Fumihito Arai

Title: Fumihito Arai: Innovator in Video Camera Technology

Introduction

Fumihito Arai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of video camera technology, holding a total of 3 patents. His work focuses on improving exposure control in video cameras, enhancing the quality of captured images.

Latest Patents

Arai's latest patents include a method and apparatus for controlling exposure of video cameras. This exposure control apparatus receives a video signal from a scene pick-up image sensor and performs divided brightness measuring for an image free. In accordance with the brightness distribution or a change amount of a scene obtained by the divided brightness measuring, the adjustment speed for a diaphragm is switched. In another embodiment, a scene brightness value for use as the exposure control is corrected to obtain smooth exposure control for continuous scenes. Additionally, scene pick-up by panning is detected by a built-in acceleration sensor in the video camera. Therefore, if the video camera is moved abruptly, the exposure control is made slowly.

Another significant patent is the automatic exposure control apparatus and method for electronic still images. This invention involves a pre-measurement of the subject brightness performed with a preset aperture value and shutter speed. A main measurement is then conducted with a combination of aperture value and shutter speed determined based on the pre-measurement results. This method remarkably reduces the number of changing aperture values and the associated time lag while achieving accurate exposure control.

Career Highlights

Fumihito Arai is currently employed at Fuji Photo Film Company, Limited, where he continues to innovate in the field of imaging technology. His work has been instrumental in advancing the capabilities of video cameras, making them more user-friendly and efficient.

Collaborations

Arai collaborates with fellow inventor Yoshihiko Mori, contributing to the development of cutting-edge technologies in the imaging sector.

Conclusion

Fumihito Arai's contributions to video camera technology through his innovative patents have significantly impacted the industry. His work continues to enhance the quality and functionality of imaging devices, making him a key figure in this field.