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For the Inventor, By the Inventor

Toride, Japan

Hiroto Ohkawara

This inventor holds 24 USPTO granted patents, primarily in Video Camera Technology. Top assignee: Canon Kabushiki Kaisha. Active years: 1998-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroto Ohkawara. Retrieved from https://idiyas.com/inventor/hiroto-ohkawara

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

USPTO Granted Patents = 24

% Patents Active = 70.8

Average Co-Inventor Count = 1.7

ph-index = 13

Forward Citations = 416(Granted Patents)


Location History:

  • Toride, JP (2002 - 2006)
  • Ibaraki, JP (2005 - 2006)
  • Ibaraki-ken, JP (1998 - 2010)

Company Filing History:

goldMedal24 out of 92,901 
 
Canon Kabushiki Kaisha
 patents

Years Active: 1998-2010

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Areas of Expertise:
Video Camera
Automatic Focusing
Image Vibration Prevention
Lens Control Device
Interchangeable Lens
Image Pickup Apparatus
Electronic Zoom
Focus Adjusting Device
Image Shake Correction
Power Supply Control
Distance Measurement
Signal Control
24 patents (USPTO):Explore Patents
1. 7719605 - Video camera apparatus including automatic focusing (2010-05-18),
2. 7456898 - Video camera apparatus including automatic focusing (2008-11-25),
3. 7149421 - Image pickup apparatus and power supply control method therefor (2006-12-12),
4. 7098954 - Interchangeable lens video camera system (2006-08-29),
5. 7006139 - Image pickup apparatus with focusing lens control device (2006-02-28),
6. 6937285 - Image pickup apparatus and power supply control method therefor (2005-08-30),
7. 6930720 - Video camera system with interchangeable lens assembly (2005-08-16),
8. 6850280 - Automatic focus adjusting device with distance measuring area selection based on discrimination of a state of focus (2005-02-01),
9. 6778768 - Image vibration prevention apparatus (2004-08-17),
10. 6744468 - Lens control device for moving range correction (2004-06-01),
11. 6731339 - Lens control device with operator and signal control (2004-05-04),
12. 6683652 - Interchangeable lens video camera system having improved focusing (2004-01-27),
13. 6630950 - Apparatus for improving image vibration suppression (2003-10-07),
14. 6577343 - Image pickup apparatus with lens control apparatus and focusing lens control (2003-06-10),
15. 6445416 - Image pickup apparatus having electronic zoom function based on optical zooming focal length variation with time (2002-09-03),

Title: The Innovative Contributions of Hiroto Ohkawara in Video Camera Technology

Introduction: Hiroto Ohkawara is a prominent inventor based in Toride, Japan, known for his significant contributions to video camera technology. With a remarkable portfolio of 24 patents, he has played a crucial role in advancing innovations in automatic focusing mechanisms.

Latest Patents: Among his latest patents is a groundbreaking video camera apparatus that includes an automatic focusing system. This invention features a gate circuit designed to extract a sharpness signal from a specified area within a picture. Additionally, it integrates a focus adjusting device that utilizes this sharpness signal for accurate focus adjustments. Furthermore, the apparatus encompasses an area selecting circuit, which allows for the dynamic control of the gate circuit to vary the area size. This innovation ensures that the size of the area is determined during the driving of a variator lens based on the prior focal length, enhancing the camera’s efficiency and performance.

Career Highlights: Hiroto Ohkawara is currently employed at Canon Kabushiki Kaisha, a leading company in imaging and optical products. His work is instrumental in the development of cutting-edge video camera technology, aiming to improve user experience and image quality.

Collaborations: Ohkawara has collaborated with talented coworkers such as Masahide Hirasawa and Tatsuya Yamazaki. Together, they contribute to the ongoing innovation in video technology and the successful development of patented solutions that push the boundaries of imaging capabilities.

Conclusion: Hiroto Ohkawara's inventions and his dedication to advancing video camera technology have established him as a notable figure in the field. Through his numerous patents and collaborative efforts, he continues to influence the future of video technology, ensuring that the industry benefits from enhanced imaging solutions.

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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