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公开(公告)号：US20180330787A1
公开(公告)日：2018-11-15
申请号：US16044280
申请日：2018-07-24
Inventor： Marco Pasotti , Marcella Carissimi , Vikas Rana
IPC: G11C13/00
CPC classification number: G11C13/0069 , G11C13/0004 , G11C13/0026 , G11C2013/0078
Abstract: A method is provided for operating a memory device that includes an array of memory cells coupled to a plurality of bitlines. A memory cell is selected from among the array of memory cells. The selected memory cell is coupled to a selected bitline. During a program operation, a program current pulse is injected into the selected memory cell via a first switch coupled to the bitline. At an end of the program current pulse, the selected bitline is discharged via a second switch coupled to the bitline.
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公开(公告)号：US10129942B2
公开(公告)日：2018-11-13
申请号：US15830788
申请日：2017-12-04
Applicant: STMicroelectronics S.r.l.
Inventor： Davide Lena , Simone Crespi
IPC: H05B33/08
Abstract: LED strings cascaded to one another are driven by an electronic circuit that includes regulation modules and a brightness-compensation module. The regulation modules carry out in sequence a current-regulation phase, in which they regulate the current that flows in the corresponding LED strings. The regulation module includes: a compensation regulator coupled to a compensation LED string and to a capacitor and a generator that generates an electrical quantity indicating the luminous flux emitted by the LED strings and by the compensation LED string. The compensation regulator regulates a current that flows in the compensation LED string as a function of the electrical quantity, discharging the capacitor through the compensation LED string.
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653.发明授权公开(公告)号：US10128761B2
公开(公告)日：2018-11-13
申请号：US15261340
申请日：2016-09-09
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Giovanni Gritti , Claudio Adragna
Abstract: The present disclosure is directed to a primary-controlled high power factor quasi resonant converter. The converter converts an AC power line input to a DC output to power a load, generally a string of LEDs, and may be compatible with phase-cut dimmers. The power input is fed into a transformer being controlled by a power switch. The power switch is driven by a controller having a shaping circuit. The shaping circuit uses a current generator, switched resistor and capacitor to produce a reference voltage signal. The controller drives the power switch based on the voltage reference signal, resulting in a sinusoidal input current in a primary winding of the transformer, resulting in high power factor and low total harmonic distortion for the converter.
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公开(公告)号：US10127454B2
公开(公告)日：2018-11-13
申请号：US14414048
申请日：2013-07-11
Inventor： Danilo Pau , Alberto Messina
Abstract: A method for extraction of descriptors from video content, includes the following steps: a Key Frame Extracting step, applying a local descriptors-based approach to select pictures of the incoming video as key frames that are representative of a temporal region of the video which is visually homogeneous; a Content Analysis step, analysing the content of the key frames and classifying image patches of the key frames as interesting or not for the extraction of descriptors; a Descriptors Extracting step, extracting compact descriptors from the selected key frames, and defining a set of surrounding images also on the basis of input received from the Content Analysis step; a Temporal Coding step, multiplexing information about the time points at which said key frames have been extracted in the Key Frame Extracting step with the compact descriptors extracted in the Descriptors Extracting step, obtaining the descriptors.
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公开(公告)号：US10122277B2
公开(公告)日：2018-11-06
申请号：US15824199
申请日：2017-11-28
Applicant: STMicroelectronics S.r.l.
Inventor： Andrea Villot , Enrico Papa , Silvio Pepino
Abstract: A method of controlling a switching regulator includes detecting current-limit events indicating a maximum current threshold has been exceeded. A compensation voltage is adjusted in response to the detected current-limit events, where the compensation voltage defines a duty cycle of the switching regulator. A time is detected for which no current-limit events have been detected and the value of the compensation voltage is adjusted to increase the duty cycle of the switching regulator in response to the detected time exceeding a time step threshold.
