Leakage-based oscillator with digital correction

    公开(公告)号:US10469058B1

    公开(公告)日:2019-11-05

    申请号:US15990944

    申请日:2018-05-29

    Abstract: A multi-stage ring oscillator generates an output clock signal having a frequency which is dependent on a digitally leakage current that is applied to each stage of the multi-stage ring oscillator. A magnitude of a leakage current sourced by each digitally controlled leakage current source is set by a control circuit in response to a selection signal. A calibration circuit processes a reference clock signal and the output clock signal generated by the multi-stage ring oscillator to make adjustment to the selection signal which drives a locking of a frequency of the output clock signal to a desired frequency.

    Method and device for monitoring a critical path of an integrated circuit

    公开(公告)号:US10451670B2

    公开(公告)日:2019-10-22

    申请号:US15378663

    申请日:2016-12-14

    Inventor: Sylvain Clerc

    Abstract: A device for monitoring a critical path of an integrated circuit includes a replica of the critical path formed by sequential elements mutually separated by delay circuits that are programmable though a corresponding main multiplexer. A control circuit controls delay selections made by each main multiplexer. A sequencing module operates to sequence each sequential element using a main clock signal by delivering, in response to a main clock signal, respectively to the sequential elements, secondary clock signals that are mutually time shifted in such a manner as to take into account the propagation time inherent to the main multiplexer.

    SINGLE PHOTON AVALANCHE GATE SENSOR DEVICE
    95.
    发明申请

    公开(公告)号:US20190312170A1

    公开(公告)日:2019-10-10

    申请号:US16222542

    申请日:2018-12-17

    Inventor: Francois ROY

    Abstract: A semiconductor substrate doped with a first doping type is positioned adjacent an insulated gate electrode that is biased by a gate voltage. A first region within the semiconductor substrate is doped with the first doping type and biased with a bias voltage. A second region within the semiconductor substrate is doped with a second doping type that is opposite the first doping type. Voltage application produces an electrostatic field within the semiconductor substrate causing the formation of a fully depleted region within the semiconductor substrate. The fully depleted region responds to absorption of a photon with an avalanche multiplication that produces charges that are collected at the first and second regions.

    Image sensor with high dynamic range

    公开(公告)号:US10397503B2

    公开(公告)日:2019-08-27

    申请号:US15376792

    申请日:2016-12-13

    Abstract: A photodiode produces photogenerated charges in response to exposure to light. An integration period collects the photogenerated charges. Collected photogenerated charges in excess of an overflow threshold are passed to an overflow sense node. Remaining collected photogenerated charges are passed to a sense node. A first signal representing the overflow photogenerated charges is read from the overflow sense node. A second signal representing the remaining photogenerated charges is read from the sense node.

    Photonic interconnection switches and network integrated in an optoelectronic chip

    公开(公告)号:US10393965B2

    公开(公告)日:2019-08-27

    申请号:US16148535

    申请日:2018-10-01

    Abstract: A photonic interconnection elementary switch is integrated in an optoelectronic chip/The switch includes first and second linear optical waveguides which intersect to form a first intersection. Two first photonic redirect ring resonators are respectively coupled to the first and second optical waveguides. Two second photonic redirect ring resonators are respectively coupled to the first and second optical waveguides. A third linear optical waveguide is coupled to one of the first ring resonators and one of the second ring resonators. A fourth linear optical waveguide is coupled to another of the first resonators and to another of the second ring resonators. A base switch, complex switch, and photonic interconnection network integrated in an optoelectronic chip, include at least two of the photonic interconnection elementary switches.

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