Presti
Armando Presti, Acireale IT
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20140300331 | Systems and Methods to Control DC/DC Multiphase Switching Regulators - Various embodiments of the invention provide extend the switching frequency range of DC/DC multiphase switching regulators in order to overcome prior art frequency limitations in the number of available phases, for example, in low input to output ratio applications. In certain embodiments, this is accomplished by enabling partial overlap between multiple phases using asynchronous logic. The invention is easily scalable without introducing significant silicon area penalties. | 10-09-2014 |
Calogero Presti, San Diego, CA US
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20150244322 | BIAS CIRCUITS AND METHODS FOR STACKED DEVICES - Embodiments of the present disclosure include a bias circuit for generating bias voltages to stacked transistors. In one embodiment, stacked transistors are coupled between an input transistor and an output node. A modulated power supply voltage and an input signal produce a voltage at the output node. The modulated power supply voltage is provided as an input to the bias circuit. Bias voltages are generated that change with the power supply voltage. In one embodiment, particular transistors in the stack are biased so that their control terminals are effectively short circuited when the power supply voltage is reduced. | 08-27-2015 |
Calogero D. Presti, San Diego, CA US
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20120268205 | RF POWER AMPLIFIERS WITH IMPROVED EFFICIENCY AND OUTPUT POWER - Amplifiers with improved efficiency and output power are described. In an exemplary design, an apparatus includes an amplifier having at least three transistors and at least two capacitors. The at least three transistors are coupled in a stack and receive and amplify an input signal and provide an output signal. The at least two capacitors include at least one capacitor coupled between the drain and source of an associated transistor for each of at least two transistors in the stack, e.g., at least one capacitor for each transistor in the stack except for the bottommost transistor in the stack. The at least two capacitors recycle energy from gate-to-source parasitic capacitors of the at least two transistors to the output signal, which improves efficiency and output power of the amplifier. | 10-25-2012 |
20130187712 | IMPEDANCE MATCHING CIRCUIT WITH TUNABLE NOTCH FILTERS FOR POWER AMPLIFIER - An impedance matching circuit with at least one tunable notch filter for a power amplifier is disclosed. The power amplifier amplifies an input radio frequency (RF) signal and provides an amplified RF signal. The impedance matching circuit performs output impedance matching for the power amplifier and includes at least one tunable notch filter. Each tunable notch filter has a notch that can be varied in frequency to provide better attenuation of an undesired signal. The at least one tunable notch filter attenuates at least one undesired signal in the amplified RF signal. The at least one tunable notch filter may include (i) a first tunable notch filter to attenuate a first undesired signal at a second harmonic of the amplified RF signal and/or (ii) a second tunable notch filter to attenuate a second undesired signal at a third harmonic of the amplified RF signal. | 07-25-2013 |
20130194054 | COMBINED DIRECTIONAL COUPLER AND IMPEDANCE MATCHING CIRCUIT - An output circuit with an integrated directional coupler and impedance matching circuit is disclosed. In an exemplary design, an apparatus includes a switchplexer and an output circuit. The switchplexer is coupled to at least one power amplifier. The output circuit is coupled to the switchplexer and a load (e.g., an antenna) and includes a directional coupler and an impedance matching circuit sharing at least one inductor. The output circuit performs impedance matching for the load. The output circuit also acts as a directional coupler and provides an input radio frequency (RF) signal as an output RF signal and further couples a portion of the input RF signal as a coupled RF signal. Reusing the at least one inductor for both the directional coupler and the impedance matching circuit may reduce circuitry, size, and cost of the wireless device and may also improve performance. | 08-01-2013 |
20130207732 | AMPLIFIER WITH REDUCED SOURCE DEGENERATION INDUCTANCE - Techniques for reducing undesired source degeneration inductance are disclosed. In an exemplary design, an apparatus includes first and second connections. The first connection includes a first parasitic inductance acting as a source degeneration inductance of an amplifier. The second connection includes a second parasitic inductance magnetically coupled to the first parasitic inductance to reduce the source degeneration inductance of the amplifier. The amplifier (e.g., a single-ended power amplifier) may be coupled to circuit ground via the first connection. An impedance matching circuit may be coupled to the amplifier and may include a circuit component coupled to circuit ground via the second connection. The first connection may be located sufficiently close to (e.g., within a predetermined distance of) the second connection in order to obtain the desired magnetic coupling between the first and second parasitic inductances. | 08-15-2013 |
