JPS5518931A - Electronic watch of liquid crystal dispaly - Google Patents
Electronic watch of liquid crystal dispalyInfo
- 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
Links
Landscapes
- Electric Clocks (AREA)
- 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
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)
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 |
-
1978
- 1978-07-26 JP JP9131078A patent/JPS5518931A/en active Pending
Cited By (7)
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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