing for playing back content data from the DVD 10 or HD 20, and summary playback processing for controlling summary playback based on feature amount data and the number of playbacks (hereinafter referred to as summary playback processing). ) Is controlled.

  Next, the configuration of the playback control unit 190 of this embodiment and details of the summary playback process will be described with reference to FIGS. FIG. 4 is a block diagram showing a configuration of the reproduction control unit 190 in the present embodiment, and FIGS. 5 and 6 are examples of template data stored in the data storage unit 193. FIG. 7 is a diagram for explaining a playback section determined by the playback section determination unit 195.

  As described above, the playback control unit 190 performs (1) normal playback control of content data recorded on the DVD 10 or HD 20, and (2) normal playback of the content data (hereinafter referred to as normal playback). Management of the number of times of playback and (3) playback control in content data summary playback.

  Specifically, as shown in FIG. 4, the reproduction control unit 190 includes a data reproduction unit 191 that controls normal reproduction of content data, a reproduction number management unit 192 that manages the number of reproductions during normal reproduction, And performs various controls during normal playback.

  Further, the reproduction control unit 190 includes a data storage unit 193 that stores template data used when summary reproduction is performed, a template data determination unit 194 that determines the template data, and a reproduction section of content data during summary reproduction. And a summary playback unit 196 that controls summary playback based on the determined playback section, and performs various controls when performing summary playback.

  Note that, for example, the playback count management unit 192 of the present embodiment constitutes the management means of the present invention, and the data storage unit 193 constitutes the storage means of the present invention. Further, for example, the template data determination unit 194 of the present embodiment constitutes a recognition unit and a determination unit of the present invention, and the reproduction section determination unit 195 configures a specification unit of the present invention. Further, for example, the summary playback unit 196 of the present embodiment constitutes playback means of the present invention.

  The data reproduction unit 191 is recorded on the DVD 10 or HD 20 already selected by the operation unit 240 under the control of the reproduction control unit 190 in conjunction with the DVD drive 170 or the HD drive 180, the decoder 200, and the NTSC conversion unit 210. The normal playback is controlled so that the one content data is played back in order from the top. Specifically, the data reproduction unit 191 causes the decoder 200 to read content data instructed by the operation unit 240 from the DVD 10 or the HD 20 via the DVD drive 170 and the HD drive 180, and the read content data. Are output to an external device via the NTSC converter 210.

  On the other hand, the data reproduction unit 191 selects normal content data recorded on the DVD 10 or the HD 20 by the operation unit 240 and performs normal reproduction on the reproduction number management unit 192 when controlling normal reproduction of the content data. Outputs that it will be done.

  Note that the data playback unit 191 of the present embodiment controls, as normal playback control, forward playback that plays back content data in order from the beginning, reverse playback that plays back the playback time of content data, and playback speed. Includes playback controls such as special playback to speed up or slow down.

  When the normal reproduction of content data is performed, the reproduction count management unit 192 is input that the normal reproduction output from the data reproduction unit 191 is performed. In addition, when the fact that the normal reproduction is performed is input, the reproduction count management unit 192 acquires the summary reproduction management information extracted by the decoder 200 in the content data to be subjected to the normal reproduction. Then, the playback count management unit 192 recognizes the playback count of the current content data based on the playback count information described in the acquired summary playback management information, and adds “1” to the recognized playback count. Then, the summary reproduction management information in which the reproduction number information is rewritten is output to the DVD drive 170 or the HD drive 180.

  Note that the DVD drive 170 or the HD drive 180 to which the summary playback management information in which the playback count information is rewritten is input is a recording area of the DVD 10 or HD 20 to which the summary playback management information belongs, that is, the summary playback management information is recorded. Overwrite recording is performed in the area that was previously stored.

  The data storage unit 193 stores in advance a plurality of template data used when performing summary reproduction. The data storage unit 193 satisfies a predetermined condition by the summary reproduction unit 196 when summary reproduction is performed. Template data to be searched is searched.

  Here, template data stored in the data storage unit 193 will be described.

  Each template data stored in advance in the data storage unit 193 is weighting data for controlling the importance of the content data in the detected audio section, and is associated with the number of reproductions and the attribute and the content data The data changes with the reproduction time, that is, with the progress of reproduction of the content data.

