Company Filing History:
Years Active: 1998-2007
Title: Yumi Ishii: Innovator in Memory Device Technology
Introduction
Yumi Ishii is a prominent inventor based in Yokohama, Japan. She has made significant contributions to the field of memory device technology, holding a total of 8 patents. Her innovative work has paved the way for advancements in data management and memory control systems.
Latest Patents
One of Yumi Ishii's latest patents is a method of writing, erasing, and controlling memory for memory devices. This invention involves transferring data from a host computer to a memory device, where it is written into sectors with addresses decoded by a decode table. Old data that needs updating is either erased or marked with erase flags. At predetermined times, necessary data is evacuated to primary memory media, while unnecessary data indicated by erase flags is erased in units of predetermined memory size. Additionally, any defective parts of the memory media are marked with a defect flag and replaced by an alternate area. The decode table is then rewritten to reorganize the memory area effectively.
Career Highlights
Yumi Ishii is currently employed at Fujitsu Corporation, where she continues to innovate and develop new technologies. Her work has been instrumental in enhancing the efficiency and reliability of memory devices.
Collaborations
Yumi collaborates with talented coworkers, including Shinpei Komatsu and Tomohiro Hayashi, who contribute to her projects and share her vision for advancing technology.
Conclusion
Yumi Ishii's contributions to memory device technology exemplify her dedication to innovation and excellence. Her patents reflect her expertise and commitment to improving data management systems.