The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1998
Filed:
Jul. 29, 1996
Tadahiro Ohkura, Johyoh, JP;
Toshiyuki Yoshida, Yokohama, JP;
Mitsuru Kainuma, Chigasaki, JP;
Kazuo Aoki, Yokohama, JP;
Otax Co., Ltd., , JP;
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.