Patents Assigned to STMicroelectronics
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Publication number: 20130169696Abstract: A display panel comprises an array of light elements arranged in n rows by m columns. At least one driver is configured to drive one of said columns and rows, wherein the or each driver is configured to drive each of said columns or said rows. A plurality of the display panels may be used together to form a display panel system.Type: ApplicationFiled: December 7, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS INTERNATIONAL N.V.Inventor: STMICROELECTRONICS INTERNATIONAL N.V.
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Publication number: 20130169344Abstract: A drive circuit includes a switching transistor having a design maximum voltage V2 and a cascode transistor having a design maximum voltage V1, wherein the cascode transistor is source-drain coupled in series with the switching transistor. The circuit further includes a current source coupled between an intermediate voltage node and a gate of the cascode transistor. If the drive circuit is a low side driver, the intermediate voltage node receives an intermediate voltage Vmed set below a high supply voltage Vhigh and that meets the following conditions: a) Vmed<=V2 and b) Vhigh?Vmed<=V1. If the drive circuit is a high side driver, the intermediate voltage node receives an intermediate voltage Vmed set below the high supply voltage and that mees the following conditions: a) Vmed<=V1 and b) Vhigh?Vmed<=V2. The circuit may be configured as a push pull driver by coupling a high side driver and low side driver in series.Type: ApplicationFiled: October 23, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS R&D (SHANGHAI) CO. LTD.Inventor: STMicroelectronics R&D (Shanghai) Co. Ltd.
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Publication number: 20130169259Abstract: In accordance with an embodiment, a reference voltage generator includes a first current generator and a second current generator. The first current generator is configured to produce a first current proportional to a current through a first diode connected in series with the first resistance coupled between a first voltage and a second voltage, such that the first current is produced according to a first proportionality constant. The second current generator is configured to produce a second current proportional to a current through a second diode connected in series with the second resistance coupled between the first voltage and the second voltage, such that the second current is produced according to a second proportionality constant. The reference voltage generator further includes a reference resistor coupled to the first and second current generators and to and output of the reference voltage generator.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMicroelectronics PVT LTD (INDIA)Inventors: Saurabh Saxena, Vivek Verma
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Publication number: 20130169454Abstract: In accordance with an embodiment, a method of performing a successive approximation analog-to-digital (A/D) conversion includes determining a voltage range of an analog input voltage in a single cycle using a multi-bit flash A/D converter, determining an initial D/A value for a successive approximation based on determining the voltage range, and successively approximating the analog input voltage. Successively approximating includes providing the initial D/A value to a D/A converter, comparing an output of the D/A converter with the analog input voltage, and determining a further D/A value based on the comparing.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMicroelectronics PVT LTD (INDIA)Inventors: Chandrajit Debnath, Mohit Kaushik
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Publication number: 20130169311Abstract: An embodiment of a buffer for a transmission line, a circuit including such a buffer, a high-speed data link, and a low-voltage differential signaling (LVDS) system.Type: ApplicationFiled: November 13, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS INTERNATIONAL N.V.Inventor: STMicroelectronics International N.V.
