Smart television and method for displaying graphical user interface of television screen shot

A display apparatus, comprising:

• a display configured to display content from a broadcast system or network and/or a user interface;
• a memory storing computer instructions and data associated with the display;
• and
• one or more processors in communication with the memory and the display, wherein the one or more processors are configured to execute the computer instructions to cause the display apparatus to perform:
• displaying an instructive icon over a playing-video on the display, the instructive icon being used for instructing a user to acquire information corresponding to a video content currently displayed;
• in response to an input instruction from the user, displaying a first user interface that includes:
• while a first display layer displays the video content, a second display layer for displaying a thumbnail image containing at least one target object in the video content and one or more keywords associated with the at least one target object, and
• a function selection region containing one or more items that are available for selection and associated with the at least one target object in the thumbnail image;
• and
• in response to a selection of an item in the function selection region, while the video content remains displaying on the first display layer, updating the first user interface to a second user interface which comprises information related to the at least one target object.