Hisao Narita

Title: Hisao Narita: Innovator in Digital Multiplexing Reception

Introduction

Hisao Narita, an accomplished inventor based in Sendai, Japan, holds a noteworthy patent in the field of radio communication technology. His innovative work has contributed significantly to the reception of digital multiplexing signals, showcasing his expertise and dedication as an inventor.

Latest Patents

Hisao Narita's most significant patent is a radio receiver designed for the reception of digital multiplexing signals. This invention addresses the challenges that arise when received multi-level orthogonal amplitude signals are not synchronized with local carrier frequency signals. The radio receiver employs adaptive equalization techniques, recognizing data within a specified area on the phase plane of Ich and Qch orthogonal coordinates. By controlling the amplification of demodulated signals to a fixed level and adjusting the phase of the local carrier frequency, the receiver can quickly and stably return to synchronous mode, enhancing its reliability in digital signal processing.

Career Highlights

Throughout his career, Narita has worked at Fujitsu Corporation, where he has played an essential role in the development of advanced communication technologies. His expertise in radio reception engineering has been invaluable in driving innovations within the company, and his patent serves as a testament to his contributions to the field.

Collaborations

Narita has collaborated with numerous talented individuals, including his colleagues Hiroyuki Kiyanagi and Yuitsu Ogata. Together, they have contributed to advancing technology and pushing the boundaries of what is possible in digital communications. Their collective knowledge and effort have led to significant developments in radio technology.

Conclusion

Hisao Narita stands out as a key figure in the innovation landscape of digital multiplexing reception. His patented technology not only showcases his inventive spirit but also highlights the important role of collaboration in achieving technological advancements. With continued work and dedication, Narita's contributions will undoubtedly influence the future of radio communication technologies.