Ikumi Minema

Title: Ikumi Minema: Innovator in Video Technology

Introduction

Ikumi Minema is a notable inventor based in Funabashi, Japan. She has made significant contributions to the field of video technology, holding 2 patents that showcase her innovative spirit and technical expertise.

Latest Patents

One of her latest patents is a dc-dc converter for video apparatus. This invention is designed to convert first to second dc voltages, specifically for video equipment. It features a self-excited oscillation circuit that produces a clock signal, which is controlled in response to a control signal. The circuit includes a pulse width modulation component that adjusts the duty ratio of the clock signal based on the second dc voltage. Additionally, a switching circuit operates in response to the pulse-width-modulated clock signal to manage the first dc voltage. The output is then rectified and smoothed to generate the second dc voltage. This design effectively prevents switching noise from disrupting the reproduced image by synchronizing oscillation with the vertical synchronizing signal of the video signal.

Another significant patent is an automatic white balance circuit for color TV cameras. This circuit arrangement includes a process amplifier that inputs primary color signals and a luminance signal from an image sensor. It outputs color difference signals that correspond to the differences between the primary color signals and the luminance signal, with amplitudes determined by gain control signals. A balance control circuit generates these gain control signals to maintain white balance. The detecting circuit identifies when the image sensor's field of vision is predominantly one color, producing a hold signal to maintain the gain control signals until the condition changes.

Career Highlights

Ikumi Minema is currently employed at the Victor Company of Japan, Limited, where she continues to innovate in the field of video technology. Her work has significantly impacted the development of video apparatus, enhancing the quality and functionality of these devices.

Collaborations

Throughout her career, Ikumi has collaborated with talented individuals such as Hiroshi Ichimura and Wataru Katase. These partnerships have fostered a creative environment that encourages the exchange of ideas and technological advancements.

Conclusion

Ikumi Minema is a pioneering inventor whose contributions to video technology have made a lasting impact. Her innovative patents reflect her dedication to improving the functionality and quality of video apparatus.