发明名称 |
TOUCH SURFACE WITH TWO-DIMENSIONAL COMPENSATION |
摘要 |
An apparatus for determining an interaction between an object and a touch surface of a panel. An illumination arrangement introduces light into the panel for propagation by internal reflection between the touch surface and an opposite surface and towards a receiving light detection arrangement. A processor unit is configured to iteratively i) determine, based on the received light, a current light status representing a two-dimensional distribution of light in the panel, ii) determine the interaction with the object as a function of the current light status and a previously updated background status representing a two-dimensional distribution of light in the panel caused by contaminations, and iii) update the background status as a function of the interaction. A method and computer readable medium are also described. |
申请公布号 |
EP2491480(A4) |
申请公布日期 |
2014.07.30 |
申请号 |
EP20100825283 |
申请日期 |
2010.10.13 |
申请人 |
FLATFROG LABORATORIES AB |
发明人 |
CHRISTIANSSON, TOMAS;BRYBORN KRUS, MATTIAS;WASSVIK, OLA;FÅHRAEUS, CHRISTER;WALL, HENRIK |
分类号 |
G06F3/042;G06F3/041 |
主分类号 |
G06F3/042 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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