Shigemasa Yoshida

Title: Shigemasa Yoshida: Innovator in Servo Information Technology

Introduction

Shigemasa Yoshida is a notable inventor based in Kamakura, Japan. He has made significant contributions to the field of servo information technology, holding a total of 3 patents. His work has been instrumental in advancing methods for recording and detecting servo information, which are crucial for various technological applications.

Latest Patents

Yoshida's latest patents include a method of recording and detecting servo information for positioning. This innovative method involves recording magnetization inversion data at different frequencies as part of servo information before and after an erasing gap between a data sector and a servo sector. The time interval between pulses read out from these magnetization inversion data is detected using a gap detection timer, allowing for precise timing in reading out servo information. Another significant patent is the velocity control unit of a detecting head. This unit consists of a differentiation circuit that differentiates a reference velocity signal and feeds it via an analog switch to a first-order lag circuit, generating a feedforward signal. The analog switch is controlled by a constant velocity/deceleration detecting circuit, ensuring optimal performance during the head's operation.

Career Highlights

Throughout his career, Shigemasa Yoshida has worked with prominent companies, including Mitsubishi Electric Corporation and Mitsubishi Denki K.K. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in the field.

Collaborations

Yoshida has collaborated with esteemed colleagues such as Shirou Ogura and Keiichi Nishikawa. These partnerships have fostered a creative environment that has led to the development of advanced technologies in servo information systems.

Conclusion

Shigemasa Yoshida's contributions to the field of servo information technology are noteworthy. His innovative patents and collaborations with industry leaders highlight his role as a significant figure in this domain. His work continues to influence advancements in technology, showcasing the importance of innovation in driving progress.