KR930014479A - VTR audio recording device and its formatting method - Google Patents

VTR audio recording device and its formatting method Download PDF

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Publication number
KR930014479A
KR930014479A KR1019910023117A KR910023117A KR930014479A KR 930014479 A KR930014479 A KR 930014479A KR 1019910023117 A KR1019910023117 A KR 1019910023117A KR 910023117 A KR910023117 A KR 910023117A KR 930014479 A KR930014479 A KR 930014479A
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KR
South Korea
Prior art keywords
signal
audio
sif
circuit
frequency
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Application number
KR1019910023117A
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Korean (ko)
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KR940000971B1 (en
Inventor
임만규
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강진구
삼성전자 주식회사
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Priority to KR1019910023117A priority Critical patent/KR940000971B1/en
Publication of KR930014479A publication Critical patent/KR930014479A/en
Application granted granted Critical
Publication of KR940000971B1 publication Critical patent/KR940000971B1/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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1201—Formatting, e.g. arrangement of data block or words on the record carriers on tapes
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
    • G11B20/10027—Improvement or modification of read or write signals analog processing for digital recording or reproduction adjusting the signal strength during recording or reproduction, e.g. variable gain amplifiers
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

내용 없음No content

Description

VTR의 오디오 레코딩장치와 그 포맷팅 방법VTR audio recording device and its formatting method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도의 (a),(b)는 이 발명에 따른 VTR의 오디오 레코딩 장치를 나타낸 것으로서, (a)는 레코딩루트를 나타낸 블록구성도이고, (b)는 재생루트를 나타낸 블록구성도.(A) and (b) of FIG. 1 show an audio recording apparatus of a VTR according to the present invention, (a) is a block diagram showing a recording route, and (b) is a block diagram showing a reproduction route.

제2도는 제1도의 세부구성의 일실시예를 나타낸 블록도.2 is a block diagram showing an embodiment of the detailed configuration of FIG.

제3도는 제2도에서 FM 검파회로와 주파수 천이부의 다른 실시도.3 is another embodiment of the FM detector and the frequency shifter in FIG.

제4도는 제2도에서 FM 검파회로와 주파수 천이부의 또다른 실시도.4 is another embodiment of the FM detector and the frequency shifter in FIG.

제5도는 제1도 (b)의 다른 실시예를 나타낸 블록도이다.5 is a block diagram showing another embodiment of FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : SIF 회로 10-1 : 필터회로10: SIF circuit 10-1: filter circuit

20,20A : FM 검파회로 30 : 디엠파시스회로20,20A: FM detection circuit 30: DM Emphasis circuit

40 : 주파수천이부 50 : 밴드패스필터회로40: frequency shift unit 50: band pass filter circuit

12,13 : 필터 14 : QPSK12,13: Filter 14: QPSK

21,22,21A,22A : FM 검파부 31,32 : 디엠파시스부21,22,21A, 22A: FM detector 31,32: DM Emphasis unit

33,34,36 : 라인앰프 35 : NICAM 디코더33,34,36: line amplifier 35: NICAM decoder

41,43 : 평형변조기 42,44,45 : 발진기41,43: Balance modulator 42,44,45: Oscillator

51,52 : 밴드패스필터 61 : 레코딩앰프51,52: Band pass filter 61: Recording amplifier

62 : 재생앰프 HD : 헤드62: Playback Amplifier HD: Head

Claims (4)

