System and method for communicating with plural remote transmitter
US5982808A · kind A · utility
66Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/103
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for communicating with plural remote transmitters in which the transmitters send messages without a common synchronization source or polling by a controlling receiver. In one embodiment, the system uses the time position of frequency chirp signals to encode the identity and/or other information sent from the receiver. The system may use relatively low cost transmitters because the transmitters do not need to have a message or clocking signal receiving capability and the internal clocking signal source within the transmitter may be a relatively inexpensive device or circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.