Advanced embedded code hopping system having master fixed code e

Details Advanced embedded code hopping system having master fixed code e Advanced embedded code hopping system having master fixed code e

1997-09-15

1999-06-22

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

380 23, 380 28, 380 9, 380 25, 380 29, 375203, 34082556, 34082569, 34082562, H04L 912, G08C 1702

Patent

active

059146672

ABSTRACT:
A system for monitoring and controlling an area comprising a controller for controlling system operational functions; at least one remote-control transmitter for transmitting system commands to the controller in a code word having a fixed word and a hopping word therein; the fixed word comprising at least one fixed data bit and the hopping word comprising at least one changing data bit, wherein the hopping word changes its binary value from transmission to transmission of the system commands; and, means for scrambling bits of the fixed word and bits of the hopping word within the code word.

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