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:
Jul. 08, 1997
Filed:
Aug. 30, 1995
Thomas V Bruhns, Everett, WA (US);
Donald R Hiller, Lake Stevens, WA (US);
Jan R Hofland, Everett, WA (US);
James W Waite, Jr, Everett, WA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
AC coupling is effected by a feedback circuit that detects a DC component in the coupled signal, and adjusts a DC subtraction signal accordingly. In one embodiment, a digital signal processor (DSP) analyzes the coupled signal for a remaining DC component, and controls the subtraction signal. Use of a DSP allows dynamic control of parameters including AC cutoff frequency, gain, and transfer function. Another embodiment provides accurately phase matched AC coupling across two or more signal channels.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile