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:
Dec. 30, 2014
Filed:
Apr. 26, 2013
Altera Corporation, San Jose, CA (US);
Yan Chong, San Jose, CA (US);
Warren Nordyke, Cupertino, CA (US);
Sean Shau-Tu Lu, San Jose, CA (US);
Weiqi Ding, Fremont, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Clock alignment circuitry may include phase comparator circuitry with a first input terminal that receives as first clock signal from a first clock tree and a second input terminal that receives a second clock signal from a second clock tree. The phase comparator circuitry may compare the first and second clock signals and generate different control signals based on the first and second clock signals. The integrated circuit may further include phase interpolator circuitry that generates an output clock signal based on at least one of the control signals received from the phase comparator circuitry. Edges of the generated output clock signal may align with edges of either the first clock signal or the second clock signal.