On-vehicle electronic control device

Details On-vehicle electronic control device On-vehicle electronic control device

2009-03-11

2011-10-11

Fleming, Faye M. (Department: 3616)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

Reexamination Certificate

active

08036790

ABSTRACT:
Provided is an on-vehicle electronic control device with low cost and low power consumption for performing monitoring control in both a driving mode and a parking mode of a vehicle. A main CPU is supplied with electric power from an on-vehicle battery via a power switching element and a main power supply circuit so as to control a plurality of electric loads in accordance with operating states of a plurality of input sensors. A sub CPU connected to the main CPU via a serial interface is supplied with electric power from the on-vehicle battery via a sub power supply circuit so as to monitor operations of the main CPU and input signals. The sub CPU has low speed and small memory capacity so as to operate with lower power consumption compared with the main CPU.

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