Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Reexamination Certificate
2006-02-07
2006-02-07
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
C701S036000
Reexamination Certificate
active
06996463
ABSTRACT:
A vehicle ECU (Electronic Control Unit) has a main microcomputer and an auxiliary microcomputer, with the main microcomputer periodically executing a processing routine for calculating values such as degrees of throttle opening of the vehicle engine based upon the current operating condition of the engine, wherein the main microcomputer generates resource inspection data during each execution of the routine and transmits the resource inspection data to the auxiliary microcomputer, with the resource inspection data including for example respective checksums for values calculated in successive steps of the routine and information indicating whether all steps of the routine have been actually executed, and with the auxiliary microcomputer monitoring the operation of the main microcomputer based upon the received resource inspection data.
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Beaulieu Yonel
Denso Corporation
Nixon & Vanderhye P.C.
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