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| 20100158089 | CHANNEL ESTIMATION METHOD AND APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - A channel estimation method and apparatus using a self-tracking algorithm is provided for improving channel estimation accuracy. The channel estimation apparatus of a mobile terminal includes a receiver for converting a received radio signal into a baseband signal, a match filter for converting the baseband signal into a digital signal including at least two samples, a channel estimator for buffering the samples, for analyzing multipath signals to predict a maximum power position and multipath energy, and for estimating a channel by selecting a multi-tap at the maximum power position through a slew control, an equalization controller for calculating an equalization tap gain using the multi-tap selected by the channel estimator, and an equalizer for compensating for distortion in the samples output by the channel estimator using the equalization tap gain calculated by the equalization controller. | 06-24-2010 |
| 20100166095 | COOPERATIVE DIVERSITY METHOD AND COOPERATIVE DIVERSITY SYSTEM USING OPPORTUNISTIC RELAYING - There are provided a cooperative diversity method and a cooperative diversity system using opportunistic relaying. In cooperative diversity wireless communications, an optimum relay is selected considering an interference effect between adjacent cells, and the selected relay transmits a data signal received from a transmitter to a receiver. Accordingly, an optimum relay is selected considering interference between channels not only in a single cell environment but also a multi cell environment, and a signal is transmitted to a receiver through the selected relay, thereby increasing transmission efficiency and improving reliability. | 07-01-2010 |
| 20100309890 | CHANNEL ESTIMATION APPARATUS OF MOBILE COMMUNICATION RECEIVER AND TIME TRACKING METHOD FOR CHANNEL ESTIMATION - A time tracking method is provided for channel estimation of a mobile communication receiver and a related channel estimation apparatus is provided. The channel estimation apparatus includes a channel estimation control unit for analyzing and outputting a delay profile of a multipath channel by using a channel estimation value of each multi-tap, a tracking mode control unit for calculating a distance between an earliest tap and a preset margin tap by using the delay profile analysis results, and for generating and outputting a hopping tracking control signal for tracking a position of the earliest tap to a position of the margin tap at a time when the determined distance is greater than a preset hopping threshold value, and a hopping tracking mode execution unit for receiving the hopping tracking control signal and for shifting the position of the earliest tap to the position of the margin tap at a time. | 12-09-2010 |
| 20110182187 | WIRELESS COMMUNICATION SYSTEM AND METHOD FOR PERFORMING COOPERATIVE DIVERSITY USING CYCLIC DELAY - A wireless communication system and method of performing cooperative diversity using cyclic delay is provided. A transmitting terminal constituting the wireless communication system includes: a data transmitter configured to transmit data to each of at least one relay terminal and a receiving terminal; an error detection result receiver to receive an error detection result from a relay terminal that detects an error in the data among the at least one relay terminal; and a data retransmitter configured to retransmit data to the receiving terminal when it is determined each of the at least one relay terminal detects the error in the data based on the error detection result. | 07-28-2011 |
| 20110216714 | UPLINK SCHEDULING METHOD USING ONE BIT PER USER FEEDBACK - An uplink scheduling method using one bit per user feedback includes: receiving one-bit feedback of the user's channel condition from a plurality of users, the one-bit feedback of the user's channel condition corresponds to a value of the cumulative distribution function of the user's instantaneous achievable rate; selecting a user from the users whose channel condition is equal to or greater than a predetermined threshold; and transmitting data at an instantaneous achievable rate of the selected user. | 09-08-2011 |
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| 20100275842 | Evaporating apparatus - Provided is an evaporating apparatus that deposits a deposition material onto a treatment object. The evaporating apparatus includes a base, a deposition source, and first and second correction units. The deposition source deposits the deposition material onto the treatment object. The base is disposed separately from the treatment object. The deposition source is placed on a surface of the base. The first and second correction units located between the deposition source and the treatment object. The first and second correction units are disposed on outer regions of the deposition source and face each other. Each of the first and second correction units rotates to control the thickness of a layer formed by the deposition material deposited on the treatment object. | 11-04-2010 |
| 20100279021 | APPARATUS FOR DEPOSITING ORGANIC MATERIAL AND DEPOSITING METHOD THEREOF - An apparatus for depositing an organic material and a depositing method thereof, wherein a deposition process is performed with respect to a second substrate while transfer and alignment processes are performed with respect to a first substrate in a chamber, so that loss of an organic material wasted in the transfer and alignment processes can be reduced, thereby maximizing material efficiency and minimizing a processing tack time. The apparatus includes a chamber having an interior divided into a first substrate deposition area and a second substrate deposition area, an organic material deposition source transferred to within ones of the first and second substrate deposition areas to spray particles of an organic material onto respective ones of first and second substrates and a first transferring unit to rotate the organic material deposition source in a first direction from one of the first and second substrate deposition areas to an other of the first and second substrate deposition areas. | 11-04-2010 |
| 20100304025 | DEPOSITION APPARATUS AND METHOD OF CONTROLLING THE SAME - A deposition apparatus including a plurality of reaction chambers, and a method of controlling the deposition apparatus. The deposition apparatus includes a first chamber to deposit a first deposition material onto a deposition body, a second chamber to deposit a second and different deposition material onto the deposition body, a third chamber to deposit the first deposition material onto the deposition body, a transfer chamber connected to the first through third chambers, the transfer chamber to transfer the deposition body to ones of the first through third chambers and a control unit to transport the deposition body from the transfer chamber to ones of the first through third chambers. | 12-02-2010 |
