Electrical appliance control
US4638299A · kind A · utility
76Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1983 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Mar 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/121
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical appliance remote control system comprises a transmitter supplying digital control messages onto a power main and a receiver for receiving those messages to activate an appliances accordingly. Each message comprises words each of which is transmitted twice. A repeater is coupled to the main to receive the first occurrence of the word and to retransmit that word onto the main, or onto another main, in the period containing the second occurrence of the word.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.