Junichi Usui

Title: Junichi Usui: Innovator in Video Signal Processing

Introduction

Junichi Usui is a notable inventor based in Fukuroi, Japan. He has made significant contributions to the field of video signal processing, holding 2 patents that showcase his innovative approach to technology.

Latest Patents

One of his latest patents is an "Apparatus and method for discriminating color format." This invention involves a system that discriminates color formats by separating luminance and color signals from a broadcasting signal. The apparatus includes a direct signal path that provides an output of the broadcasting signal without separating the signals. It also features a relay device that selectively relays the broadcasting signal to various processing paths based on detected color format variations.

Another significant patent is the "Video signal processing circuit providing optimum signal level for inverse gamma correction." This circuit utilizes nearly 100% of the dynamic range to achieve desired contrast and brightness characteristics. It includes an RGB amplifier, A/D converters, inverse gamma correcting circuits, and a gain control signal generator that adjusts the RGB amplifier based on peak levels of the primary color signals.

Career Highlights

Throughout his career, Junichi Usui has worked with prominent companies such as Pioneer Electronic Corporation and Pioneer Corporation. His experience in these organizations has contributed to his expertise in video technology and signal processing.

Collaborations

He has collaborated with notable individuals in the field, including Shuji Ogawa and Hirofumi Kawaguchi. These partnerships have likely enhanced his innovative capabilities and broadened his impact on the industry.

Conclusion

Junichi Usui's contributions to video signal processing through his patents and collaborations highlight his role as a significant inventor in the technology sector. His work continues to influence advancements in the field.