Patent ID: 7348936

Claim:
A display device comprising: an A/D (Analog/Digital) converter receiving and converting an analog personal computer (PC) signal into a digital signal; a decoder receiving and decoding external input signals from an external signal inputter and outputting the external input signals as a digital signal; a video processor which performs a PIP (Picture In Picture) signal process displaying one of the converted PC signal and the decoded external input signal as a main screen and the other one as a sub main screen, thereby enabling the converted PC signal and the decoded external input signal to be displayable on a display; a memory storing different display property values setup depending on the external signal inputter; a controller controlling the PIP signal process of the video processor based on an external signal, reading the display property values from the memory, and controlling the decoded external input signal depending on the read display property values; and a user interface setting up a type of the external signal inputter.