KR980004735A - System for recording and reproducing pulse code modulated digital audio signal - Google Patents

System for recording and reproducing pulse code modulated digital audio signal Download PDF

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Publication number
KR980004735A
KR980004735A KR1019960021573A KR19960021573A KR980004735A KR 980004735 A KR980004735 A KR 980004735A KR 1019960021573 A KR1019960021573 A KR 1019960021573A KR 19960021573 A KR19960021573 A KR 19960021573A KR 980004735 A KR980004735 A KR 980004735A
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South Korea
Prior art keywords
audio signal
recording
frequency
audio
reference unit
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KR1019960021573A
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Korean (ko)
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KR100223169B1 (en
Inventor
허정권
오영남
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김광호
삼성전자 주식회사
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Priority to KR1019960021573A priority Critical patent/KR100223169B1/en
Priority to NL1006310A priority patent/NL1006310C2/en
Priority to CNB971149836A priority patent/CN1146900C/en
Priority to GB9712341A priority patent/GB2314198B/en
Priority to JP9159062A priority patent/JP3053787B2/en
Publication of KR980004735A publication Critical patent/KR980004735A/en
Application granted granted Critical
Publication of KR100223169B1 publication Critical patent/KR100223169B1/en

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    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • G11B20/00007—Time or data compression or expansion
    • 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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

본 발명에 따른 오디오 기록 시스템은 디지털 오디오신호의 기설정된 기준단위내의 오디오샘플들을 주파수영역의 변환계수들로 변환시키며, 변환계수들을 기설정된 기록형식에 따라 형식화시킨다. 형식화된 신호는 기록 매체에 기록된다. 대응하는 오디오 재생 시스템은 자신이 갖는 디지털-아날로그 변환에 관련된 동작주파수와 위의 기록매체에 기록된 신호가 갖는 샘플링 주파수값에 근거하여 기록매체로부터 읽어낸 데이터에 들어있는 주파수영역의 오디오신호를 역형식화 및 역변환시킨다. 오디오 재생 시스템내의 역형식화기는 기록매체에 기록된 오디오신호의 샘플링주파수가 동작주파수보다 큰 경우, 주파수영역의 오디오신호중의 저주파영역에 속한 일부의 데이터만을 추출한다. 기록된 오디오신호의 샘플링주파수가 동작주파수보다 적은 경우, 역형식화기는 주파수영역의 모든 데이터를 출력하는 역형식화를 수행한다. 변환부는 주파수영역의 오디오신호를 시간영역의 신호로 변환시키는 것으로, 동작주파수보다 적은 샘플링주파수를 갖는 오디오신호에 대한 주파수 영역에서의 영채워넣기(zero padding)를 수행한다.The audio recording system according to the present invention converts audio samples within a predetermined reference unit of the digital audio signal into conversion coefficients in the frequency domain, and formats the conversion coefficients according to a preset recording format. The formatted signal is recorded on the recording medium. The corresponding audio reproduction system inverts the audio signal of the frequency domain contained in the data read from the recording medium based on its operating frequency related to the digital-to-analog conversion and the sampling frequency value of the signal recorded on the recording medium. Format and inverse transform. The deformatter in the audio reproduction system extracts only a part of data belonging to the low frequency region of the audio signal in the frequency domain when the sampling frequency of the audio signal recorded on the recording medium is larger than the operating frequency. If the sampling frequency of the recorded audio signal is less than the operating frequency, the inverse formatter performs inverse formatting to output all data in the frequency domain. The converting unit converts the audio signal in the frequency domain into a signal in the time domain, and performs zero padding in the frequency domain for the audio signal having a sampling frequency smaller than the operating frequency.

Description

펄스부호변조된 디지털 오디오신호의 기록 및 재생을 위한 시스템System for recording and reproducing pulse code modulated digital audio signal

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 바람직한 일 실시예에 따른 디지털 오디오신호 기록장치의 개략적인 블록도.1 is a schematic block diagram of a digital audio signal recording apparatus according to a preferred embodiment of the present invention.

제2도는 제1도 형식화부(30)의 상세 블록도.2 is a detailed block diagram of the first formatter 30;

제3도는 (a)-(d)는 본 발명에 따른 기록형식들을 설명하기 위한 도면들.3 (a)-(d) are diagrams for explaining recording formats according to the present invention.

제4도는 본 발명에 일 실시예에 따른 오디오 재생장치의 개략적인 블록도.4 is a schematic block diagram of an audio playback apparatus according to an embodiment of the present invention.

제5도는 본 발명에 따른 다른 형태의 오디오 재생장치를 나타낸 블록도.5 is a block diagram showing another type of audio reproducing apparatus according to the present invention.

