Seiichi Yamaguchi

Title: Seiichi Yamaguchi: Innovator in Transmission Technology

Introduction

Seiichi Yamaguchi is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of transmission technology, holding 2 patents that enhance the quality of real-time media transmission.

Latest Patents

One of his latest inventions is a transmission parameter control device. This apparatus improves the transmission quality of real-time media in a route that includes a wireless section. It connects to a terminal via a network and to a mobile terminal through a wireless link. The device features an obtaining part that gathers quality parameters indicating transmission quality from downlink and uplink signals. Additionally, it has an adjustment part that modifies the transmission parameter value based on the quality parameter.

Another significant patent is an automatic frequency control unit. This unit synchronizes a received carrier signal with a simulated carrier signal to control the center frequency automatically. The received signal includes a first synchronous code pattern and a second synchronous code pattern. The phase of the received signal is determined by sweeping the center frequency of the simulated signal. The sweep is reduced upon detecting frame synchronization and fixed when multiframe synchronization is achieved.

Career Highlights

Seiichi Yamaguchi is currently employed at Fujitsu Corporation, where he continues to innovate in the field of transmission technology. His work has had a substantial impact on improving communication systems.

Collaborations

He has collaborated with notable coworkers, including Hiroaki Watanabe and Tomoyuki Ueno, contributing to advancements in their respective fields.

Conclusion

Seiichi Yamaguchi's contributions to transmission technology through his patents demonstrate his commitment to innovation. His work continues to influence the quality of real-time media transmission, showcasing the importance of advancements in this area.