David J Roberts

Title: The Innovative Contributions of David J Roberts

Introduction

David J Roberts is a notable inventor based in Hollis, NH (US). He has made significant contributions to the field of circuit design and simulation, holding 2 patents that showcase his expertise and innovative thinking. His work primarily focuses on enhancing the performance and reliability of digital circuits.

Latest Patents

One of his latest patents is titled "Concurrent Fault Co-Simulator." This invention describes devices, methods, computer-readable media, and other embodiments for concurrent functional and fault co-simulation of a circuit design. The process involves accessing simulation data for a circuit design composed of multiple machine regions. A selection of faults is made from the simulation data for co-simulation operations, which include both functional simulation and fault simulation. During the functional simulation, a first machine region is identified as associated with at least one fault, leading to the performance of a functional simulation and the identification of a divergence point related to that fault. Subsequently, a fault simulation is conducted using the functional simulation data.

Another significant patent by Roberts is the "Method and Apparatus for Enhancing the Performance of Event Driven Dynamic Simulation of Digital Circuits Based on Netlist Partitioning Techniques." This patent discloses a full-chip level verification methodology that integrates static timing analysis techniques with dynamic event-driven simulation. It allows for the automatic partitioning of a multiple-clock design into various clock domains and asynchronous regions. The methodology verifies the synchronous cores of each clock domain while validating the asynchronous regions through detailed dynamic event-driven simulation.

Career Highlights

David J Roberts is currently employed at Cadence Design Systems, Inc., where he continues to innovate and contribute to advancements in circuit design and simulation technologies. His work has had a profound impact on the industry, particularly in improving the efficiency and accuracy of digital circuit simulations.

Collaborations

Throughout his career, Roberts has collaborated with several talented individuals, including Nadim Khalil and Stuart C Rae. These collaborations have further enriched his work and contributed to the development of innovative solutions in the field.

Conclusion

David J Roberts exemplifies the spirit of innovation in the realm of circuit design and simulation. His patents reflect a deep understanding of the complexities involved in digital circuits and a commitment to enhancing their performance. His contributions continue to influence the industry and inspire future advancements.