US Patent Issued to CIENA on Dec. 16 for "Duty-cycle distortion (DCD) and bit-level inter-symbol interference (ISI) pre- compensation for a digital-to-analog converter (DAC)" (Canadian Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,797, issued on Dec. 16, was assigned to CIENA Corp. (Hanover, Md.).

"Duty-cycle distortion (DCD) and bit-level inter-symbol interference (ISI) pre- compensation for a digital-to-analog converter (DAC)" was invented by Ramin Babaee (Ottawa) and Shahab Oveis Gharan (Ottawa).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the subject disclosure may include, for example, obtaining a digital input signal for conversion into analog by a digital-to-analog converter (DAC), and performing filtering operations relating to the digital input signal, wherein the filtering operations provide one or more of pre-compensation for duty-cycle distortion (DCD)...