An Interactive Graphics System for the design of integrated circuits
DAC '78 Proceedings of the 15th Design Automation Conference
Methods for hierarchical automatic layout of custom LSI circuit masks
DAC '78 Proceedings of the 15th Design Automation Conference
Design rule checking and analysis of IC mask designs
DAC '76 Proceedings of the 13th Design Automation Conference
Automatic circuit analysis based on mask information
DAC '76 Proceedings of the 13th Design Automation Conference
The automatic recognition of silicon gate transistor geometries: An LSI design aid program
DAC '76 Proceedings of the 13th Design Automation Conference
Fast algorithms for LSI artwork analysis
DAC '77 Proceedings of the 14th Design Automation Conference
A layout checking system for large scale integrated circuits
DAC '77 Proceedings of the 14th Design Automation Conference
A hierarchical bit-map format for the representation of IC mask data
DAC '80 Proceedings of the 17th Design Automation Conference
A database approach for managing VLSI design data
DAC '82 Proceedings of the 19th Design Automation Conference
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The increasing size and complexity of integrated circuits has made an efficient data base essential to the operation of an interactive layout system. This paper describes the design of a data base for IC mask data which features rough bit-maps of entities for sorting by location, a routine for the automatic selection of the bit-map regions' boundaries, and a page-filling algorithm which facilitates the separation of dissimilar data between pages. The routine for automatic selection of region boundaries is described in detail.