Shielding field method and apparatus

Details Shielding field method and apparatus Shielding field method and apparatus

1990-05-17

1993-10-12

Envall, Jr., Roy N.

Boots, shoes, and leggings

364401, 235384, 340928, G07G 112, G08G 100, G08G 1065

Patent

active

052531627

ABSTRACT:
A system for automatic collection of tolls includes a toll facility, an in-vehicle toll processor having memory for storing a toll-money-available quantity purchased by the user, and a toll-facility-identification site that transmits a toll-facility-identifier signal indicating the identity of the upcoming toll facility and the toll to be collected. As the vehicle approaches the identification site, the in-vehicle processor receives the identifier signal and calculates the toll to be debited. When the vehicle passes through the toll facility, the facility transmits a toll-collect signal instructing the in-vehicle toll processor to debit the calculated toll from memory. The in-vehicle processor debits the calculated amount and transmits an acknowledgement signal to the toll facility.

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Desmond, "Toll Both Net Automates Fare Collection Saves Cash", Network World, vol. 6, No. 23, pp. 4-6.
Enclycopedia of Computer Science and Engineering, Van Norstrand Reinhold Company, Inc., 1983, pp. 563-565.

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