20130207741 | PROGRAMMABLE DIRECTIONAL COUPLER - A programmable directional coupler to detect incident power and possibly reflected power is disclosed. The programmable directional coupler includes first and second inductors and at least one adjustable capacitor. The first inductor is coupled between first and second nodes, and the second inductor is coupled between third and fourth nodes of the programmable directional coupler. The second inductor is magnetically coupled to the first inductor and has a mutual inductance with the first inductor. The at least one adjustable capacitor is coupled between the first and second inductors. The programmable directional coupler may further include at least one fixed or adjustable capacitor coupled between at least one node among the first, second, third and fourth nodes and circuit ground. The programmable directional coupler may further include an adjustable resistor coupled between the fourth node and circuit ground. | 08-15-2013 |
20130214862 | ADJUSTABLE BYPASS CIRCUIT FOR A SUPPLY VOLTAGE FOR AN AMPLIFIER - Techniques for bypassing a supply voltage for an amplifier are disclosed. In an exemplary design, an apparatus includes an amplifier and an adjustable bypass circuit. The amplifier (e.g., a power amplifier) receives a supply voltage from a supply source. The adjustable bypass circuit is coupled to the supply source and provides bypassing for the supply voltage. The adjustable bypass circuit includes an adjustable capacitor or a fixed capacitor coupled to an adjustable resistor. The supply source may be (i) a power supply source providing a fixed supply voltage for the amplifier or (ii) an envelope tracker providing a variable supply voltage for the amplifier. | 08-22-2013 |
20150042412 | DIRECTIONAL COUPLER CIRCUIT TECHNIQUES - Techniques for efficiently integrating directional coupler circuitry with other circuit elements of an RF front end. In an aspect, one or more inductors of an RF front end filter is incorporated into a first inductor of the directional coupler, and a capacitor is further coupled in parallel with the first inductor. In another aspect, circuitry associated with matching components of the RF front end may further be incorporated into the directional coupler design. Further techniques are provided for coupling directivity tuning elements to a second inductor of the directional coupler to improve the linearity of the coupler over other tuning techniques. | 02-12-2015 |
Calogero Davide Presti, San Diego, CA US
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20150070095 | WIDEBAND BIAS CIRCUITS AND METHODS - The present disclosure includes circuits and methods for wideband biasing. In one embodiment, an amplifiers includes a cascode transistor between an input and an output of the amplifier. The cascode transistor receives a bias from a bias circuit comprising a resistor between the power supply and a first node, a resistor between the first node and a reference voltage, and a capacitor between the power supply and the first node. The power supply may be a modulated power supply, which is coupled through the bias circuit to a capacitance at the control terminal of the cascode transistor. An inductor is configured between a terminal of the cascode transistor and the power supply. The inductor may isolate the output from the modulated supply signal. | 03-12-2015 |
20160056779 | WIDEBAND BIAS CIRCUITS AND METHODS - The present disclosure includes circuits and methods for wideband biasing. In one embodiment, an amplifier includes a cascode transistor between an input and an output of the amplifier. The cascode transistor receives a bias from a bias circuit comprising a resistor between the power supply and a first node, a resistor between the first node and a reference voltage, and a capacitor between the power supply and the first node. The power supply may be a modulated power supply, which is coupled through the bias circuit to a capacitance at the control terminal of the cascode transistor. An inductor is configured between a terminal of the cascode transistor and the power supply. The inductor may isolate the output from the modulated supply signal. | 02-25-2016 |
Calogero Davide Presti, Caltanissetta IT
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20100109789 | Radio frequency amplifier with digital amplitude modulation and method for controlling the delivering of power - A digital amplitude modulator is configured to modulate the amplitude of an input carrier signal based on input digital data and generate a corresponding output signal. The digital amplitude modulator includes a first variable gain amplifier for receiving the input carrier signal and generating a corresponding first amplified carrier signal, a second variable gain amplifier for receiving the input digital data and generating corresponding digital amplitude control data and a plurality of selectively activatable amplifier stages. Each amplifier stage receives a replica of the first amplified carrier signal and generates a corresponding second amplified carrier signal when activated. The output signal corresponds to a combination of the second amplified carrier signals generated by the activated amplifier stages. The digital amplitude modulator further includes a driving circuit configured to receive the digital amplitude control data and activate a corresponding set of selected amplifier stages based on the digital amplitude control data, and a power controller unit configured to adjust the power delivered by the digital amplitude modulator by setting a first amplifying gain of the first variable gain amplifier and a second amplifying gain of the second variable gain amplifier. | 05-06-2010 |
