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For the Inventor, By the Inventor

Tokyo, Japan

Yasunobu Kuniyoshi

This inventor holds 10 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1976-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasunobu Kuniyoshi. Retrieved from https://idiyas.com/inventor/yasunobu-kuniyoshi

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

Calculating rank
USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 9

Forward Citations = 116(Granted Patents)


Location History:

  • Tokyo, JA (1976 - 1977)
  • Tokyo, JP (1979 - 1987)

Company Filing History:

goldMedal10 out of 58,150 
 
Sony Corporation
 patents

Years Active: 1976-1987

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10 patents (USPTO):Explore Patents
1. 4646161 - Automatic white balance control circuit (1987-02-24),
2. 4398193 - Control apparatus (1983-08-09),
3. 4288754 - Filter circuit (1981-09-08),
4. 4208674 - Time base error correcting apparatus (1980-06-17),
5. 4196445 - Time-base error correction (1980-04-01),
6. 4183050 - Clamping circuit for color television signals (1980-01-08),
7. 4157565 - Apparatus for eliminating time base errors from an information signal (1979-06-05),
8. 4012774 - Drop-out responsive color video reproducing apparatus (1977-03-15),
9. 4006423 - Phase detector (1977-02-01),
10. 3985954 - DC level control circuit (1976-10-12),

Title: Yasunobu Kuniyoshi: Innovator in Video Technology

Introduction

Yasunobu Kuniyoshi is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of video technology. With a total of 10 patents to his name, Kuniyoshi has focused on innovations that enhance the quality and control of video reproduction, making him a vital asset in the tech landscape.

Latest Patents

Among Yasunobu Kuniyoshi's latest inventions is the automatic white balance control circuit. This innovative circuit is designed to automatically adjust white balance based on changes in ambient illumination and the characteristics of the object being viewed. It utilizes a main photo-sensor to derive primary color signals and external light-sensing elements to ensure accurate white balance adjustments, achieving optimal color representation in video images.

Another significant patent is his control apparatus for regulating various characteristics of reproduced video pictures, such as hue, color, and brightness. This system includes a transmitter with a memory for storing relevant control data, a central processing unit for making adjustments, and a receiver that processes these changes into analog control voltages for accurate video reproduction.

Career Highlights

Yasunobu Kuniyoshi is affiliated with Sony Corporation, a leading player in the global electronics market. His work at Sony has positioned him at the forefront of technological advancements in video processing and control systems. His patents reflect a deep understanding of electronic imaging and signal processing, underscoring his expertise in the field.

Collaborations

Throughout his career, Kuniyoshi has collaborated with notable colleagues such as Takashi Okada and Takao Tsuchiya. These partnerships have fostered an environment of innovation and creativity, contributing to the development of advanced technologies in video systems.

Conclusion

Yasunobu Kuniyoshi's innovations in video technology have paved the way for enhancements in visual media quality. His patents showcase a commitment to improving user experience through precise control mechanisms. As a key figure in the realm of video technology, Kuniyoshi continues to inspire future innovations and advancements in the industry.

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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