Yokohama, Japan

Yujio Fukuju

This inventor holds 1 USPTO granted patent. Top assignee: Sony Corporation. Active years: 1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yujio Fukuju. Retrieved from https://idiyas.com/inventor/yujio-fukuju

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 1989

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1 patent (USPTO):Explore Patents

Title: Yujio Fukuju: Innovator in Signal Reproduction Technology

Introduction

Yujio Fukuju is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of signal reproduction technology. His innovative work has led to the development of a unique method and apparatus for reproducing digital and analog signals.

Latest Patents

Fukuju holds a patent for a method and apparatus for reproducing digital or analog signals. This invention involves a tape player that includes both digital and analog reproducing sections. The device is designed to play back a magnetic tape that has encoded digital data arranged in data blocks, alongside an analog signal running parallel to the digital data. The digital reproducing section features a switching circuit that includes an error-detecting circuit. This circuit indicates the presence of errors or data drop-outs. Additionally, a width detector provides an initial error signal when a predetermined consecutive number of data blocks contain errors or are not being reproduced. A decoder is also included, which provides decoded digital information and a remaining error signal when an uncorrected error is encountered. The remaining error signal is generated with a predetermined delay after the digital data is read from the tape. If the initial error signal is present when the remaining error signal is generated, an AND circuit and a flip-flop in the switching circuit generate a switching signal to substitute the analog signal for the digital signal.

Career Highlights

Fukuju has had a distinguished career, primarily working with Sony Corporation. His work has been instrumental in advancing the technology used in tape players and signal reproduction systems. His innovative approach has garnered recognition within the industry.

Collaborations

Fukuju has collaborated with his coworker, Makoto Niiro, to further enhance the development of signal reproduction technologies. Their combined efforts have contributed to the success of their projects at Sony Corporation.

Conclusion

Yujio Fukuju's contributions to signal reproduction technology exemplify the impact of innovation in the field. His patent for a method and apparatus for reproducing digital and analog signals showcases his expertise and dedication to advancing technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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