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:
Dec. 01, 2009
Filed:
Dec. 20, 2006
Ji Hwan Choi, Seoul, KR;
Hyuckjae Lee, Daejeon, KR;
Dongwook Lee, Gyeongsangbuk-do, KR;
Hyoungsuk Jeon, Seoul, KR;
Hoiyoon Jung, Seoul, KR;
Ji Hwan Choi, Seoul, KR;
Hyuckjae Lee, Daejeon, KR;
Dongwook Lee, Gyeongsangbuk-do, KR;
Hyoungsuk Jeon, Seoul, KR;
Hoiyoon Jung, Seoul, KR;
Research and Industrial Cooperation Group, Daejeon, KR;
Abstract
A bi-slot tree based tag identification method in RFID systems includes (a) transmitting an inquiry of (n−1) bits to each tag at the reader; (b) deciding whether the inquiry of (n−1) bits are identical with first (n−1) bits of each tag ID when receiving the inquiry of (n−1) bits at each tag within a readable range of the reader; (c) transmitting each tag ID by one bit from (n+1)bit to last bit thereof to the reader through different time slots based on nbit value of each tag ID at the tags whose first (n−1) bits are identical with the inquiry of (n−1) bits; and (d) at the reader, checking whether there is a collision among the tag IDs received from the tags and identifying each tag ID of the tags based on the check result.