Company Filing History:
5 out of 52,751 
1 out of 2,916 
Years Active: 1985-2009
Title: Yasushi Higashiyama: Innovator in Optical and Magnetic Technologies
Introduction
Yasushi Higashiyama is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the fields of optical and magnetic technologies, holding a total of 6 patents. His innovative work has paved the way for advancements in various electronic devices.
Latest Patents
Higashiyama's latest patents include a light receiving element circuit and an optical disk drive. In one embodiment of the light receiving element circuit, a plurality of light receiving elements photoelectrically convert light signals that carry information signals. These elements are supported by first amplification circuits that amplify the electric signals from each light receiving element. A selecting section then selectively outputs one of the amplified signals. A second amplification circuit further amplifies the voltage of the selected signal before supplying it to the outside.
Another notable patent is for a magnetic recording and reproduction apparatus with selectively-enabled features. This apparatus includes a magnetic tape running mechanism that rotates a rotary drum while running a magnetic tape in contact with its circumferential surface. It features multiple erasing magnetic heads for erasing recording signals and recording magnetic heads for recording purposes. The apparatus also includes erasing circuits and recording circuits that can be selectively enabled or disabled, along with rotary transformers and a driving circuit to record information signals onto the magnetic tape.
Career Highlights
Throughout his career, Yasushi Higashiyama has worked with notable companies such as Kabushiki Kaisha Toshiba and Tokyo Shibaura Denki Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in developing advanced technologies.
Collaborations
Higashiyama has collaborated with several talented individuals in his field, including Takanori Furusawa and Shu Chiba. These collaborations have fostered innovation and creativity in his projects.
Conclusion
Yasushi Higashiyama's contributions to optical and magnetic technologies have established him as a key figure in the field of innovation. His patents reflect a commitment to advancing technology and improving electronic devices. His work continues to influence the industry and inspire future inventors.