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:
Apr. 21, 1992
Filed:
Dec. 15, 1988
Applicant:
Inventor:
Edwin A Sloane, Los Altos, CA (US);
Assignee:
Schlumberger Technologies Limited, Hampshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341146 ; 341155 ; 341162 ;
Abstract
A continuous ADC for generating a digital representation, corresponding to a given quantized voltage level, of an analog input signal and for updating the digital representation at times when the approximate amplitude of the analog signal changes from one quantized level to another. A preferred embodiment includes a set of serially connected output stages with each stage for generating a bit output signal included in the digital representation and an analog residual output signal having an amplitude equal to a linear combination of the amplitude of the input analog signal and the prior bit output signals.