Patent application number | Description | Published |
20080231404 | INTEGRATED TYPE TRANSFORMER - There is provided an integrated type transformer that reduces the volume by integrating a plurality of transformers transmitting power for driving a plurality of lamps in an inverter circuit for an LCD into one transformer structure. An integrated type transformer according to an aspect of the invention includes a bobbin unit including a bobbin body having a predetermined length and a through hole therein in a longitudinal direction of the bobbin unit, and a core unit including an inner core inserted into the through hole of the bobbin unit, and an outer core formed along one surface in the longitudinal direction among outer circumferential surfaces of the bobbin unit and electromagnetically coupled to the inner core to form one magnetic path. | 09-25-2008 |
20090021179 | BACKLIGHT DRIVING SYSTEM FOR LIQUID CRYSTAL DISPLAY - There is provided a backlight driving system for a liquid crystal display that can reduce size and weight of a product because a DC-DC converter is not used when commercial AC power is converted into lamp driving power. A backlight driving system for a liquid crystal display according to an aspect of the invention includes a power supply unit converting commercial alternating current (AC) power into direct current (DC) power having a voltage level set beforehand, an inverter unit converting the DC power from the power supply unit into AC power at a one-to-one conversion ratio set beforehand, a boosting unit boosting the AC power from the inverter unit into lamp lighting power set beforehand; and a lamp group receiving the lamp lighting power from the boosting unit to emit light. | 01-22-2009 |
20100013695 | UNIVERSAL REMOTE CONTROLLER AND REMOTE CONTROL METHOD THEREOF - A universal remote controller and a remote control method thereof are provided. The universal remote controller includes a communication module which communicates with a plurality of devices; an input unit through which a user command is input; and a controlling unit which determines a pointed device, among the plurality of devices, that the universal remote controller is pointing towards, and controls the communication module to transmit the user command to the pointed device to control the pointed device | 01-21-2010 |
20100124407 | METHOD OF STORING STATUS INFORMATION ABOUT CONTENT REPRODUCING DEVICE, AND METHOD AND APPARATUS FOR ALLOWING CONTENT TO BE AUTOMATICALLY REPRODUCED USING THE STATUS INFORMATION - Provided are a method of storing status information in a first content reproducing device, and a method of allowing content to be automatically reproduced in a second content reproducing device based on the status information stored in the first content reproducing device. The method of storing status information includes: monitoring an operation of the first content reproducing device; generating status information about the monitored operation; and storing the status information in the first content reproducing device. The method of allowing content to be automatically reproduced includes: checking if the first and second content reproducing devices are connected to each other; reading a log file recording the status information from the first content reproducing device if the first and second content reproducing devices are connected to each other; interpreting the status information; and selectively performing an operation according to a result of the interpreting. | 05-20-2010 |
20100216399 | WIRELESS COMMUNICATION METHOD AND APPARATUS - Provided are wireless communication method and apparatus. The wireless communication method includes: receiving wireless communication module information of a second terminal from the second terminal through a first communicator of a first terminal; and performing a wireless communication with the second terminal using the wireless communication module information through a second communicator of the first terminal. | 08-26-2010 |
20100237799 | LED DRIVING CIRCUIT - The present invention provides an LED driving circuit including: an inverter unit for switching an input power source; a plurality of transformers including a plurality of primary windings connected to the inverter unit and connected to each other in series and a plurality of secondary windings each of which is coupled with each of the primary windings; a plurality of rectification units each of which is connected to each of the secondary windings; and a plurality of LEDs each of which is connected to each of the rectification units. | 09-23-2010 |
20110204804 | BACKLIGHT UNIT DRIVER - There is provided a backlight unit driver capable of driving multi-channel lamps of a backlight unit, especially LED lamps, by supplying a driving power to the lamps using a single transformer and maintaining the current balance of the driving power supplied to each of the lamps. | 08-25-2011 |
20110222849 | OPTICAL TRANSMISSION APPARATUS FOR VISIBLE LIGHT COMMUNICATION - Disclosed herein is an optical transmission apparatus for visible light communication. The optical transmission apparatus includes a power conversion unit, a drive unit, an encoding unit, a control unit, and a detection unit. The power conversion unit provides Direct Current (DC) power to the lighting LED lamps. The drive unit is operated using a switching drive method and supplies operating current to the lighting LED lamps. The encoding unit is connected to an external network, receives and encodes data, and provides it to the drive unit. The control unit controls the operation of the power conversion unit, the drive unit, and the encoding unit. The detection unit measures the strength of a visible light signal sent by the lighting LED lamps. | 09-15-2011 |
