Radio frequency controlled light system
US4355309A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Sep 8, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/19
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A light control system includes a transmitting unit (10) having a receiver unit address (22) and an output address switch (24) for pulse modulating a digitally encoded transmission signal broadcast by a radio frequency oscillator (26). A remotely located receiving unit (28) controls the power supply to an electrical load (42) such as an electrical light in response to digitally encoded data signals transmitted by said transmitting unit (10). The receiving unit (28) includes a radio frequency receiver (32) to apply a signal to digital transmission decoders (34) and a receiver unit address decoder (36). Upon detecting a transmitted signal encoder for said receiving unit (28) an output latch (38) sets an opto-isolated relay circuit (40) to connect or disconnect power to the electrical load (42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.