This inventor holds 2 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1994.
Company Filing History:
Years Active: 1994
Title: Tsutomu Shiomitsu: A Pioneer in ISDN Communication Technologies
Introduction
Tsutomu Shiomitsu, an accomplished inventor based in Yokohama, Japan, has significantly contributed to the field of communication technologies. With a total of two patents to his name, his innovations focus on improving communication systems, particularly in the Integrated Services Digital Network (ISDN) domain.
Latest Patents
One of Tsutomu Shiomitsu's most notable patents is the "Maintenance Communication Control System in an ISDN Service." This invention establishes a maintenance link according to a Link Access Procedure on the D (LAPD) between first and second terminal units, facilitating the transmission of subscribers' packet information. To ensure seamless communication, both terminal units feature communication state control units that manage the consistency of the communication state by exchanging control information via the maintenance link.
Another significant contribution is his patent for an "ISDN D Channel Congestion Control Method." This method involves the use of either a Digital Subscriber Line Circuit Common (DLCC) or a Signaling Controller (SGC) that notifies an SGC or a Packet Subscriber System (PSS) of D channel congestion based on a predefined protocol. This innovative approach aids in effectively managing congestion in communication controlling apparatuses.
Career Highlights
Tsutomu Shiomitsu currently works for Fujitsu Corporation, a leading technology company known for its advanced electronic and IT solutions. His expertise and innovations in communication systems have made a noticeable impact within the company and the industry as a whole.
Collaborations
Throughout his career, Tsutomu has collaborated with talented colleagues, including Sumie Morita and Takashi Hatano, contributing to various projects and enhancing the overall efficiency of their work in communication technologies.
Conclusion
Tsutomu Shiomitsu stands out as a notable inventor whose contributions to ISDN communication systems have proven essential in advancing technology in this field. With his innovative patents and collaborations at Fujitsu Corporation, he continues to shape the future of communication technologies.