20110115525 | DEVICE FOR DETECTING THE PEAK VALUE OF A SIGNAL - A device for detecting the peak value of a signal with crest factor not known a priori includes a pair of peak detectors, each of which includes a rectifier element and a discharge-current generator and generates a respective output signal that is a function of the ratio between a physical dimension of the rectifier element and the intensity of discharge current produced by the generator. The ratio is different for the two detectors, and a combination network combines the output signals of the two peak detectors with one another and produces a combined signal indicating the peak value sought with high accuracy. | 05-19-2011 |
Duane Edward Presti, Doylestown, PA US
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20140122413 | BULK READ AND WRITE BETWEEN MULTI-DIMENSIONAL DATA STRUCTURES - A system and method for reading and writing of data values between multidimensional structures that reside in Online Analytical Processing (OLAP) databases are disclosed. Data queries may be performed and updates executed between multidimensional data structures, whether existing on the same server or separate servers. Bulk (being two or more intersections) transfers are allowed between multidimensional structures (or cubes), providing a performance gain that cannot be matched using a standard point-by-point implementation. An intersection only contains a numerical or data value if there is a value for each dimension at that intersection within the database. Multidimensional data structures naturally generate sparse intersections where no data values are found, which can greatly impact performance. Within each cube, only a small intersection of members actually contains values. The system may very quickly calculate reports which include any intersection in any very large cube. | 05-01-2014 |
Giovanni Presti, Torino IT
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20090207235 | Method for Determining Scattered Disparity Fields in Stereo Vision - In a system for stereo vision including two cameras shooting the same scene, a method is performed for determining scattered disparity fields when the epipolar geometry is known, which includes the steps of: capturing, through the two cameras, first and second images of the scene from two different positions; selecting at least one pixel in the first image, the pixel being associated with a point of the scene and the second image containing a point also associated with the above point of the scene; and computing the displacement from the pixel to the point in the second image minimising a cost function, such cost function including a term which depends on the difference between the first and the second image and a term which depends on the distance of the above point in the second image from a epipolar straight line, and a following check whether it belongs to an allowability area around a subset to the epipolar straight line in which the presence of the point is allowed, in order to take into account errors or uncertainties in calibrating the cameras. | 08-20-2009 |
Kelly Presti, Fairview, TX US
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20160115006 | AUTOMATED PORTABLE PERSONAL LIFT - The disclosed principles provide a personal moveable, automated lift mechanism. In one embodiment of an automated personal lift as disclosed herein, the lift may comprise an outer frame comprising a horizontal base support and an outer handrail supported above a perimeter of the horizontal base support by a plurality of outer vertical supports coupled to the horizontal base support, the outer handrail comprising a first opening having a width sufficient for a human user to step through. Such an exemplary lift may also comprise an inner frame positioned within the outer frame and comprising a horizontal platform configured to support the user and an inner handrail supported above a perimeter of the platform by a plurality of inner vertical supports coupled to the platform, the inner handrail comprising a second opening aligned with the first opening in the outer handrail. In addition, the lift may include an automated lifting mechanism coupling the outer frame to the inner frame, and configured to raise and lower the inner frame with respect to the outer frame. Also included may be at least one guide moveably connecting the outer frame to the inner frame, the at least one guide configured to provide horizontal stability between the outer and inner frames during the raising and lowering. Such embodiments may further include a plurality of friction reducing members attached to the base support and configured to allow the lift to be moved to a different location by the user. | 04-28-2016 |
Luigi Presti, Rome IT
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20160054991 | Tenant Allocation in Multi-Tenant Software Applications - A solution is proposed for managing a multi-tenant software application adapted to serve a plurality of tenants. A deletion request is received for deleting one of the tenants from the plurality of tenants. Responsive to receiving the deletion request, an instance of the software application associated with the tenant to he deleted is disabled. The disabled instance of the software application associated with the tenant to be deleted is deleted after a protection period from the deletion request. An addition request for adding a new tenant to the software application is received. An instance of the software application for the new tenant is allocated to a selected instance of the software application. | 02-25-2016 |
Luigi Presti, Roma IT
