Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-07-26
2005-07-26
Tweel, Jr., John (Department: 2636)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S572400, C310S31300R
Reexamination Certificate
active
06922146
ABSTRACT:
A radio frequency (RF) data carrier and method and system for reading information stored in the data carrier are presented. The data carrier comprises a collection of circuitries defining together a predetermined information code. Each circuitry includes: (a) a code circuit configured to have a certain RF frequency response to a powering signal and thus defining a certain symbol of the predetermined information code, and (b) a delay circuit configured to provide a phase delay of a predetermined value to said powering signal associated with the respective code circuit to thereby define a location of this symbol in the information code. The data carrier further comprises a power unit operable to produce said powering signal to actuate the delay circuit. The power unit comprises at least one inductance coil responsive to alternation of an external magnetic field for generating said powering signal as an electromotive force voltage as a result of intersecting windings of the coil with magnetic flux lines of the external magnetic field.
REFERENCES:
patent: 5446447 (1995-08-01), Carney et al.
patent: 5574470 (1996-11-01), de Vall
patent: 5604485 (1997-02-01), Lauro et al.
patent: 5625341 (1997-04-01), Giles et al.
patent: 5680106 (1997-10-01), Schrott et al.
patent: 5682143 (1997-10-01), Brady et al.
patent: 5691698 (1997-11-01), Scholl et al.
patent: 5995006 (1999-11-01), Walsh
patent: 6100804 (2000-08-01), Brady et al.
patent: 6104311 (2000-08-01), Lastinger
patent: 6304169 (2001-10-01), Blama et al.
patent: 6346884 (2002-02-01), Uozumi et al.
patent: 6424263 (2002-07-01), Lee et al.
patent: 6441740 (2002-08-01), Brady et al.
patent: 6455979 (2002-09-01), Reindl et al.
patent: RE37956 (2003-01-01), Blama
patent: 6788204 (2004-09-01), Ianelli et al.
patent: 100 52 689 (2002-05-01), None
“Active and Passive RFID”, Savi Technology, White Paper, Jan. 2002, pp. 1-11.
ExpressTrak™ Chipless RFID “Increase consumer convenience with ExpressTrak™ Chipless RFID”, Checkpoint Systems, Inc., 2002, http://www.checkpointsystems.com/downloads/pdf/es105.pdf.
ExpressTrak™ Chipless RFID, “Enhance POS operations with ExpressTrak™ Chipless RFID”, Checkpoint Systems Inc., 2002, http://www.checkpointsystems.com/downloads/pdf/es102.pdf.
Vincett et al., “Electrical and Photoelectrical Transport Properties of Langmuir-Blodgett Films and a Discussion of Possible Device Applications”, Thin Solid Films, 68 (1980), pp. 135-171.
Dukler Shlomo
Yogev Amnon
Inksure RF Inc.
Tweel , Jr. John
LandOfFree
Radio frequency data carrier and system for reading data... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radio frequency data carrier and system for reading data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio frequency data carrier and system for reading data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3428265