JPH08287616A - Audio data coding recording device, audio data decoding reproducing device and storage medium - Google Patents

Audio data coding recording device, audio data decoding reproducing device and storage medium

Info

Publication number
JPH08287616A
JPH08287616A JP8528995A JP8528995A JPH08287616A JP H08287616 A JPH08287616 A JP H08287616A JP 8528995 A JP8528995 A JP 8528995A JP 8528995 A JP8528995 A JP 8528995A JP H08287616 A JPH08287616 A JP H08287616A
Authority
JP
Japan
Prior art keywords
encoding
audio data
means
audio
stream
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.)
Granted
Application number
JP8528995A
Other languages
Japanese (ja)
Inventor
Masahiro Honjo
Yoshinori Nakajima
Masatoshi Shinpo
Ryoji Suzuki
由則 中嶋
正利 新保
正博 本城
良二 鈴木
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP8528995A priority Critical patent/JPH08287616A/en
Publication of JPH08287616A publication Critical patent/JPH08287616A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To secure interchangeability of media among areas employing different audio coding systems by coding the same audio signal and multiplexing this into the same medium in a plurality of different highly efficient audio coding systems. CONSTITUTION: After being A/D-converted in an A/D converter 102, an audio signal inputted from an audio signal input terminal 101 is inputted to a first audio data coding means 103 and a second audio data coding means 106. In the first and second audio data coding means 103 and 106, the same audio signal is coded in each highly efficient coding system. The outputs of the first and second audio data coding means 103 and 106 are multiplexed in a multiplexer 108 and then recorded in a single storage medium 202.

Description

Detailed Description of the Invention

[0001]

The present invention relates to MPEG1 audio and MPE.
The present invention relates to an audio data encoding device, an audio data encoding / recording device, an audio data decoding device, an audio data decoding / reproducing device, and a storage medium that use a plurality of different high-efficiency audio encoding systems such as G2 audio.

[0002]

2. Description of the Related Art ISO11172 (commonly known as MPEG1 standard), which is a world standard encoding method for high-efficiency encoding method of moving image signals and accompanying audio signals, is applied to 1.5 Mbps digital storage media such as CD and DAT. August 1, 1993 ISO
Published by Along with this, in the field of high-efficiency coding of audio signals, LSI development applying the MPEG / Audio Phase1 algorithm (commonly called MPEG1 audio) technology is being actively conducted.

Also, the so-called MPEG2 audio, which aims to expand the MPEG1 audio to multi-channel / multi-lingual, is published as an international standard in 1995. Therefore, it is expected that the development of devices and devices that apply the MPEG2 audio technology will be actively performed in the future.

[0004]

Therefore, it is conceivable that a device which is currently adopting the MPEG1 audio technique or is about to adopt the MPEG1 audio technique will also adopt the MPEG2 audio technique in the next-generation device. Compatibility between audio and MPEG2 audio becomes a problem.

According to the MPEG standard, the requirements for MPEG2 audio include forward and backward compatibility with MPEG1 audio for multi-channel / multi-lingual encoding and forward compatibility for low sampling frequency encoding. However, the method is not specified.

[0006] Further, the audio encoding system to be adopted may differ depending on the region, but at this time, ensuring the compatibility of the medium becomes a problem.

The present invention solves the above problems and realizes forward and backward compatibility of MPEG1 audio and MPEG2 audio with a simple structure, and also realizes compatibility between regions where different audio encoding methods are adopted. It is intended to ensure media compatibility.

[0008]

In order to achieve the above-mentioned object, the present invention provides an audio data encoding apparatus having a plurality of different audio data high efficiency encoding means and packet header encoding means, in which the packet header In the stream ID described in, a specific value associated with the high-efficiency coding method is described, and in an audio data decoding device having at least one kind of audio data decoding means and a system stream analysis means, Above stream
The ID is configured to identify the high-efficiency coding method of each audio stream in the multiplexed stream.

