Location History:
- Kamakura, JP (1979 - 1981)
- Kanagawa, JP (1988 - 1993)
Company Filing History:
Years Active: 1979-1993
Title: The Innovations of Toshihiko Numakura
Introduction
Toshihiko Numakura is a prominent inventor based in Kamakura, Japan. He is known for his significant contributions to the field of video technology, particularly in anti-piracy systems. With a total of 11 patents to his name, Numakura has made a lasting impact on the industry.
Latest Patents
One of his latest innovations is an anti-piracy video tape system that incorporates anti-piracy components. This system features an anti-piracy signal generating circuit designed to produce anti-piracy signal components on a video signal reproduced by a first video unit. The signal components are interleaved to a frequency in the band of the video signal, in accordance with the video signal components. Additionally, there is a signal superimposing circuit that intermittently overlays the anti-piracy signal components on the luminance signal, first color difference signal, and second color difference signal. Another notable patent is an apparatus for recording low and high band components of a chrominance signal. This magnetic recording and reproducing apparatus is designed for composite color television signals, where the luminance signal and high band component of the chrominance subcarrier signal are frequency modulated, recorded, and reproduced. The low band component of the chrominance subcarrier signal is frequency down-converted to improve the resolution of the color signal component.
Career Highlights
Toshihiko Numakura has spent a significant part of his career at Sony Corporation, where he has been able to apply his innovative ideas and technical expertise. His work has contributed to advancements in video technology and has helped shape the future of the industry.
Collaborations
Throughout his career, Numakura has collaborated with notable colleagues, including Kazuo Yamagiwa and Jun Hirai. These partnerships have fostered a creative environment that has led to groundbreaking innovations in video technology.
Conclusion
Toshihiko Numakura's contributions to the field of video technology are noteworthy and have had a profound impact on the industry. His innovative patents and collaborations with esteemed colleagues highlight his dedication to advancing technology. His work continues to influence the way we experience video today.