Abstract: A system for remote wireless charging for an electric vehicle using OOFDMA and Risley prisms is proposed. The system includes a receiver configured to transmit location of the receiver and photovoltaic panel size information as a power request signal through V2I, and a transmitter configured to control power transmission based on the information on the power request signal, control a distance between the prisms according to the location of the receiver and the size of a photovoltaic panel, transmit transmission power information (PowerInfo) for all laser signals to be received by the photovoltaic panel, and rotate the Risley prisms by a predetermined angle, wherein the transmitter, after generating the transmission power information for each wavelength by OOFDM, transmits the signals to areas where the power transmission is available when the prisms are rotated by the predetermined angle, thereby reducing time to find exact locations of the receiver and photovoltaic panel.

Abstract: A lidar sensor device according to an embodiment includes a data generation unit that generates light identification data, an optical modulation unit that generates a plurality of modulated signals for the optical identification data by performing orthogonal frequency division multiplexing (OFDM) modulation on the optical identification data and generates a plurality of laser signals respectively corresponding to the plurality of modulated signals and having different frequencies, and a transmission unit that simultaneously transmits the plurality of laser signals to different measurement points according to the frequencies, respectively.

Abstract: A lidar sensor device according to an embodiment includes a data generation unit that generates light identification data, an optical modulation unit that generates a plurality of modulated signals for the optical identification data by performing orthogonal frequency division multiplexing (OFDM) modulation on the optical identification data and generates a plurality of laser signals respectively corresponding to the plurality of modulated signals and having different frequencies, and a transmission unit that simultaneously transmits the plurality of laser signals to different measurement points according to the frequencies, respectively.

Abstract: An apparatus for measuring a position according to an embodiment includes a light source emitting light to an inner surface of a pipe, a first lens receiving reflected light from which light emitted by the light source is reflected by the inner surface and converting the reflected light into parallel light parallel to an optical axis, a second lens disposed on an optical path of the parallel light and converting the parallel light into a convergent refracted light, an image sensor disposed on an optical path of the refracted light, one or more elastic members disposed between the first lens and the second lens, and a plurality of wheels that are coupled to a side surface of the first lens and are in close contact with the inner surface to be rotated by movement of the moving body.

Abstract: An active notice device according to an embodiment includes a signal receiver configured to receive a signal generated by the active sensor of the surrounding vehicle, a signal analyzer configured to analyze characteristics of the signal received by the signal receiver, an information generator configured to generate information recognizable by the surrounding vehicle according to user setting, a signal generator configured to amplify and generate characteristics of the signal analyzed by the signal analyzer using the information generated by the information generator, and a signal transmitter configured to transmit the signal amplified and generated by the signal generator to an active sensor of the surrounding vehicle corresponding thereto.

Abstract: An apparatus for measuring a position according to an embodiment includes a light source emitting light to an inner surface of a pipe, a first lens receiving reflected light from which light emitted by the light source is reflected by the inner surface and converting the reflected light into parallel light parallel to an optical axis, a second lens disposed on an optical path of the parallel light and converting the parallel light into a convergent refracted light, an image sensor disposed on an optical path of the refracted light, one or more elastic members disposed between the first lens and the second lens, and a plurality of wheels that are coupled to a side surface of the first lens and are in close contact with the inner surface to be rotated by movement of the moving body.

Abstract: The present disclosure is a method to measure the distance between the place where the first image is acquired and the target distance after comparing and analyzing the image acquired through vision sensor with the established database. The database stores images of each section and image information by using the vision sensor. The distance measuring method analyzes the characteristics of the images transmitted by a user and the characteristics of the objects on images, compares them with the database, selects the image most similar to the corresponding image from the database, and calculates the distance to the user.

Abstract: The present disclosure is a method to measure the distance between the place where the first image is acquired and the target distance after comparing and analyzing the image acquired through vision sensor with the established database. The database stores images of each section and image information by using the vision sensor. The distance measuring method analyzes the characteristics of the images transmitted by a user and the characteristics of the objects on images, compares them with the database, selects the image most similar to the corresponding image from the database, and calculates the distance to the user.

Abstract: An optical sheet assembly. A first base film has a first pattern layer disposed thereon. A second base film is disposed on one surface of the first base film and has a second pattern layer disposed on a top surface thereof. The second pattern layer abuts and supports a bottom surface of the first base film. A third base film is disposed on one surface of the second base film and has light-scattering beads being contained therein and recesses formed in one surface thereof bonded to the second base film. The second pattern layer is oriented in the same direction as the first pattern layer. The diameters of the recesses are greater than diameters of entrances thereof. Each of the first pattern layer and the second pattern layer includes a plurality of protrusions and a plurality of recesses defined between the protrusions.

Abstract: A composite sheet includes a matrix impregnated with a fiber base. The fiber base includes first yarns and second yarns, and the second yarns intersect the first yarns at a constant angle. Each of the first and second yarns has an angle of greater than 0° to less than about 180° relative to a first direction of the matrix. A flexible display apparatus includes the composite sheet.

Abstract: Provided is a method and apparatus for generating a magnetic field map using a magnetic field value collected in a sample area. The magnetic field map may be used to verify a user location based on a geomagnetic field.

Abstract: The present invention discloses a method for accessing a cell, and more particularly, to a method for acquiring an initial synchronization using two pilot channels in a CDMA (Code Division Multiple Access) communication system of an asynchronous or quasi-synchronous mode. In accordance with the present invention, a CDMA communication system of an quasi-synchronous mode comprises the steps of synchronizing the mobile station with a cluster pilot, and searching for cell pilots on the basis of the cluster synchronization channel set up by the cluster pilot, and synchronizing the mobile station with the cell pilot having a maximum sensitivity, whereby the mobile station is synchronized with the base station through the cluster pilot and the cell pilot.