  Specifically, in the present embodiment, as shown in FIGS. 5 and 6, the template data uses a percentage of a value indicating the weight of weighting on the vertical axis (hereinafter referred to as a weight value), and A value indicating the time axis as a percentage on the horizontal axis is used, and the weight value is stored in association with the number of times of reproduction and attributes as data that changes as the reproduction proceeds.

  For example, the template data shown in FIG. 5A indicates that the weight value is 100% from the beginning of the content data to 70% of the entire content data, and the reproduction time is 70% of the entire content data. The subsequent weight value is reduced, and the weight value after the reproduction time is 80% of the entire content data is “zero”. The template data is stored in the data storage unit 193 in association with the attribute of a story (story) format such as “drama” or “movie” with the number of times of reproduction being “0”.

  Further, the template data shown in FIG. 5B is data in which the weight value indicates 100% from the beginning to the end of the reproduction time of the content data. The template data has the number of times of reproduction “1”, the attribute is associated with a story (story) format such as “drama” or “movie”, or the number of times of reproduction is “one or more times”. , Stored in the data storage unit 193 in association with attributes of the “news” format.

  Furthermore, in the template data shown in FIG. 5B, the content data reproduction time changes from 40% to 100% from the beginning to 60% of the entire content data, and the reproduction time of the content data is the whole. The weight value after 60% is data indicating 100%. The template data is stored in the data storage unit 193 in association with an attribute of a story (story) format such as “drama” or “movie” having the number of reproductions “3 times or more”.

  On the other hand, the template data shown in FIG. 6A indicates that the weight value is 100% from the beginning of the content data to 20% of the whole content data, and the reproduction time is 20% of the whole. Data with subsequent weight values of 10%. The template data is stored in the data storage unit 193 in association with the attribute of “sports” or “information program” with the number of times of reproduction being “0”.

  Further, the template data shown in FIG. 6B indicates that the weight value is 10% from the beginning of the content data to 80% of the entire content data, and the reproduction time is 80% of the entire content data. Data with subsequent weight values of 100%. The template data is stored in the data storage unit 193 in association with the attribute of “sports” with the number of times of reproduction being “1 or more”.

  Furthermore, in the template data shown in FIG. 6C, the reproduction time of the content data is from the top to 20% of the entire content data, and the weight value from 80% to the end of the entire content data is 100%. In addition to the above, the weight value of other reproduction times is 10%. The template data is stored in the data storage unit 193 in association with the attribute of “information program” having the number of reproductions “1 or more”.

  The template data shown in FIG. 5 and FIG. 6 is template data used for the noise section, and the template data used for the silent section is, for example, a weight value of 50% in each template data of the noise section. Data indicated by a line-symmetric graph with respect to the straight line formed in this way is used.

  When content data summary playback is performed, the template data determination unit 194 reads summary playback management information of content data for which summary playback is performed, based on the control of the summary playback unit 196, and displays playback count information and attribute information. To get. Further, the template data determination unit 194 searches the data storage unit 193 based on the acquired reproduction count information and attribute information, and based on the reproduction count indicated by the reproduction count information and the attribute indicated by the attribute information. Thus, one template data is determined for each noise section and silent section, and the determined template data is output to the playback section determination unit 195 via the bus B.

  When the content data summary playback is performed, the playback section determination section 195 receives the template data determined by the template determination section. The playback section determination section 195 includes the summary playback section. Based on the control of 196, the summary playback management information of the content data to be subjected to the summary playback is acquired, the playback section of the content data is determined, and the determined section is output to the summary playback unit 196 as section information. It has become.

  Specifically, the playback section determination unit 195 acquires the summary management information of the content data to be subjected to the summary playback when the summary playback of the content data is performed under the control of the summary playback unit 196, and the noise section information And each voice section information of silence section information is extracted. In addition, the playback section determination unit 195 sets the start time of the input template data based on the start time of each voice section recorded in the voice section information for each piece of extracted voice section information. A section having a weight value multiplied by the volume level value of each section, and the multiplied value (hereinafter referred to as volume level multiplication value) having a predetermined value (hereinafter referred to as section determination threshold) or more or less. Are determined to be sections used for digest playback (hereinafter referred to as determined playback sections). Then, the playback section determination unit 195 sends the determined time information to the summary playback unit 196 as a part of the content data used in the summary playback from the start time or end time of the determined section. It is designed to output.