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Publication number: 20130169360Abstract: According to an embodiment, an apparatus includes: a first node configured to receive a data input signal of a data latch; a second node configured to receive a data output signal of the data latch; process and hold circuitry configured to process a difference between a value of the data input signal received at the first node and a value of the data output signal received at the second node and hold respective values at the first and second nodes responsive to the difference; and comparison circuitry configured to compare the value held at the first node and a value of the data output signal of the data latch; wherein the process and hold circuitry is configured to be biased toward the signal received at one of the first node and the second node.Type: ApplicationFiled: December 30, 2011Publication date: July 4, 2013Applicant: STMICROELECTRONICS PVT. LTD.Inventors: Navneet GUPTA, Prashant DUBEY, Kaushik SAHA, AtulKumar KASHYAP
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Publication number: 20130170081Abstract: A circuit includes a discharge arrangement configured to discharge an electrostatic charge. The discharge arrangement has a discharge state. A first circuit is configured to provide a pulse to the discharge arrangement when the electrostatic charge is sensed. The pulse causes the discharge arrangement to enter the discharge state. A second circuit is configured to maintain the discharge arrangement in the discharge state after the pulse has ended. A third circuit is configured to receive the pulse and to provide a delayed output to the discharge arrangement. The delayed output causes the discharge arrangement to exit the discharge state.Type: ApplicationFiled: September 25, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS PVT LTDInventor: STMICROELECTRONICS PVT LTD
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Publication number: 20130169295Abstract: Circuitry is described for compensating leakage currents in capacitive sensing circuits. A single active leakage compensation circuit may sense a representative leakage current and drive a plurality of output transistors, each of which provides a compensating current to a respective capacitive sensing circuit. The leakage compensation circuit may sense current flow through a device substantially equivalent to a device exhibiting leakage current in a capacitive sensing circuit, and in response, provide a signal to drive one or more output transistors to supply approximately equivalent currents to a plurality of circuit nodes. For embodiments having multiple similar capacitive sensors and capacitive sensing circuits, only one transistor need be added to each capacitive sensing circuit to compensate for leakage current.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMicroelectronics Asia Pacific Pte. Ltd.Inventors: Chee Weng Cheong, Yannick Guedon
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Publication number: 20130169248Abstract: A constant-frequency current-mode-controlled boost converter circuit provides slope compensation of an inductor current, reduces reverse inductor current in light output load conditions, and reduces oscillation between a discontinuous current mode and a continuous current mode by enabling or disabling an inductor current threshold. The constant-frequency current-mode-controlled boost converter circuit is efficient and stable in light, medium, and heavy output load conditions.Type: ApplicationFiled: October 24, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD.Inventor: STMICROELECTRONICS (SHENZHEN) R&D CO.
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Publication number: 20130169610Abstract: A driving circuit includes a controller, a converter and a feedback module. The controller receives an input supply at a supply node, and generates a control signal according to the input supply. The converter receive an input signal at an input node and a control signal at a control node, and is configured to convert the input signal to a driving signal in response to the control signal. The driving signal of the converter is feedback by the feedback module to the controller. The input supply is generated from the input signal or the feedback driving signal. The drive circuit may drive a display device.Type: ApplicationFiled: October 10, 2012Publication date: July 4, 2013Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.Inventor: STMicroelectronics (Shenzhen) R&D Co. Ltd.
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Publication number: 20130170306Abstract: An embodiment of a sense amplifier includes a sense circuit and a monitor circuit. The sense circuit is configured to convert a first signal that corresponds to data stored in a memory cell into a second signal that corresponds to the data, and the monitor circuit is configured to indicate a reliability of the second signal. The monitor circuit allows, for example, adjusting a parameter of a memory in which the memory cell is disposed to increase the read accuracy, and may also allow recognizing and correcting an error due to an invalid second signal.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMICROELECTRONICS PVT. LTD.Inventors: Navneet GUPTA, Prashant DUBEY, ShaileshKumar PATHAK, Kaushik SAHA, Ashish KUMAR, R Sai KRISHNA
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Publication number: 20130168377Abstract: An adapter is provided for fluidly coupling a process chamber, such as a diffusion furnace or a process tube, and a fluid source, such as a torch chamber or combustion chamber, of a system for processing semiconductor material. The process tube and the torch chamber include joint segments that can engage directly together to fluidly couple the torch chamber to the process tube for introducing a fluid, such as an oxidizing gas or vapor, into the process tube. The process chamber and the torch chamber are formed of materials having different rates of thermal expansion. The adapter is configured to couple the joint segments of the torch chamber and the process tube while accommodating the differences in thermal expansion between the materials. The adapter may be formed of quartz to couple a quartz torch chamber with a silicon carbide process tube.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMicroelectronics Pte Ltd.Inventors: Ying Shun Liang, Samuel Gordon McKee