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Patent Agency Ranking
公开(公告)号：US10118819B2
公开(公告)日：2018-11-06
申请号：US15410394
申请日：2017-01-19
Applicant: STMICROELECTRONICS S.R.L.
Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.
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公开(公告)号：US10114464B2
公开(公告)日：2018-10-30
申请号：US14974630
申请日：2015-12-18
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Antonio Micali , Alberto Zancanato , Federico Rizzardini
IPC: G09G5/00 , G01P15/00 , G01C17/00 , G01C19/00 , G06F3/01 , G01B7/30 , G01V3/08 , G01C17/38 , G01C21/10 , G01C21/16 , G01C9/00
Abstract: An electronic device determines an estimate ({circumflex over (q)}) of angular position as a function of an accelerometric signal (acc) supplied by an accelerometric sensor and as a function of at least one between a gyroscopic signal (gyro) supplied by a gyroscopic sensor and a magnetic signal (mag) supplied by a magnetic-field sensor. A processing module implements a complementary filter, which is provided with a first processing block, a second processing block, and a combination block. The first processing block receives the acceleration signal (acc) and an input signal (mag′) indicative of the magnetic signal (mag) and generates a geomagnetic quaternion (qAccMag). The second processing block receives a signal indicative of the gyroscopic signal (gyro) and generates a gyroscopic quaternion (qGyro). The combination block determines the estimate ({circumflex over (q)}) of angular position by complementarily combining the geomagnetic quaternion (qAccMag) and the gyroscopic quaternion (qGyro) based on a combination factor (K) that has a dynamic value and an adaptive value and that varies as a function of the operating conditions.
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公开(公告)号：US10114114B2
公开(公告)日：2018-10-30
申请号：US14669651
申请日：2015-03-26
Applicant: STMicroelectronics S.r.l.
Inventor： Antonio Davide Leone , Davide Ugo Ghisu , Fabio Quaglia
Abstract: An ultrasonic probe includes: an ultrasonic transducer; an amplification stage; a bias circuit, which determines a bias voltage on an input terminal of the amplification stage; and a selector having an intermediate node, a high-voltage switch between the intermediate node and the transducer, and a first low-voltage switch between the intermediate node and the input terminal. A control unit controls the high-voltage switch and the first low-voltage switch so as to alternately couple and decouple the amplification stage and the transducer. A precharge circuit determines a precharge voltage on the intermediate node as a function of the bias voltage, before the amplification stage and the transducer are coupled.
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659.发明授权公开(公告)号：US10113872B2
公开(公告)日：2018-10-30
申请号：US15610251
申请日：2017-05-31
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Luca Giuseppe Falorni , Carlo Valzasina , Roberto Carminati , Alessandro Tocchio
IPC: G01C19/00 , B81B3/00 , G01C19/5712 , G01C19/5733 , G01C19/5747
Abstract: MEMS device having a support region elastically carrying a suspended mass through first elastic elements. A tuned dynamic absorber is elastically coupled to the suspended mass and configured to dampen quadrature forces acting on the suspended mass at the natural oscillation frequency of the dynamic absorber. The tuned dynamic absorber is formed by a damping mass coupled to the suspended mass through second elastic elements. In an embodiment, the suspended mass and the damping mass are formed in a same structural layer, for example of semiconductor material, and the damping mass is surrounded by the suspended mass.
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660.发明授权公开(公告)号：US10101578B2
公开(公告)日：2018-10-16
申请号：US15368184
申请日：2016-12-02
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Roberto Carminati , Enri Duqi , Sebastiano Conti
Abstract: A micro-electro-mechanical device, wherein a platform is formed in a top substrate and is configured to turn through a rotation angle. The platform has a slit and faces a cavity. A plurality of integrated photodetectors is formed in a bottom substrate so as to detect the light through the slit and generate signals correlated to the light through the slit. The area of the slit varies with the rotation angle of the platform and causes diffraction, more or less marked as a function of the angle. The difference between the signals of two photodetectors arranged at different positions with respect to the slit yields the angle.
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