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:
May. 08, 2007
Filed:
Nov. 03, 2004
Shao-po Wu, Portola Valley, CA (US);
Seonghun Cho, Santa Clara, CA (US);
Yao-ting Wang, Atherton, CA (US);
Shao-Po Wu, Portola Valley, CA (US);
Seonghun Cho, Santa Clara, CA (US);
Yao-Ting Wang, Atherton, CA (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
A method of assigning phases to shifters on a layout is provided. The method includes creating a link between any two shifters within a predetermined distance from each other. In one embodiment, the predetermined distance is larger than a minimum feature size on the layout, and smaller than a combined minimum pitch and regulator width. A weight can be assigned to each created link. Phases can be assigned to the shifters, wherein if a phase-shift conflict exists on the layout, then one or more links can be broken based on their weight.