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:
Aug. 21, 1990
Filed:
Jul. 10, 1989
Philippe L Jacob, Clifton Park, NY (US);
Steven L Gaverick, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for performing oversampled analog-to-digital conversion of an input signal to generate a conversion result signal essentially free of systematic errors in accordance with the invention includes the steps of: performing oversampled analog-to-digital conversion of the input signal to generate a preliminary conversion result signal accompanied by systematic error, performing oversampled analog-to-digital conversion of a zero-valued signal to generate a correction signal essentially consisting of a corresponding systematic error, and differentially combining the correction signal and the preliminary conversion result signal to generate the conversion result essentially free of systematic errors. In a structural embodiment of the invention the systematic error in an oversampled analog-to-digital converter is suppressed by subtracting from the conversion response the response of a similar oversampled analog-to-digital converter to the reference voltage as its analog input signal.