Kiyotsugu Ueda

Title: Kiyotsugu Ueda: Innovator in Semiconductor Technology

Introduction

Kiyotsugu Ueda is a prominent inventor based in Hachioji, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of six patents. His work focuses on enhancing the performance and efficiency of semiconductor memory devices.

Latest Patents

One of Ueda's latest patents involves a semiconductor memory device designed to supply data at high speed to a microprocessor (MPU). This device is engineered to operate without being affected by variations in power supply voltage, temperature, and production process conditions. The semiconductor chip comprises several components, including an address buffer, a decoder, a word driver, data lines, a sense amplifier, a main amplifier, an output buffer, and a phase-locked loop (PLL) that receives an external clock. The PLL generates control signals with shifted phases, which are supplied to the internal circuits. This innovative design allows for constant control signal phases, ensuring that the internal circuits can be precharged or equalized effectively. Consequently, the operating cycle time is shortened compared to the access time, maintaining a constant access time.

Career Highlights

Throughout his career, Kiyotsugu Ueda has worked with notable companies, including Hitachi, Ltd. and Hitachi ULSI Engineering Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Ueda has collaborated with several talented individuals in his field, including Koichiro Ishibashi and Kunihiro Komiyaji. These collaborations have likely fostered a creative environment that has led to advancements in semiconductor technology.

Conclusion

Kiyotsugu Ueda's contributions to semiconductor technology through his innovative patents and collaborations highlight his importance in the field. His work continues to influence the development of high-speed data supply systems for microprocessors.