发明名称 |
TOUCH SURFACE WITH A COMPENSATED SIGNAL PROFILE |
摘要 |
<p>An apparatus, method and computer-readable medium for determining a location of at least one object on a touch surface of a light transmissive panel. The method comprises the steps of : introducing light into the panel for propagation by internal reflection between the touch surface and an opposite surface; receiving the light propagating in the panel; and iteratively i) determining (401 ) a current signal profile (Si) of light received by the light detection arrangement, ii) updating (403), when a condition is met, a background signal profile (Srefj) of light received by the light detection arrangement, iii) calculating (405) a current compensated signal profile (Ti) as a function of the background signal profile (Srefj) and the current signal profile (Si), and iv) determining (406), when the object touches the touch surface and thereby attenuates the light propagating in the panel, the location as a function of the compensated signal profile (Ti).</p> |
申请公布号 |
WO2011028169(A1) |
申请公布日期 |
2011.03.10 |
申请号 |
WO2010SE50932 |
申请日期 |
2010.09.01 |
申请人 |
FLATFROG LABORATORIES AB;FAAHRAEUS, CHRISTER;CHRISTIANSSON, TOMAS;WALL, HENRIK;WASSVIK, OLA |
发明人 |
FAAHRAEUS, CHRISTER;CHRISTIANSSON, TOMAS;WALL, HENRIK;WASSVIK, OLA |
分类号 |
G06F3/042 |
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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