Yoshihito Kawakami

Title: Innovations of Yoshihito Kawakami

Introduction

Yoshihito Kawakami is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electronics, particularly in LED technology and power supply systems. With a total of three patents to his name, Kawakami's work reflects a commitment to innovation and practical solutions in engineering.

Latest Patents

Kawakami's latest patents include an LED matrix driver ghost image prevention apparatus and method. This invention focuses on LED drivers specifically designed to prevent ghost images in LED matrix displays. The LED driver receives external input and decodes it to produce a time multiplex timing for turning on an LED array. It incorporates a dead time to the outputs, during which the ghost image prevention circuit discharges output stray capacitances to a predetermined level.

Another significant patent is a power supply apparatus featuring a soft start function. This invention enables a startup without any overshoot within an appropriate startup time, regardless of whether the load is heavy or light. Even when the output direct current voltage has not yet risen upon startup, the switch circuit is activated within a count time of the timer. The clamping circuit then clamps the error signal of the error amplifier, preventing excessive signals from entering the PWM circuit. This control mechanism limits the supply power and prevents inrush current from being generated, ensuring a smooth startup.

Career Highlights

Throughout his career, Yoshihito Kawakami has worked with prominent companies such as Panasonic Corporation and Panasonic Semiconductor Asia Pte. Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in electronic technologies.

Collaborations

Kawakami has collaborated with notable colleagues, including Masato Yoshida and Shigenori Arai. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.

Conclusion

Yoshihito Kawakami's contributions to the field of electronics through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, paving the way for future innovations in LED technology and power supply systems.