Abstract: A user interface device and method of implementing the user interface device capable of controlling a display device are provided. The user interface device provides a single integrated user interface capable of displaying information regarding image data such as broadcast program information and has a function of controlling the display device for a user, thereby providing the user interface device and method of implementing the user interface device which can be intuitively and easily used by the user.

Abstract: A method of generating a directory structure used for a content search which can maximize a user's convenience is provided. The method includes: generating a plurality of attribute directories based on a plurality of content attributes; and generating a content directory containing a plurality of content having the contents attributes.

Abstract: A method and apparatus for increasing a processing speed using a quantum coprocessor are provided. The method includes receiving a command and data for performing a predetermined task, converting the command and the data into a signal having a format that the quantum coprocessor can receive if the command requests a quantum computation, sending the signal to the quantum coprocessor, receiving a processing result from the quantum coprocessor, and storing the processing result as a result of the command.

Abstract: An apparatus and method are provided for socket communication between applications in an operating system that does not support a process. The apparatus includes a server socket interface and a client socket interface. The server socket interface is created by the server application and has a first name. The client socket interface is created by the client application and has a second name that is related to the first name. The server socket interface includes a server message queue having the first name. The client socket interface includes a client message queue having the second name. The server message queue and the client message queue perform message queue-based communication between the server application and the client application.