Light spot control system and method thereof

摘要

A light spot control system, using a projection light of a projection device to initiate a control of a mobile communication device, includes an I/O unit and a processing unit. The I/O unit is used to receive the projection light. The processing unit is used to provide a time value and a position value. The time value is a duration of the projection light stayed at the I/O unit, and the position value is a position of the projection light stayed at the I/O unit. When the time value meets a default value, the respective position value is used to perform the control.