Intrusion detector operating mode selection system

Details Intrusion detector operating mode selection system Intrusion detector operating mode selection system

1994-05-25

1996-06-04

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Testing, monitoring, or calibrating

340508, 340517, 340541, H04B 1700

Patent

active

055240992

ABSTRACT:
An intrusion detector operating mode selection circuit sets an intrusion detector operating mode responsive to an encoded acoustic signal. An acoustic signal decoder receives an encoded acoustic signal and generates a mode selection signal in response thereto. The encoded acoustic signal is a plurality of spaced-apart acoustic pulses encoded by the relative inter-pulse timing of the spaced-apart pulses. A mode of the intrusion detector is set responsive to the mode selection signal.

REFERENCES:
patent: 4367458 (1983-01-01), Hackett
patent: 4987402 (1991-01-01), Nykerk
patent: 5109216 (1992-04-01), Yarbrough et al.
GlassTrek Instruction Manual (one page), Pirotec Technologies.

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