Abstract: Provided is an operating method of an advertisement management device, the operating method including: based on log data of a plurality of users collected from a certain game, setting at least one group for the certain game; registering advertisement information to be provided to the at least one group; requesting a plurality of platform servers capable of providing advertisements to provide the advertisement information for each of the at least one group; obtaining, from the plurality of platform servers, feedback information of advertisements provided for each of the at least one group; and based on the feedback information, performing management of the advertisement information registered for each of the at least one group.

Abstract: A DC-DC converter according to an embodiment of the present invention comprises: a switch unit that receives a first DC voltage, separates the first DC voltage into three-phase voltages, and outputs the separated three-phase voltages; a transformation unit that transforms the three-phase voltages output from the switch unit, and outputs a three-phase output voltage; and a rectification unit that rectifies the three-phase output voltage applied from the transformation unit, and outputs a second DC voltage.

Abstract: Provided is an operating method of an advertisement management device, the operating method including: based on log data of a plurality of users collected from a certain game, setting at least one group for the certain game; registering advertisement information to be provided to the at least one group; requesting a plurality of platform servers capable of providing advertisements to provide the advertisement information for each of the at least one group; obtaining, from the plurality of platform servers, feedback information of advertisements provided for each of the at least one group; and based on the feedback information, performing management of the advertisement information registered for each of the at least one group.

Abstract: An apparatus and method is provided for controlling data transmission considering congestion in a wired transmission section in a wireless communication system. To this end, a reception device reports, to a transmission device, status information about a congestion status and flag information indicating occurrence of a new congestion status or maintenance of an existing congestion statue. The transmission device reduces throughput of data being transmitted through the wired transmission section, if it is determined from the flag information reported by the reception device that a new congestion status has occurred or the existing congestion status has been being maintained for a predetermined time. The transmission device requests the reception device to report a congestion status, if the congestion status is not released until a lapse of a predetermined time after occurrence of a new congestion status.

Abstract: A power supply apparatus for LED is provided. The power supply apparatus for LED includes a transformer, a first output unit, and a second output unit. The transformer includes a primary winding, a secondary winding receiving a power induced from the primary winding, and a tertiary winding receiving the power induced from the primary winding. The first output unit is connected to the secondary winding of the transformer, and outputs a first power current to an LED in a first operating condition. The second output unit is connected to the tertiary winding of the transformer, and outputs a second power current to the LED in a second operating condition. When the LED is connected to the power supply apparatus for LED, the power supply apparatus allows a current equal to or less than a predetermined current to flow in the LED, thereby protecting the LED from an overcurrent.

Abstract: A pressure sensitive dicing die bonding film includes a base film, a pressure sensitive adhesive layer formed on the base film, and a bonding layer formed on the pressure sensitive adhesive layer. An adhesive strength between the pressure sensitive adhesive layer and the bonding layer and an adhesive strength between the pressure sensitive adhesive layer and a ring frame may satisfy the following relation: B/A?1.1 where A is the adhesive strength between the pressure sensitive adhesive layer and the bonding layer, and B is the adhesive strength between the pressure sensitive adhesive layer and the ring frame.

Abstract: An apparatus and method is provided for controlling data transmission considering congestion in a wired transmission section in a wireless communication system. To this end, a reception device reports, to a transmission device, status information about a congestion status and flag information indicating occurrence of a new congestion status or maintenance of an existing congestion statue. The transmission device reduces throughput of data being transmitted through the wired transmission section, if it is determined from the flag information reported by the reception device that a new congestion status has occurred or the existing congestion status has been being maintained for a predetermined time. The transmission device requests the reception device to report a congestion status, if the congestion status is not released until a lapse of a predetermined time after occurrence of a new congestion status.

Abstract: A power supply apparatus for LED is provided. The power supply apparatus for LED includes a transformer, a first output unit, and a second output unit. The transformer includes a primary winding, a secondary winding receiving a power induced from the primary winding, and a tertiary winding receiving the power induced from the primary winding. The first output unit is connected to the secondary winding of the transformer, and outputs a first power current to an LED in a first operating condition. The second output unit is connected to the tertiary winding of the transformer, and outputs a second power current to the LED in a second operating condition. When the LED is connected to the power supply apparatus for LED, the power supply apparatus allows a current equal to or less than a predetermined current to flow in the LED, thereby protecting the LED from an overcurrent.

