Company Filing History:
Years Active: 1981-1997
Title: Sakou Ishikawa: Innovator in Memory Systems
Introduction
Sakou Ishikawa is a notable inventor based in Hadano, Japan. He has made significant contributions to the field of computer memory systems, holding a total of five patents. His innovative work focuses on enhancing the performance and efficiency of semiconductor memory technologies.
Latest Patents
One of his latest patents is a memory system using Schottky diodes to reduce load capacitance. This invention discloses a computer memory system with input/output circuitry that effectively separates the load capacitance of a semiconductor memory from the memory bus. By arranging a Schottky diode between the semiconductor memory and the memory bus line, and incorporating a voltage control circuit, the system maintains high-speed signal transmission even with multiple semiconductor memories connected. This advancement allows for the construction of high-speed and large-capacity memory systems.
Another significant patent is a system for calculating branch destination addresses based on address mode. In this data processing unit, when an instruction for new address mode setting is decoded, the branch destination address is calculated using a specific bit in the operand data of the instruction. This method enables efficient fetching of branch destination instructions, enhancing the overall performance of data processing.
Career Highlights
Sakou Ishikawa is currently employed at Hitachi, Ltd., where he continues to develop innovative technologies in the field of memory systems. His work has been instrumental in advancing the capabilities of semiconductor memory, contributing to the company's reputation as a leader in technology.
Collaborations
Throughout his career, Ishikawa has collaborated with talented individuals such as Tatsuya Sakai and Yutaka Watanabe. These collaborations have fostered a creative environment that has led to groundbreaking advancements in memory technology.
Conclusion
Sakou Ishikawa's contributions to the field of computer memory systems exemplify his innovative spirit and dedication to technology. His patents reflect a commitment to enhancing performance and efficiency in semiconductor memory, making a lasting impact in the industry.