Patent application number | Description | Published |
20090033601 | Organic light emitting display and its driving method - An organic light emitting display and its driving method includes: a pixel unit divided into a first display region and a second display region; a light emitting control driver outputting in parallel a plurality of light emitting control signals through a plurality of light emitting control lines; a switch unit including a plurality of switches each respectively coupled to one of the plurality of light emitting control lines to switch the transfers of the light emitting control signals to each have a turn-on period and a turn-off period within a period of one frame; and a luminance controller controlling the switching time of the switch unit using image signals and setting the number of switchings of the plurality of light emitting control lines coupled to the first display region differently from that of the plurality of light emitting control lines coupled to the second display region. | 02-05-2009 |
20090135106 | ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD FOR THE SAME - An organic light emitting display and a driving method for the same for preventing picture playback disruption during the playback of a moving picture. An organic light emitting display includes: a display region including a plurality of pixels for displaying an image; a frame memory for storing image signals of the image; a data driver for receiving the image signals to generate data signals; a scan driver for generating scan signals; and a controller for controlling the frame memory to store the image signals and to transfer the image signals stored in the frame memory to the data driver. The controller controls the frame memory to store the image signals for at least two horizontal synchronization periods before they are transferred to the data driver. | 05-28-2009 |
20110149821 | METHOD AND SYSTEM FOR MANAGING AN INACTIVE INTERVAL OF A BASE STATION - A method and system for managing an inactive interval of a Base Station (BS) are provided, in which the BS transmits a preferred Low-Duty Mode (LDM) pattern to a coordination server that manages LDM patterns of BSs, receives an LDM pattern from the coordination server, the LDM pattern being determined for the BS by the coordination server, taking into account the preferred LDM pattern and LDM patterns of neighbor BSs, and operates in an active interval and an inactive interval according to the received LDM pattern. | 06-23-2011 |
20110268176 | APPARATUS AND METHOD FOR ALLOCATING A DATA RATE IN A MULTI-ANTENNA TRANSMITTER - An apparatus and method for allocating a data rate in a multi-antenna system are provided, wherein a noise threshold corresponding to a modulation scheme, a coding rate, or a combination of both applied to a base layer from among a plurality of layers is set as a reference noise threshold, and a data rate is allocated to an enhanced layer among the plurality of layers, based on the reference noise threshold and a use or non-use of hierarchical transmission. | 11-03-2011 |
20110310987 | UPLINK POWER CONTROL METHOD FOR MOBILE COMMUNICATION SYSTEM - A per-layer and per-antenna uplink power control method for MIMO transmission of PUSCH in a Long Term Evolution-Advanced (LTE-A) system is provided. A transmit power for a plurality of transmit antennas is calculated based on a power control parameter received in a downlink. Uplink data is transmitted through the plurality of transmit antennas by applying the transmit power to each of a plurality of codewords. | 12-22-2011 |
20120320863 | WIRELESS COMMUNICATION SYSTEM AND METHOD FOR RETRANSMISSION PROCESS THEREOF - The objective of the present invention is to control the HARQ process for two codewords assigned to each UE in downlink of the LTE-A system efficiently. In the proposed method, particularly when one of the two codewords is decoded successfully but the other is not in the HARQ process, the UE can be scheduled for both the retransmission and initial transmission by means of the control signal of PDCCH or ACK/NACK information of PHICHs. The proposed method is capable of reducing resource amount necessary for the control signal transmission without increasing the PDCCH decoding complexity of the UE. | 12-20-2012 |
20130044140 | METHOD AND APPARATUS FOR NAVIGATING CONTENT ON SCREEN USING POINTING DEVICE - A method and an apparatus for navigating content larger than a display screen of a terminal using a pointing device are provided. The method includes acquiring, when a pointing position is changed on a screen partially displaying a content that is larger than the screen, a current pointing position by tracking the change of the pointing position, comparing an X axis displacement and a Y axis displacement from an initial pointing position as a starting position to the current pointing position with a predefined X axis threshold value and Y axis threshold value, respectively, determining a movement direction as one of an X axis, a Y axis, and an XY (diagonal) axis directions based on the comparison result, and scrolling the content in the movement direction to display an off-screen part of the content. | 02-21-2013 |
20130163569 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING REFERENCE SIGNAL TRANSMISSION INFORMATION IN CELLULAR RADIO COMMUNICATION SYSTEM USING COOPERATIVE MULTI-POINT SCHEME - An apparatus and method for transmitting/receiving reference signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme is provided. In the reference signal transmission information transmission method, a Central Control Apparatus (CCA) transmits measurement set information related to a measurement set including at least one reference signal resource unit through which a reference signal is transmitted, and reference signal transmission timing information including information related to a timing at which the reference signal is transmitted to a User Equipment (UE), and transmits reference signal non-transmission timing information including information related to a timing at which the reference signal is not transmitted through the reference signal resource unit to the UE. | 06-27-2013 |
20130178220 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DOWNLINK DATA CHANNEL SIGNAL TRANSMISSION INFORMATION IN CELLULAR RADIO COMMUNICATION SYSTEM USING COOPERATIVE MULTI-POINT SCHEME - An apparatus and a method for transmitting/receiving downlink data channel signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (COMP) scheme are provided. In the downlink data channel signal transmission information transmission method, a Base Station (BS) transmits downlink data channel signal transmission information including information related to Resource Elements (REs) scheduled for a downlink data channel signal transmission to a User Equipment (UE), and transmits downlink data channel signal non-transmission information including information related to REs through which a downlink data channel signal is not transmitted among the REs scheduled for the downlink data channel signal transmission to the UE. | 07-11-2013 |
20130182594 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL - An apparatus and a method for generation of channel state information in a wireless communication system are provided. The method includes transmitting, by an evolved Node B (eNB), a first reference signal to a plurality of User Equipments (UEs), receiving channel state information generated based on the first reference signal from the plurality of UEs, selecting candidate UEs to which wireless resources are to be allocated and transmitting second reference signals to the selected candidate UEs, receiving channel state information generated based on the second reference signals from the candidate UEs, and selecting final UEs, to which wireless resources are to be allocated, from the candidate UEs based on the channel state information generated based on the second reference signals, and transmitting control information for data reception to the selected final UEs. | 07-18-2013 |