Eiji Okamura

Title: Eiji Okamura: Innovator in Graphic Display Technology

Introduction

Eiji Okamura is a notable inventor based in Owariasahi, Japan. He has made significant contributions to the field of graphic display technology, holding a total of 2 patents. His work has been instrumental in advancing the capabilities of graphic display apparatuses.

Latest Patents

One of Okamura's latest patents is the "Filled Shaped Generating Apparatus." This apparatus is designed for filling the interior of a shape displayed on a raster scan CRT, which reads out a refresh memory. It includes a memory that stores information about starting and ending points for filling. The writing of a filling color code into the refresh memory is initiated and terminated based on these points, while being inhibited at the contour of the shape. The filling direction is perpendicular to the raster scanning of the CRT.

Another significant patent is the "Graphic Display Apparatus with a Vector Generating Circuit." This apparatus generates a vector and comprises registers for storing a vector discrimination value, positive and negative increments, and flip-flops for magnitude information. An address counter of a refresh memory counts up or down according to the contents of the flip-flops. A control circuit updates the vector discrimination value, allowing for high-speed vector generation. The design of the registers and flip-flops in two stages enables the preparation of data for the next vector while the current one is being generated.

Career Highlights

Eiji Okamura is currently employed at Hitachi, Ltd., where he continues to innovate in the field of graphic display technology. His work has had a lasting impact on the industry, contributing to advancements in display systems.

Collaborations

Throughout his career, Okamura has collaborated with notable coworkers such as Kiyoshi Umezawa and Toshihisa Aoshima. These collaborations have further enriched his contributions to the field.

Conclusion

Eiji Okamura's innovative work in graphic display technology has led to significant advancements in the industry. His patents reflect a deep understanding of the technical challenges in graphic displays, and his contributions continue to influence the field.