KR910021112A - CRT controller with external synchronization circuit - Google Patents

CRT controller with external synchronization circuit Download PDF

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Publication number
KR910021112A
KR910021112A KR1019900007463A KR900007463A KR910021112A KR 910021112 A KR910021112 A KR 910021112A KR 1019900007463 A KR1019900007463 A KR 1019900007463A KR 900007463 A KR900007463 A KR 900007463A KR 910021112 A KR910021112 A KR 910021112A
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KR
South Korea
Prior art keywords
external
signal
synchronous
synchronization
mode determination
Prior art date
Application number
KR1019900007463A
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Korean (ko)
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KR920008905B1 (en
Inventor
배광석
Original Assignee
강진구
삼성전자 주식회사
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
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019900007463A priority Critical patent/KR920008905B1/en
Publication of KR910021112A publication Critical patent/KR910021112A/en
Application granted granted Critical
Publication of KR920008905B1 publication Critical patent/KR920008905B1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

내용 없음No content

Description

외부동기 회로를 부가한 CRT 콘트롤러CRT controller with external synchronization circuit

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

제1도는 본 발명에 따른 블럭도.1 is a block diagram according to the present invention.

제2도는 본 발명에 따른 일실시예의 회로도.2 is a circuit diagram of one embodiment according to the present invention.

Claims (2)

외부동기 회로를 구비한 CRT콘트롤러에 있어서, 외부동기신호(12)를 입력으로 하여 상기 외부 동기신호(12)의 발생여부를 판별하는 외부동기 검출부(20)와, 상기 외부동기 검출기(20)의 출력신호(21)를 하나의 입력으로 하고 내부 또는 외부동기 선택단자(31)와 검출활성화 선택단자(32)로 각각 인가되는 신호를 다른 입력으로 하여 CRT콘트롤러가 어떤 동기에 의해 동작될 것인가를 결정하는 모드결정부(30)와, 상기 모드결정부(30)의 출력인 모드결정 신호(33)를 선택한 입력(33)으로 하고 내부 동기신호(11) 및 상기 외부 동기 신호(1)를 입력으로 하여 출력동기신호(13)를 발생하는 동기 멀티플렉서(10)로 구성됨을 특징으로 하는 외부동기 회로를 구비한 CRT콘트롤러.In a CRT controller having an external synchronous circuit, an external synchronous detection unit (20) for determining whether the external synchronous signal (12) is generated by inputting an external synchronous signal (12) and the external synchronous detector (20) The output signal 21 is used as one input, and the signals applied to the internal or external synchronization selection terminal 31 and the detection activation selection terminal 32 are respectively different inputs to determine which synchronization the CRT controller is operated by. A mode determination section 30 and a mode determination signal 33 that is an output of the mode determination section 30 are selected inputs 33, and an internal synchronization signal 11 and an external synchronization signal 1 are input. And a synchronous multiplexer (10) for generating an output synchronous signal (13). 외부동기 회로를 구비한 CRT콘트롤러에 있어서, 외부동기신호(12)를 입력으로 하여 상기 외부 동기신호(12)의 발생여부를 판별하는 외부 동기검출 원 셔트 멀티바이브레이트(50)와, 상기 외부 동기검출 원 셔트 멀티바이브레이터(50)의 출력신호(21)를 하나의 입력으로 하고 내부 또는 외부동기 선택단자(31)와 검출활성화 선택단자(32)로 각각 인가되는 신호를 다른 입력으로 하여 CRT콘트롤러가 어떤 동기에 의해 동작될 것인가를 결정하는 모드결정 멀티플렉서(60)와, 상기 모드결정 멀티플렉서(60)의 출력인 모드결정 신호(33)를 선택단자 입력(33)으로 하고 내부 동기신호(11) 및 상기 외부 동기신호(12)를 입력으로 하여 출력동기신호(13)를 발생하는 동기 멀티플렉서(40)로 구성됨을 특징으로 하는 외부동기 회로를 구비한 CRT콘트롤러.In a CRT controller having an external synchronizing circuit, an external synchronizing detection one-shuttle multivibration 50 for determining whether the external synchronizing signal 12 is generated by inputting an external synchronizing signal 12 and the external synchronizing; The CRT controller uses the output signal 21 of the detection one-shuttle multivibrator 50 as one input and the signals applied to the internal or external synchronization selection terminal 31 and the detection activation selection terminal 32 as different inputs. A mode determination multiplexer 60 for determining which synchronization is to be operated and a mode determination signal 33 which is an output of the mode determination multiplexer 60 are selected terminal inputs 33, and an internal synchronization signal 11 and And a synchronous multiplexer (40) for generating an output synchronous signal (13) by inputting the external synchronous signal (12). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900007463A 1990-05-23 1990-05-23 Crt controller KR920008905B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900007463A KR920008905B1 (en) 1990-05-23 1990-05-23 Crt controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900007463A KR920008905B1 (en) 1990-05-23 1990-05-23 Crt controller

Publications (2)

Publication Number Publication Date
KR910021112A true KR910021112A (en) 1991-12-20
KR920008905B1 KR920008905B1 (en) 1992-10-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900007463A KR920008905B1 (en) 1990-05-23 1990-05-23 Crt controller

Country Status (1)

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KR (1) KR920008905B1 (en)

Also Published As

Publication number Publication date
KR920008905B1 (en) 1992-10-10

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