Correcting device for an electronic watch
US3931703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Jan 18, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G5/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for correcting running of an electronic watch comprises two contactors acting on respective bistable circuits in turn acting on a combinatory circuit controlling a counter which provides binary correction information to an inhibitor circuit. The latter is arranged to inhibit a number of pulses of a pulse generator having a predetermined nominal frequency above a given value, to set the frequency at said given value prior to division to provide accurate clock pulses fed to a device for indicating the time. Successive actuation of respective contactors corresponds to increasing or decreasing the number of inhibited pulses from an approximate number stored in a programmable memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.