Abstract: Disclosed are a MIMO communication system and a method of controlling the same.

Abstract: An isolated flyback converter for an LED driver includes a snubber circuit unit connected to the primary side of a transformer; and a snubber voltage detection unit which detects a snubber voltage of the snubber circuit unit and generates a reference voltage proportional to the detected snubber voltage. Further, the isolated flyback converter includes a switching unit with a source terminal and a drain terminal, and may be turned on or off in response to an arbitrary logic signal. Furthermore, the isolated flyback converter includes a control unit which compares a voltage supplied through the switching current sensing resistor with the reference voltage, and supplies a logic signal at relatively high level or relatively low level to the switching unit to control the switching unit such that a secondary-side current of the transformer is maintained relatively constant.

Abstract: A memory device includes a nonvolatile memory, operated by using a plurality of voltages and configured to output stored repair information in response to a boot-up signal, a plurality of registers configured to store the repair information output from the nonvolatile memory, a plurality of memory banks configured to replace a normal cell with a redundancy cell using the repair information stored in registers corresponding to the plurality of memory banks among the plurality of registers, and a boot-up control circuit configured to activate the boot-up signal at a time of stabilization of the plurality of voltages.

Abstract: [Summary] The present invention relates to a touch panel. The present touch panel has a shape that comprises a plastic substrate film and a pressure sensitive adhesive layer attached to said substrate film. Here, a phenomenon of penetrating oxygen, moisture or other foreign materials into an interface between said substrate film and said pressure sensitive adhesive layer is prevented, and decrease of optical properties by bubble generation due to the out-gassing phenomenon in the plastic substrate film is prevented. In addition, even if the pressure sensitive adhesive layer is directly attached to the conductive thin film, and it is exposed to a severe condition such as high temperature or high temperature and high humidity condition as such a state, change of resistance in the conductive thin film is effectively inhibited. Therefore, the present touch panel may be stably driven for a long time.

Abstract: There is provided a light emitting diode driving apparatus capable of supplying a constant average current to a light emitting diode by generating a reference voltage used for driving the light emitting diode according to input power and a switching signal switching a path of a current supplied to the light emitting diode. The light emitting diode driving apparatus includes: a reference voltage generating unit generating a reference voltage set based on input power and a switching signal for supplying driving power to a light emitting diode; and a driving unit supplying the driving power to the light emitting diode according to the reference voltage.

Abstract: A shift circuit of a semiconductor device reduces the power consumption of the semiconductor device. The shift circuit comprises a plurality of shifters and a plurality of clock controllers. The plurality of shifters shifts an input signal in sequence in response to a clock. The plurality of clock each supply the clock to a corresponding shifter before an input of the corresponding shifter is activated and stop the supply of the clock to the corresponding shifter when an output of the corresponding shifter is activated.

Abstract: A swelling tape for filling a gap and a method of filling a gap are provided. The swelling tape can be applied within the gap having a fluid to realize a 3D shape thereby filling the gap, and be used to fix a subject forming the gap as necessary.

Abstract: The apparatus for dynamic update of a software-based IPTV conditional access system includes: a server master key manager managing a master key and encrypting a conditional access code ID; a conditional access server manager generating and managing a server list, linking and storing an update policy with the conditional access server IDs included in the server list, and controlling execution of the conditional access server; and a conditional access code download server generating an ID map of set of conditional access codes by combining the plurality of conditional access codes and the plurality of conditional access code IDs that are encrypted, and transmitting the ID map of set of conditional access codes and the conditional access code to a receiver.

Abstract: A technology for inter-cell interference control is provided. In one general aspect, the inter-cell interference may be controlled by resource allocation scheduling or power management. A cell may be divided into a plurality of regions. A constant available resource band and a selectively available band are allocated to each region. Each of the allocated resource bands is assigned with an interference characteristic. The resource allocation scheduling and the power management are performed according to the resources allocated to the respective regions and the interference characteristics assigned to the respective resources.

Abstract: A vacuum cleaner includes a dust collector that compresses dust stored inside a dust container to minimize the volume of the dust. The dust collector would include one or more pressing plates that are used to compress the dust stored in dust collector. Various methods are used to control movements of the movable pressing plates to facilitate the compression operations. Also, various methods are used to determine when the dust collector is full and needs to be emptied.

Abstract: Provided are a method for preparing grapheme from an organic material using a radiation technique, and graphene prepared using the same, and more particularly, a method of preparing graphene by dissolving an organic material such as polymer, oligomer, or the like, in a solvent to prepare an organic material solution, applying the prepared solution to an upper portion of a substrate to form an organic thin film, introducing a cross-link structure into the organic thin film through irradiation with radiation, and then performing a carbonization process, and graphene prepared using the same. With a method of preparing graphene from an organic material using a radiation technique, and graphene prepared using the same according to the present invention, expensive metal catalyst and substrate, oxidation and reduction processes, and a delicate process control may not be required as compared to the existing method.

