Signal processing apparatus, signal processing method, and broadcasting system including the signal processing apparatus

1. A signal processing apparatus, comprising:

a receiving unit configured to receive a signal transmitted through a media channel; and

a controller configured to determine whether the signal comprises a data download command and to change a channel of the receiving unit to receive data when the signal comprises the data download command,

wherein the data comprises program data including at least one of firmware and applications, and supplementary information data including at least one of advertisement, news, and weather,

wherein the controller generates a media image based on the signal and determines whether the media image comprises a command pattern corresponding to the data download command, and

wherein the controller determines whether the signal comprises the data download command by using both the media image and the command pattern.

2. The signal processing apparatus according to claim 1 , wherein the controller determines whether the signal comprises the data download command by comparing a media image histogram of the media image and a command pattern histogram of the command pattern.

3. The signal processing apparatus according to claim 1 , wherein the controller determines whether the signal comprises a command code corresponding to the data download command.

4. The signal processing apparatus according to claim 1 , wherein the controller changes the channel of the receiving unit to a preset data channel to receive the data.

5. The signal processing apparatus according to claim 1 , wherein the controller changes the channel of the receiving unit in accordance with channel information included in the data download command.

6. The signal processing apparatus according to claim 1 , wherein the controller changes the channel of the receiving unit to the media channel when data download is terminated.

7. The signal processing apparatus according to claim 1 , further comprising a storage unit configured to store data,

wherein the controller controls the receiving unit to store the received data in the storage unit.

8. The signal processing apparatus according to claim 1 , wherein the program data is to drive the signal processing apparatus and the supplementary information is to be provided to a user.

9. The signal processing apparatus according to claim 8 , wherein the controller controls a display apparatus to display a media image generated based on the signal and the supplementary information.

10. The signal processing apparatus according to claim 4 , wherein a data signal received through the data channel further comprises a substitute image to be displayed while the data is being received.

11. A method of processing a signal, the method comprising:

receiving a media by receiving a signal transmitted through a media channel;

determining whether the signal comprises a data download command; and

receiving data by changing a currently receiving channel to receive data when the signal comprises the data download command,

wherein the data comprises program data including at least one of firmware and applications, and supplementary information data including at least one of advertisement, news, and weather,

wherein the determining whether the signal comprises a data download command comprises:

generating a media image based on the signal; and

determining whether the media image comprises a command pattern corresponding to the data download command, and

wherein determining whether the media image comprises a command pattern corresponding to the data download command comprises determining whether the signal comprises the data download command by using both the media image and the command pattern.

12. The method according to claim 11 , wherein the determining whether the media image comprises the command pattern comprises:

generating a first histogram of the media image; and

comparing the first histogram with a second histogram of the command pattern.

13. The method according to claim 11 , wherein the receiving of data comprises changing the currently receiving channel based on information about a data channel included in the data download command.

14. The method according to claim 11 , further comprises changing the currently receiving channel to the media channel when the receiving of data is terminated.

15. A broadcasting system, comprising:

a transmitting apparatus configured to transmit a media signal through a media channel and transmit a data signal through a data channel;

a signal processing apparatus configured to change a currently receiving channel to the data channel when the media signal comprises a data download command; and

a display apparatus configured to display a screen in accordance with a control of the signal processing apparatus,

wherein data comprises program data including at least one of firmware and applications, and supplementary information data including at least one of advertisement, news, and weather,

wherein the signal processing apparatus generates a media image based on the signal and determines whether the media image comprises a command pattern corresponding to the data download command, and

wherein the signal processing apparatus determines whether the signal comprises the data download command by using the media image and the command pattern.

16. The broadcasting system according to claim 15 , wherein the display apparatus displays a media image generated based on the media signal and supplementary information included in the data signal.

17. The broadcasting system according to claim 15 , wherein the data signal comprises a substitute image to be displayed on the display apparatus while data is downloaded.

18. A method, comprising:

receiving a media signal through a media channel; determining whether the media signal comprises a data download command; and

switching reception to a data channel for downloading data when the media signal comprises the data download command; and

generating an image using the media signal as controlled by control data downloaded pursuant to the data command,

wherein the data comprises program data including at least one of firmware and applications, and supplementary information data including at least one of advertisement, news, and weather,

wherein the determining whether the media signal comprises a data download command comprises:

generating a media image based on the signal; and

determining whether the media image comprises a command pattern corresponding to the data download command, and

wherein the determining whether the media image comprises the command pattern comprises determining whether the signal comprises the data download command by using both the media image and the command pattern.