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Title:
ON-VEHICLE ELECTRONIC EQUIPMENT CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP2008088921
Kind Code:
A
Abstract:

To provide an on-vehicle electronic equipment control system for properly executing the reset of a CPU even when battery voltage lowers at starting an engine.

The control system 1 for on-vehicle electronic equipment 150 executes the reset of the CPU 101 while detecting the edge of input voltage Vrst to a reset terminal 101a of the CPU 101 when falling below a reset voltage threshold value Vs down to a low voltage value. The reset voltage threshold value Vs is set as a first threshold voltage Vs1 during an engine starting period Ts and as a second threshold voltage Vs2 higher than the first threshold voltage Vs1 during a normal period Tn.


Inventors:
TAKADA TAKASHI
Application Number:
JP2006272291A
Publication Date:
April 17, 2008
Filing Date:
October 03, 2006
Export Citation:
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Assignee:
DENSO CORP
International Classes:
F02D45/00
Domestic Patent References:
JPH07273781A1995-10-20
JPH1171948A1999-03-16
JP2006112243A2006-04-27
JP2005256692A2005-09-22
JPH07273781A1995-10-20
JPH1171948A1999-03-16
JP2006112243A2006-04-27
JP2005256692A2005-09-22
Attorney, Agent or Firm:
Masanori Sugawara



 
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