JPS5518931A - Electronic watch of liquid crystal dispaly - Google Patents

Electronic watch of liquid crystal dispaly

Info

Publication number
JPS5518931A
JPS5518931A JP9131078A JP9131078A JPS5518931A JP S5518931 A JPS5518931 A JP S5518931A JP 9131078 A JP9131078 A JP 9131078A JP 9131078 A JP9131078 A JP 9131078A JP S5518931 A JPS5518931 A JP S5518931A
Authority
JP
Japan
Prior art keywords
potential
signal
reduction
liquid crystal
voltage
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
JP9131078A
Other languages
Japanese (ja)
Inventor
Fukuo Sekiya
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP9131078A priority Critical patent/JPS5518931A/en
Publication of JPS5518931A publication Critical patent/JPS5518931A/en
Pending legal-status Critical Current

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  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To maintain the matching between a drive circuit and a liquid crystal display device by controlling the interrupting signal in response to a reduction predicting signal of a main voltage.
CONSTITUTION: An adjusting terminal 112 for matching the effective voltage values VON and VOFF, which are to be impressed upon a segment under the respective conditions of ON and OFF with the characteristics of a liquid crystal, is connected in advance with a potential "L" or "H" in accordance with the characteristics of the liquid crystal within the watch. If the terminal 112 is connected with the potential "L" when a main voltage reduction predicting signal is generated for the reduction in the battery voltage due the drive of an illuminator, the output of a gate 120 is selected as a RESET signal so that the pulse width of the interrupting signal becomes, e.g., 1/16. On the other hand, if the terminal 112 is at the potential "H", the outpt of an OR gate becomes the potential "H" so that the RESET signal also takes the potential "H" thereby to reduce the pulse width of the interrupting signal to zero. By reducing the pulse width of the interrupting signal in that way, the reduction in the voltage VON to be predicted by the reduction in the battery voltage can be compensated.
COPYRIGHT: (C)1980,JPO&Japio
JP9131078A 1978-07-26 1978-07-26 Electronic watch of liquid crystal dispaly Pending JPS5518931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9131078A JPS5518931A (en) 1978-07-26 1978-07-26 Electronic watch of liquid crystal dispaly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9131078A JPS5518931A (en) 1978-07-26 1978-07-26 Electronic watch of liquid crystal dispaly

Publications (1)

Publication Number Publication Date
JPS5518931A true JPS5518931A (en) 1980-02-09

Family

ID=14022887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9131078A Pending JPS5518931A (en) 1978-07-26 1978-07-26 Electronic watch of liquid crystal dispaly

Country Status (1)

Country Link
JP (1) JPS5518931A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775335A (en) * 1980-10-27 1982-05-11 Hitachi Ltd Data processor
JPS5783833A (en) * 1980-11-12 1982-05-25 Nec Corp Information processor
JPS6077134U (en) * 1983-10-31 1985-05-29 シャープ株式会社 Home security system transmitter
JPS6299878A (en) * 1985-10-25 1987-05-09 Mitsubishi Electric Corp Data demodulator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775335A (en) * 1980-10-27 1982-05-11 Hitachi Ltd Data processor
JPH0157811B2 (en) * 1980-10-27 1989-12-07 Hitachi Ltd
JPS5783833A (en) * 1980-11-12 1982-05-25 Nec Corp Information processor
JPS6312285B2 (en) * 1980-11-12 1988-03-18 Nippon Electric Co
JPS6077134U (en) * 1983-10-31 1985-05-29 シャープ株式会社 Home security system transmitter
JPH039396Y2 (en) * 1983-10-31 1991-03-08
JPS6299878A (en) * 1985-10-25 1987-05-09 Mitsubishi Electric Corp Data demodulator

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