OPTICAL TOUCH APPARATUS AND TOUCH SENSING METHOD THEREOF

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United States of America Patent

APP PUB NO 20160188111A1
SERIAL NO

14806683

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Abstract

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The invention provides an optical touch apparatus including a light curtain generator, a light detection apparatus, and an operation unit, and a touch sensing method thereof. In a predetermined period where no touch object is on the detection surface, the operation unit controls the light curtain generator to generate a light curtain and obtains a first image by using the light detection apparatus, analyzes the first image to obtain an interference signal, and sets an area where the interference signal is located on the detection surface as an interference area. During a touch operation period, the operation unit obtains a second image, analyzes and determines whether a touch object of a touch signal in the second image is located in the interference area, and calculates a respective touch coordinate of the touch object corresponding to the touch signal based on the touch signal not located in the interference area.

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CORETRONIC CORPORATIONNO 11 LI-HSIN RD HSINCHU SCIENCE PARK HSIN-CHU 300

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  • 2015 Application Filing Year
  • G06F Class
  • 57200 Applications Filed
  • 45873 Patents Issued To-Date
  • 80.20 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Je-Fu Hsin-Chu, TW 9 13
Hung, Hao-Feng Hsin-Chu, TW 12 20

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges3122144564193188710466053822701961379632401 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +010002000300040005000600070008000900010000110001200013000140001500016000

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