Remote activation of mobile telephone by paging channel phantom numbers
US5774804A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Apr 4, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a system of multiple radiotelephones, such as mobile telephones, wherein each of the telephones is operative with a paging channel by which a calling number is applied to the telephones enabling the respective telephones to respond to their respective channels, the paging channel is utilized for activating individual ones of the telephones. A set of calling numbers is reserved and not employed for calling numbers, but is stored within a memory of each of the telephones. The reserved calling numbers serve as a glossary for encoding words of a command message to be transmitted via the paging channel, and also enable a decoding at each telephone of the encoded message. The command message supplies a designated calling number to a specified one of the mobile telephones, the specified telephone being identified by its electronic serial number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.