Coding system for multiple transmitters and a single receiver for a garage door opener
US4750118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1985 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Oct 29, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00928
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention comprises a system for remote control of garage doors and other devices wherein an extremely large number of codes are available for remote transmitters for operating the garage operator and wherein each transmitter has its own unique and permanent nonuser changeable code. The receiver at the garage door operator is capable of storing and remembering a number of different codes corresponding to different transmitters such that the receiver can be programmed so as to actuated by more than one transmitted code thus allowing two or more transmitters to actuate the same garage door operator and wherein the receiver stores the valid codes for the different transmitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.