Yukio Tsuda

Title: Innovations of Yukio Tsuda

Introduction

Yukio Tsuda is a notable inventor based in Machida, Japan. He has made significant contributions to the field of electronics, particularly in the development of tuning apparatuses and phase-locked loop circuits. With a total of 4 patents to his name, Tsuda's work has had a considerable impact on modern technology.

Latest Patents

One of his latest patents is a tuning apparatus of phase-locked loop type. This invention features a voltage-controlled oscillator that acts as a local oscillator in a tuning circuit. It includes a programmable divider that receives the output signal from the voltage-controlled oscillator, a reference frequency signal generating circuit, and a phase comparator. The design allows for these components to be integrated into a single integrated circuit, with a separate control circuit supplying control data to the programmable divider. Additionally, the integrated circuit contains a memory for storing control data, which is supplied serially from the control circuit and then provided in parallel to the programmable divider.

Another significant patent is the phase-locked loop circuit, which is utilized in a frequency synthesized receiver. This circuit employs a reference signal oscillator, a voltage-controlled oscillator, a programmable divider, a phase comparator, and a low-pass filter as its local oscillator. The tuning process to achieve a desired frequency is managed by controlling the dividing ratio of the programmable divider through an up/down counter connected to a shift register. This innovative design allows for rapid frequency sweeping at predetermined steps.

Career Highlights

Yukio Tsuda is currently employed at Sony Corporation, a leading company in the electronics industry. His work at Sony has allowed him to further develop his inventions and contribute to cutting-edge technology in consumer electronics.

Collaborations

Throughout his career, Tsuda has collaborated with notable coworkers such as Takaaki Yamada and Yoshio Osakabe. These collaborations have likely enriched his work and led to further advancements in their respective fields.

Conclusion

Yukio Tsuda's contributions to the field of electronics through his innovative patents demonstrate his expertise and commitment to advancing technology. His work continues to influence the development of modern electronic devices.