Patent ID: 7610565

Claim:
A method, performed on a computer system, for migrating an integrated circuit (IC) design layout from a source technology without radical design restrictions (RDR) to a target technology with RDR, the method comprising: using the computer system to perform the following: inserting a designator shape within the design layout prior to migration to reserve space for a feature; and migrating the design layout from the source technology without RDR to the target technology with RDR while reserving space for the feature according to the designator shape, wherein the target technology with RDR comprises a fully gridded layout that constrains critical dimensions to lie in one orientation and at integer multiples of a contacted device pitch, wherein the RDR requires a limited number of narrow line widths, a single orientation of narrow features, narrow features placed on a uniform and coarse pitch, a uniform proximity environment for all critical gates and a limited number of pitches for critical gates; legalizing the design layout to meet an RDR grid constraint and fix any ground rule violation in a first direction; inserting required dummy shapes; and running a minimum perturbation analysis in order address an edge coverage requirement of at least one critical shape and fix any ground rule violation in a second direction.