Patents Assigned to STMicroelectronics
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Publication number: 20120086608Abstract: Transmission/reception device for signals having a wavelength of the microwaves, millimeter or terahertz type, comprising an antenna array. The antenna array comprises a first group of first omni-directional antennas and a second group of second directional antennas disposed around the first group of antennas.Type: ApplicationFiled: September 23, 2011Publication date: April 12, 2012Applicants: STMicroelectronics (Crolles 2) SAS, STMicroelectronics SAInventors: Andreia Cathelin, Mathieu Egot, Romain Pilard, Daniel Gloria
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Patent number: 8155095Abstract: A WLAN communication system and algorithm that adaptively changes the data transmission rate of a communication channel based on changing channel conditions. The WLAN communication system or algorithm has two modes being a searching mode and a transmission mode. Furthermore, the WLAN communication system or algorithm incorporates an additive increase, multiplicative decrease (AIMD) function into the rate adaptation algorithm.Type: GrantFiled: December 3, 2008Date of Patent: April 10, 2012Assignee: STMicroelectronics Ltd.Inventor: Mounir Hamdi
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Patent number: 8154335Abstract: A system on chip (SoC) has a digital domain. An adaptive voltage/frequency scaling circuit includes a critical path replica circuit with respect to that digital domain. The critical path replica circuit generates a margin signal, and the adaptive voltage scaling circuit responds to the margin signal by decreasing bias voltage (and/or increasing clock frequency) applied to the digital domain of the system on chip so as to recover available margin. A fail-safe timing sensor is included within the digital domain of the system on chip. The timing sensor generates a flag signal when timing criteria within the digital domain are violated. The adaptive voltage scaling circuit responds to the flag signal by increasing the bias voltage (and/or decreasing the clock frequency) applied to the digital domain of the system on chip so as to implement a recovery operation.Type: GrantFiled: September 18, 2009Date of Patent: April 10, 2012Assignee: STMicroelectronics Pvt. Ltd.Inventors: Nitin Chawla, Chittoor Parthasarathy, Kallol Chatterjee, Promod Kumar
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Patent number: 8154307Abstract: An electronic circuit includes several (at least two) oscillating and/or resonant devices. The circuit uses a measuring device to measure the phase noise of one of the two oscillating/resonant devices. This measuring device is integrated on a chip on which the oscillating/resonant device to be measured is also integrated. The circuits and methods described find application in the area of radiofrequency/high frequency electronics RF/HF, in particular adapted to general public applications in mobile communication systems and/or to metrology.Type: GrantFiled: September 18, 2008Date of Patent: April 10, 2012Assignees: STMicroelectronics S.A., Centre National de la Recherche ScientifiqueInventors: Andrea Cathelin, Sylvain Godet, Olivier Llopis, Éric Tournier, Stephane Thuries
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Patent number: 8153474Abstract: A method of manufacturing a protected package assembly: providing a protective modular package cover in accordance with a modular design; selectively applying an adhesive to the cross member of each subassembly receiving section of the protective modular package cover that will receive a subassembly to form an adhesive layer of the protective modular package cover; encapsulating the one or more subassemblies in the subassembly receiving sections on the selectively applied adhesive layer to generate a protected package assembly; and controlling application of a distributed downward clamping force applied to the top surfaces of the subassemblies received by the protective modular package cover and useful for mounting the protected package assembly to a core through activation of fastener elements and cross members of the subassembly receiving sections.Type: GrantFiled: October 13, 2010Date of Patent: April 10, 2012Assignee: STMicroelectronics, Inc.Inventors: Craig J. Rotay, John Ni, David Lam, David Lee DeWire, John W. Roman, Richard J. Ross
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Patent number: 8154911Abstract: A memory device includes bitlines, wordlines and a matrix of memory cells arranged in rows and columns. Each of the bitlines is electrically connected to memory cells in one of the columns. Each of the wordlines is electrically connected to memory cells in one of the rows. A bitline write voltage is applied to a first bitline. A wordline voltage is applied to a first wordline for writing data to a first memory cell connected to the first wordline and the first bitline. The first bitline and the second bitline are electrically connected for charge sharing between the first bitline and the second bitline. A predetermined time after electrically connecting the first bitline and the second bitline, the first and the second bitline are electrically disconnected and the bitline write voltage is applied to the second bitline. The wordline voltage is applied to a second wordline for writing data to a second memory cell connected to the second wordline and the second bitline.Type: GrantFiled: April 19, 2010Date of Patent: April 10, 2012Assignee: STMicroelectronics Pvt. Ltd.Inventors: Naveen Batra, Rajiv Kumar, Saurabh Agrawal
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Patent number: 8154172Abstract: The invention relates to a circuit for highly efficient driving of piezoelectric loads, comprising a linear driving circuit portion connected to the load through an inductive-resistive connection whereto a voltage waveform is applied. Advantageously, the circuit comprises further respective circuit portions, structurally independent, connected in turn to the inductive-resistive connection through respective inductors to supply a considerable fraction of the overall current required by the load in the transient and steady state respectively.Type: GrantFiled: April 21, 2006Date of Patent: April 10, 2012Assignee: STMicroelectronics S.r.l.Inventors: Luca Battaglin, Pietro Gallina, Giancarlo Saba, Giancarlo Zinco, Claudio Diazzi, Vittorio Peduto
