WO2005086476A1 - 映像音響コンテンツ記録装置および記録方法 - Google Patents
映像音響コンテンツ記録装置および記録方法 Download PDFInfo
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- WO2005086476A1 WO2005086476A1 PCT/JP2005/003310 JP2005003310W WO2005086476A1 WO 2005086476 A1 WO2005086476 A1 WO 2005086476A1 JP 2005003310 W JP2005003310 W JP 2005003310W WO 2005086476 A1 WO2005086476 A1 WO 2005086476A1
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- link information
- recording
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- video
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/04—Time compression or expansion
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
Definitions
- the present invention relates to a video / audio content recording device capable of recording video / audio content, and more particularly to a video / audio content recording device capable of recording video / audio content on a plurality of recording media.
- Patent Document 1 JP 2003-101921 A
- Patent Document 2 JP-A-2000-341625
- Patent Document 3 JP-A-2002-330390
- Patent Document 1 does not include a configuration for shortening the reproduction time of the video / audio content recorded on the memory card for the portable reproduction device. Therefore, for example, if a TV program is recorded for one hour, it takes one hour to reproduce it.
- Patent Documents 2 and 3 described above are provided with a configuration in which, apart from the video / audio content for normal reproduction, video / audio content whose reproduction time is shortened is created and recorded in advance. I have.
- the audiovisual content for normal playback and the audiovisual content for short-time playback are stored on the same recording medium, and only the audiovisual content for short-time playback is suitable for a portable player. There is no provision for creating and recording in recording media or recording data format.
- a recording medium or a device that can record in a recording data format suitable for the portable player is connected separately, and It is necessary to perform a new operation to copy the audiovisual content for playback.
- the normal audiovisual content and the audiovisual content for a portable player are recorded on separate recording media, and the former audiovisual content is used at home using a player such as a DVD player. It is also possible to watch the video and audio content using a portable player when going out.
- the present invention has been made to solve the above-described problems, and has as its object to provide an audiovisual content recording apparatus and the like that can reduce an operation load when reproducing audiovisual contents. I do.
- a video / audio content recording / reproduction system is a system for recording and reproducing video / audio content, and comprises a video / audio content recording a plurality of recording media. It comprises a content recording device and a video / audio content reproducing device for reproducing video / audio content recorded on a recording medium.
- the video and audio content recording device includes a broadcast signal receiving unit that receives a broadcast signal, and encodes a video signal or an audio signal included in the received broadcast signal according to a first encoding method.
- First content creation means for creating video / audio content
- second content creation means for encoding the video signal or the audio signal according to a second encoding method, and creating second audio / video content
- Link information creating means for creating link information for associating the first audiovisual content with the second audiovisual content
- first recording means for recording the first audiovisual content and the link information on a first recording medium.
- Second recording means for recording the second audiovisual content and the link information on a detachable second recording medium; and Link information comparing means for comparing link information with link information recorded on the second recording medium, and a link recorded on the first recording medium based on a comparison result of the link information comparing means.
- Link information recording means for recording.
- the audiovisual co A content playback device that plays back the second video and audio content recorded on the second recording medium; an operation extraction device that extracts an operation performed on the second video and audio content;
- Link information acquiring means for acquiring link information recorded on the recording second recording medium; and information associating information for specifying the operation extracted by the operation extracting means with the identification information of the second audiovisual content,
- Link information creating means for creating new link information in addition to the acquired link information
- link information recording for recording the new link information created by the link information creating means on the second recording medium Means.
- the operation performed by the audiovisual content reproducing apparatus on the second audiovisual content having the same content as the first audiovisual content is recorded on the second recording medium as new link information. Is done.
- the media information recorded on the second recording medium is reflected on the first recording medium by the link information comparing means and the link information recording means when the second recording medium is mounted on the audiovisual content recording device, Be recorded. Therefore, the operation performed on the second audiovisual content can be reflected on the first audiovisual content. This eliminates the need to operate two audiovisual contents separately, makes it possible to treat the two audiovisual contents as one apparent audiovisual content, and reduces the operation burden when reproducing the audiovisual contents. be able to.
- a video and audio content recording device is a device for recording video and audio content on a plurality of recording media, comprising: a broadcast signal receiving means for receiving a broadcast signal; First content creation means for creating a first video and audio content based on a video signal or an audio signal included in a broadcast signal; and creation of a second video and audio content based on the video signal or the audio signal.
