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公开(公告)号：US20220380202A1
公开(公告)日：2022-12-01
申请号：US17744310
申请日：2022-05-13
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Luca GUERINONI , Patrick FEDELI , Luca Giuseppe FALORNI
Abstract: A microelectromechanical device includes a substrate, a first structural layer, and a second structural layer of semiconductor material. A sensing mass extends in the first structural layer and is coupled to the substrate by first elastic connections to enable oscillation of the sensing mass in a sensing direction perpendicular to the substrate by a maximum amount relative to a resting position of the sensing mass. An out-of-plane stopper structure includes an anchorage fixed to the substrate and a mechanical end-of-travel structure, which extends in the second structural layer, faces the sensing mass, and is separated therefrom by a gap having a width smaller than the maximum displacement distance of the sensing mass. The mechanical end-of-travel structure is coupled to the anchorage by second elastic connections that enable movement of the mechanical end-of-travel structure in the sensing direction in response to an impact of the sensing mass.
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公开(公告)号：US11516409B2
公开(公告)日：2022-11-29
申请号：US17527989
申请日：2021-11-16
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico Rizzardini , Lorenzo Bracco , Roberto Mura , Stefano Paolo Rivolta
IPC: H04N5/235
Abstract: A device includes a charge variation sensor having at one or more electrodes. The charge variation sensor, in operation, generates a charge variation signal indicative of changes in an electric or electrostatic charge induced on the one or more electrodes by an alternating current power source. Processing circuitry, coupled to the charge variation sensor, generates a frequency spectrum signal based on the charge variation signal and identifies a frequency of operation associated with the alternating current power source based on the generated frequency spectrum signal. A control signal is generated based on the identified frequency of operation. An image acquisition device sets an image acquisition frequency based on the control signal.
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273.发明授权公开(公告)号：US11513016B2
公开(公告)日：2022-11-29
申请号：US17168059
申请日：2021-02-04
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Mikel Azpeitia Urquia , Giorgio Allegato
Abstract: A semiconductor device for ambient sensing including: a cap traversed by a hole; and a main body mechanically coupled to the cap so as to delimit a cavity, which is interposed between the main body and the cap. The main body includes a semiconductor body and a coupling structure, which is interposed between the semiconductor body and the cap and laterally delimits a channel, which fluidically couples the cavity and the hole. The channel performs a mechanical filtering that is finer than the mechanical filtering performed by the hole.
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公开(公告)号：US11502836B2
公开(公告)日：2022-11-15
申请号：US17149623
申请日：2021-01-14
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Ruggero Susella , Guido Marco Bertoni
Abstract: A scalar multiplication operation includes an iterative procedure performing a set of operations at each iteration on a bit or on a group of consecutive bits of a secret key. The multiplication operation includes multiplying values of projective format coordinates by a random value. The random value is a product of a random number generated over a range having as end value a first value, with a second value, which is larger than said first value. The first value is a power of two of a word size multiplied by a multiplier value, minus one. The second value is equal to a power of two of a number of bits of the coordinates divided by the first value. The multiplier value is an integer greater than or equal to one and smaller than a ratio of said number of bits to the word size.
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公开(公告)号：US11491489B2
公开(公告)日：2022-11-08
申请号：US16231272
申请日：2018-12-21
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Marco Angelo Bianchessi , Lillo Raia
Abstract: A microfluidic group includes a female connector and a male needle connector. The female connector has a connector chamber in a containment body; a duct extending in the containment body to a duct opening on a first face of the connector chamber; a needle entry hole extending from a lateral face of the containment body to a second face, not facing the first face of the connector chamber; and a gasket arranged in the connector chamber. The gasket has a side wall internally delimiting a cavity and extending in part adjacent to the second face of the connector chamber. The cavity of the gasket faces the first face of the connector chamber.
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Patent Agency Ranking
公开(公告)号：US11489496B2
公开(公告)日：2022-11-01
申请号：US17172676
申请日：2021-02-10
Applicant: STMicroelectronics S.r.l.
