Range Pattern Data Structure for IC Hotspot Identification

The patent segments the identification process into multiple stages: initial simple pattern matching to identify potential hotspots, followed by RET-aware analysis to filter false positives. The routing correction is also segmented into iterative steps where only regions confirmed as true hotspots are modified. This segmentation allows the system to achieve high accuracy without requiring the entire process to be complex.

The patent introduces an intermediary RET-aware analysis step between simple hotspot identification and final routing correction. This intermediary layer uses reticle enhancement technology information to verify potential hotspots and eliminate false positives, serving as a mediator that bridges the gap between simple detection and accurate correction without requiring the entire system to be complex.

The patent performs preliminary action by using the simple aerial image simulator to quickly identify potential hotspots, then follows up with RET-aware analysis only on those specific regions. This preliminary screening approach maintains speed while ensuring reliability, as the complex RET analysis is applied selectively rather than to the entire layout.

The patent applies partial action by using the computationally intensive RET-aware analysis only on potential hotspot regions identified by the simple simulator, rather than applying it to the entire layout. This partial application of the more complex method achieves reliable identification without the excessive processing time that would result from applying it universally.