Abstract: According to an embodiment of the present disclosure, a resonant convertor for a power supply device may comprise a synchronous rectifier comprising at least one MOSFET to convert an alternating current into a direct current; a circuit isolation device to receive a state signal from a component included in a first circuit module and to generate a first synchronous rectifier control signal based on the received state signal; a load state detection module to detect a state of a load stage included in a second circuit side and to generate a second synchronous rectifier control signal based on the detected state; and a synchronous rectifier control module to receive the first and the second synchronous rectifier control signals and to control the synchronous rectifier based on at least one of the first and the second synchronous rectifier control signals.

Abstract: A knee joint rehabilitation apparatus for a wheelchair includes a rehabilitation apparatus frame having a height corresponding to a length of each of legs of a patient sitting on the wheelchair; an upper leg support disposed at an upper end of the rehabilitation apparatus frame and supporting upper legs of the patient thereon while the patient is sitting on the wheelchair; a lower leg support pivotably connected to the upper leg support, wherein the lower legs of the patient are seated and supported on the lower leg support; and an exercise control unit disposed on the rehabilitation apparatus frame and configured to allow the lower leg support to pivot around a connection portion between the lower leg support and the upper leg support such that the patient performs rehabilitation exercise of the knee joint thereof while sitting on the wheelchair.

Abstract: The present disclosure relates to a printed circuit board including, a first insulating layer, a first metal layer disposed on the first insulating layer, a bridge disposed on the first metal layer and including a bridge insulating layer and a bridge circuit layer, a second insulating layer disposed on the first insulating layer and covering at least a portion of the bridge, a second metal layer disposed on the second insulating layer, and a connecting via penetrating the bridge and the second insulating layer to connect the first metal layer to the second insulating layer. The connecting via is spaced apart from the bridge circuit layer.

Abstract: Disclosed is an exoskeleton-type rehabilitation robot system, including: a body part provided on a chair in which a user sits and provided with a robot arm capable of moving left or right based on the user seated on the chair; a conversion part configured to convert a position of the robot arm with respect to the body part; a driving part configured to articulate the robot arm with respect to the body part; and a controller configured to detect a change in a position of the robot arm and control a left or right driving mode of the driving part according to the position of the robot arm. In accordance with such a configuration, the exoskeleton-type rehabilitation robot system of the present invention is provided integrally with a chair, thereby having excellent space utilization. In addition, the user's initial preparation for rehabilitation training is simple, which can improve efficiency.

Abstract: A method for generating and managing a 3D coordinate system based on a transmission delay with an O(N) overhead by calculating a transmission delay between large-scale P2P nodes may comprise: generating a coordinate system and setting a node located at an origin of the coordinate system as a block generation node; calculating coordinates of a new node when an additional transmission delay occurs in a process of measuring a transmission delay from the block generation node to another node and requesting coordinates; performing self-cross check in which the block generation node periodically calculates coordinates thereof again; and updating coordinates of nodes comprising the origin of the coordinate system by reflecting a change in a transmission delay between nodes according to a network state change, based on a result of the self-cross check.

Abstract: The present invention relates to an eco-friendly lightweight substrate material for the automotive interior, characterized in that isocyanate or epoxy is added to enhance the function of a substrate material having a sandwich-type structure for the automotive interior including natural fiber that is vulnerable to high temperature and humidity conditions, preventing degradation of physical properties by water-impregnation into the natural fiber and thus enhancing the humidity-resistance and strength of a natural fiber reinforcing layer; and the substrate material is continuously prepared in a thermoplastic foam sheet core layer by thermal-laminating. The substrate material prepared according to the present invention is an eco-friendly material, also is capable of weight lightening by weight reduction, and is excellent in humidity-resistance and strength, thus providing for application to various industries such as train interior, aircraft interior, and architectural interior as well as automotive interior.

Abstract: Provided are a system and method for determining a position based on portable Internet in a portable Internet system. The method includes receiving, by the terminal, information on neighbor base stations (BSs) from a main BS, scanning the neighbor BSs while measuring Received Signal Strength Indicators (RSSIs) for the main BS and the neighbor BSs, determining whether the RSSI for the main BS is greater than a preset threshold value, and deciding, as a position of the terminal, a position associated with an IDentification (ID) of the main BS when the RSSI is greater than the threshold value.

Abstract: Provided are a system and method for determining a position based on portable Internet in a portable Internet system. The method includes receiving, by the terminal, information on neighbor base stations (BSs) from a main BS, scanning the neighbor BSs while measuring Received Signal Strength Indicators (RSSIs) for the main BS and the neighbor BSs, determining whether the RSSI for the main BS is greater than a preset threshold value, and deciding, as a position of the terminal, a position associated with an IDentification (ID) of the main BS when the RSSI is greater than the threshold value.