for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region

Full Title

Selective content distribution, e.g. interactive television or video on demand [VOD] (real-time bi-directional transmission of motion video data H04N7/14 ) > Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof > End-user applications > End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content > for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region