Patents Assigned to STMicroelectronics
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Patent number: 8476730Abstract: An embodiment of a Geiger-mode avalanche photodiode, having: a body made of semiconductor material of a first type of conductivity, provided with a first surface and a second surface and forming a cathode region; and an anode region of a second type of conductivity, extending inside the body on top of the cathode region and facing the first surface. The photodiode moreover has: a buried region of the second type of conductivity, extending inside the body and surrounding an internal region of the body, which extends underneath the anode region and includes the internal region and defines a vertical quenching resistor; a sinker region extending through the body starting from the first surface and in direct contact with the buried region; and a contact region made of conductive material, overlying the first surface and in direct contact with the sinker region.Type: GrantFiled: April 21, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics S.r.l.Inventors: Delfo Nunziato Sanfilippo, Massimo Cataldo Mazzillo, Piero Giorgio Fallica
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Patent number: 8478332Abstract: A receiver of a signal communication apparatus; the apparatus having a transmitter for transmitting the signals, the receiver for receiving the signals and a galvanically isolated wireless interface interposed between the transmitter and the receiver and having a transmitting antenna and a receiving antenna. The receiver including a disturbance rejection circuit coupled to the receiving antenna and capable of compensating for the parasite currents flowing between the transmitting antenna and the receiving antenna at the potential variations between the input and output of the galvanic isolation interface.Type: GrantFiled: July 29, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics, S.R.L.Inventors: Salvatore Giombanco, Michele Grande, Giovanni Lombardo, Salvatore Tumminaro, Filippo Marino
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Patent number: 8476518Abstract: A method includes receiving an audio signal and identifying one or more steady-state segments of the audio signal. The method also includes identifying at least one portion of the one or more segments that contains a specified frequency. Further, the method includes generating a wavetable using the at least one identified portion of the one or more segments. In addition, the method could include synthesizing an output audio signal using the wavetable. The output audio signal could represent a ringtone in a mobile telephone.Type: GrantFiled: November 30, 2004Date of Patent: July 2, 2013Assignee: STMicroelectronics Asia Pacific Pte. Ltd.Inventors: Kabi P. Padhi, Jianhua Sun
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Patent number: 8476884Abstract: A method is provided for controlling a converter of the multiphase interleaving type. According to the method, there is detected when a change of the load applied to an output terminal of the converter occurs. All the phases of the converter are simultaneously turned off, and a driving interleaving phase shift is recovered so as to restart a normal operation of the converter. A controller for carrying out such a method is also provided.Type: GrantFiled: April 19, 2011Date of Patent: July 2, 2013Assignee: STMicroelectronics S.r.L.Inventors: Alessandro Zafarana, Osvaldo Zambetti
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Patent number: 8476936Abstract: A circuit for converting the state of a sensor into a signal interpretable by an electronic circuit, including: a comparator of the voltage level of an input terminal with respect to a reference level, the sensor being intended to be connected between a terminal of application of a first power supply voltage and the input terminal; a current-limiting element between said input terminal and the ground; and a switching element in series with the current source and intended to be controlled by a pulse train.Type: GrantFiled: November 9, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics (Tours) SASInventor: Martial Boulin
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Patent number: 8476948Abstract: A Schmitt trigger circuit includes a first inverter having an input coupled to an input terminal; a second inverter having an input coupled to the input terminal; a first transistor having a source coupled to VDD, a drain coupled to an output of the first inverter, and a gate coupled to an output terminal; a second transistor having a source coupled to ground, a drain coupled to an output of the second inverter, and a gate coupled to the output terminal; a third transistor having a source coupled to VDD, a drain coupled to the output terminal, and a gate coupled to the output of the first inverter; and a fourth transistor having a source coupled to ground, a drain coupled to the output terminal, and a gate coupled to the output of the second inverter.Type: GrantFiled: November 6, 2009Date of Patent: July 2, 2013Assignee: STMicroelectronics International N.V.Inventor: Rajeev Jain
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Patent number: 8477550Abstract: A sensing circuit for use in a semiconductor memory device includes first and second conducting lines for conducting a bit signal to and from a memory cell. The circuit further includes a sense amplifier coupled to the first and second conducting lines for sensing a bit signal, a charge storing element for generating a predefined potential, and first and second switching element respectively coupled to the first and second conducting lines. The first and second switching elements are selectively controllable to connect the first and second conducting line to the charge storing element so as to induce the generated predefined voltage on the first or second conducting lines.Type: GrantFiled: August 16, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics International N.V.Inventors: Shailendra Sharad, Rupak Kundu, G. Penaka Phani
