SYSTEMS AND METHODS FOR OPTIMIZING SHORT-RANGE WIRELESS READ OF CONTACTLESS CARDS USING VIDEO SIGNAL

    公开(公告)号:US20250158658A1

    公开(公告)日:2025-05-15

    申请号:US18388945

    申请日:2023-11-13

    Abstract: The disclosed systems and methods are directed to optimizing short-range wireless read operation for performing a proximity-based reading of a contactless card by a NFC reading unit of a user device. The described implementation utilizes a video signal from a camera unit of the user device which is automatically activated upon detection of an NFC tag within a communication field of the reading unit. Various aspects of the video signal may be analyzed and processed for determination of the final position of the card on the user device, prior to performing a NFC read, following a card tap action by the user. The described implementation uses variations in signal attributes of the video feed to determine a trajectory of the card within the optical view field until the video signal goes dark or drops below a threshold.

    Infrared imaging microbolometer and associated production methods

    公开(公告)号:US12270710B2

    公开(公告)日:2025-04-08

    申请号:US18010901

    申请日:2021-07-27

    Applicant: LYNRED

    Abstract: An infrared imaging microbolometer integrating a membrane assembled in suspension above a substrate by means of holding arms attached to anchoring nails is disclosed. The membrane includes a support layer crossing the upper end of the anchoring nails. It also includes an absorber or electrode deposited on the support layer and on the anchoring nails with a pattern forming at least two electrodes. It further includes a dielectric layer deposited on the absorber or electrode and on the support layer, at least two conductive vias formed through the dielectric layer in contact with the at least two electrodes, and a thermometric or thermoresistive material arranged on a planar surface formed at the level of the upper ends of the conductive vias.

    Target for multispectral geometrical calibration

    公开(公告)号:US12254653B2

    公开(公告)日:2025-03-18

    申请号:US18021795

    申请日:2021-08-18

    Abstract: A target and a method of calibration of an IR camera unit is disclosed. The target may include, a substantially flat metallic plate, such that a first surface of the metallic plate has a surface roughness of between N9 to N10; and a pattern made from a polymeric ink applied on the first surface. The method may include, receiving from an IR camera, included in the camera unit, an image of the target taken in the infrared spectrum; extracting parameters, related to the camera, form the image; and calibrating the camera based on the extracted first parameters.

    DIFFERENTIAL MEASUREMENT OF IR ABSORPTION IN PLASMONIC MEMS SENSORS

    公开(公告)号:US20250076190A1

    公开(公告)日:2025-03-06

    申请号:US18950734

    申请日:2024-11-18

    Abstract: In some examples, an apparatus comprises a chopper, a first microelectromechanical system (MEMS) device, a second MEMS device, and a processing circuit. The chopper configured is to repeatedly switch states to enable and disable provision of a light signal. The first MEMS device is configured to provide first and second irradiance signals when the chopper is in, respectively, first and second states The second MEMS device is configured to provide first and second reference signals when the chopper is in, respectively, the first and second states. The processing circuit is configured to generate a first signal based on the first irradiance signal and the first reference signal, generate a second signal based on the second irradiance signal and the second reference signal, and provide a third signal at the processing output representing an irradiance measurement of the light source based on a difference between the first and second signals.

    RESIN PANEL FOR INFRARED SENSOR, AND INFRARED SENSOR AND ARTICLE EMPLOYING SAID RESIN PANEL

    公开(公告)号:US20250052620A1

    公开(公告)日:2025-02-13

    申请号:US18847999

    申请日:2023-03-23

    Abstract: Provided is a resin panel which, when applied as a protective cover of an infrared sensor, can inhibit an infrared sensor from being deteriorated in accuracy. A resin panel for an infrared sensor, the resin panel comprising a resin layer and a plastic film, as well as comprising a conductive layer and a pressure-sensitive adhesive layer between the resin layer and the plastic film, and satisfying at least one of the following expressions (1) and (2): 50 μm≤thickness of the pressure-sensitive adhesive layer . . . (1); and 30≤T×Y3 . . . (2); wherein “T” represents a thickness (unit: “μm”) of the plastic film, and “Y” represents a Young's modulus (unit: “GPa”) of the plastic film.

