Location History:
- Matudo, JP (1983 - 1984)
- Matsudo, JP (1984)
- Kawasaki, JP (1986)
- Tokyo, JP (1979 - 2000)
Company Filing History:
6 out of 42,517 
2 out of 82 
1 out of 4 Years Active: 1979-2000
Title: The Innovations of Sumio Nakagawa
Introduction
Sumio Nakagawa, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of electronics and telecommunications through his innovative inventions. With a total of nine patents to his name, Nakagawa's work continues to impact the industry.
Latest Patents
Among his latest patents, one notable invention is a circuit for measuring the transmission quality of demodulated digital signals. This circuit is designed to measure the carrier-to-noise ratio or the bit error rate of the demodulated I and Q digital signals obtained from an input carrier wave. It includes a discriminating circuit that produces a discrimination signal when the demodulated signal falls within predetermined windows. Additionally, a counting mechanism tracks these signals within a specific timeframe, allowing a calculating circuit to determine the carrier-to-noise ratio or bit error rate using previously stored relationships between count values and the respective ratios.
Another key invention is a three-dimensional image display system, which comprises a video information memory that stores video information in a perspective view. This system features a reading circuit that scrolls the stored information in an oblique direction. The display apparatus showcases the information in perspective, allowing for a visually dynamic presentation as graphics evolve over time.
Career Highlights
Throughout his career, Sumio Nakagawa has worked with renowned companies, including Hitachi, Ltd. and Ikegami Tsushinki Co., Ltd. His innovations have been instrumental in advancing technology and creating new applications in electronics.
Collaborations
During his tenure, Nakagawa has collaborated with notable individuals such as Toshio Tanaka and Kenzi Toudo. These partnerships have further enhanced his research and development efforts, contributing to the success of his inventive projects.
Conclusion
Sumio Nakagawa stands out as a remarkable inventor whose achievements have left a lasting mark on the fields of electronics and telecommunications. With nine patents that highlight his ingenuity, Nakagawa's contributions continue to inspire future innovations in the industry.