Nobuhiko Kawai

Title: Nobuhiko Kawai: Innovator in Phase Modulation Technology

Introduction

Nobuhiko Kawai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of telecommunications, particularly in the area of phase modulation technology. With a total of 2 patents, Kawai's work has had a lasting impact on the industry.

Latest Patents

Kawai's latest patents include a transmitting apparatus and a receiving apparatus based on phase modulation. One of his notable inventions is a digital type VSB modulation apparatus. In this invention, Kawai developed a method to generate a VSB modulation signal from a digital baseband signal. This involves creating an in-phase component of a modulation signal with a frequency spectrum that includes a high-frequency component at half the level of its low-frequency counterpart. Additionally, an orthogonal component of the modulation signal is generated, which also features a high-frequency component at half the level of its low-frequency component. These components are then multiplied with carrier signals to produce a carrier in-phase component and a carrier orthogonal component. Finally, these components are synthesized to obtain a VSB modulation signal.

Career Highlights

Throughout his career, Nobuhiko Kawai has worked with notable companies such as Nippon Hoso Kyokai and Kabushiki Kaisha Toshiba. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in telecommunications.

Collaborations

Kawai has collaborated with esteemed colleagues, including Masatoshi Hamada and Yasuo Takahashi. Their combined expertise has fostered innovation and advancement in their respective fields.

Conclusion

Nobuhiko Kawai's contributions to phase modulation technology and telecommunications are noteworthy. His inventions continue to influence the industry, showcasing his dedication to innovation and excellence.