JPH03172999A - Electronic equipment using liquid crystal display panel - Google Patents

Electronic equipment using liquid crystal display panel

Info

Publication number
JPH03172999A
JPH03172999A JP31285689A JP31285689A JPH03172999A JP H03172999 A JPH03172999 A JP H03172999A JP 31285689 A JP31285689 A JP 31285689A JP 31285689 A JP31285689 A JP 31285689A JP H03172999 A JPH03172999 A JP H03172999A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
turned
led
abnormality
back light
sw
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.)
Pending
Application number
JP31285689A
Inventor
Yoji Sugito
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

Links

Abstract

PURPOSE: To notify the occurrence of abnormality to an operator without fail in comparison with a device to display a warning message or to generate a buzzer tone by executing warning by the back light of a liquid crystal display device when the abnormality occurs.
CONSTITUTION: When the back light is turned on in order to execute a normal processing, an SW 4a of a white LED is turned on and the back light is turned on. When the occurrence of the abnormality is detected by a CPU 7, the SW 4a of the white LED is turned off and an SW 4b of a red LED is turned on. Then, the red LED is turned on instead of the white LED. When it is judged that the abnormality is canceled, the SW 4b of the red LED is turned off and the white LED is turned on. Not only the LED as the example of the back light but also a light emitting element such as electroluminance, etc., is used to realize the similar effect.
COPYRIGHT: (C)1991,JPO&Japio
JP31285689A 1989-12-01 1989-12-01 Electronic equipment using liquid crystal display panel Pending JPH03172999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31285689A JPH03172999A (en) 1989-12-01 1989-12-01 Electronic equipment using liquid crystal display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31285689A JPH03172999A (en) 1989-12-01 1989-12-01 Electronic equipment using liquid crystal display panel

Publications (1)

Publication Number Publication Date
JPH03172999A true true JPH03172999A (en) 1991-07-26

Family

ID=18034261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31285689A Pending JPH03172999A (en) 1989-12-01 1989-12-01 Electronic equipment using liquid crystal display panel

Country Status (1)

Country Link
JP (1) JPH03172999A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342435A (en) * 1998-09-26 2000-04-12 Richard Knight An angle adjustment device
GB2362207B (en) * 1998-09-26 2002-07-24 Richard Knight Automated lighting
JP2004333583A (en) * 2003-04-30 2004-11-25 Fujitsu Ltd Liquid crystal display device
JP2007155829A (en) * 2005-11-30 2007-06-21 Aiphone Co Ltd Liquid crystal module
JP2010267045A (en) * 2009-05-14 2010-11-25 Amano Corp Work management device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342435A (en) * 1998-09-26 2000-04-12 Richard Knight An angle adjustment device
GB2342435B (en) * 1998-09-26 2001-11-14 Richard Knight Angle adjustment device
US6390643B1 (en) 1998-09-26 2002-05-21 Richard Knight Angle adjustment device
GB2362207B (en) * 1998-09-26 2002-07-24 Richard Knight Automated lighting
US7004603B2 (en) 1998-09-26 2006-02-28 Richard Knight Angle adjustment device
JP2004333583A (en) * 2003-04-30 2004-11-25 Fujitsu Ltd Liquid crystal display device
JP2007155829A (en) * 2005-11-30 2007-06-21 Aiphone Co Ltd Liquid crystal module
JP2010267045A (en) * 2009-05-14 2010-11-25 Amano Corp Work management device

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