Patents Assigned to STMicroelectronics
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Patent number: 8407563Abstract: A system and method for correcting errors in an ECC block using soft-decision data. In an embodiment, a soft-decision ECC decoding method, uses “soft” data indicative of how reliable bits of data are when read out. Such reliability information may be used to identify particular symbols with a higher likelihood of error such that these symbols may be changed in an attempt to reduce the total number of errors in the data. In an embodiment, a soft-decision ECC decoding path may include a reliability checker operable to receive bits of data read from a data store and operable to associate a reliability factor with each bit of data. Then, an update module may iteratively change bits or groups of bits based upon an ordering of the reliability factors.Type: GrantFiled: December 31, 2009Date of Patent: March 26, 2013Assignee: STMicroelectronics, Inc.Inventors: Razmik Karabed, Hakan C. Ozdemir, Vincent Brendan Ashe, Richard Barndt
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Patent number: 8405202Abstract: A packaging scheme for MEMS device is provided. A method of packaging MEMS device in a semiconductor structure includes forming an insulation fence that surrounds the MEMS device on the semiconductor structure. The method further includes attaching a wafer of dielectric material to the insulation fence. The lid wafer, the insulation fence, and the semiconductor structure enclose the MEMS device.Type: GrantFiled: December 31, 2009Date of Patent: March 26, 2013Assignee: STMicroelectronics, Inc.Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen, Venkata Ramana Yogi Mallela
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Patent number: 8406068Abstract: A voltage shifter has a supply line receiving a supply voltage that varies between a first operating value in a first operating condition and a second high operating value, in a second operating condition. A latch stage is connected to an output branch and to a selection circuit, which receives a selection signal that controls switching of the latch stage. The latch stage is coupled to the supply line and to a reference potential line, which receives a reference voltage that can vary between a first reference value, when the supply voltage has the first operating value, and a second reference value, higher than the first reference value, when the supply voltage has the second operating value. An uncoupling stage is arranged between the latch stage and the selection circuit and uncouples them in the second operating condition, when the supply voltage and the reference voltage are at their second, high, value.Type: GrantFiled: September 17, 2010Date of Patent: March 26, 2013Assignee: STMicroelectronics S.r.l.Inventors: Enrico Castaldo, Gianbattista Lo Giudice, Alfredo Signorello
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Patent number: 8405462Abstract: A cascode amplifier comprising at least two phase-shift stages controllable between an input transistor having a control terminal connected to an input terminal of the amplifier, and an output terminal of the amplifier.Type: GrantFiled: January 13, 2011Date of Patent: March 26, 2013Assignee: STMicroelectronics S.A.Inventors: Baudouin Martineau, Olivier Richard
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Patent number: 8405144Abstract: A semiconductor device with vertical current flow includes a body having a substrate made of semiconductor material. At least one electrical contact on a first face of the body. A metallization structure is formed on a second face of the body, opposite to the first face. The metallization structure is provided with metal vias, which project from the second face within the substrate so as to form a high-conductivity path in parallel with portions of said substrate.Type: GrantFiled: January 24, 2012Date of Patent: March 26, 2013Assignee: STMicroelectronics S.r.l.Inventors: Angelo Magri', Antonio Damaso Maria Marino
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Patent number: 8406735Abstract: A method pairs electronic equipment, particularly, in a wireless network system. The method includes: providing first and second wireless electronic equipment to be paired which store a first and a second public key, respectively, and providing a user with a wireless portable electronic device which stores a third public key. Then, the portable electronic device transmits the third public key in turn to the first and second electronic equipment, and receiving from the first and second equipment the first and second public keys, respectively. Moreover, the portable electronic device calculates first and second numbers starting from the first and second public keys, respectively. The same first and second numbers is independently calculated by the first and second electronic equipment, respectively, starting from the third public key and representing secret numbers shared between the portable device and the first and second electronic equipment.Type: GrantFiled: June 24, 2008Date of Patent: March 26, 2013Assignee: STMicroelectronics S.r.l.Inventor: Guido Marco Bertoni
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Patent number: 8405316Abstract: A control device of a driving circuit of a discharge lamp is described. The driving circuit comprises an half bridge with a high side and a low side switches and the control device comprises a first device configured to control the switching frequency of the half bridge and a second device configured to detect the saturation current condition of the choke or the over current condition by detecting, cycle by cycle, a signal representative of the current passing through the low side switch. The second device generate a signal to cause the turning off of the low side switch and the turning on of the high side switch when the saturation current or over current condition of the choke is detected.Type: GrantFiled: December 29, 2010Date of Patent: March 26, 2013Assignee: STMicroelectronics S.r.l.Inventors: Luca Giussani, Romino Cretone
