Abstract: A display panel for simplifying a manufacturing process and having high energy efficiency using an OLED as a light source and also using RGB, QDs, and an LPR layer capable of improving color reproducibility. In an aspect, an LPR layer is interposed between a color filter layer and a fluorescent substance layer so that light is circulated within the fluorescent substance layer again. Accordingly, there is provided a display panel capable of reducing the amount of light absorbed through the color filler by increasing the light absorption coefficient of the fluorescent substance layer and of maximizing energy efficiency by increasing the intensity of light passing through the color filter.

Abstract: An apparatus and a method for estimating a Doppler frequency in a mobile communication system are provided. The apparatus includes an estimator for temporarily estimating a maximum Doppler frequency based on channel values sampled according to a first period in a frame, a detector for calculating at least one correlation value between at least one channel value additionally sampled in the frame and at least one channel value sampled over the first period, and for determining whether aliasing occurs based on the correlation value, and a determiner for determining a final maximum Doppler frequency according to the occurrence or non-occurrence of the aliasing.

Abstract: An apparatus and method for detecting high speed shared control channel of a communication terminal is provided, which recognizes decoding reliability for each of high-speed shared control channel by decoding each of a plurality of high-speed shared control channels; decides a maximum and a minimum in the decoding reliability, calculates a difference between the maximum and the minimum to compare the calculated difference with a preset critical value; and detects and processes a high-speed shared control channel corresponding to the maximum, when the difference exceeds the critical value. Accordingly, even though the wireless environment is inferior, the decoding reliability of an HS-SCCH can be more accurately decided in an HS-SCCH detection apparatus of the communications terminal and the detection performance of the HS-SCCH can be improved in a communication terminal.

Abstract: A display panel and a method for manufacturing the display panel are discussed. The display panel includes a substrate; an active layer on the substrate; and a passivation layer on the active layer, wherein the active layer includes a channel part, a first electrode connection part and a second electrode connection part on opposite sides of the channel part in a first direction, and a first taper part and a second taper part on opposite sides of the channel part in a second direction crossing the first direction, and wherein a carrier concentration of each of the first taper part and the second taper part is different from those of the channel part, the first electrode connection part and the second electrode connection part.

Abstract: A method for minimizing handoff latencies when a handoff is performed in a wireless network. An access point (AP) or base station associated to a current wireless station (STA) allows information required for a reassociation to the STA to be propagated to handoff-capable neighboring APs or base stations. When the STA moves, a neighboring AP or base station performs the reassociation to the STA on the basis of context. When a handoff procedure is performed, the time taken to receive context of a corresponding STA is reduced, such that a fast handoff can be implemented.

Abstract: Phosphor film, and light emitting device and system using the same are provided. The light emitting device comprises a package body, a light emitting element disposed on the package body to generate first light, one or more first quantum dot phosphor layers formed above the light emitting element to perform wavelength conversion of the first light and generate second light, and one or more second quantum dot phosphor layers formed above the light emitting element so as not to overlap with the first quantum dot phosphor layers to perform wavelength conversion of the first light and generate third light different from the second light.

Abstract: A method for minimizing handoff latencies when a handoff is performed in a wireless network. An access point (AP) or base station associated to a current wireless station (STA) allows information required for a reassociation to the STA to be propagated to handoff-capable neighboring APs or base stations. When the STA moves, a neighboring AP or base station performs the reassociation to the STA on the basis of context. When a handoff procedure is performed, the time taken to receive context of a corresponding STA is reduced, such that a fast handoff can be implemented.

Abstract: A method for receiving a signal using an equalizer-based receiver is provided. The method includes compensating for a phase offset of a received signal for each of M cells, and performing channel estimation on the phase offset-compensated received signal for each of the M cells, compensating for an inter-cell timing offset in a channel estimate for each of the M cells, reconstructing an interference component of a reference signal using the compensated channel estimate for each of the M cells, regenerating a phase offset difference between the serving cell and each of the multiple interfering cells for each of the M cells, adding the phase offset difference to the interference component of a reference signal for each of the M cells, cancelling, from the received signal, the interference component of a reference signal with the phase offset for each of the M cells, and equalizing the interference component-cancelled received signal.

Abstract: Provided are an apparatus and method for providing a preview of a menu object in a technique of displaying a menu object. The apparatus includes an input unit that receives an event from a user, an event processing unit that highlights objects, from among objects displayed on a screen, to which a user input can be applied according to the received event, and a display unit that displays the highlighted objects.

