JPS5448283A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5448283A JPS5448283A JP11445577A JP11445577A JPS5448283A JP S5448283 A JPS5448283 A JP S5448283A JP 11445577 A JP11445577 A JP 11445577A JP 11445577 A JP11445577 A JP 11445577A JP S5448283 A JPS5448283 A JP S5448283A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- watch
- measurement
- waveform
- electronic watch
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/0064—Visual time or date indication means in which functions not related to time can be displayed
Abstract
PURPOSE:To make possible the measurement of the number of vibration of a vibrator with ease, by providing a device of detecting the number of vibration of an object and converting the same to electric signals and a device of displaying the number of vibration, and adding a function of measuring and displaying the number of vibration to an ordinary electronic watch. CONSTITUTION:Light from a light source 101 is reflected by a vibrating object 102 and enters a photo detector 103. From the detector 103, current 105 flows in a resistance 104. The frequency of photo current waveform 105 is equal to the number of vibration of the vibrator. The waveform 105 is converted to voltage waveform by a resistance 104. The voltage waveform then enters a counter 106 then through a decoder 107, and the number of vibration is displayed in a display body 108. Namely, the decoder 107 and display body are able to make common use of the electronic circuits of the digital watch and at the time of measuring the number of vibrations, the circuits are changed over from watch display to the measurement of the number of vibration by a switch. The electronic watch may be carried with ease and its use in tuning of musical instruments as a device of permiting easy measurement of the number of vibration may be widened of range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11445577A JPS5448283A (en) | 1977-09-22 | 1977-09-22 | Electronic watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11445577A JPS5448283A (en) | 1977-09-22 | 1977-09-22 | Electronic watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5448283A true JPS5448283A (en) | 1979-04-16 |
Family
ID=14638151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11445577A Pending JPS5448283A (en) | 1977-09-22 | 1977-09-22 | Electronic watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5448283A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56162081A (en) * | 1980-05-20 | 1981-12-12 | Ricoh Elemex Corp | Electronic timepiece |
| GB2447700A (en) * | 2007-03-23 | 2008-09-24 | James Clark | An optical tuner for a musical instrument |
| GB2447719A (en) * | 2007-03-23 | 2008-09-24 | Jhc Software Ltd | An optical tuner for a musical instrument |
-
1977
- 1977-09-22 JP JP11445577A patent/JPS5448283A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56162081A (en) * | 1980-05-20 | 1981-12-12 | Ricoh Elemex Corp | Electronic timepiece |
| GB2447700A (en) * | 2007-03-23 | 2008-09-24 | James Clark | An optical tuner for a musical instrument |
| GB2447719A (en) * | 2007-03-23 | 2008-09-24 | Jhc Software Ltd | An optical tuner for a musical instrument |
| GB2447719B (en) * | 2007-03-23 | 2009-11-18 | Jhc Software Ltd | Musical instrument tuner |
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