04959810 is referenced by 277 patents and cites 27 patents.

The universal remote control system comprises data processor, input device including a keyboard and a keyboard circuit connected to the data processor, signal output device including circuitry for generating infrared light codes connected to the data processor means, a memory including a battery backed, non-volatile RAM only and no ROM for storing (a) a set of instructions and (b) a library of code data for enabling the infrared light generating circuitry to generate specific infrared codes, the RAM being coupled to the data processor, and a data coupling device including terminals coupled to the CPU for enabling new code data to be supplied from outside the system to, or retrieved from, the RAM through the terminals and the CPU.

The RAM in the ROM-less data processing means is loaded by carrying out the following steps: (a) disabling the central processing unit; (b) connecting a separate microprocessor system to said RAM; (c) transferring instructions and/or data to said RAM; and (d) re-enabling the central processing unit to enable the central processing unit to execute the instructions so transferred.

Title
Universal remote control device
Application Number
109336
Publication Number
4959810
Application Date
December 2, 1987
Publication Date
September 25, 1990
Inventor
Avram S Grossman
Santa Ana
CA, US
Louis S Jansky
Long Beach
CA, US
Richard E Ellis
Garden Grove
CA, US
Paul V Darbee
Santa Ana
CA, US
Agent
Thomas R Vigil
Assignee
Universal Electronics
CA, US
IPC
H04Q 1/00
G08C 19/00
H04B 9/00
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