KR940010053A - Noise reduction method during still picture playback - Google Patents

Noise reduction method during still picture playback Download PDF

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Publication number
KR940010053A
KR940010053A KR1019920018415A KR920018415A KR940010053A KR 940010053 A KR940010053 A KR 940010053A KR 1019920018415 A KR1019920018415 A KR 1019920018415A KR 920018415 A KR920018415 A KR 920018415A KR 940010053 A KR940010053 A KR 940010053A
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KR
South Korea
Prior art keywords
mechanical brake
capstan motor
control
control pulse
mode
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Application number
KR1019920018415A
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Korean (ko)
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KR0165248B1 (en
Inventor
성승훈
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윤종용
삼성전자 주식회사
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Priority to KR1019920018415A priority Critical patent/KR0165248B1/en
Publication of KR940010053A publication Critical patent/KR940010053A/en
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Publication of KR0165248B1 publication Critical patent/KR0165248B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Braking Arrangements (AREA)

Abstract

본 발명은 정상재생 모드에서 스틸재생 모드로 전환할 경우 발생되는 잡음을 제거하기 위한 것이다. 이를 위하여 시스콘 마이콤 및 캡스턴모터와 캡스턴모터의 구동과 정지를 제어하기 위한 기계적 제동기를 구비한 자기테이프기록재생장치에 있어서 정지화면 재생시 잡읍제거방법은, 자기테이프기록재생장치에서 수행되고 있는 모드가 정상재생 모드일때, 스틸재생 모드로 이행하기 위한 제어신호가 인가되었는지를 판단하기 위한 제어신호 인가 판단과정과, 제어신호 인가 판단과정에서 스틸재생 모드신호가 인가된 경우 기계적 제동기를 캡스턴모터에 부착시키기 위하여 위치 이동 제어펄스를 발생시키기 위한 위치치이동 제어펄스 발생과정과, 위치 이동 제어펄스 발생과정에서 발생된 위치이동 제어펄스에 의하여 기계적 제동기가 캡스턴모터에 부착되도록 제어하기 위한 기계적 제동기 부착 제어과정과, 기계적 제동기 부착 제어과정을 통해 기계적 제동기가 캡스턴모터에 부착되어 자기테이프기록재생장치의 메카포지션의 위치가 스틸재생 모드로 설정된 순간을 기준으로 콘트롤헤드로부터 픽업된 첫번째 콘트롤 펄스로부터 일정시간 후 캐브턴모터의 제동 펄스를 발생시켜 캡스턴모터가 정지되도록 제어하기 위한 캡스턴모터 정지제어과정을 포함하도록 구성된다. 따라서, 회로에 제동기의 제동시간을 기계적 제동기의 제동시간에 동기시켜서 설정함으로써 회로적 제동기와 기계적 제동기의 비정합으로 인하여 발생하는 잡음을 제거할 수 있는 이점이 있다.The present invention is to remove the noise generated when switching from the normal playback mode to the still playback mode. To this end, in the magnetic tape recording and reproducing apparatus having a siscon micom and a mechanical brake for controlling the driving and stopping of the capstan motor and the capstan motor, the removal method when the still image is reproduced is a mode performed in the magnetic tape recording and reproducing apparatus. Is in the normal regeneration mode, the control signal application judgment process for determining whether the control signal for transition to the still regeneration mode is applied, and if the steel regeneration mode signal is applied during the control signal application determination process, the mechanical brake is attached to the capstan motor The control process for attaching the mechanical brake to control the mechanical brake to be attached to the capstan motor by the position shift control pulse generation process for generating the position shift control pulse and the position shift control pulse generated during the position shift control pulse generation. And, through the control process of mechanical brake attachment The mechanical brake is attached to the capstan motor to generate the braking pulse of the capton motor after a certain time from the first control pulse picked up from the control head based on the moment when the position of the mecha position of the magnetic tape recording and reproducing apparatus is set to the still playback mode. And a capstan motor stop control process for controlling the motor to stop. Therefore, by setting the braking time of the brake in the circuit in synchronization with the braking time of the mechanical brake, there is an advantage in that noise generated due to mismatch between the circuit brake and the mechanical brake can be removed.

Description

정지화면 재생시 잡음제거방법Noise reduction method during still picture playback

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

제1도는 본 발명에 의한 정지화면 재생시 잡음제거방법을 실현하기 위한 장치도,1 is an apparatus for realizing a method for removing noise during still picture reproduction according to the present invention;

제2A∼2E도는 제1도에 도시된 장치도에 대한 동작파형도,2A to 2E are operating waveform diagrams for the apparatus diagram shown in FIG.

