Somei Endo

Title: Somei Endo: Innovator in Optical Recording Technology

Introduction

Somei Endo is a notable inventor based in Miyagi, Japan. He has made significant contributions to the field of optical recording technology. With a total of 3 patents to his name, Endo's work has advanced the capabilities of optical media.

Latest Patents

Endo's latest patents include innovations such as an optical recording medium and a master disc for its preparation. One of his key inventions is an optical recording medium that features a wobbling groove extending along the tracks. This design allows for a wobbling signal to be provided at a sufficiently high level, even when the track pitch is reduced to enhance recording density. The medium achieves a practically adequate recording-reproducing characteristic, including jitter performance. The wobbling groove depth is carefully calibrated within the range of &lgr;/2.90 n to &lgr;/2.15 n, where &lgr; represents the wavelength of the light beam used for recording and reproducing signals, and n is the refractive index of the substrate. Additionally, the ratio of the width of the wobbling groove to the track pitch falls within the range of 25.0% to 45.5%.

Career Highlights

Endo is currently employed at Sony Corporation, where he continues to innovate in optical recording technologies. His work has been instrumental in enhancing the performance and reliability of optical media.

Collaborations

Somei Endo has collaborated with notable colleagues, including Toshihiro Akimori and Manabu Sato. Their combined expertise has contributed to the advancement of optical recording technologies.

Conclusion

Somei Endo's contributions to optical recording technology have made a significant impact in the field. His innovative patents reflect a commitment to enhancing the capabilities of optical media.