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:
Aug. 31, 2004
Filed:
Nov. 28, 2000
Casper Dietrich, Roskilde, DK;
Intel Corporation, Santa Clara, CA (US);
Abstract
A lock detection method for generating a lock signal including providing a data signal and a clock signal to a clock detection unit, the data signal being describable by an eye pattern, the data signal and the clock signal being in lock when a data transition occurs in the center of a first transition period. A lock detection unit including: detection of absence or presence of a data transition of the data signal in a first partial period centered around the center of the first transition period and generating a first output signal having a first logic value in response to the presence of a data transition and having a second logic value in response to the absence of a data transition in the first partial period, detection of absence or presence of a data transition of the data signal in a second partial period centered around the center of the eye and generating a second output signal having a first logic value in response to the absence of a data transition and having a second logic value in response to the presence of a data transition in the second partial period, and comparing the first and second output signals and generating a lock signal according to the comparison.