Location History:
- Toyokawa, JP (1983)
- Tokohama, JP (1988)
- Yokohama, JP (1985 - 1989)
Company Filing History:
Years Active: 1983-1989
Title: Innovations of Toshifumi Shibuya
Introduction
Toshifumi Shibuya is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of magnetic recording and digital signal processing. With a total of 9 patents to his name, Shibuya continues to push the boundaries of technology.
Latest Patents
One of his latest patents is a rotary head type magnetic recording and reproducing apparatus and method. This invention involves a method of producing a tracking control signal in a rotary head type magnetic recording and reproducing apparatus. It enables proper tracking by utilizing the tracking control signal. The invention records first and second tracking signals on local portions of each odd-numbered track, while the first tracking signal and a third tracking signal are recorded on local portions of each even-numbered track. This arrangement ensures that the second tracking signals on two adjacent odd-numbered tracks do not overlap with each other, and the third tracking signals on two adjacent even-numbered tracks also remain distinct. Additionally, upon scanning a track, crosstalk signals are detected from two adjacent tracks simultaneously with the reproduction of the tracking signals, allowing for the production of a tracking control signal. Another notable patent is an apparatus for reproducing digital signals from a digital audio recording. This apparatus generates a clock signal used for processing a digital signal, which adjusts its frequency division ratio when the transmission speed of the digital signal changes.
Career Highlights
Toshifumi Shibuya is currently employed at Hitachi, Ltd., where he continues to innovate and develop new technologies. His work has significantly impacted the fields of magnetic recording and digital signal processing.
Collaborations
Shibuya has collaborated with notable coworkers such as Takao Arai and Takaharu Noguchi, contributing to various projects and advancements in technology.
Conclusion
Toshifumi Shibuya's contributions to technology through his patents and work at Hitachi, Ltd. highlight his role as a leading inventor in the field. His innovative approaches to magnetic recording and digital signal processing continue to influence the industry.