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Patent number: 8154332Abstract: A current-controlled resistor comprises a first input terminal configured to receive an input signal and a second input terminal configured to receive a current control signal. The resistor comprises a first stage configured to receive the current control signal; the first stage includes first and second PN diodes having first terminals of a first type and second terminals of a second type. The first terminals of the first and second PN diodes are coupled each other and a second terminal of the first PN diode is coupled to the first input terminal. The resistor comprises a second stage configured to receive the current control signal; the second stage includes a third PN diode having first and second terminals of the first and second types, the second terminal of the third PN diode being coupled to the second terminal of the second PN diode.Type: GrantFiled: October 30, 2009Date of Patent: April 10, 2012Assignee: STMicroelectronics Design and Application GmbHInventor: Sebastian Zeller
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Patent number: 8153947Abstract: An image sensor formed of an array of pixels, each pixel including a photodiode coupled between a first reference voltage and a first switch, the first switch being operable to connect the photodiode to a first node; a capacitor arranged to store a charge accumulated by the photodiode, the capacitor being coupled between a second reference voltage and a second node; a second switch coupled between the first and second nodes, the second switch being operable to connect the capacitor to the first node; and read circuitry coupled for reading the voltage at the second node.Type: GrantFiled: January 8, 2009Date of Patent: April 10, 2012Assignee: STMicroelectronics S.A.Inventors: Frédéric Barbier, Yvon Cazaux
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Patent number: 8156238Abstract: Apparatus and methods for wireless data transmission in a multimedia network are disclosed. Disclosed is a network having a source coupled to a sink using a virtual channel that includes a wireless communication channel. A source end of the system provides a packetizing data stream having a stream of payloads such that each payload is associated with its respective originating source stream. The system configured to encode the packetized data stream for wireless transport. A non-wireless source end of the system receives quality of service information from downstream. Thereby enabling adjustments to the source content and packetized data streams.Type: GrantFiled: April 26, 2010Date of Patent: April 10, 2012Assignee: STMicroelectronics, Inc.Inventor: Osamu Kobayashi
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Patent number: 8154936Abstract: A single-ended bit line based storage system. The storage system includes a first set of storage cells, a second set of storage cells, a first set of reference storage cells, a second set of reference storage cells, and a differential sensing block. The memory core is split vertically in half vertically to form the first set of storage cells and the second set of storage cells. The first set of reference storage cells provides a discharge rate lower than the discharge rate of said first set and second set of storage cells for storing data. The second set of reference storage cells provides a discharge rate lower than the discharge rate of said first set and second set of storage cells for storing data. The differential sensing block is coupled to the first set of storage cells and the second set of storage cells for generating an output data signal on receiving a control signal.Type: GrantFiled: December 30, 2008Date of Patent: April 10, 2012Assignee: STMicroelectronics Pvt. Ltd.Inventor: Kedar Janardan Dhori
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Patent number: 8154265Abstract: A low-dropout linear regulator includes an error amplifier which includes a cascaded arrangement of a differential amplifier and a gain stage. The gain stage includes a transistor driven by the differential amplifier to produce at a drive signal for an output stage of the regulator. The transistor is interposed over its source-drain line between a first resistive load included in a RC network creating a zero in the open loop gain of the regulator, and a second resistive load to produce a drive signal for the output stage of the regulator. The second resistive load is a non-linear compensation element to render current consumption linearly proportional to the load current to the regulator. The first resistive load is a non-linear element causing the frequency of said zero created by the RC network to decrease as the load current of the regulator decreases.Type: GrantFiled: November 18, 2009Date of Patent: April 10, 2012Assignee: STMicroelectronics Design and Application S.R.O.Inventor: Karel Napravnik
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Publication number: 20120081090Abstract: The voltage regulators are capable of limiting undershoots of the output voltage without having a similar effect on overshoots because of the presence of a current cancellation network, input with the reference voltage and coupled to the second input of the error amplifier. This current cancellation network is adapted to inject into the second input a unidirectional compensation current of the first and second currents injected by the first and second feedback networks, respectively, the compensation current being determined by time variations of the difference between a replica of the output regulated voltage and the reference voltage and/or by time variations of the reference voltage.Type: ApplicationFiled: September 21, 2011Publication date: April 5, 2012Applicant: STMicroelectronics S.r.I.Inventors: Alessandro ZAFARANA, Osvaldo Enrico Zambetti