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Patent number: 8476765Abstract: A copper interconnect structure has an intrinsic graphene cap for improving back end of line (BEOL) reliability of the interconnect by reducing time-dependent dielectric breakdown (TDDB) failure and providing resistance to electromigration. Carbon atoms are selectively deposited onto a copper layer of the interconnect structure by a deposition process to form a graphene cap. The graphene cap increases the activation energy of the copper, thus allowing for higher current density and improved resistance to electromigration of the copper. By depositing the graphene cap on the copper, the dielectric regions remain free of conductors and, thus, current leakage within the interlayer dielectric regions is reduced, thereby reducing TDDB failure and increasing the lifespan of the interconnect structure. The reduction of TDDB failure and improved resistance to electromigration improves BEOL reliability of the copper interconnect structure.Type: GrantFiled: December 6, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics, Inc.Inventors: John Hongguang Zhang, Cindy Goldberg, Walter Kleemeier, Ronald Kevin Sampson
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Patent number: 8474317Abstract: A microelectromechanical device includes a body, a movable mass, elastically connected to the body and movable in accordance with a degree of freedom, and a driving device, coupled to the movable mass and configured to maintain the movable mass in oscillation at a steady working frequency in a normal operating mode. The microelectromechanical device moreover includes a start-up device, which is activatable in a start-up operating mode and is configured to compare a current oscillation frequency of a first signal correlated to oscillation of the movable mass with a reference frequency, and for deciding, on the basis of the comparison between the current oscillation frequency and the reference frequency, whether to supply to the movable mass a forcing signal packet so as to transfer energy to the movable mass.Type: GrantFiled: December 21, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics S.r.l.Inventors: Alessandra Maria Rizzo Piazza Roncoroni, Carolo Caminada, Luciano Prandi
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Patent number: 8476136Abstract: In an MIS structure a field plate electrode is incorporated below a buried gate electrode by using an insulating oxide layer, which is formed concurrently with the gate dielectric layer. In order to obtain superior dynamic behavior and enhanced dielectric strength the oxidation behavior of the field plate electrode is modified, for instance by incorporating a desired high concentration of arsenic.Type: GrantFiled: December 13, 2011Date of Patent: July 2, 2013Assignee: STMicroelectronics S.r.l.Inventors: Anna Borzi, Corrado Coccorese, Giuseppe Morale, Domenico Repici
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Patent number: 8477540Abstract: At the bottom of a column (COLi) of memory cells (CEL) of the SRAM type with five portless transistors, there is placed an additional cell (CLS), with a structure identical to the cells (CEL), which makes it possible to write and read a datum in a memory cell (CEL) of the column without using a read amplifier.Type: GrantFiled: July 23, 2010Date of Patent: July 2, 2013Assignee: STMicroelectronics (Tours) SASInventors: Lahcen Hamouche, Jean-Christophe Lafont
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Patent number: 8477116Abstract: A touch screen capable of correctly identifying multiple touches employs multiple active line arrays oriented to provide multi-dimensional data. Three arrays of capacitance based active lines are each distinctly oriented to form a plurality of intersections. A first and second array are generally oriented perpendicularly while a third array is oriented to bisect the resulting matrix such that the active lines of the third array also intersect the existing vertices. As a result of a touch each active line array identifies the location of the touch from three distinct directions. Ambiguity from dual touch scenarios existing in dual array systems is removed by providing an additional reference.Type: GrantFiled: June 13, 2011Date of Patent: July 2, 2013Assignee: STMicroelectronics Asia Pacific Pte Ltd.Inventor: Kusuma Adi Ningrat
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Publication number: 20130162297Abstract: A peak detector circuit receives an oscillating power supply signal. A capacitor is selectably coupled to the signal and charged to a value corresponding to a peak value of the signal. A switch is then opened to isolate the capacitor. A comparator continually compares the signal with the value stored on the capacitor. When the signal rises to within a selected threshold, relative to the stored value, the comparator produces a command signal to close the switch, again coupling the capacitor to the signal. The peak detector can also include a tracking circuit that controls the capacitor to track the oscillating signal while the switch is closed, a timer circuit configured to close the switch and activate the tracking circuit if more than a selected time passes without production of a command signal, and a circuit configured to control the polarity of a leakage current of the capacitor.Type: ApplicationFiled: December 19, 2012Publication date: June 27, 2013Applicant: STMICROELECTRONICS S.R.L.Inventor: STMICROELECTRONICS S.R.L.
