METHOD AND SYSTEM FOR CARRYING OUT ITERATIVE APPEARANCE SEARCHING

    公开(公告)号:US20250095372A1

    公开(公告)日:2025-03-20

    申请号:US18470454

    申请日:2023-09-20

    Abstract: A method and system for carrying out iterative appearance searching is disclosed. The method includes employing at least one first reference image to carry out a first instance, computer vision-driven appearance search of first video data captured across a respective first set of a plurality of first security cameras. The method also includes obtaining a second reference image, having a respective relevance confidence that satisfies a confidence threshold condition, from the portion of the first video data. The method also includes employing the second reference image for a second instance, computer vision-driven appearance search of second video data captured across a respective second set of a plurality of second security cameras.

    DUAL CONTRA-WOUND HELICAL ANTENNA FOR A COMMUNICATION DEVICE

    公开(公告)号:US20190074594A1

    公开(公告)日:2019-03-07

    申请号:US16079117

    申请日:2016-05-16

    Abstract: An antenna is provided having a primary helical coil (102) and a secondary helical coil (104) contra-wound relative to the primary helical coil. Switchable coupling between the coils allows the antenna response to switch from lower to higher frequency responses within the same Ultra High Frequency (UHF) band. A bandwidth of the same physical length antenna can be increased up to twice the bandwidth or for a fixed bandwidth, the antenna length can be shortened. For the high frequency band, when the secondary helix is disconnected from the primary helix, the primary coil operates as a interferer notch out to improve interference rejection, to reject unwanted signals from nearby radios transmitting in frequencies separated by duplex spacing, such as Terrestrial Trunked Radio (TETRA) and cellular Global System for Mobile (GSM) communication bands.

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