비데오신호를 제거하고 SIF 신호만을 출력하는 SIF 회로와, 이 SIF 회로에서 출력되는 FM 변조된 신호를 검파하여 오디오신호를 검출하는 FM 검파회로와, FM 검파회로에서 출력되는 오디오신호를 디엠파시스 처리하여 오디오출력하는 디엠파시스회로와, 레코딩 앰프, 재생앰프 및 헤드들을 포함하고 있는 VTR의 오디오 처리장치에 있어서, 레코딩시 상기 SIF 회로(10)에서 출력되는 오디오 변조신호를 각 방송방식에 따른 FM 캐리어주파수로 변환시키고, 재생시에는 FM 캐리어주파수를 상기 SIF 회로(10)의 오디오변조신호의 주파수로 변환시키는 주파수 천이부(40)와, 레코딩시 주파수천이부에서 출력되는 신호를 중심캐리어 대역으로 필터링하여 레코딩앰프(61)에 제공하며, 재생시 재생앰프(62)의 출력을 필터링하여 주파수 천이부(40)에 제공하는 밴드패스 필터부(50)와,를 더 구비시켜서 된 VTR의 오디오 레코딩 장치.De-emphasis processing of the SIF circuit for removing the video signal and outputting only the SIF signal, the FM detection circuit for detecting the audio signal by detecting the FM modulated signal output from the SIF circuit, and the audio signal output from the FM detection circuit. In the audio processing apparatus of the VTR including a de-emphasis circuit for outputting audio, and a recording amplifier, a reproduction amplifier, and heads, the audio modulation signal output from the SIF circuit 10 during recording is FM A frequency shifter 40 for converting the carrier frequency to a frequency of the audio modulated signal of the SIF circuit 10 during reproduction, and filtering the signal output from the frequency shifter during recording to the center carrier band. And a band pass filter for filtering the output of the playback amplifier 62 and providing it to the frequency shifter 40 during playback. The audio recording apparatus of the VTR provided further with 50. 제1항에 있어서, 상기 주파수 천이부(40)는, SIF 회로(10)의 출력을 좌,우신호의 중심캐리어 주파수로 천이시키는 평형변조기(41),(43)와, 상기 평형변조기(41),(43) 각각에 SIF 신호를 중심캐리어 주파수로 천이시키기 위한 차신호를 제공하는 발진기(42),(44)로 된 VTR의 오디오 레코딩 장치.2. The frequency shifter (40) according to claim 1, wherein the frequency shifter (40) comprises: balance modulators (41) and (43) for shifting the output of the SIF circuit (10) to the center carrier frequency of the left and right signals; And (43) an audio recording apparatus of a VTR comprising oscillators (42) and (44) for providing a difference signal for shifting the SIF signal to the center carrier frequency, respectively. SIF 신호를 중심 캐리어 주파수로 변환시키고 대역 필터링후에 레코딩시키는 레코딩과정과, 재생앰프를 통해 출력되는 재생신호를 대역 필터링후에 SIF 신호의 출력주파수로 변환시키며, 이 변환된 오디오 FM 신호를 FM 검파한후 디엠파시스 처리하는 재생과정으로 이루어진 VTR의 오디오 신호 포맷팅 방법.The recording process converts the SIF signal into the center carrier frequency and records the band after filtering, and converts the playback signal output through the playback amplifier to the output frequency of the SIF signal after band filtering, and then FM-detects the converted audio FM signal. An audio signal formatting method of a VTR, which is composed of a playback process performed by de-emphasis processing. 제3항에 있어서, 상기 재생과정은 재생앰프를 통해 출력되는 재생신호를 대역필터링후에 FM 검파한후 디엠파시스 처리하는 과정으로 이루어진 VTR의 오디오신호 포맷팅 방법.The audio signal formatting method of claim 3, wherein the reproducing process comprises demultiplexing the FM signal after band-filtering the reproducing signal output through the reproducing amplifier. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910023117A 1991-12-16 1991-12-16 Audio recording apparatus and formating method of vtr KR940000971B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910023117A KR940000971B1 (en) 1991-12-16 1991-12-16 Audio recording apparatus and formating method of vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910023117A KR940000971B1 (en) 1991-12-16 1991-12-16 Audio recording apparatus and formating method of vtr

Publications (2)

Publication Number Publication Date
KR930014479A true KR930014479A (en) 1993-07-23
KR940000971B1 KR940000971B1 (en) 1994-02-07

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KR1019910023117A KR940000971B1 (en) 1991-12-16 1991-12-16 Audio recording apparatus and formating method of vtr

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