Location History:
- Tokyo, JP (2011 - 2015)
- Kanagawa, JP (2015)
Company Filing History:
4 out of 7,529 
1 out of 4,714 
Years Active: 2011-2015
Title: Norihisa Yamamoto: Innovator in Semiconductor Technology
Introduction: Norihisa Yamamoto is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on enhancing communication devices and improving the efficiency of electronic systems.
Latest Patents: Yamamoto's latest patents include innovations such as a semiconductor device, a portable communication terminal, an IC card, and a microcomputer. His semiconductor device features a noncontact interface technique that allows for communication operations to continue without interruption, even when a clock signal cannot be extracted from a carrier wave. This invention utilizes a PLL circuit with voltage control oscillation to maintain internal clock signals during interruptions. Additionally, his portable terminal is designed to supply power to a chip card while the host is powered off, ensuring functionality in low battery modes.
Career Highlights: Throughout his career, Norihisa Yamamoto has worked with leading companies in the technology sector, including Renesas Electronics Corporation and NTT Docomo, Inc. His expertise in semiconductor technology has positioned him as a key player in the development of advanced communication systems.
Collaborations: Yamamoto has collaborated with notable colleagues such as Shin Morita and Sumi Kawabata, contributing to various innovative projects in the semiconductor field.
Conclusion: Norihisa Yamamoto's contributions to semiconductor technology and communication devices have established him as a significant inventor in his field. His innovative patents continue to influence the development of modern electronic systems.