Nozomu Nambu

Title: The Innovations of Nozomu Nambu

Introduction

Nozomu Nambu is a notable inventor based in Gunma, Japan. He has made significant contributions to the field of memory devices, holding a total of 3 patents. His work focuses on enhancing the efficiency and functionality of non-volatile memory technologies.

Latest Patents

One of Nambu's latest patents is a non-volatile multi-state memory device capable of variable storing. This innovative device switches the storing resolution of multi-state data according to the characteristics of the digital data stored in a non-volatile memory cell. Specifically, digital audio data are output from an ADPCM encoder in n-bit units, while m bits of address data are provided by an address controller. These inputs are processed through a switching circuit and a bit number converting circuit, which converts m bits of address data to n bits. The resulting data is then sent to a second multiplexer, where either the selected n bits of address data or the audio data is transmitted to a read-write circuit. This method allows for efficient writing with varying storing resolutions.

Another significant patent by Nambu involves a non-volatile multi-state memory device with a memory cell capable of holding inputted digital data. This data is stored in a data register and converted to a multi-state analog amount using a resistance dividing circuit and a decoder. A comparator then compares the analog amount read from a non-volatile memory cell with the converted analog amount. Based on this comparison, a writing voltage is supplied to the memory cell. This design includes a first bias generating circuit that produces two different types of bias voltages, allowing for simplified circuit configurations and reduced writing times.

Career Highlights

Nambu is currently employed at Sanyo Electric Co., Ltd., where he continues to innovate in the field of memory technology. His work has been instrumental in advancing the capabilities of non-volatile memory devices, making them more efficient and effective for various applications.

Collaborations

Throughout his career, Nambu has collaborated with notable colleagues such as Takashi Uchino and Akio Hagiwara. These partnerships have contributed to the development of cutting-edge technologies in the memory sector.

Conclusion

Nozomu Nambu's contributions to the field of memory devices highlight his innovative spirit and technical expertise. His patents reflect a commitment to improving the efficiency and functionality of non-volatile memory technologies