Yukio Otaka

Title: **Yukio Otaka: Innovations in Electronic Circuits**

Introduction

Yukio Otaka, an inventive mind hailing from Tokorozawa, Japan, has made significant contributions to the field of electronics. With a total of two patents to his name, Otaka has shown remarkable ingenuity, particularly in the realm of crystal oscillators and solar-powered electronic timepieces.

Latest Patents

One of his notable patents is for a **crystal oscillator circuit using CMOSFETs**. This innovative circuit incorporates an oscillator section designed with a resonating part and an amplifying section utilizing a CMOSFET. It features a reference current source circuit responsible for producing a reference current that dictates the bias current for the amplifying section. A unique control signal generator circuit adjusts the reference current source circuit to enhance the bias current during non-oscillation periods. This design optimizes the power consumption of the oscillator circuit by enabling low driving source voltage while ensuring stable oscillation without dependency on source voltage variations.

Another significant invention is his patent for an **electronic timepiece**. This device utilizes electric power generated by a solar cell, which is stored in an accumulator. The system integrates an electrically controllable switch responsible for charging the accumulator device. Through a voltage comparison mechanism, this switch determines whether to allow charging based on the voltages from the solar cell and the accumulator. This clever design prevents reverse current flow and eliminates voltage drop during charging, thus greatly improving charging efficiency.

Career Highlights

Yukio Otaka works at Citizen Watch Company, Ltd., where his innovative work in electronic circuits aligns with the company's focus on advanced timekeeping technologies. His career at Citizen has allowed him to develop cutting-edge solutions that enhance product performance and efficiency.

Collaborations

During his tenure at Citizen, Otaka has collaborated with esteemed colleagues such as Rikoku Nakamura and Shigeru Morokawa. Together, they have fostered a creative environment that has led to numerous technological advancements in the field of electronics.

Conclusion

As an inventor, Yukio Otaka continues to leave his mark in the world of electronic innovations. His contributions through patents reflect a commitment to improving technology and efficiency in electronic devices, particularly in the realm of timekeeping and circuit design. His work, in partnership with talented colleagues, sets a remarkable standard for future inventions in this evolving field.