Vehicle diagnostic data storing system

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication

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Details

701 29, 701 34, 701 36, 701 63, G06F 700, G06F 1900

Patent

active

059648139

ABSTRACT:
A vehicle diagnostic information storage system includes a volatile storage device such as a backup RAM and a nonvolatile storage device such as EEPROM. If a fault occurs, a control section stores data on fault items, and input and output conditions of sensors of a vehicle control system, in the volatile storage device and updates the data in the volatile storage device during a vehicle operation. In response to a switching operation of a vehicle main switch such as a turn-on operation of an ignition switch, the control section transfers the most recent version of updated data from the volatile storage device to the nonvolatile storage device.

REFERENCES:
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patent: 5388045 (1995-02-01), Kamiya et al.
patent: 5420792 (1995-05-01), Butsuen et al.
patent: 5479347 (1995-12-01), Oguro et al.
patent: 5696676 (1997-12-01), Takaba

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