KR970024898A - Monitor operation control device and control method in mode switching - Google Patents

Monitor operation control device and control method in mode switching Download PDF

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Publication number
KR970024898A
KR970024898A KR1019950038545A KR19950038545A KR970024898A KR 970024898 A KR970024898 A KR 970024898A KR 1019950038545 A KR1019950038545 A KR 1019950038545A KR 19950038545 A KR19950038545 A KR 19950038545A KR 970024898 A KR970024898 A KR 970024898A
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KR
South Korea
Prior art keywords
horizontal synchronizing
synchronizing signal
mode
mode switching
crt
Prior art date
Application number
KR1019950038545A
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Korean (ko)
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KR0174908B1 (en
Inventor
임재섭
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950038545A priority Critical patent/KR0174908B1/en
Publication of KR970024898A publication Critical patent/KR970024898A/en
Application granted granted Critical
Publication of KR0174908B1 publication Critical patent/KR0174908B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning 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
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

본 발명은 모드 전환시 모니터 동작 제어장치 및 제어방법에 관한 것으로서, 종래에는 기존에 수행중인 모드의 동기신호가 인가되는 중에 퍼스날 컴퓨터의 모드를 새로운 모드로 전환하는 경우 모드 전환이 이루어지는 초기에 새로운 모드를 인식하지 못하고 일정시간 동안의 시간지연을 가진 후 동기신호를 기초로 새로운 모드를 인식하므로 모니터의 플라이 백 트랜스를 비롯한 각종 구성들이 마이크로 프로세서가 새로운 모드의 동기신호를 인식하여 후단의 동작을 제어하기까지 지연된 시간동안 마이크로 프로세서가 두 개의 모드로 후단을 제어하기 때문에 모니터의 동작이 불안정하므로, 본 발명은 퍼스날 컴퓨터의 모드가 전환될 때 모니터의 CRT상에 가해지는 고압의 발생을 소정시간 동안 차단하므로서, 모드 전환시 CRT를 비롯한 모니터의 소자들이 망실되는 것을 방지한다.The present invention relates to a control device and a control method for the monitor operation during mode switching, and in the related art, when the mode of the personal computer is switched to a new mode while the synchronization signal of the existing mode is being applied, the new mode is initially performed. After recognizing the new mode based on the synchronous signal after having a time delay for a certain time, the microprocessor recognizes the new mode synchronous signal and controls the operation of the rear stage. Since the operation of the monitor is unstable because the microprocessor controls the rear end in two modes for a delayed time until the present invention, the present invention blocks the generation of high pressure applied to the CRT of the monitor for a predetermined time when the mode of the personal computer is switched. Of the monitor, including the CRT, To prevent their being LOST.

Description

모드 전환시 모니터 동작 제어장치 및 제어방법Monitor operation control device and control method in mode switching

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

제1도는 본발명을 실현하기 위한 회로도,1 is a circuit diagram for realizing the present invention,

제2도는 본발명의 동작을 제어하는 마이크로 콘트롤러 유니트의 동작 상태를 도시한 흐름도.2 is a flowchart showing an operating state of the microcontroller unit for controlling the operation of the present invention.

Claims (2)

모드(Mode)에 따라 일정한 극성을 갖는 수평 동기신호(Hsync)를 입력하는 수평 동기신호 입력부와 ; 상기 수평 동기신호 입력부의 수평 동기신호(Hsync)의 레벨을 승압하여 출력하는 수평 동기신호 출력부와 ; 상기 승압된 수평 동기신호(Hsync)에 의해 CRT상에 고압의 전압을 공급하는 플라이 백 트랜스를 포함하여 구성된 것에 있어서, 상기 플라이 백 트랜스의 플라이 백 펄스(FBP)의 극성을 전환하는 극성 전환부와 ; 상기 극성 전환부의 플라이 백 펄스(FBP)와 수평 동기신호 입력부의 수평 동기신호(Hsync)를 조합하는 엔드 게이트와 ; 상기 엔드 게이트의 출력 레벨에 따라 모드(Mode) 절환상태를 판단하고 모드(Mode) 절환시 수평 동기신호 출력부의 동작을 차단하는 마이크로 콘트롤러 유니트로 구성되어짐을 특징으로하는 모드 전환시 모니터 동작 제어 장치.A horizontal synchronizing signal input unit for inputting a horizontal synchronizing signal Hsync having a constant polarity according to a mode; A horizontal synchronizing signal output unit for boosting and outputting a level of the horizontal synchronizing signal Hsync of the horizontal synchronizing signal input unit; A flyback transformer configured to supply a high voltage to the CRT by the boosted horizontal synchronizing signal (Hsync), the polarity switching unit for switching the polarity of the flyback pulse (FBP) of the flyback transformer; ; An end gate combining the fly back pulse FBP of the polarity switching unit and the horizontal synchronizing signal Hsync of the horizontal synchronizing signal input unit; And a micro controller unit which determines a mode switching state according to the output level of the end gate and blocks the operation of the horizontal synchronizing signal output unit during mode switching. 퍼스날 컴퓨터로부터 전송되는 동기신호에 의해 데이터신호를 처리하여 CRT상에 디스플레이 함에 있어서, 수평 동기신호(Hsync)와 반전된 플라이 백 펄스(FBP)를 대비하여 모드전환을 판정하여 모드 전환시에는 소정 시간동안 CRT상에 출력되는 고압의 발생을 차단하고, 모드가 전환되지 않았을 때에는 정상적인 동작을 수행하도록 함을 특징으로 하는 모드전환시 모니터 동작 제어방법.When the data signal is processed and displayed on the CRT by the synchronization signal transmitted from the personal computer, the mode switching is determined by comparing the horizontal synchronization signal Hsync with the inverted flyback pulse FBP. The method for controlling the operation of the monitor during mode switching characterized in that the high voltage outputted on the CRT is cut off while the normal operation is performed when the mode is not switched. ※ 참고사항 ; 최초출원 내용에 의하여 공개하는 것임.※ Note ; Disclosure based on original application.
KR1019950038545A 1995-10-31 1995-10-31 Appaaratus and method for controlling monitor in changing mode KR0174908B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950038545A KR0174908B1 (en) 1995-10-31 1995-10-31 Appaaratus and method for controlling monitor in changing mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950038545A KR0174908B1 (en) 1995-10-31 1995-10-31 Appaaratus and method for controlling monitor in changing mode

Publications (2)

Publication Number Publication Date
KR970024898A true KR970024898A (en) 1997-05-30
KR0174908B1 KR0174908B1 (en) 1999-03-20

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KR1019950038545A KR0174908B1 (en) 1995-10-31 1995-10-31 Appaaratus and method for controlling monitor in changing mode

Country Status (1)

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Publication number Publication date
KR0174908B1 (en) 1999-03-20

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