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.

Date of Patent:
Aug. 07, 2007

Filed:

Apr. 04, 2002
Applicants:

Kevin Jon Mccall, Lafayette, CO (US);

Baker Perkins Lee Scott, Iii, Boulder, CO (US);

Marvin L. Vis, Longmont, CO (US);

Inventors:

Kevin Jon McCall, Lafayette, CO (US);

Baker Perkins Lee Scott, III, Boulder, CO (US);

Marvin L. Vis, Longmont, CO (US);

Assignee:

Cirrus Logic, Inc, Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/30 (2006.01); H04L 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Processing circuitry includes an analog filter and filter control circuitry and processes an analog signal having a varying data rate. The analog filter filters the analog signal based on a transfer characteristic to transfer a filtered signal. The filter control circuit processes a data clock signal corresponding to the varying data rate and a reference clock signal to generate a filter control signal to adjust the transfer characteristic in proportion to the varying data rate. The analog filter adjusts the transfer characteristic in proportion to the varying data rate in response to the filter control signal. The processing circuitry may be implemented in a tape, magnetic, or optical drive.


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