INPUT DEVICE, AND METHOD AND PROGRAM FOR CONTROLLING THE SAME

摘要

Threshold values smaller than degrees of proximity of an object indicated by detection data at peak positions are set based on detection data of the peak positions at which a degree of proximity of the object is higher than that of surrounding detection positions. An evaluation value according to an area of a region on a detection surface occupied by a group of detection positions, including the peak positions, in which degrees of proximity of the object indicated by detection data are higher than the threshold values, is calculated, and it is determined whether the object in proximity to the peak position is a finger or a palm based on the evaluation value.

主权项

1. An input device for inputting information according to a state of proximity of an object thereto, the input device comprising:
a detection surface to which the object approaches; a sensor unit configured to detect a degree of proximity of the object at a plurality of detection positions on the detection surface, and to generate detection data indicating a result of the detection for each of the plurality of detection positions; a peak position specifying unit configured to specify, as a peak position, the detection position at which the degree of proximity of the object is higher than that of surrounding detection positions based on the detection data generated for the plurality of detection positions; a threshold value setting unit configured to set, based on the detection data at the peak position, a threshold value smaller than a value corresponding to the degree of the proximity of the object indicated by the detection data at the peak position; an evaluation value calculation unit configured to calculate an evaluation value according to an area of a region on the detection surface occupied by a group of detection positions at which the degree of proximity of the object indicated by the detection data is higher than the threshold value, the group of detection positions including the peak position; and a determination unit configured to determine whether the object in proximity to the peak position is a finger or a palm based on the evaluation value.