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Patent number: 8405942Abstract: An integrated circuit protected against electrostatic discharges, having output pads coupled to amplification stages, each stage including, between first and second power supply rails, a P-channel MOS power transistor in series with an N-channel MOS power transistor, this integrated circuit further including protection circuitry for simultaneously turning on the two transistors when a positive overvoltage occurs between the first and second power supply rails.Type: GrantFiled: February 7, 2011Date of Patent: March 26, 2013Assignee: STMicroelectronics (Rousset) SASInventor: François Tailliet
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Publication number: 20130069624Abstract: An activity detector for a differential signal formed by two components may include a current source connected to a power supply line, and a first transistor has a drain being powered by the current source, and has a source that forms a first input terminal receiving a first component of the differential signal. A second transistor has a drain being powered by the current source, and has a source forms a second input terminal receiving the second component of the differential signal. A bias circuit applies a potential to the gates of the first and second transistors, establishing a balance condition where all the current from the current source is distributed between the two transistors when the first and second input terminal potential is equal to a threshold value. An activity indication terminal is taken from the drains of the first and second transistors.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicant: STMicroelectronics (Grenoble 2) SASInventors: Fouad Bissane, Hugo Gicquel
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Publication number: 20130070429Abstract: A semiconductor structure including a high-voltage transistor; voltage dropping circuitry, at least part of which is overlapping the high-voltage transistor; at least one intermediate contact point to the voltage dropping circuitry, connected to at least one intermediate position between a first and a second end of the voltage dropping circuitry; and at least one external connection connecting the at least one intermediate contact point to outside of the semiconductor structure.Type: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: STMicroelectronics S.r.I.Inventors: Riccardo Depetro, Aldo Vittorio Novelli, Ignazio Salvatore Bellomo
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Publication number: 20130070830Abstract: A method for characterizing jitter of an internal clock signal of a circuit may include generating a series of samples of the internal clock signal by a reference clock signal, comparing the word formed by the N most recent samples of the series to an N-bit pattern, where N is an integer greater than, or equal to 2, and incrementing a first counter if the word complies with the pattern. The method may also include incrementing a second counter when the count of the first counter reaches a first threshold X1, and incrementing a third counter when the count of the first counter reaches a second threshold different from the first. The method may include calculating an average p and a standard deviation ? of a Gaussian density curve as a function of the counts reached in the second and third counters.Type: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: STMicroelectronics (Grenoble2) SASInventor: Herve LE-GALL
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Publication number: 20130069805Abstract: Disclosed is keypad circuitry operable to detect a pressed key while reducing electromagnetic interference (EMI). The keypad circuitry is operable to reduce EMI in two ways: a) reducing the voltage swing occurring at the row circuitry and column circuitry of the keypad, and b) reducing the number of signal transitions by restricting the signal transitions to occurring at the column and row corresponding to a pressed key. By limiting signal transitions to occurring only at the row and column corresponding to a pressed key, fewer signal transitions occur, and thus, less EMI is produced. Additionally, reduced voltage swings at the row circuitry and column circuitry results in reduced EMI.Type: ApplicationFiled: September 15, 2011Publication date: March 21, 2013Applicant: STMicroelectronics Asia Pacific Pte LtdInventors: Hong Chean Choo, Kien Beng Tan, Gee Heng Loh
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Publication number: 20130069218Abstract: The integrated circuit packaging techniques of the disclosed embodiments utilize a thermally conductive heat sink to partially enclose an integrated circuit. The heat sink is separated from the integrated circuit by a substrate that is conformally positioned into a recess in the heat sink, enabling the heat sink to transfer thermal energy from the integrated circuit.Type: ApplicationFiled: September 20, 2011Publication date: March 21, 2013Applicant: STMicroelectronics Asia Pacific Pte Ltd.Inventor: Lee Hua Alvin Seah
