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发明授权
CN102460356B 用于确定物体表面上的触击或触摸的位置的方法 有权

用于确定物体表面上的触击或触摸的位置的方法
摘要：
本发明涉及用于确定包括两个或更多个换能器的物体的表面上的一个或多个触击或触摸的位置的方法，即使对于低信噪比，其也改善了定位精度，而且提供了确定多个触摸或多个触击的情况的可能性。为了实现这些目标，该方法包括下述步骤：a)从所述换能器中的每一个接收信号，特别是声音信号，其中所述信号对应于所述表面上的至少一个位置处的至少一个触击；b)基于在步骤a)中接收到的所述信号和预定特性，特别是声音特性，确定所述物体的在所述物体的所述表面上的给定位置处的代表值；以及c)基于所述代表值和所述至少两个信号的中的对应的值的比较，判断步骤a)中的所述表面上的所述至少一个位置处的至少一个触击是否对应于所述表面上的所述给定位置。
摘要（英）：

The invention relates to a method for determining the locations of one or more impacts or touches on a surface of an object including two or more transducers which improves the precision of localisation even for low signal to noise ratios and furthermore provides the possibility to identify multi touch or multi impact situations. To achieve these objects the method comprises the steps of: a) receiving a signal, in particular an acoustic signal, from each one of the transducers, wherein the signals correspond to at least one impact at at least one location on the surface; b) determining a representative value based on the signals received in step a) and predetermined properties, in particular acoustic properties, of the object at a given location on the surface of the object; and c) deciding whether the at least one impact at the at least one location on the surface of step a) corresponds to the given location on the surface based on a comparison of the representative value and the corresponding value of the at least two signals.

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