Makoto Matsushima

Title: The Innovations of Makoto Matsushima

Introduction

Makoto Matsushima is a prominent inventor based in Hyogo-ken, Japan. He has made significant contributions to the field of electronics, particularly in the development of circuits that enhance the efficiency and functionality of various devices. With a total of 10 patents to his name, Matsushima continues to push the boundaries of innovation.

Latest Patents

One of his latest inventions is a pulse width modulation (PWM) signal generating circuit. This circuit outputs a stable PWM signal that allows for the increasing and decreasing of a duty ratio at a predetermined rate within a specified period. This innovation does not require an improvement in the process capacity of a CPU, making it more efficient compared to conventional PWM signal generating circuits. The circuit consists of multiple elements that output digital signals, with a first counter circuit that periodically changes the PWM signal into an active state. A second counter circuit then changes the active state into an inactive state within each cycle, effectively managing the active-to-inactive time period.

Another notable patent is a DC converter with halt mode setting means. This invention aims to prevent over-current occurrences while minimizing the increase in circuit size. The DC converter includes a semiconductor switch and a clock generator that outputs a clock signal to control the on/off timing of the switch. Additionally, a drive circuit allows the switch to remain in a continuous-on state according to halt mode requirements, regardless of the clock signal.

Career Highlights

Matsushima is currently employed at Ricoh Company, Ltd., where he applies his expertise in electronics to develop innovative solutions. His work has significantly impacted the efficiency of electronic devices, making them more reliable and effective.

Collaborations

Throughout his career, Matsushima has collaborated with notable colleagues, including Katsuhiko Manabe and Tomonari Katoh. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.

Conclusion

Makoto Matsushima's contributions to the field of electronics through his innovative patents demonstrate his commitment to advancing technology. His work continues to inspire future generations of inventors and engineers.