Abstract:
An apparatus and method for improving a symbol error rate of an M-ary phase shift keying (M-PSK) system having a quadrature error are provided. The apparatus includes: a conversion parameter detector that detects a conversion parameter and converts a symbol decision region using the quadrature error and at least one pair of first received symbols; and a converter & determiner converting a pair of second received symbols using the detected conversion parameter, and determining a transmission symbol according to a symbol of the converted pair of second received symbols. An increase in a symbol error rate due to the quadrature error can be prevented and the quadrature error can be easily estimated.
Abstract:
Provided is a broadcasting system and method for providing a broadcasting service in a weak electric field area. The broadcasting system includes a Digital Multimedia Broadcasting (DMB) terminal for if a broadcasting replay request is input during a DMB service, transmitting a replay request message to a streaming server, and upon receipt of broadcasting data responding to the replay request message is received, displaying the received broadcasting data; and the streaming server for if the replay request message is received, providing broadcasting data responding to the replay request message to the DMB terminal.
Abstract:
The insulated conductive particles of the present invention comprise a resin core 41 having an average particle size of 1 to 10 μm, a Ni layer 42 coated on the surface of the resin core with a thickness of 0.01-0.1 μm, an Au layer 43 coated on the Ni layer with a thickness of 0.03-0.3 μm, and an inorganic insulating layer 44 coated on the Au layer with a thickness of 0.05-1 μm. An anisotropic conductive film of the present invention comprises the insulated conductive particles in the number of 10,000-80,000 per square millimeter (mm2).
Abstract:
The present invention relates to sustained-release preparations prepared by double granulation and methods for producing the same. The sustained-release preparation according to the present invention enables maintenance of effective blood concentration of drug for many hours via sustained release of the drug over 12 hours or more, and further its production is easy owing to convenience of process.
Abstract:
Disclosed is an electrode catalyst comprising: (a) a support with a specific surface area of at least 1200 m2/g; and (b) platinum or platinum-containing alloy particles on the support, wherein the platinum is supported on the electrode catalyst in an amount of 56˜90 wt % based on the total weight of the electrode catalyst. A membrane electrode assembly (MEA) comprising the electrode catalyst and a fuel cell using the MEA are also disclosed. The electrode catalyst comprises platinum or platinum-containing alloy particles highly dispersed on a support with a large surface area in an amount of 56 wt % or more, and thus has an extended catalytically active region, resulting in improvement in the quality of a fuel cell.
Abstract:
A motor has a field magnet assembly comprising a plurality of magnets arranged in the circumferential direction of the field magnet assembly such that like polarities face each other, and a plurality of magnet spacers disposed between the magnets, respectively. Consequently, leakage of magnetic flux of the field magnet assembly is minimized, and torque is improved as compared to a conventional motor having the same stacking and capacity. In a washing machine with the motor, the magnets and the magnet spacers are integrally attached to the outer tub of the washing machine. Consequently, the size of the washing machine is minimized. The sizes of the inner and outer tubs are increased when the washing machine according to the present invention has the same size as the conventional washing machine. Consequently, the capacity of the washing machine is increased.
Abstract:
A rotor of an outer-rotor type motor includes a rotor case made of a metal and provided with a base plate, an insert hole formed in a center portion of the base plate, a shaft bushing, for coupling a rotational axle and the rotor case, fixedly inserted into the insert hole by a insert molding, and a plurality of protruding ribs fixedly connected to the base plate. And the protruding ribs are radially connected to the shaft bushing.
Abstract:
A flux concentration-type motor includes a ring-shaped stator, in which coils are wound on a plurality of teeth radially arranged; and a rotor, located at the center of the stator, having a plurality of magnets arranged in a circumferential direction such that poles, having the same polarity, of the magnets face each other, and rotated by the interaction with the stator, so as to prevent the leakage of magnetic flux of the magnets, thereby improving the torque compared to a conventional surface mounted permanent magnet-type motor having the same volume, reducing the production costs, and facilitating the miniaturization of products.
Abstract:
A hydraulic control system of an automatic transmission includes broadening a control region of the transmission. In the hydraulic control system, a frictional element control pressure, for controlling a frictional element, is changed from a solenoid control pressure to a line pressure corresponding to a change of an open/closed state of a corresponding port of a valve.
Abstract:
A reduced deployment force delivery apparatus having an outer sheath with two layers that move relative to one another so as to reduce the deployment force necessary for deploying a stent, stent graft or other intraluminal device.