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    Heterogeneously integrated photonic circuit and method for manufacturing the circuit
    291.
    发明授权
    Heterogeneously integrated photonic circuit and method for manufacturing the circuit 有权

    公开(公告)号：US11169327B2

    公开(公告)日：2021-11-09

    申请号：US16984808

    申请日：2020-08-04

    Applicant: Korea Advanced Institute of Science and Technology

    Inventor： Kyoungsik Yu ,  Youngho Jung

    IPC: G02B6/132 ,  H01L21/50 ,  G02B6/12 ,  G02B6/122

    Abstract: The method for manufacturing the heterojunction circuit according to one embodiment of the present disclosure comprises depositing a first electrode on at least a part of a waveguide, moving a semiconductor comprising a second electrode at a lower end thereof onto the first electrode, and depositing a third electrode on an upper end of the semiconductor, wherein the waveguide and the semiconductor comprise different materials. Additionally, the moving step further comprises generating microbubbles by supplying heat to at least a part of the semiconductor, moving the semiconductor on the first electrode by moving the generated microbubbles, and removing the microbubbles by positioning the semiconductor on the first electrode.

    ELECTRONIC DEVICE FOR PREDICTION USING RECURSIVE STRUCTURE AND OPERATING METHOD THEREOF
    296.
    发明申请
    ELECTRONIC DEVICE FOR PREDICTION USING RECURSIVE STRUCTURE AND OPERATING METHOD THEREOF 有权

    公开(公告)号：US20210316762A1

    公开(公告)日：2021-10-14

    申请号：US17121829

    申请日：2020-12-15

    Applicant: Korea Advanced Institute of Science and Technology

    Inventor： Dongsuk KUM ,  Sanmin KIM

    IPC: B60W60/00 ,  G06T7/20 ,  G06N3/04 ,  G05B13/02

    Abstract: An electronic device and an operating method thereof may be configured to detect input data having a first time interval, detect first prediction data having a second time interval based on the input data using a preset recursive network, and detect second prediction data having a third time interval based on the input data and the first prediction data using the recursive network. The recursive network may include an encoder configured to detect each of a plurality of feature vectors based on at least one of the input data or the first prediction data, an attention module configured to calculate each of pieces of importance of the feature vectors by calculating the importance of each feature vector, and a decoder configured to output at least one of the first prediction data or the second prediction data using the feature vectors based on the pieces of importance.

    ANALOG-DIGITAL CONVERTER AND SEMICONDUCTOR MEMORY DEVICE HAVING THE SAME
    298.
    发明申请
    ANALOG-DIGITAL CONVERTER AND SEMICONDUCTOR MEMORY DEVICE HAVING THE SAME 有权

    公开(公告)号：US20210305994A1

    公开(公告)日：2021-09-30

    申请号：US17011115

    申请日：2020-09-03

    Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Kyoungho KIM ,  Dongryeol OH ,  Seungtak RYU

    IPC: H03M1/20 ,  H03M1/12 ,  G11C7/16 ,  G11C11/408

    Abstract: An analog-digital converter includes a first analog-digital conversion unit configured to, during a first analog-digital conversion operation, sequentially charge each of n first differential node pairs, in response to a respective one of a differential sampling signal pair and first to (n−1)th differential signal pairs among n differential signal pairs, in response to each of the n first differential node pairs being sequentially charged, sequentially generate each of n first differential data pairs, and sequentially generate each of n upper differential data pairs to be used as n-bit upper digital data, in response to a respective one of the sequentially-generated n first differential data pairs. The first analog-digital conversion unit is further configured to, during a second analog-digital conversion operation, simultaneously discharge each of the n first differential node pairs, in response to a nth differential signal pair among the n differential signal pairs.

    SILICON-OPA-BASED LIDAR FOR MEASURING DISTANCE USING QUASI-FREQUENCY MODULATION
    300.
    发明申请
    SILICON-OPA-BASED LIDAR FOR MEASURING DISTANCE USING QUASI-FREQUENCY MODULATION 有权

    公开(公告)号：US20210302577A1

    公开(公告)日：2021-09-30

    申请号：US16839277

    申请日：2020-04-03

    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

    Inventor： Hyo-Hoon PARK ,  Hyeonho YOON ,  Nam-Hyun KWON ,  Kyeongjin HAN ,  Hyun-Woo RHEE ,  Geum-Bong KANG

    IPC: G01S17/32 ,  G01S7/481 ,  G01S7/4913

    Abstract: A silicon phased array based LiDAR device that measures a distance using a quasi-frequency modulation is disclosed. A LiDAR device according to an exemplary embodiment of the inventive concept includes a light source that generates an optical signal, an optical modulator that generates a first optical signal having a quasi-frequency whose a modulation frequency constantly varies with time by modulating a light intensity of the optical signal, an optical splitter that splits optical power of the first optical signal into a reference optical signal and a transmit (Tx) optical signal, an optical transmitter that receives and emits the Tx optical signal toward an object, an optical receiver that receives a receive (Rx) optical signal reflected from the object and transfers the Rx optical signal, an optical coupler that mixes the reference optical signal and the Rx optical signal, a balanced photodetector that detects an intermediate frequency from the optical signal transferred from the optical coupler and a distance calculator that obtains distance information by measuring the intermediate frequency.

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