JPH0449673B2 - - Google Patents
Info
- Publication number
- JPH0449673B2 JPH0449673B2 JP57056948A JP5694882A JPH0449673B2 JP H0449673 B2 JPH0449673 B2 JP H0449673B2 JP 57056948 A JP57056948 A JP 57056948A JP 5694882 A JP5694882 A JP 5694882A JP H0449673 B2 JPH0449673 B2 JP H0449673B2
- Authority
- JP
- Japan
- Prior art keywords
- rotation detection
- circuit
- detection circuit
- drive pulse
- rotor
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
- G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5694882A JPS58173479A (ja) | 1982-04-06 | 1982-04-06 | 電子時計 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5694882A JPS58173479A (ja) | 1982-04-06 | 1982-04-06 | 電子時計 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58173479A JPS58173479A (ja) | 1983-10-12 |
JPH0449673B2 true JPH0449673B2 (en:Method) | 1992-08-12 |
Family
ID=13041770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5694882A Granted JPS58173479A (ja) | 1982-04-06 | 1982-04-06 | 電子時計 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58173479A (en:Method) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53114467A (en) * | 1977-03-16 | 1978-10-05 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS547745A (en) * | 1977-06-20 | 1979-01-20 | Matsushita Electric Works Ltd | Door |
JPS5587977A (en) * | 1978-12-26 | 1980-07-03 | Seiko Instr & Electronics Ltd | Device for detecting electronic watch |
-
1982
- 1982-04-06 JP JP5694882A patent/JPS58173479A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58173479A (ja) | 1983-10-12 |
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