发明名称 |
OBJECT DETECTION IN TOUCH SYSTEMS |
摘要 |
A signal processor implements a technique for detecting objects on a panel which transmits signals inside the panel such that the objects are allowed to interact with (e.g. attenuate) the signals by contact with a touch surface of the panel. The signal processor operates to define cells that have a given location on the touch surface and are associated with a respective set of intersecting paths for the signals across the touch surface. The signal processor operates to obtain (90) an output signal from a signal detection arrangement that measures a signal property for each path; process (91) the output signal to obtain an interaction value for each path; and generate (93-95′) a cell value of a selected cell among the cells as either a robust measure of central tendency (e.g. a median) or a minimum/maximum among the interaction values for the intersecting paths. The signal processor determines (97) presence or absence of an object in the selected cell based on the cell value. |
申请公布号 |
EP2845081(A4) |
申请公布日期 |
2015.12.16 |
申请号 |
EP20130784581 |
申请日期 |
2013.04.29 |
申请人 |
FLATFROG LABORATORIES AB |
发明人 |
BJÖRKLUND, ANDREAS;CHRISTIANSSON, TOMAS;WALLANDER, MATS PETTER;OHLSSON, NICKLAS |
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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