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:
Sep. 30, 2003
Filed:
Sep. 19, 2001
Elyar E. Gasanov, Moscow, RU;
Andrej A. Zolotykh, Fryazino, RU;
Aiguo Lu, Cupertino, CA (US);
Ivan Pavisic, San Jose, CA (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
Cell overlap is removed from rows during a cell placement procedure for an integrated circuit chip. The rows are partitioned into subrows so that cells in each subrow have a common characteristic vector. Cell overflow is removed from each of the subrows by moving a cell of an overflowed row or exchanging two cells, at least one of which is in the overflowed subrow. The half-cells of the dual height cells are moved to cell positions in a suitable pair of rows based on a calculated movement penalty. The movement is accomplished to align the half-cells and minimize the penalty. In preferred embodiments, the process is carried out by a computer under control of a computer program.