The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2004
Filed:
Aug. 22, 2001
Fumiaki Mizuno, Nagoya, JP;
Isao Isshiki, Nagoya, JP;
Other;
Abstract
In a current detecting circuit, a virtual earth generating circuit generates a low voltage V lower by a predetermined potential difference than a battery voltage V outputted from anon-vehicle battery . A CPU operates while the low voltage V is used as an earth potential and the voltage V higher by the predetermined voltage value than the low voltage V is used as a power-supply voltage. A/D conversion input terminals and of the CPU are connected to the battery side of a current detecting resistor and the load side of the resistor . The voltages on the battery side and the load side of the resistor to be inputted to the terminals and are detected by an A/D converter . A load current I is calculated based on the detected results and the resistor resistance.