H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/1
H04B 1/20 (2006.01)
Patent
CA 1314936
PHA.40529 13-2-1989 ABSTRACT: Universal remote control transmitter with simplified device identification. A permanent non-erasable memory stores formatt- ing data and command bit patterns for a plurality of devices of different categories manufactured by different manufacturers to be controlled by the remote control transmitter incorporating the memory. To select the correct format, the user activates an enter initiate key, thereafter a key to indicate the category of the selected device, and thereafter two digits which together signify the manufacturer and model number. The keyboard output signals resulting from activation of the keys are stored in RAM in the microprocessor controlling the remote control transmitter's operation. The stored values in RAM constitute an address for the memory. Under microprocessor control, the data read out from memory is then applied to the transmitter driver circuit to cause the properly formatted device control signal to be transmitted.
592457
Mcconnell Donald P.
Mcintyre William R.
Fetherstonhaugh & Co.
North American Philips Corporation
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