Title:
ON-VEHICLE ELECTRIC ACCESSORY EQUIPMENT MOUNTED WITH MICROCOMPUTER
Document Type and Number:
Japanese Patent JPH1153270
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To eliminate the need to use dedicated hardware and to actualize a reduce number of components, easy assembly, and low manufacture cost by providing a 1st means which restarts controlling on-vehicle electric accessory equipment after initializing a RAM including power source momentary break check information. SOLUTION: When the degree of a voltage drop is relatively large, sufficient voltage compensation can not be performed and a dropped voltage is outputted from a regulator part 7 and supplied to a microcomputer 1 (CPU 2, RAM 3, and ROM 4), a reset circuit 8, etc. From the drop of the source voltage, the CPU 2 investigates and detects whether or not power source momentary break check information stored previously in the RAM 3 is left as it is. On deciding that information showing operation conditions is ceased or varied through the investigation and detection, the CPU 2 initializes the storage area of the information showing the operation conditions in the RAM 3 and restarts controlling the control part 6.
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Inventors:
HAYASAKA SATORU
Application Number:
JP21071097A
Publication Date:
February 26, 1999
Filing Date:
August 05, 1997
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD
International Classes:
B60H1/00; G06F1/26; G06F1/30; G06F11/14; G06F12/16; (IPC1-7): G06F12/16; B60H1/00; G06F1/26; G06F1/30
Attorney, Agent or Firm:
Kenjiro Take (2 outside)
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