Abstract: An electrostatic spray printing apparatus includes a nozzle, a first voltage supply, and two guide electrodes. The nozzle sprays a solution containing an organic material. The first voltage supply divides the solution sprayed from the nozzle into fine droplets by applying a positive voltage to the nozzle. The guide electrodes are arranged to be spaced apart from each other with an end of the nozzle therebetween, extends in a first direction, and are grounded. The electrostatic spray printing apparatus forms an organic pattern with a uniform thickness.

Abstract: A semiconductor memory apparatus may include a bonding pad; a control signal pad; and an operation mode signal generation unit configured to generate a plurality of operation mode signals in response to a bonding signal inputted through the bonding pad and a control signal inputted through the control signal pad.

Abstract: Provided are a pressure-sensitive adhesive composition for a touch panel, a conductive film, a touch panel and a pressure-sensitive adhesive film. The exemplary pressure-sensitive adhesive composition for a touch panel, the conductive film or the pressure-sensitive adhesive film has excellent durability and optical properties such as transparency. In addition, such physical properties are stably maintained under severe conditions. Particularly, a pressure-sensitive adhesive layer is attached to a conductor thin film, and thus resistance change of the conductor thin film is effectively inhibited even when the conductor thin film is exposed to the severe conditions. Therefore, the pressure-sensitive adhesive composition may be effectively used to manufacture a touch panel.

Abstract: Provided are a pressure-sensitive adhesive composition for a touch panel, a conductive film, a touch panel and a pressure-sensitive adhesive film. The exemplary pressure-sensitive adhesive composition for a touch panel, the conductive film or the pressure-sensitive adhesive film has excellent durability and optical properties such as transparency. In addition, such physical properties are stably maintained under severe conditions. Particularly, a pressure-sensitive adhesive layer is attached to a conductor thin film, and thus resistance change of the conductor thin film is effectively inhibited even when the conductor thin film is exposed to the severe conditions. Therefore, the pressure-sensitive adhesive composition may be effectively used to manufacture a touch panel.

Abstract: A method of testing a semiconductor memory device comprises receiving a clock, addresses, commands, and data from a test device through channels, generating an internal bank address in response to the addresses and the commands, performing a multi-bit parallel test for each of a plurality of banks based on the addresses, the commands, the data, and the internal bank address, and providing the test device with a test result signal.

Abstract: A driver circuit is configured to drive light-emitting elements. The driver circuit includes a light-emitting element, a power switching element, a control circuit, and a charge pump circuit. The power switching element includes a first terminal connected to the light-emitting element and turns on and off the light-emitting element. The control circuit is connected to a second terminal of the power switching element and controls a switching operation of the power switching element. The charge pump circuit is connected between the control circuit and a power source for the light-emitting element and supplies current to the control circuit for driving the control circuit.

Abstract: A method and apparatus for calculating energy revenues of electric power devices based on real time pricing is provided. The energy revenue calculating apparatus may synchronize time between the energy revenue calculating apparatus and at least one of a real time energy pricing information providing server and a time information providing server, based on time information received from at least one of the real time energy pricing information providing server and the time information providing server, synchronize an energy sale price stored in the energy revenue calculating apparatus with an energy sale price, based on energy sale price information received from the real time energy pricing information providing server, and calculate energy revenues for a predetermined time period, based on the received energy sale price information and information about an amount of energy that flows into and out of the plurality of electric power devices.

Abstract: Provided is an apparatus and method for performing time synchronization based automated power trading for a real time pricing system. The power trading apparatus may include a time synchronizing unit to synchronize at least one of a power market server, a smart meter, and a time information to provide the power market server with time, a power purchasing and selling price monitoring unit to receive power purchasing and selling price information from the power market server to monitor power purchasing and selling prices that change in real time and to compare the power purchasing and selling prices to predetermined reference prices for power trading, and an inverter and power storage apparatus controller to controlling power conversion of an inverter, and charging and discharging of a power storage apparatus to purchase and sell power at the reference prices.

Abstract: Radio protocol for a next generation mobile communication system is disclosed including a radio link control layer for connecting to an upper layer through a service access point provided in advance and for connecting to a lower layer through a plurality of logic channels provided in advance The radio link control layer includes at least one radio link control entity for transmission/reception of data to/from up-link or down-link according to a form of a data transmission mode.