Patent ID: 9141246
Filing Date: 2015-09-22
Classification: G06F

Abstract:
1. A touch pad comprising: an operation surface; a detection unit configured to output a variable signal based on proximity of an object with respect to the operation surface; and a control unit configured to calculate a touch region and a touch position of the object on the basis of the variable signal, and to perform palm determination to determine whether the object is a finger or a palm based on spatial characteristics of the touch region, the spatial characteristics corresponding to an area or a length of the touch region, wherein the control unit determines: when the touch position is in a peripheral portion of the operation surface, that the object is a palm if the spatial characteristics exceed a first condition, and that the object is a finger if the spatial characteristics do not exceed the first condition; and when the touch position is in a central portion of the operation surface, that the object is a palm if the spatial characteristics exceed a second condition greater than the first condition, and that the object is a finger if the spatial characteristics do not exceed the second condition.