Kousyu Ichikawa

Title: Kousyu Ichikawa and Large-Screen Display Innovation.

Introduction

Kousyu Ichikawa is an inventor associated with Yokohama, Japan, and Hitachi, Ltd. His recorded patent concerns an input interface for large-screen displays, combining a light pen with infrared sensing to capture drawing input.

Latest Patents

Ichikawa’s listed patent is “Input Interface Apparatus for Large Screen Display.” The invention describes a display system with an image signal source, an original image generator, a light-transmission screen, and a means of detecting pointing positions on the screen. A light pen emits infrared rays modulated by the force applied when the user presses it against the screen. The system detects, amplifies, and demodulates those signals before sending them to the image source, allowing the tone and thickness of drawn strokes to be represented. Ichikawa is credited with 1 patent in the information provided.

Career Highlights

Ichikawa’s documented work reflects an interest in interactive display technology. His patented interface links physical pressure from a light pen to the appearance of strokes on a large screen, enabling more expressive on-screen drawing.

Collaborations

The provided information identifies Tetsuo Iwamoto and Keiichiro Tanaka as Ichikawa’s coworkers. It does not specify their roles in the patent or describe particular collaborative projects.

Conclusion

Kousyu Ichikawa’s recorded patent presents a pressure-sensitive infrared light-pen interface designed to make drawing on large-screen displays more expressive.