KR930015686A - How to control the capstan motor position of the camcorder - Google Patents

How to control the capstan motor position of the camcorder Download PDF

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Publication number
KR930015686A
KR930015686A KR1019910023318A KR910023318A KR930015686A KR 930015686 A KR930015686 A KR 930015686A KR 1019910023318 A KR1019910023318 A KR 1019910023318A KR 910023318 A KR910023318 A KR 910023318A KR 930015686 A KR930015686 A KR 930015686A
Authority
KR
South Korea
Prior art keywords
capstan motor
time
pulses
speed
detected
Prior art date
Application number
KR1019910023318A
Other languages
Korean (ko)
Inventor
민병훈
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.)
Filing date
Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019910023318A priority Critical patent/KR930015686A/en
Publication of KR930015686A publication Critical patent/KR930015686A/en

Links

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
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • 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

Landscapes

  • Control Of Electric Motors In General (AREA)

Abstract

본 발명은 캠코더의 캡스턴모터 위치제어 방법에 관한 것으로, 일반적인 브이씨알은 프레임 재생시 캡스턴모터에서 발생하는 펄스를 검출하여 한프레임의 펄스가 검출되면 캡스턴모터에 역방향신호를 주어 정지시키고 다시 한프레임씩 이동시키는 방법으로 모터를 제어하였으므로 화면에 노이즈바가 발생하게 되는 문제점이 있었다.The present invention relates to a capstan motor position control method of a camcorder, in which a general VRC detects a pulse generated from a capstan motor during frame reproduction, and when a pulse of one frame is detected, the capstan motor is stopped by giving a reverse signal to the capstan motor. Since the motor was controlled by the moving method, a noise bar was generated on the screen.

이를 보완하기 위한 본 발명은 캡스턴모터의 속도를 검출하여 그 검출한 속도와 기준속도를 비교한 후 같으면 캡스턴모터에서 발생하는 펄스수로 정지시점을 구하여 정확히 트랙의 정위치에 정지시킴과 아울러 한 프레임씩 정확히 이동시킴으로써 화면에 노이즈바가 발생하지 않고 선명 화질을 시청할 수 있는 것이다.In order to compensate for this, the present invention detects the speed of the capstan motor, compares the detected speed with the reference speed, and if so, obtains a stop point based on the number of pulses generated by the capstan motor, and stops it at the exact position of the track. By moving it correctly, you can watch clear picture without noise bar on the screen.

Description

캠코더의 캡스턴모터 위치제어 방법How to control the capstan motor position of the camcorder

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

제1도는 본 발명 캠코더의 캡스턴모터 위치제어 시스템 구성도, 제2도는 일반적인 브이씨알의 테이프 포멧도, 제3도는 제1도의 각부 동작 타이밍도.1 is a configuration diagram of a capstan motor position control system of a camcorder of the present invention, FIG. 2 is a tape format of a general VR, and FIG. 3 is an operation timing chart of FIG.

Claims (1)

프레임재생 모드시 초기에 캡스턴모터에 최대전압을 인가하여 구동시키는 제1단계와, 상기 단계에서 캡스턴모터의 펄스수를 계수하여 속도를 검출하는 제2단계와, 상기 검출된 속도와 기준속도(Wref)를 비교하여 같으면 그 계수한 펄스를 저장하는 제3단계와, 상기 제3단계에서 저장된 펄스수까지 걸리는 시간(t1)을 검출하고 그 검출된 시간(t1)과 설정된 한프레임의 시간(tf)을 계산하여 정지시점의 시간(t2)을 구하는 제4단계와, 상기 정지시점의 시간(t2)과 타이머(t)를 비교하여 같으면 캡스턴모터에 최대역전압을 인가하고 방향신호를 로우신호로 인가하는 제5단계와, 상기 제5단계 후 저장된 펄스수를 리세트하고 다시 캡스턴모터의 펄스수를 카운트하여 저장하는 제6단계와, 상기 저장된 펄스수와 현재 검출되는 펄스수를 비교하여 같으면 모터를 정지시키는 제7단계로 이루워짐을 특징으로 한 캠코더의 캡스턴모터 위치제어 방법.A first step of initially applying a maximum voltage to the capstan motor in a frame regeneration mode and driving the capstan motor; a second step of counting the number of pulses of the capstan motor in the step of detecting the speed; and the detected speed and the reference speed (Wref). ) Is equal to, and detects, the third step of storing the counted pulse and the time t1 to the number of stored pulses in the third step, and the detected time t1 and the set time ttf Step 4 to obtain the time t2 at the time of stopping, and comparing the time t2 at the time of stopping with the timer t, and applying the maximum reverse voltage to the capstan motor and applying the direction signal as a low signal. And a fifth step of resetting the number of stored pulses after the fifth step and counting and storing the number of pulses of the capstan motor, and comparing the stored number of pulses with the number of pulses currently detected. stop Key is made wojim capstan motor position control method for a camcorder which is characterized by the seventh step. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910023318A 1991-12-18 1991-12-18 How to control the capstan motor position of the camcorder KR930015686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910023318A KR930015686A (en) 1991-12-18 1991-12-18 How to control the capstan motor position of the camcorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910023318A KR930015686A (en) 1991-12-18 1991-12-18 How to control the capstan motor position of the camcorder

Publications (1)

Publication Number Publication Date
KR930015686A true KR930015686A (en) 1993-07-24

Family

ID=67356349

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910023318A KR930015686A (en) 1991-12-18 1991-12-18 How to control the capstan motor position of the camcorder

Country Status (1)

Country Link
KR (1) KR930015686A (en)

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