- Second content creation means for creating, link information creation means for creating link information for associating the first video and audio content with the second video and audio content, and first recording of the first video and audio content and the link information
- the video and audio content recording apparatus further compares the link information recorded on the first recording medium with the link information recorded on the second recording medium.
- the link information recorded on the first recording medium and the link information recorded on the second recording medium are different based on the comparison result of the link information comparing means and the link information comparing means.
- a link information recording unit that matches two pieces of link information and records the matched link information on the first recording medium and the second recording medium.
- the operation performed by the audiovisual content reproducing apparatus on the second audiovisual content having the same content as the first audiovisual content is recorded on the second recording medium as new link information. Is done.
- the media information recorded on the second recording medium is reflected on the first recording medium by the link information comparing means and the link information recording means when the second recording medium is mounted on the audiovisual content recording device, Be recorded. Therefore, the operation performed on the second audiovisual content can be reflected on the first audiovisual content. This eliminates the need to operate two audiovisual contents separately, makes it possible to treat the two audiovisual contents as one apparent audiovisual content, and reduces the operation burden when reproducing the audiovisual contents. be able to.
- the second content creation means includes: a playback time change processing unit that changes a playback time of the video signal or the audio signal; And a creating unit that encodes according to the two encoding method to create the second audiovisual content.
- the reproduction time of the second audiovisual content is changed in advance by the reproduction time change processing unit, and is recorded on the second recording medium. For this reason, the portable playback device does not need to perform special playback time change processing, etc. by reading and playing back the second recording media power and the second video / audio content, that is, increases the hardware resources and power consumption. It is possible to view video and audio contents that can be efficiently viewed in a short time without being invited.
- a video / audio content reproducing apparatus is an apparatus for reproducing video / audio content recorded on a removable recording medium, and is a content reproducing means for reproducing the video / audio content.
- Operation extracting means for extracting an operation performed on the audiovisual content, and the audiovisual content recorded on a recording medium.
- Link information acquiring means for acquiring link information for associating a plurality of audiovisual contents including information, information for specifying an operation extracted by the operation extracting means, and identification information for the audiovisual content recorded on the recording medium
- Link information creating means for creating new link information in addition to the acquired link information, and the new link information created by the link information creating means being recorded on the recording medium.
- Link information recording means, and the operation is a reproduction process, a partial deletion process, or a whole deletion process.
- an operation performed by the user on the audiovisual content can be recorded as link information on the recording medium. Therefore, when reproducing the video and audio content from the recording medium in another reproduction device, the operation performed on the video and audio content reproduction apparatus can be prospered. Therefore, it is possible to reduce the operation burden when playing the same video / audio content on another playback device.
- the present invention uses, as steps, characteristic means included in a video / audio content recording device or the like which can be realized as a video / audio content recording device or the like having such characteristic means.
- a characteristic step included in the audiovisual content recording method or the like can be realized as a program for causing a computer to execute.
- a program can be distributed via a recording medium such as a CD-ROM (Compact Disc-Read Only Memory) or a communication network such as the Internet.
- the present invention it is possible to reduce the operation burden when reproducing video and audio contents. For example, when the audiovisual content recorded on one recording medium is played back halfway, the playback of the positional force can be performed on the audiovisual content recorded on the other recording medium by a simple operation. become.
- video and audio contents can be efficiently viewed in a short time without increasing hardware resources and power consumption in the portable player.
- FIG. 1 is a diagram showing a configuration of a video and audio system according to Embodiment 1 of the present invention.
- FIG. 2 is a block diagram showing a configuration of a stationary AV (Audio Visual) recorder according to Embodiment 1.
- FIG. 3 is a block diagram showing a configuration of a portable player.
- FIG. 4 is a flowchart of a recording process of audiovisual content in the stationary AV recorder according to the first embodiment.
- FIG. 5 is a diagram showing an example of link information created by a link information creating section of the stationary AV recorder.
- FIG. 6 is a diagram showing an example of link information created when an operation such as playback or editing of audiovisual content is performed on a portable playback device.
- FIG. 7 is a flowchart of a process executed by the stationary AV recorder when an optical disc and a memory card are inserted into the stationary AV recorder.
- FIGS. 8 (a) to 8 (c) are diagrams schematically showing the link information synchronization processing and the video / audio content data editing processing shown in FIG. 7.
