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. 13, 2014
Filed:
Jul. 08, 2010
Ji Hoon Bae, Daejeon, KR;
Dong Han Lee, Daejeon, KR;
Kwang Soo Cho, Daejeon, KR;
Won Kyu Choi, Daejeon, KR;
Man Sik Park, Daejeon, KR;
Chan Won Park, Daejeon, KR;
Cheng Hao Quan, Daejeon, KR;
Gil Young Choi, Daejeon, KR;
Jong Suk Chae, Daejeon, KR;
Ji Hoon Bae, Daejeon, KR;
Dong Han Lee, Daejeon, KR;
Kwang Soo Cho, Daejeon, KR;
Won Kyu Choi, Daejeon, KR;
Man Sik Park, Daejeon, KR;
Chan Won Park, Daejeon, KR;
Cheng Hao Quan, Daejeon, KR;
Gil Young Choi, Daejeon, KR;
Jong Suk Chae, Daejeon, KR;
Abstract
Provided is a symbol synchronization apparatus and method of a passive RFID reader. The symbol synchronization apparatus includes: an edge clock detector generating edge clocks by detecting phase inversion positions of a received signal; a preamble detector detecting a preamble section by analyzing the generation times of the edge clocks; a symbol decision time extractor extracting a symbol decision time by averaging distances between the edge clocks consecutively generated in the preamble section, when the preamble section is detected; and a symbol decider deciding a symbol by analyzing the magnitude of the received signal, when the time reaches the symbol decision time.