Abstract: Provided is a discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM) transmission method and transmitter including a phase shifter configured to generate a pi/2-binary phase shift keying (BPSK) symbol vector by phase-shifting a vector including M BPSK symbols, a DFT spreader configured to generate a DFT-spread pi/2-BPSK symbol vector by spreading the pi/2-BPSK symbol vector using an M-point DFT matrix, a circular extender configured to generate a circularly extended pi/2-BPSK symbol vector by periodically extending the DFT-spread pi/2-BPSK symbol vector, a frequency domain spectrum shaper configured to generate a frequency domain spectrum shaped pi/2-BPSK symbol vector by multiplying each element of the circularly extended pi/2-BPSK symbol vector by each element of a first shaping vector, and a subcarrier allocator configured to allocate the frequency domain spectrum shaped pi/2-BPSK symbol vector to subcarriers in an allocated frequency range.

Abstract: A vehicle to building (V2B) charge/discharge scheduling method can include inputting input data including at least one of electric vehicle information related to battery charging and discharging of electric vehicles, building information related to power use of a building, and electric vehicle supply equipment (EVSE) information related to EVSEs connected to the electric vehicles and charging and discharging a battery; setting a scheduling model using the input data and an objective function; outputting optimization data using the scheduling model; and performing charge/discharge scheduling of the electric vehicles using the optimization data, wherein the setting a scheduling model includes setting the scheduling model using mixed-integer linear programming (MILP) if a number of electric vehicles is not greater than a number of EVSEs; and setting the scheduling model using mixed-integer quadratic programming (MIQP) if the number of electric vehicles is greater than the number of EVSEs.

Abstract: An electric vehicle charging and discharging scheduling method can include setting a scheduling model based on a constraint function and an objective function considering a contract for difference, smart charging, a plus demand response (DR), and a national DR, optimizing the set scheduling model, and performing electric vehicle charging and discharging scheduling using the optimized scheduling model. The constraint function can include a function for at least one of restrictions on charging/discharging for each electric vehicle. The objective function can include a regular scheduling function considering the contract for difference and the plus DR market, and an irregular scheduling function considering the contract for difference, the plus DR market, and a national DR market.

Abstract: Provided is a discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM) transmission method and transmitter including a phase shifter configured to generate a pi/2-binary phase shift keying (BPSK) symbol vector by phase-shifting a vector including M BPSK symbols, a DFT spreader configured to generate a DFT-spread pi/2-BPSK symbol vector by spreading the pi/2-BPSK symbol vector using an M-point DFT matrix, a circular extender configured to generate a circularly extended pi/2-BPSK symbol vector by periodically extending the DFT-spread pi/2-BPSK symbol vector, a frequency domain spectrum shaper configured to generate a frequency domain spectrum shaped pi/2-BPSK symbol vector by multiplying each element of the circularly extended pi/2-BPSK symbol vector by each element of a first shaping vector, and a subcarrier allocator configured to allocate the frequency domain spectrum shaped pi/2-BPSK symbol vector to subcarriers in an allocated frequency range.

Abstract: Disclosed are a device and method for measuring an organic light emitting diode, which measures an amount of energy for compensating for a burn-in of an organic light emitting diode, by sensing a charged voltage of a sensing line connected to the organic light emitting diode. The device for measuring an organic light emitting diode includes an external current source, and is configured to measure an amount of energy for compensating for a burn-in, by sensing a charged voltage of a parasitic capacitor of a sensing line.

Abstract: A driver of a display device is disclosed. In order to solve a signal processing error likely to occur in an analog-digital converter which processes a pixel sensing signal provided from a pixel of a display panel, the pixel sensing signal is converted, or an input range of the analog-digital converter is corrected.

Abstract: A source driver integrated circuit of the present invention comprises: a sensing circuit for receiving a sensing signal for pixels through a sensing line connected to the pixels, converting the sensing signal so as to generate sensing data, and generating a fault signal if an abnormal signal that exceeds an input range is received from the sensing line; and a data driving circuit for receiving, from the data processing circuit, image data which is processed to be compensated according to the sensing data and a data control signal in which the fault signal is reflected, converting the image data so as to generate data voltage, and controlling supply of the data voltage to the pixels according to the data control signal.

