Shinichiro Hashimoto

Title: Innovations of Shinichiro Hashimoto

Introduction

Shinichiro Hashimoto is a notable inventor based in Koganei, Japan. He has made significant contributions to the field of telecommunications, particularly in voice signal processing. With a total of 3 patents, his work has advanced the way voice signals are transmitted and analyzed.

Latest Patents

One of Hashimoto's latest patents is the "Voice Band Multiplex Transmission System." This innovative system allows for the simultaneous transmission of a voice signal and additional input information over the same voice circuit. By frequency modulating two sine-wave signals that do not bear any harmonic relation to each other, the system effectively superimposes the modulated outputs on the voice signal for transmission. On the receiving end, the pitch frequency of the voice signal is extracted, enabling the removal of the voice component and allowing for the recovery of the original input information.

Another significant patent is the "Speech Signal Fundamental Period Extractor." This device receives a residual value signal from a speech analyzer and processes it to extract the fundamental period of the speech signal. By filtering out high-frequency components and quantizing the signal, the extractor achieves more accurate results while minimizing the use of high-speed elements and reducing the number of components required.

Career Highlights

Shinichiro Hashimoto is associated with Nippon Telegraph and Telephone Public Corporation, where he has been instrumental in developing advanced telecommunications technologies. His work has not only contributed to the company's reputation but has also had a lasting impact on the industry.

Collaborations

Throughout his career, Hashimoto has collaborated with notable colleagues, including Nobuhiko Kitawaki and Hiromi Nagabushi. These collaborations have fostered innovation and have led to the development of groundbreaking technologies in voice signal processing.

Conclusion

Shinichiro Hashimoto's contributions to telecommunications through his innovative patents have significantly advanced the field of voice signal processing. His work continues to influence the industry and pave the way for future innovations.