Location History:
- Itami, JP (1994)
- Tokyo, JP (2000 - 2002)
Company Filing History:
6 out of 21,351 
3 out of 177 
Years Active: 1994-2002
Title: Innovations of Yoshiji Inoue
Introduction
Yoshiji Inoue is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical information reproduction, holding a total of 6 patents. His work has advanced the technology used in optical disks and related devices.
Latest Patents
One of his latest patents is a method of and apparatus for optical information reproduction. This invention features a tracking servo system that utilizes a tracking error signal in the phase difference method. It corrects the offset that varies depending on the pit depth and lens position, resulting in a more accurate tracking error detection. The phase comparison means are designed to receive different sets of input signals during offset correction and tracking error signal detection. This innovation allows for the offset in the tracking error signal to be obtained as a voltage value, which is then corrected through repeated learning control.
Another notable patent is for an optical information reproduction device and signal processing circuit. This device is designed to reproduce information from an optical disk medium that includes an identification information area and a user information area. The information is reproduced using a sum signal and a difference signal from a split photodetector. This invention enhances the accuracy of information retrieval from optical disks.
Career Highlights
Yoshiji Inoue has worked with several notable companies, including Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Electric Engineering Company, Limited. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Throughout his career, Inoue has collaborated with esteemed colleagues such as Takehiko Umeyama and Masayoshi Shimamoto. These partnerships have fostered a creative environment that has led to significant advancements in their field.
Conclusion
Yoshiji Inoue's contributions to optical information reproduction technology are noteworthy. His innovative patents and collaborations have played a crucial role in advancing the capabilities of optical devices. His work continues to influence the industry and inspire future innovations.