Company Filing History:
3 out of 39,238 
1 out of 12 Years Active: 1987-1992
Title: Sinji Nishikawa: Innovator in Computer Systems
Introduction
Sinji Nishikawa is a notable inventor based in Kawasaki, Japan. She has made significant contributions to the field of computer systems, holding a total of 3 patents. Her work focuses on improving the efficiency and reliability of interrupt processing in computer systems.
Latest Patents
One of her latest patents is titled "Method and apparatus for interrupt processing in a computer system." This invention provides an interrupt processing method and apparatus that includes an end indicative information storing unit. This unit stores end indicative information of a daisy chain for multiple peripheral units. The peripheral unit receives indicative information when it gets an acknowledge signal but does not output a request signal. It then outputs a specific chain end state signal to the central processing unit, allowing the CPU to return from a response waiting state. This innovation reduces delays caused by erroneous request signals generated by noise, thereby improving processing efficiency.
Another patent is for a "Register circuit with plural registers simultaneously reset." This register circuit comprises multiple registers that receive a common data signal and selection signals. Each register includes input and output terminals, a storing unit, and a control unit. The control unit transfers the data signal to the storing unit when the selection signal is effective and resets the storing unit when the data signal is already stored and the selection signal is not effective.
Career Highlights
Sinji Nishikawa has worked with prominent companies such as Fujitsu Corporation and Fujitsu Microcomputer Systems Limited. Her experience in these organizations has contributed to her expertise in computer systems and patent development.
Collaborations
Throughout her career, she has collaborated with notable individuals, including Hiroyuki Fujiyama and Kouichi Kuroiwa. These collaborations have further enriched her work and innovations in the field.
Conclusion
Sinji Nishikawa is a distinguished inventor whose contributions to computer systems have led to significant advancements in interrupt processing methods. Her patents reflect her commitment to enhancing the efficiency and reliability of technology.