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:
Mar. 20, 2007
Filed:
Oct. 27, 2003
Yean-yow Hwang, Palo Alto, CA (US);
Richard Yuan, Cupertino, CA (US);
Yean-Yow Hwang, Palo Alto, CA (US);
Richard Yuan, Cupertino, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Techniques for mapping functions in a user design to lookup tables on a programmable integrated circuit are provided. Functions within a user design are rewritten as a composition of smaller, decomposed functions using a decomposition technique. An attempt is made to fit the decomposed functions into a lookup table configuration. If the decomposed functions do not fit into one the lookup table configurations for the programmable integrated circuit, the input variables are rotated within the user function. Then, an attempt is made to decompose the user function again based on the rotated input variables.