Control signal coding and detection in the audible and inaudible

Details Control signal coding and detection in the audible and inaudible Control signal coding and detection in the audible and inaudible

1996-02-20

2000-10-17

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

340906, H04Q 100

Patent

active

061338494

ABSTRACT:
A coded siren sound generator and a corresponding detector module are provided which allow uniquely coded tone patterns generated by the coded siren to be detected and processed such that only specific sirens will activate the detector module. In one embodiment, only a few codewords are sent by the transmitter. The receiver looks for the occurrence of one or more of these selected codewords and takes a predetermined action based on programming of the detector. The system may operate at audible or ultrasonic frequencies. In accordance with a further embodiment, audio (either audible or ultrasonic) "packets" are sent by the transmitter These packets contain sufficient information to uniquely identify the vehicle sending the packet and allow the vehicle to send commands and data to the detector. The commands and data may be for purposes such as requesting emergency pre-emption for a left turn at an intersection, requesting straight ahead pre-emption, etc.

REFERENCES:
patent: 2355607 (1944-08-01), Shepherd
patent: 3784970 (1974-01-01), Simpkin
patent: 3881169 (1975-04-01), Malach
patent: 3992656 (1976-11-01), Joy
patent: 4602357 (1986-07-01), Yang et al.
patent: 4806931 (1989-02-01), Nelson
patent: 4857921 (1989-08-01), McBride
patent: 4864297 (1989-09-01), Shaw et al.
patent: 4914434 (1990-04-01), Morgan
patent: 5014052 (1991-05-01), Obeck
patent: 5172113 (1992-12-01), Hamer
patent: 5677684 (1997-10-01), McArthur

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