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:
Sep. 21, 1976
Filed:
Sep. 19, 1974
Applicant:
Inventor:
Glenn C Waehner, Riverside, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3403 / ; 324 / ;
Abstract
Elimination of an inverting amplifier and a video switch, which provide selective polarity reversal to permit usage of unipolar A/D conversion in prior art bipolar A/D converters, for improved economy and performance, is achieved by usage of two comparators, one for comparing positive input signals and one for comparing negative input signals, the output of one of the comparators, at any one time, providing the input to unipolar A/D converter successive approximation logic, and establishing the sign of the result.