  Also, the playback section determination unit 195 determines a section having a predetermined value or more as the volume level multiplication value of the noise section as a section used for summary playback, and the summary playback section 196 uses the start time of the section as time information. To output. On the other hand, the playback section determination unit 195 determines a section having a value equal to or lower than a predetermined value for the volume level multiplication value of the silent section as a section used for summary playback, and uses the end time of the section as time information to summarize playback section 196. To output.

  For example, as shown in FIG. 7, when content data having audio data D1 is summarized and reproduced, the template data deciding unit 194 uses the template data TD shown in FIG. When determined, the reproduction section determination unit 195 of the present embodiment multiplies the audio data by the template data to calculate audio data D2 shown in FIG. Therefore, as shown in FIG. 7, even when a noise section is detected based on a preset noise level in the feature amount extraction unit 140, the playback section determination unit 195 performs the audio data to which the template data is applied. D2 is equal to or less than the section determination threshold, and section 3 is not determined as the determined playback section. That is, the playback section determination unit 195 determines section 1 and section 2 as determined playback sections.

  FIG. 7 is merely a diagram for explaining the determination process of the determined playback section in the playback section determination unit 195. The playback section determination unit 195 of the present embodiment is actually extracted by the feature amount extraction unit 140. The determined reproduction section is determined by performing the above-described calculation on the noise section and the silent section.

  The summary playback unit 196 controls each unit of the playback control unit 190 when summary playback of content data is performed. When the time information determined by the playback section determination unit 195 is input, The content data of a predetermined time from the time indicated by the time information is extracted in the order of playback time, and the DVD 10 or HD 20, the decoder 200, and the NTSC converter 210 are controlled so that the extracted content data is sequentially played back. It has become.

  For example, when the speech section determined by the playback section determination unit 195 is a noise section, the summary playback section 196 of the present embodiment extracts a portion of content data of 10 seconds from the start time of the noise section, When the determined voice section is a silent section, a portion of content data of 10 seconds from the end time of the noise section is extracted. Then, the summary playback unit 196 connects the extracted content data of each part (hereinafter referred to as “partial content data”) in order of playback time, regardless of the type of the audio section, and plays back the DVD 10 or HD 20, decoder. 200 and NTSC converter 210 are controlled.

  Next, the recording processing operation in the recording control unit 150 of this embodiment will be described with reference to FIG.

  FIG. 8 is a flowchart showing the operation of the recording process in the recording control unit 150 of this embodiment. In this operation, the broadcast program data provided by the broadcast wave is recorded as content data, and the content data is recorded on the HD 20 based on a user's manual operation.

  First, when the user operates the operation unit 240 to instruct that content data provided by a predetermined broadcast wave should be recorded on the HD 20, the system control unit 250 detects the instruction (step S11). The TV receiver 110 is tuned to the reception band selected by the user and starts receiving signal waves (step S12).

  At this time, when the reception of the signal wave is started, the TV receiving unit 110 converts the received signal wave into a TV signal to generate content data, and the generated content data is processed for video data input processing. The data is output to the encoder 160 and the feature quantity extraction unit 140 via the unit 120 and the voice data input processing unit 130. Further, the TV receiving unit 110 receives content management information in content data selected and provided by the user, and outputs the received content management information to the recording control unit 150.

  Next, the system control unit 250 instructs the recording control unit 150 to start recording content data on the HD 20 (step S13). Note that the recording control unit 150 performs processing described below when an instruction to record content data on the HD 20 is input.

  First, the recording control unit 150 causes the feature amount extraction unit 140 to extract audio data from the content data, and starts a feature amount data detection process in the audio data based on the extracted audio data (step S14).

  Specifically, when the start of the detection process is instructed, the feature quantity extraction unit 140 detects a noise section start time and a noise section end time, or a silence section start time and a silence section end time as feature data. The volume level value of each voice section is detected, and the detected feature data is sequentially output to the recording control unit 150.

  Next, the recording control unit 150 causes the encoder 160 to encode the input content data into a data format of a predetermined compression format and start a generation process for generating a program stream, and causes the HD 20 to start recording the program stream. (Step S15).

  Next, the recording control unit 150 detects whether or not the stop of the content data recording process has been operated every predetermined time (step S16). If the stop of the recording process has been operated, the step S17 is performed. Shift to the process.