Abstract: A driver of a display device is disclosed. In order to solve a signal processing error likely to occur in an analog-digital converter which processes a pixel sensing signal provided from a pixel of a display panel, the pixel sensing signal is converted, or an input range of the analog-digital converter is corrected.

Abstract: A source driver integrated circuit of the present invention comprises: a sensing circuit for receiving a sensing signal for pixels through a sensing line connected to the pixels, converting the sensing signal so as to generate sensing data, and generating a fault signal if an abnormal signal that exceeds an input range is received from the sensing line; and a data driving circuit for receiving, from the data processing circuit, image data which is processed to be compensated according to the sensing data and a data control signal in which the fault signal is reflected, converting the image data so as to generate data voltage, and controlling supply of the data voltage to the pixels according to the data control signal.

Abstract: Disclosed are a device and method for measuring an organic light emitting diode, which measures an amount of energy for compensating for a burn-in of an organic light emitting diode, by sensing a charged voltage of a sensing line connected to the organic light emitting diode. The device for measuring an organic light emitting diode includes an external current source, and is configured to measure an amount of energy for compensating for a burn-in, by sensing a charged voltage of a parasitic capacitor of a sensing line.

Abstract: Disclosed is a device for reducing deterioration of image quality which can get rid of speckle by equalizing a laser from a light source on a screen by vibrating a reflective mirror installed between the light source and the screen at a predetermined amplitude. The device for reducing deterioration of image quality in a display system using a laser as a light source includes: a reflective mirror formed at the path of light positioned between the light source and a screen, for reflecting the laser; and a driving unit connected to the reflective mirror and vibrating the reflective mirror at a predetermined amplitude by using an electromagnetic force.

Abstract: A flow control valve apparatus using a flow control valve manufactured via micro-machining is provided. The flow control valve has a substrate defining at least one orifice through which a fluid can flow, a support member formed on a first surface of the substrate, at least one flap corresponding to the at least one orifice, a pair of elastic flexures connecting the support member to the at least one flap, and a driving means for displacing the at least one flap between the first and second positions to control fluid flow through the at least one orifice. The support member is formed adjacent to the at least one orifice and the at least one flap extends from the support member to fittingly engage the at least one orifice in a first and second position. Also, the pair of elastic flexures provides an elastic restorative force proportional to a displacement of the at least one flap between the first and second positions.

Abstract: A scheduling apparatus and method are capable of maximizing efficiency of trunk line usage and preventing queue congestion when a trunk line is used in a mobile communication system. A variable bandwidth management service for allocating more bandwidth to a queue with greater traffic is provided so that allocation of bandwidth can be made flexibly. A scheduler calculates actually provided class information and performs scheduling according to a current scheduling ratio, thereby preventing congestion of a specific queue.

Abstract: Disclosed is a device for reducing deterioration of image quality which can get rid of speckle by equalizing a laser from a light source on a screen by vibrating a reflective mirror installed between the light source and the screen at a predetermined amplitude. The device for reducing deterioration of image quality in a display system using a laser as a light source includes: a reflective mirror formed at the path of light positioned between the light source and a screen, for reflecting the laser; and a driving unit connected to the reflective mirror and vibrating the reflective mirror at a predetermined amplitude by using an electromagnetic force.

Abstract: Efficient ATM (Asynchronous Transfer Mode) cell switching operations for establishing routing paths for ATM cells in an ATM-based network is achieved by using a newly created field indicating an end destination that is added to the front of an ATM cell header. Network delays and processing loads due to unnecessary ATM cell switching operations are reduced, and waste of VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) resources is prevented. Such techniques may be applied to a network board requiring frequent ATM cell switching in an ATM-based mobile communication system.

Abstract: A system and method for managing traffic in a communication system assigns multiple links in a system to a queue. The queue is formed from one or multiple memories and a queue assignment unit assigns banks in the queue to one or more links. The queue assignment also writes data in the banks of specific links through a write control signal. A signal detection unit detects availability of a line interface unit, and a data control unit that reads data from the queue and writes it in the line interface unit. Through this structure, a faster and more efficient data transmission system is formed.