KR970008025A - Frequency compensator of magnetic recording and reproducing system - Google Patents

Frequency compensator of magnetic recording and reproducing system Download PDF

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Publication number
KR970008025A
KR970008025A KR1019950020083A KR19950020083A KR970008025A KR 970008025 A KR970008025 A KR 970008025A KR 1019950020083 A KR1019950020083 A KR 1019950020083A KR 19950020083 A KR19950020083 A KR 19950020083A KR 970008025 A KR970008025 A KR 970008025A
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KR
South Korea
Prior art keywords
signal
audio signal
recording
frequency
converter
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KR1019950020083A
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Korean (ko)
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KR100203242B1 (en
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강용진
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김광호
삼성전자 주식회사
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Priority to KR1019950020083A priority Critical patent/KR100203242B1/en
Publication of KR970008025A publication Critical patent/KR970008025A/en
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Publication of KR100203242B1 publication Critical patent/KR100203242B1/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

Abstract

본 발명은 VCR(Video Cassette Recorder)의 오디오처리장치에 관한 것으로, 오디오변조방식(AM)의 SLP=EP와 같은 저속모드로 자기기록테이프에 영상신호를 기록하면 고주파성분은 기록되지 않아 소정 주파수 이상의 신호는 재생이 불가능했던 종래에 비해 소정의 고주파를 저주파로 변환하여 기록하고, 재생시 이를 다시 원래의 신호로 복언하는 키제어수단을 구비함으로써 자기녹재시 음질을 보상할 수 있는 잇점을 제공한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio processing apparatus of a VCR (Video Cassette Recorder). When an image signal is recorded on a magnetic recording tape in a low speed mode such as SLP = EP of an audio modulation method (AM), a high frequency component is not recorded so that a predetermined frequency or more is exceeded. Compared with the conventional one, where a signal cannot be reproduced, a signal is converted into a high frequency signal to a low frequency, and provided with a key control means for returning it back to the original signal during reproduction, thereby providing an advantage of compensating sound quality during magnetic recording.

Description

자기기록재생시스템의 주파수보상장치Frequency compensator of magnetic recording and reproducing system

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

제1도는 본 발명의 바람직한 일 실시예에 따른 자기기록재생시스템의 주파수보상장치의 기록계를 설명하기 위한 구성도.1 is a block diagram illustrating a recording system of a frequency compensating device of a magnetic recording and reproducing system according to an embodiment of the present invention.

Claims (4)

