Ryohei Uchida is a prominent inventor based in Himeji, Japan. He has made significant contributions to the field of magnetic video technology, holding a total of 7 patents. His innovative work has paved the way for advancements in video reproduction systems.

Latest Patents

Uchida's latest patents include a magnetic video reproducing apparatus that features a still picture reproducing capability. This apparatus employs a well-known rotational two-head system, a helical scan system, and an azimuth system. It incorporates a position detecting means for identifying the positions of the two heads and a dropout detecting means for monitoring the dropout of the reproduced signal output. Additionally, a time difference detecting circuit is included to measure the time difference between the outputs from the position and dropout detecting means. A time period converting circuit is also part of the design, which converts the detected time difference into an output signal that drives a capstan shaft motor, ensuring that any noise zone due to signal dropout aligns with the head changeover on the screen.

Another notable patent is a control apparatus for a transistor motor. This invention consists of an addition reference setting circuit, positive and negative voltage addition circuits, and a positive/negative voltage addition circuit. The system is designed to produce reference values and manage the feedback voltages to ensure that the output voltages of the hall-effect devices are consistent with the control signal. This innovation has been confirmed to drastically mitigate torque ripple in the motor.

Career Highlights

Uchida is currently employed at Mitsubishi Denki Kabushiki Kaisha, a leading company in the electronics and technology sector. His work at Mitsubishi has allowed him to focus on developing cutting-edge technologies that enhance video reproduction and motor control systems.

Collaborations

Throughout his career, Uchida has collaborated with notable colleagues, including Tatsuo Yamasaki and Mitsuru Kitano. These partnerships have contributed to the successful development of his innovative technologies.

Conclusion

Ryohei Uchida's contributions to magnetic video technology and motor control systems highlight his role as a significant inventor in the field. His patents reflect a commitment to innovation and excellence, making a lasting impact on the industry.

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