Patents Assigned to STMicroelectronics
  • Patent number: 8421426
    Abstract: An embodiment of a driving device is proposed for supplying at least one regulated global output current to a load. The driving device includes programming means for programming a value of the global output current within a global current range. Reference means are provided for supplying a reference voltage, which has a value corresponding to the value of the global output current. Conversion means are then used for converting the reference voltage into the global output current. In the driving device according to an embodiment of the disclosure, the conversion means include a plurality of conversion units for corresponding partial current ranges, which partition the global current range. Each conversion unit is adapted to convert the reference voltage into a partial output current that contributes to the global output current, with the partial output current that is within the corresponding partial current range.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 16, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Roberto La Rosa, Massimo Michele Antonio Sorbera
  • Patent number: 8420428
    Abstract: A method for the formation of buried cavities within a semiconductor body envisages the steps of: providing a wafer having a bulk region made of semiconductor material; digging, in the bulk region, trenches delimiting between them walls of semiconductor material; forming a closing layer for closing the trenches in the presence of a deoxidizing atmosphere so as to englobe the deoxidizing atmosphere within the trenches; and carrying out a thermal treatment such as to cause migration of the semiconductor material of the walls and to form a buried cavity. Furthermore, before the thermal treatment is carried out, a barrier layer that is substantially impermeable to hydrogen is formed on the closing layer on top of the trenches.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: April 16, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Gabriele Barlocchi, Pietro Corona, Dino Faralli, Flavio Francesco Villa
  • Publication number: 20130088298
    Abstract: A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.
    Type: Application
    Filed: July 30, 2012
    Publication date: April 11, 2013
    Applicants: STMicroelectronics, S.r.l., STMicroelectronics (Grenoble 2) SAS
    Inventors: MarcoOrazio Cavallaro, Serge Ramet, Tiziano Chiarillo
  • Publication number: 20130088263
    Abstract: A charge flow circuit for a time measurement, including a plurality of elementary capacitive elements electrically in series, each elementary capacitive element leaking through its dielectric space.
    Type: Application
    Filed: September 13, 2012
    Publication date: April 11, 2013
    Applicant: STMicroelectronics (Rousset) SAS
    Inventors: Francesco La Rosa, Pascal Fornara
  • Patent number: 8416248
    Abstract: Methods and device for in-system firmware update in an information output device are provided. In one aspect, a method of firmware update in a display device receives a set of data in an image format through a video signal input channel of an input port of the display device. The set of data is converted from the image format to an instruction set format that is different from the image format. A first set of instructions that is used to operate the display device is updated with the set of data in the instruction set format.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics Ltd.
    Inventors: I-Hung Weng, Chih-Wei Cheng
  • Patent number: 8415978
    Abstract: A state machine for generating signals configured for generating different signals according to the current state of the machine. The state machine is configured to change state both as a function of an internal timer and as a function of signals representative of events external to the state machine.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: April 9, 2013
    Assignees: STMicroelectronics s.r.l., STMicroelectronics Design and Application s.r.o.
