Company Filing History:
3 out of 99 
3 out of 372 
Years Active: 1989
Title: Innovations of Syuichi Fujisawa: A Pioneer in Time Division Multiplexing Technologies
Introduction
Syuichi Fujisawa is an esteemed inventor based in Tokyo, Japan, recognized for his significant contributions to the field of telecommunications. With a portfolio of three patents, Fujisawa has pioneered methods and systems that facilitate the multiplexing of input signals with varying sampling frequencies.
Latest Patents
Fujisawa's latest inventions include two notable patents. The first patent details a "Method and apparatus for multiplexing of input signals having differing sampling frequencies." This innovative system enables time division multiplexing of multiple information signals, allowing them to be transmitted through a single communication path. The process involves rearranging information signals into a time division multiplexed format using a reference sample signal based on the highest frequency among them and inserting dummy signals in non-information areas.
The second patent outlines a "Frequency synthesizer suited for use in a time division multiplexing." This frequency synthesizer features a divider that generates an address clock signal at a fraction of the input signal's frequency. It also incorporates a memory for storing samples of sine and cosine waves, which are used to produce a frequency deviation signal. The quadrant modulator then combines these signals to create an output signal that reflects the difference between the input signal and frequency deviation, thus allowing for variable frequency output while maintaining the signal phase.
Career Highlights
Fujisawa has had a distinguished career, having worked for notable companies such as Trio Kabushiki Kaisha and Nippon Hoso' Kyokai. His expertise has significantly influenced the development of advanced communication technologies.
Collaborations
Throughout his career, Fujisawa has collaborated with esteemed colleagues, including Hirokazu Kobayashi and Yukihiko Miyamoto. These partnerships have fostered innovation and advancement within the telecommunications sector.
Conclusion
In summary, Syuichi Fujisawa stands out as a leading inventor, greatly impacting the field of time division multiplexing technologies. His innovative patents demonstrate his dedication to enhancing telecommunication processes and reflect his status as a significant contributor to modern technical advancements.