Jack J Stiffler

Title: The Innovations of Jack J Stiffler

Introduction

Jack J Stiffler is a notable inventor based in Hopkinton, MA (US), recognized for his contributions to fault-tolerant computer systems. With a total of 14 patents to his name, Stiffler has made significant advancements in maintaining data integrity and processing continuity in computer operations.

Latest Patents

Stiffler's latest patents include a "Remote checkpoint memory system and protocol for fault-tolerant computer." This invention provides a mechanism for maintaining a consistent, periodically updated state in main memory without constraining normal computer operation. It enables a computer system to recover from faults without loss of data or processing continuity. The system consists of a first computer with a processor and input/output elements connected to a main memory subsystem, including a primary element. A second computer features a remote checkpoint memory element, which may include buffer memories and a shadow memory, connected to the main memory subsystem of the first computer. During normal processing, an image of data written to the primary memory element is captured by the remote checkpoint memory element. When a new checkpoint is desired, the previously captured data is used to establish a new checkpointed state in the second computer. In the event of a failure of the first computer, the second computer can be restarted to operate from the last checkpoint established for the first computer. This structure and protocol guarantee a consistent state in main memory, thus enabling fault-tolerant operation.

Another significant patent is the "Main memory system and checkpointing protocol for fault-tolerant." Similar to the previous invention, it maintains a consistent, periodically updated state in main memory, allowing for recovery from faults without data loss. The system includes a checkpoint memory element that captures an image of data written to primary memory during normal processing. When a new checkpoint is desired, the previously captured data is utilized to establish that checkpoint, ensuring a consistent state in main memory.

Career Highlights

Throughout his career, Stiffler has worked with several companies, including Sequoia Systems, Inc. and Texas Micro, Inc. His experience in these organizations has contributed to his expertise in developing innovative solutions for computer systems.

Collaborations

Stiffler has collaborated with notable individuals such as James M Nolan and Michael J Budwey, further enhancing his work in the field of computer technology.

Conclusion

Jack J Stiffler's