IR FM modem with flash modulation
US5610947A · kind A · utility
7Cited by
16References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1994 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Oct 14, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4904
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Biphase or FM encoding is combined with Flash modulation in infrared (IR) communication. By shrinking the coded pulse width in the modulation process, power dissipation is effectively reduced to the point where FM encoding can be advantageously adapted to IR communication in a synchronous communication system. Noise filtering is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.