- FIG. 9 is a diagram showing a configuration of a video and audio system according to Embodiment 2 of the present invention.
- FIG. 10 is a block diagram showing a configuration of a stationary AV recorder according to Embodiment 2.
- FIG. 11 is a flowchart of a recording process of audiovisual content in the stationary AV recorder according to Embodiment 2.
- FIG. 1 is a diagram showing a configuration of a video and audio system according to Embodiment 1 of the present invention.
- the video and audio system 200 is a system for recording and reproducing video and audio signals as video and audio content, and includes a television antenna 202 and a stationary AV recorder.
- Television antenna 202 is a device that receives a broadcast signal.
- the stationary AV recorder 201 is a device that records and reproduces a television program and the like included in a broadcast signal received from the television antenna 202.
- the video display 207 and the speaker 208 are devices for viewing video and audio contents reproduced by the stationary AV recorder 201.
- the portable player 209 is a device for viewing audiovisual content recorded by the stationary AV recorder 201 and stored in the memory card 206.
- the stationary AV recorder 201 has an optical disk drive 203 and a memory card slot 204, and creates video and audio contents in which a TV program or the like is recorded on two types of recording media, an optical disk 205 and a memory card 206. be able to.
- the audiovisual content recorded on the optical disk 205 is reproduced by the stationary AV recorder 201 and is viewed on the video display 207 and the speaker 208 connected thereto.
- the audiovisual contents recorded on the memory card 206 are to be reproduced and viewed by the portable reproducing device 209.
- the audiovisual content to be reproduced by the stationary AV recorder 201 is recorded.
- a hard disk 210 built in the stationary AV recorder 201 may be used.
- the recording media on which the audiovisual content is recorded shall be determined by the user's selection operation.
- the user can view video and audio contents recorded with a television program or the like on the stationary AV recorder 201 or the portable player 209.
- FIG. 2 is a block diagram showing a configuration of the stationary AV recorder 201.
- the stationary AV recorder 201 records a television program or the like included in a broadcast signal received from the television antenna 202 as a video / audio content, and reproduces the video / audio content recorded by the recording unit 220.
- a reproduction unit 230 is provided.
- Recording section 220 includes broadcast signal receiving section 101, first encoding section 102, first recording section 103, reproduction time change processing section 104, second encoding section 105, and second encoding section 105.
- a recording unit 106 and a link information creating unit 107 are provided.
- Broadcast signal receiving section 101 is a processing section that receives a broadcast signal via television antenna 202, demodulates the broadcast signal, and outputs a video signal and an audio signal.
- the first encoding unit 102 encodes the video signal and the audio signal output from the broadcast signal receiving unit 101 according to the MPEG (Moving Picture Experts Group) 2 system, and creates a video and audio content. It is.
- MPEG Motion Picture Experts Group
- the reproduction time change processing unit 104 is a processing unit that shortens the reproduction time of the video signal and the audio signal output from the broadcast signal reception unit 101 from the original broadcast time.
- the second encoding unit 105 is a processing unit that encodes the video signal and the audio signal whose reproduction time has been shortened by the reproduction time change processing unit 104 in accordance with the MPEG4 system, and creates a video and audio content. .
- the link information creating unit 107 is a processing unit that creates link information for linking the two audiovisual contents encoded by the first encoding unit 102 and the second encoding unit 105. . Details of the link information will be described later.
- the first recording unit 103 is a recording unit that records the audiovisual content output from the first encoding unit 102 and the link information output from the link information creation unit 107 on the optical disc 205.
- the second recording unit 106 is a recording unit that records the audiovisual content output from the second encoding unit 105 and the link information output from the link information creation unit 107 on the memory card 206.
- the reproducing unit 230 includes a first data reading unit 301, a first AV data decoding unit 302, a first link information decoding unit 303, a link information recording unit 304, a second data reading unit 305, 2 It includes an AV data decoding unit 306, a link information comparing unit 307, a content data editing unit 308, a second link information decoding unit 309, and an AV data reproducing unit 310.
- the first data readout unit 301 is a processing unit that reads out audiovisual content and link information recorded on the optical disc 205.
- the first AV data decoding unit 302 is a processing unit that decodes the video and audio content read by the first data reading unit 301.
- the first link information decoding unit 303 is a processing unit that decodes the link information read by the first data reading unit 301.
