Hiroaki Ashiwa

Title: Innovations of Hiroaki Ashiwa

Introduction

Hiroaki Ashiwa is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of optical information recording technology. With a total of two patents to his name, Ashiwa's work has advanced the capabilities of optical discs and recording systems.

Latest Patents

Ashiwa's latest patents include an innovative optical information recording medium. This medium features a substrate, a ROM layer, a RE layer, an intermediate layer, and a light transmitting layer. The RE layer serves as an information recording layer, allowing for easy identification of disc types and facilitating the sharing of recording and reproducing apparatuses with various optical discs. Additionally, outdated data on the ROM layer can be updated on the RE layer while maintaining an Internet connection. Another significant patent involves a focus optical system for optical discs. This system adjusts the positional relationship between a cylindrical lens and a 4-division detector to suppress the effects of interference fringes in reflected light, enhancing the accuracy of focus servo systems.

Career Highlights

Ashiwa has worked with prominent companies such as Sharp Corporation and Memory-Tech Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Some of his notable coworkers include Hideharu Tajima and Atsushi Etoh. Their collaboration has likely fostered advancements in the projects they have worked on together.

Conclusion

Hiroaki Ashiwa's contributions to optical information recording technology demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving optical disc technology and enhancing user experience.