Portable miniature type information treating device
US3937004A · kind A · utility
60Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1974 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | May 24, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/903
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic timepiece, used as a pager watch, has a speaker for emitting an alarm sound at a preset time and also for reproducing an external call signal intercepted by a receiver for incoming electromagnetic waves. The receiver may be maintained normally inactive, being periodically activated for short time intervals under the control of a frequency divider in the output of a crystal oscillator serving to drive an electro-optical display. Sensors responsive to abnormal ambient conditions, e.g. temperature or blood pressure of the wearer, may also operate the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.