Access code processing for a security system

Details Access code processing for a security system Access code processing for a security system

1997-05-15

1999-05-25

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082534, 340541, 380 23, G06F 704

Patent

active

059072881

ABSTRACT:
A security system includes a control panel for controlling the operation of the security system and a keypad for communication with the control panel by entry of access codes by key-presses of keys on the keypad of the keypad controller. The control panel includes a means for examining a sequence of key-presses for a match between a first defined number of consecutive key-presses and access codes programmed in the control panel. The control panel examines the sequence of key-presses after a second defined number of key-presses and if no match is found, continues to examine the most recent first defined number of key-presses after each further individual key-press until a match is found.

REFERENCES:
patent: 3866173 (1975-02-01), Moorman et al.
patent: 4804278 (1989-02-01), Gotou et al.
patent: 4931769 (1990-06-01), Phillips et al.

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