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. 24, 2012
Filed:
Sep. 29, 2008
Asmus Hetzel, Berlin, DE;
Anish Malhotra, Los Altos, CA (US);
Akira Fujimura, Saratoga, CA (US);
Etienne Jacques, Bristol, GB;
Jon Frankle, Los Gatos, CA (US);
David S. Harrison, Sunnyvale, CA (US);
Heath Feather, North Andover, MA (US);
Alexandre Matveev, San Jose, CA (US);
Roger King, San Jose, CA (US);
Asmus Hetzel, Berlin, DE;
Anish Malhotra, Los Altos, CA (US);
Akira Fujimura, Saratoga, CA (US);
Etienne Jacques, Bristol, GB;
Jon Frankle, Los Gatos, CA (US);
David S. Harrison, Sunnyvale, CA (US);
Heath Feather, North Andover, MA (US);
Alexandre Matveev, San Jose, CA (US);
Roger King, San Jose, CA (US);
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
Some embodiments of the invention provide a Local Preferred Direction (LPD) wiring model for use with one or more EDA tools (such as placing, routing, etc). An LPD wiring model allows at least one wiring layer to have a set of regions that each have a different preferred direction than the particular wiring layer. In addition, each region has a local preferred direction that differs from the local preferred direction of at least one other region in the set. Furthermore, at least two regions have two different polygonal shapes and no region in the set encompasses another region in the set. Some embodiments also provide a Graphical User Interface (GUI) that facilitates a visual presentation of an LPD design layout and provides tools to create and manipulate LPD regions in a design layout.