System and method for decoding reset signals of a timepiece for providing internal control
US3979681A · kind A · utility
3Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1974 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Nov 27, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K21/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A solid state timepiece having a chain of series connected counters with clock pulses being applied to the first counter in the chain. A reset system is responsive to reset signals and is coupled to the counters for selective resetting of the counters upon application of predetermined reset signals. A decoder system independent of the resetting of the counters detects the state of the reset signals during a predetermined time duration and produces a control signal upon application of selected reset signal states. A control system provides internal control of the timepiece only upon application of the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.