Time sound generating device
US4293940A · kind A · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1978 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Jun 5, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time sound generating device which generates a time announcement sound by detecting a change of time from a portion of a display element driving signal supplied to a time display element of a digital electronic clock and by driving an audio sound signal source by the detected time signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.