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:
Feb. 03, 2015
Filed:
Apr. 20, 2010
Hirohito Mukai, Tokyo, JP;
Takashi Fukagawa, Kanagawa, JP;
Yoichi Nakagawa, Tokyo, JP;
Abstract
Disclosed are a radio terminal device and the like, which achieve an improvement in the accuracy of ranging between a UWB reader and a UWB tag regardless of whether an active method or a semi-passive method. In a terminal (), a timing control unit () outputs, to a transmission amplifier (), a control signal for performing on-off control such that on the basis of the reception timing of a pulse signal transmitted from a base station () and a representative value of a circuit delay time required from when a reception pulse signal is received until a transmission pulse signal generated in response to a detection signal of the reception pulse signal is transmitted, the transmission amplifier () amplifies a reradiation pulse generated in response to a detection signal of the pulse signal transmitted from the base station (); and a re-reradiation pulse generated in response to a detection signal of the reradiation pulse.