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:
Jan. 13, 2015
Filed:
Dec. 20, 2011
Applicants:
Ho Sun Yoon, Daejeon, KR;
Ho Yong Ryu, Daejeon, KR;
Inventors:
Ho Sun Yoon, Daejeon, KR;
Ho Yong Ryu, Daejeon, KR;
Assignee:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01); G08B 13/14 (2006.01); H04L 9/32 (2006.01); H04Q 1/30 (2006.01); G06Q 20/00 (2012.01); G06F 12/14 (2006.01); G06K 19/073 (2006.01);
U.S. Cl.
CPC ...
G06K 19/07309 (2013.01);
Abstract
Provided is a radio frequency identification (RFID) tag device. The RFID tag device includes memory which stores ID information and a second count value, and a certification unit which performs a certification process according to a keyed hash value received from the outside and a result of a comparison between first and second count values received from the outside, and adjusts the second count value.