Radio selective calling receiver and receipt frequency search control method therefor
US6426691B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1999 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Oct 27, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B5/229
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A radio selective calling receiver includes a storage 105 storing a plurality of frequencies each corresponding to a particular area in which a service is available. A synchronized frequency storage 112 stores, frequency by frequency, the numbers of times of synchronization set up at consecutive sampling times together with the sampling times. When frequency search begins, a receipt frequency control 110 sequentially searches the frequencies in accordance with the number of times of synchronization set up at a sampling time closest to the time at which the search has begun. The receiver is capable reducing a period of time necessary for a frequency search without forcing the user of the receiver to perform any special setting operation. This reduces the probability of missing a call meant for the receiver and saves power to be allocated to frequency search.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.