20110234111 | LAMP DRIVER - There is provided a lamp driver including: a power supplying part switching an input power, supplying a driving power to at least one lamp, and controlling brightness of the at least one lamp according to a dimming signal; a signal supplying part supplying a first comparison result signal obtained by comparing a current sensing signal sensing a current flowing through the at least one lamp with a reference signal having a current level set beforehand when the dimming signal is a logic high signal, and supplying a second comparison result signal having a voltage level set beforehand when the dimming signal is a logic low signal; and a controlling part controlling the switching of the power supplying part according to a signal being supplied by the signal supplying part. | 09-29-2011 |
20120153857 | POWER SUPPLY AND DISPLAY DEVICE INCLUDING THE SAME - The power supply includes: an electromagnetic interference filter including a first filter which has a pair of electromagnetically coupled cores having at least two leg parts, first and second bobbins each having a tube-shaped body part having a penetration hole into which each of the leg parts is inserted and having a winding region defined as the circumference of the outer peripheral surface of the body part, and first and second coils respectively wound around the first and second bobbins to remove common mode electromagnetic interference included in power transmitted from a power line, the electromagnetic interference filter removing differential mode electromagnetic interference due to leakage inductance formed due to the leakage of magnetic flux flowing through the cores; a power factor corrector correcting a power factor of the power where the electromagnetic interference is removed; and a power converter switching the power-factor-corrected power into a driving power having a predetermined voltage level. | 06-21-2012 |
20120176102 | POWER CONTROL METHOD AND APPARATUS FOR TRACKING MAXIMUM POWER POINT IN A PHOTOVOLTAIC SYSTEM - A power control method for tracking a Maximum Power Point (MPP) in a photovoltaic system including a solar cell and a boost converter. The power control method includes finding the MPP by applying a continuous ON/OFF signal to the boost converter as a first control signal for controlling a duty ratio of the boost converter, and maintaining an operating point of the photovoltaic system at the MPP by applying a second control signal for controlling the duty ratio to the boost converter depending on a constant-voltage command. In tracking an MPP in a photovoltaic system, an MPPT algorithm may remain at the MPP, without self oscillation, improving fast dynamic characteristics upon a change in solar radiation. | 07-12-2012 |
20120223797 | CHOKE COIL - Provided is a choke coil including: a first primary winding portion formed by winding a primary coil by n turns; a second primary winding portion formed by winding the primary coil by N turns; a first secondary winding portion formed by winding a secondary coil by N turns; and a second secondary winding portion formed by winding the secondary coil by n turns, wherein the n and N satisfy the condition: n≦N. | 09-06-2012 |
20130073626 | INTEGRATED OPERATION METHOD FOR SOCIAL NETWORK SERVICE FUNCTION AND SYSTEM SUPPORTING THE SAME - Provided are a Social Network Service (SNS) function integration operation method and a system supporting the same. The SNS function integration operation system, includes a plurality of SNS servers providing a plurality of SNS information; and a portable terminal for subscribing to the plurality of SNS servers in order to receive the plurality of SNS information and provide a plurality of SNS functions corresponding to the plurality of SNS information, and providing at least one of an SNS integration operation user interface that integrates a list of the plurality of SNS functions and the plurality of SNS information, and for providing an SNS information screen corresponding to a detailed view of SNS information selected from the plurality of SNS information. | 03-21-2013 |
20130097512 | APPARATUS AND CONTENT PLAYBACK METHOD THEREOF - An apparatus and a content playback method of playing content of a wired/wireless network-connectable apparatus, includes discovering a connectable device with the apparatus through the wired/wireless network using an application provided in the apparatus, finding executable content from the discovered device, displaying a content metaphor corresponding to the found content and a device metaphor corresponding the discovered device on a first screen of the apparatus, and executing the found executable content through the discovered device. | 04-18-2013 |
