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:
May. 08, 2012
Filed:
Sep. 29, 2008
Shin-yao Perng, Hsinchu, TW;
Ta-yung Lee, Hsinchu, TW;
Chia-chin Yu, Hsinchu, TW;
Jun-ting Shiau, Hsinchu, TW;
Shin-Yao Perng, Hsinchu, TW;
Ta-Yung Lee, Hsinchu, TW;
Chia-Chin Yu, Hsinchu, TW;
Jun-Ting Shiau, Hsinchu, TW;
Mitac Technology Corp., Hsinchu, TW;
Abstract
A radio frequency identification (RFID) reader includes a plurality of signal antennas, which are respectively arranged in directions that are not parallel to and co-linear with each other. Each of the signal antennas has a predetermined antenna field pattern and operates with a predetermined carrier wave frequency. A wireless receiver is connected to the signal antennas. A signal conversion unit is connected to the wireless receiver. A frequency generator generates the carrier wave frequency to the signal antenna. A microprocessor is connected to the signal conversion unit and the frequency generator.