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Remote control signal transmitter capable of setting custom codes individually alloted to a plurality of controlled instruments

  • US 4,412,218 A
  • Filed: 02/17/1981
  • Issued: 10/25/1983
  • Est. Priority Date: 02/26/1980
  • Status: Expired due to Term
First Claim
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1. A transmitter comprising generating means for generating cyclically recurring scan signals, scan signal output terminals through which said respective scan signals are output, a key matrix circuit means having a plurality of column lines and a plurality of row lines connected to said respective scan signal output terminals, key input terminals connected to said respective column lines, a custom code selection terminal, custom code designation means for selectively connecting said scan signal output terminals to said custom code selection terminal in accordance with a custom code corresponding to an identity of an instrument to be controlled, and output means for outputting a custom code derived from said custom code selection terminal and key data derived from said key matrix circuit.

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