20130101270 | METHOD OF STORING STATUS INFORMATION ABOUT CONTENT REPRODUCING DEVICE, AND METHOD AND APPARATUS FOR ALLOWING CONTENT TO BE AUTOMATICALLY REPRODUCED USING THE STATUS INFORMATION - Provided are a method of storing status information in a first content reproducing device, and a method of allowing content to be automatically reproduced in a second content reproducing device based on the status information stored in the first content reproducing device. The method of storing status information includes: monitoring an operation of the first content reproducing device; generating status information about the monitored operation; and storing the status information in the first content reproducing device. The method of allowing content to be automatically reproduced includes: checking if the first and second content reproducing devices are connected to each other; reading a log file recording the status information from the first content reproducing device if the first and second content reproducing devices are connected to each other; interpreting the status information; and selectively performing an operation according to a result of the interpreting. | 04-25-2013 |
20130147612 | UNIVERSAL REMOTE CONTROLLER AND REMOTE CONTROL METHOD THEREOF - A universal remote controller and a remote control method thereof are provided. The remote controller includes a display screen, a communication module configured to communicate with a plurality of devices, an input unit configured to receive a user command, a controlling unit configured to receive identification information from a device of the plurality of devices which is pointed at by the remote controller through the communication module, control the display screen to display a user interface customized for the device corresponding to the identification information, and receive information input through the user interface for communication with the device so that the remote controller can operate with the device. | 06-13-2013 |
Patent application number | Description | Published |
20090251120 | HIGH VOLTAGE POWER SUPPLY - There is provided a high voltage power supply capable of reducing voltage stress of a voltage multiplying device. The high voltage power supply includes: a power converter switching on/off and converting an input direct current power into a direct current power having a preset voltage level; and a voltage multiplier including a first multiplying cell multiplying the voltage level of the direct current power from the power converter, wherein the first multiplying cell includes: first and second capacitors charging the direct current power from the power converter, respectively; a first diode providing a path for transferring the direct current power when the power converter is switched off; and a second diode providing a path for transferring the direct current power when the power converter is switched on. | 10-08-2009 |
20090316447 | POWER SUPPLY HAVING MAXIMUM POWER POINT TRACKING FUNCTION - The present invention relates to power supplies, and more particularly, to a power supply having a maximum power point tracking function that can reduce manufacturing costs and circuit size by using a maximum power point tracking section with a simplified circuit in a solar photovoltaic power generator supplying power using sunlight instead of using a micro controller, the maximum power point tracking section that controls power switching according to a result of integration of a value obtained by dividing a power variation by a voltage variation to track a maximum power value. A power supply having a maximum power point tracking function according to an aspect of the invention may include: a converter section switching input power, and converting the switched input power into predetermined DC power; and a maximum power point tracking section detecting a voltage and a power value of the input power, dividing a variation of the detected power by a variation of the detected voltage, integrating a result of the division, and controlling the switching operation of the converter section according to a value of the integration. | 12-24-2009 |
20090316452 | POWER SUPPLY HAVING MAXIMUM POWER POINT TRACKING FUNCTION - The present invention relates to power supplies, and more particularly, to a power supply having a maximum power point tracking function that controls power switching so that a detected power value is within a reference range having a maximum power point in a predetermined current-voltage curve. A power supply having a maximum power point tracking function according to an aspect of the invention includes: a converter section switching input power and converting the switched input power into predetermined DC power; and a maximum power point tracking section detecting a power value determined according to a switching operation of the converter section among power values included in a predetermined power-voltage curve, and controlling the switching operation of the converter section so that the detected power value is located within a predetermined reference range having a maximum power value among the power values included in the power-voltage curve. | 12-24-2009 |
20100014321 | VARIABLE SWITCHING FREQUENCY TYPE POWER SUPPLY - There is provided a variable switching frequency type power supply that can achieve high efficiency by fixing a switching duty cycle to 50% and varying switching frequency. A variable switching frequency type power supply according to an aspect of the invention may include: a switching unit switching input power; a transformation unit converting a voltage level of the power switched by the switching unit into a predetermined voltage level; a rectification unit rectifying the power converted by the transformation unit; and a control unit fixing a switching duty cycle of the switching unit to a predetermined switching duty cycle, and varying switching frequency of the switching unit according to a voltage level of output power. | 01-21-2010 |