Further, in the audio data encoding / recording apparatus having a plurality of different audio data high efficiency encoding means and system management information encoding means, the stream ID described in the system management information of the recording medium is An audio data decoding / reproducing apparatus which describes a specific value associated with a high-efficiency encoding system, and which has at least one or more kinds of audio data decoding means and system control means for processing system management information. The ID is configured to identify the high-efficiency coding method of each audio stream in the multiplexed stream.

Then, the same input audio signal is applied to each of a plurality of different high efficiency encoding systems by an audio data high efficiency encoding means for encoding the input audio signal by a plurality of different high efficiency encoding systems. Audio data decoding means having a decoding system for decoding all or part of the high-efficiency coding system to reproduce the same audio signal by at least one kind of decoding system. Further, an audio data high efficiency encoding means for encoding the input audio signal by a plurality of different high efficiency encoding methods and an encoding method selecting means for selecting the high efficiency encoding method of the audio data high efficiency encoding means are provided. The audio data encoding device has a configuration in which the same audio signal is encoded by each of a plurality of different high efficiency encoding systems by setting the encoding system selection means.

[0011]

The present invention has the above-mentioned configuration,
It is possible to distinguish between MPEG1 audio stream and MPEG2 audio stream, realize forward and backward compatibility between MPEG1 audio stream and MPEG2 audio stream with a simple configuration, and media between regions that adopt different audio encoding methods. To ensure compatibility.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an audio data encoding device according to the first embodiment of the present invention.

In FIG. 1, an audio signal input terminal 101
The audio signal input from the A / D converter 102
After D conversion, it is input to the first audio data high efficiency encoding means 103. Similarly, audio signal input terminal 104
The audio signal input from the A / D converter 105
After being converted, it is input to the second audio data high-efficiency encoding means 106 using a high-efficiency encoding method different from that of the first audio data high-efficiency encoding means 103. The audio stream high-efficiency coded by the first audio data coding means 103 and the second audio data high-efficiency coding means 106 is a stream ID and time information coded by the system stream coding means 107. PTS (Presen
tation Time Stump) and is multiplexed by the multiplexer 108.

At this time, the streams 0 to 15 are high-efficiency-encoded by the second audio data encoding means 106 in the audio stream which has been high-efficiency encoded by the first audio data encoding means 103. Stream IDs corresponding to streams 16 to 31 are assigned to the audio streams. In addition, the first audio data high-efficiency encoding means 103 and the second audio data high-efficiency encoding means 10
6. The system stream coding means 107 and the multiplexer 108 are controlled by the system control means 109 so as to perform predetermined operations. FIG. 2 is a block diagram showing the configuration of an audio data encoding / recording device according to the second embodiment of the present invention. In the following figures, common blocks have the same numbers.

In FIG. 2, an audio signal input terminal 101
The audio signal input from the A / D converter 102
After D conversion, it is input to the first audio data high efficiency encoding means 103. Similarly, audio signal input terminal 104
The audio signal input from the A / D converter 105
After being converted, it is input to the second audio data high-efficiency encoding means 106 using a high-efficiency encoding method different from that of the first audio data high-efficiency encoding means 103. The audio stream that has been subjected to high efficiency encoding by the first audio data high efficiency encoding means 103 and the second audio data high efficiency encoding means 106 is the system stream encoding means 10.
PTS (Presentation Time) of the time information encoded in 7.
Stump) and multiplexed by the multiplexer 108.

The audio stream multiplexed by the multiplexer 108 is input to the system management information coding means 201, and the system management information is added to the system management information area of the recording medium. At this time, in the system management information, streams 0 to 1 are included in the audio stream highly efficient encoded by the first audio data encoding means 103.
5, the stream 16 to the audio stream highly efficient encoded by the second audio data encoding means 106
At least the stream ID corresponding to 31 is described.

The output of the system management information encoding means 201 is input to the storage medium 202 and recorded. Also,
The control of the entire system is similar to the case of the first embodiment,
This is performed by the system control means 109.

