This inventor holds 3 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1988-2001.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1988-2001
Title: Tomoyoshi Shimizu: Innovator in Data Link Layer Processing
Introduction
Tomoyoshi Shimizu is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of data link layer processing, holding a total of 3 patents. His work has been instrumental in advancing technologies that enhance communication systems.
Latest Patents
Shimizu's latest patents include a "Data link layer processor system for a local exchange system." This innovative system comprises a plurality of in-service data link layer processors (DLLPs) and spare DLLPs. The switching between the in-service DLLP and the spare DLLP is achieved by coupling both DLLPs with the transmission line and transferring logical links from the in-service DLLP to the spare DLLP one by one while frame multiplexing the data from the spare DLLP with the data from the in-service DLLP. After all logical links are transferred, a switch decouples the in-service DLLP, leaving the spare DLLP coupled with the transmission line for normal operation.
Another significant patent is the "Simple adapter for multiplexing ISDN terminals." This adapter is designed for an ISDN basic subscriber access system and connects to a subscriber's point-to-multipoint bus. It allows a greater number of terminal equipment (TE) to be connected to the point-to-multipoint bus via S/T interfaces. By checking the type, subaddress, or similar attributes of incoming calls, the adapter can limit the kinds of acceptable calls.
Career Highlights
Tomoyoshi Shimizu is currently employed at NEC Corporation, where he continues to innovate and develop new technologies. His work at NEC has positioned him as a key player in the field of telecommunications and data processing.
Collaborations
Shimizu has collaborated with notable colleagues, including Hiroshi Ikeda and Hatsuho Murata. Their combined expertise has contributed to the successful development of various projects and patents.
Conclusion
Tomoyoshi Shimizu's contributions to data link layer processing and ISDN technology have made a significant impact in the field. His innovative patents and collaborative efforts continue to shape the future of communication systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile