WO2006075457A1 - 記録装置 - Google Patents
記録装置 Download PDFInfo
- Publication number
- WO2006075457A1 WO2006075457A1 PCT/JP2005/022270 JP2005022270W WO2006075457A1 WO 2006075457 A1 WO2006075457 A1 WO 2006075457A1 JP 2005022270 W JP2005022270 W JP 2005022270W WO 2006075457 A1 WO2006075457 A1 WO 2006075457A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recording
- signal
- video
- audio
- encoding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Definitions
- the present invention relates to a video / audio recording apparatus such as a hard disk recorder or a DVD recorder that encodes a video signal and an audio signal and stores them on a magnetic disk, an optical disk, etc., and particularly, for example, a commercial message (CM) broadcast.
- CM commercial message
- the present invention relates to a device having a function of extracting a feature amount of voice, which is used for discrimination of a voice and summary playback.
- the audio / video signal is encoded and recorded, and the apparatus for detecting the CM has a CM detecting unit provided independently of the encoding unit.
- An apparatus for detecting CM based on an audio signal that has been encoded and held in a memory is known (see, for example, Patent Document 2).
- Patent Document 1 Japanese Patent Laid-Open No. 8-317342
- Patent Document 2 Japanese Patent Laid-Open No. 2002-247516
- the present invention can easily take a correspondence relationship between a feature amount extracted from a video signal or an audio signal and the video / audio signal, etc., and information for association
- the purpose is to reduce or eliminate the processing and to easily reduce the circuit scale.
- a first device according to an embodiment of the present invention provides:
- Encoding means for encoding at least one of a video signal and an audio signal and generating an encoded signal having a header
- a feature extraction means for extracting a predetermined feature state or feature amount in the video signal or audio signal
- An extraction result setting means for setting the extraction result of the feature extraction means in a fixed value area where the same value is set in a plurality of sign key signals in the header of the sign key signal;
- a first recording device comprising:
- the feature extraction means includes a silence state, an amplitude, and a frequency component in the audio signal. It is configured to extract at least one of the fabrics.
- a first recording device comprising:
- the feature extraction means is configured to extract at least one of an amplitude and a frequency distribution in the video signal.
- the feature amount extracted from the video signal or the audio signal is set in the fixed value area of the header, and is associated with the video / audio signal or the like.
- the data set in the fixed value area is overwritten by the above feature amount or the like, it can be easily restored because it is a common value for a plurality of headers.
- a first recording device comprising:
- the feature extraction means is configured to perform the extraction using a result of an operation for encoding a video signal or an audio signal.
- the fifth device of the embodiment of the present invention is
- a first recording device comprising:
- the sixth device of the embodiment of the present invention provides:
- the encoding unit and the feature extraction unit perform the encoding or extraction based on the contents held in the buffer,
- the encoding means is configured to hold the generated code key signal in the buffer.
- a first recording device further comprising:
- It is characterized by comprising fixed value restoration means for restoring the encoded signal in which the extraction result is set in the fixed value area of the header to the encoded signal in which the original fixed value is set.
- the eighth device according to the embodiment of the present invention provides:
- the recording means is configured to record the encoded signal restored by the fixed value restoring means on the recording medium.
- the ninth device according to the embodiment of the present invention provides:
- the recording means records the encoded signal in which the extraction result is set in the fixed value area of the header on the recording medium
- the fixed value restoration means is configured to perform the restoration on an encoded signal reproduced from the recording medium.
- FIG. 1 is a block diagram showing a configuration of a main part of a video / audio recording apparatus according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a specific configuration of the speech code key unit 101.
- FIG. 3 is a flowchart showing an example of the operation of speech encoding section 101 in the same manner.
- FIG. 4 is an explanatory diagram showing an example of the contents stored in the hard disk.
- an audio / video recording apparatus includes, for example, an audio code input unit 101 that encodes an audio signal or an image signal that is input by video and audio broadcasting, and an image.
- a code key unit 102 and a code multiplexing unit 103 that multiplexes the encoded audio signal and video signal are provided.
