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Universal remote control device

  • US 4,959,810 A
  • Filed: 12/02/1987
  • Issued: 09/25/1990
  • Est. Priority Date: 10/14/1987
  • Status: Expired due to Term
First Claim
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1. In a universal remote control system having input means for inputting commands, signal output means for supplying an infrared signal to a controlled device and a central processing unit (CPU) coupled to said input means and to said signal output means, the improvement residing in said system comprising no ROM, a single non-volatile, read-write RAM coupled to said central processing unit and data coupling means including terminal means coupled to the CPU for enabling new code data to be supplied from outside the system to, or retrieved from, said RAM through said terminal means and the CPU.

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