Location History:
- Fujisawa, JA (1978)
- Fujisawa, JP (1979)
Company Filing History:
Years Active: 1978-1979
Title: Innovations by Tatsuru Miyoshi
Introduction
Tatsuru Miyoshi is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of telecommunications, particularly in the development of advanced ringing control and speech path systems. With a total of 2 patents, his work has had a lasting impact on the industry.
Latest Patents
Miyoshi's latest patents include a "Ringing Control Apparatus" and a "Speech Path System." The Ringing Control Apparatus features a bidirectional switching circuit that connects to a ringing source, generating an alternating current of large amplitude. This apparatus delivers an interrupted ringing signal to a called subscriber while preventing surge voltage by controlling the timing of the ringing voltage and current. The Speech Path System is designed for telephone exchanges with crosspoint switches and incorporates semiconductor switching devices. It includes a memory circuit for storing operating conditions, a high impedance drive circuit, and a speech current supply circuit, ensuring efficient communication within the network.
Career Highlights
Miyoshi is currently employed at Hitachi, Ltd., where he continues to innovate and develop new technologies. His work has been instrumental in enhancing the functionality and reliability of telecommunications systems.
Collaborations
Throughout his career, Miyoshi has collaborated with talented individuals such as Takafumi Kojima and Takuji Mukaemachi. These collaborations have fostered a creative environment that has led to the successful development of his patented technologies.
Conclusion
Tatsuru Miyoshi's contributions to telecommunications through his innovative patents demonstrate his expertise and commitment to advancing the field. His work continues to influence the industry and inspire future innovations.