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Publication number: 20130164658Abstract: A method for designing a photolithography mask and a light source may include designing an initial photolithography mask and an initial light source using an initial target pattern corresponding to a desired target pattern in a resist layer. The method may also include designing a new target pattern and designing a new photolithography mask and/or a new light source using the new target pattern.Type: ApplicationFiled: December 26, 2012Publication date: June 27, 2013Applicant: STMicroelectronics (Crolles 2) SASInventor: STMicroelectronics (Crolles 2) SAS
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Publication number: 20130161806Abstract: A device and method for minimizing the forces that may compromise a lead frame mount to a support structure in an integrated circuit die package during various packaging method steps. When a window clamp is used to provide pressure during a lead frame bonding step or during a wire bonding step during packaging, the vertical force applied by the window clamp may be transferred in lateral direction by the physical contour of the top plate of the support structure. By changing the physical contour of the top plate of the support structure, such as by disposing a specific kind of contoured protrusion, one may minimize or eliminate the lateral forces that act against achieving a solid bond of the lead frame to the support structure. Further, during wire bonding, the same minimization or elimination of lateral forces lead to improved wire bonding.Type: ApplicationFiled: December 22, 2011Publication date: June 27, 2013Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD.Inventors: Xueren ZHANG, Kim-Yong GOH, Wingshenq WONG
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Publication number: 20130163836Abstract: The mass of an object may be estimated based on intersection points of a representation of a surface in an image space with cubes defining the image space, the surface representing a surface of an object. The representation may be, for example, based on marching cubes. The mass may be estimated by estimating a mass contribution of a first set of cubes contained entirely within the representation of the surface, estimating a mass contribution of a second set of cubes having intersection points with the representation of the surface, and summing the estimated mass contribution of the first set of cubes and the estimated mass contribution of the second set of cubes. The object may be segmented from other portions of an image prior to estimating the mass of the object.Type: ApplicationFiled: December 26, 2012Publication date: June 27, 2013Applicant: STMicroelectronics S.r.l.Inventor: STMicroelectronics S.r.l.
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Publication number: 20130162871Abstract: Image defects in digital images are easily detectable by the human eye but may be difficult to detect in a computer-implemented fashion. In an embodiment of a digital-image-acquisition device, defects are removed on the CFA domain before color interpolation takes place. In order to allow cancellation of couplets of defective pixels, a two pass embodiment is presented. Such embodiment presents methods and systems that can remove both couplets and singlets without damaging the image. The system includes a ring corrector that detects a defect in the ring of pixels that surround a central pixel, a singlet corrector that detects and corrects the central pixel and removes a couplet if the ring corrector is activated, whereas if the ring corrector is switched off, the singlet corrector only removes singlets, and a peak-and-valley detector that avoids overcorrection by avoiding correcting signal peaks or valleys in case of spikes or drops in signal.Type: ApplicationFiled: December 20, 2012Publication date: June 27, 2013Applicant: STMICROELECTRONICS S.R.L.Inventor: STMicroelectronics S.r.l.
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Publication number: 20130166851Abstract: In managing incoming bus traffic storage for store cell memory (SCM) in a sequential-write, random-read system, a priority encoder system can be used to find a next empty cell in the sequential-write step. Each cell in the SCM has a bit that indicates whether the cell is full or empty. The priority encoder encodes the next empty cell using these bits and the current write pointer. The priority encoder can also find next group of empty cells by being coupled to AND operators that are coupled to each group of cells. Further, a cell locator selector selects a next empty cell location among priority encoders for cell groups of various sizes according to an opcode by appending ‘0’s to cell locations outputs from priority encoders that are smaller than the size of the SCM.Type: ApplicationFiled: December 23, 2011Publication date: June 27, 2013Applicant: STMicroelectronics Pvt. Ltd.Inventor: Sandeep ROHILLA
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Publication number: 20130162296Abstract: A peak detector circuit receives an oscillating power supply signal. A capacitor is selectably coupled to the signal and charged to a value corresponding to a peak value of the signal. A switch is then opened to isolate the capacitor. A comparator continually compares the signal with the value stored on the capacitor. When the signal rises to within a selected threshold, relative to the stored value, the comparator produces a command signal to close the switch, again coupling the capacitor to the signal. The peak detector can also include a tracking circuit that controls the capacitor to track the oscillating signal while the switch is closed, a timer circuit configured to close the switch and activate the tracking circuit if more than a selected time passes without production of a command signal, and a circuit configured to control the polarity of a leakage current of the capacitor.Type: ApplicationFiled: December 19, 2012Publication date: June 27, 2013Applicant: STMICROELECTRONICS S.R.L.Inventor: STMICROELECTRONICS S.R.L.
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Publication number: 20130166890Abstract: An arrangement of at least two arithmetic logic units carries out an operation defined by a decoded instruction including at least one operand and more than one operation code. The operation codes and at least one operand are received and corresponding executions are performed by the arithmetic logic units on a single clock cycle. The result of the execution from one arithmetic logic unit is used as an operand by a further arithmetic logic unit. The decoding of the instruction is performed in an immediately preceding single clock cycle.Type: ApplicationFiled: February 11, 2013Publication date: June 27, 2013Applicant: STMicroelectronics (Research & Development) LimitedInventor: STMicroelectronics (Research & Development) Limited