- Such a video / audio recording device is not particularly limited.
- a hard disk recorder that encodes an image signal and stores it on a hard disk, an electric device with a built-in hard disk recorder, a television device with a built-in hard disk recorder, or a video recorder with a built-in hard disk recorder. It is used in DVD players with built-in hard disk recorders, etc., and is formed as part of semiconductor integrated circuits for these devices.
- the speech code key unit 101 includes a work memory 101a, a feature extraction unit 101b, and a code key processing unit 101c.
- the work memory 101a holds audio signals before and after the sign! Note that the work memory 101a is also used before and after the sign ⁇ , so that the number of circuits and input signal lines can be reduced and the circuit scale can be easily reduced. However, the present invention is not limited to this.
- the feature extraction unit 101b is, for example, a silence unit, and extracts feature quantities such as the amplitude level and frequency distribution of the audio signal based on the audio signal before the sign stored in the work memory 101a. It is supposed to be. As will be described in detail later, the extraction result is embedded in a fixed value area in the header of the packet generated by the sign key.
- the encoding processing unit 101c performs the encoding process by a method such as MPEG2, for example.
- a packet including a header is generated.
- a PES (Packetized Elementary Stream) packet including a PES header is generated.
- the feature extraction unit 101b is, for example, when the code key processing unit 101c is configured to perform voice code key processing by software processing using a microcode or the like. Can be easily realized simply by providing software code without providing a feature extraction circuit.
- the present invention is not limited to this, and if the silence detection process or the feature amount extraction process cannot be realized only by software processing, a part or all of the silence detection process or the like may be performed by hardware.
- the feature amount is extracted in the silent portion as shown in FIG.
- the amount of data before encoding is larger than the amount of data after encoding, but for the sake of convenience of explanation, FIG. 3 shows the same amount of data.
- a header [n] including a fixed value [n] is generated along with time information.
- the fixed value [n] is, for example, a value that does not change for each packet, that is, is set equal to a series (at least a plurality of) packets.
- the generated header [n] is stored in the work memory 101a (header [n ⁇ l] is overwritten).
- the feature extraction unit 101b Based on the input voice signal [n] held in the work memory 101a, the feature extraction unit 101b extracts whether the voice is silent, amplitude, frequency distribution, and the like. .
- the audio signal held in the work memory 101a is read into the digital signal processing circuit or the like by execution of the software.
- silence detection or the like is performed by hardware, a signal output from the work memory 101a is input to a silence detection circuit or the like.
- Information indicating whether there is a silence part or various feature quantities as a detection result of silence or the like is embedded as a feature quantity [n] in the header [n] by replacing the fixed value [n]. .
- the extracted feature value is embedded in the fixed value part. Therefore, the extracted feature value can be saved or transmitted to the part that performs processing based on the feature value, and it is not necessary to secure a new register area or external memory area. If necessary, a flag may be set to indicate that the fixed value portion has been multiplexed.
- the fixed value is already known information in the subsequent processing section of the DVD recorder, and therefore needs to be transmitted at all. There is no. (It is necessary to maintain compatibility with DVD players and recorders of other standards and specifications, such as when packets are output to DVD recorders, etc., that is, when writing to exchangeable recording media such as DVDs. In such a case, it is sufficient to restore a predetermined fixed value at that time.)
- the fixed value needs to be transmitted. In that case, it is only necessary to multiplex only the first packet, so it is not necessary to transmit it by the header of each packet. Therefore, as described above, it is possible to easily multiplex the extracted feature quantity into the fixed value portion. It may be embedded in an unused area such as a header.
- the code signal audio signal output from the audio code key unit 101 is multiplexed with the video signal packet output from the video code key unit 102 by the code multiplexing unit 103 to generate an audio video ( A V) Output as multiplexed stream data and recorded on a recording medium.
- the audio signal and video signal at the time of multiplexing are synchronized by time information such as PTS and DTS embedded in the PES header.