    Inventors: Ales Loidl, Ignazio Bellomo, Luca Giussani, David Vincenzoni
  • Patent number: 8416131
    Abstract: A cinematic parameter computing method of a satellite navigation system, including: receiving signals at a receiving apparatus from a plurality of satellites; processing said signals to provide received data; computing a first cinematic parameter value of said receiving apparatus according to a first computational method using said received data; computing a second cinematic parameter value of said receiving apparatus according to a second computational method using said received data and computing a distance value representing a difference between said first and second cinematic parameter values. The distance value is compared with a reference value providing a comparison result data and selecting one of first and second computational methods based on said comparison result data.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Nicola Matteo Palella, Piergiorgio Capozio
  • Patent number: 8415908
    Abstract: A driving apparatus drives a brushless motor that includes a plurality of windings. The apparatus comprises a plurality of switch half-bridges connected to a power line and to the windings, a memory adapted to contain a plurality of signal profiles to be cyclically applied to the plurality of windings of the motor, a multiplier for multiplying the profile values of the signals from the memory by a scale factor, a control circuit adapted to generate PWM signals for the switches of the plurality of switch half-bridges according to values output by the multiplier, a polarity detector configured to detect the polarity of the current passing trough at least one winding of the motor and a scale factor controller configured to modify the scale factor according to the detected current polarity and so as to make each signal profile to be applied to each winding of the motor either higher than the back-electromotive force or equal to the back-electromotive force generated by the motor.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventor: Ezio Galbiati
  • Patent number: 8417209
    Abstract: An image frequency rejection mixer has a first differential transconductor that receives a differential mixer input signal, a second differential transconductor that receives the differential mixer input signal and cross-coupled to the first differential transconductor, a first mixing circuit that generates a first differential mixing circuit output signal by mixing a first differential information signal with a first local oscillation signal, a second mixing circuit that generates a second differential mixing circuit output signal by mixing a second differential information signal with a second local oscillation signal, with the first local oscillation signal and the second local oscillation signal being in quadrature, and an image rejection circuit that generates a differential mixer output signal from the first and second differential mixing circuit output signals.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics Design and Application GmbH
    Inventor: Sebastian Zeller
  • Patent number: 8416256
    Abstract: In a liquid crystal display (LCD) driver circuit, harmonizing a pixel inversion pattern and a dither pattern is disclosed. The pixel inversion pattern and the cooperating dither pattern interact with each other in such a way that there is substantially no discernable video artifacts generated. The cooperating dither pattern can be selected from a plurality of dither patterns using a programmable dither block.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics, Inc.
    Inventors: Greg Neal, Dinesh Shedge
  • Patent number: 8413506
    Abstract: An integrated microelectromechanical structure is provided with: a die, having a substrate and a frame, defining inside it a detection region and having a first side extending along a first axis; a driving mass, anchored to the substrate, set in the detection region, and designed to be rotated in a plane with a movement of actuation about a vertical axis; and a first pair and a second pair of first sensing masses, suspended inside the driving mass via elastic supporting elements so as to be fixed with respect thereto in the movement of actuation and so as to perform a detection movement of rotation out of the plane in response to a first angular velocity; wherein the first sensing masses of the first pair and the first sensing masses of the second pair are aligned in respective directions, having non-zero inclinations of opposite sign with respect to the first axis.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Luca Coronato, Gabriele Cazzaniga, Sarah Zerbini
  • Patent number: 8416307
    Abstract: A method of motion compensation in a camera may include deriving a motion signal representative of a motion of the camera, processing video frames of a video signal from an image sensor of the camera during a viewfinder mode to derive motion vectors between pairs of frames, and processing the motion signal with a number of combinations of gain and offset factors during the viewfinder mode. The method may also include determining combinations for producing threshold motion vectors, and applying the combination producing the threshold motion vectors for processing the motion signal during a still capture mode to produce a control signal for a motion compensating element for optics of the camera.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics (Research & Development) Limited
    Inventor: Stuart McLeod
  • Patent number: 8416597