FIG. 3 is a block diagram showing the arrangement of an audio data encoding / recording apparatus according to the third embodiment of the present invention.

In FIG. 3, an audio signal input terminal 101
The audio signal input from the A / D converter 102
After D conversion, it is input to the first audio data high efficiency encoding means 103. Similarly, audio signal input terminal 104
The audio signal input from the A / D converter 105
After being converted, it is input to the second audio data high-efficiency encoding means 106 using a high-efficiency encoding method different from that of the first audio data high-efficiency encoding means 103. Packet header information including a stream ID, time information PTS (Presentation Time Stump), etc. is encoded by the packet header encoding means 301. At this time, the audio stream high-efficiency-encoded by the first audio data encoding means 103 becomes streams 0 to 15, and the audio stream high-efficiency-encoded by the second audio data encoding means 106 becomes. Is a stream corresponding to streams 16 to 31
ID is assigned. The audio stream multiplexed by the multiplexer 108 is the system management information encoding means 20.
Inputd in 1, the system management information is added to the system management information area of the recording medium. The stream ID described in the packet header is double written in the system management information. The output of the system management information encoding means 201 is
It is input to the storage medium 202 and recorded. Further, the control of the entire system is performed by the system control means 109, as in the case of the first embodiment.

FIG. 4 is a block diagram showing the arrangement of an audio data decoding apparatus according to the fourth embodiment of the present invention.

In FIG. 4, a bit stream analysis unit 401 detects a stream ID and PTS (Presentation Time Stump) which is time information from the audio bit stream. The PTS is read by the system control means 109 composed of a CPU, a memory, etc., and the system control means 109 uses the time information of the PTS as the first audio data decoding means 403 and the second audio data decoding means.
Controls the decoding start time of 404. The data switching means 402 is
The bit stream analysis unit 401 performs data switching based on the control signal generated from the stream ID. That is, the stream ID is analyzed, and the audio streams of streams 0 to 15 are transferred to the first audio data decoding means 403.
The audio streams of the streams 16 to 31 are switched so as to be output to the second audio data decoding means 404. The audio streams input to the first audio data decoding means 403 and the second audio data decoding means 404 are decoded by the respective decoding means, and D / A
The signals are D / A converted by the converters 405 and 406 and then output from the audio signal output terminals 407 and 408. At this time, the bit stream analysis unit 401, the data switching unit 402, the first audio data decoding unit 403, the second audio data decoding unit
404 is a system control means 1 for performing a predetermined operation
Controlled at 09.

FIG. 5 is a block diagram showing the arrangement of an audio data decoding / reproducing apparatus according to the fifth embodiment of the present invention.

In FIG. 5, the data read from the storage medium 202 is input to the system management information detecting means 501, and the system management information recorded in the system management information area of the recording medium is extracted. The extracted system management information is read by the system control means 109. The system control means 109 analyzes the contents described in the system management information and controls the system based on the described contents.

The output of the system management information detecting means 501 is
The PTS (Presentation Time Stump), which is the time information, is input to the bit stream analysis unit 401 and detected.

The PTS is managed by the system control means 109, and the decoding start time is controlled by the time information of the PTS. The data output from the bitstream analysis unit 401 is input to the data switching unit 402. The data switching unit 402 performs data switching based on the control signal generated by the system control unit 109 from the stream ID described in the system management information. Ie stream
The IDs are analyzed, and the audio streams of streams 0 to 15 are sent to the first audio data decoding means 403 and stream 16
31 audio streams are switched to be output to the second audio data decoding means 404.

The first audio data decoding means 403 and the first audio data decoding means 403
The audio stream input to the audio data decoding means 404 of No. 2 is decoded by each decoding means, and D /
The signals are D / A converted by the A converters 405 and 406 and then output from the audio signal output terminals 407 and 408. The control of the entire system is performed by the system control means 109 as in the case of the fourth embodiment.

