Donald J Hejna, Jr

Title: Innovations of Donald J Hejna, Jr.

Introduction

Donald J Hejna, Jr. is an accomplished inventor based in Sunnyvale, CA. He has made significant contributions to the field of technology, particularly in information retrieval and scheduling systems. With a total of 3 patents, Hejna's work reflects a deep understanding of user interaction and system efficiency.

Latest Patents

One of his notable patents is for a method and apparatus for random access information retrieval utilizing user-defined labels. This invention allows users to define labels related to stored information and create a hierarchical data structure. The system includes a keypad designed for easy navigation through the hierarchical structure, enabling users to insert, delete, or replay labels and stored information.

Another significant patent focuses on efficient scheduling in a multiprocessor system. This invention introduces a method where additional bits are added to each entry in the process table to indicate the warmth of the cache concerning schedulable units. The scheduler utilizes these cache warmth bits to optimize the scheduling of processes, ensuring that they are executed on the processors that previously handled them, thereby enhancing efficiency.

Career Highlights

Throughout his career, Donald J Hejna, Jr. has worked with prominent companies such as Rolm Systems and Sun Microsystems, Inc. His experience in these organizations has contributed to his innovative approach to technology and problem-solving.

Collaborations

He has collaborated with notable individuals in the industry, including Bruce R Musicus and Andrew S Crowe. These partnerships have likely influenced his work and expanded his contributions to the field.

Conclusion

Donald J Hejna, Jr. stands out as a significant figure in the realm of technology innovation. His patents demonstrate a commitment to improving user experience and system performance. His contributions continue to impact the industry positively.