Location History:
- Yokosuka Kanagawa, JP (2018)
- Meguro Tokyo, JP (2017 - 2019)
- Tokyo, JP (2017 - 2024)
Company Filing History:
8 out of 2,955 
3 out of 52,730 
1 out of 6,179 
Years Active: 2017-2024
Title: Hirosuke Narai: Innovator in Semiconductor Technology
Introduction
Hirosuke Narai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 12 patents. His work has been instrumental in advancing the capabilities of semiconductor devices and memory systems.
Latest Patents
Among his latest patents is a semiconductor device and test method that includes first and second chips in a package. This innovative device features a first pad on the first chip, which is electrically connected to a node between a power supply pad and a ground pad. Additionally, second and third pads are located on the second chip, with internal wiring connecting the first pad to the second pad. The power circuit on the semiconductor chip is designed to supply current to the second pad, while a switch on the second chip allows for the connection or disconnection of the second pad from the power circuit. A control circuit on the second chip outputs a first signal for the switch in response to a test signal supplied to the third pad, as well as a second signal to the power circuit to cause it to output current.
Another notable patent involves a memory device that changes a writable region of a data buffer based on the operational state of an error-correcting code (ECC) circuit. This memory device includes a semiconductor memory unit and a controller circuit that communicates with a host through a serial interface. The controller circuit stores write data in a data buffer and generates an error correction code if the ECC circuit is enabled. The maximum column address of the page accessible from the host changes depending on the status of the ECC circuit.
Career Highlights
Hirosuke Narai has worked with notable companies in the technology sector, including Toshiba Memory Corporation and Kabushiki Kaisha Toshiba. His experience in these organizations has allowed him to develop and refine his expertise in semiconductor technology.
Collaborations
Throughout his career, Narai has collaborated with talented individuals such as Shunsuke Kodera and Toshihiko Kitazume. These collaborations have contributed to the successful development of innovative technologies in the semiconductor field.
Conclusion
Hirosuke Narai is a distinguished inventor whose work in semiconductor technology has led to significant advancements in the industry. His patents reflect his commitment to innovation and excellence in engineering.