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. 01, 2005
Filed:
Jul. 20, 2004
Yukihiko Tanizawa, Kariya, JP;
Yukihiko Tanizawa, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
Predetermined reference voltages v, vare A/D-converted to achieve corresponding digital data d, d, d. Any reference digital values y, yare set in advance so as to satisfy y/y=(v−v)/(v−v)=½. Furthermore, calculations of x=d−dand x=d−dare carried out to achieve x, x. A quadratic curve (quadratic function expression y=f(x)) passing a point D (x, y) and a point E (x, y) and the origin on the xy coordinate system is set as a linearly correcting expression. A shift value x achieved by subtracting dfrom data ds having non-linearity from the A/D converting circuit is corrected by the linearly correcting expression thus achieved to achieve a linearly corrected value y to ds.