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:
Nov. 25, 2014
Filed:
Dec. 14, 2011
Steven J. Baumgartner, Zumbro Falls, MN (US);
Frank D. Ferraiolo, New Windsor, NY (US);
Susan M. Eickhoff, Hyde Park, NY (US);
Michael B. Spear, Round Rock, TX (US);
Steven J. Baumgartner, Zumbro Falls, MN (US);
Frank D. Ferraiolo, New Windsor, NY (US);
Susan M. Eickhoff, Hyde Park, NY (US);
Michael B. Spear, Round Rock, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A communications link includes multiple continuously calibrated parallel lines, wherein one or more lines are at least partially powered down while being continuously calibrated to reduce power consumption. In one aspect, at least N+1 lines (where N is the logical bus width) are periodically recalibrated, and at least one redundant line is powered down between calibrations. The redundant line could be either a true spare available for use as a replacement, or an extra line which carries functional data while other lines are being calibrated in turn. In another aspect, the logical bus width is variable, but does not exceed N. When N<N, lines not carrying functional data are partially powered down between calibrations.