Abstract: Provided are an audio processing apparatus and a method for providing audio thereof, and an audio receiver and a method of providing audio thereof. The audio processing apparatus includes: a location detecting unit which detects a location of an audio receiver; a sound adjusting unit which adjusts a sound of an audio signal according to the detected location; and an audio signal transmitting unit which transmits the audio signal with the adjusted sound to the audio receiver.

Abstract: The present invention relates to an LED assembly and products using the same. More specifically, the present invention relates to an LED assembly having improved discernibility from the far distance and near distance and from the front and sides, which is covered with a light-passing unit having a thin-film light-passing part and a thick-film light-passing part such that scattering of light is prevented and in which the light irradiation range is specified by the size of the light-passing unit such that light can penetrate far from the thin-film light-passing part but, even so, glare directly in front of the front surface of the LED is softened and, because the medium in the thick-film light-passing part is thick, some of the light passing through the medium is reflected on the inside and the light can also reach the side surfaces. The present invention also relates to signboards and traffic safety display boards using the LED assembly.

Abstract: The present invention relates to a safety vest, and more specifically, to a safety vest which has an LED, a light emitting device, adhered thereto, wherein the LED is covered with a light transmitting unit comprising a thin film light transmitting portion and a thick film light transmitting portion to protect the LED from external shock and to allow the vest to be recognized by other people by improving visibility from both long and short distances and also from the front and the sides, and a buoyancy generation means is provided to allow the vest to play a role as a life vest in water without a decrease in the worker's work ability.

Abstract: The present invention relates to an LED assembly and a banner using the same. In particular, the present invention relates to an LED assembly, an attaching method of the same, and a banner using the same to prevent light from scattering by covering an LED with a light-permeable part which comprises light-permeable thin and thick films and to limit light emission range to the size of the light-permeable part, wherein the light-permeable thin film transmits light a long distance and also releases intense light directly in front of the front side of the LED, and the light-permeable thick film transmits the light laterally by reflecting a part of the light, which passes through a medium, inside, because the medium is thick, thereby improving shapability and visibility from a long distance to a short distance.

Abstract: The present invention relates to an LED with an adsorption plate attached thereto, and more particularly, to an LED which is covered with a light transmitter made of a light-transmitting material to prevent light scattering and to restrict the light radiation range to the size of the light transmitter. The light transmitter has a thin film light-transmitting portion and a thick film light-transmitting portion to improve visibility at a short distance and at a long distance, and from the front and the side. Further, a user may freely combine LEDs with adsorption plates attached thereto to express words or sentences for advertisements, and may also easily change the words or sentences.

Abstract: Provided is a storage system using a high speed storage device as a cache. The storage system includes a large-volume of first storage device, a high speed second storage device, and a Random Access Memory (RAM). The large-volume of first storage device corresponds to a Hard Disk Drive (HDD), and the high speed second storage device corresponds to a Solid State Drive (SSD). Also, the high speed second drive is used as a cache. The first storage device manages content files super block by super block, and the second storage device manages cache files block by block.

Abstract: A security method and a security apparatus are disclosed which use a self-generated encryption key. The security method includes the steps of: generating an encryption key; decrypting pre-encrypted data using a pre-stored manufacturer key; and re-encrypting the decrypted data using the encryption key. The security method and apparatus minimize external leakage of data by self-generating the unique encryption key. Since the encryption keys are unique in each set, set binding is possible.

Abstract: An audio and video synchronization compensation method and apparatus for smoothly compensating audio and video synchronization in an audio and video system such as a DTV and a DVD player are provided. The apparatus includes a signal decoder unit which extracts time information for reproducing a video and/or audio signal and reference operation time information of a reproduction system from an input compressed stream; a signal synchronization control unit which determines the reproduction state of a signal by comparing reproduction time information of the stream with reference time information of the system, measures the difference between the reproduction time information and the reference time information in the determined signal reproduction state, and adjusts a transition speed used to approach from a signal reproduction interval to a signal synchronization interval according to a reproduction speed value of a pattern corresponding to the difference.

Abstract: An audio system apparatus and method for processing multi-channel audio data are provided. In the audio system, information indicating a correspondence relation between the channels of the multi-channel audio data and speakers installed in an arbitrary space is generated based on selection by a user, and according to the generated information, the channels of the multi-channel audio data are rearranged. By doing so, terminals of the output panel of the audio system and speakers can be connected arbitrarily according to convenience of a user and channels of multi-channel audio data can be set appropriately to the connection status.

Abstract: A cyclone dust collector and a vacuum cleaner having the same. The cyclone dust collector has a cyclone body shaped to have a relatively wider upper portion and a relatively narrower lower portion and also has a suction port and a discharge port, a grill member connected to the discharge port, a dust receptacle connected to the cyclone body, and a blocking member for partially blocking the grill member. Air drawn in through the suction port moves in an increasingly wider radial path as it travels upwardly to the discharge port, increasing the centrifugal force on suspended particles as they travel toward the discharge port. The shape of the cyclone body prevents turbulent flow from being generated. Dust is prevented by the blocking member from attaching to the grill member before being centrifuged, performance of the grill member is enhanced.

Abstract: Disclosed is a method for detecting a fault by using harmonics and a state transition diagram. When the fault occurs on transmission lines, the fault is detected by using harmonics and the state transition diagram. Two logic signals are outputted by using apparent impedance of a steady state characteristic and a sum of harmonics components of a transient state characteristic. Such two logic signals are used as input parameters of the state transition diagram so that the state of an electric power system is presumed based on a state transition of the electric power system. It is possible to prevent a distance relay from being malfunctioned under an increase of load and unstable voltage. The state of the electric power system is presumed by using harmonics and the state transition diagram, and the fault on the transmission line is reliably detected.

Abstract: Disclosed is a method for detecting a fault by using harmonics and a state transition diagram. When the fault occurs on transmission lines, the fault is detected by using harmonics and the state transition diagram. Two logic signals are outputted by using apparent impedance of a steady state characteristic and a sum of harmonics components of a transient state characteristic. Such two logic signals are used as input parameters of the state transition diagram so that the state of an electric power system is presumed based on a state transition of the electric power system. It is possible to prevent a distance relay from being malfunctioned under an increase of load and unstable voltage. The state of the electric power system is presumed by using harmonics and the state transition diagram, and the fault on the transmission line is reliably detected.