Toshiro Mayuzumi

Title: Toshiro Mayuzumi: Innovator in Class-D Power Amplification

Introduction

Toshiro Mayuzumi is a notable inventor based in Hamamatsu, Japan. He has made significant contributions to the field of audio technology, particularly in the development of class-D power amplifiers. With a total of 2 patents to his name, Mayuzumi's work has had a considerable impact on the industry.

Latest Patents

One of Mayuzumi's latest patents is a class-D power amplifier that features a unique design. This amplifier includes a switching power source section, a synchronization signal generation section, and a class-D power amplifying section. The synchronization signal generation section extracts a clock signal from the switching power source section, which operates at a frequency that is 'n' times that of a first frequency. The class-D power amplifying section is equipped with a comparator that compares an input signal with a feedback signal, along with a second switching section that manages the power source. Additionally, a filter section smoothes the output signal, while a combining section generates the feedback signal by combining a delayed output signal with the clock signal.

Another significant patent by Mayuzumi is for a common mode choke coil apparatus. This device consists of four coils wound in the same direction on a core. The hot-side outputs of two class-D amplifiers connect to the first ends of two coils, while the ground-side outputs connect to the first ends of the remaining two coils. This design allows for both single-end and BTL connections, enhancing the versatility of the amplifiers.

Career Highlights

Toshiro Mayuzumi is currently employed at Yamaha Corporation, a leading company in the audio equipment industry. His work at Yamaha has allowed him to innovate and refine audio technologies, contributing to the company's reputation for high-quality sound products.

Collaborations

Mayuzumi has collaborated with talented coworkers such as Takeshi Togawa and Takashi Handa. Their combined expertise has fostered an environment of innovation and creativity within their projects.

Conclusion

Toshiro Mayuzumi is a distinguished inventor whose contributions to class-D power amplification have advanced audio technology. His patents reflect a deep understanding of electronic design and innovation.