Abstract: An apparatus and method for rate dematching in a communication system are provided. The apparatus includes an input sequence generator, an error calculator, and a puncture/repetition determiner. The input sequence generator calculates if current input data among data, which are input in interleaved sequence, corresponds to any nth sequence among before-interleaved sequence. The error calculator calculates an error for the current input data using the calculated sequence. The puncture/repetition determiner determines type of the current input data using the error for the current input data.

Abstract: An apparatus and a method for estimating a Doppler frequency in a mobile communication system are provided. The apparatus includes an estimator for temporarily estimating a maximum Doppler frequency based on channel values sampled according to a first period in a frame, a detector for calculating at least one correlation value between at least one channel value additionally sampled in the frame and at least one channel value sampled over the first period, and for determining whether aliasing occurs based on the correlation value, and a determiner for determining a final maximum Doppler frequency according to the occurrence or non-occurrence of the aliasing.

Abstract: An application program executing a method and an apparatus for improving the speed of executing an application program for a digital television (DTV) are provided. If log information exists for a resource used by an application program, the resource indicated by the log information is requested, and the application program is executed using the resource transmitted as per the request. Accordingly, it is possible to rapidly provide the application program with the resource used by the application program, thereby increasing the speed of executing the application program.

Abstract: An apparatus and method for rate dematching in a communication system are provided. The apparatus includes an input sequence generator, an error calculator, and a puncture/repetition determiner. The input sequence generator calculates if current input data among data, which are input in interleaved sequence, corresponds to any nth sequence among before-interleaved sequence. The error calculator calculates an error for the current input data using the calculated sequence. The puncture/repetition determiner determines type of the current input data using the error for the current input data.

Abstract: A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits proactive keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key. In another embodiment of the present invention, an authentication server transmits proactive keys needed for roaming to neighbor APs to which the STA is likely to move, so that when the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key.

Abstract: The present invention relates to an authentication method for wireless distribution system including at least one base station providing access service to mobile stations in a coverage of the base station. In the authentication method, an unregistered base station receives an authentication request from a mobile station, multicast an identity request for identifying the mobile station over the wireless distribution system, receives identity responses from at least one base station in response to the identity request, and performs authentication of the mobile station on the basis of the identity responses. The distributed authentication method of the present invention is performed without AAA server, when a new base station is installed or isolated base stations are joined, such that it is possible to extend the network in an easy manner without degradation of the security degree and additional labor burden of the operator.

Abstract: An apparatus and method for detecting high speed shared control channel of a communication terminal is provided, which recognizes decoding reliability for each of high-speed shared control channel by decoding each of a plurality of high-speed shared control channels; decides a maximum and a minimum in the decoding reliability, calculates a difference between the maximum and the minimum to compare the calculated difference with a preset critical value; and detects and processes a high-speed shared control channel corresponding to the maximum, when the difference exceeds the critical value. Accordingly, even though the wireless environment is inferior, the decoding reliability of an HS-SCCH can be more accurately decided in an HS-SCCH detection apparatus of the communications terminal and the detection performance of the HS-SCCH can be improved in a communication terminal.

Abstract: A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits proactive keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key. In another embodiment of the present invention, an authentication server transmits proactive keys needed for roaming to neighbor APs to which the STA is likely to move, so that when the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key.

Abstract: Disclosed is a method for managing mobility of mobile nodes between heterogeneous networks in an IP-based mobile communication system including a plurality of access nodes for providing an IP service to mobile nodes located in their service areas and a neighbor graph server for supporting connection to the access nodes by the mobile nodes. The method includes classifying the access nodes according to available service level; classifying the mobile nodes according to required service level, generating service level neighbor graphs each including access nodes supporting the same service level; generating a mapping table for mapping the mobile nodes to the neighbor graphs according to service level required by the mobile node; and supporting movement of a mobile node between networks using the neighbor graph and the mapping table.

Abstract: An application program executing a method and an apparatus for improving the speed of executing an application program for a digital television (DTV) are provided. If log information exists for a resource used by an application program, the resource indicated by the log information is requested, and the application program is executed using the resource transmitted as per the request. Accordingly, it is possible to rapidly provide the application program with the resource used by the application program, thereby increasing the speed of executing the application program.

Abstract: A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits proactive keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key. In another embodiment of the present invention, an authentication server transmits proactive keys needed for roaming to neighbor APs to which the STA is likely to move, so that when the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key.