Hiroaki Katsurai

Title: Innovations of Hiroaki Katsurai

Introduction

Hiroaki Katsurai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical communication, holding a total of 14 patents. His work has advanced the technology used in optical systems, making them more efficient and effective.

Latest Patents

Katsurai's latest patents include an optical communication system, control method, and optical subscriber line terminal apparatus. This invention involves an optical communication system where an optical line terminal and an optical network unit are connected by an optical communication line. When the optical network unit receives a first activation signal from the optical line terminal while in a sleep state, it executes activation processing to transition to an active state. It then notifies the optical line terminal of the activation time required for this process. The optical line terminal transmits activation signals accordingly and begins data transmission after the specified activation time has elapsed.

Another notable patent is the optical power supply system, which includes a power supply optical communication device that supplies power using an optical signal. This system features a power reception optical communication device that is driven by power obtained from the transmitted optical signal. The power supply optical communication device transmits the optical signal for power supply, while the power reception device converts this optical signal into an electric signal for further use.

Career Highlights

Katsurai has worked with notable organizations such as Nippon Telegraph and Telephone Corporation and Kyoto University. His experience in these institutions has allowed him to develop and refine his innovative ideas in optical communication technology.

Collaborations

Throughout his career, Katsurai has collaborated with esteemed colleagues, including Tomoaki Yoshida and Hideyuki Nosaka. These partnerships have contributed to the advancement of his research and inventions.

Conclusion

Hiroaki Katsurai's contributions to optical communication technology through his patents and collaborations highlight his role as a leading inventor in the field. His work continues to influence advancements in communication systems, showcasing the importance of innovation in technology.