Secure toll collection system for moving vehicles
First Claim
1. In a toll collecting system comprising a first transceiver which is located in a moving vehicle and a second transceiver which is located at a relatively fixed location on a roadway, a secure method for collecting tolls from the moving vehicle comprising the steps of:
- generating an encryption code at the second transceiver;
transmitting the encryption code to the first transceiver;
storing payment information and a predetermined encryption algorithm in the first transceiver;
encrypting the payment information, using the encryption code, in accordance with the predetermined algorithm;
transmitting the encrypted payment information to the second transceiver; and
verifying the encrypted payment information at the second transceiver.
1 Assignment
0 Petitions
Accused Products
Abstract
A secure toll payment system is realized by transmitting a changeable encryption code from roadside equipment at a toll plaza to a moving vehicle. Thereafter, the moving vehicle uses it to encrypt payment information according to the Data Encryption Standard algorithm. The moving vehicle transmits the encrypted payment information to the roadside equipment which performs a credit or debit transaction. Because the encryption code changes from time to time, so too does the nature of the signal which is transmitted by the vehicle; and fraud, based on electronic eavesdropping, is substantially eliminated. The encryption code comprises an 8-bit random number and a time/date number. Vehicle-mounted apparatus includes a transponder unit and a portable smart card which inserts therein. The roadside equipment includes a pair of spaced-apart antennas that are sequentially located along an express payment lane at a toll plaza and a computer (Plaza Server) which controls them.
350 Citations
20 Claims
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1. In a toll collecting system comprising a first transceiver which is located in a moving vehicle and a second transceiver which is located at a relatively fixed location on a roadway, a secure method for collecting tolls from the moving vehicle comprising the steps of:
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generating an encryption code at the second transceiver; transmitting the encryption code to the first transceiver; storing payment information and a predetermined encryption algorithm in the first transceiver; encrypting the payment information, using the encryption code, in accordance with the predetermined algorithm; transmitting the encrypted payment information to the second transceiver; and verifying the encrypted payment information at the second transceiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In a toll collecting system comprising a first transceiver which is located in a moving vehicle and a second transceiver which is located at a relatively fixed location on a roadway, a secure method for collecting tolls from the moving vehicle comprising the steps of:
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generating an encryption code at the second transceiver; transmitting the encryption code to the first transceiver; storing a predetermined algorithm in the first transceiver; encrypting the encryption code in accordance with the predetermined algorithm; transmitting the encrypted encryption code to the second transceiver; and verifying the encrypted encryption code at the second transceiver. - View Dependent Claims (14, 15)
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16. In a system for making payments to payment collecting apparatus from a distance in a secure manner, the combination of a transponder unit and a smart card
the transponder unit comprising: -
means for receiving and demodulating a first radio frequency (RF) signal to recover an encryption code transmitted by the payment collecting apparatus; means for delivering the encryption code to the smart card; means for receiving an encrypted encryption code from the smart card; means responsive to the encrypted encryption code for generating and transmitting a second RF signal to the payment collecting apparatus; the smart card comprising; means for receiving the encryption code from the transponder unit; means storing a predetermined algorithm and a secret code associated with the smart card; means responsive to the secret code for encrypting the encryption code in accordance with the predetermined algorithm; and means for delivering the encrypted encryption code to the transponder unit. - View Dependent Claims (17, 18)
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19. A secure toll collection system for moving vehicles including roadside communication apparatus and vehicle-mounted apparatus for transmitting/receiving radio frequency signals to/from each other,
the roadside communication apparatus comprising: -
a first antenna for transmitting an encryption code to the moving vehicle; a second antenna, spaced apart from the first antenna, for receiving encrypted payment information from the moving vehicle; data processing means, communicatively connected to the first and second spaced-apart antennas, for periodically changing the encryption code and for verifying the authenticity of the encrypted payment information, the vehicle-mounted apparatus comprising; means for storing payment information, a secret code, and a predetermined algorithm; means for encrypting the payment information in accordance with the predetermined algorithm and the encryption code; and means for transmitting the encrypted payment information to the second antenna. - View Dependent Claims (20)
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Specification