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:
Jul. 15, 2014
Filed:
Mar. 12, 2009
Rfid interrogator retransmitting command depending on collision situation and control method thereof
Chanwon Park, Daejeon, KR;
Sewon OH, Daejeon, KR;
Gilyoung Choi, Daejeon, KR;
Cheolsig Pyo, Daejeon, KR;
Jongsuk Chae, Daejeon, KR;
Josef Preishuber-pfluegl, Klangenfurt, AT;
David Tschische, Klagenfurt, AT;
Chanwon Park, Daejeon, KR;
Sewon Oh, Daejeon, KR;
Gilyoung Choi, Daejeon, KR;
Cheolsig Pyo, Daejeon, KR;
Jongsuk Chae, Daejeon, KR;
Josef Preishuber-Pfluegl, Klangenfurt, AT;
David Tschische, Klagenfurt, AT;
Electronics and Telecommuncations Research Institute, Daejeon, KR;
Cisc Semiconductor Design+Consulting GmbH, Klagenfurt, AT;
Abstract
As an RFID interrogator transmitting a command depending on a collision situation and a control method thereof, the RFID interrogator includes a collision diagnosis unit that analyzes data of a received signal received during a receive time in correspondence with a transmitted signal from an RF communication unit that can transmit and receive signal to and from one or more tag, verifies whether or not a collision occurs in the received signal, and diagnoses a collision type depending on an analysis result of the data of the received signal; and a collision resolution unit that can retransmit a command to the tag through the RF communication unit depending on the collision situation on the basis of whether or not occurrence of the collision or not and the collision type that are received from the collision diagnosis unit.