Koki Tsutsumida

Title: Koki Tsutsumida: Innovator in Semiconductor Technology

Introduction

Koki Tsutsumida is a prominent inventor based in Ome, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on enhancing the functionality and reliability of integrated circuits.

Latest Patents

One of Tsutsumida's latest patents is a semiconductor integrated circuit that features a ring oscillator formed by a variable delay circuit. This innovation allows the ring oscillator to oscillate during the test operation of the variable delay circuit. It determines the normality of the variable delay circuit based on whether the ring oscillator meets specific monotonic increase and linearity conditions. Another notable patent is for a semiconductor device designed to analyze the position and cause of failures in integrated circuits that utilize a polyphase clock. This device includes an error detecting unit that identifies operational issues, a clock state holding unit that retains phase information, and an output unit that provides this information when an error is detected.

Career Highlights

Koki Tsutsumida is currently employed at Hitachi, Ltd., where he continues to innovate in semiconductor technology. His work has been instrumental in advancing the capabilities of integrated circuits, making them more reliable and efficient.

Collaborations

Throughout his career, Tsutsumida has collaborated with notable colleagues, including Yuichi Ito and Yasuhiro Fujimura. These partnerships have contributed to the development of groundbreaking technologies in the semiconductor field.

Conclusion

Koki Tsutsumida is a key figure in the semiconductor industry, with a focus on improving integrated circuit technology. His patents reflect his commitment to innovation and excellence in this vital area of technology.