Abstract: This invention relates to a communication system, a data processing apparatus, a data processing method, a data providing apparatus, a data providing method, and a program for offering services to users in response to their requests. Executable buttons representing executable functions are displayed in a given display format, while optional buttons representing optional functions are displayed in a different format. When a download button is operated to request download of software for implementing the function represented by any one of the executable buttons, the software in question is downloaded. Executing the downloaded software changes the optional button representing the implemented function into an executable button on display.

Abstract: A purchase type determining unit 244 determines whether content is rental content, which has a valid time limit for enjoying, from purchasing type information included in the license information. An icon image processing unit 352 disposes an icon image of the content in a menu screen. In case the content is determined to be rental content by the purchase type determining unit 244, a rental mark disposing unit 356 disposes a rental mark indicating that associated content is rental content near the icon image of the content or disposes the rental mark so as to overlap with the icon image of the content.

Abstract: This invention relates to a communication system, a data processing apparatus, a data processing method, a data providing apparatus, a data providing method, and a program for offering services to users in response to their requests. Executable buttons representing executable functions are displayed in a given display format, while optional buttons representing optional functions are displayed in a different format. When a download button is operated to request download of software for implementing the function represented by any one of the executable buttons, the software in question is downloaded. Executing the downloaded software changes the optional button representing the implemented function into an executable button on display.