Universal transmitter
US6486795B1 · kind B1 · utility
58Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C2201/92
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A universal remote control radio frequency transmitter for use with garage door operators, gate operators and other barrier movement operators is programmable through the use of external switches. The same switches are used after programming for causing the transmitter to transmit an RF signal at about the selected frequency and with a code corresponding to the programmed code. A plurality of RF frequencies are generated by a single RF circuit and a single loop antenna. The selected frequency is determined by digital controller logic and PIN diode shorting in and out selected reactive elements in the RF circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.