Remote control systems
US4189713A · kind A · utility
25Cited by
11References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1976 |
| Grant date | Feb 19, 1980 |
| Priority date | — |
| Expiry date | Jul 12, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C25/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An acoustic remote control link transmits different value bits as pulses containing different numbers of carrier cycles and identifies those bits on reception on the basis of the received pulses containing numbers of carrier cycles in one or other of two ranges. Each word transmitted is accompanied by a word of inverse digital value, the two words being compared on reception. A received pulse is deemed to have finished when a gap of given duration exists in the carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.