Electronic device with an upscaling processor and associated method

    公开(公告)号:US10540750B2

    公开(公告)日:2020-01-21

    申请号:US15976677

    申请日:2018-05-10

    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.

    Device and method for recognizing hand gestures using time-of-flight sensing

    公开(公告)号:US10429940B2

    公开(公告)日:2019-10-01

    申请号:US15856603

    申请日:2017-12-28

    Inventor: Olivier Pothier

    Abstract: An electronic device includes at least one laser source configured to direct laser radiation toward a user's hand. Laser detectors are configured to receive reflected laser radiation from the user's hand. A controller is coupled to the at least one laser source and laser detectors and configured to determine a set of distance values to the user's hand for each respective laser detector and based upon a time-of-flight of the laser radiation. The controller also determines a hand gesture from among a plurality of possible hand gestures based upon the sets of distance values using Bayesian probabilities.

    THRESHOLD DETERMINATION IN A RANSAC ALGORITHM
    734.
    发明申请

    公开(公告)号:US20190141247A1

    公开(公告)日:2019-05-09

    申请号:US16236043

    申请日:2018-12-28

    Abstract: A method determines a movement of an apparatus between capturing first and second images. The method includes testing model hypotheses of the movement by for example a RANSAC algorithm, operating on a set of first points in the first image and assumed corresponding second points in the second image to deliver the best model hypothesis. The testing includes, for each first point, calculating a corresponding estimated point using the tested model hypothesis, determining the back-projection error between the estimated point and the second point in the second image, and comparing each back projection error with a threshold. The testing comprises for each first point, determining a correction term based on an estimation of the depth of the first point in the first image and an estimation of the movement between the first and second images, and determining the threshold associated with the first point by using said correction term.

    DEVICE FOR GENERATING A RANDOM SIGNAL
    735.
    发明申请

    公开(公告)号:US20190114145A1

    公开(公告)日:2019-04-18

    申请号:US16157464

    申请日:2018-10-11

    Abstract: An integrated device, for generating a random signal, includes: a first terminal; a pulse signal generator configured to generate a current pulse train on the first terminal; and a first control circuit coupled to the first terminal and configured to convert the current pulse train into a voltage signal randomly including voltage pulses greater than a threshold, the random signal containing the voltage pulses greater than the threshold.

    Method and device for measuring the frequency of a signal

    公开(公告)号:US10261117B2

    公开(公告)日:2019-04-16

    申请号:US15139801

    申请日:2016-04-27

    Abstract: A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal.

    Optical modulator having Mach-Zehnder diodes of reduced length

    公开(公告)号:US10247967B2

    公开(公告)日:2019-04-02

    申请号:US15689167

    申请日:2017-08-29

    Abstract: A Mach-Zehnder modulator (MZM) includes a first optical path with a first diode coupled to a first voltage signal node and configured to modify a phase of a first light signal transmitted through the first optical path. A further diode is positioned in the first optical path and configured to introduce a phase shift to the first light signal. A second optical path includes a second diode coupled to a second voltage signal node and configured to modify a phase of a second light signal transmitted through the second optical path. A first voltage signal carried on the first voltage signal node and a second voltage signal carried on the second voltage signal node each vary between a reverse biasing voltage level and a forward biasing voltage level. An optical coupler is coupled to the first and second optical paths.

    Fully integrated low-noise amplifier

    公开(公告)号:US10243522B2

    公开(公告)日:2019-03-26

    申请号:US15833039

    申请日:2017-12-06

    Inventor: Raphael Paulin

    Abstract: A low-noise amplifier device includes an inductive input element, an amplifier circuit, an inductive output element and an inductive degeneration element. The amplifier device is formed in and on a semiconductor substrate. The semiconductor substrate supports metallization levels of a back end of line structure. The metal lines of the inductive input element, inductive output element and inductive degeneration element are formed within one or more of the metallization levels. The inductive input element has a spiral shape and the an amplifier circuit, an inductive output element and an inductive degeneration element are located within the spiral shape.

    Dynamic particle filter parameterization

    公开(公告)号:US10229508B2

    公开(公告)日:2019-03-12

    申请号:US15382164

    申请日:2016-12-16

    Abstract: Method of estimating a position variation of a motion of an apparatus between a first instant and a second instant, said motion including a rotation of the apparatus and said position variation, said position variation including a position and a velocity, wherein estimating said position variation comprises performing a particles filtering for estimating said position and velocity from the probabilistic-weighted average of the particles, said particles filter using a known estimation of said rotation and being parameterized for taking into account a quality of said rotation estimation.

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