Yoshifumi Shiraki

Title: Yoshifumi Shiraki: Innovator in Acoustic Technology

Introduction

Yoshifumi Shiraki is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of acoustic technology, holding a total of 3 patents. His work focuses on enhancing the accuracy of acoustic measurements and improving communication technologies.

Latest Patents

Shiraki's latest patents include an "Acoustic feature computing apparatus, acoustic feature computing method, and program." This invention provides a technique for accurately measuring the acoustic characteristics of a parametric array. It involves a first calculation unit that computes a complex amplitude of an optical phase at a specific frequency, based on changes in the optical phase caused by demodulated sound. Additionally, a second calculation unit calculates a function value at a designated point and a line integral value along the optical path. A third calculation unit then determines the complex amplitude of the demodulated sound using the previously calculated values.

Another notable patent is the "Receiving apparatus, receiving method, and program." This invention reduces the sampling frequency required for symbol timing recovery compared to previous technologies. The receiver facilitates visible light communication with a transmitter, generating a sequence of received signals based on the intensity of the electrical signal corresponding to the received optical signal. A parameter estimation unit then estimates various parameters, including the maximum luminance value and synchronization shift, from the distribution of received signals.

Career Highlights

Yoshifumi Shiraki has worked with notable companies such as Nippon Telegraph and Telephone Corporation and NTT Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in acoustic technology.

Collaborations

Shiraki has collaborated with esteemed colleagues, including Yutaka Kamamoto and Takehiro Moriya. Their joint efforts have contributed to advancements in their respective fields.

Conclusion

Yoshifumi Shiraki is a distinguished inventor whose work in acoustic technology has led to significant advancements. His patents reflect a commitment to innovation and improvement in communication systems.