Patent ID: 9733775
Date: 2017-08-15
CPC Classifications: G06F

Claim:
1. An information processing device comprising: an operation surface on which a fingertip is operated by coming into contact therewith or being in proximity thereto; a sensor unit configured to detect a plurality of positions on the operation surface at which fingers of an operator are in contact therewith or in proximity thereto; a determination unit configured to determine, when three or more positions are detected by the sensor unit, if the three or more positions include a position of a non-fingertip based on positional relationships among the three or more positions; and an identification unit configured to identify an operation of one or more fingertips based on the three or more positions detected by the sensor unit and a determination result of the determination unit, wherein the determination unit calculates an evaluation value indicating a degree of an arrangement pattern of the three or more positions approximating to a straight line according to an angle formed by two straight lines each passing through respective one of two most distant positions and another position among the three or more positions, and determines that the three or more positions include the position of the non-fingertip when the calculated evaluation value deviates from a predetermined range of the evaluation value indicating that the arrangement pattern approximates to the straight line.