KR910013041A - LCD driving circuit and method using a single LCD controller - Google Patents

LCD driving circuit and method using a single LCD controller Download PDF

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Publication number
KR910013041A
KR910013041A KR1019890019647A KR890019647A KR910013041A KR 910013041 A KR910013041 A KR 910013041A KR 1019890019647 A KR1019890019647 A KR 1019890019647A KR 890019647 A KR890019647 A KR 890019647A KR 910013041 A KR910013041 A KR 910013041A
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KR
South Korea
Prior art keywords
value
lcd
data
lcd controller
state
Prior art date
Application number
KR1019890019647A
Other languages
Korean (ko)
Other versions
KR920009664B1 (en
Inventor
계신응
Original Assignee
정용문
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 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019890019647A priority Critical patent/KR920009664B1/en
Publication of KR910013041A publication Critical patent/KR910013041A/en
Application granted granted Critical
Publication of KR920009664B1 publication Critical patent/KR920009664B1/en

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Classifications

    • 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
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

내용 없음.No content.

Description

단일 LCD 콘크롤러에 의한 복수의 LCD 구동회로 및 방법LCD driving circuit and method using a single LCD controller

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

제1도는 본 발명에 따른 회로도.1 is a circuit diagram according to the present invention.

제2도는 본 발명에 따른 동작파형도.2 is an operational waveform diagram according to the present invention.

제3도는 본 발명에 따른 데이타 구성도.3 is a data structure according to the present invention.

Claims (2)

마이크로 컴퓨터(10)와 LCD 콘트롤러(20)를 구비한 액정 디스플레이 장치(LCD1 - LCD4)의 구동제어회로에 있어서, 복수개의 액정 디스플레이장치(LCD1 - LCD4)를 전용으로 구동하기 위한 LCD 콘트롤러(20)와, 상기 LCD 콘트롤러(20)에 디스플레이용 데이타를 제공하는 마이크로 컴퓨터(10)와, 상기 LCD 콘트롤러(20)에서 출력되는 디스플레이용 데이타를 래치하여 상기 액정 디스플레이 장치(LCD1 - LCD4) 제공하는 래치(30 - 60)와, 상기 LCD콘트롤러(20)에서 출력되는 데이타를 디코딩하여 상기 래치(30 - 60)를 인에이블하는 신호를 발생하는 디코더(70)로 구성됨을 특징으로 하는 단일 LCD콘트롤러에 의한 복수의 LCD 구동회로.In the drive control circuit of the liquid crystal display devices LCD1-LCD4 having the microcomputer 10 and the LCD controller 20, an LCD controller 20 for exclusively driving the plurality of liquid crystal display devices LCD1-LCD4. And a microcomputer 10 for providing display data to the LCD controller 20 and a latch for latching display data output from the LCD controller 20 to provide the liquid crystal display device (LCD1 to LCD4). 30 to 60, and a decoder 70 for decoding a data output from the LCD controller 20 to generate a signal for enabling the latches 30 to 60. LCD drive circuit. 액정 디스플레이 장치 구동방법에 있어서, 모드 플랙값으로부터 벨리드(valid)상태를 체킹하는 제1과정과, 상기 제1과정에서 벨리드 상태가 “0” 일 때 모드 출력값의 상태를 체킹하는 제2 과정과, 상기 제2과정에서 모드 플랙이 “1” 일 때 데이타버스의 값을 디스플레이 데이타로 출력하고 플랙값이 “1” 일 때 데이타 버스의 값을 제어데이타로 출력하는 제3과정과, 상기 제3과정의 각 출력 데이타값을 잘 전송되었는지를 인식(ACK)신호를 받아 벨리드 상태의 값이 “1” 인가를 체킹하는 제4과정과, 상기 제4과정에서 벨리드 상태의 값이 “1” 일 때 인식 (ACK) 신호를 “0” 로 하고 모드 플랙이 “1” 인가를 체킹하는 제5과정과, 상기 제5과정에서 모드 플랙값이 “1” 일 때 데이타가 유효한가를 체킹하여 데이타를 디코딩하여 해당 LCD를 제어하는 제6과정으로 이루어짐을 특징으로 하는 단일 LCD 콘트롤러에 의한 복수의 LCD 구동방법.1. A method of driving a liquid crystal display device, the method comprising: a first step of checking a valed state from a mode flag value, and a second step of checking a state of a mode output value when the belied state is “0” in the first step And a third step of outputting the value of the data bus as display data when the mode flag is "1" in the second step and outputting the value of the data bus as control data when the flag value is "1". A fourth step of checking whether the value of the beaded state is “1” by receiving an acknowledgment (ACK) signal indicating whether each output data value of the third process is well transmitted; and in the fourth process, the value of the beaded state is “1”. Is a zero (0) and checks whether the mode flag is "1", and checks whether the data is valid when the mode flag is "1" in the fifth step. To control the corresponding LCD by decoding the A plurality of LCD driving method of the single LCD controller, characterized by constituted by any. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890019647A 1989-12-27 1989-12-27 Circuit which drives plurally lcd with single lcd controller KR920009664B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890019647A KR920009664B1 (en) 1989-12-27 1989-12-27 Circuit which drives plurally lcd with single lcd controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890019647A KR920009664B1 (en) 1989-12-27 1989-12-27 Circuit which drives plurally lcd with single lcd controller

Publications (2)

Publication Number Publication Date
KR910013041A true KR910013041A (en) 1991-08-08
KR920009664B1 KR920009664B1 (en) 1992-10-22

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ID=19293754

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890019647A KR920009664B1 (en) 1989-12-27 1989-12-27 Circuit which drives plurally lcd with single lcd controller

Country Status (1)

Country Link
KR (1) KR920009664B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100482815B1 (en) * 2002-08-19 2005-04-14 엘지전자 주식회사 A system and method for operating lcd module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100482815B1 (en) * 2002-08-19 2005-04-14 엘지전자 주식회사 A system and method for operating lcd module

Also Published As

Publication number Publication date
KR920009664B1 (en) 1992-10-22

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