Tadashi Okada

Title: Innovations of Tadashi Okada

Introduction

Tadashi Okada is a notable inventor based in Hadano, Japan. He has made significant contributions to the field of image processing and printing technology. With a total of three patents to his name, Okada's work has had a lasting impact on the industry.

Latest Patents

One of his latest patents is an information print system and image processing apparatus. This invention features a personal computer equipped with a print image developing means and a data compression means that includes a fixed rate compression. The color printer associated with this system has various components, such as a data extension means, a color correction means, a gamma correction means, a first halftoning means, an image area segmentation means, and a second halftoning means. This innovation allows for the transmission time of a print image to be shortened to less than a constant time, while also eliminating the need for an enormous memory for extension, thus enabling the production of a low-cost printer.

Another significant patent is the distributed PWM halftoning unit and printer. This invention realizes high-speed, high-density, and high-gradation halftoning in a laser printer through multi-value implementation. It employs clustered dot concentrated dither halftoning, known as a sub-matrix method, and PWM distributing gradation among multiple halftone dots with minimal memory and circuit requirements. The process involves shortening the value of the difference between an input gradation value and a threshold value, while generating a threshold array from an extended threshold pattern.

Career Highlights

Throughout his career, Tadashi Okada has worked with prominent companies, including Hitachi, Ltd. His expertise in image processing and printing technology has positioned him as a key figure in the industry.

Collaborations

Okada has collaborated with notable coworkers such as Eiji Yoshino and Tatsuki Inuzuka. Their combined efforts have contributed to advancements in the field of printing technology.

Conclusion

Tadashi Okada's innovations in image processing and printing technology have significantly influenced the industry. His patents reflect a commitment to enhancing efficiency and reducing costs in printing solutions.