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:
Apr. 29, 2008
Filed:
Feb. 18, 2004
Christopher J. Abel, Coplay, PA (US);
Joseph Anidjar, Asbury, NJ (US);
James D. Chlipala, Emmaus, PA (US);
Abhishek Duggal, Allentown, PA (US);
Donald R. Laturell, Allentown, PA (US);
Christopher J. Abel, Coplay, PA (US);
Joseph Anidjar, Asbury, NJ (US);
James D. Chlipala, Emmaus, PA (US);
Abhishek Duggal, Allentown, PA (US);
Donald R. Laturell, Allentown, PA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A system for a backplane that employs i) an adjustment of positive-to-negative (P-N) driver skew of a transmit signal of a relatively high-speed differential driver to reduce far-end crosstalk, ii) a high-speed differential subtraction circuit combining a gain-adjusted replica of at least one transmit signal with a received signal to reduce near-end crosstalk, and iii) a phase-locked loop (PLL) synchronization circuit to align timing events between a set of near-end and far-end high-speed interfaces.