KR960032303A - Method and circuit of still image control - Google Patents

Method and circuit of still image control Download PDF

Info

Publication number
KR960032303A
KR960032303A KR1019950001848A KR19950001848A KR960032303A KR 960032303 A KR960032303 A KR 960032303A KR 1019950001848 A KR1019950001848 A KR 1019950001848A KR 19950001848 A KR19950001848 A KR 19950001848A KR 960032303 A KR960032303 A KR 960032303A
Authority
KR
South Korea
Prior art keywords
capstan motor
unit
detecting
output
load
Prior art date
Application number
KR1019950001848A
Other languages
Korean (ko)
Inventor
목동균
Original Assignee
구자흥
Lg 전자주식회사
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 구자흥, Lg 전자주식회사 filed Critical 구자흥
Priority to KR1019950001848A priority Critical patent/KR960032303A/en
Priority to JP7314235A priority patent/JPH08237981A/en
Priority to US08/566,285 priority patent/US5942868A/en
Publication of KR960032303A publication Critical patent/KR960032303A/en

Links

Abstract

본 발명은 캡스턴모터 부하량 감지형 최적 정지화상 장치에 관한 것으로, 일반적인 브이씨알에 있어서는 정지화상 구현시 재생중 캡스턴모터에 가해지는 부하량에 따라 실제 캡스턴모터 브레이크 위치가 다른 이런 이유로 인하여 정지화상 실현시 비디오헤드와 테이프내에 있는 비디오트랙과의 위상차가 생겨 화면상에 노이즈-바 위치가 랜덤할 수 밖에 없고, 이로 인하여 최적의 정지화상을 제공할 수 없게 되는 결합이 있었는 바, 본 발명은 이를 해결하기 위하여 비디오헤드와 비디오트랙간의 위상관계 뿐만 아니라 사용자의 실제 사용조건인 테이프의 시간차이, 테이프의 초기, 중기, 말기차이, 메카니즘에 따른 테이프의 주행부하 차이, 메카니즘과 테이프에 가해지는 환경차이에 따라 캡스턴모터에 가해지는 부하량을 고려하여 캡스턴모터의 구동을 제어함으로써 보다 선명한 정지화면을 제공할 수 있도록 한 것이다.The present invention relates to a capstan motor load-sensing optimum still image device, and in general VR, the actual capstan motor brake position is different depending on the load applied to the capstan motor during playback during the still image, and thus the video when the still image is realized Since there is a phase difference between the head and the video track in the tape, the noise-bar position is random on the screen, and thus, there is a combination that cannot provide an optimal still image. In addition to the phase relationship between the video head and the video track, the capstan depends on the user's actual usage conditions, the tape's initial, middle, and late stages, the difference in the tape's running load according to the mechanism, and the environmental and environmental differences on the tape. Capstan motor drive considering load on motor By controlling this, it is possible to provide a clearer still image.

Description

브이씨알의 정지화상 제어 방법 및 회로Method and circuit of still image control

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

제4도는 본 발명의 부하량 검출방법을 설명하기 위한 펄스폭변조제어신호 파형도4 is a waveform diagram of a pulse width modulation control signal for explaining the load detection method of the present invention.

제5도는 본 발명의 부하량 검출방법을 설명하기 위한 펄스폭변조제어신호의 평균값 산출 설명도5 is an explanatory diagram for calculating an average value of a pulse width modulation control signal for explaining the load detection method of the present invention.

제9도는 본 발명 브이씨알의 정지화상 제어방법에 대한 신호 흐름도9 is a signal flow diagram for a still image control method of the VR of the present invention

제10도는 본 발명 브이씨알의 정지화상 제어회로에 대한 다른 예시블록도10 is another exemplary block diagram of the still picture control circuit of the VR of the present invention.

Claims (3)

