Patent ID: 8171512

Claim:
A host device, comprising: an application storing unit which stores a native application setting up a setting environment of the host device; a download unit which downloads an application provided from a broadcasting station; a control unit which executes the downloaded application to change the setting environment; and a display unit which displays menu items corresponding to the changed setting environment on a screen, wherein the control unit determines whether the menu items corresponding to the changed setting environment exist as existing menu items of the native application, and the control unit controls the display unit to display the existing menu items of the native application on the screen if the control unit determines that the menu items corresponding to the changed setting environment exist as the existing menu items of the native application, and the control unit controls the display unit to display a new menu item of the downloaded application and the existing menu items of the native application if the control unit determines that the menu items corresponding to the changed setting environment do not exist as the existing menu items of the native application, and wherein the display unit displays the new menu item of the downloaded application in a form different from the existing menu items of the native application on the screen to notify the changed setting environment.