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For the Inventor, By the Inventor

Tokyo, Japan

Yoshinobu Ishida

This inventor holds 50 USPTO granted patents, primarily in Optical Disk Technology (CPC class 369 ). Top assignees: Mitsubishi Denki Kabushiki Kaisha, Matsushita Electric Industrial Co., Ltd., Other. Active years: 1979-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshinobu Ishida. Retrieved from https://idiyas.com/inventor/yoshinobu-ishida

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

USPTO Granted Patents = 50

% Patents Active = 94.0

Average Co-Inventor Count = 4.4

ph-index = 13

Forward Citations = 612(Granted Patents)

Forward Citations (Not Self Cited) = 593(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Amagasaki, JP (1979)
  • Kyoto, JP (1992)
  • Tokyo, JP (1998 - 2002)
  • Nagaokakyo, JP (1987 - 2008)

Company Filing History:

goldMedal49 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
silverMedal3 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
bronzeMedal1 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1979-2008

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Areas of Expertise:
Optical Disk
Video Signal
Reproduction Apparatus
Tracking Method
Recording Medium
Laminated Optical Disc
Data Output
Semiconductor Memory
Multi-Channel Recording
Optical Disk Drive
Audio Signal
50 patents (USPTO):Explore Patents
1. 7343083 - Digital video signal record and playback device and method for selectively reproducing desired video information from an optical disk (2008-03-11),
2. 7340150 - Digital video signal record and playback device and method for selectively reproducing desired video information from an optical disk (2008-03-04),
3. 6549717 - Digital video signal record and playback device and method for giving priority to a center of an I frame (2003-04-15),
4. 6493314 - Disk device with opening lid (2002-12-10),
5. 6493306 - Optical disk, optical disk drive apparatus, and optical disk tracking method (2002-12-10),
6. 6466530 - Optical disk, optical disk drive apparatus, and optical disk tracking method (2002-10-15),
7. 6438079 - Optical disk, optical disk drive apparatus, and optical disk tracking method (2002-08-20),
8. 6396798 - Optical disc with a rewritable area and a read-only area (2002-05-28),
9. 6337845 - Optical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking method (2002-01-08),
10. 6337839 - Optical disk recording medium and optical disk drive apparatus (2002-01-08),
11. 6324158 - Disk cartridge (2001-11-27),
12. 6307821 - Optical disk drive recording/reproduction apparatus and method for producing modified address data (2001-10-23),
13. 6212159 - Laminated optical disc and turntable for the laminated optical disc (2001-04-03),
14. 6212145 - Optical disk drive recording/reproduction apparatus and method for producing modified address data (2001-04-03),
15. 6201775 - Optical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking method (2001-03-13),

Title: **Yoshinobu Ishida: A Pioneer in Digital Video Technology**

Introduction

Yoshinobu Ishida, based in Tokyo, Japan, is a prominent inventor known for his significant contributions to digital video technology. With a remarkable portfolio of 50 patents, Ishida has made a lasting impact on the field of video signal processing and playback methods.

Latest Patents

Among his latest innovations is a groundbreaking patent for a "Digital video signal record and playback device and method for selectively reproducing desired video information from an optical disk." This invention focuses on a device capable of recording a digital video signal that is coded using motion compensation prediction. The playback device utilizes an advanced data arrangement technique, where an 'I picture' is divided into multiple areas to optimize the reproduction of video content. Notably, the arrangement prioritizes the central area of the screen for data presentation. Even when parts of the I picture are unavailable for reading, the innovation employs interpolation techniques using preceding screen data to ensure a seamless playback experience.

Career Highlights

Yoshinobu Ishida's career includes significant tenure at leading companies such as Mitsubishi Electric Corporation and Matsushita Electric Industrial Co., Ltd. His work at these organizations has established him as a key player in the development of advanced video technologies and applications.

Collaborations

Throughout his career, Ishida has collaborated with talented individuals like Kazuhiko Nakane and Masato Nagasawa. These collaborations have furthered innovation in digital technologies and led to successful projects that have shaped the industry.

Conclusion

Yoshinobu Ishida's remarkable achievements and ongoing commitment to innovation in digital video technologies place him among the esteemed inventors of his field. His extensive patent portfolio underscores his dedication to advancing video signal recording and playback methods, solidifying his legacy in the world of 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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