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:
Aug. 25, 2015
Filed:
Sep. 06, 2012
Jae-young Jung, Daejeon, KR;
Won Kyu Choi, Daejeon, KR;
Kyu Won Han, Seoul, KR;
Chan-won Park, Daejeon, KR;
Jong-suk Chae, Daejeon, KR;
Cheol Sig Pyo, Daejeon, KR;
Jae-young Jung, Daejeon, KR;
Won Kyu Choi, Daejeon, KR;
Kyu Won Han, Seoul, KR;
Chan-Won Park, Daejeon, KR;
Jong-Suk Chae, Daejeon, KR;
Cheol Sig Pyo, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
A radio frequency identification (RFID) smart shelf system manages a product through communication with an RFID tag that is attached to the product on a shelf, and includes an RFID reader, a plurality of reader antennas, and an RF switch that is connected between the RFID reader and the plurality of reader antennas. The RF switch periodically varies a phase difference between RF signals of a portion of a plurality of output connection ports that set a connection to each of the plurality of reader antennas.