Shinji Kumataka

Title: The Innovations of Shinji Kumataka

Introduction

Shinji Kumataka is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of telecommunications, particularly in the development of cordless key telephone systems. With a total of 4 patents to his name, Kumataka's work has had a lasting impact on communication technology.

Latest Patents

Kumataka's latest patents include innovative designs for cordless key telephone systems. One of his patents describes a cordless key telephone system having a zone switching function. This system allows a cordless station to establish a two-way radio channel with an access unit in its service zone. It constantly monitors the field intensity of the established channel and transmits a zone switching signal when the field intensity falls below a specified level. This feature indicates that the cordless station is transitioning from one zone to another.

Another notable patent is for a cordless key telephone system with a multiple tenant facility. In this system, radio-frequency connections are established between exchange lines and cordless stations in response to a call request. The system transmits a ringing signal that contains the identification of the line where the call is terminated. Each cordless station is equipped with an array of line keys and indicators, allowing it to examine tenant data and activate the appropriate line indicator based on the incoming call.

Career Highlights

Throughout his career, Shinji Kumataka has worked with prominent companies in the telecommunications industry. He has been associated with NEC Corporation and Nippon Telegraph and Telephone Corporation, where he contributed to various innovative projects. His work has been instrumental in advancing the capabilities of cordless communication systems.

Collaborations

Kumataka has collaborated with several talented individuals in his field. Notable coworkers include Kosuke Hashimoto and Noboru Saegusa, who have also made significant contributions to telecommunications technology.

Conclusion

Shinji Kumataka's innovative work in the field of cordless key telephone systems has established him as a prominent inventor in Japan. His patents reflect a deep understanding of communication technology and a commitment to enhancing user experience. His contributions continue to influence the evolution of telecommunications.