Patent ID: 9507461
Filing Date: 2016-11-29
CPC Classification: G06F

Claim Text:
1. An input apparatus of a portable terminal, the input apparatus comprising: a touch panel configured to generate an input signal according to a pen touch; a memory configured to store at least one lookup table in which data for compensating an error of a pen input according to a user's pen usage characteristic and at least one of a position and an orientation of the portable terminal is stored; a controller configured to: a display unit configured to display a compensated pen input signal, wherein the user's pen usage characteristic comprises a user's hand that grips the pen and an angle of the pen when used by the user, and wherein the lookup table comprises a lookup table set for a left handed user and a lookup table set for a right handed user, and each lookup table set comprises a plurality of lookup tables corresponding to an angle of the pen when used and at least one of position and orientation.