Signal processing device and image display apparatus including the same

A signal processing device comprising:

• a memory;
• a broadcast receiver including a tuner;
• and
• a controller,
• wherein the controller is configured to:
• receive, via the tuner, a broadcast signal consisting of a plurality of physical layer pipes (PLPs) corresponding to a plurality of channels;
• process a first PLP corresponding to a first channel preset as a broadcast channel;
• determine whether information on a broadcast program of the first channel is stored in the memory;
• based on the information on the broadcast program of the first channel not being stored in the memory, determine whether the information on the broadcast program of the first channel is provided through the first PLP;
• based on the information on the broadcast program of about the first channel is not being provided through the first PLP, determine, from among the plurality of PLPs, a PLP carrying the information on the broadcast program of the first channel;
• based on the information on the broadcast program of the first channel being provided through a second PLP corresponding to a second channel, process the second PLP to obtain the information on the broadcast program of the first channel;
• and
• output, via a display, a screen including an object indicating that the information on the broadcast program of the first channel is being obtained while obtaining the information on the broadcast program of the first channel.

An image display apparatus comprising:

• a broadcast receiver including a tuner;
• a display;
• a memory;
• and
• a controller,
• wherein the controller is configured to:
• receive, via the tuner, a broadcast signal consisting of a plurality of physical layer pipes (PLPs) corresponding to a plurality of channels;
• determine whether information on a broadcast program of a first channel preset as a broadcast channel is stored in the memory;
• based on the information on the broadcast program of the first channel not being stored in the memory, determine, from among the plurality of PLPs, a PLP carrying the information on the broadcast program of the first channel;
• based on the information on the broadcast program of the first channel being provided through a first PLP corresponding to the first channel, process the first PLP to obtain the information on the broadcast program of the first channel;
• based on the information on the broadcast program of the first channel being provided through a second PLP corresponding to a second channel, process the second PLP to obtain the information on the broadcast program of the first channel;
• output, via the display, a screen including an object indicating that the information on the broadcast program of the first channel is being obtained while obtaining the information on the broadcast program of the first channel;
• and
• process the first PLP after obtaining the information on the broadcast program of the first channel to output, via the display, an image of the first channel along with the information on the broadcast program of the first channel.