Cadence Design Systems, Inc.

Simon Simonian

Henry K Yu

Roland Ruehl

Elias Lee Fallon

Regis R Colwell

Hui Xu

Harindranath Parameswaran

Yinnie Lee

Sanjib Ghosh

Joshua Alexander Baudhuin

Pardeep Juneja

Timothy Rosek

Harsh Deshmane

Anjna Khanna

Gilles S C Lamant

Jeff Taraldson

Johannes Franz Xaver Grad

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 is a method and system for visualizing legal locations of edges and dimensions for an object being placed or edited in the layout. During the design process, visual indicators may be provided to the user to indicate the legal locations at which edges of an object may be placed in the layout. Gravitation and/or snapping may be provided automatically identify and/or move the edges to the legal locations. However, the user can control whether and under what circumstances the gravitation and/or snapping will occur. In this way, the designer does not need to manually place the edges of every single object, which is especially helpful for objects that are intended to have an edge at a legal location. Upon a design choice by the designer, the objects can be edited so that an edge does not need to immediately comply with a design rule.

Method and system for implementing an improved interface for designing electronic layouts

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

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San Jose, CA, United States of America

Simon Simonian