Abstract: A warning alarm apparatus for a steering wheel includes at least one piezoelectric transducer provided in the rim of the steering wheel; a current supplier; one or more sensors, equipped in the steering wheel or a motor vehicle, sense a dangerous factor; and a controller that determines whether a sensor value sensed by the sensor is included in a warning alarm range, and controls operation of the current supplier according to the sensor value.

Abstract: A printer nozzle apparatus, including a nozzle that sprays ink, at least one vibration unit that is arranged on one surface of the nozzle and of a ring shape, and a controller that controls a vibration frequency of the vibration unit.

Abstract: Disclosed herein is an alternating current linked power converting apparatus, including: a direct current power unit including a plurality of cells, which provide a direct current (DC) voltage and are connected in series, wherein the direct current power unit has both ends connected to an inverter which converts the direct current voltage to an alternating current (AC) voltage; a cell balancing charger/discharger connected to the plurality of cells and balancing the direct current voltage or an amount of charging between the plurality of cells; and a ripple removing capacitor that is positioned between the cell balancing charger/discharger and the inverter and that includes a first terminal and a second terminal that are respectively connected to a first output terminal and a second output terminal of the cell balancing charger/discharger so as to remove ripples of the direct current voltage.

Abstract: Disclosed is a flyback converter using a coaxial cable transformer which includes: a flyback driving unit that supplies a primary current; a transformer that is formed by winding a cable, which has a plurality of inner conductors as a primary cable and an outer conductor enclosing the inner conductors as a secondary cable, around a magnetic core and by connecting both ends of the primary cable and that receives the primary current and outputs a secondary current in accordance with the turn ratio of the primary cable and the secondary cable; a rectifying diode that rectifies the secondary current; and an output capacitor that smoothes a voltage through the rectifying diode.

Abstract: A mobile device for distinguishing a user's movement, a method therefor, and a method for generating a hierarchical tree model therefor. Particularly, the mobile device includes: an acceleration sensor; a buffer for collecting the acceleration data outputted from the acceleration sensor according to a user's specific movement; an extraction unit for extracting the characteristic elements of the user's specific movement based on the acceleration data collected by the buffer; and a movement judgment unit for determining to which class the user's specific movement belongs by inputting the characteristic elements extracted by the extraction unit into a pre-structured hierarchical tree model, wherein the hierarchical tree model is pre-structured based on the characteristic elements extracted for each movement.

Abstract: Provided is a transmission line transformer having increased signal efficiency. The transmission line transformer is formed on an integrated circuit (IC), wherein a first transmission line disposed in one direction. Second and third transmission lines have same length direction as the first transmission line and are spaced apart from each other in a lateral direction above or below the first transmission line. Accordingly, an area of the first transmission line and areas of the second and third transmission lines, which face each other, are increased, thereby improving a coupling factor. Also, since a secondary transmission line is divided into two regions and uses the second and third transmission lines that have narrower widths than the first transmission line, parasitic capacitance components generated between the first through third transmission lines and a semiconductor substrate may be decreased.

Abstract: Disclosed is an apparatus for tamper protection of an application which includes: an input unit that receives codes to be used for an application; a code separator that separates the inputted codes into sensitive codes requiring application tamper protection and general codes including sensitive method calling routine for calling the sensitive codes by analyzing the input codes; an encoder that encrypts the sensitive codes and inserts the address of an sensitive code connector storing the address information of the sensitive codes; a controller that converts the sensitive method calling routine to be able to call dummy codes by inserting the dummy codes to the general codes, inserts vector table generator, to the sensitive codes, and insert a sensitive method calling routine converter, to the sensitive codes; and a code combiner that creates the application by combining the general codes and the sensitive codes.

Abstract: The present invention relates to a virtual radio map constructing method for Radio-positioning and a device using the same. An exemplary embodiment of the present invention provides a virtual radio map constructing method, including: converting first and second RSS values obtained from two access points adjacent to each of a plurality of access points into first and second RSS values of a linear unit; respectively dividing first and second distances between the access point and the two access points adjacent thereto in an exponential interval, and respectively dividing the first and second RSS values in the exponential interval; generating a plurality of virtual training points by using a plurality of points divided in the exponential interval, and respectively obtaining RSS values of the plurality of virtual training points; and respectively obtaining RSS values of reference points by using RSS values of at least one virtual training points.

Abstract: Disclosed is a differential power amplifier using mode injection, which includes: a first transistor of which the gate receives a first signal and the source is connected to the ground; a second transistor of which the gate receives a second signal and the source is connected to the ground; a third transistor of which the source is connected to the source of the first transistor; a fourth transistor of which the source is connected to the source of the second transistor; a fifth transistor of which the source is connected with the drain of the first transistor and the drain is connected with a first output port and the drain of the third transistor; and a sixth transistor of which the source is connected with the drain of the second transistor and the drain is connected with a second output port and the drain of the fourth transistor.

Abstract: Disclosed is a method for determining an indoor location which includes receiving signals including IDs and information on floors from a plurality of APs that is provided at floors of the multi-story building; measuring reception signal strengths of the received signals, and selecting candidate floors by using the measured reception signal strengths; predicting reception signal strengths of the other candidate floors by using the reception signal strengths of the APs provided at the respective candidate floors; and calculating variance values for the reception signal strengths of the candidate floors, and estimating a current location by using the variance values.

