JPS56168187A - Emergency mechanism of electronic wristwatch - Google Patents
Emergency mechanism of electronic wristwatchInfo
- Publication number
- JPS56168187A JPS56168187A JP6822480A JP6822480A JPS56168187A JP S56168187 A JPS56168187 A JP S56168187A JP 6822480 A JP6822480 A JP 6822480A JP 6822480 A JP6822480 A JP 6822480A JP S56168187 A JPS56168187 A JP S56168187A
- Authority
- JP
- Japan
- Prior art keywords
- emergency
- controlling
- external operation
- accuracy
- emergency mechanism
- 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
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
PURPOSE:To easily secure a high accuracy, by providing an emergency mechanism which is capable of controlling for a gain/losing with an external operation plus another emergency mechanism which is capable of controlling the same in a circuit block state or in a movement state and incapable of controlling with an external operation. CONSTITUTION:An electronic wristwatch is provided with not only a logical emergency mechanism A which emerges by an external operation but another emergency mechanism B which is incapable of operation from outside and has no change even with an exchange of battery. With said mechanism B, a nominal accuracy of about + or -15 seconds per month can be secured. In other words, the mechanism B is provided with a quartz oscillator 31 and a trimmer capacitor 32, and the oscillation frequency of the oscillator 31 is controlled by varying the capacity of the capacitor 32. Thus an emergency is given to the time rate. In such way, the mechanism B adapts such system in which the degree of emergency has no change although the primary power source is removed when exchanging the battery. Thus the nominal accuracy of the wristwatch is ensured by the mechanism B only to secure the nominal accuracy at all times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6822480A JPS56168187A (en) | 1980-05-22 | 1980-05-22 | Emergency mechanism of electronic wristwatch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6822480A JPS56168187A (en) | 1980-05-22 | 1980-05-22 | Emergency mechanism of electronic wristwatch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56168187A true JPS56168187A (en) | 1981-12-24 |
Family
ID=13367618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6822480A Pending JPS56168187A (en) | 1980-05-22 | 1980-05-22 | Emergency mechanism of electronic wristwatch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56168187A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110886U (en) * | 1982-01-25 | 1983-07-28 | セイコーエプソン株式会社 | Electronic clock circuit switch structure |
| US6616328B1 (en) | 1999-10-26 | 2003-09-09 | Seiko Instruments Inc. | High accuracy timepiece |
-
1980
- 1980-05-22 JP JP6822480A patent/JPS56168187A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110886U (en) * | 1982-01-25 | 1983-07-28 | セイコーエプソン株式会社 | Electronic clock circuit switch structure |
| JPS6237188Y2 (en) * | 1982-01-25 | 1987-09-22 | ||
| US6616328B1 (en) | 1999-10-26 | 2003-09-09 | Seiko Instruments Inc. | High accuracy timepiece |
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