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. 20, 2013
Filed:
Apr. 07, 2011
Boon Hong OH, Bukit Mertajam, MY;
Peter Schepers, Bornem, BE;
Da Hai Tang, Shanghai, CN;
Altera Corporation, San Jose, CA (US);
Abstract
A circuit includes a receiver circuit, a data valid monitor circuit, a clock signal generation circuit, and a phase shift circuit. The receiver circuit is operable to generate a first periodic signal, a sampled data signal based on an input data signal, and a data valid signal based on a predefined number of bits in the sampled data signal. The data valid monitor circuit is operable to generate a count value by counting periods of the first periodic signal. The data valid monitor circuit is operable to generate a phase error signal based on the data valid signal and the count value. The clock signal generation circuit is operable to generate a second periodic signal. The phase shift circuit is operable to generate a third periodic signal based on the second periodic signal and to adjust a phase of the third periodic signal based on the phase error signal.