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公开(公告)号：EP3919945A1
公开(公告)日：2021-12-08
申请号：EP21176460.0
申请日：2021-05-28
Applicant: STMicroelectronics S.r.l.
Inventor： MAGGI, Luca , SHAW, Mark Andrew
Abstract: An apparatus (10), comprising:
an optically transparent substrate (18) having a first surface and a second surface opposed the first surface;
a piezoelectric membrane (20) arranged at the first surface of the optically transparent substrate (18), the piezoelectric membrane (20) configured to oscillate as a result of light propagated through the optically transparent substrate (18) impinging onto the piezoelectric membrane (20), wherein at least one reflective facet (40) facing the optically transparent substrate (18) is provided at the piezoelectric membrane (20) ;
an optical element (30) configured to receive a light beam at an input end and to guide the light beam towards an output end couplable to the second surface of the optically transparent substrate (18),
The optical element (30) incorporates: a light focusing path (32) configured to focus (320) a light beam at a focal point (FP) at the piezoelectric membrane (20), and at least one light collimating path (34) configured to collimate the light beam onto the at least one reflective facet (40), wherein the optical element (30) is configured to guide light reflected (R, 31) from the at least one reflective facet (40) to the input end, wherein the light reflected (R, 31) to the input end is indicative of the position of the optical element (30) with respect to the focal point (FP).-
公开(公告)号：EP3913404A1
公开(公告)日：2021-11-24
申请号：EP21174031.1
申请日：2021-05-17
Applicant: STMicroelectronics S.r.l.
Inventor： DI GRAZIA, Domenico , PISONI, Fabio
Abstract: A method for detecting spoofing in a GNSS receiver (100), comprising receiving (410) at least a satellite signal (si),
acquiring (420) said satellite signal (si) as received signal (I T ;Q T ), performing a tracking (430) of the received signal including receiving said received signal (I T ;Q T ) in at least one tracking channel (TRK i ) comprising a bank of correlators (25) receiving in-phase (I w ) and quadrature (Q w ) versions of said received signal (I T ;Q T ), generating a Pseudo Random Noise sequence (PS) at a code frequency (Fchip) set by a code Numerical Controlled Oscillator (32) comprised in the tracking channel (TRK i ) determining a code rate, performing a GNSS Pseudo Random Noise delayed sequence generation, including generating, on the basis of a Pseudo Random Noise sequence (PS) received from said GNSS Pseudo Random Noise sequence generator (23), a set of replicas of said Pseudo Random Noise sequence (PS) comprising a punctual (P) replica and a plurality of replicas which are early (El, E2; El...EK) in time or delayed (LI, L2; L1...LK) in time with respect to said punctual replica (P) of said Pseudo Random Noise sequence (PS) over a given time spacing (SM),
correlating the received signal (I w , Q w ) with each replica in said set of replicas of said Pseudo Random Noise sequence (PS) to obtain amplitude correlation values, wherein said method includes
monitoring (500) at least a tracking channel (TRK i ) to detect a spoofed signal (ssi) by generating a further plurality of replicas (E2', E1', P', L1', L2') of the Pseudo Random Noise sequence (PS) of said at least a tracking channel (TRK i ) having a respective time spacing (SM') greater than said given time spacing (SM),
correlating the received signal (I w , Q w ) at least a tracking channel (TRK i ) with each replica in said further plurality of replicas of said Pseudo Random Noise sequence (PS) to obtain further amplitude correlation values
calculating (540) a shape anomaly factor (DDM10) as a function of the further correlation amplitude values determined by the further plurality of replicas (E2', E1', P', L1', L2'),
verifying (550) if said shape anomaly factor (DDM10) is greater than a given shape anomaly threshold (ST),
in the affirmative, signaling (560) detection of a spoofed signal (ssi) on said monitored tracking channel (TRK i ).-
公开(公告)号：EP3913345A1
公开(公告)日：2021-11-24
申请号：EP21171960.4
申请日：2021-05-04
Applicant: STMicroelectronics S.r.l.