    Process control method for a 3D-printing process

    公开(公告)号:US12188828B2

    公开(公告)日:2025-01-07

    申请号:US17498816

    申请日:2021-10-12

    Abstract: A process control method for a 3D-printing process using a 3D printer. The 3D printer has a build platform, a light source, a receiving device for printing material and a control device by which an object can be produced layer-wise or continuously from the printing material. The method includes using a thermal imaging camera, the output signal of which is transmitted to the control device, connected to the 3D printer, The method includes the following steps: illuminating a layer or parts of said layer positionally selectively, detecting the temperature of the layer during the polymerisation using the thermal imaging camera, ending the building process of a layer by ending the illumination, the time of the end of the illumination being established by a predefined temperature Tmax or a predefined change in temperature dT/dt being reached.

    Method and system for optimizing sampling of short-wave infrared detector

    公开(公告)号:US12185001B1

    公开(公告)日:2024-12-31

    申请号:US18783459

    申请日:2024-07-25

    Inventor: Fangyu Xu

    Abstract: A method and a system for optimizing sampling of short-wave infrared detector relate to the technical field of image processing. The method includes: enabling the multiple integrating readout function of the short-wave infrared detector; performing n integrating imaging on a target region by using a multiple integrating readout camera, subtracting a first frame image from all images to obtain n images within one integrating period; determining the correction coefficient sequence based on the integrating capacitor, the sampling capacitor, and the sampling sequence; carrying out multiplication correction respectively on the n images in sequence according to a one-to-one correspondence mode of the sampling sequence of the n images and the correction coefficient sequence order of the n images to obtain n corrected images; and performing line fitting on the corrected n images to obtain the algorithm output values for each pixel of the processed images.

    Thermal quality mappings
    9.
    发明授权

    公开(公告)号:US12135242B2

    公开(公告)日:2024-11-05

    申请号:US17467357

    申请日:2021-09-06

    Abstract: In some examples, a method for generating an interactive three-dimensional quantitative thermal heat flow mapping of an environment comprises generating a three-dimensional representation comprising multiple surfaces defining respective boundaries of the environment, generating a thermal image representing a surface temperature at multiple points of the surfaces, determining a measure for an ambient temperature within the environment, determining respective measures for incident radiant temperature of the surfaces, determining respective measures for the emissivity of the surfaces, providing a measure of temperature outside of a surface, calculating, at each of the multiple points, a value for the instantaneous heat flow per unit area using the measures for surface temperature, ambient temperature within the environment and incident radiant temperature of the surfaces, and using the values for the instantaneous heat flow per unit area, and the measure of temperature outside of a surface, calculating respective measures for thermal transmittance at the multiple points.

    INFRARED IMAGING DEVICE
    10.
    发明公开

    公开(公告)号:US20240328862A1

    公开(公告)日:2024-10-03

    申请号:US18698187

    申请日:2022-10-07

    Applicant: LYNRED

    Inventor: Gabriel JOBERT

    CPC classification number: G01J5/0859 G01J5/0205 G01J5/0879 G01J2005/0077

    Abstract: The present description concerns an infrared imaging device (200) comprising an infrared camera (210) having an optical axis (A), said camera being intended to detect an infrared radiation in a spectral range through an element (132) transparent to said infrared radiation, the transparent element being inclined by an angle of inclination (a) greater than 0° and smaller than 90° or smaller than 0° and greater than −90° relative to an image capture direction (C);
    the device further comprising a refractor element (230) transparent to the infrared radiation in the spectral range and adapted to be positioned between the transparent element and the infrared camera, said refractor element comprising a virtual exit facet of the refractor element, corresponding to an exit facet (234) of the refractor element in a tunnel diagram of said refractor element, said virtual exit facet being substantially parallel to an entry facet (232) of the refractor element.

Patent Agency Ranking