Patent ID: 8489150

Claim:
A mobile terminal, comprising: a mobile communication unit configured to transmit and receive a radio signal over a communication network; a display unit configured to display visual information processed in the mobile terminal; an input unit configured to receive a user input; at least one sensor configured to detect user's gaze information; a controller configured to execute screen lock when recognizing a lack of the user input for a delay time, and to change the delay time based on the user's gaze information, wherein the gaze information indicates a line connecting a user's eyes to the display unit and the controller is configured to determine whether the user stares at the display unit based on the user's gaze information, and wherein the controller is further configured to extend a first delay time T1 to a second delay time T2 when the controller determines that the user stares at the display unit based on the user's gaze information, or to reduce the first delay time T1 to a third delay time T3 when the controller determines that the user does not stare at the display unit based on the user's gaze information.