Inventor： ZAMPROGNO, Marco , BARBIERI, Andrea , FLORA, Pasquale , FURCERI, Raffaele Enrico
IPC: G01L9/04
Abstract: A bridge driver circuit (104) applies a bias voltage across first (142) and second (144) input nodes of a resistive bridge circuit (102) configured to measure a physical property such as pressure or movement. A sensing circuit (185) senses a bridge current (Ipbridge, Inbridge) that flows through the resistive bridge circuit (102) in response to the applied bias voltage. A temperature dependent sensitivity of the resistive bridge circuit (102) is determined by processing the sensed bridge current. A voltage output at first (146) and second (148) output nodes of the resistive bridge circuit (102) is processed to determine a value of the physical property. This processing further involves applying a temperature correction in response to the determined temperature dependent sensitivity.
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公开(公告)号：EP3910923A1
公开(公告)日：2021-11-17
申请号：EP21173691.3
申请日：2021-05-12
Applicant: STMicroelectronics S.r.l.
Inventor： PASSANITI, Fabio , ALESSI, Enrico Rosario
IPC: H04M1/72403 , H03K17/96
Abstract: System and method for controlling at least one functionality of an electronic device (4) on the basis of a gesture of a user, comprising: detecting, by means of a suitable sensor, a variation of electrostatic charge of the user during the execution of the gesture and generating a charge variation signal (S Q ). The gesture includes moving at least one foot upward and, subsequently, downward. By means of a processing unit (2): acquiring the charge variation signal; detecting, in the charge variation signal, a characteristic identifying the gesture of moving the foot upward; detecting, in the charge variation signal, a characteristic identifying the gesture of moving the foot downward; and controlling the functionality of the electronic device (4) only in the event that both the first and the second characteristics have been detected.
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85.发明公开
公开(公告)号：EP3896719A1
公开(公告)日：2021-10-20
申请号：EP21167866.9
申请日：2021-04-12
Applicant: STMicroelectronics S.r.l.
Inventor： RASCUNA', Simone , BADALA', Paolo , BASSI, Anna , BELLOCCHI, Gabriele
IPC: H01L21/28 , H01L29/45 , H01L21/268 , H01L21/265 , H01L21/329 , H01L29/872 , H01L29/16
Abstract: A method for manufacturing a SiC-based electronic device (50), comprising the steps of: implanting, at a front side (52a) of a solid body (52) of SiC having a conductivity of N type, dopant species of P type, thus forming an implanted region (59') that extends in depth in the solid body starting from the front side (52a) and has a top surface co-planar with said front side (52a); and generating a laser beam (82) directed towards the implanted region (59') in order to generate heating of the implanted region (59') at temperatures comprised between 1500°C and 2600°C so as to form an ohmic contact region (59") including one or more carbon-rich layers, for example graphene and/or graphite layers, in the implanted region (59') and, simultaneously, activation of the dopant species of P type.
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Patent Agency Ranking
公开(公告)号：EP3872988A1
公开(公告)日：2021-09-01
申请号：EP21159784.4
申请日：2021-02-26
Applicant: STMicroelectronics S.r.l.
Inventor： PASSI, Stefano , BARDELLI, Roberto Giorgio , MORONI, Anna
IPC: H03K4/02
Abstract: A waveform generator includes: a system control unit (2) and a plurality of channels, (3.1, ..., 3.N) controlled by the system control unit (2) and configured to supply driving signals (V1, ..., VM) for driving a respective one of an array of transducers (5.1, ..., 5.N). Each channel includes: a sequential access memory (10) having a plurality of rows, each containing instruction words (W) configured to generate a respective step of a waveform, and a memory output (10a) defined by an output row at a fixed location, the waveform being defined by a block of instruction words (W). Each channel also includes an internal control unit (12), configured to sequentially move the content of the sequential access memory (10), based on the instruction word (W) currently at the memory output (10a), so that sequences of instruction words (W) are provided at the output row (10a).
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公开(公告)号：EP3869413A1
公开(公告)日：2021-08-25
申请号：EP21155904.2
申请日：2021-02-09
Inventor： SINGH, Mr. Surinder Pal , BOESCH, Mr. Thomas , DESOLI, Mr. Giuseppe
Abstract: A convolutional neural network includes a pooling unit (106). The pooling unit performs pooling operations between convolution layers of the convolutional neural network. The pooling unit (106) includes hardware blocks (142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162) that promote computational and area efficiency in the convolutional neural network. In a possible embodiment, the pooling unit (106) comprises:
a cropper (144) configured to receive a feature tensor and to generate a cropped feature tensor including a plurality of data values by cropping the feature tensor;
a line buffer (146) configured to receive the data values from the cropper (144);
a column calculator (150) configured to perform column pooling operations on data columns from the line buffer (146); and
a row calculator (154) configured to perform row pooling operations on data rows from the column calculator (150).-
公开(公告)号：EP3859975A1
公开(公告)日：2021-08-04
申请号：EP21151784.2
申请日：2021-01-15
Applicant: STMicroelectronics S.r.l.
