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. 27, 2010
Filed:
Apr. 13, 2007
Yan Chong, San Jose, CA (US);
Chiakang Sung, Milpitas, CA (US);
Joseph Huang, Morgan Hill, CA (US);
Michael H. M. Chu, Fremont, CA (US);
Yan Chong, San Jose, CA (US);
Chiakang Sung, Milpitas, CA (US);
Joseph Huang, Morgan Hill, CA (US);
Michael H. M. Chu, Fremont, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Circuits, methods and apparatus are provided to reduce skew among signals being provided or transmitted by a data interface. Signal path delays are varied such that signals transmitted by a memory interface are calibrated or aligned with each other along a rising and/or falling edge. For example, self-calibration, external circuitry, or design tools can provide skew adjustment of each output channel by determining one or more delays for each output channel path. When aligning multiple edges, the edges of the output signals may be aligned independently, e.g., using edge specific delay elements.