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. 22, 2008
Filed:
Aug. 12, 2003
Petre Popescu, Ottawa, CA;
Douglas Stuart Mcpherson, Ottawa, CA;
Stefan Szilagyi, Ottawa, CA;
Quoc Hai Tran, Ottawa, CA;
Kathryn Howlett, Ottawa, CA;
Petre Popescu, Ottawa, CA;
Douglas Stuart McPherson, Ottawa, CA;
Stefan Szilagyi, Ottawa, CA;
Quoc Hai Tran, Ottawa, CA;
Kathryn Howlett, Ottawa, CA;
Applied Micro Circuits Corporation, San Diego, CA (US);
Abstract
The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the utmost speed of operation, all circuits including the phase locked loop, operate as differential circuits which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.