Abstract: A method calculates statistical parameters in function of stochastic momentums of the pixel intensities of a same primary color or complementary hue of a first working window (2k+1)×(2k+1), and of at least a second working window of smaller size, both centered on the pixel to be filtered and in choosing, as a function of the values of these statistical parameters, for each pixel of the color image to be filtered, the most appropriate filtering algorithm for enhancing as much as possible the contour sharpness and reducing noise and artifacts.
Type:
Grant
Filed:
July 2, 2008
Date of Patent:
March 27, 2012
Assignee:
STMicroelectronics S.r.l.
Inventors:
Mirko Ignazio Guarnera, Valeria Tomaselli, Giuseppe Messina
Abstract: Herein described is a control device of a device for the correction of the power factor in forced switching power supplies; said device for the correction of the power factor comprises a converter and said control device is coupled to the converter to obtain from an alternating input line voltage a regulated output voltage. The control device comprises generating means associated to a capacitor for generating a signal representative of the root-mean-square value of the alternating line voltage; the generating means are associated to means for discharging said capacitor. The control device comprises further means for discharging the capacitor suitable for discharging said capacitor when the signal representative of the root-mean-square value of the alternating line voltage goes below a given value.
Abstract: A method for protecting an execution, by an integrated circuit, of a ciphering and/or deciphering algorithm taking into account data and at least one valid key and performing several iterations of the same calculation, including at least one execution of an iteration with the valid key between several executions of the same iteration with the invalid keys obtained by applying at least one non-linear one-way function to the valid key.
Abstract: A device for producing energy for portable applications including at least one micro fuel cell and a microreactor, having a reaction chamber including a catalyst, for producing hydrogen gas to be fed to the micro fuel cell. The microreactor includes at least one substrate of a composite material for making printed circuits micromachined with printed circuit technology suitable for making the reaction chamber and having a semipermeable membrane on top of it. The substrate and the membrane are connected to the micro fuel cell to make a single body through a single pressure assembly step.
Type:
Grant
Filed:
April 7, 2009
Date of Patent:
March 27, 2012
Assignee:
STMicroelectronics S.R.L.
Inventors:
Giuseppe Emanuele Spoto, Cristian Dall'oglio, Giuseppe Antonio Maria Nastasi, Salvatore Abbisso, Roberta Zito, Andrea Lazzara, Salvatore Leonardi, Roberta Giuffrida
Abstract: Described herein is an optically controlled electrical-switch device which includes a first current-conduction terminal and a second current-conduction terminal, and a carbon nanotube connected between the first and the second current-conduction terminals, the carbon nanotube being designed to be impinged upon by electromagnetic radiation and having an electrical conductivity that can be varied by varying the polarization of the electromagnetic radiation incident thereon. In particular, the carbon nanotube may for example, in given conditions of electrical biasing, present a high electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially parallel to the axis of the carbon nanotube itself, and a reduced electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially orthogonal to the axis of the carbon nanotube itself.
Type:
Grant
Filed:
April 8, 2011
Date of Patent:
March 27, 2012
Assignee:
STMicroelectronics S.r.l.
Inventors:
Michele Portico Ambrosio, Maria Grazia Maglione, Maria Fortuna Bevilacqua, Luigi Occhipinti, Salvatore Coffa, Salvatore Castorina
Abstract: An EEPROM memory cell that includes a dual-gate MOS transistor in which the two gates are separated by an insulation layer, wherein the insulation layer includes a first portion and a second portion having lower insulation properties than the first one, the second portion being located at least partially above a channel area of the transistor.
Abstract: A multi-pixel photodetector array may include a semiconductor substrate having a back side and a front side, Geiger mode avalanche photodiodes (GM-APDs) on the semiconductor substrate, each including an anode contact, and a common cathode for the GM-APDs and having a first connection lead on the backside of the semiconductor substrate. The multi-pixel photodetector array may include a second connection lead, and a common anode on the front side of the semiconductor substrate and configured to couple in common the anode contacts of the GM-APDs to the second connection lead. Each GM-APD may be configured to generate, when a photon impinges thereon, a current pulse of different shape for discrimination by an external circuit connected to the common cathode and the common anode.
Type:
Application
Filed:
September 15, 2011
Publication date:
March 22, 2012
Applicant:
STMicroelectronics S.r.I.
Inventors:
Massimo Cataldo MAZZILLO, Delfo Nunziato Sanfilippo, Giovanni Condorelli
Abstract: A bidirectional protection component formed in a semiconductor substrate of a first conductivity type including a first implanted area of the first conductivity type, an epitaxial layer of the second conductivity type on the substrate and the first implanted area, a second area of the first conductivity type on the external side of the epitaxial layer, in front of the first area, and implanted with the same dose as the first area, a first metallization covering the entire lower surface of the substrate, and a second metallization covering the second area.
Abstract: A sensing structure for use in testing integrated circuits on a substrate. The sensing structure includes at least two sensing regions connectable to a probe and at least one first sensing element. Each of the at least one first sensing elements is directly connected to two sensing regions such that for each sensing region a different value of an electrical parameter is measurable between the sensing region and a first reference potential so as to reliably determine a drift direction of a probe.
Abstract: A biological molecule detection device that includes a detection array, arranged on a body and having one or more probes for detecting corresponding electrically charged molecules, wherein a time varying electric field generating circuit is provided for generating at least one time varying electric field around the detection array within the detection region. The time varying electric field moves the electrical charged molecules repeatedly back and forth over the probes, thus providing increased opportunities for interaction and speeding the detection process.
