Yoshiyuki Otsuka

Title: Innovations of Yoshiyuki Otsuka

Introduction

Yoshiyuki Otsuka is a notable inventor based in Akishima, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 5 patents. His work focuses on enhancing data recording quality while ensuring power efficiency.

Latest Patents

Otsuka's latest patents include an innovative optical disk drive designed to pursue power saving while assuring data recording quality. This optical disk drive features a servo processor equipped with a low frequency equalizer, a high frequency equalizer, a limiter, and an adder. The limit voltage value of the limiter is controlled by a command from a system controller, allowing it to be greater during data recording than in the regeneration period. The output from the adder is utilized as a tracking drive signal or a focus drive signal.

Another significant patent is for an optical disk device that writes data onto an optical disk with a wobble track. This device includes an optical pickup that irradiates laser light for writing and replaying data. It also converts return light into an electrical signal. A filter extracts the wobble component from the return light signal, while a processor detects track deviation based on the phase of this wobble component. This allows for precise control of tracking during data writing.

Career Highlights

Yoshiyuki Otsuka is currently associated with Teac Corporation, where he continues to innovate in optical disk technology. His work has been instrumental in advancing the capabilities of optical disk drives and devices.

Collaborations

Otsuka has collaborated with notable coworkers such as Mitsumasa Kubo and Shinichi Fujisawa, contributing to the development of cutting-edge technologies in their field.

Conclusion

Yoshiyuki Otsuka's contributions to optical disk technology through his patents reflect his commitment to innovation and quality. His work continues to influence the industry and enhance data recording technologies.