Abstract: A key assembly including a base; a central button portion disposed on the base to move between a remote position and an adjacent position with respect to the base, and including a protrusion that protrudes outward along an edge of the central button portion; and a rotary button portion combined with the base, including a hole for externally exposing at least a portion of a side of the central button portion, rotatably disposed on outer side of the central button portion, and including a suppressing portion that is formed on an inner side of the hole to correspond to the protrusion to suppress movement of the central button portion in a direction away from the base. A rotary input device including the key assembly, and an electronic device including the rotary input device.

Abstract: A channel control method and apparatus of a broadcast reception system are provided for facilitating channel selection by providing multiple broadcast channel images on a screen. A method of managing channels for a channel control device includes receiving video images of plural channels from a content delivery device, displaying the video images of plural channels on a screen simultaneously, receiving an input for selecting at least one of the plural channels; and transmitting a channel selection request indicating the selected channel to the content delivery device. The channel control method and apparatus are capable of facilitating a user to search for broadcast channels, resulting in improvement of the user's convenience.

Abstract: A mobile terminal and a method for controlling a function of the mobile terminal using contents are disclosed. The contents are authored to include function control information related to the function of the mobile terminal desired to be controlled. The mobile terminal downloads the contents and registers the function desired to be controlled included in the contents to a service table. The application of the mobile terminal does not execute the called function as it is if the predetermined function is called, but identifies if the called function is registered in the service table. If the called function is registered, the application cancels the existing execution routine for the called function and requests the contents player of the service related to the called function. Then, the contents player controls the called function according to a method programmed in the contents.

Abstract: Provided is a method for displaying a wallpaper that includes setting a broadcast picture display function to display a specific broadcast picture as a wallpaper in response to a user's request; changing a standby mode to a digital broadcasting reception mode at preset time intervals to periodically capture a picture from a digital broadcast delivered on a specific channel if the broadcast picture display function is set; and displaying the captured picture as a wallpaper for the digital broadcasting reception terminal. The digital broadcasting reception terminal can periodically capture a picture from a digital broadcast program currently delivered and display the captured picture as a wallpaper even when the user does not view the digital broadcast program.

Abstract: An apparatus and a method for controlling a lock function in a portable terminal are provided. The apparatus includes one or more processors, a display unit for displaying a positional change of an object and an image set including a plurality of objects including the object, and a memory including one or more modules configured to be executed by the one or more processor, including module for displaying the image set, for changing a position of an object of the plurality of objects selected according to a user input, and for controlling the lock function if the selected object is combined with or separated from another object of the plurality of objects according to the positional change. At least one of the selected object and the other object includes a variable area which indicates an extent of the positional change of the selected object or the other object.

Abstract: A backlight unit includes a plurality of light sources, a boost circuit, a plurality of balance circuits, and a plurality of first resistors. The boost circuit boosts an input alternating current voltage and applies a driving alternating current voltage to the light sources. Each of the balance circuits includes a first capacitor and is disposed between an output terminal of the boost circuit and the light sources. Each of the first resistors connects two balance circuits among the balance circuits.

Abstract: An internal voltage generating circuit includes a first voltage application unit, a second voltage application unit, a first regulator, a second regulator, and a controller. The first and second voltage application units respectively provide a first voltage and a second voltage. The controller generates a bulk voltage, a first control signal, and a second control signal from the first and second voltages. The first regulator is enabled or disabled according to the first control signal and generates and outputs the first internal voltage based on the bulk voltage, the first voltage, and a first reference voltage. The second regulator is enabled or disabled according to the second control signal and generates and outputs the second internal voltage based on the bulk voltage, the second voltage, and a second reference voltage.

Abstract: A method and an apparatus operate multi-user Collaborative Spatial Multiplexing (CSM) in a wireless communication system. A Base Station (BS), performs uplink transmission scheduling on multiple Mobile Stations (MSs). Resources units, which have been allocated to multiple layers spatially discriminated by the uplink transmission scheduling, are permutated by applying different permutation schemes according to layers. Uplink data is received from the scheduled MSs through the permutated resource units. Each MS uses permutation schemes according to the layers allocated in a manner corresponding to the BS. Therefore, when the multi-user CSM is used, self-interferences or interferences between layers are averaged, thereby reducing variable widths of parameters of various kinds and improving the prediction property of a received SINR. As a result, a Packet Error Ratio (PER) performance is improved when data is actually transmitted.

