This inventor holds 1 USPTO granted patent, plus 1 CIPO patent. Top assignee: Fujitsu Corporation. Active years: 1991.
Company Filing History:
Years Active: 1991
Title: Kouji Tokiwa: Innovator in Digital Adaptive Filters
Introduction
Kouji Tokiwa is a distinguished inventor based in Atsugi, Japan, known for his contributions to digital signal processing. His innovative work in developing advanced technology has garnered attention in the field of telecommunications and audio processing.
Latest Patents
Tokiwa holds a patent for a Digital Adaptive Filter and Method of Convergence Therein. This patent discloses a sophisticated digital adaptive filter designed to cancel echo components generated by the partial return of transmission signals to the receiving side. The invention includes a main memory unit that stores a first echo replica, which can be accessed using parallel signals from a main tap unit as an address. Additionally, it features submemory units to store second echo replicas, which offer greater precision, thus reducing accumulated errors due to memory division. The main memory's contents can be updated based on the error between the pseudo signal and the input signal, allowing for adaptive adjustments depending on the magnitude of the error.
Career Highlights
Kouji Tokiwa has dedicated his professional career to Fujitsu Corporation, leveraging his expertise in digital signal processing to create innovative solutions that improve communication technologies. His work has significantly impacted how transmission signals are handled in various applications, making him a notable figure in his field.
Collaborations
Throughout his career, Tokiwa has collaborated with esteemed colleagues, including Seiji Miyoshi and Misao Fukuda. These collaborative efforts have fostered an environment of innovation and creativity, enabling the development of breakthrough technologies in digital adaptive filtering.
Conclusion
Kouji Tokiwa's contributions to the field of digital signal processing underscore his role as a significant innovator in the technology sector. His patented methods not only highlight his inventive prowess but also enhance the efficiency and effectiveness of communication systems.