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    Method and device for estimating noise level of dark reference rows of an image sensor
    3.
    发明授权
    Method and device for estimating noise level of dark reference rows of an image sensor 有权

    公开(公告)号：US11128824B2

    公开(公告)日：2021-09-21

    申请号：US16711198

    申请日：2019-12-11

    Applicant: STMICROELECTRONICS SA

    Inventor： Arnaud Bourge ,  Antoine Drouot ,  Gwladys Hermant

    IPC: H04N5/361 ,  H04N5/217 ,  H04N5/232

    Abstract: A system has an array of pixels including a plurality of active pixels and a plurality of dark reference pixels and processing circuitry coupled to the array of pixels. The processing circuitry sequentially computes, for each of a plurality of pairs of sets of dark reference pixels of the plurality of dark reference pixels, absolute differences in dark signal levels of the pair of sets of dark reference pixels. The absolute differences in dark signal levels are accumulated and a noise level of the dark reference pixels of the array of pixels is estimated based on the accumulated absolute differences. The system may be employed in, for example, a back-up camera of an automobile or a mobile phone.

    ELECTRONIC DEVICE WITH AN UPSCALING PROCESSOR AND ASSOCIATED METHOD
    4.
    发明申请
    ELECTRONIC DEVICE WITH AN UPSCALING PROCESSOR AND ASSOCIATED METHOD 审中-公开

    公开(公告)号：US20180268522A1

    公开(公告)日：2018-09-20

    申请号：US15976677

    申请日：2018-05-10

    Applicant: STMicroelectronics SA ,  STMicroelectronics (Research & Development) Limited

    Inventor： Ed Hawkins ,  Arnaud Bourge ,  Chandan Siyag

    IPC: G06T3/40 ,  G06T7/50 ,  H01L31/02

    CPC classification number: G06T3/4053 ,  G06T7/50 ,  H01L31/02027

    Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.

    ANTI FLICKER FILTER FOR DTOF SENSOR
    5.
    发明申请
    ANTI FLICKER FILTER FOR DTOF SENSOR 有权

    公开(公告)号：US20220308173A1

    公开(公告)日：2022-09-29

    申请号：US17655727

    申请日：2022-03-21

    Applicant: STMICROELECTRONICS SA

    Inventor： Olivier Pothier ,  Victor Macela ,  Thierry Lebihen ,  Arnaud Bourge

    IPC: G01S7/48 ,  G01S17/89 ,  G01S7/487

    Abstract: Method, having detecting from a first histogram signal delivered by a sensor device, successive sets of targets at respective successive instants, determining for a current set of current detected targets, a current histogram output, the current histogram output having for each current detected target of the current set, a current group of parameters stored in a memory including a confidence indicator, performing a matching operation between the current set of detected targets and previous sets of detected targets stored in the memory, and performing a filtering operation of at least one parameter of the current group of parameters of at least some of the current detected targets of the current set, on the basis of the result of the matching operation, the filtering operation being weighted on the basis of at least the confidence indicators of current and previous sets of detected targets.

    APPARATUS INCLUDING A PHOTOGRAPHIC SENSOR
    7.
    发明申请
    APPARATUS INCLUDING A PHOTOGRAPHIC SENSOR 有权

    公开(公告)号：US20230010182A1

    公开(公告)日：2023-01-12

    申请号：US17808667

    申请日：2022-06-24

    Applicant: STMicroelectronics (Research & Development) Limited ,  STMICROELECTRONICS SA

    Inventor： Arnaud Bourge ,  Tanguy Le Dauphin ,  Antoine Drouot ,  Brian Douglas Stewart

    IPC: H04N5/235 ,  H04N5/243

    Abstract: In an embodiment an apparatus includes a scanning photographic sensor configured to acquire an image, according to an integration time of the sensor, of a scene illuminated with periodically emitted light pulses by a source, so that the image has a regular succession of bands with different luminosities when the integration time of the sensor is different from a period of the light pulses, a processor configured to generate a signature vector representative of the regular succession of bands with different luminosities being present in the image acquired by the photographic sensor, wherein the signature vector is independent of a reflectance of an objects of the scene and of a level of light in the scene, determine a frequency of the bands in the image on basis of the generated signature vector and determine the period of the pulses of the source on basis of the determined frequency of the bands in the image, and a controller configured to adjust the integration time of the photographic sensor so that the integration time is a multiple of the determined period of the light pulses of the source.

    Electronic device with an upscaling processor and associated method
    8.
    发明授权
    Electronic device with an upscaling processor and associated method 有权

    公开(公告)号：US10540750B2

    公开(公告)日：2020-01-21

    申请号：US15976677

    申请日：2018-05-10

    Applicant: STMicroelectronics SA ,  STMicroelectronics (Research & Development) Limited

    Inventor： Ed Hawkins ,  Arnaud Bourge ,  Chandan Siyag

    IPC: G06T3/40 ,  H01L31/02 ,  G06T7/50

    Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.

    ELECTRONIC DEVICE WITH AN UPSCALING PROCESSOR AND ASSOCIATED METHODS
    9.
    发明申请
    ELECTRONIC DEVICE WITH AN UPSCALING PROCESSOR AND ASSOCIATED METHODS 审中-公开

    公开(公告)号：US20180014006A1

    公开(公告)日：2018-01-11

    申请号：US15204185

    申请日：2016-07-07

    Applicant: STMICROELECTRONICS SA

    Inventor： Olivier POTHIER ,  Arnaud Bourge

    IPC: H04N13/02 ,  H04N5/374 ,  H04N5/33 ,  H04N5/378 ,  G06T3/40

    CPC classification number: H04N13/271 ,  G06T3/40

    Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.

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