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. 07, 2012
Filed:
Sep. 11, 2007
Hsu-hung Chang, Tai-Chung, TW;
Hsu-Hung Chang, Tai-Chung, TW;
MStar Semiconductor, Inc., ChuPei, Hsin-Chu Hsien, TW;
Abstract
An RFID interrogator includes a signal processing module for converting a transmission signal transmitted from an RFID tag into an input signal; a first matched filter coupled to the signal processing module for generating a first matched signal according to the input signal and a first predetermined signal pattern; a second matched filter coupled to the signal processing module for generating a second matched signal according to the input signal and a second predetermined signal pattern; a control unit for generating a control signal according to the input signal; and a decision unit, coupled to the first matched filter, the second matched filter and the control unit, for comparing the first matched signal with the second matched signal according to the control signal to generate a read-back signal.