JPS55110981A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS55110981A JPS55110981A JP1807579A JP1807579A JPS55110981A JP S55110981 A JPS55110981 A JP S55110981A JP 1807579 A JP1807579 A JP 1807579A JP 1807579 A JP1807579 A JP 1807579A JP S55110981 A JPS55110981 A JP S55110981A
- Authority
- JP
- Japan
- Prior art keywords
- resonance
- temperature characteristic
- crystal resonators
- electronic watch
- resonance circuit
- 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)
Abstract
PURPOSE: To improve the temperature characteristic while upgrading the massproductivity by combining a plurality of crystal resonators.
CONSTITUTION: The resonance signals of resonance circuits 102W104 including crystal resonators are added 105. The addition output is converted into a constant amplitude of strained waveform with a saturable amplifier 101 to drive each resonance circuit. As a result, each resonance circuit performs a linear combined resonance action thereby affording a simple temperature characteristic curve f-ABC.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1807579A JPS55110981A (en) | 1979-02-19 | 1979-02-19 | Electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1807579A JPS55110981A (en) | 1979-02-19 | 1979-02-19 | Electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110981A true JPS55110981A (en) | 1980-08-27 |
Family
ID=11961530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1807579A Pending JPS55110981A (en) | 1979-02-19 | 1979-02-19 | Electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110981A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4745376A (en) * | 1987-02-06 | 1988-05-17 | Honeywell Inc. | Fault tolerant oscillator circuit having redundant resonant elements |
WO2002095930A1 (en) * | 2001-05-21 | 2002-11-28 | Thomson Licensing S.A. | Wide band voltage controlled crystal oscillator |
US6707347B2 (en) * | 2001-01-26 | 2004-03-16 | Nihon Dempa Kogyo, Co., Ltd. | Crystal oscillator that utilizes the power transistor of an output amplifier to heat the crystal resonator |
-
1979
- 1979-02-19 JP JP1807579A patent/JPS55110981A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4745376A (en) * | 1987-02-06 | 1988-05-17 | Honeywell Inc. | Fault tolerant oscillator circuit having redundant resonant elements |
US6707347B2 (en) * | 2001-01-26 | 2004-03-16 | Nihon Dempa Kogyo, Co., Ltd. | Crystal oscillator that utilizes the power transistor of an output amplifier to heat the crystal resonator |
WO2002095930A1 (en) * | 2001-05-21 | 2002-11-28 | Thomson Licensing S.A. | Wide band voltage controlled crystal oscillator |
US7180382B2 (en) | 2001-05-21 | 2007-02-20 | Thomson Licensing | Wide band voltage controlled crystal oscillator |
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