Electronic watch
US4188776A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1977 |
| Grant date | Feb 19, 1980 |
| Priority date | — |
| Expiry date | Dec 13, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G13/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and circuit for selecting a function of a watch. A predetermined number and a predetermined sequence of electrical code signals are user generated by two switches which are located on the watch. The code signals correspond to at least one function of the watch. The sequence of code signals is stored and the code signals occurring within a predetermined time period are counted. The count of the code signals occurring within the predetermined time period is compared to the predetermined number and the stored sequence of code signals are decoded only when the count of the code signals equals the predetermined number within the predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.