Watch pager system and communication protocol
US5537407A · kind A · utility
21Cited by
13References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 21, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Jan 21, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Battery saving can be achieved in a selective call receiver (i.e. in a radio pager) by only periodically activating the receiver. The activation rate or time cycle of the receiver determines how often the receiver can receive messages and the amount of time between the periods when messages can be received. The present invention provides a selective call receiver which has variable cycle rates. A system includes a plurality of receivers, some of which have a first cycle rate and some of which have a second cycle rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.