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KR900018799A - LED drive method - Google Patents

LED drive method Download PDF

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Publication number
KR900018799A
KR900018799A KR1019890007319A KR890007319A KR900018799A KR 900018799 A KR900018799 A KR 900018799A KR 1019890007319 A KR1019890007319 A KR 1019890007319A KR 890007319 A KR890007319 A KR 890007319A KR 900018799 A KR900018799 A KR 900018799A
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KR
South Korea
Prior art keywords
output
data
period
mpu
light emitting
Prior art date
Application number
KR1019890007319A
Other languages
Korean (ko)
Other versions
KR920005605B1 (en
Inventor
김성택
Original Assignee
정용문
삼성전자 주식회사
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Application filed by 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019890007319A priority Critical patent/KR920005605B1/en
Publication of KR900018799A publication Critical patent/KR900018799A/en
Application granted granted Critical
Publication of KR920005605B1 publication Critical patent/KR920005605B1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

내용 없음No content

Description

LED 드라이브 방식LED drive method

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

제2도는 본 발명에 따른 LED드라이버회로, 제3도는 제2도 동작을 설명하는 동작 파형도.2 is an LED driver circuit according to the present invention, Figure 3 is an operation waveform diagram illustrating the operation of FIG.

Claims (1)

LED드라이브 방식에 있어서, 소정 행위에 따른 상태를 디스플레이하기 위한 소정 갯수의 데이타 출력포트를 가지며 소정갯수의 싱크데이타 출력포트로 소정주기의 싱크데이타를 순차출력하며, 소정의 제1단자로 상기 싱크데이타 출력주기와 동일하게 래치신호를 출력하는 MPU(12)와, 소정 개수의 행라인(RL1-RL4)과 열라인(CL1-CL4)사이에 다수개의 발광다이오드가 마트릭스형으로 접속된 발광다이오드 어레이 (24)와, 상기 MPU(12)의 표시데이타 출력포트와 싱크데이타 출력포트에 데이타 입력포트가 접속되며 출력단자가 상기 발광다이오드어레이(24)의 행라인과 열라인에 접속되어 상기 MPU(12)의 래치신호 출력에 의해 입력표시데이타와 싱크데이타를 래치하여 상기 발광다이오드 어레이(24)의 행라인 및 열라인에 소스전류와 싱크전류로 출력하는 3-상태래치(14)를 구비하여 상기 MPU(12)의 각표시데이타 출력포트와 상기 제1출력단자에서 각각 출력되는 △t주기의 표시데이타 및 래치신호 ALE가 T-△t시간의 간격으로 출력되고, 상기 싱크데이타 출력포트로는 △t주기의 싱크데이타가 T-△t시간 간격으로 순차 출력되며, 상기 래치회로(14)가 상기 MPU(12)로부타 출력되는 △t주기의 표시데이타와 싱크데이타를 상기 래치신호에 의해 T- △t만큼 지연하여 상기 발광다이오드 어레이(24)의 다수의 행라인들과 다수의 열라인들에 각각 제공토록 동작함을 특징으로 하는 LED드라이브 방식.In the LED drive method, it has a predetermined number of data output ports for displaying a state according to a predetermined action, and sequentially outputs sync data of a predetermined period to a predetermined number of sync data output ports, and the sink data is output to a predetermined first terminal. A light emitting diode array in which a plurality of light emitting diodes are connected in a matrix form between an MPU 12 that outputs a latch signal and a predetermined number of row lines RL1-RL4 and column lines CL1-CL4 in the same way as the output period. A data input port is connected to the display data output port and the sync data output port of the MPU 12, and an output terminal thereof is connected to a row line and a column line of the light emitting diode array 24, and the MPU 12 The tri-state latch 14 latches the input display data and the sink data by the latch signal output of the output signal and outputs the source and sink currents to the row and column lines of the light emitting diode array 24. ? Display period of the? Period and the latch signal ALE output from each display data output port of the MPU 12 and the first output terminal, respectively, are output at intervals of T-? T time, and the sync data is output. As the output port, sink data of? T period is sequentially output at intervals of T-? T time, and latching of display data and sink data of? T period outputted from the latch circuit 14 to the MPU 12 is performed. And a plurality of row lines and a plurality of column lines of the light emitting diode array 24, respectively, delayed by a signal T-Δt by a signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890007319A 1989-05-31 1989-05-31 Led driving method KR920005605B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890007319A KR920005605B1 (en) 1989-05-31 1989-05-31 Led driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890007319A KR920005605B1 (en) 1989-05-31 1989-05-31 Led driving method

Publications (2)

Publication Number Publication Date
KR900018799A true KR900018799A (en) 1990-12-22
KR920005605B1 KR920005605B1 (en) 1992-07-09

Family

ID=19286612

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890007319A KR920005605B1 (en) 1989-05-31 1989-05-31 Led driving method

Country Status (1)

Country Link
KR (1) KR920005605B1 (en)

Also Published As

Publication number Publication date
KR920005605B1 (en) 1992-07-09

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