Lawrence A Chisvin

Title: The Innovations of Lawrence A. Chisvin

Introduction

Lawrence A. Chisvin is a notable inventor based in Sudbury, MA, who has made significant contributions to the field of computer engineering. With a total of four patents to his name, Chisvin has developed innovative methodologies and circuitry that enhance memory management in computing systems.

Latest Patents

Chisvin's latest patents include a memory subsystem command input queue that features status locations for managing read and write commands from nodes to a shared memory resource on a common data bus. This invention accommodates nodes with various cache configurations, including write-back caches, write-through caches, and nodes without caches. Another significant patent is the combined queue for invalidates and return data in a multiprocessor system. This invention utilizes a pipelined CPU that executes variable-length instructions while referencing memory with different data widths. It employs macroinstruction pipelining, allowing flexibility in instruction execution times and ensuring a wide bandwidth for memory access. The hierarchical cache arrangement increases the likelihood of cache hits, and the use of a write-back cache allows write-back processes to continue even when other accesses are suppressed due to full queues.

Career Highlights

Chisvin has spent a significant portion of his career at Digital Equipment Corporation, where he has been instrumental in advancing computer architecture and memory management technologies. His work has had a lasting impact on the efficiency and performance of computing systems.

Collaborations

Throughout his career, Chisvin has collaborated with notable colleagues, including John K. Grooms and Donald W. Smelser. These collaborations have contributed to the development of innovative solutions in the field of computer engineering.

Conclusion

Lawrence A. Chisvin's contributions to the field of computer engineering through his patents and work at Digital Equipment Corporation highlight his role as a significant innovator. His advancements in memory management and processing efficiency continue to influence the industry today.