Inventor： Mattia Fausto Moretti , Paolo Pulici , Alessio Facen
Abstract: A circuit arrangement, including: a circuit configured to synthesize a resistor having a resistance value having a variation in time equivalent to a resistance variation of a sensor resistor applied with a resistance bias voltage and a resistance current bias, wherein the circuit includes: an amplifier comprising an input transistor; a bias current generator comprising a control node coupled to an output of the input transistor, wherein the bias current generator is configured to generate a bias current flowing in the input transistor; and a further current generator configured to generate a current at least proportional to the resistance bias current and coupled to the output of the input transistor, wherein the resistance bias voltage is applied to an input of the amplifier, and wherein a transconductance of the input transistor is at least proportional to the resistance of the sensor resistor.
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公开(公告)号：US20220345150A1
公开(公告)日：2022-10-27
申请号：US17721110
申请日：2022-04-14
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Roberto MODAFFARI , Paolo PESENTI
IPC: H03M3/00
Abstract: A delta-sigma modulator includes a quantizer, a signal propagation path including a plurality of cascaded integrators coupled between the input node and the quantizer, and a feedback network including a plurality of digital-to-analog converters. In a calibration mode of operation, a first digital-to-analog converter of the plurality of digital-to-analog converters of the feedback network receives a signal including a periodic alternated digital sequence, the first digital-to-analog converter being coupled to a first integrator of the plurality of cascaded integrators, integrators of the plurality of cascaded integrators other than the first integrator operate in a gain mode of operation, the delta-sigma modulator generates a digital test signal at an output of the quantizer based on the signal including the periodic alternated digital sequence, and calibration circuitry generates a calibration signal based on the digital test signal and a reference digital word.
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278.发明授权公开(公告)号：US11482935B2
公开(公告)日：2022-10-25
申请号：US17174001
申请日：2021-02-11
Applicant: STMicroelectronics S.r.l.
Inventor： Fabio Cacciotto
Abstract: A control circuit for a driving an electronic switch associated with a switching node of a flyback converter includes a comparison circuit configured to generate a switch-off signal by comparing a current measurement signal with a current measurement threshold signal. A valley detection circuit is configured to generate a trigger in a trigger signal when a valley signal indicates a valley in a voltage at the switching node of the flyback converter, and a blanking circuit is configured to generate a switch-on signal by combining the trigger signal with a timer signal provide by a timer circuit. The timer signal indicates whether a blanking time-interval has elapsed.
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279.发明授权公开(公告)号：US11481133B2
公开(公告)日：2022-10-25
申请号：US16248538
申请日：2019-01-15
Applicant: STMicroelectronics S.r.l.
Inventor： Francesco Caserta
Abstract: A method of managing an integrated circuit memory includes having an integrated circuit card with a memory space including memory space regions for storing user profile data. The memory space is partitioned into segments of memory space regions, where the segments of memory space regions includes allocated regions and empty regions. From the empty regions, the biggest empty region of the memory space is selected. The selected biggest empty region is widened by moving memory blocks positioned in a subset of allocated regions that are at boundaries of the selected biggest empty region into other available empty regions.
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公开(公告)号：US20220337958A1
公开(公告)日：2022-10-20
申请号：US17735048
申请日：2022-05-02
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Marco VENERI , Alessandro MORCELLI
Abstract: Described herein is a MEMS acoustic transducer device provided with a micromechanical detection structure that detects acoustic-pressure waves and supplies a transduced electrical quantity, and with an integrated circuit operatively coupled to the micromechanical detection structure and having a reading module that generates at output an audio signal as a function of the transduced electrical quantity. The integrated circuit is further provided with a recognition module, which recognizes a of sound activity event associated to the transduced electrical quantity. The MEMS acoustic transducer has an output that supplies at output a data signal that carries information regarding recognition of the sound activity event.
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