Display apparatus and control method thereof

A method of controlling a display apparatus, the method comprising:

• receiving a broadcast signal which comprises a broadcast program and channel information, corresponding to a channel among a plurality of channels;
• extracting the broadcast program and the channel information from the broadcast signal by processing the received broadcast signal;
• displaying an image based on the extracted broadcast program;
• in response to channel information of a first channel among the plurality of channels and channel information of a second channel among the plurality of channels being included in a channel information field extracted from a broadcast signal corresponding to the first channel, determining the first channel and the second channel as overlapped channels;
• and
• performing a control operation for the overlapped channels including storing a channel list that selectively comprises all or some channels among the overlapped channels,
• wherein
• the channel information of the second channel included in the channel information field of the first channel is the same as channel information included in a channel information field of the second channel,
• if a channel determined as the overlapped channel is later determined to no longer be an overlapped channel, performing the control operation comprises displaying a user interface (UI) for informing a user that the corresponding channel is released from the overlapped channel so that the channel released from the overlapped channel is added to the channel list.