Infrared transmitter of coded message having fixed code and large number of combinations
US4850046A · kind A · utility
24Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1987 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Oct 29, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C19/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An infrared transmitter of coded message is provided having a fixed code and large number of combinations particularly but not solely for use in the automobile industry. The transmitter comprises a series programmable electronic memory (1), the content of which is addressed by a pulse transmitter (2), an oscillator or timer, the content of the memory (1) being supplied to a pulse generator (3) supplying an amplifier (4), the output of which is transmitted to a transmitter diode (5), the content of the memory (1) being supplied, in addition, to an end of message blocking device (6) controlling the reading pulse transmitter (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.