Chih-liang ('Eric') Cheng

Title: Chih-liang ('Eric') Cheng: Innovator in Congestion-Driven Placement Methods

Introduction

Chih-liang ('Eric') Cheng is a notable inventor based in Milpitas, CA (US). He has made significant contributions to the field of computer-implemented methods, particularly in the area of congestion-driven placement techniques. His innovative approach addresses the challenges of interconnect congestion in electronic design automation.

Latest Patents

Eric Cheng holds a patent for a "Congestion-driven placement method and computer-implemented." This hierarchical look-ahead congestion-driven placement method is designed to avoid interconnect congestion by balancing available routing resources. When integrated into conventional quadratic programming approaches, it results in only minor increases in run-time while achieving dramatic decreases in congestion. The method anticipates congestion by trading macrocell densities between adjacent regions, estimating them based on the current iteration of cell distribution and net connections. Additionally, it accounts for routing detours caused by large hard macros to enhance accuracy. The adjustments in macrocell density are propagated to neighboring regions at each hierarchical level, revising prior congestion estimates from previous iterations.

Career Highlights

Chih-liang Cheng is currently associated with Avant! Corporation, where he applies his expertise in electronic design automation. His work focuses on improving the efficiency and effectiveness of design processes through innovative methodologies.

Collaborations

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Conclusion

Chih-liang ('Eric') Cheng is a prominent figure in the realm of electronic design automation, with a patent that significantly enhances congestion management in placement methods. His contributions continue to influence the industry positively.