  When the user operates the recording process stop via the operation unit 240 and the system control unit 250 detects that the recording process is stopped, the system control unit 250 notifies the recording control unit 150 of the fact. To do. For this reason, the recording control unit 150 detects whether or not the recording process is stopped in the process of step S16.

  Next, the recording control unit 150 extracts the attribute of the content data from the input content management information, and detects the number of sections for each voice section, that is, the number of information based on the input feature amount data ( Step S17).

  Next, the recording control unit 150 generates summary reproduction management information based on the input audio segment information, the extracted content data attribute, and the number of detected information in each audio segment (step S18).

  At this time, the recording control unit 150 calculates an average value of a predetermined volume level for each predetermined time interval in each voice section as a volume level value, and uses the calculated average value of the volume level as a volume level value. Summary playback management information is generated. In addition, the recording control unit 150 incorporates reproduction number information indicating “0 times” when generating the summary reproduction management information.

  Finally, the recording control unit 150 records the summary reproduction management information generated in association with the program stream recorded on the HD 20 via the HD drive 180 (step S19), and ends this operation.

  Next, the operation of the summary reproduction process in the reproduction control unit 190 of this embodiment will be described with reference to FIG.

  FIG. 9 is a flowchart showing the operation of the summarization process in the reproduction control unit 190 of this embodiment. Also, in this operation, it is assumed that summary playback is performed on the content data recorded on the HD 20, and content data on which summary playback is performed is selected by a user's manual operation.

  First, when the user operates the operation unit 240 to select one content data recorded on the HD 20 and instruct the summary reproduction of the content data, the system control unit 250 detects the instruction (step) S21).

  Next, the system control unit 250 instructs the reproduction control unit 190 to start content data summary reproduction (step S22). When an instruction for performing summary playback of content data is input, the playback control unit 190 performs processing described below based on the instruction from the summary playback unit 196.

  First, the summary playback unit 196 searches the HD 20 and sends the corresponding summary playback management information, that is, summary playback management information in the selected content data to be played back to the template data determination unit 194 and the playback section determination unit 195. It is made to acquire (step S23).

  Next, the summary reproduction unit 196 recognizes the number of reproductions and attributes of the content data based on the summary reproduction management information acquired by the template data determination unit 194 (step S24).

  Next, the summary playback unit 196 causes the template data determination unit 194 to determine a template to be applied to the audio section information recorded in the summary playback management information (step S25).

  Specifically, the template data determination unit 194 searches the data storage unit 193 based on the acquired reproduction count information and attribute information, and the reproduction count indicated by the reproduction count information and the attribute indicated by the attribute information. Based on the above, one template data is determined for each of the noise section and the silent section, and the determined template data is output to the reproduction section determination unit 195.

  Next, the summary playback unit 196 determines a speech section to be used for summary playback based on the template data and the speech section information in the summary playback management information acquired by the playback section determination unit 195, and obtains time information in the determined speech section. The summary reproduction unit 196 outputs the result (step S26).

  Specifically, for each piece of voice section information, the playback section determination unit 195 duplicates the start time in the input template data based on the start time of each section recorded in the piece of voice section information. The volume level multiplication value of each section is calculated as the rate value, and the section where the volume level multiplication value is greater than or less than the section determination threshold is determined as the determined playback section. Then, the playback section determination unit 195 outputs time information of the determined playback section determined to the summary playback unit 196.

  Next, the summary playback unit 196 controls the HD 20, the decoder 200, and the NTSC conversion unit 210 based on the input time information, and performs summary playback (step S27). Specifically, the summary playback unit 196 causes the decoder 200 to extract content data of a predetermined time from the time indicated by the time information in the order of playback time, and the HD 20, the decoder 200, and the decoder 200 to play back the extracted content data sequentially. The NTSC converter 210 is controlled.

  Next, the summary generation unit detects whether or not the summary playback of the selected content data has been completed every preset time (step S28), and indicates that the summary playback of the selected content data has been completed. If detected, this operation is terminated.

  As described above, according to the present embodiment, the information recording / reproducing apparatus 100 is an information recording / reproducing apparatus 100 that performs reproduction while reducing the time length of the reproduction time of content data recorded in advance on the DVD 10 or the HD 20. The number-of-plays management unit 192 that manages the number of times the content data recorded on the HD 20 is managed, and when summary playback is instructed by the operator, the number of times the content data is managed that is managed by the number-of-plays management unit 192. A template data determination unit 194 to recognize, a template data determination unit 194 that determines template data based on the recognized number of reproductions, and a summary reproduction in content data based on the determined template data and audio section information. Playback specifying one or more playback sections And while determining unit 195 has a configuration with a digest playback unit 196 and the decoder 200 reproduces the content data recorded on the basis of the specified playback section.

