KR940011958A - Fault self-diagnosis circuit in all-optical display device - Google Patents

Fault self-diagnosis circuit in all-optical display device Download PDF

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Publication number
KR940011958A
KR940011958A KR1019920020773A KR920020773A KR940011958A KR 940011958 A KR940011958 A KR 940011958A KR 1019920020773 A KR1019920020773 A KR 1019920020773A KR 920020773 A KR920020773 A KR 920020773A KR 940011958 A KR940011958 A KR 940011958A
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South Korea
Prior art keywords
display device
diagnosis circuit
display
self
input
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KR1019920020773A
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Korean (ko)
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KR950006578B1 (en
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이재환
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이재환
삼익전자공업 주식회사
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

본 발명은 전광표시 장치에서 고장 자체진단회로에 관한 것으로 좀더 상세하게는 표시소자의 오동작이나 고장 여부를 용이하게 판별하는데 적합하도록 한 것이다.The present invention relates to a fault self-diagnosis circuit in an all-optical display device, and more particularly, to be suitable for easily determining a malfunction or a failure of a display element.

종래의 기술은 표출기능만이 부가되어 있는 드라이브나 표시소자의 불량발생으로 인한 오동작이 발생할 경우 자체진단 기능이 없기 때문에 표시판의 표출상태를 눈으로 직접 보고 확인하지 않으면 고장확인이 불가능하여 고장상태를 장시간 방지하게 되었고, 고장수리를 행할때에도 고장부위를 시각적으로 정확히 인식하기가 어렵기 때문에 유지보수가 곤란하며 많은 시간이 소요되는 문제점들이 있었다.The conventional technology does not have a self-diagnosis function when a malfunction occurs due to a failure of a drive or a display element to which only the display function is added. Therefore, if the display state of the display panel is not seen and checked directly, it is impossible to check the fault state. It was prevented for a long time, and even when performing a repair, it is difficult to visually recognize the fault accurately, so that the maintenance is difficult and takes a lot of time.

따라서 본 발명은 전광표시 장치로 흐르는 전류치를 검출하여 마이크로 컴퓨터 제어방식으로 비교 판단하므로써 표시소자의 고장여부를 개별, 그룹 혹은 전체적으로 용이하게 진단가능하게 한 전광표시 장치에서의 고장 자체 진단회로를 구성하였다.Accordingly, the present invention constitutes a failure self-diagnosis circuit in an all-optical display device which makes it possible to easily and individually diagnose the failure of the display elements by detecting and comparing the current value flowing through the all-optical display device by a microcomputer control method. .

Description

전광표시 장치에서의 고장 자체 진단회로Fault self-diagnosis circuit in all-optical display device

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

제1도는 본 발명에 의한 고장 자체 진단회로 블럭구성도,1 is a block diagram of a fault diagnosis circuit according to the present invention;

제2도는 제1도의 레벨변환부의 실시예를 나타낸 상세회로도,FIG. 2 is a detailed circuit diagram showing an embodiment of the level converter of FIG.

제3도는 제1도의 A/D 변환부 및 진단제어부의 실시예를 나타낸 상세회로도.FIG. 3 is a detailed circuit diagram showing an embodiment of the A / D converter and the diagnostic controller of FIG.

Claims (5)

