RAIL DETECTION APPARATUS AND METHOD FOR AUTONOMOUS DRIVING OF MOBILE ROBOT IN GREENHOUSE ENVIRONMENT

    公开(公告)号:US20250036141A1

    公开(公告)日:2025-01-30

    申请号:US18714082

    申请日:2022-10-24

    Inventor: Su Yong AN

    Abstract: Provided are an apparatus and method for rail detection and control of a motion of a mobile robot for safely switching driving of the mobile robot between a flat area and a rail area in an environment in a greenhouse in which a rail is provided for pipe heating. For more accurate rail detection, accurate three-dimensional (3D) point cloud data is obtained using a tilting laser scanner and is analyzed to detect a position of the rail and control a motion of a mobile robot for rail docking. The apparatus includes a sensor configured to be mounted in a mobile robot, and a rail detection unit configured to obtain 3D point cloud data using the sensor and detect the 3D point cloud data.

    Circuit, apparatus and method for calculating multiplicative inverse

    公开(公告)号:US12212670B2

    公开(公告)日:2025-01-28

    申请号:US17214588

    申请日:2021-03-26

    Abstract: Disclosed herein are an apparatus and method for calculating a multiplicative inverse. The apparatus for calculating a multiplicative inverse includes a data input unit for receiving input data, a multiplicative inverse calculation unit for dividing an input degree-8 finite field corresponding to the input data into two first degree-4 finite fields so as to perform Advanced Encryption Standard (AES) encryption on the input data, and for performing a multiplicative inverse calculation on the first degree-4 finite fields in consideration of a circuit depth value (T-Depth) and qubit consumption of quantum gates in a quantum circuit, and a data output unit for outputting result data obtained by performing the multiplicative inverse calculation.

    Broadcasting signal frame generation apparatus and method using layered divisional multiplexing

    公开(公告)号:US12212642B2

    公开(公告)日:2025-01-28

    申请号:US18450004

    申请日:2023-08-15

    Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information shared by the core layer signal and the enhanced layer signal, using the time-interleaved signal.

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