  With this configuration, the information recording / reproducing apparatus 100 according to the present embodiment determines the template data based on the recorded reproduction frequency information when the operator instructs generation of summary information. Based on the template data, one or more playback sections used for summary playback in the content data are specified, and the stored content data is played back based on the specified playback section.

  Normally, if content data has not been viewed yet, summary playback is performed without providing the end of the content indicated by the content data, or if multiple playbacks have already been performed, the content It is possible to reduce the operator's willingness to watch if the contents of the summary playback are changed according to the viewing situation of the operator, such as providing a part that makes it easy to grasp the contents of the data and performing the summary playback. Absent.

  Therefore, the information recording / reproducing apparatus 100 of this embodiment specifies the reproduction section of the content data that is the basis of the summary reproduction based on the number of times of reproduction and performs the summary reproduction, thereby taking into consideration the viewing situation of the operator. Since the summary reproduction can be performed, the summary reproduction can be executed without reducing the willingness to view the recorded content data.

  In addition, the information recording / reproducing apparatus 100 according to the present embodiment is configured such that the information recording / reproducing apparatus 100 has a volume level exceeding a preset threshold or a preset threshold based on audio data included in the recorded content data. A feature amount extraction unit 140 that detects in advance an audio section in content data having at least one of the following volume levels, and the playback section determination unit 195 determines the determined template data and audio section information. Based on the above, one or more playback sections to be used for digest playback in the content data are specified.

  With this configuration, the information recording / reproducing apparatus 100 according to the present embodiment enables an audio section in content data having a volume level that exceeds a preset threshold value or a volume level that is less than or equal to a preset threshold value based on the acquired audio data. Is detected. Further, the information recording / reproducing apparatus 100 determines the stored template data based on the recorded number-of-times-of-playing information when the operator instructs generation of summary information, and determines the determined template. Based on the data and the audio section information, one or more playback sections used for the summary playback in the content data are specified, and the stored content data is played based on the specified playback section.

  Therefore, the information recording / reproducing apparatus 100 of this embodiment specifies the reproduction section of the content data that is the basis of the summary reproduction based on the number of times of reproduction and performs the summary reproduction, thereby taking into consideration the viewing situation of the operator. Since the summary reproduction can be performed, the summary reproduction can be executed without reducing the willingness to view the recorded content data.

  In addition, the information recording / reproducing apparatus 100 of the present embodiment is configured to include a recording control unit 150 that records in advance the audio level and the volume level value of the audio section on the DVD 10 or HD 20 as the audio section information.

  With this configuration, the information recording / reproducing apparatus 100 of the present embodiment records the detected audio section as audio section information on the DVD 10 or HD 20 together with the content data.

  Normally, in the content data, it is assumed that the higher the audio level is, the higher the content in the content data is, and the closer the audio level is to the silence, the more the content data is delimited. It is assumed.

  Therefore, the information recording / reproducing apparatus 100 according to the present embodiment can determine the reproduction section based on the sound volume level value when determining the reproduction section necessary for performing the summary reproduction. And a reproduction | regeneration area can be specified easily.

  Also, in the information recording / reproducing apparatus 100 of the present embodiment, the playback section determination unit 195 multiplies the determined template data by the volume level value indicated by the voice section information, and based on the result, the playback section in the content data is determined. One or two or more are specified.

  With this configuration, the information recording / reproducing apparatus 100 according to the present embodiment multiplies the determined template data by the volume level value indicated by the audio section information, and specifies one or more playback sections in the content data based on the result. Therefore, it is possible to specify a playback section that accurately corresponds to the viewing situation of the operator.

  Also, in the information recording / reproducing apparatus 100 of the present embodiment, when the data storage unit 193 stores a plurality of template data associated with the content data attributes together with the number of reproductions, the TV receiving unit 110 The attribute data indicating the attribute of the content data is acquired together with the content data, and the template data determining unit 194 has a configuration for determining the template data based on the number of times of reproduction and the attribute information.

