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    ROTATING BEACON SYSTEM
    2.
    发明公开
    ROTATING BEACON SYSTEM 审中-公开
    DREHBLINKLICHTSYSTEM

    公开(公告)号：EP1799509A2

    公开(公告)日：2007-06-27

    申请号：EP05794906.7

    申请日：2005-09-08

    申请人： Electronic Controls Company

    发明人： IRELAND, Richard ,  BREWSTER, Kevin ,  MCKENDRY, Scott ,  LANING, Chris

    IPC分类号： B60Q1/26

    CPC分类号： B60Q1/2611

    摘要： A rotating beacon system (10) and a method for synchronizing multiple rotating beacons (20, 30). The rotating beacon system includes two or more rotating beacons (20, 30) and a feedback based control system (60) adapted to sense an angular position of each of the two or more rotating beacons (20, 30) and generate two or more digitally controlled currents, each of the two or more digitally controlled currents conducted to an associated rotating beacons (20, 30), the two or more digitally controlled currents driving and controlling the angular speed of each of the two or more rotating beacons (20, 30) to regulate a pre-selected phase relationship between each of the two or more rotating beacons (20, 30).

    HORN SPEAKER
    4.
    发明公开
    HORN SPEAKER 审中-公开

    公开(公告)号：EP3407617A1

    公开(公告)日：2018-11-28

    申请号：EP18166105.9

    申请日：2018-04-06

    申请人： Electronic Controls Company ,  Sungju Sound Corp.

    发明人： JANG, Dong UK ,  OLSEN, Brian

    IPC分类号： H04R1/02 ,  H04R1/28 ,  H04R1/30

    摘要： A horn speaker improves ambience and sound quality by minimizing the transmission of sound diffusion and noise while maximizing the transmission of source sound generated by a speaker unit. The sound emitted by the speaker unit is collected in a seating groove and discharged through a discharge outlet of the horn speaker by integrally forming a plurality of horns in primary and secondary cases of the horn speaker enclosure. A simplified structure reduces the size of the horn speaker and difficulty associated with its assembly. The reproduction band of sound can be extended by forming a horn in a duct structure and adding sound pressure by combining it with sound emitted from the resonance of the duct in forward and backward directions. The amplitude of the resonance point is reduced in the same band and consequently advantageously reduces distortion of the sound.