Electronic watch with control means for selecting and correcting time data
US4419018A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Jan 29, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G5/027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The watch comprises a plurality of stores, each containing a particular item of time data and each producing an output signal representing the data therein. A single operating button is displaceable by the user of the watch, on the one hand in the axial direction between a pushed-in position and a pulled-out position for which a switch is respectively open and closed, and on the other hand rotatably. Rotation of the button closes and opens two more switches by two cams rotationally displaced so that two pulse trains are produced with a phase relationship indicating the sense of rotation. A circuit processes these pulse trains to produce UP pulse for one sense of rotation and DOWN pulses for the other sense of rotation. These pulses are used to correct the value in a selected store. The particular store to which the correction signal is applied is selected by axially displacing the operating button from the pushed-in position to the pulled-out position a predetermined number of times. A store selection circuit includes a counter which counts the pulls and selects the store in accordance with its count. The stores are divided into a first group comprising the hour of the day store, t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.