G - Physics – 06 – F
Patent
G - Physics
06
F
354/236
G06F 17/50 (2006.01)
Patent
CA 1270067
INTEGRATED ELECTRICAL DESIGN SYSTEM WITH AUTOMATIC CONSTRAINT SATISFACTION ABSTRACT OF THE DISCLOSURE An electrical design system is described which integrates many analysis and synthesis tools in an environment of top-down circuit layout. The system allows electrical design in numerous technologies, including nNOS, CMOS, bipolar, printed circuit boards and others. Technologies and analysis or synthesis tools may be added or deleted easily, and different technologies may be employed in a single design. The system includes a database manager which maintains all information regarding the design of the circuit, and which is accessed by all of the analysis and synthesis tools to enable them to examine and modify the design. The database itself is structured as a network of electrically connected and geometrically described components. Each component in the database is considered a node, and connections among components are considered as arcs. Changes are permitted only to nodes, and constraints are imposed only upon arcs. When components are changed, the effects of the changes are propagated to surrounding components by the arcs. In this manner the database manager insures that the circuit remains properly connected throughout the design process while allowing the propagation of changes up and down the hierarchy.
502874
Fairchild Semiconductor Corporation
Rubin Steven M.
Smart & Biggar
LandOfFree
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