Serial code format optimized for remote control applications over noisy communications channel
US5572555A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Jun 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitted data stream in a remote control system is a serial data stream having a synchronization sequence and a data sequence. The data sequence is encoded into a symbol comprised of a series of data bits wherein a 110 may represent a logic 1 and a 011 may represent a logic 0. A self adaptive filter adjusts its gain and offset to determine the duration of one bit. Providing a serial code format wherein the synchronization sequence has a smiller duty cycle as the duty cycle of a symbol aids the self adaptive filter to set its threshold switching level accurately and quickly, thus aiding the receiver to decode the transmitted data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.