Claims (2)

디지털 오디오신호를 디지털 기록매체에 기록하기 위한 오디오신호 기록 시스템에 있어서, 수신된 디지털 오디오신호로부터 각 기준단위가 기설정된 크기(size)를 갖는 기준단위계열(sequence)을 형성하는 기준단위 형성수단; 상기 기준단위계열을 수신하며, 각 기준단위내의 오디오샘플들을 주파수영역의 변환계수들로 변환시키고, 변환계수들을 담고있는 기준단위계열을 출력하는 변환수단; 상기 변환수단의 기준단위계열을 수신하며, 각 기준단위를 기설정된 기록형식에 따라 기록단위로 형식화시키며, 형식화의 결과로 얻어진 기록단위들의 계열을 출력하는 형식화수단; 및 상기 형식화수단의 기록단위계열을 상기 디지털 기록매체에 기록하는 기록수단을 포함하는 오디오 기록 시스템.An audio signal recording system for recording a digital audio signal on a digital recording medium, comprising: reference unit forming means for forming a reference unit sequence in which each reference unit has a predetermined size from the received digital audio signal; Conversion means for receiving the reference unit sequence, converting audio samples in each reference unit into conversion coefficients in a frequency domain, and outputting a reference unit sequence containing the conversion coefficients; Formatting means for receiving a reference unit sequence of said converting means, formatting each reference unit into recording units according to a preset recording format, and outputting a series of recording units obtained as a result of formatting; And recording means for recording the recording unit series of the formatting means on the digital recording medium. 디지털 기록매체에 기록된 주파수영역의 오디오신호를 재생하기 위한 오디오 재생 시스템에 있어서, 기설정된 동작주파수를 갖는 D/A변환기; 상기 기록매체에 기록된 신호를 읽어내며, 읽어낸 오디오신호의 샘플링 주파수 및 기록형식을 판별하며, 주파수판별결과 및 기록형식데이터와 함께 오디오신호를 출력하는 제1수단; 상기 제1수단에 출력 데이터를 수신하며, 수신된 데이터에 대응하는 샘플링주파수 및 기록형식과 상기 D/A변환기의 동작주파수에 대응하는 샘플링주파수에 근거하여 수신된 데이터에 들어있는 오디오신호를 역형식화시키는 제2수단; 및 상기 제2수단으로부터 출력되는 주파수영역의 오디오신호를 시간영역의 오디오샘플들로 변환시키며, 오디오샘플들을 상기 D/A변환기로 공급하는 제3수단을 포함하는 오디오 재생 시스템.An audio reproducing system for reproducing an audio signal in a frequency domain recorded on a digital recording medium, comprising: a D / A converter having a predetermined operating frequency; First means for reading a signal recorded on the recording medium, discriminating a sampling frequency and a recording format of the read audio signal, and outputting an audio signal together with the frequency discrimination result and the recording format data; Receiving output data to the first means, and inversely converting an audio signal contained in the received data based on a sampling frequency and a recording format corresponding to the received data and a sampling frequency corresponding to an operating frequency of the D / A converter. Second means for oxidizing; And third means for converting an audio signal in the frequency domain output from the second means into audio samples in the time domain, and supplying audio samples to the D / A converter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960021573A 1996-06-14 1996-06-14 System for recording and reproducing of pcm digital audio signals KR100223169B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1019960021573A KR100223169B1 (en) 1996-06-14 1996-06-14 System for recording and reproducing of pcm digital audio signals
NL1006310A NL1006310C2 (en) 1996-06-14 1997-06-13 System for recording and / or reproducing a digital pulse code modulation audio signal.
CNB971149836A CN1146900C (en) 1996-06-14 1997-06-14 System for recording and/or reproducing pulse code modulation digital audio signal
GB9712341A GB2314198B (en) 1996-06-14 1997-06-16 System for recording and/or reproducing a pulse code modulation digital audio signal
JP9159062A JP3053787B2 (en) 1996-06-14 1997-06-16 System for recording and reproducing pulse code modulated digital audio signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960021573A KR100223169B1 (en) 1996-06-14 1996-06-14 System for recording and reproducing of pcm digital audio signals

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KR980004735A true KR980004735A (en) 1998-03-30
KR100223169B1 KR100223169B1 (en) 1999-10-15

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JP (1) JP3053787B2 (en)
KR (1) KR100223169B1 (en)
CN (1) CN1146900C (en)
GB (1) GB2314198B (en)
NL (1) NL1006310C2 (en)

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Publication number Priority date Publication date Assignee Title
DE59913598D1 (en) 1999-07-15 2006-08-03 Micronas Gmbh Playback device
US7092340B2 (en) 2000-07-13 2006-08-15 Micronas Gmbh Playback apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85103921B (en) * 1985-05-31 1988-05-04 夏普公司 Pcm (pulse-code modulation) recording and playback device
AU631404B2 (en) * 1989-01-27 1992-11-26 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder and encoder/decoder for high-quality audio
EP0610975B1 (en) * 1989-01-27 1998-09-02 Dolby Laboratories Licensing Corporation Coded signal formatting for encoder and decoder of high-quality audio
NL9000338A (en) * 1989-06-02 1991-01-02 Koninkl Philips Electronics Nv DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM AND RECORD CARRIED OUT WITH THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE.
CN1062963C (en) * 1990-04-12 2001-03-07 多尔拜实验特许公司 Adaptive-block-lenght, adaptive-transform, and adaptive-window transform coder, decoder, and encoder/decoder for high-quality audio
ZA921988B (en) * 1991-03-29 1993-02-24 Sony Corp High efficiency digital data encoding and decoding apparatus
JP3498375B2 (en) * 1994-07-20 2004-02-16 ソニー株式会社 Digital audio signal recording device

Also Published As

Publication number Publication date
GB2314198B (en) 1998-09-09
JP3053787B2 (en) 2000-06-19
GB2314198A (en) 1997-12-17
CN1146900C (en) 2004-04-21
JPH1079166A (en) 1998-03-24
CN1173712A (en) 1998-02-18
KR100223169B1 (en) 1999-10-15
GB9712341D0 (en) 1997-08-13
NL1006310A1 (en) 1997-12-17
NL1006310C2 (en) 1998-10-29

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