Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2011-06-28
2011-06-28
Wu, Daniel (Department: 2612)
Communications: electrical
Selective
Interrogation response
C340S572100, C340S572200, C340S572600
Reexamination Certificate
active
07969281
ABSTRACT:
A radio frequency identification data tag, a system and a method for reading the tag are described. The tag comprises a plurality of diffractive elements which are indicative of data carried by the tag. The diffractive elements have such shape that the dimension of the diffractive elements along one axis is substantially different than the dimension of the elements along the perpendicular axis. The diffractive elements are arranged in columns and rows in accordance with a predetermined layout scheme. In each column, the diffractive element is oriented in a direction other than the direction of the elements in the neighboring columns. The system for reading the tag comprises an array of transmitting (Tx) antennas for emitting an RF transmitted radiation signal at a predetermined polarization towards the tag, and an array of receiving (Rx) antennas configured for collecting re-radiated RF radiation produced by the tag at a polarization orthogonal to the polarization of the transmitting antenna. The system also includes an interrogator unit configured for generating the RF transmitted signal, and processing the RF received signal for reading the data carried tag. The reading is carried out by using amplitude information of SAR images based on the received signal for determining the arrangement of symbol elements in columns and phase information of the SAR images for determining the arrangement of the symbol elements in rows.
REFERENCES:
patent: 3691557 (1972-09-01), Constant
patent: 4661983 (1987-04-01), Knop
patent: 4857891 (1989-08-01), Heltemes
patent: 5268043 (1993-12-01), McCowen
patent: 5354521 (1994-10-01), Goodman
patent: 5477219 (1995-12-01), Zarembo et al.
patent: 5554974 (1996-09-01), Brady et al.
patent: 6229445 (2001-05-01), Wack
patent: 6529154 (2003-03-01), Schramm, Jr. et al.
patent: 6997388 (2006-02-01), Yogev et al.
patent: 7068170 (2006-06-01), Green
patent: 7283053 (2007-10-01), Mickle et al.
patent: 7353994 (2008-04-01), Farrall et al.
patent: 7623624 (2009-11-01), Moon et al.
patent: 2004/0159708 (2004-08-01), Yogev et al.
patent: 2005/0280504 (2005-12-01), Pettus
patent: 2005/0280539 (2005-12-01), Pettus
patent: 2006/0160208 (2006-07-01), Putnam et al.
patent: 1065623 (2001-01-01), None
patent: 1352818 (1974-05-01), None
International Search Report and Written Opinion, mailed Jan. 18, 2008, from International Application No. PCT/IL2007/001119, filed on Sep. 11, 2007.
International Preliminary Report on Patentability, mailed Jan. 14, 2009, from International Application No. PCT/IL2007/001119, filed on Sep. 11, 2007.
Mensa, D. L., “High Resolution Radar Cross Section Imaging (2nd ed.),” Boston: Artech House, 1991, pp. 139-185.
Soumekh, M., “Synthetic Aperture Radar Signal Processing,” New York: John Wiley & Sons, 1999, pp. xix-xxii, 1-2, 47-49.
Kofman Semion
Meerfeld Yaron
Sandler Maya
Barakat Mohamed
Houston Eliseeva LLP
Inksure RF Inc.
Wu Daniel
LandOfFree
Method and apparatus for identification of radio frequency 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 Method and apparatus for identification of radio frequency tag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for identification of radio frequency tag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2685175