Shigeaki Iwasa

Title: **Shigeaki Iwasa: Innovator in Memory Technologies**

Introduction

Shigeaki Iwasa, a prominent inventor based in Kanagawa, Japan, has made significant contributions to the field of computer memory technologies. With a total of 10 patents to his name, Iwasa's work continues to influence advancements in processing and memory systems. His innovative spirit drives him to create effective solutions that enhance computational efficiency and performance.

Latest Patents

Iwasa's latest patents include a range of advanced memory technologies, including:

1. **Virtual Address Cache Memory, Processor and Multiprocessor** - This invention features a virtual address cache memory that comprises a TLB virtual page memory designed for rewriting entry data upon changes to a Translation Lookaside Buffer (TLB). The data memory is structured to hold cache data utilizing a virtual page tag or a page offset as a cache index. It also contains a cache state memory that maintains a cache state linked with the cache index, and both a first and a second physical address memory to handle address rewriting during TLB updates.

2. **Effective Address Cache Memory, Processor and Effective Address Caching Method** - This effective address cache memory retains entry data linked to an effective page tag derived from a process's effective address. It generates a hit signal when the tags match, facilitated by a data memory that holds cache data utilizing the effective page tag. The accompanying cache state memory ensures the cache's integrity corresponding to the cache index.

Career Highlights

Iwasa has had a notable career, having worked at leading technology companies such as Kabushiki Kaisha Toshiba and International Business Machines Corporation (IBM). His tenure in these organizations has allowed him to develop and refine his innovative ideas, contributing to the continuous evolution of memory technologies.

Collaborations

Throughout his career, Iwasa has collaborated with talented professionals, including Seiji Maeda and Hiroo Hayashi. These partnerships have played a crucial role in bringing his inventive concepts to fruition, highlighting the collaborative nature of innovation in the technology sector.

Conclusion

Shigeaki Iwasa stands out as a visionary inventor whose work in memory technologies has paved the way for numerous advancements in computing. His patents reflect a deep understanding of memory systems and their critical role in processing efficiency. As he continues his innovative journey, the impact of his contributions will likely resonate within the industry for years to come.