The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 2000
Filed:
Mar. 27, 1997
Norihiro Isobe, Tokai, JP;
Tomoaki Mizuno, Toyoake, JP;
Denso Corporation, Kariya, JP;
Abstract
An automatic toll charging system communicates by radio between roadside units disposed on each gate of a toll road and a vehicle-mounted unit mounted in a vehicle, and automatically charges a toll in a range from an entrance gate to an exit gate. In this system, an IC card is inserted in the vehicle-mounted unit , and payment information recorded in the IC card and entrance information received from a roadside unit, disposed at the entrance gate are recorded in the information recording part of the vehicle-mounted unit. In addition, the entrance information recorded in the information recording part is transmitted to the roadside unit disposed at the exit gate, and a toll payment process is executed. The entrance information is recorded in the IC card as a backup so the toll payment process can be executed even if a function of the vehicle-mounted unit is performed improperly.