매트릭스료 구성된 전광표시장치의 고장진단 회로에 있어서, 기 설치된 표시소자의 전원 공급라인에서 도선에 흐르는 전류량을 검출하는 전류검출 수단과. 상기 검출신호가 개별표시소자로부터 전체표시소자 범위까지 한정 가능하도록 보정하고 증폭하는 레벨변환 수단과, 상기 보정증폭된 아날로그 신호를 디지탈 신호로 변환하여 마이크로 컴퓨터가 해독하기 쉽도록 CPU 버스로 전송하는 A/D 변환 수단과, 기존의 주표시 콘트롤러로부터 고장진단 명령이나 방법을 받아들여 A/D 변환 수단 및 데이타 선택 수단을 제어하면서 상기에서 디지탈로 변환된 검출신호를 해독하여 연산처리하여 고장진단 기능을 수행하도록 처리하여 주는 진단제어 수단과, 고장진단을 수행하기 위한 상기 진단제어 수단의 테스트 패턴은 표출할 것인지 또는 디스플레이 콘트롤 라인 주표시 제어시스템으로 부터 송출되는 정상정보를 표출할 것인지 여부를 선택하는 데이타 선택수단을 구비함을 특징으로 하는 전광표시 장치에서의 고장 자체 진단회로.A fault diagnosis circuit for an all-optical display device constituted by a matrix material, comprising: current detecting means for detecting an amount of current flowing in a conductive line in a power supply line of a pre-installed display element; Level converting means for correcting and amplifying the detection signal from the individual display element to the entire display element range, and A for converting the corrected amplified analog signal into a digital signal and transferring the same to a CPU bus for easy microcomputer decoding. / D conversion means and the A / D conversion means and data selection means are received from the existing main display controller and the A / D conversion means and data selection means are decoded and arithmetic processed to perform the troubleshooting function. Data for selecting whether to display the diagnostic control means for processing to perform, and the test pattern of the diagnostic control means for performing the fault diagnosis or to display normal information sent from the main display control system of the display control line. In the all-optical display device characterized in that it comprises a selection means Fault self-diagnosis circuit. 제1항에 있어서, 상기 레벨변환 수단은 입력오차를 줄이기 위한 입력바이어스 전류보상용 저항(R3)과, 전체표시소자가 점등된 상태에서 A/D 변환기의 입력단 최대 범위까지 보정하여 중폭하도록 조정가능한 가변저항(VR1) 및 저항(R1) (R4)과, 오퍼앰프를 사용한 비반전 연산증폭기 (12A)로 구성된 것을 특징으로 하는 전광표시 장치에서의 고장 자체 진단회로.The control device according to claim 1, wherein the level converting means adjusts the input bias current compensation resistor (R 3 ) to reduce the input error and corrects the input range of the A / D converter to the maximum range while the entire display device is turned on. A fault self-diagnosis circuit in an all-optical display device comprising a variable resistor (VR 1 ) and a resistor (R 1 ) (R 4 ), and a non-inverting operational amplifier (12A) using an operational amplifier. 제1항에 있어서. 상기 A/D변환수단은 레벨변환되어 보정된 아날로그 검출신호를 디지탈 신호로 변환시키는 A/D 변환기(13A)와, A/D 변환에 따른 동기 신호를 발생시키는 동기클럭 발생기(13B)와, A/D 변환에 따른 기준 전압을 발생시키는 기준전압 발생기(13C)와, 마이크로 컴퓨터의 CPU로 디지탈변환 데이타를 전송하기 위한 3상태 버퍼(13D)와. 마이크로 프로세서의 어드레스 선택 및 해독신호를 검출하여 상기 3상태 버퍼를 동작시키기 위한 논리게이트(13E)로 구성된 것을 특징으로 하는 전광표시 장치에서의 고장 자체 진단회로.The method of claim 1. The A / D conversion means includes an A / D converter 13A for converting a level-corrected and corrected analog detection signal into a digital signal, a synchronous clock generator 13B for generating a synchronization signal according to A / D conversion, and A A reference voltage generator 13C for generating a reference voltage according to the / D conversion, and a three-state buffer 13D for transmitting digital conversion data to the CPU of the microcomputer. And a logic gate (13E) for operating the tri-state buffer by detecting address selection and readout signals of a microprocessor. 제1항에 있어서. 상기 진단 제어수단은 주표시 콘트롤러로부터 에러 체크 명령 및 방법에 대한 지령을 수신받아 그에 따른 입출력 장치로의 데이타 입출력 및 A/D 변환기 제어동작을 수행하는 마이크로 컴퓨터(14A)와,주표시 콘트롤러와의 정보를 송,수신하는 직렬 입출력장치 (14C)와, 데이타 선택부와 연결되어 채널선택 제어신호를 전송하는 병렬 입출력장치(14B)로 구성된 것온 특징으로 하는 전광표시 장치에서의 고장 자체 진단회로.The method of claim 1. The diagnostic control means receives a command for an error check command and a method from the main display controller, and performs a microcomputer 14A for performing data input / output and A / D converter control operations to the input / output device accordingly, and the main display controller. A self-diagnosis circuit for an all-optical display device comprising a serial input / output device (14C) for transmitting and receiving information and a parallel input / output device (14B) connected with a data selector for transmitting a channel selection control signal. 제1항에 있어서, 상기 전류검출 수단은 전류가 흐르는 도선 주위에 발생되는 자속으로 전압을 유기시켜 주표시 콘트롤러, 문자표시장치 전원공급기 및 전광표시장치와 절연상태에서 전류를 검출하도록 구성된 것을 특징으로 하는 전광표시 장치에서의 고장 자체 진단회로.The method of claim 1, wherein the current detection means is configured to induce a voltage to the magnetic flux generated around the conducting current flows to detect the current in an insulated state from the main display controller, the character display device power supply and the all-optical display device. Self-diagnosis circuit for faults in all-optical displays. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020773A 1992-11-06 1992-11-06 Circuit for seif-diagnosing troubles of electric light sign apparatus KR950006578B1 (en)

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KR1019920020773A KR950006578B1 (en) 1992-11-06 1992-11-06 Circuit for seif-diagnosing troubles of electric light sign apparatus

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KR1019920020773A KR950006578B1 (en) 1992-11-06 1992-11-06 Circuit for seif-diagnosing troubles of electric light sign apparatus

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KR950006578B1 KR950006578B1 (en) 1995-06-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160126127A (en) * 2015-04-22 2016-11-02 (주)텍슨 Display apparatus having a power booting portion and method for re-booting power using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160126127A (en) * 2015-04-22 2016-11-02 (주)텍슨 Display apparatus having a power booting portion and method for re-booting power using the same

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KR950006578B1 (en) 1995-06-19

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