Nobufumi Nakagaki

This inventor holds 6 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Video Engineering, Incorporated. Active years: 1987-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobufumi Nakagaki. Retrieved from https://idiyas.com/inventor/nobufumi-nakagaki

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

Calculating rank

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 4.8

ph-index = 4

Forward Citations = 87(Granted Patents)

Location History:

Yokohama, JP (1987)
Tokyo, JP (1991 - 2003)

Company Filing History:

Hitachi Video Engineering, Incorporated

patents

where one patent can have more than one assignee

Years Active: 1987-2003

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6621927 - Apparatus for detecting position of featuring region of picture, such as subtitle or imageless part (2003-09-16),

2. 6002797 - Apparatus for detecting position of featuring region of picture, such as (1999-12-14),

3. 5852474 - Television receiver including playback mode for storing screen image (1998-12-22),

4. 5181116 - Television receiver with control of writing and reading of video memory (1993-01-19),

5. 5025310 - Clock pulse generator capable of being switched to process both standard (1991-06-18),

6. 4677485 - Video signal processing circuits in television receivers (1987-06-30),

Title: **The Innovative Mind of Nobufumi Nakagaki**

Introduction

Nobufumi Nakagaki is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of technology. With a total of six patents to his name, he has displayed remarkable creativity and technical expertise throughout his career. His latest innovations focus on enhancing video signal processing, demonstrating his dedication to advancing modern technology.

Latest Patents

Nobufumi Nakagaki's recent patents include advanced apparatuses for detecting boundary positions in video signals. One of his notable inventions, titled "Apparatus for Detecting Position of Featuring Region of Picture, Such as Subtitle or Imageless Part," aims to precisely identify imageless sections of a picture. This detection is done through a boundary position detection apparatus that analyzes video signals to differentiate between image parts and imageless areas. Key components of this technology include a line decision circuit, a boundary decision circuit, a time integration circuit, and a detection control circuit, all working in harmony to determine final boundary positions and adjust based on average luminance.

Career Highlights

Nobufumi has an impressive background, having worked with leading technology companies such as Hitachi, Ltd. and Hitachi Video Engineering, Incorporated. His role in these organizations has enabled him to contribute significantly to advancements in video technology, particularly in boundary detection techniques.

Collaborations

Throughout his career, Nakagaki has collaborated with key industry professionals, including Toshinori Murata and Hiroshi Sekiya. These partnerships have fostered an environment of innovation and teamwork, ultimately leading to breakthroughs in their collective research and development efforts.

Conclusion

Nobufumi Nakagaki's inventive spirit and dedication to technology have led him to achieve remarkable milestones in his career. His continuing work in video signal processing is paving the way for future innovations. As technology advances, Nakagaki remains a notable figure whose contributions will undeniably influence the landscape of modern inventions.

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]