Apparatus and method for calculating offset value for an...

Details Apparatus and method for calculating offset value for an... Apparatus and method for calculating offset value for an...

2007-09-11

2007-09-11

Nguyen, Ha Tran (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

Reexamination Certificate

active

10727588

ABSTRACT:
Calculation of an offset value is permitted when a current value detected by an ammeter of a magnetic flux detection type is switched from a negative value to a positive value, or from a positive value to a negative value, and also a state where an absolute value of the current value is with in a predetermined range is continued for a predetermined time. When calculation of the offset value is permitted, the fact that an ignition switch is turned OFF is detected, and the current value detected by the ammeter is calculated as the offset value.

REFERENCES:
patent: 6331762 (2001-12-01), Bertness
patent: 6621250 (2003-09-01), Ohkubo et al.
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patent: A 2001-264362 (2001-09-01), None
patent: A 2001-327002 (2001-11-01), None

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