Infrared locator system

Details Infrared locator system Infrared locator system

1995-03-02

1997-05-06

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082549, 340572, 359154, 367199, H04Q 100

Patent

active

056275242

ABSTRACT:
A locator system comprising a number of unique portable IR transmitter units, each having a unique identity address consisting of a 16 bit data stream with two start bits and a stop bit, a number of fixed IR receiver units, each having a unique identity, and a central data processing computer. The transmitter units transmit in the vertical direction and in the horizontal direction simultaneously. Both the transmitter units and the receiver units contain programmable microprocessors, enabling the transmitter units to be addressed with one of up to 65,535 possible identities and enabling the receiver units to store multiple transmitter unit identities until polled by the data processing computer.

REFERENCES:
patent: 3439320 (1969-04-01), Ward
patent: 3805265 (1974-04-01), Lester
patent: 4225953 (1980-09-01), Simon
patent: 4275385 (1981-06-01), White
patent: 4601064 (1986-07-01), Shipley
patent: 4636950 (1987-01-01), Caswell
patent: 4649385 (1987-03-01), Aires
patent: 4837568 (1989-06-01), Snaper
patent: 4990892 (1991-02-01), Guest
patent: 5062151 (1991-10-01), Shipley

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