Abstract: The program recommendation device includes a search term receiver that receives at least one search term designated by a user, a partial match searcher that searches an electronic program list for programs having program information with words and phrases partially matching the search term designated by the user and outputs a partial match search result set, a language analyzer that performs a language analyzing process on the program information of each of the programs contained in the partial match search result set and outputs an analyzed search result set, an exact match searcher that searches the analyzed program information contained in the analyzed search result set for programs with words and phrases exactly matching the search term designated by the user and outputs an exact match search result set. A recommended program display displays programs contained in the exact match search result set as recommended programs.

Abstract: The program recommendation device includes a search term receiver that receives at least one search term designated by a user, a partial match searcher that searches an electronic program list for programs having program information with words and phrases partially matching the search term designated by the user and outputs a partial match search result set, a language analyzer that performs a language analyzing process on the program information of each of the programs contained in the partial match search result set and outputs an analyzed search result set, an exact match searcher that searches the analyzed program information contained in the analyzed search result set for programs with words and phrases exactly matching the search term designated by the user and outputs an exact match search result set. A recommended program display displays programs contained in the exact match search result set as recommended programs.

Abstract: A method of searching a keyword includes extracting a keyword from subtitle data included in a broadcast signal, displaying an extracted keyword with an image according to the broadcast signal, searching for a keyword using an search engine through a communication network when an instruction to search a displayed keyword is received, and displaying a search result by the search engine.

Abstract: There are provided a display device, an external connection device and a screen control method which enable hiding GUIs of the external connection device and displaying GUIs of the display device by operating a remote controller dedicated to the display device. When an operation code for restoring the GUI display is inputted from a remote controller 121 dedicated to a display device 100 to a user operation input unit 103 while a display unit 107 of the display device 100 displays a GUI of an external connection device 200 after displaying a GUI of the display device 100, a control unit 101 controls a data processing unit 106 to create a GUI in order to display a GUI of the display device 100 on the display unit 107.

Abstract: An electronic device (e.g., a display device) (101) is connected with an external connection device (e.g., an image recording/playback device) (201), thereby to perform data communications. A controller (103) of the electronic device (101) decides, in case it receives operation information, whether or not an operation screen (GUI) for the electronic device (101) is displayed. When the operation screen is displayed, the controller (103) further decides whether or not a key (a reception key) corresponding to the received operation information is effective for the operation screen. The controller (103) performs, when the reception key is effective for the operation screen, a control responding to the reception key, and, when the reception key is not effective for the operation screen, sends the received operation information to the external connection device (201).