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For the Inventor, By the Inventor

Tokyo, Japan

Johji Tajima

This inventor holds 11 USPTO granted patents and 2 EPO patents. Top assignee: Nec Corporation. Active years: 1989-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Johji Tajima. Retrieved from https://idiyas.com/inventor/johji-tajima

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

Calculating rank
USPTO Granted Patents = 11

% Patents Active = 90.9

 

Average Co-Inventor Count = 1.3

ph-index = 8

Forward Citations = 242(Granted Patents)


Location History:

  • Tokyo, JP (1989 - 2008)
  • Aichi, JP (2015)

Company Filing History:

goldMedal11 out of 36,735 
 
Nec Corporation
 patents

Years Active: 1989-2015

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11 patents (USPTO):Explore Patents
1. 9083913 - Image processing method, image processing device, and program (2015-07-14),
2. 7339596 - Projection plane color correction method of projector, projection plane color correction system of projector and program for projection plane color correction of projector (2008-03-04),
3. 7177450 - Face recognition method, recording medium thereof and face recognition device (2007-02-13),
4. 7055958 - Image projection method and device (2006-06-06),
5. 6928231 - Method and system for video recording and computer program storing medium thereof (2005-08-09),
6. 6678407 - Method and device of light source discrimination, skin color correction, and color image correction, and storage medium thereof capable of being read by computer (2004-01-13),
7. 6326974 - Method and apparatus for coloring support (2001-12-04),
8. 6035075 - Image deforming method and apparatus (2000-03-07),
9. 5943059 - Method and apparatus for coloring support (1999-08-24),
10. 5200792 - Device for obtaining distance information from an object by (1993-04-06),
11. 4864395 - Simplified calibration for a distance information obtaining device (1989-09-05),

Title: Innovations of Inventor Johji Tajima

Introduction

Johji Tajima is a prominent inventor based in Tokyo, Japan, known for his contributions to the field of image processing. With a total of 11 patents to his name, Tajima has developed innovative technologies that enhance the way images are processed and displayed.

Latest Patents

Tajima's latest patents include an image processing method, image processing device, and program. This method involves detecting edges from an image that is undergoing a sharpening process. The strength of the sharpening process applied to a pixel is determined based on the length of the edge near that pixel. Additionally, he has developed a projection plane color correction method, which includes a system and program designed for projectors. This innovative approach utilizes spectral reflectance and color information stored in a database to calculate a conversion matrix. By correcting the mixing amounts of primary colors, R, G, and B, it enables accurate color reproduction even on colored walls, ensuring high-quality projections.

Career Highlights

Tajima is currently associated with NEC Corporation, a leading technology company known for its advancements in information technology and communications. His work at NEC has allowed him to push the boundaries of imaging technology, resulting in patents that have practical applications in various industries.

Collaborations

Throughout his career, Tajima has collaborated with notable colleagues, including Youichi Satoh and Shizuo Sakamoto. Their joint efforts have contributed to the successful development of innovative technologies and have helped establish a robust intellectual property portfolio.

Conclusion

Johji Tajima's innovative spirit and technical expertise exemplify the impact of dedicated inventors in the field of image processing. With his 11 patents, he continues to influence how visual information is processed and displayed, making significant contributions to the advancement of technology in this domain.

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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