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:
Aug. 31, 2010
Filed:
Mar. 15, 2007
Shawn M Logan, Andover, MA (US);
Shawn M Logan, Andover, MA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
Methods and apparatus are provided for compensating for skew in a differential signal using non-complementary inverters. A skew attenuator is provided for a differential signal having a P rail and an N rail. The skew attenuator comprises one or more non-complementary inverters for compensating for skew between the P rail and the N rail. The non-complementary inverters attenuate a time difference of arrival of transitions for the P rail and the N rail. An exemplary skew attenuator includes a first non-complementary inverter associated with each of the P rail and the N rail. The P rail and the N rail signals are each applied to a gate of one of the first non-complementary inverters, and drains of the first non-complementary inverters provide differential output signals OUTP and OUTN. The exemplary skew attenuator also includes an additional non-complementary inverter associated with each of the first non-complementary inverters.