  With this configuration, the information recording / reproducing apparatus 100 according to the present embodiment acquires attribute information indicating the attribute of the content data together with the content data, and determines template data based on the number of times of reproduction and the attribute information.

  Normally, content data such as broadcast programs have different contents depending on attributes (genres) such as movies, news, and sports. For this reason, when performing summary playback, it is necessary to consider the playback section of the content data that is also specified by the attribute.

  Therefore, the information recording / reproducing apparatus 100 according to the present embodiment determines the template data based on the content data attributes and the attribute of the content data, and reproduces the summary data based on the determined template data. Since the section can be specified, it is possible to perform summary reproduction that accurately corresponds to the viewing situation of the operator.

  In addition, in the information recording / reproducing apparatus 100 according to the present embodiment, when the digest reproducing unit 196 detects an audio section in content data having a volume level exceeding a preset threshold, the section having the volume level or higher is detected. It is specified as a playback section, and when a voice section in content data having a volume level equal to or lower than a preset threshold is detected, a section following the section having the volume level is specified as a playback section. Yes.

  With this configuration, the information recording / reproducing apparatus 100 according to the present embodiment uses a reproduction section having a sound level equal to or higher than the threshold for summary reproduction when a sound section having a volume level exceeding a preset threshold is detected. When an audio section having a volume level equal to or lower than a preset threshold is detected as a section, a playback section subsequent to the audio section having the volume level or less is specified as a section used for summary playback.

  Usually, an audio section whose audio level is equal to or higher than a preset threshold indicates a portion where the content in the content data is excited, and an audio interval whose audio level is equal to or lower than the preset threshold is a portion indicating a break of the content. The part following the section becomes an important part in the content data.

  Therefore, the information recording / reproducing apparatus 100 according to the present embodiment can provide summary reproduction that is well-defined in the content data and is composed of reproduction sections indicating the main points of the content data.

  In the information recording / reproducing apparatus 100 according to the present embodiment, the feature amount extraction unit 140 detects the speech section in the noise section and the silent section, and detects the feature amount data. You may make it detect the audio | voice area of a noise area or a silence area which has a sound volume level which exceeds or differs from several different threshold value.

  In this case, the information recording / reproducing apparatus 100 according to the present embodiment can recognize the voice section in more detail, such as a rising part of the content data. Therefore, when the summary playback is performed based on the detected voice section, the operator It is possible to perform summary reproduction that accurately corresponds to the viewing situation of the user.

  In addition, the information recording / reproducing apparatus 100 of the present embodiment uses the start time and end time of each audio section as information for specifying each audio section as a playback section in the content data in the audio section information. Any information can be used as long as each audio section can be specified as the reproduction time when reproducing the content data, such as the start time of the section and the time of the audio section.

  In addition, the information recording / reproducing apparatus 100 according to the present embodiment uses an average value in the voice section as the volume level value of the detected voice section. Of course, the volume level value proportional to the time length of the voice section is used. For example, a value that characterizes the voice section such as the sum of the volume level values in the voice section or the maximum value of the voice section may be used as the volume level value.

  In the present embodiment, the information recording / reproducing apparatus 100 performs a recording process, a reproducing process, and a summary reproducing process. However, as described above, the information recording / reproducing apparatus 100 having the DVD drive 170 or the HD drive 180 includes a computer, and the DVD 10 or HD 20 stores a program for performing the above-described recording processing, reproduction processing, and summary reproduction processing. Then, the recording process, the reproduction process, and the summary reproduction process similar to those described above may be performed by reading the program.

  In addition, the information recording / reproducing apparatus 100 of the present embodiment acquires content management information such as content data attributes from a broadcast wave transmitted from a broadcast station. The content management information may be acquired from the public network line.

It is a block diagram which shows the structure of the information recording / reproducing apparatus in one Embodiment which concerns on this application. It is a figure for demonstrating the feature-value data detected in the feature-value extraction part of one Embodiment. It is an example of the data structure figure of the summary reproduction | regeneration management information produced | generated in the recording control part of one Embodiment, and recorded on DVD or HD. It is a block diagram which shows the structure of the reproduction | regeneration control part in one Embodiment. It is an example (I) of the template data stored in the data storage part of one Embodiment. It is an example (I) of the template data stored in the data storage part of one Embodiment. It is a figure for demonstrating the reproduction area determined in the reproduction area determination part of one Embodiment. It is a flowchart which shows the operation | movement of the recording process in the recording control part of one Embodiment. It is a flowchart which shows the operation | movement of the reproduction | regeneration processing in the reproduction | regeneration control part of one Embodiment.

