Kazukuni Ugai

Title: Kazukuni Ugai: Innovator in Frame Multiplexing and Ethernet Protection

Introduction

Kazukuni Ugai is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of telecommunications, particularly in the areas of frame multiplexing and network protection. With a total of 2 patents to his name, Ugai continues to push the boundaries of innovation in his field.

Latest Patents

One of Ugai's latest patents is a frame multiplexing device. This device includes a plurality of counters, each assigned to different lines. A flow monitoring unit is responsible for monitoring the frame flow of each line by referring to the respective counter. It adds the length of a passed frame to the counter's value. Additionally, a bandwidth managing unit cyclically selects one of the lines for frame input and subtracts a predetermined token value from the selected line's counter. An output control unit then stores the frame in a queue buffer and outputs it at the frame multiplexer’s output rate.

Another significant patent by Ugai focuses on the protection and automatic restoration of Ethernet ring networks. This data relay apparatus stores identification information for self-identification. A blocking unit prevents loop paths by blocking a port if the data relay apparatus is a master node. If a link failure occurs, the apparatus blocks the port connected to that link. Upon restoration, a comparing unit checks the identification information of connected apparatuses, and a determining unit decides if the data relay apparatus should be set as the master node based on the comparison results.

Career Highlights

Kazukuni Ugai is currently employed at Fujitsu Corporation, a leading company in information technology and telecommunications. His work at Fujitsu has allowed him to develop innovative solutions that enhance network efficiency and reliability.

Collaborations

Throughout his career, Ugai has collaborated with notable colleagues, including Osamu Tsurumi and Kenichi Kawarai. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Kazukuni Ugai is a distinguished inventor whose work in frame multiplexing and Ethernet protection has made a significant impact on telecommunications. His innovative patents reflect his commitment to enhancing network technology and efficiency.