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, 2004
Filed:
May. 11, 2000
Maxtor Corporation, Longmont, CO (US);
Abstract
A circuit for measuring and compensating for DC offset introduced into a differential signal due to, for example, terminator mismatches and interconnect resistance, is described herein. The circuit includes a plurality of capacitors that store test values of a differential signal, a summer, a comparator, a digital counter, and an analog-to-digital converter. The summer sums signals from the plurality of capacitors and a dc offset correction signal from the analog-to-digital converter. A differential output from the summer is processed by the comparator to generate a binary output signal that is used to recursively modify the value of the dc offset correction signal until the dc offset correction signal stabilizes.