Patent ID: 7697069
Filing Date: 2010-04-13
Classification: H04N

Abstract:
1. A digital television having a digital picture-in-picture function, comprising: a multi-input and multi-output device having at least one or more splitters to split an over-the-air input signal and a cable input signal into over-the-air signals and cable signals and transmit the over-the-air signals and cable signals to plural output ports, an OOB input and output port to communicate bidirectionally and to be connected to at least one or more of the at least one or more splitters, and a diplexer for the cable signal input port, and a signal from the diplexer is applied to the OOB input and output port of the multi-input and multi-output device, a loop-through output port, and the plural splitters; an OpenCable tuner to demodulate and output a signal input from an OOB input and output port, connected to the first OOB input and output port of the multi-input and multi-output device, and from the In-Band input port, and, at the same time, to demodulate a signal input from and output to the OOB input and output port and output two-way data; and a sub tuner to demodulate analog and digital signals output from the splitter and output the demodulated analog and digital signals.