An apparatus and a method providing an automatic display control in a multimedia system. The apparatus includes a memory that stores predetermined display information; a controller that includes a communication module to perform data communication with an external device, set to be in a master mode to write the display information to the memory in an initialize mode and set to be in a slave mode to analyze display control data for a predetermined automatic display control function which is transmitted by the external device, in other modes, and generates a display control signal used to perform a function that corresponds to the result of analyzing the display control data; and a video signal processor that receives video signals from the external device, converts the format of the video signals to another format suitable for the display characteristics of a display means, and processes the converted video signals according to the control signal.