Tsuyoshi Yoshimura

Title: Tsuyoshi Yoshimura: Innovator in Circuit Design

Introduction

Tsuyoshi Yoshimura is a notable inventor based in Sumoto, Japan. He has made significant contributions to the field of circuit design, holding a total of 2 patents. His work focuses on enhancing the performance and efficiency of electronic circuits.

Latest Patents

Yoshimura's latest patents include a level shift circuit and a charge pump circuit with slice level control. The level shift circuit invention prevents an offset when the supply voltage changes. It consists of a differential amplification circuit, a current generation circuit, a capacitor, and a holding circuit. An input signal from the optical pickup is fed into the non-inversion input terminal of the differential amplification circuit. By activating a first switch, a feedback loop is established, allowing the circuit to perform a level shift. The voltage charged in the capacitor is then retained by the holding circuit. Subsequently, by deactivating the first switch and activating a second switch, the voltage held by the holding circuit is applied to the non-inversion input terminal to achieve the desired level shift.

The charge pump circuit invention addresses the challenge of reducing the rise time of an output current, even when the input signal is of high frequency. It features PMOS transistors with gates connected to each other, and the gate of one PMOS is linked to its drain. A supply potential (Vdd) is applied to the sources of the PMOS transistors, forming a current mirror circuit. The circuit includes first and second switching elements and a first constant-current source connected to the drain of the PMOS. The connection point of the first and second switching elements is linked to an output terminal, while the drain of the PMOS connects to the first constant-current source through a third switching element and to a second constant-current source through a fourth switching element.

Career Highlights

Throughout his career, Tsuyoshi Yoshimura has worked with prominent companies in the semiconductor industry, including Semiconductor Components Industries, LLC and Sanyo Semiconductor Co., Ltd. His experience in these organizations has contributed to his expertise in circuit design and innovation.

Collaborations

Yoshimura has collaborated with various professionals in the field, including his coworker Taichiro Kawai. Their joint efforts have likely led to advancements in their respective projects and innovations.

Conclusion

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