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:
Sep. 17, 2019

Filed:

Jan. 17, 2019
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Larry L. Tretter, Tucson, AZ (US);

Matthew M. Viens, Tucson, AZ (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/10 (2006.01); G11B 5/008 (2006.01); H03H 7/01 (2006.01); G11B 20/14 (2006.01); H03G 3/20 (2006.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
G11B 20/10046 (2013.01); G11B 5/00813 (2013.01); G11B 20/10018 (2013.01); G11B 20/10222 (2013.01); G11B 20/14 (2013.01); H03G 3/20 (2013.01); H03H 7/0161 (2013.01); H03M 1/124 (2013.01);
Abstract

An apparatus according to one embodiment includes a hardware based controller that is configured to perform operations. The operations include performing anti-aliasing filtering on each of a plurality of signals, each signal having a frequency that is a different fraction of a frequency of a data read clock. An amplitude is measured of each of the signals after the anti-aliasing filtering. Moreover, the operations include determining whether the measured amplitudes of the signals are within a predefined range. Anti-aliasing settings used during the anti-aliasing filtering are stored in response to a determination that the amplitudes of the signals are within the predefined range. The anti-aliasing settings are changed in response to a determination that the amplitudes of the signals are outside the predefined range.


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