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Publication number: 20130168815Abstract: The present disclosure is directed to a device and a method for forming a precision temperature sensor switch with a Wheatstone bridge configuration of four resistors and a comparator. When the temperature sensor detects a temperature above a threshold, the switch will change states. The four resistors in the Wheatstone bridge have the same resistance, with three of the resistors having a low temperature coefficient of resistance and the fourth resistor having a high temperature coefficient of resistance. As the temperature increases, the resistance of the fourth resistor will change. The change in resistance of the fourth resistor will change a voltage across the bridge. The voltage across the bridge is coupled to the comparator and compares the voltage with the threshold temperature, such that when the threshold temperature is exceeded, the comparator switches the output off.Type: ApplicationFiled: December 30, 2011Publication date: July 4, 2013Applicant: STMicroelectronics Pte Ltd.Inventors: Olivier Le Neel, Ravi Shankar
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Publication number: 20130170164Abstract: On a circuit substrate on which an adhesive is used to couple electronic or structural components to the substrate, an adhesive dam is positioned to prevent the adhesive from interfering with the operation of the circuit. A contact pad can be provided at a selected location and with a selected shape, and solder deposited on the pad, then reflowed to form the dam. The dam can be a structure soldered to a contact pad, or the dam can be supported at its ends by another structure of the device, so that, at the location where it functions to contain the adhesive, it is not attached to the substrate.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMICROELECTRONICS PTE LTD.Inventors: Jing-En Luan, Hk Looi
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Publication number: 20130170275Abstract: A dual port SRAM has two data storage nodes, a true data and complementary data. A first pull down transistor has an active are that forms the drain region of the first transistor and the true data storage node that is physically isolated from all other transistor active areas of the memory cell. A second pull down transistor has an active area that form the drain region of a second transistor that is the complementary data node that is physically isolated from all other transistor active areas of the memory cell.Type: ApplicationFiled: August 22, 2012Publication date: July 4, 2013Applicant: STMicroelectronics Pvt. Ltd.Inventors: Shishir Kumar, Dibya Dipti, Pierre Malinge
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Publication number: 20130169798Abstract: A device for detecting objects includes a vessel intended to contain the objects. A sensor is configured to capture at least one image of the vessel. A processing device is configured to process at least one captured image by detecting objects of the at least one captured image, extracting characteristics of each detected object, and generating a list of the characteristics of each detected object. A memory stores the generated list, the memory also configured to store a first reference list of object characteristics. The processing device further generates a second list of characteristics from a captured image. The characteristics of each object of the second list are compared with, respectively, the characteristics of each object of the reference list.Type: ApplicationFiled: July 11, 2011Publication date: July 4, 2013Applicant: STMICROELECTRONICS (GRENOBLE 2) SASInventors: Florent Pellerin, Jacques Dumarest
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Publication number: 20130167643Abstract: A method determines a resonance frequency of a resonant device. The method includes stimulating the resonant device with a periodic input signal having a frequency in a frequency interval; determining a frequency value for said periodic input signal in said frequency interval for which a phase-difference between said periodic input signal and a corresponding periodic output signal of the resonant device is minimum; generating a flag indicating that a resonance frequency has been determined; and generating signals representing said resonance frequency as a value of the frequency of said periodic input signal.Type: ApplicationFiled: December 20, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS S.R.L.Inventor: STMicroelectronics S.r.l.
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Publication number: 20130169318Abstract: A high side driver circuit includes a driver stage having an input, an output, a first power terminal and a second power terminal, a transistor having a first power terminal, a second power terminal, and a control terminal coupled to the output of the driver stage, and a switch coupled between the second power terminal of the driver stage and the second power terminal of the transistor.Type: ApplicationFiled: December 7, 2012Publication date: July 4, 2013Applicant: Stmicroelectronics (Shenzhen) R&D Co. Ltd.Inventor: Stmicroelectronics (Shenzhen) R&D Co. Ltd.
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Publication number: 20130170520Abstract: An integrated temperature sensor provides an output current proportional to temperature rising from a zero value at a selectable reference temperature. The reference temperature can be selected by varying resistive values in the sensor's circuit. The temperature sensor can be manufactured at low cost and fully integrated on a chip using CMOS technology, and may be used for low-power applications.Type: ApplicationFiled: December 29, 2011Publication date: July 4, 2013Applicant: STMicroelectronics Asia Pacific Pte. Ltd.Inventors: Mukesh Rao Englasyam, Yann Desprez-Le-Goarant
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Publication number: 20130169302Abstract: High precision connectivity for a device under test (DUT) in an electronic test system at reduced cost and superior performance characteristics is provided by incorporating an appropriate contact structure into a printed circuit board (PCB) of the electronic test system. Alternatively, a superior adapter that is formed on the basis of highly precise volume production techniques, for example using well-established semiconductor materials and related manufacturing techniques, is provided to support high precision connectivity.Type: ApplicationFiled: December 14, 2012Publication date: July 4, 2013Applicant: STMICROELECTRONICS S.R.L.Inventor: STMicroelectronics S.r.I.