JPS6461791A - Display device having cold cathode tube - Google Patents

Display device having cold cathode tube

Info

Publication number
JPS6461791A
JPS6461791A JP62218796A JP21879687A JPS6461791A JP S6461791 A JPS6461791 A JP S6461791A JP 62218796 A JP62218796 A JP 62218796A JP 21879687 A JP21879687 A JP 21879687A JP S6461791 A JPS6461791 A JP S6461791A
Authority
JP
Japan
Prior art keywords
luminance
cold cathode
cathode tube
display device
set data
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
JP62218796A
Other languages
Japanese (ja)
Other versions
JP2940619B2 (en
Inventor
Kazuo Karasuyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62218796A priority Critical patent/JP2940619B2/en
Publication of JPS6461791A publication Critical patent/JPS6461791A/en
Application granted granted Critical
Publication of JP2940619B2 publication Critical patent/JP2940619B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

PURPOSE: To obtain a display device whose luminance can be adjusted by providing a means instructing luminance adjustment, a means specifying the luminance, a means deciding the set data of the luminance in accordance with their outputs and a means deciding the luminance based on the set data. CONSTITUTION: The luminance adjustment is instructed by depressing the CODE key CK of a keyboard 1. The luminance is specified by number keys 1-4, and the set data E0 -E3 of the luminance are decided in accordance with the output. The luminance of a cold cathode tube 6 is decided by that the input voltage V for an inverter 5 alternates and is made as the input voltage for the cold cathode tube 6 based on the set data decided. The display device having the cold cathode tube whose luminance is freely easily changed and adjusted so as to make an operator feel it adequate comparing with the display device of the cold cathode tube whose luminance can not be adjusted as in the conventional manner is obtained.
JP62218796A 1987-09-01 1987-09-01 Display control device Expired - Fee Related JP2940619B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62218796A JP2940619B2 (en) 1987-09-01 1987-09-01 Display control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62218796A JP2940619B2 (en) 1987-09-01 1987-09-01 Display control device

Publications (2)

Publication Number Publication Date
JPS6461791A true JPS6461791A (en) 1989-03-08
JP2940619B2 JP2940619B2 (en) 1999-08-25

Family

ID=16725500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62218796A Expired - Fee Related JP2940619B2 (en) 1987-09-01 1987-09-01 Display control device

Country Status (1)

Country Link
JP (1) JP2940619B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891525B2 (en) 2000-02-03 2005-05-10 Nec Corporation Electronic apparatus with backlighting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218593A (en) * 1985-07-17 1987-01-27 シャープ株式会社 Data processor
JPS62123428A (en) * 1985-11-22 1987-06-04 Mitsubishi Electric Corp Liquid crystal display device
JPS62158580A (en) * 1985-12-20 1987-07-14 エルパトロ−ニク・アクチエンゲゼルシヤフト Method and device for combining hollow body with internal body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218593A (en) * 1985-07-17 1987-01-27 シャープ株式会社 Data processor
JPS62123428A (en) * 1985-11-22 1987-06-04 Mitsubishi Electric Corp Liquid crystal display device
JPS62158580A (en) * 1985-12-20 1987-07-14 エルパトロ−ニク・アクチエンゲゼルシヤフト Method and device for combining hollow body with internal body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891525B2 (en) 2000-02-03 2005-05-10 Nec Corporation Electronic apparatus with backlighting device

Also Published As

Publication number Publication date
JP2940619B2 (en) 1999-08-25

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees