Tsuneyo Chiba

Title: Tsuneyo Chiba: Innovator in Semiconductor Logic Circuits

Introduction

Tsuneyo Chiba is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on improving the efficiency and reliability of logic circuits in integrated devices.

Latest Patents

One of Tsuneyo Chiba's latest patents is a method and circuit for determining the power consumption requirements for a semiconductor logic circuit and designing the circuit accordingly. This innovative logic circuit assesses the power consumption of a semiconductor integrated device by considering the variation in the rate of operation. A control signal, referred to as TEST, is applied to each control signal input port of flip-flop circuits. When the control signal is low, both the flip-flop circuits and the logic gate circuit function normally. However, when the control signal is high, they undergo a power consumption test. This testing process helps reduce operational failures and ensures the quality of semiconductor chip production by accurately predicting power consumption during the design phase.

Another notable patent involves an integrated circuit device that features different signal transfer circuits. In this design, a voltage driver circuit is implemented with short wiring lengths, while the signal receiving circuit is achieved through a logic circuit that responds to the voltage at the terminal of the wiring. Additionally, a current sense circuit is included to monitor the current flowing through longer wiring, converting it into a voltage. This design optimizes the performance of the voltage driver circuit and the current sense circuit, enhancing the overall efficiency of the semiconductor device.

Career Highlights

Tsuneyo Chiba is currently employed at Hitachi, Ltd., where he continues to innovate in the semiconductor field. His work has been instrumental in advancing the technology used in integrated circuits, making them more efficient and reliable.

Collaborations

Throughout his career, Tsuneyo has collaborated with notable colleagues, including Hiroki Yamashita and Hiroyuki Itoh. These collaborations have contributed to the development of cutting-edge technologies in the semiconductor industry.

Conclusion

Tsuneyo Chiba's contributions to semiconductor logic circuits have significantly impacted the industry. His innovative patents and ongoing work at Hitachi, Ltd. highlight his dedication to advancing technology in this critical field.