Location History:
- E. Brunswick, NJ (US) (1986 - 1991)
- East Brunswick, NJ (US) (1976 - 1993)
- Glendora, CA (US) (1999 - 2009)
- Portland, OR (US) (2012 - 2014)
- Hillsboro, OR (US) (2021 - 2023)
- North Plains, OR (US) (2023)
Company Filing History:
12 out of 54,664 
2 out of 27 
2 out of 2 
Years Active: 1976-2023
Title: An Insight into the Innovations of Stephen S Chang
Introduction
Stephen S Chang is an accomplished inventor based in Glendora, CA, holding an impressive portfolio of 25 patents. His contributions to technology, especially in the field of virtual machines and cache management, have significantly advanced current practices and methodologies.
Latest Patents
Among his most recent patents, Chang focuses on innovative methods and apparatus for accelerating virtual machine migration. This patent describes a server architecture featuring a host processor paired with a programmable coprocessor. The coprocessor is designed to interact with auxiliary memory, wherein it stores the states of virtual machines (VMs). The significant breakthrough in this patent is the ability of the coprocessor to determine the optimal timing for transferring VM states to a remote server node during live migration. The coprocessor employs a coherent protocol home agent and sophisticated state tracking circuitry that allows it to identify modifications at a granular cache line level, thus reducing data transfer volumes significantly.
Another notable patent addresses the management of cache use requests sent to remote cache devices. The invention includes a snoop request mechanism to check for cached content across multiple remote cache devices. The implementation of a snoop bypass device, which monitors content across a cache line or coarser granularity, enhances efficiency by allowing negative indications without exhausting resources, thus optimizing the data access process.
Career Highlights
Stephen's professional journey includes significant roles at leading technology firms, notably Intel Corporation and Kabi Pharmacia. During his tenure, he has contributed to groundbreaking projects that integrate hardware and software solutions to improve existing technologies.
Collaborations
Throughout his career, Chang has collaborated with distinguished colleagues, including experts Yongde Bao and Pete D Vogt. Together, they have worked on innovative projects that push the boundaries of technology and have contributed to significant advancements in the field.
Conclusion
Stephen S Chang exemplifies the spirit of innovation, blending creativity with technical expertise to develop solutions that enhance system efficiencies. His extensive list of patents showcases a commitment to improving technology in meaningful ways, particularly in the realms of virtual machine management and cache optimization. As technology continues to evolve, Chang's contributions will undoubtedly influence future developments in these areas.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.