Company Filing History:
Years Active: 2003-2008
Title: Junji Nagaoka: Innovator in Optical Disk Technology
Introduction
Junji Nagaoka is a prominent inventor based in Takatsuki, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 9 patents. His work has advanced the capabilities of optical devices, making them more efficient and effective.
Latest Patents
Nagaoka's latest patents include an innovative optical disk with plural signal mark positions in a direction substantially perpendicular to tracks. This optical disk device features a light source that emits light, along with light converging means that selectively position a signal mark at various locations. Each signal mark forming region is surrounded by two border lines, which are parallel to the tracks, effectively dividing the area between adjacent tracks.
Another notable patent is for an optical disk apparatus that includes a method for calculating the amount of lens shift. This apparatus has an optical head with a lens that converges light onto an optical disk, along with a photodetector that detects the reflected light. A tracking error signal is generated for tracking control, while a disk tilt is detected to indicate the tilt of the optical head relative to the disk. This allows for precise calculations of lens shift based on the generated tracking error signal and detected disk tilt.
Career Highlights
Junji Nagaoka is associated with Matsushita Electric Industrial Co., Ltd., where he has contributed to various projects and innovations in optical technology. His work has been instrumental in enhancing the performance of optical devices, making them more reliable and user-friendly.
Collaborations
Throughout his career, Nagaoka has collaborated with notable colleagues, including Seiji Nishiwaki and Kazuo Momoo. These collaborations have fostered a creative environment that has led to groundbreaking advancements in optical disk technology.
Conclusion
Junji Nagaoka's contributions to optical disk technology have made a lasting impact on the industry. His innovative patents and collaborations with esteemed colleagues highlight his dedication to advancing technology in this field.