Infrared transmitter of coded message having fixed code and larg

Details Infrared transmitter of coded message having fixed code and larg Infrared transmitter of coded message having fixed code and larg

1987-10-29

1989-07-18

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455619, H04B 900

Patent

active

048500461

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).

REFERENCES:
patent: 4628541 (1986-12-01), Beavers
patent: 4665397 (1987-05-01), Pinnon
patent: 4703450 (1987-10-01), Sueyoshi et al.

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