Location History:
- Tokyo, JP (2014)
- San Jose, CA (US) (2017 - 2023)
Company Filing History:
7 out of 8,683 
1 out of 1,287 
1 out of 16 Years Active: 2014-2023
Title: Innovator Shuhei Tanakamaru: Pioneering SSD Performance and Error Recovery
Introduction
Shuhei Tanakamaru is a prominent inventor based in San Jose, California, known for his significant contributions to the field of solid-state devices (SSDs). With an impressive portfolio of 9 patents, Tanakamaru continues to advance technology through innovative approaches to performance and error management in SSDs.
Latest Patents
Tanakamaru's latest patents exemplify his expertise in optimizing SSD functionality. One of his notable inventions focuses on controlling SSD performance by managing the number of active memory dies. This method improves performance by regulating the depth of the request queue, involving the monitoring of both a first and second request within the SSD. By determining the actual time interval between requests and assessing the number of active memory dies, this innovation allows for delays in processing requests to enhance overall efficiency.
Another groundbreaking patent addresses the recovery from hard decoding errors by remapping log likelihood ratio values read from NAND memory cells. This technology assesses hard errors resulting from unsuccessful decoding and utilizes a low-density parity check (LDPC) decoder to optimize data recovery. By estimating bit error rates and identifying hard error regions through single-level cell readings, Tanakamaru’s invention can intelligently adjust log likelihood ratio mappings to mitigate errors, ensuring the integrity of data read from NAND memory.
Career Highlights
Tanakamaru has worked with leading organizations, including Seagate Technology and The University of Tokyo. His experiences in these esteemed institutions have allowed him to cultivate a deep understanding of SSD technologies and develop practical applications for his findings.
Collaborations
Throughout his career, Tanakamaru has collaborated with notable colleagues such as Erich Franz Haratsch and Dana Lynn Simonson. These partnerships exemplify his commitment to teamwork and innovation, contributing to the advancement of technology in the storage domain.
Conclusion
In conclusion, Shuhei Tanakamaru stands out as a key inventor in the SSD space, with a robust patent portfolio that showcases his dedication to improving device performance and overcoming decoding challenges. His innovative solutions are vital to the ongoing evolution of solid-state technology, solidifying his reputation as a leading figure in the industry.