Vehicle-mounted communication device and road-to-vehicle...

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Transportation facility access

Reexamination Certificate

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Details

C705S001100, C705S016000, C340S905000, C701S117000, C701S210000

Reexamination Certificate

active

09362982

ABSTRACT:
A vehicle-mounted communication device and a road-to-vehicle communication device are provided which each allow communication of information using a simple structure by making leakage of information difficult. Information including encryption information is communicated between an on-road apparatus10having a memory28in which an electronic key A is stored, and a vehicle-mounted apparatus30having a storage circuit48. Encrypted route information and the like are stored as is in the vehicle-mounted apparatus30. Encryption and decoding are executed at an on-road apparatus side. In reception of charges, encrypted information from an IC card62having a memory70in which a security mechanism is stored passes through the vehicle-mounted apparatus and is transferred to the on-road apparatus. The encrypted information from the IC card62is decoded with the on-road apparatus. Accordingly, the encrypted information is mutually transferred between these apparatuses and the vehicle-mounted apparatus does not require encryption or decoding. As a result, the security of a system can be improved.

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Yamao, Y; Nakajima, N; Ohmori, S; The Future Generations of Mobile Communications Based on Broadband Access Technologies (IEEE Communications Magazine, Dec. 2000).

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