JPS59132276U - Light emitting element drive circuit - Google Patents

Light emitting element drive circuit

Info

Publication number
JPS59132276U
JPS59132276U JP2502483U JP2502483U JPS59132276U JP S59132276 U JPS59132276 U JP S59132276U JP 2502483 U JP2502483 U JP 2502483U JP 2502483 U JP2502483 U JP 2502483U JP S59132276 U JPS59132276 U JP S59132276U
Authority
JP
Japan
Prior art keywords
light emitting
emitting element
memory
drive circuit
element drive
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP2502483U
Other languages
Japanese (ja)
Other versions
JPH021983Y2 (en
Inventor
博司 古谷
安孫子　一松
俊二 坂井
立石　和義
星野　坦之
正人 小林
Original Assignee
沖電気工業株式会社
日本電信電話株式会社
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.)
Filing date
Publication date
Application filed by 沖電気工業株式会社, 日本電信電話株式会社 filed Critical 沖電気工業株式会社
Priority to JP2502483U priority Critical patent/JPS59132276U/en
Publication of JPS59132276U publication Critical patent/JPS59132276U/en
Application granted granted Critical
Publication of JPH021983Y2 publication Critical patent/JPH021983Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Control By Computers (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図と第２図は従来のＬＥＤ駆動回路結線図とその説
明図、第３図は本考案の一実施例を示す回路結線図、第
４図はその各部の信号説明図、第５図はＲＯＭ′１２の
内容を示した図である。 １１〜１□０・・・ＬＥＤアレイ、２□〜２□０・・・
電流増巾Ｌ４−・・シフトレジネタ、５１〜５１０・・
・ＬＥＤアレイ、６１〜６１ｏ・・・電流増巾器、７・
・・電源供給端子、８１〜８１゜・・・データラッチ回
路、９・・・比較回路、１０・・・画素メモリ、１１・
・・カウンタ、１２・・・ＲＯＭ％Ｓ８・・・基準時刻
のカウント値、Ｗ・・・発光時間調整用データ。Figures 1 and 2 are a conventional LED drive circuit wiring diagram and its explanatory diagram, Figure 3 is a circuit diagram showing an embodiment of the present invention, Figure 4 is a signal diagram of each part, and Figure 5. 1 is a diagram showing the contents of ROM'12. 11~1□0...LED array, 2□~2□0...
Current amplification L4--Shift register, 51 to 510...
・LED array, 61~61o...Current amplifier, 7・
...Power supply terminal, 81~81°...Data latch circuit, 9...Comparison circuit, 10...Pixel memory, 11.
...Counter, 12...ROM%S8...Count value of reference time, W...Data for light emission time adjustment.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複数の発光素子と、夫々の発光素子に電源電流を供給し
得る電流増幅回路と、画素データ、を記憶する画素メモ
リと、発光の基準時間をカウントするカウンタと、当該
カウンタの各カウント値において連環的に各発光素子の
発光時間調整量を出力するメモリと、当該メモリの出力
と前記画素メモリの出力とを比較し且つその比較出力を
ラッチする回路とを備え、各発光素子の前記発光時間調
整量に応じて各発光素子の通電時間を制御することを特
徴とした発光素子駆動回路。A plurality of light emitting elements, a current amplifying circuit capable of supplying a power supply current to each light emitting element, a pixel memory that stores pixel data, a counter that counts a reference time of light emission, and a linkage in each count value of the counter. a memory that outputs the light emission time adjustment amount of each light emitting element, and a circuit that compares the output of the memory with the output of the pixel memory and latches the comparison output; A light emitting element drive circuit characterized by controlling the energization time of each light emitting element according to the amount of electricity.
JP2502483U 1983-02-24 1983-02-24 Light emitting element drive circuit Granted JPS59132276U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2502483U JPS59132276U (en) 1983-02-24 1983-02-24 Light emitting element drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2502483U JPS59132276U (en) 1983-02-24 1983-02-24 Light emitting element drive circuit

Publications (2)

Publication Number Publication Date
JPS59132276U true JPS59132276U (en) 1984-09-05
JPH021983Y2 JPH021983Y2 (en) 1990-01-18

Family

ID=30156030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2502483U Granted JPS59132276U (en) 1983-02-24 1983-02-24 Light emitting element drive circuit

Country Status (1)

Country Link
JP (1) JPS59132276U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007050597A (en) * 2005-08-18 2007-03-01 Seiko Epson Corp Illuminating device, image forming device, and displaying device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374830A (en) * 1976-12-13 1978-07-03 Western Electric Co Facsimile receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5374830A (en) * 1976-12-13 1978-07-03 Western Electric Co Facsimile receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007050597A (en) * 2005-08-18 2007-03-01 Seiko Epson Corp Illuminating device, image forming device, and displaying device

Also Published As

Publication number Publication date
JPH021983Y2 (en) 1990-01-18

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