Systems, methods and techniques for inputting text into mobile devices using a camera-based keyboard

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United States of America Patent

PATENT NO 9898809
SERIAL NO

14936915

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Abstract

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Systems, methods and techniques are provided for interacting with mobile devices using a camera-based keyboard. The system comprises a processor system including at last one processor. The processor system is configured to at least capture a plurality of images in connection with the keyboard and at least one hand typing on the keyboard via the camera. Based on the plurality of captured images, the processor system is further configured to locate the keyboard, extract at least a portion of the keys on the keyboard, extract a hand, and detect a fingertip of the extracted hand. After that, a keystroke may be detected and localized through tracking the detected fingertip in at least one of the plurality of captured images, and a character corresponding to the localized keystroke may be determined.

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Patent Owner(s)

Patent OwnerAddress
COLLEGE OF WILLIAM AND MARY519 RICHMOND ROAD P O BOX 8795 WILLIAMSBURG VA 23187-8795
NANJING UNIVERSITY210093 NO 22 HANKOU ROAD GULOU DISTRICT JIANGSU NANJING NANJING CITY JIANGSU PROVINCE 210093

International Classification(s)

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  • 2015 Application Filing Year
  • H04N Class
  • 17427 Applications Filed
  • 14242 Patents Issued To-Date
  • 81.73 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Qun Williamsburg, US 206 3141
Lu, Sanglu Nanjing, CN 1 6
Xie, Lei Nanjing, CN 75 787
Yin, Yafeng Nanjing, CN 3 41

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Patent Citation Ranking

  • 2 Citation Count
  • H04N Class
  • 27.70 % this patent is cited more than
  • 7 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges2332524554514072381312563701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +025050075010001250150017502000225025002750300032503500375040004250450047505000525055005750

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