Method of enabling two-state operation of electronic toll...

Details Method of enabling two-state operation of electronic toll... Method of enabling two-state operation of electronic toll...

2008-06-17

2008-06-17

La, Anh V. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572400, C340S928000, C340S010100

Reexamination Certificate

active

07388501

ABSTRACT:
A method and system for communicating state information from a transponder to a reader. The transponder outputs linearly polarized RF signals having either a first polarization, such as horizontal, or a second polarization, such as vertical. The polarization is selected so as to indicate a first state or a second state. The reader detects whether received RF signals have the first polarization or the second polarization, and thereby determines the state of the transponder. In some embodiments, the reader may include two linearly polarized antennas, one with the first polarization and one with the second polarization, for receiving the RF signals from the transponder and determining the polarization of the received RF signals. The system may be implemented within an electronic toll collection system, wherein the transponders are affixed to the interior of vehicle windshields using a rotatable mounting mechanism having two selectable positions.

REFERENCES:
patent: 4104630 (1978-08-01), Chasek
patent: 4303904 (1981-12-01), Chasek
patent: 4816839 (1989-03-01), Landt
patent: 4870419 (1989-09-01), Baldwin et al.
patent: 4937581 (1990-06-01), Baldwin et al.
patent: 5086389 (1992-02-01), Hassett et al.
patent: 5132687 (1992-07-01), Baldwin et al.
patent: 5144553 (1992-09-01), Hassett et al.
patent: 5164732 (1992-11-01), Brockelsby et al.
patent: 5196846 (1993-03-01), Brockelsby et al.
patent: 5253162 (1993-10-01), Hassett et al.
patent: 5266947 (1993-11-01), Fujiwara et al.
patent: 5289183 (1994-02-01), Hassett et al.
patent: 5310999 (1994-05-01), Claus et al.
patent: 5351187 (1994-09-01), Hassett
patent: 5424727 (1995-06-01), Shieh
patent: 5425032 (1995-06-01), Shloss et al.
patent: 5485520 (1996-01-01), Chaum et al.
patent: 5602375 (1997-02-01), Sunahara et al.
patent: 5640156 (1997-06-01), Okuda et al.
patent: 5657008 (1997-08-01), Bantli
patent: 5675342 (1997-10-01), Sharpe
patent: 5701127 (1997-12-01), Sharpe
patent: 5748106 (1998-05-01), Schoenian et al.
patent: 5751973 (1998-05-01), Hassett
patent: 5771021 (1998-06-01), Veghte et al.
patent: 5777565 (1998-07-01), Hayashi et al.
patent: 5805082 (1998-09-01), Hassett
patent: 5819234 (1998-10-01), Slavin et al.
patent: 5831547 (1998-11-01), Ohtsuki et al.
patent: 5841866 (1998-11-01), Bruwer et al.
patent: 5850191 (1998-12-01), Yagi et al.
patent: 5857152 (1999-01-01), Everett
patent: 5859415 (1999-01-01), Blomqvist et al.
patent: 5940006 (1999-08-01), MacLellan et al.
patent: 5963149 (1999-10-01), Nagura et al.
patent: 6025799 (2000-02-01), Ho et al.
patent: 6085805 (2000-07-01), Bates
patent: 6121880 (2000-09-01), Scott et al.
patent: 6191705 (2001-02-01), Oomen et al.
patent: 6219613 (2001-04-01), Terrier et al.
patent: 6243013 (2001-06-01), Duan et al.
patent: 6616034 (2003-09-01), Wu et al.
patent: 6661352 (2003-12-01), Tiernay et al.
patent: 6725014 (2004-04-01), Voegele
patent: 6898753 (2005-05-01), Bonifas
patent: 7030759 (2006-04-01), Nelson
patent: 7265675 (2007-09-01), Carrender et al.
patent: 2001/0050922 (2001-12-01), Tiernay et al.
patent: 2006/0071816 (2006-04-01), Tang et al.
patent: 2006/0082470 (2006-04-01), Zhu et al.
patent: 0 333 679 (1989-09-01), None
patent: 10-105753 (1998-04-01), None
patent: WO 99/33027 (1999-01-01), None
Woo et al., Dual Mode Electronic Toll Collection Transponder, U.S. Appl. No. 11/409,897, filed Apr. 24, 2006.
Woo et al., Open Road Vehicle Emissions Inspection, U.S. Appl. No. 11/409,741, filed Apr. 24, 2006.
Ho et al., Compact Microstrip Transponder Antenna, U.S. Appl. No. 11/388,737, filed Mar. 24, 2006.
Tang et al., Method and System for Obtaining Traffic Information Using Transponders, U.S. Appl. No. 11/284,277, filed Nov. 21, 2005.
Ho et al., Dynamic Timing Adjustment in an Electronic Toll Collection Systems, U.S. Appl. No. 11/176,758, filed Jul. 7, 2005.
Tang, RF Transponder with Electromechanical Power, U.S. Appl. No. 11/054,520, filed Feb. 9, 2005.
Zhu, U.S. Phase Modulation for Backscatter Transponder, U.S. Appl. No. 11/098,257, filed Apr. 4, 2005.
Zhu, U.S. System and Method for Secure Mobile Commerce, U.S. Appl. No. 10/912,997, filed Aug. 6, 2004.
Ching et al.,A Laser Micromachined Multi-Modal Resonating Power Transducer for Wireless Sensing Systems, Sensors and Actuators A 97-98 (2002) 685-690, http://www.wlsevier.com.
Finkenzeller, Klaus,Ch. 3: Fundamental Operating Principles, RFID Handbook: Fundamentals and Applications in Contactless Smart Cards and indentification, Klause Finkenzellar, (2003) John Wiley & Sons, Ltd. ISBN 0-470-84402-7.
Sorrells,Passive RFID Basics, AN680, Microchip Technology Inc., (1998) DS00680B.

Affiliated with

Also associated with

Rating

Method of enabling two-state operation of electronic toll... 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 of enabling two-state operation of electronic toll..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of enabling two-state operation of electronic toll... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2809765