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Publication number: 20120080758Abstract: At least three metal-oxide semiconductor transistors with different threshold voltages are formed in and above corresponding first, second and third parts of a semiconductor substrate. The second transistor has a lower threshold voltage than the second transistor, and the third transistor has a lower threshold voltage than the second transistor. The gate oxide layers for the three transistors are formed as follows: a first oxide layer having a first thickness is formed above the first, second and third parts. The first oxide layer above the second part is etched and a second oxide layer having a second thickness smaller than the first thickness is formed. The first oxide layer above the third part is etched and a third oxide layer having a third thickness smaller than the second thickness is formed. The second and the third oxide layers are then nitrided to form first and second oxy-nitride layers.Type: ApplicationFiled: October 4, 2010Publication date: April 5, 2012Applicant: STMicroelectronics, Inc.Inventor: Franck Arnaud
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Publication number: 20120083110Abstract: A method for manufacturing three types of MOS transistors in three regions of a same substrate, including the steps of: forming a first insulating layer, removing the first insulating layer from the first and second regions, forming a silicon oxide layer, depositing an insulating layer having a dielectric constant which is at least twice greater than that of silicon oxide, depositing a first conductive oxygen scavenging layer, removing the first conductive layer from the second and third regions, and annealing.Type: ApplicationFiled: September 20, 2011Publication date: April 5, 2012Applicant: STMicroelectronics (Crolles 2) SASInventors: Jean-Luc Huguenin, Grégory Bidal
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Publication number: 20120081978Abstract: A read boost circuit arranged to boost the voltage difference between a pair of complementary bit lines of a memory device during a read operation, the read boost circuit including: a first transistor adapted to be controlled by the voltage level on a first bit line of the pair of bit lines to couple a second bit line of the pair of bit lines to a first supply voltage; and a second transistor connected directly to ground and adapted to be controlled by the voltage level on the second bit line to couple the first bit line to ground.Type: ApplicationFiled: September 22, 2011Publication date: April 5, 2012Applicants: STMicroelectronics S.A., Centre National de la Recherche Scientifique, STMicroelectronics Crolles 2 SASInventors: Fady Abouzeid, Sylvain Clerc, Philippe Roche
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Patent number: 8149322Abstract: An image sensor having a surface intended to be illuminated and pixels, each pixel including a photosensitive area formed in an active area of the substrate, at least one first pixel including a first microlens located on the surface, the sensor including at least one second pixel including a transparent portion forming a pedestal located at least partly on the surface and a second microlens at least partially covering the pedestal.Type: GrantFiled: March 27, 2009Date of Patent: April 3, 2012Assignee: STMicroelectronics S.A.Inventor: Jérôme Vaillant
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Patent number: 8150315Abstract: A method for verifying alignment between first and second integrated devices coupled together using a reference and a coupling capacitor, including: transmitting a reference signal on a transmission electrode of the reference capacitor; receiving a coupling signal on a reception electrode of the reference capacitor; amplifying the coupling signal, generating a reception reference signal; generating a reception control signal as a function of the reception reference signal; transmitting a communication signal on an electrode of the coupling capacitor; receiving a reception signal on an electrode of the coupling capacitor; amplifying the reception signal, generating a first compensated signal; controlling a level of amplification of amplifying the coupling signal and the reception signal as a function of the reception control signal; and detecting a possible misalignment between the first and second devices based on an amplitude of the communication signal and an amplitude of the compensated signal.Type: GrantFiled: June 29, 2010Date of Patent: April 3, 2012Assignee: STMicroelectronics S.r.l.Inventors: Roberto Canegallo, Mauro Scandiuzzo, Eleonora Franchi Scarselli, Antonio Gnudi, Roberto Guerrieri
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Patent number: 8148707Abstract: A chalcogenide alloy that optimizes operating parameters of an ovonic threshold switch includes an atomic percentage of arsenic in the range of 9 to 39, an atomic percentage of germanium in the range of 10 and 40, an atomic percentage of silicon in the range of 5 and 18, an atomic percentage of nitrogen in the range of 0 and 10, and an alloy of sulfur, selenium, and tellurium. A ratio of sulfur to selenium in the range of 0.25 and 4, and a ration of sulfur to tellurium in the alloy of sulfur, selenium, and tellurium is in the range of 0.11 and 1.Type: GrantFiled: December 14, 2009Date of Patent: April 3, 2012Assignee: STMicroelectronics S.r.l.Inventors: Stanford Ovshinsky, Tyler Lowrey, James D. Reed, Semyon D. Savransky, Jason S. Reid, Kuo-Wei Chang
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Patent number: 8148748Abstract: An Adjustable Field Effect Rectifier uses aspects of MOSFET structure together with an adjustment pocket or region to result in a device that functions reliably and efficiently at high voltages without significant negative resistance, while also permitting fast recovery and operation at high frequency without large electromagnetic interference.Type: GrantFiled: September 25, 2008Date of Patent: April 3, 2012Assignee: STMicroelectronics N.V.Inventors: Alexei Ankoudinov, Vladimir Rodov