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:
May. 20, 1986
Filed:
Mar. 04, 1985
Applicant:
Inventors:
John T Evans, Houston, TX (US);
Richard J Kostelnicek, Dickinson, TX (US);
Assignee:
Exxon Production Research Co., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03F / ;
U.S. Cl.
CPC ...
3403 / ; 3403 / ; 330259 ;
Abstract
The invention is a system for reducing offset in an analog to digital conversion system. A signal representing the system offset is stored in digital form. A digital to analog converter generates an analog feedback signal in response to the stored digital signal. The output of the system analog to digital converter is periodically sampled to update the stored digital word representing system offset.