Tatsuo Maruyama

Title: Tatsuo Maruyama and Telephone Call Processing Innovation.

Introduction

Tatsuo Maruyama is an inventor associated with Tokyo, Japan, and Kokusai Denshin Denwa Co., Ltd. His work includes a patent for a telephone call processing system designed to support operator assistance while making efficient use of switching resources.

Latest Patents

Maruyama’s listed patent, “Call Processing System with an Operator Assistance in a Telephone,” describes a switching system with three operating modes. In the first mode, the system connects the operator to either the calling or called subscriber through a board trunk. In the second mode, it establishes a direct connection between the subscribers while also connecting the operator to monitor their conversation. In the third mode, it clears the board-trunk connection while maintaining the subscribers’ direct connection. This approach limits the board trunk’s involvement to initial connection and monitoring operations, helping increase the exchange system’s capacity. The supplied information lists 1 patent for Maruyama.

Career Highlights

Maruyama’s documented patent work focuses on telephone switching and operator-assisted call handling. The invention addresses how a switching system can support operator intervention without keeping a board trunk occupied throughout a call.

Collaborations

The supplied information identifies Yoshikazu Ikeda and Hiromichi Mori as Maruyama’s coworkers. It does not specify their roles in the patent or describe particular collaborative contributions.

Conclusion

Tatsuo Maruyama’s listed invention presents a practical approach to operator-assisted telephone calls by separating initial connection, monitoring, and direct subscriber communication.