Haruo Shigematsu

Title: Haruo Shigematsu: Innovator in CRT Technology

Introduction

Haruo Shigematsu is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of display technology, particularly in cathode ray tube (CRT) devices. With a total of 2 patents, his work has focused on improving image quality and contrast in CRT displays.

Latest Patents

Shigematsu's latest patents include a CRT display device designed to enhance brightness and contrast. This invention aims to improve the visibility of images by reducing noise in low gradation levels. The device utilizes a video signal modulation circuit to modulate the video signal, ensuring that the driving voltage remains low in areas of low gradation. This innovation results in a noticeable improvement in image quality.

Another significant patent involves a display apparatus that monitors a threshold level for controlling a dynamic focusing circuit. This apparatus includes a CRT with an electron gun and a dynamic focusing circuit that produces a dynamic focusing voltage. The system is designed to lower the dc voltage supplied to the dynamic focusing circuit when the brightness signal exceeds a certain threshold, thereby enhancing the overall display performance.

Career Highlights

Haruo Shigematsu is associated with Mitsubishi Denki Kabushiki Kaisha, a leading company in the electronics industry. His work at Mitsubishi has allowed him to focus on advancing CRT technology and contributing to the development of high-quality display systems.

Collaborations

Shigematsu has collaborated with notable coworkers such as Yoshitomo Nakamura and Akinori Heishi. Their combined expertise has contributed to the successful development of innovative display technologies.

Conclusion

Haruo Shigematsu's contributions to CRT technology have significantly impacted the field of display systems. His innovative patents reflect a commitment to enhancing image quality and performance in electronic displays.