Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1994-08-02
1996-05-07
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 59, 342450, 340539, H04Q 720, H04Q 722, G01S 302
Patent
active
055154190
ABSTRACT:
A tracking system for tracking a portable or mobile phone unit utilizes an array of fixed wireless signal transceivers forming part of a wireless telephone system. The phone unit includes a processor for generating an emergency signal on detection of an emergency condition and transmitting the emergency signal to a remote monitoring station via the wireless telephone network. The emergency signal includes identifying information for identifying the phone unit, as well as identifying or control channel signals received by the phone unit from adjacent wireless signal transceivers which are retransmitted as part of the emergency signal to be used at the remote monitoring station to compute an approximate location of the phone unit.
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"Stolen Cars Phone Home", Machine Design, vol. 62, No. 18, Sep. 6, 1990.
Chernoff Michael B.
Kuntz Curtis
Trackmobile
LandOfFree
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