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:
Oct. 30, 2012
Filed:
Dec. 06, 2011
Mark Joseph Callicotte, Sacramento, CA (US);
Hiroshi Takatori, Sacramento, CA (US);
Mark Joseph Callicotte, Sacramento, CA (US);
Hiroshi Takatori, Sacramento, CA (US);
Vintomie Networks B.V., LLC, Dover, DE (US);
Abstract
An adaptive transversal filter having tap weights Wj which are products of corresponding tap coefficients Cand tap gains Mis provided. A filter control loop controls all of the tap coefficients Csuch that an error signal derived from the filter output is minimized. One or more tap control loops controls a tap gain Msuch that the corresponding tap coefficient Csatisfies a predetermined control condition. For example, |C| can be maximized subject to a constraint |C| C, where Cis a predetermined maximum coefficient value. In this manner, the effect of quantization noise on the coefficients Ccan be reduced. Multiple tap control loops can be employed, one for each tap. Alternatively, a single tap control loop can be used to control multiple taps by time interleaving.