Yuji Obana

Title: Yuji Obana: Innovator in Transmission and Optical Technologies

Introduction

Yuji Obana is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the fields of transmission devices and optical digital coherent receivers. With a total of 7 patents to his name, Obana continues to push the boundaries of technology.

Latest Patents

One of his latest inventions is a transmission device designed to multiplex a first signal with multiple second signals, each having a lower rate compared to the first signal. This device includes several memories to store the second signals, a selector to choose one of the signals, and a controller to manage the read and selection timing. This innovative approach allows for effective rearrangement and shift processing of the second signals based on cross-connect settings and multiplexing positions.

Another notable patent is for an optical digital coherent receiver. This invention features an Automatic Level Control (ALC) processing unit that adjusts the signal level of outputs from an adaptive equalizer to a target value. The ALC unit generates a histogram to monitor amplitude values and determines a level adjustment coefficient to ensure optimal performance.

Career Highlights

Yuji Obana is currently employed at Fujitsu Corporation, where he applies his expertise in developing advanced technologies. His work has been instrumental in enhancing the efficiency and effectiveness of communication systems.

Collaborations

Obana has collaborated with notable colleagues, including Masanori Hiramoto and Hiromichi Makishima. Their combined efforts have contributed to the success of various projects within the company.

Conclusion

Yuji Obana is a distinguished inventor whose work in transmission devices and optical technologies has made a significant impact in the field. His innovative patents and collaborations continue to shape the future of technology.