H Nakanishi

Title: H Nakanishi: Innovator in Memory Circuit Technology

Introduction

H Nakanishi is a notable inventor based in Hyougo, Japan, recognized for his contributions to the field of memory circuit technology. With a total of 4 patents to his name, Nakanishi has made significant advancements that enhance the performance and reliability of memory systems.

Latest Patents

One of Nakanishi's latest patents is the NMOS input receiver circuit. This invention features a feedback mechanism to control hysteresis in a read-only memory. It includes a second stage and an additional output, which isolates switching circuit noise from within the read-only memory, ensuring that it does not interfere with the detection of TTL voltage levels. The design employs wide and long FET sizes to minimize manufacturing-related variations in the input receiver switching levels.

Another significant patent is the VLSI memory circuit. This innovation introduces a memory precharge voltage, VPC, which adapts to changes in the high voltage supply, VDD. It maintains the precharge voltage despite transient loads that may attempt to lower it. The precharge voltage is utilized as a controlling input signal for a circuit that generates an internal control voltage, MLC, which drives small pull-up current FETs connected to the bit lines in the ROM core. The internal control signal MLC is designed to track the discharge current in a bit line within the memory core, ensuring it remains at its operating voltage level even during power down conditions.

Career Highlights

Throughout his career, H Nakanishi has worked with several prominent companies, including Creative Integrated Systems, Inc. and Ricoh Company, Ltd. His work in these organizations has contributed to the development of innovative technologies in the field of electronics and memory systems.

Collaborations

Nakanishi has collaborated with notable professionals in the industry, including James A Komarek and Clarence W Padgett. These collaborations have further enriched his work and contributed to advancements in memory circuit technology.

Conclusion

H Nakanishi's contributions to memory circuit technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative designs continue to impact the performance and reliability of memory systems in various applications.