FIG. 6 is a block diagram showing the arrangement of an audio data encoding apparatus according to the sixth embodiment of the present invention.

In FIG. 6, an audio signal input terminal 101
The audio signal input from the A / D converter 102
After being D-converted, the first audio data encoding means 10
3, input to the second audio data encoding means 106 using a high efficiency encoding method different from that of the first audio data encoding means 103. First audio data encoding means
In 103 and the second audio data coding means 106, the same audio signal is coded by each high efficiency coding system and output as another stream. The system control means 109 controls the entire system.

FIG. 7 is a block diagram showing the arrangement of an audio data coding / recording apparatus according to the seventh embodiment of the present invention.

In FIG. 7, an audio signal input terminal 101
The audio signal input from the A / D converter 102
After being D-converted, the first audio data encoding means 10
3, input to the second audio data encoding means 106 using a high efficiency encoding method different from that of the first audio data encoding means 103. First audio data encoding means
In 103 and the second audio data encoding means 106, the same audio signal is encoded by each high efficiency encoding method. First audio data encoding means 103, second
The output of the audio data encoding means 106 is
And then recorded on a single storage medium 202. The system control means 109 controls the entire system.

FIG. 8 is a block diagram showing the arrangement of an audio data decoding apparatus according to the eighth embodiment of the present invention.

In FIG. 8, an audio stream in which the same audio signal is encoded by a plurality of different high-efficiency encoding methods is input to the first audio data decoding means 403 and the second audio data decoding means 404. The control of the first audio data decoding means 403 and the second audio data decoding means 404 is performed by the system control means 109. If the input audio stream can be decoded by either the first audio data decoding unit 403 or the second audio data decoding unit 404, the output of the decodable audio data decoding unit is the first audio data decoding unit. When both the means 403 and the second audio data decoding means 404 are capable of decoding, the output of the decoding means selected by the system control means 109 is the D / A converter 406.
And is output from the audio signal output terminal 408.

FIG. 9 is a block diagram showing the arrangement of an audio data encoding apparatus according to the ninth embodiment of the present invention.

In FIG. 9, an audio signal input terminal 101
The audio signal input from is converted by the A / D converter 102, and then input to the encoding method selecting unit 901. The encoding method selection means 901 is the system control means 109.
In accordance with a command from the first audio data high efficiency encoding means 103, the second audio data high efficiency encoding means
Set 106 and sort the input data. In this embodiment, the same audio signal is set to be encoded by each encoder. In this case, the input data is input to both the first audio data high efficiency encoding means 103 and the second audio data high efficiency encoding means 106.

First audio data high efficiency encoding means 1
03, the audio stream high-efficiency coded by the second audio data high-efficiency coding means 106 is the stream I coded by the system stream coding means 107.
D, multiplexed with PTS (Presentation Time Stump) which is time information in the multiplexer 108. At this time, the audio streams high-efficiency-encoded by the first audio data encoding means 103 are stream 0 to 7, and the audio streams high-efficiency-encoded by the second audio data encoding means 106. Are assigned stream IDs corresponding to streams 16 to 23. At this time, the system control means 109 controls the entire system.

FIG. 10 is a block diagram showing the arrangement of an audio data coding / recording apparatus according to the tenth embodiment of the present invention.

In FIG. 10, an audio signal input terminal 10
The audio signal input from 1 is converted by the A / D converter 102 and then input to the encoding method selecting unit 901.
The encoding method selection means 901 is the system control means 1
According to the instruction from 09, the setting of the first audio data high efficiency encoding means 103 and the second audio data high efficiency encoding means 106 and the distribution of the input data are performed. In this embodiment, the same audio signal is set to be encoded by each encoder. In this case, the input data is input to both the first audio data high efficiency encoding means 103 and the second audio data high efficiency encoding means 106. First audio data high efficiency encoding means 103,
The audio stream highly efficient coded by the audio data highly efficient encoding means 106 of 2 is the PTS (Prese of the time information encoded by the system stream encoding means 107.
ntation Time Stump) and is multiplexed by the multiplexer 108.

