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. 27, 2009
Filed:
May. 24, 2006
Naresh Shanbhag, Champaign, IL (US);
Hyeon Min Bae, Champaign, IL (US);
Jinki Park, Plano, TX (US);
Paul Suppiah, San Jose, CA (US);
Naresh Shanbhag, Champaign, IL (US);
Hyeon Min Bae, Champaign, IL (US);
Jinki Park, Plano, TX (US);
Paul Suppiah, San Jose, CA (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
A phase detector apparatus and method used for clock recovery from a data signal is provided. The phase detector provides phase correction signals to a clock signal generator, where the phase correction signals are only generated if a predetermined data sample pattern is observed. In particular, the predetermined data sample pattern is preferably a transition from one to zero. Thus, transitions from zero to one will not provide a valid phase update output signal, even though a transition has occurred. In other embodiments the predetermined data sample pattern is preferably a one to zero transition preceded by an additional logic one sample.