Display device and method for operating same

A display device comprising:

• a display configured to display content;
• a receiver configured to receive control signals from a remote control, the remote control including a push-to-talk microphone configured to receive a user voice command;
• and
• a controller operatively connected to the receiver,
• wherein the controller is configured to search for real-time information based on the user voice command, the user voice command including identifying information related to at least one of a person, a location, and an item;
• wherein the controller is further configured to:
• in response to receiving the user voice command while displaying a scene, capture a content screen image and determine a frame time corresponding to a time point when the user voice command is received,
• transmit a request including a content identifier and the frame time to a metadata server that stores content-related information categorized per frame time,
• receive, from the metadata server, category information corresponding to the frame time including at least one of person information, location information, and item information,
• identify a requested category from the user voice command and arrange the received category information so that information of the requested category is displayed with a first priority and information of other categories with a second priority,
• display the arranged category information together with the captured content screen image while continuing to display the scene, and
• in response to the requested category being absent for the frame time, obtain category information for a previous scene and display the category information corresponding to the requested category from the previous scene.