Mitsuo Isobe

Title: The Innovative Contributions of Mitsuo Isobe

Introduction

Mitsuo Isobe is a prominent inventor based in Osaka, Japan, known for his significant contributions to visual image signal processing technology. With a total of 14 patents to his name, Isobe has made remarkable advancements in the field, particularly in the development of cathode ray tube control apparatuses.

Latest Patents

One of Isobe's latest patents is a visual image signal processing apparatus that utilizes arithmetic operations. This apparatus features an overlaying unit that overlays a brightness reference signal at a predetermined position during the fly-back period of an input visual image signal. It also includes a first clamping unit that clamps the output from the overlaying unit at a specific clamping voltage. Additionally, a detecting unit applies the output from the first clamping unit to the driving electrode of a cathode ray tube while detecting the beam current based on the brightness reference signal. Furthermore, a second clamping unit controls the predetermined clamp voltage based on the detected beam current.

Another notable patent is the cathode ray tube control apparatus, which consists of a phosphor display screen and three electron guns that emit red, green, and blue electron beams. This apparatus includes a shadow mask positioned between the electron guns and the display screen, along with index phosphors deposited on the shadow mask. These phosphors have at least two line elements diagonal to the horizontal scanning direction of the electron beam, generating a signal according to the electron beam scan. The apparatus also features a detector for detecting beam crossing points over the index phosphor and a correction circuit for adjusting the deflection of the electron beam based on the detected points.

Career Highlights

Mitsuo Isobe has had a distinguished career, working with notable companies such as Matsushita Electric Industrial Co., Ltd. and Nippon Hoso' Kyokai. His work in these organizations has significantly influenced the development of technologies related to visual image processing and display systems.

Collaborations

Throughout his career, Isobe has collaborated with esteemed colleagues, including Yuichi Ninomiya and Masanori Hamada. These collaborations have fostered innovation and contributed to the advancement of technology in their respective fields.

Conclusion

Mitsuo Isobe's innovative contributions to visual image signal processing and cathode ray tube technology have left a lasting impact on the industry. His extensive patent portfolio and collaborations with