Apparatus and method for receiving tag signal in mobile RFID...

Details Apparatus and method for receiving tag signal in mobile RFID... Apparatus and method for receiving tag signal in mobile RFID...

2006-09-27

2010-10-26

Brown, Vernal U (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010300, C340S010500

Reexamination Certificate

active

07821378

ABSTRACT:
Provided are a tag signal receiving apparatus that can perform digital Amplitude Shift Keying (ASK) demodulation onto signals received in a tag, decode the demodulated tag signal in synchronization, and acquire tag data in a mobile RFID reader, and a method thereof. The tag signal receiving apparatus includes: a digital demodulating block for performing ASK demodulation onto a digital tag signal received through a reader antenna and converted into a digital tag signal in an analog-to-digital (AD) converter; and a decoding block for detecting edge position information of the demodulated tag signal by performing accumulation and decoding the demodulated tag signal by using the detected edge position information. The digital demodulating block includes a channel level comparator, a phase inverter, a signal converter; and an adder. The decoding block includes an edge information detector, a correlator, and a bit data decider.

REFERENCES:
patent: 6765959 (2004-07-01), Tanaka et al.
patent: 2004/0203478 (2004-10-01), Scott
patent: 10209912 (1998-08-01), None
patent: 1020050041950 (2005-05-01), None

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