KR970012478A - Video cassette recorder for video compression on demand - Google Patents

Video cassette recorder for video compression on demand Download PDF

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Publication number
KR970012478A
KR970012478A KR1019950025588A KR19950025588A KR970012478A KR 970012478 A KR970012478 A KR 970012478A KR 1019950025588 A KR1019950025588 A KR 1019950025588A KR 19950025588 A KR19950025588 A KR 19950025588A KR 970012478 A KR970012478 A KR 970012478A
Authority
KR
South Korea
Prior art keywords
signal
head
tape
video
read
Prior art date
Application number
KR1019950025588A
Other languages
Korean (ko)
Other versions
KR0160891B1 (en
Inventor
이진구
Original Assignee
배순훈
대우전자 주식회사
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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950025588A priority Critical patent/KR0160891B1/en
Publication of KR970012478A publication Critical patent/KR970012478A/en
Application granted granted Critical
Publication of KR0160891B1 publication Critical patent/KR0160891B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/4673—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/66—Threading; Loading; Automatic self-loading
    • G11B15/665—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container
    • G11B15/6653—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis
    • G11B5/534—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis inclined relative to the direction of movement of the tape, e.g. for helicoidal scanning

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

본 발명은 소정의 압축율로 테이프(T)에 기록된 신호를 시간 신장하여 독취하는 시간 압축 주문형 비데오용 비데오 카세트 레코더에 관한 것으로서, 기록시와 동일한 속도로 회전하는 드럼에 장착되어 시간 압축율과 반비례하는 속도로 저속 주행하는 테이프(T)에 기록된 신호를 독취하는 제1 및 제2헤드(R,L)와; 스위칭 신호에 따라 스위칭되어 상기 제1 및 제2헤드에 독취된 신호를 순차적으로 출력하는 스위칭부(10)와; 상기 제1헤드(R)가 동일한 아지머스각을 갖는 하나의 트랙을 순차적으로 스캐닝 하는 동안에는 상기 제1헤드(R)에 의하여 독취된 신호를 출력하게 하며, 상기 제2헤드(L)가 동일한 아지머스각을 갖는 하나의 트랙을 순차적으로 스캐닝 하는 동안에는 상기 제2헤드(L)에 의하여 독취된 신호를 출력하게 하는 스위칭 신호를 출력하는 제어부(30)와; 상기 스위칭부(10)로부터 인가되는 신호를 재생 처리하는 처리 회로(50)를 구비한다. 즉, 본 발명은 시간 압축 주문형 비데오용 VCR에서 압축된 영상을 복원할 때에 테이프를 간헐 주행시키는 것이 아니라 압축율에 반비례하는 속도로 테이프를 주행시키며 테이프에 기록된 신호를 독취할 수 있게 되어, 간헐 주행에 의하여 테이프가 손상되는 것을 방지할 수 있으며, 간헐 주행시보다 서보계의 구성이 간단해진다는 효과가 있다.The present invention relates to a video cassette recorder for a time-compression custom video for elongating and reading out a signal recorded on a tape (T) at a predetermined compression rate. First and second heads R and L for reading out a signal recorded on the tape T running at a low speed; A switching unit 10 which is switched according to a switching signal and sequentially outputs signals read to the first and second heads; While the first head R sequentially scans one track having the same azimuth angle, the first head R outputs a signal read by the first head R, and the second head L is the same azimuth. A controller (30) for outputting a switching signal for outputting a signal read by the second head (L) while sequentially scanning one track having a mus angle; A processing circuit 50 for reproducing the signal applied from the switching unit 10 is provided. In other words, the present invention allows the tape to be read at a speed inversely proportional to the compression rate, instead of intermittently running the tape when restoring the compressed image in the VCR for time compression video-on-demand video. The tape can be prevented from being damaged, and the structure of the servo system can be made simpler than in intermittent travel.

Description

시간 압축 주문형 비데오용 비데오 카세트 레코더Video cassette recorder for video compression on demand

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

제3도는 본 발명에 따른 사간 압축 주문형 비데오용 비데오 카세트 레코더에서 검출되는 엔벨로프 파형의 부분 상세도.3 is a partial detail view of an envelope waveform detected in a video cassette recorder for inter-compression on-demand video according to the present invention.

Claims (1)

소정의 압축율로 테이프(T)에 기록된 신호를 시간 신장하여 독취하는 시간 압축 주문형 비데오용 비데오 카세트 레코더에 있어서, 기록시와 동일한 속도로 회전하는 드럼에 장착되어 시간 압축율과 반비례하는 속도로 저속 주행하는 테이프(T)에 기록된 신호를 독취하는 제1 및 제2헤드(R,L)와; 스위칭 신호에 따라 스위칭되어 상기 제1 및 제2헤드에 독취된 신호를 순차적으로 출력하는 스위칭부(10)와; 상기 제1헤드(R)가 동일한 아지머스각을 갖는 하나의 트랙을 순차적으로 스캐닝 하는 동안에 상기 제1 헤드(R)에 의하여 독출된 신호를 출력하게 하며, 상기 제2헤드(L)가 동일한 아지머스각을 갖는 하나의 트랙을 순차적으로 스캐닝 하는 동안에는 상기 제2헤드(L)에 의하여 독출된 신호를 출력하게 하는 스위칭 신호를 출력하는 제어부(30)와; 상기 스위칭부(10)로부터 인가되는 신호를 재생 처리하는 처리 회로(50)를 구비하는 시간 압축 주문형 비데오용 비데오 카세트레코더.A time-compressed video cassette recorder for time-extending and reading out a signal recorded on a tape (T) at a predetermined compression rate. First and second heads R and L for reading out a signal recorded on the tape T; A switching unit 10 which is switched according to a switching signal and sequentially outputs signals read to the first and second heads; The first head R outputs a signal read by the first head R while sequentially scanning one track having the same azimuth angle, and the second head L is the same azimuth. A controller 30 for outputting a switching signal for outputting a signal read by the second head L while sequentially scanning one track having a mus angle; And a processing circuit (50) for reproducing a signal applied from said switching section (10). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950025588A 1995-08-21 1995-08-21 Video cassette recorder for video on demand KR0160891B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950025588A KR0160891B1 (en) 1995-08-21 1995-08-21 Video cassette recorder for video on demand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950025588A KR0160891B1 (en) 1995-08-21 1995-08-21 Video cassette recorder for video on demand

Publications (2)

Publication Number Publication Date
KR970012478A true KR970012478A (en) 1997-03-29
KR0160891B1 KR0160891B1 (en) 1998-12-15

Family

ID=19423832

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950025588A KR0160891B1 (en) 1995-08-21 1995-08-21 Video cassette recorder for video on demand

Country Status (1)

Country Link
KR (1) KR0160891B1 (en)

Also Published As

Publication number Publication date
KR0160891B1 (en) 1998-12-15

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