Patent application number | Description | Published |
20140049528 | VOLTAGE GENERATOR AND DISPLAY DEVICE HAVING THE SAME - A display device including a voltage generator is disclosed. The voltage generator includes an analog driving voltage generator to convert a source voltage from an external source to an analog driving voltage and to output the analog driving voltage through an output terminal, a capacitor connected between the output terminal and a ground voltage node, and a discharge circuit connected between the output terminal and the ground voltage node to discharge a current at the output terminal in response to a blank synchronization signal. | 02-20-2014 |
20140078188 | DRIVING DEVICE OF DISPLAY DEVICE - A driving device of a display device includes: a reference voltage generator configured to receive a high potential power supply voltage, a low potential power supply voltage and a medium power supply voltage and to generate reference voltages between the high potential power supply voltage and the low potential power supply voltage, where the low potential power supply voltage is lower than the high potential power supply voltage, and the medium power supply voltage has a value between the high potential power supply voltage and the low potential power supply voltage; a gray reference voltage generator configured to receive and divide the reference voltages and to generate gray reference voltages; and a data driver configured to receive the gray reference voltages and the high and medium potential power supply voltages, and to generate data voltages using the gray reference voltages and the high and medium potential power supply voltages. | 03-20-2014 |
20150026506 | ERROR DETECTING APPARATUS FOR GATE DRIVER, DISPLAY APPARATUS HAVING THE SAME AND METHOD OF DETECTING ERROR OF GATE DRIVER - Exemplary embodiments of present invention relate to an error detecting apparatus for a gate driver improving a reliability of a display apparatus, a display apparatus having the error detecting apparatus, and a method of detecting an error of the gate driver using the error detecting apparatus. An exemplary embodiment discloses an error detecting apparatus including an error detecting part configured to receive a gate signal of a gate driver and determine whether a status of the gate driver is in a normal status or an error status based on the gate signal, a memory configured to store the status of the gate driver, and a signal outputting part configured to selectively output a clock signal and an error signal based on the status of the gate driver stored in the memory. | 01-22-2015 |
20150115826 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - Provided is a display device, including: a plurality of pixels; a scan driver connected to a plurality of scanning lines connected to the plurality of pixels; and a gate signal generator configured to determine a level of a gate-on voltage according to ambient temperature and to supply the gate-on voltage to the scan driver, wherein the gate signal generator is further configured to apply a hysteresis characteristic to a thermistor voltage to vary according to the ambient temperature. | 04-30-2015 |
20150194085 | DRIVING VOLTAGE GENERATING DEVICE, DISPLAY DEVICE INCLUDING THE SAME, AND METHOD OF GENERATING DRIVING VOLTAGE - A driving voltage generating device, a display device including the same, and a method of generating a driving voltage are provided. The driving voltage generating device includes a driving voltage setting unit receiving initially set data on a driving voltage and a feedback voltage and outputting a control signal, a driving voltage trimmer receiving finely adjusted data on the driving voltage and adjusting the feedback voltage, and a DC to DC converter generating the driving voltage based on the control signal and an input voltage. | 07-09-2015 |
20150194800 | METHOD OF PROTECTING A GATE DRIVER CIRCUIT AND DISPLAY APPARATUS PERFORMING THE METHOD - A method of method of protecting a gate driver circuit configured to provide a gate line of a display panel with a gate signal includes generating a clock signal to drive the gate driver circuit, sensing an output current of the clock signal, detecting an overcurrent of the clock signal based on an overcurrent determining factor, determining whether the clock signal is in an overcurrent condition based on a count number of the overcurrent, generating a shutdown signal when the clock signal is in the overcurrent condition and blocking the clock signal from being applied to the gate driver circuit based on the shutdown signal. | 07-09-2015 |
Patent application number | Description | Published |
20080293422 | SYSTEM AND METHOD FOR UPDATING A SLEEP ID OF A MOBILE STATION IN A BWA COMMUNICATION SYSTEM - A system and method for updating a sleep identifier (SLPID) of a mobile station (MS) in a broadband wireless access (BWA) communication system having a sleep mode in which there is no transmission data and an awake mode in which there is transmission data. Upon recognizing a need to update an SLPID allocated to an MS in the sleep mode in the initial phase of the sleep mode, a base station (BS) reallocates a new SLPID to be allocated to the MS and transmits SLPID update information to the MS. Upon receiving the SLPID update information for its current SLPID during the sleep mode, the MS updates its current SLPID with the reallocated SLPID according to the received update information. | 11-27-2008 |
