Hideho Koyama

Title: The Innovations of Hideho Koyama

Introduction

Hideho Koyama is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology. His work focuses on improving the efficiency and functionality of integrated circuits.

Latest Patents

Koyama holds a patent for a semiconductor integrated circuit and its operating method. This invention enables a calibration operation for detecting motor speed without relying on digital correction from an external CPU. The calibration process involves calculating a comparison reference value based on the back EMF detection signal from a back EMF detector circuit. This occurs when zero current flows through a motor and when the arm is fixed. The semiconductor integrated circuit effectively calculates the comparison reference value from two key values: the first value, which corresponds to the back EMF detection signal when no current flows, and the second value, which responds to the non-zero current. The invention enhances the accuracy of motor speed detection by adjusting the gain of an internal amplifier in the back EMF detector circuit.

Career Highlights

Koyama is currently employed at Renesas Electronics Corporation, where he continues to innovate in the semiconductor field. His work has been instrumental in advancing technologies that rely on precise motor control and detection.

Collaborations

Throughout his career, Koyama has collaborated with esteemed colleagues such as Minoru Kurosawa and Kichiya Itagaki. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Hideho Koyama's contributions to semiconductor technology exemplify the impact of innovative thinking in engineering. His patent for a semiconductor integrated circuit showcases his commitment to enhancing motor speed detection methods. Koyama's work continues to influence the industry and inspire future innovations.