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:
Sep. 09, 2008
Filed:
Jan. 11, 2007
Applicant:
Boris Kershteyn, Marietta, GA (US);
Inventor:
Boris Kershteyn, Marietta, GA (US);
Assignee:
Ciena Corporation, Linthicum, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides methods and systems for multiplexing five channels, such as 10 Gb/s to 50 Gb/s, into a single data sequence using a 5:1 multiplexer using a ⅕ratio duty cycle clock. The ⅕ratio duty cycle clock is a clock with a period equal to the channel data rate, and a pulse width equal to the period of data rate five times higher. The ⅕ratio duty clock is combined with a proper combination of delays and phase shifters to allow the use of AND gates and OR gates to combine the five channels in a proper sequence to create a serial five-times higher data sequence.