20090232081 | SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING A TRAFFIC INDICATION MESSAGE IN A BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - A system and method for transmitting a traffic indication message in a Broadband Wireless Access communication system. A base station (BS) transmits the traffic indication message to mobile subscriber stations (MSSs). The traffic indication message includes information on a number of MSS groups and information on a number of traffic indication indexes, each of the MSS groups includes a predetermined number of MSSs, and each of the traffic indication indexes is assigned to each of the MSS groups, and includes a bitmap including a predetermined number of bits. The predetermined number of bits is identical to the number of the MSSs included in each of the MSS groups, each of the predetermined number of the bits is assigned to each of the MSSs included in each of the MSS groups, and represents operation instruction information for each of the MSSs. | 09-17-2009 |
20090296659 | SYSTEM AND METHOD FOR PERFORMING A FAST HANDOVER IN A BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - A broadband wireless access (BWA) communication system includes a mobile subscriber station (MSS), a serving base station (BS) with which the MSS performs communication, and a plurality of neighbor BSs. The serving BS transmits, to the MSS, a handover request message including information on at least one recommended BS to which the MSS can perform a handover, among the neighbor BSs, and indication information indicating a fast handover, and transmits, to each of the recommended BSs, a handover confirm message indicating that the MSS will perform the fast handover. | 12-03-2009 |
20100029279 | METHOD FOR COMPULSORILY PERFORMING HANDOVER IN BROADBAND WIRELESS COMMUNICATION SYSTEM - Disclosed is a method for enabling a mobile station existing in a serving cell area to perform a handover procedure in a broadband mobile communication system including the mobile station, a serving base station providing a service to the mobile station, and one or more target base stations containing at least one target cell area overlapping with the serving cell area occupied by the serving base station. The method includes transmitting a handover request message from the mobile station to the serving base station when it is detected that a performance of a handover is necessary; and transmitting a handover indication message containing handover cancel information to the serving base station when the mobile station determines a cancel of the handover while the mobile station is being handed over to one or more target base stations by the serving base station. | 02-04-2010 |
20100040014 | SYSTEM AND METHOD FOR ALLOCATING A CHANNEL QUALITY INFORMATION CHANNEL IN A COMMUNICATION SYSTEM - A method for requesting allocation of a Channel Quality Information Channel (CQICH) by a Mobile Station (MS) in a communication system. The method includes switching, by the MS, from a serving anchor Base Station (BS) to a target anchor BS, detecting an absence of a CQICH allocated from the target anchor BS, and transmitting, from the MS to the target anchor BS, a CQICH allocation request. The CQICH allocation request includes a CQICH allocation request header including a basic Connection IDentifier (CID) of the MS and a Header Check Sequence (HCS) for the CQICH allocation request header. | 02-18-2010 |
20110141940 | METHOD FOR MEASURING AND REPORTING CHANNEL QUALITY IN A BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - A Mobile Subscriber Station (MSS) and an active Base Station (BS) for measuring/reporting a channel quality in a broadband wireless access communication system. The MSS includes a receiver for receiving, from an active BS, channel quality measurement information for the MSS to measure channel qualities of the active BS and a plurality of neighbor BSs, and channel quality report information defining a report mode for the MSS to report measured channel qualities of the active BS and the plurality of neighbor BSs, a processor for measuring the channel qualities of the active BS and the plurality of neighbor BSs according to the channel quality measurement information, and a transmitter for reporting the measured channel qualities of the active BS and the plurality of neighbor BSs to the active BS according to the channel quality report information. | 06-16-2011 |
