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:
Jun. 24, 2003
Filed:
Jan. 17, 2001
Applicant:
Inventors:
Kazuo Sakakibara, Tokyo, JP;
Minoru Takeuchi, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/12 ;
U.S. Cl.
CPC ...
H03M 1/12 ;
Abstract
An A/D converter has a successive approximation register having a plurality of A/D registers each corresponding to one of A/D inputs. A capacitor in a comparator is charged by a voltage determined based on a value held in an A/D register corresponding to an A/D input to be A/D converted before starting A/D conversion of the A/D input, thereby reducing noise generated at the time of selecting A/D inputs to enhance A/D conversion accuracy.