APPARATUS AND METHOD FOR DEMODULATING SUB-CARRIER TAG SIGNAL IN RFID READER

PURPOSE: An apparatus and a method for demodulating a sub-carrier tag signal in an RFID reader are provided to supply a high reliability about the demodulation of tag signal even though offset distortion noise is generated. CONSTITUTION: An edge signal generating unit(120) receives a tag signal of a...

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Bibliographic Details
Main Authors CHAE, JONG SUK, CHOI, GIL YOUNG, CHOI, WON KYU, LEE, DONG HAN, BAE, JI HOON, QUAN CHENG HAO
Format Patent
LanguageEnglish
Published 23.02.2010
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
TRANSMISSION
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Summary:PURPOSE: An apparatus and a method for demodulating a sub-carrier tag signal in an RFID reader are provided to supply a high reliability about the demodulation of tag signal even though offset distortion noise is generated. CONSTITUTION: An edge signal generating unit(120) receives a tag signal of a subcarrier type. The signal generating unit detects the location from the tag signal where a phase reverse is performed. The edge signal generating unit generates an edge signal on the detected position. An edge information extracting unit(140) extracts the edge information from the edge signal. A decoding unit(150) decodes the tag signal by using the extracted edge information.
Bibliography:Application Number: KR20080079337