Company Filing History:
Years Active: 2008-2010
Title: Innovations of Atsushi Tachikawa
Introduction
Atsushi Tachikawa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of telecommunications, particularly in the development of routers and packet transfer technologies. With a total of 3 patents to his name, Tachikawa's work has had a considerable impact on network communication.
Latest Patents
Tachikawa's latest patents include a boundary node router and a SIP server. The boundary node router is designed to determine whether a received packet includes a SIP message and a REGISTER message. If so, it adds its router identifier to the REGISTER message, which includes a user identifier and a user terminal identifier, sent from a user terminal. This message is then forwarded to a SIP server. The SIP server maintains a user management table that stores the user terminal identifier, the router identifier, and a predetermined Quality of Service type associated with each user identifier. Upon receiving a REGISTER message, the SIP server extracts the necessary identifiers and updates them accordingly.
Another significant patent involves a packet transfer apparatus that performs address translation. This apparatus consists of multiple protocol processing units and a switch for managing IP packets among these units. A protocol processing unit connected to an IPv4 network includes an input-side address translator for converting input packet addresses to IPv6 addresses and an output-side address translator for translating IPv6 packets back to IPv4 addresses. This innovative design enhances the efficiency of packet transfer across different network protocols.
Career Highlights
Throughout his career, Atsushi Tachikawa has worked with prominent companies such as Hitachi, Ltd. and Hitachi Communication Technologies, Ltd. His experience in these organizations has allowed him to develop and refine his expertise in telecommunications and networking technologies.
Collaborations
Tachikawa has collaborated with notable colleagues, including Hiroaki Nakazawa and Hiroaki Miyata. These partnerships have contributed to the advancement of his inventions and the successful implementation of his ideas in the industry.
Conclusion
Atsushi Tachikawa's contributions to telecommunications through his innovative patents and collaborations highlight his importance in the field. His work continues to influence the development of network technologies, making him a significant figure in the industry.