Katsuhiko Yamatsu

Title: Katsuhiko Yamatsu: Innovator in Communication Technology

Introduction

Katsuhiko Yamatsu is a prominent inventor based in Fukuoka, Japan. He has made significant contributions to the field of communication technology, holding a total of 8 patents. His innovative work has paved the way for advancements in communication methods and apparatuses.

Latest Patents

Yamatsu's latest patents include a communication method and communication apparatus. This apparatus consists of a receiver, a memory, a processor, and a transmitter. The receiver is designed to receive a route information frame and a first frame that is not the route information frame. The memory holds a route information table that records route information included in the route information frame. When the route information table does not include the source address of the first frame, the processor associates the source address with the address of a transfer-source apparatus that has transferred the first frame to the receiver, registering these addresses in a registration table. To transmit a second frame addressed to a destination apparatus not recorded in the route information table, the processor obtains the address of a transfer-source apparatus registered in association with the address of the destination apparatus. The transmitter then transmits the second frame to the address obtained by the processor. Another notable patent involves an apparatus that includes a memory and a processor configured to generate a first common key whose key value varies based on a first elapsed time. This apparatus encrypts a data frame and transmits the encrypted data frame to another apparatus.

Career Highlights

Yamatsu has worked with notable companies such as Fujitsu Corporation and Fujitsu Semiconductor Limited. His experience in these organizations has contributed to his expertise in communication technologies and innovations.

Collaborations

Some of his coworkers include Koki Mie and Yuji Higashihara. Their collaboration has likely fostered an environment of innovation and creativity in their projects.

Conclusion

Katsuhiko Yamatsu is a distinguished inventor whose work in communication technology has led to several patents and advancements in the field. His contributions continue to influence the way communication systems are developed and implemented.