Coded data generation or conversion – Code generator or transmitter – Transmitter for remote control signal
Patent
1995-11-28
1997-09-23
Hofsass, Jeffery
Coded data generation or conversion
Code generator or transmitter
Transmitter for remote control signal
341177, 341178, 34082557, G08C 1912
Patent
active
056709587
ABSTRACT:
The present infra-red remote control transmitter understands external formats, and those with toggle-bits and different carrier frequency ranges, and transmits signals in these data formats to the appropriate devices, with or without a toggle-bit. The remote control receives and transmits infra-red formats and comprises an infra-red receiver with a microprocessor and/or with two carrier frequency oscillators to generate two modulation frequencies, in which case it is provided with two infra-red receivers. An externally formatted data word with toggle-bits is subjected, after being read at least twice, to a comparison inside the microprocessor, from which the presence of toggle-bits, their number, position and the carrier frequency of the data word are found.
REFERENCES:
patent: 4623887 (1986-11-01), Welles, II
patent: 4905279 (1990-02-01), Nishio
patent: 5142398 (1992-08-01), Heep
Eigeldinger Norbert
Hauser Eberhard
Deutsche Thomson Brandt GmbH
Emanuel Peter M.
Hill Andrew
Hofsass Jeffery
Tripoli Joseph S.
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