Multiple broadcast facility
US6690943B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Oct 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A broadcast system for communicating multiple simultaneous broadcast messages in a telecommunications system is provided, where the telecommunications system has at least one fixed terminal for communication with one or more portable terminals. The broadcast system includes means for transmitting first messages from the or each fixed terminal for reception by portable terminals in the reception area of that fixed terminal, each first message including information that specifies channels, selected for that fixed terminal, which will be used to convey an associated broadcast message. A control means is provided for causing the or each portable terminal to receive on the specified broadcast message channels. The transmitter means then transmits from the fixed terminal the broadcast messages on the said specified broadcast channels for substantially simultaneous reception and reproduction of a broadcast message, such as an audio broadcast message, by the or each portable terminal. Different portable terminals may receive different broadcast messages. The broadcast message channels are connectionless. The portable terminals may also roam into areas serviced by other fixed terminals and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.