- a packet in which information indicating a feature value is embedded in a fixed value portion or an unused region portion of the header is transmitted from each packet by the code multiplexing unit 103 or a processing unit (not shown) in the subsequent stage. Based on the extracted features, automatic CM detection, removal, and highlight scene detection to enable summary playback are performed.
- the information indicating the feature value is embedded in the header of each packet, so that the process of associating each packet with the feature value can be easily performed.
- information and processing for associating the feature values with audio signals, etc. are required, but such processing is performed only by processing each packet. The attachment is guaranteed.
- the code multiplexing unit 103 since the synchronization between the audio signal and the video signal can be easily achieved by the time information or the like, as a result, for example, the feature amount extracted from the audio signal and the video signal It is easy to synchronize with the signal.
- the processing power based on the processing result such as the above-mentioned automatic CM detection is performed by a processing unit at a later stage, the processing result is embedded in a fixed value portion or an unused region portion of the header.
- the processing result is embedded in a fixed value portion or an unused region portion of the header.
- the original fixed amount is necessary. Overwrites the value part and restores the original packet.
- the feature amount obtained for the sign key is sequentially updated before being referred to for processing such as silence detection
- the feature amount is not changed until the time of embedding. You can save it in a separate memory area. For this purpose, it is only necessary to secure a memory area that is smaller than the memory capacity in which uncompressed video and audio information should be saved.
- the apparatus as described above may be applied to an apparatus for receiving and recording a digital broadcast. That is, in digital broadcasting, since it is distributed as video / audio broadcasting that has already been encoded and audio encoded, it is necessary to pass through the code part at the time of recording, as in a recording device that records analog broadcasting digitally. Not necessarily. However, when the encoded video / audio broadcast is de-encoded and re-encoded such that it is encoded again, the encoded video / audio broadcast passes through the encoding unit, so it is characterized by the encoding unit. With the function of extracting the volume, it is possible to detect silence for digital broadcasting.
- a feature extraction unit may be provided in the video code input unit 102 so that the same feature extraction is performed on the video signal. It should be noted that even when both the audio encoding unit 101 and the video encoding unit 102 are provided with a feature extraction unit, they may be operated separately, or both may be operated or only one may be operated. Let's make it possible, too.
- the feature value may be overwritten in a fixed value portion of the packet, recorded on a recording medium such as a hard disk, and restored at the time of reproduction or the like.
- efficient recording or the like can be realized.
- it may be necessary to have more storage capacity in order to save the feature values in a separate area from the code voice signal.
- Which features correspond to which packet In addition to this, it is necessary to have more storage capacity in order to hold the information as a set together with the feature amount.
- the feature amount is embedded in the fixed value portion of the header and recorded on the recording medium. As a result, such an increase in storage capacity can be avoided.
- the recording apparatus can easily take the correspondence between the feature amount extracted from the video signal or the audio signal and the video / audio signal, and reduce the information and processing for the association.
