Patent ID: 8203544
Filing Date: 2012-06-19
Classification: G06F,H04M

Abstract:
1. An input device, comprising: a first input unit configured to provide at least two directional signals; a second input unit located in the first input unit, the second input unit including a housing having a cylindrical shape, a trackball located in the housing and a rotation detection unit located in an inner side of the housing and configured to detect the rotation of the trackball, the second input unit being configured to provide at least two directional signals different from the at least two directional signals of the first input unit; a circuitry supporting substrate configured to receive a signal that is input through the first input unit and the second input unit; and a dome switch configured to perform a function corresponding to one of a confirmation key, a selection key, and a mode-switching key when the trackball is pressed downward toward the circuitry supporting substrate, the dome switch being disposed between the circuitry supporting substrate and a lowest position of the trackball and disposed within the housing, wherein the first input unit includes: wherein the second input unit is further configured to switch the first input unit between a first mode for performing an input operation when pressed by user and a second mode for performing an input operation when touched by user.