Abstract: A wireless localization method using a fingerprinting technique that performs localization by using a plurality of access points and a plurality of sample points arranged at regular distances, the wireless localization method includes: detecting first through third sample points adjacent to a predetermined node from among the plurality of sample points via the fingerprinting technique; calculating corrected coordinates by using a received signal strength (RSS) between the predetermined node and the first sample point, an RSS value between the predetermined node and the second sample point, an RSS value between the first and second sample points, an RSS value between the first and third sample points, and a distance between the plurality of sample points; and estimating a location of the predetermined node by reflecting the corrected coordinates on coordinates of the first sample point.

Abstract: Disclosed is a combination-type transistor including a first MOSFET that includes a gate, a first source formed on one side of the gate, and a first drain formed on the other side of the gate; a second MOSFET that includes the gate, a second drain formed on the one side of the gate, and a second source formed on the other side of the gate; a first BJT that is formed such that the first source of the first MOSFET is used as an emitter, the second drain of the second MOSFET is used as a collector, and the substrate is used as a base; and a second BJT that is formed such that the second source of the second MOSFET is used as an emitter, the first drain of the first MOSFET is used as a collector, and the substrate is used as a base.

Abstract: A system for detecting an object is provided. The system includes a depth image receiver that receives a depth image from a depth camera; a strong classifier that classifies an object region and a non-object region in the depth image based on a characteristic of an object; and an object detector that detects the classified object region, wherein the strong classifier comprises a plurality of weak classifiers which are cascade connected to each other and classifies the object region and the non-object region by passing the depth image through the weak classifiers, the characteristic of the object is extracted based on a center depth value of the depth image, and the plurality of the weak classifiers are generated through a training process for classifying positive training images among a multiple number of positive training images and a multiple number of negative training images.

Abstract: Disclosed is a linear amplifier which includes: a common source transistor with the gate connected with an input node; a first common gate transistor connected with the common source transistor in a cascode type, with the drain connected with an output node; and a second common gate transistor connected in parallel with the first common gate transistor, with the gate connected with the input node and the drain connected with the output node.

Abstract: Disclosed is a multi-gate transistor which includes a plurality of gates that is branched from one port, that is alternately formed to face each other, and in which currents flow in the adjacent gates in an opposite direction to each other; a source that is formed on one side or the other side of each of the plurality of gates; and a drain that is formed on the other side or the one side of each of the plurality of gates.

Abstract: Disclosure relates to a method of sharing a session key between wireless communication terminals using a variable-length authentication code. The method includes: generating a public key by using an own private key; generating a message including the public key and a first random number and encoding the message using an own secret key to exchange an encrypted message with the other terminal; decoding the encrypted message of the other terminal by receiving a secret key of the other terminal; generating an authentication code by calculating the first random number and a second random number included in the decoded message; obtaining a medium value from the authenticated code; and generating a session key by using a public key included in the decoded message of the other terminal.

Abstract: Provided is a wireless positioning method using a wireless sensor network, for estimating a position of an unknown node that is a positioning target by using a plurality of anchor nodes arranged at regular intervals, the wireless positioning method including: setting a plurality of test nodes at regular intervals on a space formed by some of the plurality of anchor nodes; obtaining a number and position information of anchor nodes within a predetermined distance from the unknown node; detecting at least one test node matching the obtained number and position information; and estimating a position of the unknown node by calculating an average coordinate value of the detected at least one test node.

Abstract: A method of a relay node transmitting data is provided. The method includes receiving scheduling information about a backhaul link and data from a base station; receiving channel information about an access link from relay node user equipment; performing scheduling on the access link based on the scheduling information about the backhaul link and the channel information about the access link; and relaying the data to the relay node user equipment according to a result of the scheduling. The backhaul link means a link between the base station and the relay node, and the access link means a link between the relay node and the relay node user equipment.

Abstract: Provided are method and apparatus for authenticating a password of a user terminal. The method includes: pre-setting, by a user, a password and an identification image for identifying the password; moving a keypad window or an image window realized on a screen of the user terminal according to an action of the user; determining, when a plurality of images included in the image window and a plurality of keys included in the keypad window sequentially overlap with each other, whether a plurality of keys and the identification image corresponding to the password sequentially overlap; and authenticating the password when the plurality of keys and the identification image corresponding to the password sequentially overlap. Accordingly, password information may be protected from a third person observation as the user inputs a pre-set password in an indirect method without having to directly input the pre-set password through an authentication interface.

Abstract: Disclosed is a method for determining an indoor location which includes receiving signals including IDs and information on floors from a plurality of APs that is provided at floors of the multi-story building; measuring reception signal strengths of the received signals, and selecting candidate floors by using the measured reception signal strengths; predicting reception signal strengths of the other candidate floors by using the reception signal strengths of the APs provided at the respective candidate floors; and calculating variance values for the reception signal strengths of the candidate floors, and estimating a current location by using the variance values.