Abstract: A device for controlling an electroluminescent matrix display by successive selection of its lines, including a column control circuit having circuitry capable of placing, at the beginning of the selection of a line, the display column at a precharge voltage based on the operating voltage of the previous line, the column control circuit also having circuitry capable of modifying the precharge voltage according to the difference between luminance instructions of the previous line and those of the selected line.
Abstract: A method for encoding video signals subjects the signals to unbalanced multiple description coding. The unbalanced multiple description coding codes a video signal in a first high resolution packet and a second low resolution packet and represents, respectively a first high resolution description and a second low resolution description. The unbalanced multiple description coding step includes using different intra refresh periods for the first and second high resolution descriptions, with an intra refresh period for the second low resolution description shorter than the intra refresh period of the first high resolution description.
Abstract: A user controlled device, movable into a plurality of positions of a three-dimensional space, includes a MEMS acceleration sensor to detect 3D movements of the user controlled device. The device, such as a mouse, sends control signals correlated to the detected positions to an electrical appliance, such as a computer system. A microcontroller processes the output signals of the MEMS acceleration sensor to generate the control signals, such as screen pointer position signals and “clicking” functions.
Type:
Grant
Filed:
October 14, 2003
Date of Patent:
March 20, 2012
Assignees:
STMicroelectronics S.r.l., STMicroelectronics Asia Pacific Pte Ltd.
Inventors:
Giuseppe Calarco, Jean Nguyen, Guy Formica, Stephane Gervais-Ducouret, Fabio Pasolini, Paolo Bendiscioli
Abstract: A pulse generator circuit is provided. The pulse generator circuit has an input adapted to receive an input electrical quantity and an output at which an output electrical quantity is made available. A transfer characteristic establishes a relationship between said input and said output electrical quantities. The pulse generator circuit is adapted to provide said output electrical quantity in the form of pulses having a predetermined shape, suitable to be used for UWB transmission. The transfer characteristic has substantially a same shape as that of said pulses. Moreover, a UWB modulating system exploiting the novel pulse generator is proposed.
Type:
Grant
Filed:
December 6, 2010
Date of Patent:
March 20, 2012
Assignee:
STMicroelectronics S.r.l.
Inventors:
Marco Orazio Cavallaro, Tino Copani, Giovanni Girlando, Giuseppe Palmisano
Abstract: A memory interface module provides interfacing between a host processor with multiple flash memories and parallel interfaces of varying protocols. The interface module includes multiple register files, multiple operation information registers, an internal memory, a flash interface portion, and a finite state machine (FSM). The register files receive a command from the host processor for controlling an operation of multiple flash memories. The operation information registers execute and store the command and operation information. The internal memory receives and stores host data from the host processor. The internal memory further stores flash data extracted from multiple flash memories. The flash interface portion interacts with the memory devices connected to the controller. The FSM extracts the command and the operation information from the register files, which are programmed by the user and controls the control signals of the memory devices connected to the controller through the flash interface.
Abstract: A semiconductor device includes an interconnect having electrically conductive portions and a dielectric layer made of a first dielectric material. A trench is formed in the dielectric layer. The exposed portions of the dielectric layer which form the side walls of the trench are removed. A dielectric liner is then deposited on the side walls of the trench, the liner being made of a second dielectric material.
Abstract: A novel method for introducing delays in self timed memories is disclosed. In the proposed method, delays are introduced by introducing a capacitance on the path of signal to be delayed. The capacitances are realized by using idle lying metal layers in the circuit. The signal to be delayed is connected to these idle lying capacitances via programmable switches. The amount of delay introduced depends on the capacitance introduced in the path of signal which in turn depends on state of the switches. The state of the switches is controlled by delay codes provided externally to the delay introducing circuitry. Since, in the proposed method, idle-lying metal capacitances are utilized, the circuit can be implemented using minimum amount of additional hardware. Also delay provided by the proposed circuitry is a function of memory cell spice characteristics and core parasitic capacitances.
Abstract: A microelectronic device includes a color filter equipped with a plurality of filtering elements, including several filtering elements. The device includes at least one first zone located inside a cavity and includes a first group of filtering elements having a first critical dimension, and at least one second zone at the periphery of the cavity, including a second group of filtering elements having a second critical dimension that is different from the first critical dimension.
Type:
Grant
Filed:
June 8, 2007
Date of Patent:
March 20, 2012
Assignee:
STMicroelectronics SA
Inventors:
Nicolas Hotellier, Cyril Fellous, Christophe Cowache, Yannick Sanchez
Abstract: The control of a plasma display panel, successively comprises, at least for all the cells of a current line having to switch state for the next line: a connection of a terminal of application of an intermediary supply voltage to output terminals of column control stages corresponding to the junction points of first and second switches between two terminals of application of a supply voltage, to perform a precharge or a predischarge of the screen cells; a disconnection of said output terminals from this intermediary voltage; and a connection of each output terminal to a first or to a second power supply voltage by the turning-on of the first or second switch of the corresponding stage, according to a luminance reference value, delayed with respect to the disconnection of the corresponding output terminal from the terminal of application of the intermediary voltage.
Abstract: A method for capturing a sequence of video images, using an imager including an estimation of the parameters of a model of global motion between successive images. The method may include measurement of local motions on edges of the images, with the estimation of the parameters of the global motion model performed using the result of the measurement of local motions on the edges of the images.
Type:
Grant
Filed:
March 9, 2011
Date of Patent:
March 20, 2012
Assignee:
STMicroelectronics S.A.
Inventors:
Fabrice Gensolen, Lionel Martin, Guy Cathebras