KR920022253A - Drum Servo Control of Video Cassette Recorder - Google Patents

Drum Servo Control of Video Cassette Recorder Download PDF

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Publication number
KR920022253A
KR920022253A KR1019910007235A KR910007235A KR920022253A KR 920022253 A KR920022253 A KR 920022253A KR 1019910007235 A KR1019910007235 A KR 1019910007235A KR 910007235 A KR910007235 A KR 910007235A KR 920022253 A KR920022253 A KR 920022253A
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KR
South Korea
Prior art keywords
speed
phase
data
signal
control signal
Prior art date
Application number
KR1019910007235A
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Korean (ko)
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KR940000645B1 (en
Inventor
이홍석
Original Assignee
이헌조
주식회사 금성사
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.)
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Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019910007235A priority Critical patent/KR940000645B1/en
Publication of KR920022253A publication Critical patent/KR920022253A/en
Application granted granted Critical
Publication of KR940000645B1 publication Critical patent/KR940000645B1/en

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Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00Driving, 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
    • G11B15/18Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46Controlling, regulating, or indicating speed
    • G11B15/467Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/473Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Velocity Or Acceleration (AREA)

Abstract

내용 없음.No content.

Description

비디오 카세트 레코더의 드럼 서보 제어장치Drum Servo Control of Video Cassette Recorder

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

제2도는 본 발명 비디오 카세트 레코더의 드럼서보 제어 시스템 구성도,2 is a configuration diagram of a drum servo control system of a video cassette recorder according to the present invention;

제3도는 제2도의 드럼주파수신호에 따른 속도에러전압 변환부 및 속도검출 카운터부의 출력 파형도,3 is an output waveform diagram of a speed error voltage converter and a speed detection counter according to the drum frequency signal of FIG.

제4도는 제2도의 위상신호에 따른 위상에러 전압 발생부 및 위상검출 카운터부의 출력파형도.4 is an output waveform diagram of a phase error voltage generator and a phase detection counter according to the phase signal of FIG.

Claims (1)

드럼주파수 헤드(12) 및 위상헤드(13)로부터 검출된 드럼모터(10)의 회전속도와 위상을 제어신호 발생부(1)(2)를 통해 파형정형화하고, 속도검출 카운터부(3) 및 위상검출 카운터부(4)에서 속도, 위상을 계수하여 드럼모터(10)를 제어하는 드럼서보 제어 시스템에 있어서, 상기 속도검출 카운터부(4) 및 위상검출 카운터부(4)의 속도, 위상 데이타를 래치하는 래치부(14)(15)와, 상기 래치부(14)의 속도 데이타에서 에러전압을 검출하여 그에 대한 속도 제어신호를 출력하는 속도 에러전압 변환부(5)와, 상기 래치부(14)의 속도 데이타를 순차적으로 저장하는 데이타 저장부(18)(19)와, 상기 데이타 저장부(18)(19)의 속도주기 및 목표속도주기 데이타를 비교하여 그에 따른 속도에러신호를 출력는 데이타 비교부(21)와, 상기 데이타 비교부(21)의 속도에러신호에 따라 구동하여 고정된 속도제어신호를 발생하는 속도검출 기준신호 발생부(17)와, 상기 데이타 비교부(21)의 속도에러신호에 따라 구동하여 속도에러전압 변환부(5) 및 속도검출 기준신호 발생부(17)의 속도제어신호를 선택하는 속도제어 선택부(22)와, 상기 래치부(15)의 위상데이타를 판별하는 위상검출 데이타 판별부(20)와, 상기 데이타 비교부(21)의 속도에러 신호에 따라 위상 검출 데이타 판별부(20)의 데이타를 위상제어신호를 출력하는 위상에러전압 변환부(6)와, 상기 위상 검출 데이타 판별부(20)의 제어신호에 따라 위상에러전압 변환부(6)의 위상제어신호를 보상하는 보상부(23)와, 상기 속도제어 선택부(22) 및 보상부(23)의 속도 제어신호를 바이어스 발생부(24)에서 발생된 바이어스신호와 합산하는 가산부(7)와, 상기 가산부(7)의 출력신호를 아날로그 신호로 변환하여 모터구동부(9)를 통해 드럼모터(10)를 제어하는 디지털/아날로그 변환부(8)로서 구성함을 특징으로 한 비디오 카세트 레코더의 드럼서보 제어장치.The rotation speed and phase of the drum motor 10 detected from the drum frequency head 12 and the phase head 13 are waveform-formed through the control signal generators 1 and 2, and the speed detection counter 3 and In the drum servo control system which controls the drum motor 10 by counting the speed and phase in the phase detection counter 4, the speed and phase data of the speed detection counter 4 and the phase detection counter 4, respectively. A latch unit 14 (15) for latching the latch, a speed error voltage converter 5 for detecting an error voltage from the speed data of the latch unit 14, and outputting a speed control signal thereto; The data storage unit 18 (19) for sequentially storing the speed data of 14) and the speed period and target speed period data of the data storage unit 18 (19) are compared to output data according to the speed error signal. Drives in accordance with the speed error signal of the comparator 21 and the data comparator 21 And a speed error reference signal generator 17 for generating a fixed speed control signal and a speed error voltage converter 5 and a speed detection reference signal generator for driving in accordance with the speed error signal of the data comparator 21. A speed control selector 22 for selecting the speed control signal of (17), a phase detection data discriminator 20 for discriminating the phase data of the latch unit 15, and a speed of the data comparator 21; A phase error voltage converter 6 for outputting a phase control signal to the data of the phase detection data determination unit 20 according to the error signal, and a phase error voltage converter according to the control signal of the phase detection data determination unit 20. Compensating unit 23 for compensating the phase control signal of (6), and the speed control signal of the speed control selector 22 and the compensation unit 23 and the bias signal generated by the bias generator 24 An adder 7 and an output signal of the adder 7 into an analog signal And a digital / analog converting section (8) for controlling the drum motor (10) through the motor driving section (9). ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019910007235A 1991-05-03 1991-05-03 Drum servo control apparatus for vtr KR940000645B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910007235A KR940000645B1 (en) 1991-05-03 1991-05-03 Drum servo control apparatus for vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910007235A KR940000645B1 (en) 1991-05-03 1991-05-03 Drum servo control apparatus for vtr

Publications (2)

Publication Number Publication Date
KR920022253A true KR920022253A (en) 1992-12-19
KR940000645B1 KR940000645B1 (en) 1994-01-26

Family

ID=19314104

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910007235A KR940000645B1 (en) 1991-05-03 1991-05-03 Drum servo control apparatus for vtr

Country Status (1)

Country Link
KR (1) KR940000645B1 (en)

Also Published As

Publication number Publication date
KR940000645B1 (en) 1994-01-26

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