- the second data reading unit 305 is a processing unit that reads the audiovisual content and link information recorded on the memory card 206.
- the second AV data decoding unit 306 is a processing unit that decodes the video and audio content read by the second data reading unit 305.
- the second link information decoding unit 309 is a processing unit that decodes the link information read by the second data reading unit 305.
- the AV data reproducing unit 310 is a processing unit that controls to reproduce the video and audio contents decoded by the first AV data decoding unit 302 or the second AV data decoding unit 306 on the video display 207 and the speed 208. It is.
- the link information comparison unit 307 is a processing unit that compares the link information decoded by the first link information decoding unit 303 and the link information decoded by the second link information decoding unit 309, respectively.
- the link information recording unit 304 edits the two pieces of link information based on the comparison result of the link information in the link information comparison unit 307, and records the edited link information on the optical disc 205 and the memory card 206, respectively. It is a processing unit.
- the content data editing unit 308 is a processing unit that edits the audiovisual content recorded on the optical disk 205 and the memory card 206, respectively, based on the comparison result of the link information in the link information comparison unit 307.
- FIG. 3 is a block diagram showing a configuration of the portable player 209.
- the portable player 209 includes a data reading unit 401, an AV data decoding unit 402, a link information decoding unit 403, a link information recording unit 404, an operation history information extracting unit 405, an AV data reproducing unit 406, and a link.
- An information creation unit 407 is provided.
- the data reading unit 401 is a processing unit that reads the audiovisual content and link information recorded on the memory card 206.
- the AV data decoding unit 402 is a processing unit that decodes the audiovisual content read by the data reading unit 401.
- the AV data reproducing unit 406 transmits the audiovisual content decoded by the AV data decoding unit 402 to a display device (not shown) and a speaker (not shown) provided in the portable player 209. This is a processing unit for performing control for playback.
- the link information decoding unit 403 is a processing unit that decodes the link information read by the data reading unit 401.
- the operation history information extraction unit 405 is a processing unit that extracts information related to operation histories, such as playback, editing, and deletion, performed by the user on the audiovisual content.
- the link information creation unit 407 updates the link information decoded by the link information decoding unit 403 based on the information on the operation history extracted by the operation history information extraction unit 405, and updates the new link information. This is a processing unit to be created.
- the link information recording unit 404 is a processing unit that records the link information created by the link information creation unit 407 in the memory card 206.
- Each unit of the audiovisual system 200 configured as described above operates as follows. First, recording processing of video and audio contents in the stationary AV recorder 201 will be described.
- FIG. 4 is a flowchart of recording processing of audiovisual content in the stationary AV recorder 201.
- Broadcast signal receiving section 101 demodulates a broadcast signal including a television program received via television antenna 202, and outputs a video signal and an audio signal. Note that the video signal and the audio signal output from the broadcast signal receiving unit 101 are split into two in order to create two types of audiovisual content to be reproduced by the stationary AV recorder 201 and the portable player 209. .
- the first encoding unit 102 encodes the video signal and the audio signal output from the broadcast signal receiving unit 101 according to the MPEG2 system to create an audiovisual content (Sl).
- the first recording unit 103 converts the created audiovisual content into the recording format of the optical disc 205, which is the recording medium for the stationary AV recorder 201, and then writes it on the optical disc 205 (S2).
- the reproduction time change processing unit 104 performs processing on the other video signal and audio signal branched from the broadcast signal reception unit 101 to reduce the reproduction time from the original broadcast time. That is, the reproduction time change processing section 104 writes the video signal and the audio signal into its own buffer memory (not shown) (S3), and then performs the fast-forward reproduction processing (S4).
- the second encoding unit 105 encodes the video signal and the audio signal that have been subjected to the fast-forward playback processing according to the MPEG4 method, and creates audiovisual content (S5). After that, the second recording unit 106 converts the created audiovisual content into the recording format of the memory card 206, which is the recording media for the portable playback device 209, and then writes it into the memory card 206 (S6). ).
- the above processing is repeatedly executed until all the video and audio contents are recorded on the optical disk 205 and the memory card 206 (S1-S7).
- the audiovisual content recorded on the memory card 206 as described above is subjected to processing for shortening the reproduction time in advance. For this reason, even if the portable player 209 does not perform any special processing, the user can realize the short-time viewing of the audiovisual content by performing the normal reproduction processing. Therefore, the stationary AV recorder 201 can create video and audio contents that can be efficiently viewed in a short time without causing an increase in hardware resources and power consumption in the portable playback device 209.
