Cadence Design Systems, Inc.

Harsh Deshmane

Roland Ruehl

Henry K Yu

Elias Lee Fallon

Regis R Colwell

Hui Xu

Harindranath Parameswaran

Yinnie Lee

Sanjib Ghosh

Joshua Alexander Baudhuin

Timothy Rosek

Pardeep Juneja

Anjna Khanna

Simon Simonian

Mathew Koshy

Udayan Anand Gumaste

Disclosed encompasses method, system, computer program product for implementing interactive checking of constraints. Various embodiments bridge schematic design environment and layout environment with a binder mapping process and utilize connectivity information from the schematic design to identify constraint violations early in the physical design stage. The method identifies or creates a layout and identifies or generates an object for a modification process. The method may take snapshot(s) of the design database or may use one or more logs for restoring the design database. The method then identifies or creates scratch pad(s) and performs modification process on the object to generate a change. The method uses scratch pad(s) and trigger(s) to perform constraint checking during the modification process to provide interactive feedback in response to the modification process before committing the change to the persistent database.

Methods, systems, and articles of manufacture for implementing interactive, real-time checking or verification of complex constraints

Disclosed are methods and systems for implementing constraint and connectivity aware physical designs. The method or system provides a connectivity-aware environment to implement electronic designs. For example, the method interactively determines whether an electronic design complies with various constraints by using connectivity information in a nearly real-time manner while the electronic design is being created in some embodiments. The method or system uses the connectivity information provided by a connectivity engine or specified by designers to present feedback to a user as to whether a newly created object or a newly modified object complies or violates certain relevant constraints in an interactive manner or in nearly real-time without having to perform such constraints checking in batch mode. The method further enables one to implement electronic designs by using connectivity information without performing extraction on layouts or rebuilding nets.

Methods, systems, and computer program product for implementing electronic designs with connectivity and constraint awareness

The present invention presents a hybrid approach for manufacturability analysis that integrates both a rules-based approach and a models-based approach. For example, a rules-based analysis can be used to optimize the performance of a model-based analysis. The rules analysis can be used to identify specific areas of a layout that can then be analyzed in detail using models. This approach provides numerous advantages. It allows the models-based analysis tool to concentrate upon portions of the layout that requires greater attention and allocate fewer resources towards the areas less critical to the yield.

System and method for using rules-based analysis to enhance models-based analysis

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Sunnyvale, CA, United States of America

Harsh Deshmane