Radio searching system
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United States of America Patent
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-
Nov 10, 1998
Issued Date -
N/A
app pub date -
Jul 29, 1996
filing date -
Oct 1, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a radio searching system, a present position of an object under search such as a mentally handicapped aged person and a mountain climber is correctly defined and displayed by utilizing the characteristics of the radio signals. The radio searching system is comprised of a portable radio unit for transmitting a radio signal having a predetermined frequency, searching radio units provided at a plurality of searching points, for receiving the radio signal transmitted from the portable radio unit, a position defining unit for defining a position of an object under search on which the portable radio unit is mounted based on the transmission direction of the radio signal received by the searching radio unit, and an image display unit for displaying on an image, the position of the object under search defined by the position defining unit.
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