Method and apparatus for restricting operation of cellular telephones to well delineated geographical areas
US6011973A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1996 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Dec 5, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and apparatus for restricting operation of a cellular telephone to well delineated geographical areas. The cellular telephone is equipped with a location device for ascertaining the current geographical location of the cellular telephone. The ascertained geographical location is compared with information pertaining to the allowability of operation of cellular telephones in various geographical locations. A determination is made as to whether the cellular telephone is allowed to operate in its current geographical location. The cellular telephone accordingly enables or disables transmitting by the transceiver of the cellular telephone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.