KR910006963A - Method and device for preventing power noise of screen during loading and unloading - Google Patents

Method and device for preventing power noise of screen during loading and unloading Download PDF

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Publication number
KR910006963A
KR910006963A KR1019890013251A KR890013251A KR910006963A KR 910006963 A KR910006963 A KR 910006963A KR 1019890013251 A KR1019890013251 A KR 1019890013251A KR 890013251 A KR890013251 A KR 890013251A KR 910006963 A KR910006963 A KR 910006963A
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KR
South Korea
Prior art keywords
loading
circuit
output
voltage
signal
Prior art date
Application number
KR1019890013251A
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Korean (ko)
Inventor
정관희
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
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Priority to KR1019890013251A priority Critical patent/KR910006963A/en
Publication of KR910006963A publication Critical patent/KR910006963A/en

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Abstract

내용 없음No content

Description

로딩, 언로딩시 화면의 전원노이즈 방지 방법 및 장치Method and device for preventing power noise of screen during loading and unloading

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

제2도는 본 발명에 따른 로딩, 언로딩시 화면의 전원 노이즈 방지 장치 회로도.2 is a circuit diagram of a power supply noise preventing device of a screen during loading and unloading according to the present invention.

제3도는 본 발명에 따른 동작 파형도.3 is an operational waveform diagram according to the present invention.

제4도는 본 발명에 따른 플로우 챠트도.4 is a flow chart in accordance with the present invention.

Claims (2)

로딩(+) 또는 (-)출력을 요하는 모드인지 체크해서 로딩(+) 또는 (-)출력을 요하는 모드이면 스위치회로에서 로딩(+) 또는 (-)신호보다 일정시간(X 타임) 먼저 '하이'를 출력하는 단계와, 상기 단계후 스위치회로가 계속 '하이'를 출력하는 상태에서 로딩(+) 또는 (-)신호가 일정시간 동안 '하이'를 출력하는 단계와, 상기 단계후 스위치회로의 출력신호는 '로우'로 되고 로딩(+) 또는 (-)신호를 일정시간 동안 (Z 타임동안)을 '하이'를 출력하는 단계와, 상기 단계후 스위치회로의 출력이 '로우'인 상태에서 로딩(+) 또는 (-)신호출력이 '로우'로 된뒤 VCR 노말 모드를 실행하는 단계를 거쳐 로딩, 언로딩시에 튜너로 수신할때 화면의 전원노이즈를 방지하는 것을 특징으로 하는 로딩, 언로딩시 화면의 전원 노이즈 방지방법.Checks whether the mode requires loading (+) or (-) output. If the mode requires loading (+) or (-) output, the switch circuit provides a certain time (X time) before the loading (+) or (-) signal. Outputting a 'high'; outputting a 'high' for a predetermined time by a loading (+) or (-) signal while the switch circuit continuously outputs a 'high' after the step; The output signal of the circuit is 'low' and the loading (+) or (-) signal is output 'high' for a predetermined time (for Z time), and after the step the output of the switch circuit is 'low' The loading (+) or (-) signal output becomes 'low' in the state, and then performs the VCR normal mode to perform loading and unloading. How to prevent power noise of the screen when unloading. 파워 트랜스(T1) 2차측에 정류회로(BD)를 거쳐 연결되어 로딩모터 전원전압을 출력하는 정전압회로(1)와, 상기 파워 트랜스(T1) 2차측에 정류회로(BD)를 거쳐 연결되어 튜너/IF 전원전압을 출력하는 정전압 회로(2)와, 상기 파워 트랜스(T1) 2차측에 다이오드(D1)를 거쳐 연결되며 그 출력이 튜닝 전압이 되는 동시에 트랜지스터(Q1)의 에미터로 연결되는 정전압 회로(3)와, 트랜지스터(Q1, Q2)로 구성되어 마이콤부(6)에 의해 제어되어 로딩(+) 또는 (-)신호가 출력되기 이전 먼저 '온'되어 정전압회로(3)의 전압을 정전압회로(4)로 인가하는 스위치회로(5)와, 상기 스위칭회로(5)동작시 튜너/IF 전원전압을 출력하는 정전압회로(4)와, 상기 스위치 회로(5)를 제어하는 마이콤부(6)와, 시스템 콘트롤단의 로딩(+) 또는 (-)전압이 안정될때 '온'되어 스위치 회로(5)의 입력을 차단하는 트랜지스터(Q3)를 포함하여 구성된 것으로 특징으로 하는 로딩, 언로딩시 화면의 전원노이즈 방지장치.A constant voltage circuit (1) connected to the secondary side of the power transformer (T 1 ) via a rectifying circuit (BD) and outputting a loading motor power supply voltage, and connected to the secondary side of the power transformer (T 1 ) through a rectifying circuit (BD) the emitter of the constant voltage circuit (2) and said power transformer (T 1) connected through a diode (D 1) to the secondary side, and the output is tuned at the same time that voltage transistor (Q 1) to the tuner / IF output the power supply voltage Is composed of a constant voltage circuit (3) connected to the circuit board and transistors (Q 1 , Q 2 ) and controlled by the microcomputer (6) so that the voltage is first turned on before the loading (+) or (-) signal is output. A switch circuit 5 for applying the voltage of the circuit 3 to the constant voltage circuit 4, a constant voltage circuit 4 for outputting a tuner / IF power supply voltage during the operation of the switching circuit 5, and the switch circuit 5 The microcomputer 6 controlling the control panel and the input of the switch circuit 5 are turned on when the loading (+) or (-) voltage of the system control stage is stabilized. Loading and unloading prevent power supply noise of the loading device, characterized in that when the screen is configured by a transistor (Q 3) to block. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890013251A 1989-09-12 1989-09-12 Method and device for preventing power noise of screen during loading and unloading KR910006963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890013251A KR910006963A (en) 1989-09-12 1989-09-12 Method and device for preventing power noise of screen during loading and unloading

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890013251A KR910006963A (en) 1989-09-12 1989-09-12 Method and device for preventing power noise of screen during loading and unloading

Publications (1)

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KR910006963A true KR910006963A (en) 1991-04-30

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Application Number Title Priority Date Filing Date
KR1019890013251A KR910006963A (en) 1989-09-12 1989-09-12 Method and device for preventing power noise of screen during loading and unloading

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100467301B1 (en) * 2002-08-23 2005-01-24 김기원 Fossil fuels activation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100467301B1 (en) * 2002-08-23 2005-01-24 김기원 Fossil fuels activation system

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