Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2005-11-08
2005-11-08
Holloway, III, Edwin C. (Department: 2635)
Communications: electrical
Selective
Interrogation response
C370S314000, C370S311000, C370S336000
Reexamination Certificate
active
06963270
ABSTRACT:
Arbitration of multiple transponders, such as RFID tags, occurs in an interrogation field. The arbitration process is custom-tailored for individual applications, under software control, by the transponder reader or tag reader. Different wake-up slots are calculated for each tag during successive transmission cycles based upon the tag ID and the transmission cycle number. The tag reader may send a special fast read command to the tag which includes a read request and communications control parameters including the number of time slots for transponder communications, the number of transmissions that an individual transponder is allowed to issue, and the data rate at which the reader communicates to the transponder. The tag reader may also send a special command to a tag to read its data and cause the tag to become decoupled from the environment. Additional schemes are provided to halve the number of active tags in each transmission cycle and to selectively inactivate designated groupings of tag, thereby improving discrimination of the tags in the interrogation field. The tags may be selectively placed in either a tag-talk-first mode or a reader-talk-first mode.
REFERENCES:
patent: 4734680 (1988-03-01), Gehman et al.
patent: 4799059 (1989-01-01), Grindahl et al.
patent: 5124699 (1992-06-01), Tervoert et al.
patent: 5182543 (1993-01-01), Siegel et al.
patent: 5189397 (1993-02-01), Watkins et al.
patent: 5218343 (1993-06-01), Stobbe et al.
patent: 5347263 (1994-09-01), Carroll et al.
patent: 5383134 (1995-01-01), Wrzesinski
patent: 5426425 (1995-06-01), Conrad et al.
patent: 5430441 (1995-07-01), Bickley et al.
patent: 5446447 (1995-08-01), Carney et al.
patent: 5448230 (1995-09-01), Schanker et al.
patent: 5477215 (1995-12-01), Mandelbaum
patent: 5489908 (1996-02-01), Orthmann et al.
patent: 5500651 (1996-03-01), Schuermann
patent: 5530437 (1996-06-01), Goldberg
patent: 5530702 (1996-06-01), Palmer et al.
patent: 5539394 (1996-07-01), Cato et al.
patent: 5550547 (1996-08-01), Chan et al.
patent: 5591951 (1997-01-01), Doty
patent: 5602538 (1997-02-01), Orthmann et al.
patent: 5621412 (1997-04-01), Sharpe et al.
patent: 5621735 (1997-04-01), Rochester, Jr. et al.
patent: 5627544 (1997-05-01), Snodgrass et al.
patent: 5646607 (1997-07-01), Schürmann et al.
patent: 5929779 (1999-07-01), MacLellan et al.
patent: 0439237 (1999-07-01), None
patent: WO 9967734 (1999-12-01), None
patent: WO 0004485 (2000-01-01), None
Press Release: Philips to announce their ICODE product for retail applications at Scan-Tech Europe 98,Transponder News, Oct. 1998, printout from web site address: www.rapidttp.co.za/transponder/presre27.html, printout date: Aug. 23, 1999 (1 page).
Press Release: PHILIPS I-CODE in Retail,Transponder News, (as copied from “On the Move” Mar. 1999 edition, printout from web site address: www.rapidttp.co.za/transponder/presre39.html, printout date Aug. 23, 1999 (2 pages).
News Release: New ‘multimode’ RFID Chip presented by Mikron/Philips, Transponder News, Mar. 3, 1997, printout from web site address: www.rapidttp.co.za/transponder
ews4.html, printout date: Aug. 23, 1999 (1 page).
Key Technical Data of I-Code IC, Philips Electronics, printout from web site address: www.semiconductors.com/identification/products/contactless/I-code/keyfeatures/, printout date: Aug. 23, 1999 (1 page).
Contactless Products: The HITAG Family, Philips Electronics, printout from web site address: www.semiconductors.com/identification/products/contactless/hitag, printout date: Aug. 23, 1999 (3 pages).
MIFARE® STANDARD Card IC MF1 ACS50, Philips Electronics, printout from web site address: www.semiconductors.com/identification/products/contactless/mifare/ics50/, printout date: Aug. 23, 1999 (2 pages).
International Search Report for PCT/US00/31497, mailed Mar. 13, 2001, 1 page.
Alexander Samuel
Benedetti Riccardo
Furey Lee R.
Gallagher, III William F.
Inui Shinichiro
Akin Gump Strauss Hauer & Feld L.L.P.
Checkpoint Systems Inc.
Holloway III Edwin C.
Microchip Technology Incorporated
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