Abstract: Provided is a method of manufacturing an impeller, the method including: providing a disc comprising a plurality of blades; casting a shroud to a first state in a mold; providing a mounting space in the mold; mounting the disc in the mounting space and casting the shroud to a second state with the mounted disc.

Abstract: An organic light-emitting display device includes: an organic light-emitting panel comprising a plurality of pixel regions, each pixel region comprising a scan line and a data line crossing each other, each pixel region further comprising an organic light-emission element and a drive transistor configured to drive the organic light emission element; and a circuit configured to sense a threshold voltage of the drive transistor in a sensing interval and control a light emission of the organic light emission element within the pixel region in a display interval.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: An electronic apparatus is capable of transferring contents on a cloud system to a device connected to a DLNA. In a method for operating a client on the cloud service system, a stream meta data table including information of one or more contents is received from a server. Meta data of contents selected from the contents are converted such that the meta data coincide with a format used by a device selected from one or more devices connected to a network. The selected contents are streamed from the server and transferred to the selected device.

Abstract: The present disclosure relates to providing user information. In a method for requesting user information of an information requesting device in a mobile communication system, the method includes selecting a callee from a user, acquiring a user identifier (ID) of the selected callee, transmitting a user information request for the selected callee and the user ID to a relay server, evaluating whether an admission message is received from the relay server, and if the admission message is received, receiving user information from the relay server.

Abstract: An organic electroluminescent display device includes a power supply unit outputting a driving voltage, a base voltage and a reference voltage, a source driving unit outputting a data voltage, a gate driving unit outputting a positive scan signal and a negative scan signal, a timing control unit controlling the source driving unit and the gate driving unit, and a display unit receiving the driving voltage, the base voltage, the reference voltage, the positive scan signal and the negative scan signal, the display unit including an organic light-emitting diode that has driving currents depending on the data voltage.

Abstract: A method is provided for supporting mobility of a Mobile Node (MN) in a multi-hop Internet Protocol (IP) network, in which an MN that has moved from a source Personal Area Network (PAN) to a target PAN, sends a Router Solicitation (RS) message with an option for requesting its profile to a gateway of the target PAN, and receives a Router Advertisement (RA) message from the gateway in response to the RS message. The RA message includes a home prefix of the MN as the requested profile. The method supports mobility of MNs, enables unicast communication, and facilitates efficient use of the network.

Abstract: A method is provided for registering a mobile router in an Internet Protocol version 6 over Low power Wireless Personal Area Network (6LoWPAN) network. The mobile router detects movement into a wireless network through the reception of a beacon message, and sends a Router Solicitation (RS) message requesting registration in the wireless network to a gateway. The gateway acquires an address of the mobile router from the RS message, stores the acquired address, assigns a new address to be used in the wireless network to the mobile router, and sends a Router Advertisement (RA) message with assigned address information and gateway address information, to the mobile router. The mobile router acquires the assigned address information and the gateway address information from the RA message.

Abstract: An organic electroluminescent display device includes an organic light-emitting diode, a first transistor outputting a data voltage by an nth scan signal (n is a natural number), a second transistor providing a current to the organic light-emitting by the data voltage, a capacitor storing the data voltage, and a third transistor supplying the second transistor and the capacitor with a pre-charge voltage by an (n?1)th scan signal, the pre-charge voltage having an opposite polarity to the data voltage.

Abstract: An apparatus and a method support bidirectional pairing between devices. A connectable peripheral device is discovered. A list of discovered connectable peripheral devices is displayed. When a peripheral device is selected from the displayed list of the discovered connectable peripheral devices, an indicator operation request message for operating an indicator of the selected peripheral device is generated and transmitted to the selected device. The selected peripheral device operates the indicator according to the indicator operation request message to indicate a connection request from the device.

Abstract: Disclosed herein are a light emitting display which can compensate for a threshold voltage of a driving switching element, and a method for driving the same. A light emitting display includes a pixel circuit that outputs a driving current corresponding to a data voltage from a data line using a scan signal, a first driving voltage and a second driving voltage; and a light emitting element that emits light by the driving current from the pixel circuit.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: A method and apparatus of a first device for selecting at least one of a plurality of second devices to be accessed. The method includes transmitting pieces of media data to the corresponding plurality of second devices one-to-one, and determining at least one of the plurality of second devices to be accessed by the first device according to a user's selection on the basis of the pieces of media data being reproduced by both the first device and each of the plurality of second devices.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: An organic light emitting diode display for removing a voltage which is charged into a gate electrode of a driving transistor before a current frame is changed to a next frame is disclosed. In the organic light emitting diode display, a display panel has a plurality of pixels that include an organic light emitting diode. A timing controller controls a driving timing of the inputted video data and controls a supply timing of a refresh voltage. A data driver converts a digital data which is outputted from the timing controller for a current frame into an analog data voltage to supply it to the pixels, and then supplies the refresh voltage to pixels which are selected among the pixels in accordance with a control of the timing controller.

Abstract: A method and apparatus for providing a gateway for IPv6 packet transmission in a WLAN system are provided, in which a gateway takes over a TCP/IP protocol stack from a legacy 6LoWPAN node for providing a gateway for IPv6 packet transmission in a WLAN system. One or more service request messages for data communications are received from a plurality of 6LoWPAN nodes, and a virtual interface is generated for allocating IPv6 addresses to the 6LoWPAN nodes by adding a predetermined IPv6 address prefix to addresses of the 6LoWPAN nodes set in the service request messages. A socket adaptation layer is interfaced for receiving the IPv6 addresses from the virtual interface and transmitting data packets to the 6LoWPAN nodes, and when data packets are transmitted and received to and from the 6LoWPAN nodes, an on-going file is controlled and managed, and the data packets are routed.

Abstract: An organic light emitting diode display for changing a data corresponding to an image property to prevent a deterioration of a life span of an organic light emitting diode device and to improve a picture quality, and a driving method thereof are disclosed. In the method, digital data of an input image of a screen are analyzed to analyze an accumulated density distribution for each gray scale range of an image which to be displayed on the screen. The digital data of the input image is modulated to lower a tilt of a gamma curve corresponding to a pre-set high gray scale range among gamma curves of the input image if data belonged to the high gray scale range turned out to be dominant according to the analyzed result.

Abstract: Disclosed is an organic light emitting diode display and method for minimizing a change of a driving current of R, G, and B organic light emitting diode devices to improve a display quality when a temperature within a panel is changed and an organic light emitting diode device is degraded.

Abstract: An organic light emitting diode display device for changing a gamma reference voltage step by step in accordance with an image brightness of a current frame to reduce damage with which the organic light emitting diode and the driving transistor thereof are applied is disclosed. In the organic light emitting diode display device, a brightness detector calculates a maximum brightness value of each pixel using inputted image data of current frame. An adder adds all maximum brightness values of each pixel which are detected by the brightness detector. An average value calculator calculates an average brightness value of a current frame using an added value of maximum brightness values which are added by the adder. A gamma weight calculator calculates a gamma reference voltage weight which is set to correspond to the calculated average brightness value among predetermined gamma reference voltage weights.

Abstract: An apparatus and method for synchronization between devices through a wireless connection are provided. The method includes sensing at least one event, selecting a policy corresponding to the at least one event from one or more preset policies, generating a transmission message including the event corresponding to the selected policy and transmitting to a counterpart device the transmission message, receiving from the counterpart device a reception message including the at least one event, confirming the policy corresponding to the event included in the reception message, and synchronizing a folder in real time by performing the event based on the policy.