System for transmitting subscription information and content to a mobile device
US6496928B1 · kind B1 · utility
167Cited by
3References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system controls access to broadcast messages received by a plurality of mobile devices. Selected mobile devices are provided with a broadcast encryption key (BEK). The broadcast messages are encrypted using the BEK prior to broadcasting so that the selected mobile devices containing the BEK can decrypt the broadcast messages. The broadcast messages are then broadcast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.