The audio stream multiplexed by the multiplexer 108 is input to the system management information coding means 201, and the system management information is added to the system management information area of the recording medium. At this time, in the system management information, the streams 0 to 7 are included in the audio stream highly efficient encoded by the first audio data encoding means 103.
In addition, the stream 16 to 23 is added to the audio stream highly efficient encoded by the second audio data encoding means 106.
At least the stream ID corresponding to is described. The output of the system management information encoding means 201 is the storage medium 202.
Is entered and recorded.

At this time, the system control means 109 controls the entire system.

In the first to fifth embodiments of the present invention, the first high-efficiency audio data encoding method is used for the audio streams of streams 0 to 15, and the second audio stream of the second stream is used for the audio streams of streams 16 to 31. In the ninth to tenth embodiments, streams 0 to 7 are added to the audio data high efficiency encoding system.
The first audio data high-efficiency encoding method is defined for the audio stream of, and the second audio data high-efficiency encoding method is defined for the audio streams of streams 16 to 23. If it is a specific value associated with, the definition method is not limited to this. For example, if the stream number is odd,
The present invention is effective even if it is defined as the first audio data high-efficiency encoding method and the second audio data high-efficiency encoding method if the stream number is an even number. Further, although the audio data high-efficiency encoding method is two kinds in the present embodiment, it may be three kinds or more.

In the present embodiment, the case where the first audio data high efficiency coding means and the second audio data high efficiency coding means are separate blocks has been described. It does not matter even if it has one audio data high efficiency encoding means and second audio data high efficiency encoding means.

Furthermore, in the first to fifth, ninth and tenth embodiments of the present invention, the audio signal input terminals of the first audio data coding means and the second audio data coding means, the first audio data coding means, The case where the audio signal decoding means and the audio signal output terminal of the second audio data decoding means, and the input terminal and the output terminal of each stream are separate blocks has been described, but even if they have the same input terminal and output terminal. The present invention is effective.

In the above embodiment, the audio data encoding device and audio data encoding / recording device and the audio data decoding device and audio data decoding / reproducing device are shown separately, but the device has only a recording system or a reproduction system. However, the device may have a single recording / reproducing system.

Further, an optical disk, a magnetic tape, etc. can be considered as the storage medium of the above embodiment. Further, although the present embodiment has been described with respect to the case of recording and reproducing on the storage medium, this may be a communication medium.

Further, although the above embodiment has described the case of recording / reproducing only the audio signal, the present invention is also applicable to the case of recording / reproducing a video signal and an audio signal, or a video signal, an audio signal and other signals. Is valid.

[0046]

As described above, according to the present invention, the audio data coding having the audio data high efficiency coding means and the packet header coding means for coding the input audio signal by a plurality of different high efficiency coding systems. The device describes an audio data decoding means and a system stream analysis means for describing a specific value associated with a high efficiency encoding method in the stream ID described in the packet header and performing decoding by a plurality of decoding methods. The audio data decoding device having the above configuration is configured to identify the high-efficiency encoding method of each audio stream in the multiplexed stream by the above stream ID. Further, in the audio data coding and recording apparatus having the audio data high efficiency coding means and the system management information coding means for coding the input audio signal by a plurality of different high efficiency coding systems, the system management of the recording medium is performed. An audio data decoding / reproducing apparatus having a stream ID described in the information, in which a specific value associated with a high-efficiency encoding method is described, and having audio data decoding means and system control means for processing system management information. , The stream above
The ID is configured to identify the high-efficiency coding method of each audio stream in the multiplexed stream. Then, the same input audio signal is encoded by each of a plurality of different high-efficiency encoding schemes by audio data high-efficiency encoding means that encodes the input audio signal by a plurality of different high-efficiency encoding schemes. An audio data decoding means having a decoding method for decoding all or a part of the high-efficiency coding method is configured to reproduce the same audio signal by at least one kind of decoding method. Furthermore, an audio data high efficiency encoding means for encoding the input audio signal by a plurality of different high efficiency encoding methods, and an encoding method selecting means for selecting a high efficiency encoding method of the audio data high efficiency encoding means. In the audio data encoding device having the above, the same audio signal is encoded by each of a plurality of different high efficiency encoding systems by setting the encoding system selecting means.