| 20110073042 | Substrate Centering Device and Organic Material Deposition System - A substrate centering device for an organic material deposition system comprises: a plurality of substrate support holders configured to be reciprocally movable in a facing direction within an organic material deposition chamber and supporting both side portions of a substrate loaded by a robot; a substrate centering unit configured to be reciprocally movable at each of the substrate support holders and centering the substrate by guiding both side portions of the substrate; and a plurality of substrate clampers configured to be reciprocally movable in a vertical direction at each of the substrate support holders, and clamping the substrate that has been centered by the substrate centering unit. | 03-31-2011 |
| 20110146579 | LINEAR EVAPORATION SOURCE AND DEPOSITION APPARATUS HAVING THE SAME - A linear evaporation source and a deposition apparatus having the same are disclosed. In one embodiment ,the linear evaporation source includes i) a crucible being open on one side thereof and configured to store a deposition material and ii) a plurality of partitions dividing an internal space of the crucible, wherein each of the partitions has at least one opening in a lower portion thereof. The source further includes i) a nozzle section located on the open side of the crucible and comprising a plurality of nozzles, ii) a heater configured to heat the crucible and iii) a housing configured to accommodate to the crucible, the nozzle section, and the heater. | 06-23-2011 |
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| 20080231623 | LCD driving method using self-masking, and masking circuit and asymmetric latches thereof - Provided are a method of driving a liquid crystal panel using self-masking, a masking circuit for performing the method, and asymmetric latches. The method includes supplying power to the liquid crystal panel; receiving a horizontal start pulse signal instructing source lines of the liquid crystal panel to be driven, from a timing controller; generating a horizontal start masking signal by masking at least one pulse of the horizontal start pulse signal; and driving the source lines in response to the horizontal start masking signal. The horizontal start masking signal turns off the switches until signals output from the source driver, which correspond to image data of the liquid crystal panel, are supplied. Accordingly, it is possible to prevent unknown image data from being displayed on the liquid crystal display when the liquid crystal panel is powered on. | 09-25-2008 |
| 20090322728 | LDC panel driver with self masking function using power on reset signal and driving method thereof - In a liquid crystal display (LCD) panel driver with a self-masking function using a power-on reset signal, and in a method of driving the same, the LCD panel driver includes a power-on reset signal generation unit that generates a power-on reset signal in response to a supply voltage applied to a LCD panel; a latch unit that receives a start pulse signal instructing that source lines of the LCD panel be driven and generates first and second set signals for setting an initial value of an output signal of a flip-flop to be in a predetermined default logic level, in response to the power-on reset signal; and a counter unit that generates a start pulse masking signal by masking at least one pulse of the start pulse signal in response to the first and second set signals and the start pulse signal. | 12-31-2009 |
| 20100264968 | DELAY LOCKED LOOP AND METHOD OF DRIVING DELAY LOCKED LOOP - Provided are a delay locked loop (DLL) having a pulse width detection circuit and a method of driving the DLL. The DLL includes a pulse width detection circuit and a delay circuit. The pulse width detection circuit receives a reference clock signal, detects a pulse width of the reference clock signal, and outputs the detection result as a pulse width detection result signal. The delay circuit receives and delays the reference clock signal, and outputs the delayed reference clock signal as an output clock signal. The delay circuit receives the pulse width detection result signal from the pulse width detection circuit, and controls a time delay in the reference clock signal in response to the pulse width detection result signal. | 10-21-2010 |
| 20110012888 | POWER-OFF DISCHARGE CIRCUIT, AND SOURCE DRIVER CIRCUIT HAVING THE SAME - A power-off discharge circuit comprises a power voltage detection unit that detects whether a first power voltage for driving a source driver circuit is blocked and generates a discharge control signal, and a discharge unit that discharges a load circuit in a display panel based on the discharge control signal. | 01-20-2011 |
| 20110058635 | Receiver for Receiving Signal Containing Clock Information and Data Information, and Clock-Embedded Interface Method - A receiver for receiving information that contains clock information and data information and a clock-embedded interface method. In the clock-embedded method, a clock signal and data may be reconstructed by receiving a pair of differential signals that contain clock information and data information and by using a change in a common voltage of the pair of differential signals. | 03-10-2011 |
| 20110199397 | LIQUID CRYSTAL PANEL DRIVING METHOD, AND SOURCE DRIVER AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE METHOD - Provided are a method of driving a liquid crystal panel which prevents unintended digital image data from being displayed on a liquid crystal panel when power is provided or interrupted, and a source driver and a liquid crystal display apparatus. The source driver includes output buffers; output pads; and a switching unit which is disposed between the output buffers and the output pads and controls an electrical connection state of the output pads. If a level up or a level down of a power voltage occurs, the switching unit prevents output signals of the output buffers from being transmitted to the liquid crystal panel via corresponding output pads and performs at least one of a charge sharing operation for connecting the output pads to each other and a discharging operation for providing a discharge path from the output pads to a ground terminal, in a preset period. | 08-18-2011 |
