KR930015686A - How to control the capstan motor position of the camcorder - Google Patents
How to control the capstan motor position of the camcorder Download PDFInfo
- 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
Links
Classifications
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- 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
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- 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
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- 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
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- 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
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)
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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1991
- 1991-12-18 KR KR1019910023318A patent/KR930015686A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
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WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |