Tatsunori Usugi

Title: Innovations of Tatsunori Usugi

Introduction

Tatsunori Usugi is a prominent inventor based in Hamura, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His work focuses on improving circuit designs and calibration methods, which are essential for enhancing the performance of electronic devices.

Latest Patents

Among his latest patents are the skew adjustment circuit, semiconductor device, and skew calibration method. The skew adjustment circuit features flip flop circuits that take in input signals in response to first clock signals. It includes a clock phase adjustment circuit that adjusts the phases of second clock signals based on a reference clock signal and output signals from the flip flop circuits. Additionally, a phase interval detection circuit detects the phase interval between the first clock signals based on a reference value, while a phase interval adjustment circuit ensures that phase intervals become equal between the second clock signals. This innovative design allows for precise calibration and improved signal integrity.

Another notable patent involves a phase locked loop and CDR circuit. In this design, frequency-divided clocks with a phase difference are inputted to phase comparators for comparison with a reference clock. The outputs of these comparators are weighted based on the phase comparison results, allowing for effective phase adjustment of the feedback clock. This method not only enhances performance but also reduces power consumption, making it a valuable advancement in semiconductor technology.

Career Highlights

Tatsunori Usugi is currently employed at Hitachi, Ltd., where he continues to innovate and develop cutting-edge technologies. His expertise in circuit design and calibration has positioned him as a key figure in the semiconductor industry.

Collaborations

Throughout his career, Usugi has collaborated with notable colleagues, including Kouzaburou Kurita and Takemasa Komori. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Tatsunori Usugi's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor in the field. His work continues to influence advancements in electronic devices, showcasing the importance of innovation in technology.