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:
Jun. 26, 2012
Filed:
Jan. 30, 2009
Subarnarekha Sinha, Menlo Park, CA (US);
Hailong Yao, Beijing, CN;
Charles C. Chiang, San Jose, CA (US);
Subarnarekha Sinha, Menlo Park, CA (US);
Hailong Yao, Beijing, CN;
Charles C. Chiang, San Jose, CA (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
A range pattern is matched to a block of an IC layout by slicing the layout block and the range pattern, followed by comparing a sequence of widths of layout slices to a sequence of width ranges of pattern slices and if the width of any layout slice falls outside the width range of a corresponding pattern slice then the layout block does not match the range pattern. If the comparison succeeds, further comparisons are made between a sequence of lengths of layout fragments in each layout slice and a sequence of length ranges of pattern fragments in corresponding pattern slices. If the length of any layout fragment falls outside the length range of a corresponding pattern fragment then the block does not match the range pattern. If all lengths are within their respective ranges, then the block matches the pattern, although additional constraints are checked in some embodiments.