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20150106691 | Generation of Combined Documents from Content and Layout Documents Based on Semantically Neutral Elements - Managing markup documents having a definition conforming to a pre-defined specification by retrieving the definition of a content markup document, the definition including a set of one or more content portions enclosed within a content element of semantically neutral type having a content identifier, retrieving the definition of a layout markup document, the definition including a set of layout elements of semantically neutral type each one having a layout identifier, and generating the definition of a combined markup document from the definition of the layout markup document and the definition of the at least one content markup page, where generating the definition of a combined markup document includes inserting the content portion enclosed within each content element of the content markup document into the definition of the layout markup document in correspondence of each layout element with the layout identifier matching the content identifier of the content element. | 04-16-2015 |
Nunzio Presti, Calalzo Di Cadore IT
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20140150337 | TOOL FOR INJECTION OR INFUSION INTO TREES OR SHRUBS | 06-05-2014 |
Rachel Presti, University City, MO US
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20150284814 | VIRUSES ASSOCIATED WITH IMMUNODEFICIENCY AND ENTEROPATHY AND METHODS USING SAME - The present invention relates to previously undescribed viruses that are associated with significant expansion of the virome, immunodeficiency, and enteropathy during lentiviral infection. The invention also provides methods to detect acquired immune deficiency syndrome (AIDS) or AIDS progression in a subject, methods to diagnose immunodeficiency or enteropathy in a subject, and methods to identify a therapeutic agent to treat the same. | 10-08-2015 |
Richard Presti, East Meadow, NY US
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20100022651 | Method For Increasing Hair Growth - The present invention provides a method for stimulating hair growth, which comprises applying a composition containing a combination of a creatine compound and carnitine. The composition may further comprise 5′-AMP and NADH. Such a composition is effective in stimulating cell proliferation in the hair bulb of hair plugs. | 01-28-2010 |
20100137238 | Method For Increasing Hair Growth - The present invention provides a method for stimulating hair growth, which comprises applying a composition containing at least one energy-inducing compound selected from the group consisting of 5′-AMP and ATP. Such a composition is particularly effective in increasing the DNA synthesis in dermal papilla cells. | 06-03-2010 |
Richard Presti, Airmont, NY US
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20090306219 | TOPICAL USE OF PLANT EXTRACT FOR SKIN DETOXIFICATION - Specific plant extracts are applied topically to upregulate genes which code for proteins to prevent the build-up of and mitigate the activity of various harmful materials within the skin. These upregulated proteins include glutathione transferases, peroxiredoxins, oxidoreductases, glutaredoxins and glutathione syntheses. These proteins produce additional glutathione, glyoxalase I, maintain cellular redox homeostasis, reduce hydrogen peroxide and alkylhydroperoxides, and conjugate glutathione to a wide number of exogenous and endogenous hydrophobic electrophiles. Keratinocytes have been induced to significantly upregulate glutathione and glyoxalase I protein expression. Additionally, keratinocytes pre-treated with diallyl trisulfide have increased viability when exposed to ozone, UV radiation or cigarette smoke extract. The active material can be extracted from plants such as garlic, onions, shallots, leeks, chives, scallions, brussel sprouts, broccoli, cabbage, cauliflower, bok choy, kale, mustard, turnip or radish, may include any compound of the allyl sulfide family, and may be of synthetic origin. | 12-10-2009 |
Richard A. Presti, Airmont, NY US
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20100012142 | ENZYMATIC HAIR RELAXING AND STRAIGHTENING - A method to gently and permanently relax or straighten hair utilizes a protease enzyme, and preferably the enzyme kerA. The hair is optionally treated with a swelling agent, after which it is treated with the enzyme in an aqueous solution. The hair is then physically manipulated, such as by ironing, to remove unwanted curl, wave, and or kink. The enzyme has the ability to cleave inter-peptide bonds, allowing the hair fiber to be relaxed or straightened with less damage to the fiber than would have occurred using traditional or existing straightening methods. | 01-21-2010 |
20100330133 | METHOD AND COMPOSITION FOR IMPROVING SKIN COMPLEXION - Extracts of at least one, and preferably a mixture of, encapsulated mixed plant carbohydrates (polysaccharides) are applied topically to the skin to mitigate the appearance of wrinkled skin and to improve the overall complexion of the skin. The mixed plant extracts are preferentially applied in a dehydrated state, with a preferred source for the polysaccharides being cacti. The application vehicle is preferentially an anhydrous product, which allows slight penetration of smaller fractions of the dehydrated mixed cactus carbohydrate into the stratum corneum. Upon entering the stratum corneum the cactus carbohydrates begin to hydrate and swell resulting in a plumping effect, with the overall appearance of lines and wrinkles diminishing. | 12-30-2010 |
Richard Anthony Presti, Airmont, NY US
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20150306009 | USE OF HYDROLYSIS RESISTANT ORGANOMODIFIED SILYLATED SURFACTANTS IN PERSONAL CARE AND HOME CARE - There is provided herein a personal care or a home care composition comprising a silicon containing compound having the formula: | 10-29-2015 |