Hirohisa Koizumi

Title: Hirohisa Koizumi: Innovator in Optical Disc Technology

Introduction

Hirohisa Koizumi is a notable inventor based in Tamana, Japan. He has made significant contributions to the field of optical disc technology, holding a total of 2 patents. His work has been instrumental in advancing the functionality and efficiency of optical disc apparatuses.

Latest Patents

Koizumi's latest patents include innovations in optical disc apparatuses. One of his patents addresses the use of USB power supply (VBUS) for driving conventional optical disc apparatuses. This invention ensures that the supplied current meets the necessary standards of USB while enhancing the performance of the optical disc apparatus. The apparatus features a spindle motor for rotating the optical disc, a feed motor for shifting the optical pick-up, and an actuator for correcting the position of the object lens. Additionally, a conversion circuit is integrated to control the driving circuit of the spindle motor, allowing for improved operation. Another patent focuses on an optical disc device that includes fixing parts for directly securing the frame of the device to an electronic device, enhancing stability and functionality.

Career Highlights

Throughout his career, Hirohisa Koizumi has worked with prominent companies such as Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His experience in these organizations has contributed to his expertise in optical technologies and innovation.

Collaborations

Koizumi has collaborated with notable colleagues, including Kiyoshi Takeuchi and Hidehito Nakamura. Their joint efforts have furthered advancements in the field of optical disc technology.

Conclusion

Hirohisa Koizumi's contributions to optical disc technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, showcasing the importance of innovation in technology.