- the video and audio contents recorded in the first recording unit 103 and the second recording unit 106 as described above are recorded on separate recording media, respectively. It is created from the sound signal. Therefore, it is desirable to manage two audiovisual contents in association with each other.
- the link information creating unit 107 creates link information that associates the two audiovisual contents recorded by the first recording unit 103 and the second recording unit 106. Then, when the recording of the video / audio content is completed in the first recording unit 103 and the second recording unit 106, the recording is performed on each recording medium (S8).
- the link information creating unit 107 selects a program name of a television program recorded on two recording media from a broadcast signal output from the broadcast signal receiving unit 101. Is extracted, and link information including the extracted program name is created.
- an ID (Identification) that can specify a program to be recorded is added to the name of the program.
- Identification information such as codes, recording date and time information, or address information that can specify the recording location of the other audiovisual content recorded at the same time may be used.
- FIG. 5 is a diagram showing an example of the link information created by the link information creating unit 107 of the stationary AV recorder 201.
- the basic structure of link information 502 is a predetermined start code “0x
- the link information 502 is used to identify the operation uniquely assigned to each operation, the date and time at which the operation was performed (operation date and time), and the stationary AV recorder 201 at which the operation was performed. Device ID is described.
- link information 502 a title ID and a title name for specifying a title to be recorded, a recording start time (start time), and a recording end time (end time) are described. Has been described.
- time information such as the start time and the end time
- an arbitrary time position in one recording medium is associated with the other recording medium, and the audiovisual content of the audiovisual content corresponding to the time position described above. It is desirable to be able to identify the recording location.
- the time information at which the recording operation was performed may be used, or a relative time from the recording start time may be used.
- SCR System Clock Reference
- PTS Presentation Time Stamp
- the operation relating to the audiovisual content performed by one device can be performed by the other recording device. This can be reflected on the audiovisual contents of the media.
- FIG. 6 is a diagram showing an example of link information created when an operation such as playback or editing of video / audio content is performed in the portable playback device 209.
- the link information is described for each operation on a certain audiovisual content. Therefore, when multiple operations are performed on one device, multiple pieces of link information composed of a start code and an end code are described. That is, each operation is extracted by the operation history information extraction unit 405, and the corresponding link information is created by the link information creation unit 407. After that, the link information recording unit 404 records the created link information on the memory card 206.
- the first link information whose operation ID is "1000001" is the same as the link information 502 regarding "recording" of the audiovisual content shown in the link information 502. .
- This link information is the link information recorded on both the optical disk 205 and the memory card 206 in the link information recording process (S8 in FIG. 4).
- the link information indicated by the operation ID "200001” indicates an operation for "playback” of the audiovisual content. Therefore, this link information describes that the audiovisual content having the title ID “1345673” and the title name “Soccer Japan Vs Germany” was also played for about 30 minutes at first.
- the link information indicated by the operation ID "200002" describes the operation in which the operation type is "Playback” and the audiovisual content with the title name "News 7" was initially played for about 10 minutes. I have. Subsequent link information with an operation ID of "200003” has an operation type of "Edit Cut” and a portion after the reproduced portion of the audiovisual content of the title name "News 7", that is, the unreproduced portion. This section describes the operation with the part deleted.
- the last link information with the operation ID "200004" describes the operation of deleting the audiovisual content whose operation type is "Delete” and whose title is "Drama X”. is there.
- the portable player 209 and the stationary AV recorder 201 as described later are recorded. In this way, efficient use of video and audio contents in cooperation with each other becomes possible, and user convenience is further improved.
- FIG. 7 is a flowchart of a process executed by the stationary AV recorder 201 when the optical disk 205 and the memory card 206 are inserted into the stationary AV recorder 201.
- link information 502 shown in FIG. 5 is recorded on optical disc 205
- link information 504 shown in FIG. 6 is recorded on memory card 206.
- the first data reading unit 301 of the stationary AV recorder 201 reads the audiovisual content and link information 502 recorded on the optical disc 205 (S20), and the first link information decoding unit 303 reads.
- the link information 502 is decoded (S21).
- the second data reading unit 305 reads the audiovisual content and the link information 504 recorded on the memory card 206 (S22), and the second link information decoding unit 309 reads the same.
