Patent ID: 8248391
Filing Date: 2012-08-21
Classification: G06F

Abstract:
1. A method of operating a mobile communication terminal having a screen, a first input key, a first proximity sensor key, and a second proximity sensor key, the method comprising: scrolling a displayed screen at a first speed when the first input key is turned scrolling the displayed screen at a second speed in a first direction when the first proximity sensor key is activated after the first input key is turned; scrolling the displayed screen at a third speed in a second direction different from the first direction when the second proximity sensor key is activated after the first input key is turned, the third speed being the same as or different from the second speed; stopping the scrolling of the displayed screen by gradually decreasing a scrolling speed of the displayed screen instead of instantly stopping the scrolling of the displayed screen when the first or second proximity sensor key is deactivated; and re-scrolling the displayed screen at the first speed when the first input key is turned again after the first or second proximity sensor key is deactivated, wherein the first input key is one of a wheel key and a rotary key, wherein the second and third speeds have respective initial values that are faster than the first speed, and wherein the second and third speeds are increased from their respective initial values in proportion to a time of activating the respective first or second proximity sensor key.