As a result, the MPEG2 audio stream and the MPEG1 audio stream can be identified by the stream ID, the forward compatibility and the backward compatibility between the MPEG2 audio stream and the MPEG1 audio stream can be realized with a simple structure, and the different audio code can be used. This is to ensure the compatibility of media between regions where the digitalization method has been adopted.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an audio data encoding device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an audio data encoding / recording device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of an audio data encoding / recording device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of an audio data decoding device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of an audio data decoding / reproducing apparatus according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing the configuration of an audio data encoding device according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing the configuration of an audio data encoding / recording device according to a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of an audio data decoding device according to an eighth embodiment of the present invention.

FIG. 9 is a block diagram showing the configuration of an audio data encoding device according to a ninth embodiment of the present invention.

FIG. 10 is a block diagram showing the configuration of an audio data encoding / recording device according to a tenth embodiment of the present invention.

[Explanation of symbols]

 101,104 Audio signal input terminal 102,105 A / D converter 103 First audio data high-efficiency coding means 106 Second audio data high-efficiency coding means 107 System stream coding means 108 Multiplexer 109 System control means 201 System management Information coding means 202 Storage medium 301 Packet header coding means 401 Bit stream analysis means 402 Data switching means 403 First audio data decoding means 404 Second audio data decoding means 405,406 D / A converter 407,408 Audio signal output terminal 501 System management information detection means 901 Encoding method selection means

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masatoshi Shinbo 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (10)