20110176515 | SYSTEM AND METHOD FOR PERFORMING HANDOVER IN A BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - Disclosed is a system and a method for controlling a handover of a mobile subscriber station in a broadband wireless access communication system. When serving base station determines to perform a handover of the mobile subscriber station, neighbor base stations to which the mobile subscriber station can be handed over, from among neighbor base stations of the mobile subscriber station, are determined based on a service quality level of service being currently provided to the mobile subscriber station. A handover request signal containing information related to the determined neighbor base station to which the mobile subscriber station can be handed over is transmitted to the mobile subscriber station. The serving base station receives from the mobile subscriber station in response to the request of the handover information about one neighbor base station to which the mobile subscriber station will be handed over, and informs the neighbor base station that the mobile subscriber station will be handed over to the neighbor base station. | 07-21-2011 |
20120094711 | METHOD FOR COMPULSORILY PERFORMING HANDOVER IN BROADBAND WIRELESS COMMUNICATION SYSTEM - Methods and apparatus are provided for performing a handover by a serving base station in a communication system. A handover request message is received from a mobile station. A first handover response message is transmitted to the mobile station. The first handover response message includes a list of at least one neighbor base station. A handover indication message including a value of a handover indication type field is received. The value is determined by the mobile station from among at least two values individually indicating at least one of a handover cancel and the handover rejection. The value representing the handover cancel indicates that the mobile station intends to cancel a handover procedure, and the value representing the handover rejection indicates that the mobile station intends to reject performing handover with any of the at least one neighbor base stations in the list. | 04-19-2012 |
20120287896 | METHOD OF REQUESTING ALLOCATION OF UPLINK RESOURCES FOR EXTENDED REAL-TIME POLLING SERVICE IN A WIRELESS COMMUNICATION SYSTEM - An apparatus in a Base station (BS) and an apparatus in a Mobile Station (MS) are provided for allocating and requesting, respectively, uplink resources in a wireless communication system. The apparatus in the MS includes a transmitter for sending, to a base station, a predetermined Channel Quality Information CHannel (CQICH) codeword over a pre-allocated CQICH in a silence period, when an uplink bandwidth for an extended real-time Polling Service (ertPS) is not allocated to the mobile station, to inform the base station that the mobile station has data to send; and a receiver for receiving, from the base station, information related to an uplink bandwidth supporting a maximum rate allocated by the base station, in response to the CQICH codeword | 11-15-2012 |
Patent application number | Description | Published |
20100329915 | SCROLL COMPRESSOR COMPRISING OIL SEPARATING DRIVING SHAFT - The present invention relates to a scroll compressor, with an oil-separating drive shaft, that comprises a housing a fixed scroll which is installed inside the housing, a orbiting scroll which orbits around the fixed scroll, and a drive shaft which drives the orbiting scroll. In the orbiting scroll, a discharge hole is formed. A discharge path is formed along the longitudinal direction of the drive shaft so that discharged coolant from the discharge hole flows therethrough. At least, a part of the discharge path is inclined forward from the rotary axis to the exterior. A lubrication hole is formed in the drive shaft that penetrates from the discharge path to the outer surface of the drive shaft. | 12-30-2010 |
20110008197 | INVERTER TYPE SCROLL COMPRESSOR - The present invention relates to an inverter type scroll compressor and comprises a housing, a fixed scroll which is set up inside the housing, an orbiting scroll which orbits around the fixed scroll, a driving unit which turns the orbiting scroll, an intake port and a discharge port which are in the housing, and an inverter which faces the front surface of the fixed scroll. An intake hole penetrating to the compression chamber and a discharge hole are respectively formed in the fixed scroll and the orbiting scroll. Accordingly, the present invention is configured so that the coolant is discharged through the discharge hole after the coolant passes through the inverter and the fixed scroll and then flows into the compression chamber. | 01-13-2011 |
20110146215 | OIL SEPARATOR - An oil separator comprises: a hollow outer body having an inlet and a drain hole; and an inner tube spaced apart from an inner peripheral surface of the outer body and having a discharge hole at a center thereof. The inner peripheral surface of the outer tube guides oil toward the drain hole opposite to the discharge hole. The present invention provides an oil separator that maximizes an oil separating effect through enhancement of a centrifugal force. The present invention also provides an oil separator that maximizes an oil separating performance by preventing gas and oil from being remixed by guiding the flow direction of the oil separated by a centrifugal force using a spiral portion and a taper. | 06-23-2011 |