자기기록테이프에 소정의 고주파 오디오신호를 기록하는 자기기록시스템의 오디오신호처리장치에 있어서, 소정의 고주파 오디오신호를 기준속도로 기록할때는 헤드로 바로 전달하도록 연결되고, 기준속도 미만으로 기록할때는 상기 고주파 오디오신호를 키제어수단으로 전달하도록 연결된 스위칭수단; 외부로부터 인가되는 기록속도선택신호에 따라 상기 스위칭수단을 절환하고, 기준속도 미만으로 기록할때 상기 오디오신호가 기록되는 상기 자기기록테이프의 콘트롤트랙에 기록주파수변환표식신호를 부가하는 제어부;및 상기 스위칭수단으로부터 증폭된 상기 고주파 오디오신호를 인가받아 소정의 기준이 되는 저주파 오디오신호를 변환하는 키제어 수단을 포함하는 자기기록시스템의 주파수보상장치.An audio signal processing apparatus of a magnetic recording system for recording a predetermined high frequency audio signal on a magnetic recording tape, wherein the predetermined high frequency audio signal is connected so as to be transferred directly to the head when recording at a reference speed, and the high frequency signal is recorded when the recording speed is lower than the reference speed. Switching means connected to transmit an audio signal to the key control means; A control unit for switching the switching means according to a recording speed selection signal applied from the outside and adding a recording frequency conversion marker signal to a control track of the magnetic recording tape on which the audio signal is recorded when recording at a reference speed less than; And a key control means for receiving the amplified high frequency audio signal from the switching means and converting a low frequency audio signal serving as a predetermined reference. 제1항에 있어서, 상기 키제어수단은 상기 스위칭수단으로부터 소정 고주파 오디오신호를 인가받아 디지탈 변환하는 A/D변환부; 상기 A/D변환부로부터 인가되는 소정 고주파 오디오신호를 소정 기준 저주파 오디오신호로 변환하는 주파수변환부: 상기 주파수변환부로부터 변환된 저주파 오디오신호를 인가받아 아날로그신호로 변환하는 D/A변환부를 포함하는 것을 특징으로 하는 자기기록시스템의 주파수보상장치.2. The apparatus of claim 1, wherein the key control unit comprises: an A / D conversion unit for receiving a high frequency audio signal from the switching unit and performing digital conversion; A frequency converter for converting a predetermined high frequency audio signal applied from the A / D converter into a predetermined reference low frequency audio signal: A D / A converter for converting the low frequency audio signal converted from the frequency converter into an analog signal A frequency compensation device of a magnetic recording system, characterized in that. 자기기록테이프에 소정의 기준 저주파로 기록된 신호를 독출하여 재생하는 자기재생시스템의 오디오신호 처리장치에 있어서, 상기 자기기록테이프의 콘트롤트랙에 기록된 기록주파수변환표식신호의 유무에 따라 스위칭수단으로 스위칭절환신호를 출력하는 제어부; 상기 제어부의 스위칭절환신호에 따라 기록주파수표식신호가 검출되지 않으면 독출된 신호를 그대로 출력하도록 연결되고, 기록주파수표식신호가 검출되면 독출된 저주파 오디오신호를 키제어수단으로 출력하는 연결된 스위칭수단; 및 상기 기록주파수표식신호가 검출되어 상기 스위칭수단으로부터 저주파 오디오신호가 인가되면, 기록되기 전의 소정 고주파신호로 변환하는 키제어수단을 포함하는 자기재생시스템의 주파수보상장치.An audio signal processing apparatus of a magnetic reproducing system which reads out and reproduces a signal recorded on a magnetic recording tape at a predetermined reference low frequency, wherein the switching means is switched in accordance with the presence or absence of a recording frequency conversion marker signal recorded on a control track of the magnetic recording tape. A controller for outputting a switching switching signal; Connected switching means for outputting the read signal as it is if the recording frequency marker signal is not detected according to the switching switching signal of the controller, and for outputting the read low frequency audio signal to the key control means when the recording frequency marker signal is detected; And key control means for converting a predetermined high frequency signal before recording when the recording frequency marker signal is detected and a low frequency audio signal is applied from the switching means. 제3항에 있어서, 상기 키제어수단은 상기 스위칭수단으로부터 소정 기준 저주파로 기록된 오디오신호를 인가받아 디지탈 변환하는 A/D변환부; 상기 A/D변환부로부터 인가되는 저주파 오디오신호를 기록되기 전의 소정 고주파 오디오신호로 변환하는 주파수변환부; 및 상기 주파수변환부로부터 변환된 고주파 오디오신호를 인가받아 아날로그로 변환하는 D/A변환부로 포함하는 것을 특징으로 하는 자기기록시스템의 주파수보상장치.4. The apparatus of claim 3, wherein the key control means comprises: an A / D converter for digitally converting an audio signal recorded at a predetermined reference low frequency from the switching means; A frequency converter converting the low frequency audio signal applied from the A / D converter into a predetermined high frequency audio signal before recording; And a D / A converter which receives the high frequency audio signal converted from the frequency converter and converts the analog signal into an analog signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950020083A 1995-07-08 1995-07-08 Device for the frequency compensation of a magnetic recording/reproducing equipment KR100203242B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950020083A KR100203242B1 (en) 1995-07-08 1995-07-08 Device for the frequency compensation of a magnetic recording/reproducing equipment

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Application Number Priority Date Filing Date Title
KR1019950020083A KR100203242B1 (en) 1995-07-08 1995-07-08 Device for the frequency compensation of a magnetic recording/reproducing equipment

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KR970008025A true KR970008025A (en) 1997-02-24
KR100203242B1 KR100203242B1 (en) 1999-06-15

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