Method for resetting an array of resistive memory cells

    公开(公告)号:US12165706B2

    公开(公告)日:2024-12-10

    申请号:US17782423

    申请日:2020-12-01

    Abstract: A method for resetting an array of RAM cells by applying a sequence of N reset operations, the method including at a first reset operation, defining a first reset technique and performing the first reset operation; at a j-th reset operation of a N−1 subsequent reset operations, j being an integer between 2 and N, if a correction yield of the reset technique used at the (j−1)-th reset operation fulfils a predefined condition, applying the reset technique used at the (j−1)-th reset operation to perform the j-th reset operation, if the correction yield does not fulfil the predefined condition, defining a new reset technique and applying the new reset technique to perform the j-th reset operation, the correction yield being a cumulative correction yield or a relative correction yield, the correction yield for the N reset operations being measured prior to the first reset operation.

    Method for forming a gamma image with sub-pixel resolution, taking into account a spatial non-uniformity in sensitivity

    公开(公告)号:US12085683B2

    公开(公告)日:2024-09-10

    申请号:US17864548

    申请日:2022-07-14

    CPC classification number: G01T1/2935

    Abstract: A method for determining a spatial-sensitivity function of a gamma camera, the gamma camera observing a field of observation (Ω) liable to contain radiation sources, the gamma camera including a detector material; pixels, distributed over a detecting area, each pixel being configured to form a detection signal under the effect of detection of an interaction of an ionising photon in the detector material; a unit for achieving sub-pixel resolution, the unit being programmed to assign a position (x,y) to each detected interaction on the basis of detection signals formed by a plurality of pixels, the position being determined on a mesh dividing each pixel into a plurality of virtual pixels. The method includes steps allowing weights assigned to each virtual pixel to be determined, each weight corresponding to a sensitivity of each virtual pixel.

    Device of acquisition of a depth image of a scene

    公开(公告)号:US12055638B2

    公开(公告)日:2024-08-06

    申请号:US17495761

    申请日:2021-10-06

    CPC classification number: G01S17/894 H04N23/56

    Abstract: A device of acquisition of a depth image of a scene by detection of a reflected light signal. The device includes a stack of a first sensor and of a second sensor. The first sensor includes first depth photosites configured to acquire at least one first sample of charges photogenerated during first time periods. The second sensor includes second depth photosites arranged opposite the first photosites, the second photosites being configured to acquire at least one second sample of charges photogenerated during second time periods offset with respect to the first time periods by a first constant phase shift. The first sensor or the second sensor further includes third photosites configured to acquire at least one third sample during third time periods offset with respect to the first time periods by a second constant phase shift.

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