제3도는 본 발명에 의한 정지화면 재생시 잡음제거방법의 흐름도.3 is a flowchart of a noise canceling method for reproducing still images according to the present invention.

Claims (2)

시스콘 마이콤(10)및 캡스턴모터(50)와 상기 캡스턴모터(50)의 구동과 정지를 제어하기 위한 기계적 제동기(60)를 구비한 자기테이프기록재생장치의 정지화면 재생시 잡음제거 방법에 있어서, 상기 자기테이프기록재생장치에서 수행되고 있는 모드가 정상재생 모드일때, 스틸재생 모드로 이행하기 위한 제어신호가 인가되었는지를 판단하기 위한 제어신호 인가 판단과정; 상기 제어신호 인가 판단과정에서 스틸재생 모드신호가 인가된 경우 상기 기계적 제동기(60)를 상기 캡스턴모터(50)에 부착시키기 위하여 위치 이동 제어펄스를 발생시키기 위한 위치 이동 제어펄스 발생과정; 상기 위치이동 제어펄스 발생과정에서 발생된 위치이동 제어펄스에 의하여 상기 기계적 제동기(60)가 상기 캡스턴모터(50)에 부착되도록 제어하기 위한 기계적 제동기 부착 제어과정; 상기 기계적 제동기 부착 제어과정을 통해 상기 기계적 제동기(60)가 상기 캡스턴모터(50)에 부착되어 상기 자기테이프기록재생장치의 메카포지션의 위치가 스틸재생 모드로 설정된 순간을 기준으로 콘트롤헤드(70)로부터 픽업된 첫번째 콘트롤 펄스로부터 일정시간 후 상기 캡스턴모터(50)의 제동 펄스를 발생시켜 상기 캡스턴모터(50)가 정지되도록 제어하기 위한 캡스턴모터 정지 제어과정을 포함함을 특징으로 하는 정지화면 재생시 잡음제거방법.In the noise reduction method of reproducing the still image of the magnetic tape recording and reproducing apparatus provided with the siscon micom (10), the capstan motor (50) and the mechanical brake (60) for controlling the driving and stopping of the capstan motor (50). A control signal application determining process for determining whether a control signal for transitioning to the still playback mode has been applied when the mode being performed in the magnetic tape recording / playback apparatus is a normal playback mode; A position movement control pulse generation process for generating a position movement control pulse for attaching the mechanical brake 60 to the capstan motor 50 when a steel regeneration mode signal is applied in the control signal application determination process; A mechanical brake attachment control process for controlling the mechanical brake 60 to be attached to the capstan motor 50 by the position movement control pulse generated during the position movement control pulse generation; Through the mechanical brake attachment control process, the mechanical brake 60 is attached to the capstan motor 50 so that the control head 70 is positioned on the basis of the moment when the position of the mecha position of the magnetic tape recording and reproducing apparatus is set to the still reproduction mode. Capstan motor stop control process for controlling the capstan motor 50 to be stopped by generating a braking pulse of the capstan motor 50 after a predetermined time from the first control pulse picked up from the Noise reduction method. 제1항에 있어서, 상기 기계적 제동기 부착 제어과정은 상기 위치이동 제어펄스에 의한 기계적 제동기(60)의 이동상태에 따른 상기 메카포지션에 의하여 상기 캡스턴모터(50)와 상기 기계적 제동기(60)간의 부착상태를 체크하는 과정을 더 포함함을 특징으로 하는 정지화면 재생시 잡음제거방법.According to claim 1, wherein the mechanical brake attachment control process is attached between the capstan motor 50 and the mechanical brake 60 by the mechanism position according to the movement state of the mechanical brake 60 by the position movement control pulse. Noise reduction method for reproducing the still picture, characterized in that it further comprises the step of checking the status. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920018415A 1992-10-07 1992-10-07 Method for removing noise on reproducing pause screen KR0165248B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920018415A KR0165248B1 (en) 1992-10-07 1992-10-07 Method for removing noise on reproducing pause screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920018415A KR0165248B1 (en) 1992-10-07 1992-10-07 Method for removing noise on reproducing pause screen

Publications (2)

Publication Number Publication Date
KR940010053A true KR940010053A (en) 1994-05-24
KR0165248B1 KR0165248B1 (en) 1999-03-20

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Application Number Title Priority Date Filing Date
KR1019920018415A KR0165248B1 (en) 1992-10-07 1992-10-07 Method for removing noise on reproducing pause screen

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KR0165248B1 (en) 1999-03-20

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