Abstract: A system and method for processing Voice over Internet Protocol (VoIP) data including determining whether received audio data is VoIP data, transferring, when received audio data is VoIP data, the received VoIP data to a first path, and transferring, when received audio data is not VoIP data, the received audio data to a second path. The system and method can process, when received audio data is VoIP data, the received VoIP data via a VoIP data processing path including a voice engine for VoIP, instead of an audio data processing path, irrespective of types of mobile devices and types of applications.

Abstract: A semiconductor buffer structure may include a silicon substrate and a buffer layer that is formed on the silicon substrate. The buffer layer may include a first layer, a second layer formed on the first layer, and a third layer formed on the second layer. The first layer may include AlxInyGa1-x-yN (0?x?1, 0?y?1, 0?x+y?1) and have a lattice constant LP1 that is smaller than a lattice constant LP0 of the silicon substrate. The second layer may include AlxInyGa1-x-yN (0?x<1, 0?y<1, 0?x+y<1) and have a lattice constant LP2 that is greater than the lattice constant LP1 and smaller than the lattice constant LP0. The third layer may include AlxInyGa1-x-yN (0?x<1, 0?y<1, 0?x+y<1) and have a lattice constant LP3 that is greater than the lattice constant LP1 and smaller than the lattice constant LP2.

Abstract: A printing medium supplying unit usable with an image forming apparatus which includes a casing and a feeding unit to feed a printing medium, and the image forming apparatus having the same. The printing medium supplying unit includes a feeding cassette to store and to supply the printing medium; and a guide unit rotatably coupled to the feeding cassette to guide the printing medium to the feeding unit.

Abstract: A wireless power transmission system, and a method for controlling wireless power transmission and wireless power reception are provided. According to an aspect, a method for controlling a wireless power transmission may include: detecting a plurality of target devices used to wirelessly receive power; selecting a source resonating unit from among a plurality of source resonating units, based on the amount of power to be transmitted to one or more of the plurality of target devices, a coupling factor associated with one or more of the plurality of target devices, or both; and wirelessly transmitting power to a target device using the selected source resonating unit.

Abstract: A method of controlling a digital photographing apparatus includes obtaining first data and second data from a single event, storing the first and second data as multi-photography data, and generating a multi-photography folder that includes a first image corresponding to the first data and a second image corresponding to the second data.

Abstract: A method for generating a Linear Dispersion Code (LDC) for use in a Multiple-Input Multiple-Output (MIMO) communication system in which M transmit antennas are used to transmit a codeword over T time slots, each codeword encoding Q constellation symbols, is provided. The method includes determining M, T and Q, wherein M, T and Q are real numbers, generating a first matrix having 2Q columns and a predefined number m of rows, each column including a plurality of elements, each element being a real number within a respective predefined range for the respective row, deriving a second matrix having 2Q columns and m rows from the first matrix such that the elements of one row of the second matrix are dependent upon the corresponding elements of a corresponding row of the first matrix, and upon M and T, and deriving a set of 2Q LDC dispersion matrices, each including dimensions T×M, from the second matrix.

Abstract: An electromagnetic sensing apparatus is provided for a touch screen having a display and a soft key. The electromagnetic sensing apparatus includes a Printed Circuit Board (PCB) including a display area corresponding to the display and a sub-area corresponding to the soft key, a controller including channels, which controls electromagnetic sensing of the electromagnetic sensing apparatus, and a plurality of loop units that extend from the channels and output current induced by an electromagnetic field. At least one of the plurality of loop units includes a first sub-loop arranged in the display area and a second sub-loop arranged in the sub-area. At least one of the plurality of loop units includes a first sub-loop arranged in the display area and does not include a second sub-loop.

Abstract: A method and apparatus for receiving control information in a mobile communication system. A controller acquires information indicating variable Control Channel Elements (CCEs) allocated for first User Equipments (UEs) among CCEs constituting control channels, acquires information indicating fixed CCEs allocated for second UEs, selects the variable CCEs when a UE receiving the control information is included in the first UEs, and selects the fixed CCEs when the UE is included in the second UEs. A control information receiver receives the control information through the selected CCEs.