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. 17, 2003
Filed:
Sep. 13, 2001
Genichi Tanaka, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An engineering-change method of a semiconductor circuit includes a P&R (placement and routing) step of conducting placement and routing and logical optimization using a first netlist to generate a second netlist and a first layout; an ECO (engineering-change order) step of making logical changes in design of the first netlist to generate a third netlist; an ECO-formal verification step of generating a fourth netlist by changing the second netlist such that the fourth netlist becomes logically equivalent to the third netlist; and another ECO step of generating a second layout by changing the first layout such that it matches the fourth netlist. This method can implement an engineering-change method of a semiconductor circuit capable of reducing the design period with eliminating design feedback to the logical optimization at the P&R step.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile