Company Filing History:
Years Active: 1998-2005
Title: Youichi Endo: Innovator in Semiconductor Technology
Introduction
Youichi Endo is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on enhancing data security and efficiency in memory devices.
Latest Patents
One of his latest patents is for a semiconductor memory device that reliably protects data written into a non-volatile memory. This device exhibits high EEPROM data security functionality. It features a user memory area for freely chosen data and a write-information storage memory area that indicates whether data has been written. A control logic circuit analyzes write commands and can output a write-prohibition signal if data is already present in the user memory area. Additionally, it may include a password authentication circuit for verifying user-inputted passwords.
Another notable patent is for a semiconductor integrated circuit device that includes an EEPROM capable of arbitrarily setting a write time. This device incorporates a timer circuit connected to a trimming circuit, allowing for the determination of write time. A trimming redundant memory array stores trimming data to be supplied to the trimming circuit based on a predetermined write time. This innovation enables calibration operations to be performed without special instructions or additional time, ensuring stable operation in less time.
Career Highlights
Youichi Endo is currently employed at Seiko Instruments Inc., where he continues to develop cutting-edge semiconductor technologies. His work has significantly impacted the efficiency and security of memory devices in various applications.
Collaborations
He has collaborated with notable coworkers, including Kazuaki Kubo and Masanori Miyagi, contributing to advancements in semiconductor technology.
Conclusion
Youichi Endo's innovative work in semiconductor technology, particularly in memory devices, showcases his commitment to enhancing data security and operational efficiency. His contributions are vital to the ongoing evolution of this field.