[Claims]
1. An audio data high efficiency encoding means for encoding an input audio signal by a plurality of different high efficiency encoding systems, and a stream of an audio stream encoded by each audio data high efficiency encoding means. Audio data having a system stream encoding means for encoding an ID and multiplexing it with the audio stream, wherein a specific value associated with the high efficiency encoding system is described in the stream ID Encoding device.
2. An audio data high efficiency encoding means for encoding an input audio signal by a plurality of different high efficiency encoding systems, and a system management information encoding means for encoding system management information of a recording medium. An audio data encoding / recording device, characterized in that a specific value associated with the high efficiency encoding system is described in the stream ID described in the system management information.
3. An audio data high efficiency encoding means for encoding an input audio signal by a plurality of different high efficiency encoding methods, a packet header encoding means for encoding a packet header in a multiplexed stream, It has a multiplexing means for multiplexing the packet header and each audio stream coded by the audio data high efficiency coding means, and a system management information coding means for coding the system management information of the recording medium. Audio data characterized in that a specific value associated with the high efficiency encoding method is described in a stream ID described in the packet header, and the same content is recorded in the system management information. Encoding recording device.
4. An audio having at least one kind of decoding method among a plurality of decoding methods for decoding each high-efficiency coded audio stream coded by a plurality of different high-efficiency coding methods. It has a data decoding means and a system stream analysis means for detecting and analyzing the stream ID described in the packet header in the multiplexed stream, and is associated with the high-efficiency coding method described in the stream ID. An audio data decoding device, characterized in that the high-efficiency coding method of each audio stream in the multiplexed stream is identified from a specific value, and at least one kind of the audio stream is decoded.
5. An audio having at least one of the above decoding methods among a plurality of decoding methods for decoding each high efficiency encoding audio stream encoded by a plurality of different high efficiency encoding methods. The data decoding means and the system control means for processing the system management information of the recording medium are provided, and the multiplex is performed by the specific stream ID described in the system management information and associated with the high efficiency encoding method. An audio data decoding and reproducing apparatus, characterized in that each audio stream in the encoded stream is identified by a high-efficiency encoding method, and at least one type of the audio stream is decoded.
6. An audio data high efficiency encoding means for encoding an input audio signal by a plurality of different high efficiency encoding systems, wherein the same input audio signal is provided in the plurality of different high efficiency encoding systems. An audio data encoding device, characterized in that each of them is encoded.
7. A storage characterized in that the same input audio signal is encoded by each of a plurality of different high efficiency encoding systems, and the encoded audio stream is multiplexed and recorded on a single medium. Medium.
8. A decoding method for decoding all or part of the high-efficiency encoding method used for an audio stream in which the same audio signal is encoded by each of a plurality of different high-efficiency encoding methods. An audio data decoding / reproducing apparatus comprising an audio data decoding means, and reproducing the same audio signal by at least one kind of the decoding method.
9. An audio data high efficiency encoding means for encoding an input audio signal by a plurality of different high efficiency encoding methods, and a code for selecting the high efficiency encoding method of the audio data high efficiency encoding means. Conversion method selection means,
System stream encoding means for encoding the stream ID of the audio stream encoded by each of the audio data high efficiency encoding means and multiplexing with the audio stream, and setting the encoding method selecting means The same audio signal is encoded by each of the plurality of different high-efficiency encoding schemes, and the stream ID has a specific value associated with the setting of the high-efficiency encoding scheme and the encoding scheme selecting means. An audio data encoding device, characterized in that
10. An audio data high efficiency encoding means for encoding an input audio signal by a plurality of different high efficiency encoding methods, and a code for selecting the high efficiency encoding method of the audio data high efficiency encoding means. A coding method selecting means and a system management information coding means for coding the system management information of the recording medium, and by setting the coding method selecting means, the same audio signal is supplied to the plurality of different high efficiency coding methods. And coding a specific value associated with the setting of the high-efficiency coding system and the coding system selection means in the stream ID described in the system management information. Audio data encoding recording device.
JP8528995A 1995-04-11 1995-04-11 Audio data coding recording device, audio data decoding reproducing device and storage medium Granted JPH08287616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8528995A JPH08287616A (en) 1995-04-11 1995-04-11 Audio data coding recording device, audio data decoding reproducing device and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8528995A JPH08287616A (en) 1995-04-11 1995-04-11 Audio data coding recording device, audio data decoding reproducing device and storage medium

Publications (1)

Publication Number Publication Date
JPH08287616A true JPH08287616A (en) 1996-11-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP8528995A Granted JPH08287616A (en) 1995-04-11 1995-04-11 Audio data coding recording device, audio data decoding reproducing device and storage medium

Country Status (1)

Country Link
JP (1) JPH08287616A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7403699B2 (en) 2003-01-15 2008-07-22 Funai Electric Co., Ltd. Optical disc apparatus
US7672570B2 (en) 2003-06-18 2010-03-02 Panasonic Corporation Reproducing apparatus, program and reproducing method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7403699B2 (en) 2003-01-15 2008-07-22 Funai Electric Co., Ltd. Optical disc apparatus
US7672570B2 (en) 2003-06-18 2010-03-02 Panasonic Corporation Reproducing apparatus, program and reproducing method
US7881589B2 (en) 2003-06-18 2011-02-01 Panasonic Corporation Playback apparatus, program, playback method
US7885516B2 (en) 2003-06-18 2011-02-08 Panasonic Corporation Playback apparatus, program, playback method
US7912352B2 (en) 2003-06-18 2011-03-22 Panasonic Corporation Playback apparatus, program and playback method
US8145035B2 (en) 2003-06-18 2012-03-27 Panasonic Corporation Reproduction device, recording medium, program, and reproduction method
US8208795B2 (en) 2003-06-18 2012-06-26 Panasonic Corporation Playback apparatus, program, and playback method
US8503867B2 (en) 2003-06-18 2013-08-06 Panasonic Corporation Playback apparatus, program, and playback method

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