    Abstract: A control device for a rectifier of a switching converter, the converter powered by an input voltage and suitable for providing an output current. The rectifier is suitable for rectifying an output current of the converter and includes at least one transistor. The control device is suitable for driving the at least one transistor. The control device has a first circuit suitable for identifying the start and the end of every converter switching half-cycle and measuring the duration thereof, a second circuit suitable for generating a signal for turning on the transistor after a given number of measured converter switching half-cycles and when the output current of the converter becomes greater than a reference current.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Claudio Adragna, Santo Ilardo
  • Patent number: 8416717
    Abstract: A signal communication apparatus comprising first and second channels for communicating signals between two electronic devices; each of said first and second channels has a transmitter for transmitting signals, a receiver for receiving signals and an interface arranged between the transmitter and the receiver. The transmitters code the signals in the form of a frame of H bits, with H being an integer, and adapted to serially transmit said frame of H bits through said interface, and the receivers decode the frames of H bits, a frame of H bits having P data bits, K redundancy bits and a sequence of L control bits adapted to identify the type of frame to be transmitted, with L, P and K being integers.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Giovanni Lombardo, Salvatore Giombanco, Salvatore Tumminaro, Filippo Marino
  • Patent number: 8415754
    Abstract: A capped integrated device includes a semiconductor chip, incorporating an integrated device and a protective cap, bonded to the semiconductor chip for protection of the integrated device by means of a bonding layer made of a bonding material. The bonding material forms anchorage elements within recesses, formed in at least one between the semiconductor chip and the protective cap.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alessandro Freguglia, Luigi Esposito
  • Patent number: 8416906
    Abstract: A control circuit receives a first clock signal at a first frequency, a frequency division signal specifying a divisor number, and a second clock signal at a second frequency (higher than the first frequency). The control circuit includes a phase control block that defines non-overlapping portions of a pulse of the second clock to include center, left and right portions. A determination is then made as to whether an edge of the first clock is located within the center portion. In response to such a determination, a number of periods of the second clock signal which occur within one or more periods of the first clock signal is compared to a number derived from the divisor number to generate a frequency selection signal indicative of that comparison. A controlled oscillator circuit generates the second clock signal at the second frequency, wherein the second frequency is specified by the frequency selection signal.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: April 9, 2013
    Assignee: STMicroelectronics Asia Pacific PTE Ltd
    Inventor: Beng-Heng Goh
  • Publication number: 20130084687
    Abstract: A method is for formation of an electrically conducting through-via within a first semiconductor support having a front face and comprising a silicon substrate. The method may include forming of a first insulating layer on top of the front face of the first semiconductor support, fabricating a handle including, within an additional rigid semiconductor support having an intermediate semiconductor layer, and forming on either side of the intermediate semiconductor layer of a porous region and of an additional insulating layer. The method may also include direct bonding of the first insulating layer and of the additional insulating layer, and thinning of the silicon substrate of the first semiconductor support so as to form a back face opposite to the front face.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 4, 2013
    Applicant: STMicroelectronics (Crolles 2) SAS
    Inventors: Julien CUZZOCREA, Laurent-Luc CHAPELON
  • Publication number: 20130082778
    Abstract: In an embodiment are provided are a differential amplifier, a method of amplifying a differential input signal, a device including a differential amplifier, and a low voltage differential signaling receiver.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: STMicroelectronics Pvt. Ltd.
    Inventor: Abhishek SHARMA
  • Publication number: 20130083245
    Abstract: A video processor includes a spatio-temporal noise reduction controller to determine current and previous image edge slopes and adaptively control a spatio-temporal noise reduction processor to blend current and previous images dependent on the current and previous image edge slope values.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicants: STMicroelectronics, Inc., STMicroelectronics Pvt Ltd.
    Inventors: Vatsala GOPALAKRISHNA, Ravi ANANTHAPURBACCHE, Peter SWARTZ
  • Publication number: 20130083247
    Abstract: A video decoder that separates and analyzes analog video signals includes a hue and saturation separator and a video signal determiner. The hue and saturation separator demodulates from a component video signal chroma signal, which includes a hue signal and a saturation signal. The video signal determiner determines at least one video signal characteristic of the component video signal dependent on the hue and saturation signal. The video signal determiner may include a mode determiner that determines the encoding standard of the video signal, and a color burst determiner that determines a location of a color burst signal with the video signal. The mode determiner may include a signal lock detector, a sequence matcher, and an encoding mode selector. The color burst determiner may include an absolute value determiner and a burst position determiner.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: STMicroelectronics Pvt Ltd.
    Inventor: Ravindranath Ramalingaiah MUNNAN