Abstract: A rotary compressor including a housing having first and second compressing chambers separated from each other, first and second flanges coupled to the housing, to close the first and second compressing chambers, respectively, an intermediate plate to separate the first and second compressing chambers from each other, first and second rollers rotatably installed in the first and second compressing chambers, respectively, first and second vanes to reciprocate in a radial direction of the first and second compressing chambers to divide the first and second compressing chambers, respectively, and a vane control device to control the reciprocating movement of the first vane by use of a suction pressure and a discharge pressure, for a variation in compression capacity. A first gap, defined at an end of the first roller, is smaller than a second gap defined at an end of the second roller.

Abstract: A variable capacity rotary compressor capable of reducing collision noise of a vane with a roller. The variable capacity rotary compressor includes a vane controller controlling the operation of a vane in order to vary compression capacity. The vane controller includes a control valve that switches a fluid channel so as to selectively apply discharge pressure and intake pressure to the vane guide slot, a connection channel that connects the control valve with the vane guide slot, a high-pressure channel that connects the control valve with a discharge side of the compressor, and a low-pressure channel that connects the control valve with an intake side of the compressor, and a throttle section that reduces the fluid channel of at least one of the high-pressure channel and the connection channel in order to reduce an initial discharge pressure applied to the vane guide slot.

Abstract: A rotary compressor including a housing having first and second compressing chambers separated from each other, first and second flanges coupled to the housing, to close the first and second compressing chambers, respectively, an intermediate plate to separate the first and second compressing chambers from each other, first and second rollers rotatably installed in the first and second compressing chambers, respectively, first and second vanes to reciprocate in a radial direction of the first and second compressing chambers to divide the first and second compressing chambers, respectively, and a vane control device to control the reciprocating movement of the first vane by use of a suction pressure and a discharge pressure, for a variation in compression capacity. A first gap, defined at an end of the first roller, is smaller than a second gap defined at an end of the second roller.

Abstract: A variable capacity rotary compressor capable of reducing collision noise of a vane with a roller. The variable capacity rotary compressor includes a vane controller controlling the operation of a vane in order to vary compression capacity. The vane controller includes a control valve that switches a fluid channel so as to selectively apply discharge pressure and intake pressure to the vane guide slot, a connection channel that connects the control valve with the vane guide slot, a high-pressure channel that connects the control valve with a discharge side of the compressor, and a low-pressure channel that connects the control valve with an intake side of the compressor, and a throttle section that reduces the fluid channel of at least one of the high-pressure channel and the connection channel in order to reduce an initial discharge pressure applied to the vane guide slot.

Abstract: An air conditioning system including a first compressor and a second compressor provided in parallel with the first compressor to vary compression capacity. The second compressor includes a housing having a compressing chamber, a vane that moves forward and backward in a radial direction of the compressing chamber, a vane guide groove formed in the housing to guide the forward and backward movements of the vane, and a vane controller that controls the operation of the vane in order to vary capacity. The vane controller includes a control valve that switches a fluid path so as to selectively apply suctioning pressure of the second compressor and discharge pressure of the first compressor to the vane guide groove and a controller that controls a fluid path switching operation of the control valve by a pulse width modulation (PWM) method in accordance with air conditioning load.

Abstract: A rotary compressor is provided, including: a rotation shaft; a driving motor which is coupled to a first side of the rotation shaft to supply a rotation force; a rotation cam which is eccentrically provided to a second side of the rotation shaft and supports a rolling piston rotating inside a cylinder which is provided under the driving motor; an upper radial bearing and a lower radial bearing which are provided to an upper part and a lower part of the rolling piston and support the rotation shaft in a radial direction; and an axial supporting part which comprises a first supporting member which is provided between the driving motor and the upper radial bearing, and a second supporting member which is provided between the rotation cam and the lower radial bearing.

Abstract: Methods of forming memory device having protected gate electrodes include the steps of forming protection layers on gate electrodes, word lines and related structures and then using these protected structures as etching and implantation masks to reliably form semiconductor regions in a substrate. In particular, methods of forming integrated circuit memory devices preferably include the steps of patterning a field oxide isolation region at a face of a semiconductor substrate to define an active region therein and then forming a gate electrode of a memory device on the active region. Word lines are also formed on the gate electrode and on the field oxide isolation region. A first protection layer, comprising a material which can preferably be used as a selective etching mask, is also formed on an upper surface of the word line to protect the word line. The field oxide isolation region, which may be a relatively thick silicon dioxide layer, is then preferably etched to expose the face of the substrate.