MULTIPLE RF READ ZONE SYSTEM
First Claim
1. A system configured to conduct transactions with vehicles traveling on a road, comprising:
- a first RF source configured to communicate with RF transponders in a first area on a road;
a second RF source configured to communicate with RF transponders in a second area on the road, wherein the first area is different from the second area; and
one or more processors operatively coupled to the first RF source and the second RF source, and configured to complete a tolling transaction with an RF transponder carried by a vehicle, wherein completing the tolling transaction comprises completing a set of communications with the RF transponder, and wherein the processor is configured to complete the tolling transaction by;
attempting to complete the set of communications with the RF transponder via the first RF source, andresponsive to failure to complete set of communications with the RF transponder via the first RF source, conducting at least a portion of the set of communication with the RF transponder via the second RF source.
5 Assignments
0 Petitions
Accused Products
Abstract
A multizone RF read/write system for conducting transactions with vehicles traveling at high speeds. A first RF read zone is created, preferably by use of a first gantry that extends over at least one lane and contains at least one RF source that creates a large powerful RF read zone for reading or reading and writing to a transponder on a passing vehicle. Additional RF read zones arranged in tandem with the first RF read zone are created by at least one additional RF source that is located on an additional gantry extending over at least one lane, or located on the first gantry. Accordingly, multiple RF read zones are created to conduct transactions with passing vehicles. In one aspect, the multiple RF read zones can be used to ensure that tolling transactions with a single vehicle are more likely to be completed and have a higher degree of accuracy. In another aspect, the multiple RF read zones each employ a different RF technology so that multiple types of RF toll tags can be read and written.
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Citations
19 Claims
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1. A system configured to conduct transactions with vehicles traveling on a road, comprising:
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a first RF source configured to communicate with RF transponders in a first area on a road; a second RF source configured to communicate with RF transponders in a second area on the road, wherein the first area is different from the second area; and one or more processors operatively coupled to the first RF source and the second RF source, and configured to complete a tolling transaction with an RF transponder carried by a vehicle, wherein completing the tolling transaction comprises completing a set of communications with the RF transponder, and wherein the processor is configured to complete the tolling transaction by; attempting to complete the set of communications with the RF transponder via the first RF source, and responsive to failure to complete set of communications with the RF transponder via the first RF source, conducting at least a portion of the set of communication with the RF transponder via the second RF source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for conducting a tolling transaction with an RF transponder carried by a vehicle traveling on a road, wherein the tolling transaction comprises a set of communications with the RF transponder, the method comprising:
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attempting to complete the set of communications with the RF transponder while the vehicle is traveling within a first area on the road; and responsive to the set of communications being initiated with the RF transponder while the vehicle is traveling within the first area on the road, and responsive failure to complete the initiated set of communications with the RF transponder while the vehicle is traveling within the first area on the road, conducting at least a portion of the set of communications with the RF transponder while the vehicle is traveling within a second area on the road, wherein the second area on the road is different than the first area. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification