Patent ID: 8898700
Filing Date: 2014-11-25
Classification: H04H,H04N

Abstract:
1. A system for displaying digital broadcast signals comprising: a portable terminal; and an external device wirelessly communicating with the portable terminal, wherein the portable terminal comprises: a digital broadcast receiver that includes a tuner for tuning to a frequency of a selected broadcast channel and receiving a broadcast signal, a demodulator for demodulating the broadcast signal output from the tuner, and a first decoding unit for classifying the demodulated broadcast signals as audio, video, and broadcast information and for decoding the classified broadcast signals, respectively; a first display unit and a first speaker for playing back the decoded broadcast signals output from the first decoding unit; a terminal controller for selecting an output route of the demodulated broadcast signals in a digital broadcast playback mode of the external device, for interrupting a route of the broadcast signals applied to the decoding unit, and for controlling processes of an incoming communication event or an outgoing communication event, generated in the digital broadcast playback mode, while maintaining the digital broadcast playback mode; a first short-range communication unit for wirelessly transmitting the demodulated broadcast signals to the external device so that the external device enters the digital broadcast playback mode under the control of the terminal controller, and for performing data communication between the terminal controller and the external device; and a wireless communication unit for wirelessly communicating a communication signal, generated as the terminal controller processes the incoming or outgoing communication events, wherein the external device comprises: a second short-range communication unit for receiving the demodulated broadcast signals wirelessly transmitted from the portable terminal; a second decoding unit for decoding the demodulated broadcast signals; a second display unit and a second speaker for playing back the decoded broadcast signals output from the second decoding unit; and a second controller for wirelessly transmitting to the portable terminal a digital broadcast playback request and selected channel information through the second short-range communication unit and controlling playback of the received digital broadcast signals, wherein the portable terminal wirelessly provides the incoming or outgoing communication event when the communication event is generated, while simultaneously wirelessly providing the broadcast signal for playback through the external device, and wherein a protocol structure of a data stream for playing back the digital broadcast signals output from the first decoding unit includes a main command field and a sub command field that provide notification of digital broadcasting and a state of the portable terminal.