Location History:
- Kawasaki, JP (1982 - 1987)
- Tokyo, JP (1987)
Company Filing History:
Years Active: 1982-1987
Title: Masahiro Sawada: Innovator in Drive Circuits and Recording Systems
Introduction
Masahiro Sawada is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of drive circuits for brushless DC motors and recording systems for information discs. With a total of 6 patents to his name, Sawada continues to push the boundaries of innovation in his field.
Latest Patents
One of Sawada's latest patents is a drive circuit for brushless DC motors. This innovative circuit is designed to generate torque in both acceleration and deceleration directions, making it particularly effective for portable devices such as electronic still picture cameras. The circuit utilizes a power amplifier with an output stage composed of complementarily connected transistors, which are connected to each end of the stator coils. This design allows for precise control of the input potentials of the power amplifiers, enabling the regulation of current flow through the stator coils.
Another notable patent is his disc recording system with speed control. This system is engineered for recording information on various types of information recording discs, including magnetic and optical discs. It features velocity control means that maintain a predetermined rotation velocity and synchronizing signal phase shifting means that adjust the phase of the synchronizing signal of the recorded signal. This technology ensures that the disc rotates at a consistent velocity, enhancing the quality and reliability of the recorded information.
Career Highlights
Masahiro Sawada is currently associated with Nippon Kogaku K.K., a company renowned for its advancements in optical and imaging technologies. His work at the company has allowed him to develop cutting-edge technologies that have applications in various electronic devices.
Collaborations
Throughout his career, Sawada has collaborated with notable colleagues, including Masaya Okita and Tadashi Ota. These partnerships have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.
Conclusion
Masahiro Sawada's contributions to the fields of drive circuits and recording systems exemplify his commitment to innovation. His patents reflect a deep understanding of electrical engineering and a dedication to enhancing technology in everyday devices. As he continues to innovate, Sawada remains a key figure in the advancement of modern technology.