Chiba, Japan

Hiromasa Naganuma

This inventor holds 21 USPTO granted patents and 5 published patent applications and 3 EPO patents, primarily in Image Processing Technology. Top assignees: Sony Corporation, Sony Interactive Entertainment Inc.. Active years: 2012-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromasa Naganuma. Retrieved from https://idiyas.com/inventor/hiromasa-naganuma

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

USPTO Granted Patents = 21 

% Patents Active = 76.2

 

Average Co-Inventor Count = 1.6

ph-index = 4

Forward Citations = 25(Granted Patents)


Location History:

  • Ichikawa, JP (2017)
  • Chiba, JP (2012 - 2023)
  • Tokyo, JP (2022 - 2024)

Company Filing History:


Years Active: 2012-2025

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Areas of Expertise:
Image Processing
Sensor Calibration
Vision Sensor
Electronic Device
Transfer Control
Subject Detection
Visual Line Detection
Text Recognition
Video Signal Processing
Movement Estimation
21 patents (USPTO):Explore Patents

Title: Hiromasa Naganuma: A Pioneer in Visual Line Detection Technology

Introduction

Hiromasa Naganuma, based in Chiba, Japan, is an innovative inventor with an impressive portfolio of 19 patents. His groundbreaking work primarily revolves around information processing devices and visual line detection systems, contributing significantly to the fields of sensor technology and user interaction.

Latest Patents

Among his latest patents, Naganuma has developed an information processing device that enhances user interaction by using controlled light sources to detect visual lines. This device includes a light source control section that adjusts the intensity of light directed at the user’s eyes. It also features a reception section linked to an event-driven vision sensor, which generates event signals indicating changes in light intensity reflected by the user's eyes. The visual line detection section identifies the light source based on the relationship between the eyes, the light source, and the vision sensor, ultimately enabling the detection of the user's visual line.

Additionally, he has created a sensor calibration system designed to enhance the performance of vision sensors. This system includes an event-driven vision sensor array that emits event signals upon detecting any changes in incident light intensity. A display apparatus is integrated into the system, capable of instantaneously adjusting the luminance of a planar region based on a specific calibration pattern, ensuring high accuracy in sensor operations.

Career Highlights

Naganuma has worked with notable companies, including Sony Corporation and Sony Interactive Entertainment Inc., where he has played a crucial role in developing cutting-edge technologies. His career has been marked by a commitment to advancing the capabilities of visual recognition systems and improving user experience through innovative inventions.

Collaborations

Throughout his career, Naganuma has collaborated with talented individuals, including Golnaz Abdollahian and Alexander Berestov. These partnerships have fostered a collaborative environment that has propelled the development of new technologies and innovations in the field of visual line detection.

Conclusion

Hiromasa Naganuma stands out as a significant figure in the world of inventions and patent development. His contributions to visual line detection technology and information processing devices are paving the way for advancements in user interaction and sensor technology. With a solid portfolio of patents, Naganuma continues to impact the industry positively, showcasing the power of innovation.

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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