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:
Apr. 28, 2015
Filed:
Mar. 14, 2013
Pmc-sierra Us, Inc., Sunnyvale, CA (US);
Mathieu Gagnon, Verdun, CA;
PMC-Sierra US, Inc., Sunnyvale, CA (US);
Abstract
A method and apparatus for timing optimization are disclosed, which rely on information gathered from a timing detection circuit to find the optimal sampling point of a data recovery system. In an implementation, a timing shift is optimized based on Gardner detector data. In an example, a Gardner detector, or an early and late extraction portion thereof, is added to the data path, and the data path clock is shifted so that it is centered on the data transition mean. In an implementation, the sampling point of the data path is optimized for better horizontal eye opening using a Gardner detector's output for centering the average crossing point of different paths. In an example embodiment, an apparatus is provided with a second clock recovery that is not completely independent of a first clock recovery.