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:
Jan. 25, 2022
Filed:
Jan. 26, 2021
Shahab Oveis Gharan, Ottawa, CA;
Ian Roberts, Ottawa, CA;
Yuriy Greshishchev, Ottawa, CA;
Naim Ben-hamida, Ottawa, CA;
Kim B. Roberts, Ottawa, CA;
Shahab Oveis Gharan, Ottawa, CA;
Ian Roberts, Ottawa, CA;
Yuriy Greshishchev, Ottawa, CA;
Naim Ben-Hamida, Ottawa, CA;
Kim B. Roberts, Ottawa, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
An apparatus is configured to generate, from a stream of periodic digital samples, a first sub-stream of periodic analog samples and a second sub-stream of periodic analog samples, each sub-stream comprising substantially stable time intervals. The apparatus is further configured to generate a sign-modulated sub-stream by applying to the second sub-stream a sign modulation operation effecting a sign transition during a stable time interval of the second sub-stream. The apparatus is further configured to generate an output stream of periodic analog samples based on a sum of the first sub-stream and the sign-modulated sub-stream, wherein a period of the output stream is shorter than periods of the first and second sub-streams.