Explanation of symbols

10 ... DVD
20… HD
DESCRIPTION OF SYMBOLS 100 ... Information recording / reproducing apparatus 140 ... Feature-value extraction part 150 ... Recording control part 190 ... Reproduction control part 192 ... Reproduction frequency management part 193 ... Data storage part 194 ... Template data determination part 195 ... Reproduction area determination part 196 ... Summary reproduction part 200 ... Decoder

Claims (11)

A summary playback device that performs playback by reducing the time length of the playback time of content data recorded in advance on a recording medium,
Management means for managing the number of reproductions of the content data recorded on the recording medium;
Recognizing means for recognizing the number of times of reproduction of the content data managed by the managing means when summary reproduction is instructed;
Determining means for determining weighted data that changes with the progress of reproduction of content data based on the recognized number of reproductions;
Identifying means for identifying a playback section used for summary playback in the content data based on the determined weighted data;
Playback means for playing back the recorded content data based on the specified playback section;
A summary playback device comprising: The summary playback device according to claim 1,
Based on the audio data included in the recorded content data, the audio in the content data having at least one of a volume level exceeding a preset threshold or a volume level below a preset threshold It further has detection means for detecting the section in advance,
The summary reproduction apparatus characterized in that the specifying means specifies a playback section used for summary playback in the content data based on the determined weighted data and the audio section information. The summary playback device according to claim 2,
A digest reproducing apparatus comprising recording control means for previously recording the detected voice section on a recording medium as voice section information. The summary playback device according to claim 3,
The summary reproduction apparatus, wherein the recording control unit records a volume level value detected in the voice section together with the voice section as the voice section information on the recording medium. In the summary reproduction device according to any one of claims 1 to 4,
A storage means for storing a plurality of weighting data associated with the content data attributes together with the number of reproductions;
When attribute information indicating the attribute of the content data is recorded on the recording medium,
The digest reproducing apparatus, wherein the recognizing unit recognizes an attribute of the content data, and the determining unit determines the weighted data based on the number of times of reproduction and the recognized attribute. The summary playback device according to any one of claims 2 to 5,
The digest reproduction apparatus characterized in that the detection means detects in advance audio segments in the content data having a volume level exceeding a plurality of different threshold values as audio segment information. The summary playback device according to any one of claims 2 to 5,
The digest reproduction apparatus characterized in that the detecting means detects an audio section in the content data having at least one of a plurality of volume levels equal to or less than a plurality of different thresholds as audio section information. The summary playback device according to any one of claims 2 to 7,
In a case where an audio section in the content data having a volume level exceeding a preset threshold is detected by the specifying means, a section having the volume level or higher is specified as a playback section, and is less than or equal to a preset threshold An abstract playback apparatus characterized in that, when a voice section in the content data having a volume level is detected, a section following the section having the volume level is specified as a playback section. A summary reproduction method for performing reproduction by shortening a time length in a reproduction time of content data recorded in advance on a recording medium,
When the number of reproductions of content data recorded on the recording medium is managed,
A recognition step of recognizing the number of times of reproduction of the managed content data when summary reproduction is instructed;
A determination step of determining weighted data that changes with the progress of reproduction of the content data based on the recognized number of reproductions;
A specifying step of specifying a playback section to be used for summary playback in the content data based on the determined weighted data;
A reproduction step of reproducing the stored content data based on the specified reproduction section;
A summary reproduction method comprising: A summary reproduction program for reproducing by shortening the time length in the reproduction time of content data recorded in advance on a recording medium by a computer,
When the number of reproductions of content data recorded on the recording medium is managed,
The computer,
Recognizing means for recognizing the number of times of reproduction of the managed content data when summary reproduction is instructed;
Determining means for determining weighted data that changes with the progress of reproduction of content data based on the recognized number of reproductions;
A specifying means for specifying a playback section used for summary playback in the content data based on the determined weighted data;
Playback means for playing back the stored content data based on the specified playback section;
Summary replay program characterized by functioning as   An information recording medium in which the summary reproduction program according to claim 10 is recorded in a computer-readable manner.

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