Abstract: A power factor correction (PFC) circuit switching method can include coupling a PFC circuit and AC power to enable a controller to perform an initial charging operation on an output capacitor to firstly increase an output capacitor voltage, enabling the controller to secondly increase the output capacitor voltage in response to whether the firstly-increased output capacitor voltage reaches a first preset reference voltage, and enabling the controller to switch first and second poles configured in the PFC circuit at different duty ratios in response to whether the secondly-increased output capacitor voltage reaches a second preset reference voltage.

Abstract: A method of recognizing a user's dynamic organ for use in an electric-using apparatus includes scanning a target image inputted through an imaging element using a window; generating a HOG descriptor of a region of the target image that is scanned when it is judged that the scanned region includes a dynamic organ; measuring a resemblance value between the HOG descriptor of the scanned region and a HOG descriptor of a query template for a gesture of the dynamic organ; and judging that the scanned region includes the gesture of the dynamic organ when the resemblance value meets a predetermined condition.

Abstract: Disclosed is a method for extracting a region-of-interest of a user in a multimedia mobile terminal. The method includes: setting a search region in an input picture input to the multimedia mobile terminal on a screen picture-to-screen picture basis, and extracting a group of boundary of a region-of-interest based on a brightness difference between the set search region and an environment around the set search region; determining boundary coordinates of the region-of-interest through learning during a predetermined frame among the extracted group of boundary coordinate candidates; and enlarging the region-of-interest having the determined boundary coordinates, and displaying the enlarged region-of-interest. As a result, a region the user is most interested in or pays more attention to than other regions on a screen is automatically extracted.

Abstract: A method of recognizing a user's dynamic organ for use in an electric-using apparatus includes scanning a target image inputted through an imaging element using a window; generating a HOG descriptor of a region of the target image that is scanned when it is judged that the scanned region includes a dynamic organ; measuring a resemblance value between the HOG descriptor of the scanned region and a HOG descriptor of a query template for a gesture of the dynamic organ; and judging that the scanned region includes the gesture of the dynamic organ when the resemblance value meets a predetermined condition.

Abstract: A composite sheet used for artificial leather with low elongation and excellent softness which includes a non-woven fabric layer, a woven or knitted fabric layer and a polyurethane resin, wherein the non-woven fabric layer and the woven or knitted fabric layer are entangled with each other.

Abstract: A composite sheet used for artificial leather with low elongation and excellent softness which includes a non-woven fabric layer, a woven or knitted fabric layer and a polyurethane resin, wherein the non-woven fabric layer and the woven or knitted fabric layer are entangled with each other.

Abstract: Disclosed is a method for extracting a region-of-interest of a user in a multimedia mobile terminal. The method includes: setting a search region in an input picture input to the multimedia mobile terminal on a screen picture-to-screen picture basis, and extracting a group of boundary of a region-of-interest based on a brightness difference between the set search region and an environment around the set search region; determining boundary coordinates of the region-of-interest through learning during a predetermined frame among the extracted group of boundary coordinate candidates; and enlarging the region-of-interest having the determined boundary coordinates, and displaying the enlarged region-of-interest. As a result, a region the user is most interested in or pays more attention to than other regions on a screen is automatically extracted.

Abstract: The present invention relates to a suede-like artificial leather with excellent strength and elongation properties. The suede-like artificial leather comprises a composite sheet having polyurethane filled therein, the composite sheet comprising: a non-woven fabric of ultrafine short fibers entangled with each other and having a thickness less than 0.3 denier; and a woven or knitted fabric placed in the non-woven fabric, entangled with the ultrafine short fibers of the non-woven fabric, and having an constant load elongation of 10 to 30% at a load of 8 kgf, wherein the tensile strength in longitudinal and lateral directions is 35 to 60 kgf/50 i?ini and the constant load elongation in longitudinal and lateral directions is 8 to 25%. The suede-like artificial leather is useful as materials for vehicles and furniture requiring durability because of its excellent tensile strength and constant load elongation.

Abstract: A composite sheet used for artificial leather with low elongation and excellent softness which includes a non-woven fabric layer, a woven or knitted fabric layer and a polyurethane resin, wherein the non-woven fabric layer and the woven or knitted fabric layer are entangled with each other.

Abstract: The present invention relates to a composite sheet used for artificial leather with low elongation and excellent softness. The composite sheet for artificial leather comprises: a non-woven fabric layer (1) made of ultra fine fibers having a fineness less than 0.3 denier; a woven or knitted fabric layer (2) constructed from a yarn made of ultra fine fibers having a fineness less than 0.3 denier; and polyurethane resin, wherein the ultra fine fibers of the non-woven fabric layer (1) and the ultra fine fibers of the woven or knitted fabric layer (2) are entangled with each other. The composite sheet of the present invention has a stitching strength of more than 30 kg/mm. an elongation at constant load of less than 20% and a stiffness of less than 80 mm. Since the composite sheet for artificial leather of the present invention is excellent in both form-stability and softness, it is useful for the production of artificial leather for furniture, cars, men's clothing and sundry goods.

Abstract: An asynchronous transfer mode (ATM) interface device includes a router/header conversion unit for adding a routing tag to the header of an input cell and converting the cell header into arbitrary virtual path identifier/virtual channel identifier (VPI/VCI), and a cell switching unit for routing the cell received from the router/header conversion unit according to the routing tag. The ATM interface device also includes a second header conversion unit for converting the cell header received from the cell switching unit into the output VPI/VCI corresponding to the arbitrary VPI/VCI, and a demultiplexing unit for transferring the cell from the second header converter to the output physical link corresponding to the output VPI/VCI.