Patent ID: 7787817

Claim:
A method for heterogeneous services using a Picture-In-Picture (PIP) function in a terrestrial Digital Multimedia Broadcasting (DMB) receiver, the method comprising: a first step of receiving a key input for activating the PIP function and displaying a list of items comprising services in an available ensemble and an “exchange” function of the DMB, during use of a desired DMB service; a second step of selecting a desired item in the list of items; a third step of identifying if the desired item selected at the second step is the “exchange” function and identifying if the PIP function of the terrestrial DMB receiver is activated when the selected item is the “exchange” function; a fourth step of exchanging a service of a main screen for a service of an auxiliary screen in a PIP screen, when the PIP function is activated at the third step; a fifth step of identifying if the desired item selected at the second step is of the “exchange” function and displaying a service of the selected item on the PIP screen, when the selected item is not the “exchange”function; and a sixth step of displaying an “exchange” function error when it is identified that the PIP function is not activated at the third step.