JPS5570777A - Test circuit for electronic watch - Google Patents
Test circuit for electronic watchInfo
- Publication number
- JPS5570777A JPS5570777A JP14479978A JP14479978A JPS5570777A JP S5570777 A JPS5570777 A JP S5570777A JP 14479978 A JP14479978 A JP 14479978A JP 14479978 A JP14479978 A JP 14479978A JP S5570777 A JPS5570777 A JP S5570777A
- Authority
- JP
- Japan
- Prior art keywords
- inputted
- external signal
- test terminal
- test
- step motor
- 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
Abstract
PURPOSE: To make high speed the fast feed test, by electronically cutting off on the way of the frequency dividing stage and determining the step motor drive output with the signal inputted externally, at the test of watches.
CONSTITUTION: When nothing is connected to the test terminal T2, the transmission gates 1 and 2 are conductive, and the output a of the frequency divider 2 is delivered to the frequency dividing period 3 and the test terminal T1 as it is. When the test terminal T2 is at H level, the transmission gates 1, 2 are closed and the output a is not inputted to the frequency divider 3. With this state, when external signal is inputted to the test terminal T1, the signal inverting external signal is inputted to the C input of the flip-flop 4, and the pulse width of the external signal in frequency division 3 is made to a half the external signal and fed to the step motor drive unit 5 to perform fast feed for the step motor 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479978A JPS5570777A (en) | 1978-11-22 | 1978-11-22 | Test circuit for electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479978A JPS5570777A (en) | 1978-11-22 | 1978-11-22 | Test circuit for electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5570777A true JPS5570777A (en) | 1980-05-28 |
Family
ID=15370721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14479978A Pending JPS5570777A (en) | 1978-11-22 | 1978-11-22 | Test circuit for electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5570777A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002880A1 (en) * | 1979-06-19 | 1980-12-24 | Fujitsu Ltd | Integrated circuit having frequency divider circuit adaptable for high-speed testing |
| JPS58162886A (en) * | 1982-03-23 | 1983-09-27 | Seiko Instr & Electronics Ltd | Electronic timepiece |
| JPS62116271A (en) * | 1985-11-15 | 1987-05-27 | Fujitsu Ltd | Test circuit |
| WO2001006329A1 (en) * | 1999-07-16 | 2001-01-25 | Citizen Watch Co., Ltd. | Time piece |
| CN106168751A (en) * | 2015-05-18 | 2016-11-30 | 精工电子有限公司 | Frequency dividing circuit, the control method of frequency dividing circuit and analog electronic clock |
-
1978
- 1978-11-22 JP JP14479978A patent/JPS5570777A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002880A1 (en) * | 1979-06-19 | 1980-12-24 | Fujitsu Ltd | Integrated circuit having frequency divider circuit adaptable for high-speed testing |
| JPS58162886A (en) * | 1982-03-23 | 1983-09-27 | Seiko Instr & Electronics Ltd | Electronic timepiece |
| JPH0449672B2 (en) * | 1982-03-23 | 1992-08-12 | Seiko Instr & Electronics | |
| JPS62116271A (en) * | 1985-11-15 | 1987-05-27 | Fujitsu Ltd | Test circuit |
| JPH0644031B2 (en) * | 1985-11-15 | 1994-06-08 | 富士通株式会社 | Test circuit |
| WO2001006329A1 (en) * | 1999-07-16 | 2001-01-25 | Citizen Watch Co., Ltd. | Time piece |
| US6751164B1 (en) | 1999-07-16 | 2004-06-15 | Citizen Watch Co., Ltd. | Time piece |
| CN106168751A (en) * | 2015-05-18 | 2016-11-30 | 精工电子有限公司 | Frequency dividing circuit, the control method of frequency dividing circuit and analog electronic clock |
| JP2016217817A (en) * | 2015-05-18 | 2016-12-22 | セイコーインスツル株式会社 | Frequency divider circuit, control method for frequency divider circuit, and analog electronic timepiece |
| CN106168751B (en) * | 2015-05-18 | 2019-11-26 | 精工电子有限公司 | Frequency dividing circuit, the control method of frequency dividing circuit and analog electronic clock |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5696532A (en) | Frequency divider | |
| JPS5570777A (en) | Test circuit for electronic watch | |
| JPS54154964A (en) | Programable counter | |
| JPS5533642A (en) | Step motor device for electronic watch | |
| CH608327GA3 (en) | ||
| JPS54133163A (en) | Electronic watch | |
| JPS57194378A (en) | Test circuit of electronic clock | |
| JPS528864A (en) | Oscillator-frequency divider circuit with level shifter of electronic watch | |
| JPS5768929A (en) | Flip-flop circuit | |
| JPS55127735A (en) | Phase synchronizing oscillator | |
| JPS5635065A (en) | Measuring unit of threshold value | |
| JPS5530670A (en) | Electronic watch | |
| JPS551703A (en) | Programmable pulse generator | |
| JPS5491381A (en) | Electronic watch | |
| JPS5516587A (en) | Programmable divider | |
| JPS5373047A (en) | Generation circuit for timing signal | |
| JPS54146668A (en) | Electronic watch | |
| JPS5498556A (en) | Frequency multplication circuit | |
| JPS5352465A (en) | Electronic watch | |
| JPS5662448A (en) | Synchronizing circuit for asynchronous signal | |
| JPS5524659A (en) | Inspecting circuit for electronic watch | |
| JPS5423572A (en) | Electronic wristwatch with alarm | |
| JPS5386273A (en) | Electronic timepiece | |
| JPS5643562A (en) | Frequency counter | |
| JPS6462715A (en) | Power unit |