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Publication number: 20130072032Abstract: A method for depositing a silicon oxide layer on a substrate including a silicon region and a silicon-germanium region, including the steps of: forming a very thin silicon layer having a thickness ranging from 0.1 to 1 nm above silicon-germanium; and depositing a silicon oxide layer on the substrate.Type: ApplicationFiled: July 27, 2012Publication date: March 21, 2013Applicants: STMicroelectronics S.A., International Business Machines Corporation, STMicroelectronics (Crolles 2) SASInventors: Didier Dutartre, Nicolas Breil, Yves Campidelli, Olivier Gourhant
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Patent number: 8401404Abstract: An on-chip receiver for flows of information conveyed to a target via optical signals with different wavelengths includes a plurality of photo-detector modules, each sensitive to a different wavelength, for converting a respective optical signal at input into an electrical signal, a plurality of de-serialization circuits acting on the electrical signals for converting into packet traffic the flows of information received via the photo-detector modules, and an arbitration node acting on the packet traffic to enable a single packet at a time to achieve the target.Type: GrantFiled: May 28, 2010Date of Patent: March 19, 2013Assignee: STMicroelectronics S.r.l.Inventors: Alberto Scandurra, Giuseppe Guarnaccia, Salvatore Pisasale, Fabio Zito
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Patent number: 8400257Abstract: The present disclosure is directed to a thin film resistor structure that includes a resistive element electrically connecting first conductor layers of adjacent interconnect structures. The resistive element is covered by a dielectric cap layer that acts as a stabilizer and heat sink for the resistive element. Each interconnect includes a second conductor layer over the first conductive layer. The thin film resistor includes a chromium silicon resistive element covered by a silicon nitride cap layer.Type: GrantFiled: August 24, 2010Date of Patent: March 19, 2013Assignees: STMicroelectronics PTE Ltd, STMicroelectronics, Inc.Inventors: Ting Fang Lim, Chengyu Niu, Olivier Le Neel, Calvin Leung
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Patent number: 8402191Abstract: System and method for virtualization of computing elements. A hypervisor provides virtualization of one or more peripherals for one or more computing elements. The hypervisor may further allow separate instances of an operating system to be suspended on one computing element to allow another application to be processed by replacing the state information of the computing element. The suspended instance may be resumed on the same or a different computing element.Type: GrantFiled: December 30, 2010Date of Patent: March 19, 2013Assignee: STMicroelectronics, Inc.Inventors: Kurt Godwin, Shaun McMaster
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Patent number: 8401063Abstract: A decision feedback equalizer includes a correction circuit to correct a sampled value of an incoming bit based on intersymbol interference of at least one preceding bit, and to generate a received bit. The correction circuit includes a first multiplexer and a first pair of latches coupled thereto. The first multiplexer is controlled by a clock signal to generate a digital level representative of a sign of a first correction coefficient to be subtracted from the sampled value of the incoming bit for deleting the intersymbol interference. The first pair of latches receives as input the received bit and is clocked in phase opposition by the clock signal to generate respective latched replicas of the received bit during respective active phases of the clock signal. The respective latched replicas are input to the first multiplexer.Type: GrantFiled: April 7, 2009Date of Patent: March 19, 2013Assignee: STMicroelectronics S.R.L.Inventors: Simone Erba, Massimo Pozzoni
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Patent number: 8400132Abstract: A circuit may generate a clock signal with a variable period given by a ratio between an initial switching period and a number of phase circuits through which a current of a multi-phase PWM voltage converter flows. The circuit may include an adjustable current generator driven by a signal representing the number of phase circuits through which the current flows and configured to generate a current proportional to the number of phase circuits through which the current flows, and a tank capacitor charged by the adjustable current generator. The circuit may include a comparator of a voltage on the tank capacitor with a threshold value configured to generate a pulse of the clock signal when the threshold value is attained, and a discharge path of the tank capacitor, the discharge path being enabled during the pulses of the clock signal.Type: GrantFiled: August 22, 2012Date of Patent: March 19, 2013Assignee: STMicroelectronics S.R.L.Inventors: Osvaldo Enrico Zambetti, Daniele Giorgetti
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Patent number: RE44101Abstract: A fluorescent lamp assembly includes a fluorescent lamp ballast capable of detecting at least one of a plurality of input signals and generating an output signal. The output signal is associated with a power level that is based on the at least one detected input signal. The fluorescent lamp assembly also includes a fluorescent lamp capable of receiving the output signal and generating light. An intensity of the light is based on the power level associated with the output signal.Type: GrantFiled: March 31, 2011Date of Patent: March 26, 2013Assignee: STMicroelectronics, Inc.Inventor: Thomas L. Hopkins