Inventor： MODAFFARI, Roberto , PESENTI, Paolo , NICOLLINI, Germano
Abstract: An excess loop delay (ELD) compensation network (120) for a sigma-delta modulator (10) comprises a derivative circuit (1202) configured to receive a weighed ( k 0C ) replica of the integrated signal ( y 1 ( t )) from the input integrator circuit (201) of the modulator and produce therefrom a derivative signal as well as a sign-reversal circuit (1204, 1206a, 1206b, φ C , φ C (neg)) configured to alternately reverse the sign of the derivative signal over subsequent time intervals of a duration half the sampling period (Ts) of the output quantizer circuit (A/D) of the modulator. A further integrator circuit (1208) is provided to integrate the derivative signal having alternately reversed sign along with an excess loop delay ( Z -τ ) compensation node (303) configured to inject into the signal propagation path (201, 302, 202, 303) towards the output quantizer circuit (A/D) an excess loop delay ( Z -τ ) compensation signal comprising the derivative signal after integration at the least one further integrator circuit (1208). Alternative embodiments may contemplate injecting the derivative signal into the signal propagation path towards the quantizer circuit (A/D) before integration of the derivative signal.
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89.发明公开
公开(公告)号：EP3859738A1
公开(公告)日：2021-08-04
申请号：EP21153082.9
申请日：2021-01-22
Applicant: STMicroelectronics S.r.l.
Inventor： PERRONI, Maurizio Francesco , DISEGNI, Fabio Enrico Carlo , LA PLACA, Michele , TORTI, Cesare
Abstract: A voltage generation circuit (30), for a non-volatile memory device (20) having a memory array (21) with a plurality of memory cells (2) coupled to respective wordlines (WL) and local bit-lines (BL), each of which has a storage element (2a) and a selector element (2b), a bipolar transistor being coupled to the storage element (2a) so as to enable selective flow of a cell current (I cell ) during reading or verifying operations, and a base terminal of the selector element being coupled to a respective wordline; associated to each bitline is a biasing transistor (7) having a control terminal, and the voltage generation circuit (30) generates a cascode voltage (V casc ) for this control terminal; a driver stage (15) is coupled to one end of each wordline. The voltage generation circuit generates the cascode voltage (V casc ) based on a reference voltage (V ref ), which is a function of the emulation of a voltage drop on the driver stage, on the wordline, and on the memory cell as a result of a current associated to the corresponding selector element.
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公开(公告)号：EP3859498A1
公开(公告)日：2021-08-04
申请号：EP21154066.1
申请日：2021-01-28
Applicant: STMicroelectronics S.r.l.
Inventor： RIZZARDINI, Federico , RIVOLTA, Stefano Paolo , BRACCO, Lorenzo
IPC: G06F3/0346 , G06F3/0354
Abstract: In a pointing electronic device (1), a sensor fusion processing stage (5) generates an orientation estimation quantity (β') indicative of an orientation about a longitudinal axis (Y) based on a sensor fusion algorithm envisaging processing of acceleration (Acc) and gyroscopic (Gyro) signals; and a pointing determination stage implements an orientation-compensation of the gyroscopic signal as a function of the orientation estimation and generates screen-frame displacement data corresponding to 3D-space movements of the pointing electronic device based on the orientation-compensated gyroscopic signal. A first processing block (20) improves a starting value of the roll estimation, used to decrease an initial roll estimation error, by storing past values of the acceleration signal, during a time interval preceding start-up; and, upon start-up, retrieving and processing the stored past values to generate processed acceleration data, used by the sensor fusion processing stage to initialize the sensor fusion algorithm and generate the starting value of the roll estimation quantity. A second processing block 22 increases the speed of recovery of the initial orientation estimation error after start-up. (Figure 5)
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