Data carrier system

Details Data carrier system Data carrier system

1999-05-10

2000-11-28

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

701 32, 307 102, 307 103, 307 104, 307 105, G06F 1900

Patent

active

061546941

ABSTRACT:
An electrical control unit for a vehicle successively writes operation data of the vehicle in a transponder provided in a key used for starting the vehicle. At the same time, the electric control unit successively writes the same operation data in a memory area of a non-volatile memory corresponding to a key used for starting the engine. When the key is lost, the engine is started under the condition that the identification of the lost key is written in a replacement key. Then, the electric control unit of the vehicle writes operation data stored in the non-volatile memory corresponding to the lost key in the replacement key. At the same time, the electric control unit of the vehicle moves the operation data to a memory area corresponding to the replacement key. Accordingly, when the operation data is read from the replacement key, operation data stored in the lost key can be managed.

REFERENCES:
patent: 5430432 (1995-07-01), Camhi et al.
patent: 5798576 (1998-08-01), Ostermann et al.
patent: 5912512 (1999-06-01), Hayashi et al.
patent: 6025653 (2000-02-01), Hayashi et al.

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