Method and apparatus for processing digital service signal

An apparatus of processing a digital service signal, comprising:

• a receiver to receive signaling information for an application from the digital service signal, wherein the signaling information includes a service signaling table having channel information;
• a generator to generate a request using the channel information;
• a sending module to send the generated request, wherein the receiving module receives location information according to the sent request;
• a downloader to download the application using the received location information, wherein the application is associated with an API (Application Programming Interface) to set the mode information indicating a display status of the application, wherein the mode information includes a mode number indicating the display status of the application and a key set indicating keys which are needed in the display status of the application, wherein the key set is changed when the display status of the application is changed, wherein the display status of the application is a full display or an icon display,
• wherein the full display indicates that actual contents of the application are displayed on a screen and the icon display indicates that only an indicator of the application is displayed on a screen;
• an executer to execute the API to set the mode information;
• and
• a register to register the key set according to the mode number.

A method of processing a digital service signal, the method comprises:

• transmitting signaling information for an application with the digital service signal by a transmitter, wherein the signaling information includes a service signaling table having channel information;
• receiving a request related to the channel information by a receiver;
• and
• transmitting location information of the application related to the digital service signal according to the received request by the transmitter,
• wherein the application is associated with an API (Application Programming Interface) to set mode information indicating a display status of the application, wherein the mode information includes a mode number indicating the display status of the application and a key set indicating keys which are needed in the display status of the application, wherein the key set is changed when the display status of the application is changed, wherein the display status of the application is a full display or an icon display,
• wherein the full display indicates that actual contents of the application are displayed on a screen and the icon display indicates that only an indicator of the application is displayed on a screen.

An apparatus of processing a digital service signal, comprising:

• a transmitter to transmit signaling information for an application with the digital service signal and location information of the application related to the digital service signal, wherein the signaling information includes a service signaling table having channel information;
• and
• a receiver to receive a request related to the channel information, wherein the transmitter transmits location information of the application according to the received request,
• wherein the application is associated with an API (Application Programming Interface) to set the mode information indicating a display status of the application, wherein the mode information includes a mode number indicating the display status of the application and a key set indicating keys which are needed in the display status of the application, wherein the key set is changed when the display status of the application is changed, wherein the display status of the application is a full display or an icon display,
• wherein the full display indicates that actual contents of the application are displayed on a screen and the icon display indicates that only an indicator of the application is displayed on a screen.