Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1994-10-12
2000-09-19
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
34235709, 342419, G01S 502, H04B 7185
Patent
active
061219223
ABSTRACT:
A tracking system uses a miniaturized geographic position determination and communications module, preferably in the form of a thin capsule, enabling the enclosure to be hidden in very small spaces, including personal concealment. Electronic circuitry and a thin, rechargeable battery are contained within the enclosure, the circuitry including a global positioning satellite receiver, a communications transceiver, and a controller. The controller causes the global positioning satellite receiver to receive and decode a signal relating to the geographic position of the module; cause the communications transmitter to communicate the geographic position information to a remote location; and disable the global positioning satellite receiver and communications transceiver when not in use so as to conserve power. The geographic position information may be communicated to a remote location either in response to a carrier activating a panic function or after receiving a request from a remote location which commences the transmission in response to the request.
REFERENCES:
patent: 5223844 (1993-06-01), Mansell et al.
patent: 5266958 (1993-11-01), Durboraw, III
patent: 5392052 (1995-02-01), Eberwine
J. Hoshen, J. Sennott, M. Winkler; Keeping Tabs on Criminals; IEEE Spectrum; Feb. 1995; pp. 26-32.
Blum Theodore M.
Veridian ERIM International, Inc.
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