재생모드에서 캡스턴모터의 부하량을 검출하여 그의 평균값(K)을 산출한 후 그 평균값(K)을 부하량의 대소판별 기준값(a1,a2,…,an)과 비교판정하는 제1과정과, 상기 제1과정과 병행하여 캡스턴모터의 위상을 검출하는 제2과정과, 스틸키이신호가 입력되면 상기 제1과정에서 판정된 부하량에 상응되는 캡스턴모터 구동출력을 발생하고, 제2과정에서 검출된 위상에 상응되는 스틸액션을 취하는 제3과정으로 이루어지는 것을 특징으로 하는 브이씨알의 정지화상 제어 방법.A first step of detecting the load of the capstan motor in the regeneration mode, calculating the average value K thereof, and comparing the average value K with the reference value (a 1 , a 2 ,..., An) of the load amount; The second process of detecting the phase of the capstan motor in parallel with the first process, and when the steel key signal is input, generates a capstan motor drive output corresponding to the load amount determined in the first process, and detected in the second process And a third step of taking a still action corresponding to the phase. 펄스폭변조제어신호 출력부(18B), 저역필터(11), 모터구동부(12)를 통해 캡스턴모터(13)에 구동펄스를 출력하고, 속도검출부(14) 및 위상검출부(17)를 통해 그 캡스턴모터(13)의 위상을 검출하고 캡스턴모터 제어 루프계에 있어서, 재생모드에서 상기 펄스폭변조제어신호 출력부(18B)의 출력신호를 스캔하여 캡스턴모터의 부하량을 검출하는 캡스턴모터부하량 검출부(18C)와, 상기 캡스턴모터부하량 검출부(18C)에서 출력되는 부하량의 평균값(K)을 산출한 후 그 평균값(K)을 부하량의 대소판별 기준값과 비교판정하여 그에 따른 제어신호를 상기 펄스폭변조제어신호 출력부(18B)측으로 출력하는 캡스턴모터 제어부(18A)를 포함하여 구성한 것을 특징으로 하는 브이씨알의 정지화상 제어 회로.The pulse width modulation control signal output unit 18B, the low pass filter 11, and the motor driving unit 12 output the driving pulses to the capstan motor 13, and through the speed detecting unit 14 and the phase detecting unit 17, A capstan motor load detection unit for detecting the phase of the capstan motor 13 and detecting the load of the capstan motor by scanning the output signal of the pulse width modulation control signal output unit 18B in the regeneration mode in the capstan motor control loop system. 18C) and an average value K of the loads output from the capstan motor load detection unit 18C, are calculated, and the average value K is compared with the reference value for large and small discrimination of the loads, and the corresponding control signal is converted into the pulse width modulation control. And a capstan motor control unit (18A) output to the signal output unit (18B) side. 펄스폭변조제어신호 출력부(18B), 저역필터(11), 모터구동부(12)를 통해 캡스턴모터(13)에 구동펄스를 출력하고, 속도검출부(14) 및 위상검출부(17)를 통해 그 캡스턴모터(13)의 위상을 검출하고 캡스턴모터 제어 루프계에 있어서, 재생모드에서 상기 캡스턴모터(13)의 출력전압을 검출하는 캡스턴모터부하량 검출부(20)와,상기 캡스턴모터부하량 검출부(20)에서 출력되는 부하량의 평균값(K)을 산출한 후 그 평균값(K)을 부하량의 대소판별 기준값과 비교판정하여 그에 따른 제어신호를 상기 펄스폭변조제어신호 출력부(18B)측으로 출력하는 캡스턴모터 제어부(18A)를 포함하여 구성한 것을 특징으로 하는 브이씨알의 정지화상 제어 회로.The pulse width modulation control signal output unit 18B, the low pass filter 11, and the motor driving unit 12 output the driving pulses to the capstan motor 13, and through the speed detecting unit 14 and the phase detecting unit 17, Capstan motor load detection unit 20 for detecting the phase of the capstan motor 13 and detecting the output voltage of the capstan motor 13 in the regeneration mode in the capstan motor control loop system, and the capstan motor load detection unit 20 Capstan motor control unit for calculating the average value (K) of the load amount output from the control unit and compares the average value (K) with the large and small reference value of the load amount, and outputs the control signal according to the pulse width modulation control signal output unit (18B) A static picture control circuit for V-C, comprising (18A). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950001848A 1994-12-02 1995-02-02 Method and circuit of still image control KR960032303A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019950001848A KR960032303A (en) 1995-02-02 1995-02-02 Method and circuit of still image control
JP7314235A JPH08237981A (en) 1994-12-02 1995-12-01 Control device for speed and phase of motor
US08/566,285 US5942868A (en) 1994-12-02 1995-12-01 Speed and phase controller for motor and video cassette recorder having same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950001848A KR960032303A (en) 1995-02-02 1995-02-02 Method and circuit of still image control

Publications (1)

Publication Number Publication Date
KR960032303A true KR960032303A (en) 1996-09-17

Family

ID=66531124

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950001848A KR960032303A (en) 1994-12-02 1995-02-02 Method and circuit of still image control

Country Status (1)

Country Link
KR (1) KR960032303A (en)

Similar Documents

Publication Publication Date Title
KR960032303A (en) Method and circuit of still image control
EP0578475B1 (en) Motor control apparatus
KR920001466A (en) How to control speed and phase of capstan motor
KR960002159A (en) Head tracking control method for double speed regeneration and its device
KR0164712B1 (en) Method of varying the speed of capstan by absolute position of a video
JP2632077B2 (en) Brake control device at high speed running
KR970057683A (en) Tape running speed detection circuit and method of image signal processing device
KR940004576A (en) Method and apparatus for determining method of signal recorded on videotape
KR970050567A (en) Deck Driving Device and Method Using Back EMF of Motor
KR940020378A (en) Recording signal discrimination circuit of recording and reproducing apparatus
KR100218420B1 (en) Method of controlling static screen in a vcr
KR970029596A (en) Tape winding speed control device of video cassette recorder
JPH08237981A (en) Control device for speed and phase of motor
KR970017298A (en) How to determine recording speed according to scheduled recording time
KR940016220A (en) Tracking control method and device of VCR
KR980004560A (en) Auto-tracking method for still / slow playback on a video cassette recorder
KR19980084503A (en) How to adjust V brake slow brake automatically
KR970017325A (en) How to detect tape position at low speed
KR960015480A (en) Method and device for automatic control of low speed mode
KR19980029879A (en) Tape high speed driving method to prevent V damage of tape
KR890008783A (en) Rotational Speed Control Method of Capstan Motor Using Reel Pulse Signal
KR970022968A (en) How to Track a Video Cassette Recorder
KR970050568A (en) Tape advance compensation device and method in section repeating operation of cassette player
KR940020339A (en) Tracking control method and device
KR960025570A (en) Screen stabilization circuit and its method when switching playback speed

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination