JPS5524656A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5524656A JPS5524656A JP9790478A JP9790478A JPS5524656A JP S5524656 A JPS5524656 A JP S5524656A JP 9790478 A JP9790478 A JP 9790478A JP 9790478 A JP9790478 A JP 9790478A JP S5524656 A JPS5524656 A JP S5524656A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- capacity
- voltage
- varied
- liquid crystal
- 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
- Electromechanical Clocks (AREA)
- Measurement Of Current Or Voltage (AREA)
- Electric Clocks (AREA)
Abstract
PURPOSE: To display the capacity of a battery by detecting the voltage of the battery, which is varied in proportion to the capacity, to accomplish the liquid crystal displays of different colors.
CONSTITUTION: The terminal voltage of a secondary battery 3, the voltage of which is used for driving a watch and varied in proportion to the capacity, is detected by the voltage dividing resistors r1 and r2 of a battery detecting circuit 4 and is compared with the stepwise standard voltages E1, E2 and so on so that the high level signals corresponding to the capacity of the battery 3 are latched by latch circuits L1, L2 and so on. By the output of the latches, the openings of the AND gates of a variable boosting circuit 5 are controlled so that the frequency of the clock to be impressed upon the D-type FF is selected. As a result, the discharge time of a capacitor is varied so that the variable boosting voltage corresponding to the capacity of the bettery 3 is applied to a liquid crystal drive circuit 6 and is displayed in a liquid crystal display in different colors in accordance with the capacity of the battery. As a result, through the charge control circuit 2, the necessity and unnecessity of the battery 3 by a solar cell 1, the proper charging timing, the charging condition and the like are cleared to provide a convenient electronic watch.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9790478A JPS5524656A (en) | 1978-08-11 | 1978-08-11 | Electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9790478A JPS5524656A (en) | 1978-08-11 | 1978-08-11 | Electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5524656A true JPS5524656A (en) | 1980-02-21 |
Family
ID=14204703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9790478A Pending JPS5524656A (en) | 1978-08-11 | 1978-08-11 | Electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5524656A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5749808A (en) * | 1980-09-10 | 1982-03-24 | Toshiba Corp | Circuit for adjusting zero point of sensor in sensing device |
| JPS58171676A (en) * | 1982-04-02 | 1983-10-08 | Hitachi Ltd | Device for measuring impulse voltage |
| JPS60203887A (en) * | 1984-03-29 | 1985-10-15 | Seiko Epson Corp | Electronic timepiece |
| JPS61124887A (en) * | 1984-11-21 | 1986-06-12 | Seiko Epson Corp | Electronic timepiece |
| JPS61161483A (en) * | 1985-01-10 | 1986-07-22 | Seiko Epson Corp | Electronic timepiece |
| JPS61194386A (en) * | 1985-02-25 | 1986-08-28 | Seiko Epson Corp | Electronic timepiece |
| JPS61286785A (en) * | 1985-03-29 | 1986-12-17 | Seiko Epson Corp | Electronic timepiece |
-
1978
- 1978-08-11 JP JP9790478A patent/JPS5524656A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5749808A (en) * | 1980-09-10 | 1982-03-24 | Toshiba Corp | Circuit for adjusting zero point of sensor in sensing device |
| JPS58171676A (en) * | 1982-04-02 | 1983-10-08 | Hitachi Ltd | Device for measuring impulse voltage |
| JPS60203887A (en) * | 1984-03-29 | 1985-10-15 | Seiko Epson Corp | Electronic timepiece |
| JPS61124887A (en) * | 1984-11-21 | 1986-06-12 | Seiko Epson Corp | Electronic timepiece |
| JPS61161483A (en) * | 1985-01-10 | 1986-07-22 | Seiko Epson Corp | Electronic timepiece |
| JPS61194386A (en) * | 1985-02-25 | 1986-08-28 | Seiko Epson Corp | Electronic timepiece |
| JPS61286785A (en) * | 1985-03-29 | 1986-12-17 | Seiko Epson Corp | Electronic timepiece |
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