- the output link information 504 is decoded (S23).
- the link information comparison unit 307 compares the link information 502 output from the first link information decoding unit 303 with the link information 504 output from the second link information decoding unit 309 (S24). If the link information is different as a result of the comparison (YES in S25), the link information recording unit 304 synchronizes the link information 502 and the link information 504 and records them on the optical disc 205 and the memory card 206, respectively. (S26). That is, a process is performed in which the link information 502 and the link information 504 are information indicating the same content. For example, by adding to the link information 502 the link information reflected in the link information 504 when the portable player 209 is operated (the link information after the operation ID “2000 01” of the link information 504). The link information 502 and the link information 504 are equivalent.
- the content data editing unit 308 performs a process of editing the video and audio contents recorded on the optical disk 205 and the memory card 206 so as to match the link information after the synchronization (S27).
- the link information 502 recorded on the optical disc 205 has been rewritten to be equivalent to the link information 504 shown in FIG. Therefore, the link information recording unit 304 stores the link information of the operation ID “200003” included in the link information 504.
- the part with the recording time from 7:10:15 to 7:20:00 was deleted ( Delete some contents).
- the link information recording unit 304 stores the operation ID "200" included in the link information 504.
- the video / audio content of the title “Drama X” recorded on the optical disc 205 is deleted.
- FIG. 8 is a diagram schematically showing the link information synchronization processing and the video / audio content data editing processing shown in FIG. FIG. 8A schematically shows link information and video / audio content data immediately after recording of a video / audio content in the recording unit 220 of the stationary AV recorder 201.
- the optical disk 205 has recorded thereon audiovisual content data 508 recorded in accordance with the MPEG2 format
- the memory card 206 has recorded audiovisual content data 510 recorded in accordance with the MPEG4 format.
- the audiovisual content data 508 and the audiovisual content data 510 are identical in content. For this reason, the optical disk 205 and the memory card 206 are associated with the audiovisual content data 508 and the audiovisual content data 510, and link information 502 indicating that the audiovisual content data 508 and 510 are recorded is recorded.
- FIG. 8B shows a state after the user deletes a part of the video and audio content data 510 recorded on the memory card 206 using the portable playback device 209.
- the audiovisual content data 512 after a part of the audiovisual content data 510 has been deleted is recorded in the memory card 206, and the link information “Editcut” indicating that the audiovisual content data 510 has been deleted.
- the link information 502 and the audiovisual content data 508 recorded on the optical disk 205 are the same as those shown in FIG.
- FIG. 8 (c) shows a state after the optical disk 205 and the memory card 206 are inserted into the stationary AV recorder 201 and the processing shown in FIG. 7 has been performed.
- the link information 504 is recorded on both the optical disc 205 and the memory card 206, and the audiovisual content data after a part of the audiovisual content data 508 is deleted so as to correspond to the link information 504. 514 is recorded on the optical disk 205.
- the audiovisual content data having the same contents but different encoding methods is recorded on the optical disk 205 and the memory card 206.
- the operation performed on! Or the deviation of the same audiovisual content recorded on two recording media is performed on the other audiovisual content. Can also be applied to. For this reason, it is possible to save the trouble of separately operating the two audiovisual contents, and to treat the two audiovisual contents as one apparent audiovisual content.
- the editing process (S27 in FIG. 7) for the audiovisual content recorded on the optical disc 205 may be performed automatically or may be performed after the user confirms. Is also good.
- the operation performed by the stationary AV recorder 201 is described in which the operation performed by the portable playback device 209 is reflected on the audiovisual content of the stationary AV recorder 201. It may be reflected on the audiovisual content of the type reproduction device 209. In this case, a configuration similar to that of the playback unit 230 may be provided in the portable playback device 209.
- the link information described above is recorded and managed separately from the optical disk 205 and the memory card 206 in a hard disk 210 built in the stationary AV recorder 201 or a nonvolatile semiconductor memory (not shown). You may do it.
- Embodiment 2 of the present invention will be described.
- the actual The same components as those of the audiovisual system according to Embodiment 1 have the same functions and names, and therefore, detailed description thereof will not be repeated here.
- FIG. 9 is a diagram showing a configuration of a video and audio system according to Embodiment 2 of the present invention.
- the audiovisual system 500 uses a stationary AV recorder 501 instead of the stationary AV recorder 201 in the audiovisual system 200 shown in FIG.
