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:
Feb. 11, 1986
Filed:
Jun. 16, 1983
Robert L Carbrey, Boulder, CO (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
An analog-to-digital converter circuit is disclosed employing a plurality of comparators each having the same reference voltage input. At each comparator stage plus and minus binary 'bit weights' are developed. Selection of either the positive or negative bit weights at a stage allows a binary fraction to be added or subtracted. The number of comparator stages need only equal the number of desired digit positions in the output instead of having one comparator for each quantizing level. The comparator stages operate in a 'wave' or 'pipeline' manner under the control of a plurality of high speed wave forms so that each stage decodes its respective binary digit for one analog sample while the other stages are decoding their respective binary digits of other analog samples.