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:
Feb. 22, 2011
Filed:
Oct. 14, 2009
Yuxiang Zheng, Richardson, TX (US);
Hao Liu, Dallas, TX (US);
Yanli Fan, Allen, TX (US);
Mark W. Morgan, Allen, TX (US);
Yuxiang Zheng, Richardson, TX (US);
Hao Liu, Dallas, TX (US);
Yanli Fan, Allen, TX (US);
Mark W. Morgan, Allen, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
For differential signal transmission (especially in high speed applications), intra-pair skew between paths carrying complementary portions of a differential signal can significantly affect performance. Conventional de-skew circuits employ simple filters (i.e., low-pass filters) to operate as delay elements to account for skew; however, these filters can distort the differential signal, which can also adverse affect performance. Here, an all-pass, adjustable delay element and de-skew circuit are provided to allow for compensation of skew without degrading the differential signal as conventional circuit do and, thus, having better performance characteristics.