Abstract: A method and apparatus of accessing a channel in a wireless local area network is provided. A destination station receives a request to send (RTS) frame to allocate a network allocation vector from a source station over a first bandwidth and transmits a clear to send (CTS) frame over a second bandwidth to the source station in response to the RTS frame. The second bandwidth is dynamically determined when a first parameter has a predetermined value.

Abstract: Provided is a defect analysis device which may include a light source that irradiates an analysis target layer of an element with light, a position adjuster that adjusts a position in the analysis target in the analysis target to be irradiated with the light, a detector that measures a current value of current flowing between a source area of the element electrically connected to one end of the analysis target layer and a drain area of the element electrically connected to the other end of the analysis target layer in the element, and an analyzer that acquires quantitative data related to a defect in the analysis target layer on the basis of the current value in which, in a first mode, a plurality of areas of the analysis target layer are sequentially irradiated with the light.

Abstract: An auxiliary mat for a hyperthermo-therapeutic apparatus, a hyperthermo-therapeutic apparatus including the same, and a method of using the hyperthermo-therapeutic apparatus are provided. In a hyperthermo-therapeutic apparatus including a main mat and an auxiliary mat, a receiving groove is formed at a side of the main mat or the auxiliary mat, and an external hyperthermo-therapeutic unit is detachably mounted in the receiving groove. In a state where a user sits astraddle on the main mat or the auxiliary mat, the external hyperthermo-therapeutic unit is operated so that a hot compress effect or an effect generated by radiating far infrared rays can be simply obtained on a lower part of a user's body. Upon use of the hyperthermo-therapeutic apparatus, there are advantages in that the user does not need to take an uncomfortable posture for receiving a hot compress on the lower part of her/his body.

Abstract: The present invention is to provide a chain stabilizing device which can fundamentally solve the phenomenon of extension of a chain during use of a hyperthermo-therapeutic apparatus and allow use of existing curved rails conforming to the shape of a user's body. The present invention is to provide an apparatus for stabilizing a chain in a hyperthermo-therapeutic apparatus, comprising a chain stabilization control unit for stably moving the chain at a constant level regardless of an upward/downward movement of a hyperthermo-therapeutic unit of the hyperthermo-therapeutic apparatus during forward/backward reciprocation of the hyperthermo-therapeutic unit; and a chain-tension control unit for adjusting a tension on the chain, which can be generated during the forward and backward reciprocation of the hyperthermo-therapeutic unit.

Abstract: The present invention relates to a chain stabilizing device in a hyperthermo-therapeutic apparatus and a method of using the same. Instead of a conventional feeding means with a complicated structure, the present invention comprises a first hinge shaft with a simple structure, level control rods each of which has one end hingedly coupled to the first hinge shaft and the other hingedly coupled end, a second hinge shaft to which the other ends of the level control rods are hingedly coupled, and a hyperthermo-therapeutic unit support hingedly coupled to the second hinge shaft. At this time, the first hinge shaft has rollers installed at both side ends thereof and engaged with linear rails, while the hyperthermo-therapeutic unit support has rollers provided at both side ends thereof and rotatably engaged with curved rails.

Abstract: The present invention relates to an auxiliary mat for a hyperthermo-therapeutic apparatus, a hyperthermo-therapeutic apparatus comprising the same, and a method of using the hyperthermo-therapeutic apparatus. In a hyperthermo-therapeutic apparatus including a main mat and an auxiliary mat according to the present invention, a receiving groove is formed at a side of the main mat or the auxiliary mat, and an external hyperthermo-therapeutic unit is detachably mounted in the receiving groove. In a state where a user sits astraddle on the main mat or the auxiliary mat, the external hyperthermo-therapeutic unit is operated so that a hot compress effect or an effect generated by radiating far infrared rays can be simply obtained on a lower part of a user's body Upon use of the hyperthermo-therapeutic apparatus of the present invention, there are advantages in that the user does not need to take an uncomfortable posture for receiving a hot compress on the lower part of her/his body.