- a recording device such as a hard disk recorder or a DVD recorder that has the effect of being able to easily reduce the circuit scale and the like, and that encodes the video / audio signal and stores it on a magnetic disk or optical disk. Useful as such.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/794,952 US20080089668A1 (en) | 2005-01-11 | 2005-12-05 | Recording Apparatus |
| JP2006552856A JPWO2006075457A1 (ja) | 2005-01-11 | 2005-12-05 | 記録装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005004377 | 2005-01-11 | ||
| JP2005-004377 | 2005-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006075457A1 true WO2006075457A1 (ja) | 2006-07-20 |
Family
ID=36677490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/022270 Ceased WO2006075457A1 (ja) | 2005-01-11 | 2005-12-05 | 記録装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20080089668A1 (ja) |
| JP (1) | JPWO2006075457A1 (ja) |
| CN (1) | CN101099197A (ja) |
| WO (1) | WO2006075457A1 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110173235A1 (en) * | 2008-09-15 | 2011-07-14 | Aman James A | Session automated recording together with rules based indexing, analysis and expression of content |
| US8451312B2 (en) | 2010-01-06 | 2013-05-28 | Apple Inc. | Automatic video stream selection |
| KR20130134195A (ko) * | 2012-05-30 | 2013-12-10 | 삼성전자주식회사 | 오디오 스트림을 고속 시각화시키는 전자 장치 및 방법 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000057749A (ja) * | 1998-08-17 | 2000-02-25 | Sony Corp | 記録装置および記録方法、再生装置および再生方法、ならびに、記録媒体 |
| JP2000069414A (ja) * | 1998-08-17 | 2000-03-03 | Sony Corp | 記録装置および記録方法、再生装置および再生方法、ならびに、cm検出方法 |
| JP2000152179A (ja) * | 1998-11-17 | 2000-05-30 | Pioneer Electronic Corp | 映像データ再生方法、映像データ再生装置、映像データ記録方法及び映像データ記録装置 |
| JP2002158971A (ja) * | 2000-04-21 | 2002-05-31 | Sony Corp | 情報処理装置および方法、記録媒体、プログラム、並びに記録媒体 |
| JP2002281431A (ja) * | 2001-03-15 | 2002-09-27 | Fujitsu Ltd | 編集機能付き映像再生装置及び映像記録再生装置 |
| JP2003101938A (ja) * | 2001-09-26 | 2003-04-04 | Sony Corp | 再生装置および方法、記録媒体、並びにプログラム |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002831A (en) * | 1995-05-16 | 1999-12-14 | Hitachi, Ltd. | Image recording/reproducing apparatus |
| EP1280348A4 (en) * | 2000-04-21 | 2004-10-06 | Sony Corp | INFORMATION PROCESSING DEVICE AND PROCEDURE, PROGRAM AND RECORDING MEDIUM |
| JP2002049631A (ja) * | 2000-08-01 | 2002-02-15 | Sony Corp | 情報提供装置および方法、並びに記録媒体 |
| US7071994B2 (en) * | 2001-01-04 | 2006-07-04 | Telisar Corporation | System and method for nondisruptively embedding an OFDM modulated data signal into a composite video signal |
| JP4335516B2 (ja) * | 2001-12-04 | 2009-09-30 | パナソニック株式会社 | 複数のプロセッサを用いた動画像符号化装置およびその方法 |
| US7206494B2 (en) * | 2002-05-09 | 2007-04-17 | Thomson Licensing | Detection rules for a digital video recorder |
-
2005
- 2005-12-05 US US11/794,952 patent/US20080089668A1/en not_active Abandoned
- 2005-12-05 WO PCT/JP2005/022270 patent/WO2006075457A1/ja not_active Ceased
- 2005-12-05 CN CNA2005800463854A patent/CN101099197A/zh active Pending
- 2005-12-05 JP JP2006552856A patent/JPWO2006075457A1/ja not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000057749A (ja) * | 1998-08-17 | 2000-02-25 | Sony Corp | 記録装置および記録方法、再生装置および再生方法、ならびに、記録媒体 |
| JP2000069414A (ja) * | 1998-08-17 | 2000-03-03 | Sony Corp | 記録装置および記録方法、再生装置および再生方法、ならびに、cm検出方法 |
| JP2000152179A (ja) * | 1998-11-17 | 2000-05-30 | Pioneer Electronic Corp | 映像データ再生方法、映像データ再生装置、映像データ記録方法及び映像データ記録装置 |
| JP2002158971A (ja) * | 2000-04-21 | 2002-05-31 | Sony Corp | 情報処理装置および方法、記録媒体、プログラム、並びに記録媒体 |
| JP2002281431A (ja) * | 2001-03-15 | 2002-09-27 | Fujitsu Ltd | 編集機能付き映像再生装置及び映像記録再生装置 |
| JP2003101938A (ja) * | 2001-09-26 | 2003-04-04 | Sony Corp | 再生装置および方法、記録媒体、並びにプログラム |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101099197A (zh) | 2008-01-02 |
| JPWO2006075457A1 (ja) | 2008-06-12 |
| US20080089668A1 (en) | 2008-04-17 |
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