- FIG. 10 is a block diagram showing a configuration of a stationary AV recorder 501.
- the stationary AV recorder 501 includes a recording unit 240 that records a television program or the like included in a broadcast signal received from the television antenna 202 as audiovisual content, and reproduces the audiovisual content recorded by the recording unit 240.
- a reproduction unit 230 is provided. That is, the stationary AV recorder 501 uses a recording unit 240 instead of the recording unit 220 in the configuration of the stationary AV recorder 201 shown in FIG.
- the recording unit 240 is a processing unit that records a television program or the like included in the broadcast signal received from the television antenna 202 as audiovisual content, and includes a broadcast signal receiving unit 101, a first encoding unit 102, It includes a first recording unit 103, a second encoding unit 105, a second recording unit 106, a link information creating unit 107, an AV signal reading unit 108, and a digest extracting unit 109.
- the AV signal reading unit 108 is a processing unit that reads the audiovisual content recorded on the optical disc 205 by the first recording unit 103.
- the digest extraction unit 109 is a processing unit that extracts an important part from the audiovisual content read by the AV signal reading unit 108.
- FIG. 11 is a flowchart of recording processing of audiovisual content in the stationary AV recorder 501.
- Broadcast signal receiving section 101 demodulates a broadcast signal including a television program received via television antenna 202, and outputs a video signal and an audio signal.
- the first encoding unit 102 encodes the video signal and the audio signal output from the broadcast signal receiving unit 101 according to the MPEG2 system, and creates an audiovisual content (S10).
- the first recording unit 103 converts the created audiovisual content into a recording format of the optical disc 205 which is a recording medium for the stationary AV recorder 201, and then writes the converted data on the optical disc 205 (Sl1).
- the above processing is repeatedly executed until all the audiovisual contents are recorded on the optical disk 205 (S10-S12).
- a process of recording the audiovisual content on the memory card 206 is performed.
- a process of changing the reproduction time is performed by praying the contents of the video and audio contents recorded on the optical disc 205 and performing a process of cutting out only important portions.
- the AV signal reading unit 108 reads the audiovisual content recorded on the optical disc 205 by the first recording unit 103 (S13).
- the digest extracting unit 109 extracts only the audiovisual contents included in the important section from the read audiovisual contents.
- a voice section including a human voice is extracted as an important section (S14).
- the method of detecting a voice section is not particularly limited.For example, a frequency spectrum of a voice band of an audio signal is analyzed, and a voice section is detected based on a property that a specific frequency component is a maximum value or a minimum value. You may.
- the digest extraction unit 109 may extract only the audiovisual content included in the important section according to a method other than the method described above.
- the digest extraction unit 109 receives time information indicating an important section created by a device other than the stationary AV recorder 501 via an interface with an external device (not shown), and adds the received time information to the received time information. Based on this, only the audiovisual content included in the important section may be extracted.
- the time information indicating the important section is assumed to be, for example, information produced and provided by a manual operation of a television program producer.
- the audiovisual content is written to the optical disk 205 and the memory card 206.
- the link information on which the recording process has been performed is recorded on the optical disk 205 and the memory card 206.
- the aspect of recording and reproducing a broadcast signal is assumed, but the present invention is not necessarily limited to the broadcast signal.
- recording and playback of audiovisual content data distributed via a network such as the Internet may be performed in a similar manner, or may be recorded in advance on a recording medium such as a DVD (Digital Versatile Disc).
- the recording and reproduction of the audiovisual content data may be performed by a similar method.
- the digest extraction process and the video and audio content recording process on the memory card 206 are performed as in the first embodiment.
- the audiovisual content recording process on the optical disc 205, the digest extraction process, and the audiovisual content recording process on the memory card 206 may be performed in parallel.
- the reproduction time is reduced by the reproduction time change processing unit 104 according to the first embodiment with respect to the video / audio content in the important section extracted by the digest extraction unit 109.
- the processed data may be recorded on the memory card 206 by the second encoding unit 105.
- the present invention can be applied to a video and audio content recording device, and particularly to a recording device and the like that can record video and audio content on two or more recording media.
Abstract
Description
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JP2000341625A (ja) * | 1999-05-28 | 2000-12-08 | Victor Co Of Japan Ltd | デジタル情報信号記録装置、およびデジタル情報信号記録方法 |
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