Floating threshold for data detection in a RFID tag

Details Floating threshold for data detection in a RFID tag Floating threshold for data detection in a RFID tag

2005-09-29

2010-10-19

Wu, Daniel (Department: 2612)

Communications: electrical

Selective

Interrogation response

C455S127200, C340S572100

Reexamination Certificate

active

07817015

ABSTRACT:
A radio frequency identification (RFID) tag is provided with a capability to adaptively initiate a floating RF threshold from the level of a raw RF signal detected during a communication session with a designated RFID reader, and to compare that threshold with the level of a baseband signal derived from the RF signal so as to reject RF interference including noise from other sources during the communication session. Preferably, the threshold is derived from the peak level of the detected RF signal on commencement of each communication from the reader during the session.

REFERENCES:
patent: 4779077 (1988-10-01), Lichtblau
patent: 4783658 (1988-11-01), Nakano et al.
patent: 5103209 (1992-04-01), Lizzi et al.
patent: 5300922 (1994-04-01), Stoffer
patent: 5613228 (1997-03-01), Tuttle et al.
patent: 5778309 (1998-07-01), Tuttle et al.
patent: 6101375 (2000-08-01), Tuttle et al.
patent: 6292654 (2001-09-01), Hessel et al.
patent: 6636146 (2003-10-01), Wehoski
patent: 6696935 (2004-02-01), Bonardi et al.
patent: 6735260 (2004-05-01), Eliezer et al.
patent: 7072618 (2006-07-01), Strutt
patent: 2005/0226312 (2005-10-01), Koslar et al.
patent: 2006/0022801 (2006-02-01), Husak et al.
patent: 2006/0238301 (2006-10-01), Wu et al.
patent: 2006/0244598 (2006-11-01), Hyde et al.
Eric Smith et al., “Closed Caption Decoder Theory of Operation”, http://www.brouhaha.com/˜eric/caption/ccthry5.txt, copyright 1995, 1996, 2003 (Dec. 29, 2003), p. 1-8.
Application Note 3671, Maxim Integrated Products, “Data Slicing Techniques or UHF ASK Receivers”, http://www.maxim-ic.com/an3671 copyright 2005, (Oct. 18, 2005), 10 pages.

Affiliated with

Also associated with

Rating

Floating threshold for data detection in a RFID tag does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Floating threshold for data detection in a RFID tag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Floating threshold for data detection in a RFID tag will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4172749