| National University Corporation Toyohashi University of Technology Patent applications |
| Patent application number | Title | Published |
|---|
| 20130120890 | TRANSISTOR PROTECTION CIRCUIT - Provided is a transistor protection circuit capable of appropriately protecting a transistor even when a switching frequency is high. A transistor protection circuit according to an embodiment of the present invention is a transistor protection circuit for protecting a voltage-driven transistor that is switch-controlled by the application of a high-potential-side voltage or low-potential-side voltage of a power supply to a gate terminal of the transistor by a drive circuit. The transistor protection circuit has a power supply controller that gradually lowers the high-potential-side voltage of the power supply upon receiving a protection command for executing protection of the transistor. | 05-16-2013 |
| 20130049862 | SWITCHING CIRCUIT AND ENVELOPE SIGNAL AMPLIFIER - A switching circuit according to one embodiment has: N switching elements; a connection circuit including N−1 first inductance elements that are connected in series; a second inductance element; and N third inductance elements. Control terminals of the N switching elements are connected to ends of the connection circuit and connection contacts, respectively. One end of the second inductance element is connected to a power supply. The N third inductance elements electrically connects one ends of the N switching elements and the other end of the second inductance element with each other, respectively. | 02-28-2013 |
| 20120326774 | SWITCHING CIRCUIT - A switching circuit according to one embodiment includes: a switching element that has a first terminal and a second terminal, and is driven by a pulse signal to switch a conduction state between the first and second terminals; a power source section that supplies a voltage to the first terminal; a load circuit that is connected in parallel with the power source section; a passive circuit section that is connected between a connection point between the power source section and the load circuit, and the first terminal, and suppresses a current flowing from the connection point to the switching element at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse signal; and a resonant circuit section that is connected between the passive circuit section and the connection point, and resonates at the frequency of N times. | 12-27-2012 |
| 20120306563 | SWITCHING CIRCUIT - A switching circuit according to one embodiment is a switching circuit including at least one semiconductor switch element having an input, output, and a common terminals, a pulse-like signal being applied between the input and common terminals to switch a current between the output and common terminals. The switching circuit further includes a capacitance suppression element section connected at least one of between the input and output terminals, between the input terminal common terminals, and between the output and common terminals. The capacitance suppression element section reduces a parasitic capacitance between the terminals of the semiconductor switch element where the capacitance suppression element section is connected to less than that obtained when the capacitance suppression element section is not connected at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal. | 12-06-2012 |
| 20120306288 | SWITCHING CIRCUIT - A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal. | 12-06-2012 |
| 20120231354 | ELECTROLYTE MEMBRANE, FUEL CELL, AND ELECTROLYTE MEMBRANE MANUFACTURING METHOD - A composite membrane that can be used as an electrolyte membrane of a fuel cell is produced from a resin material that contains at least polybenzimidazole and from a composite material that is produced from of hydrogen sulfate and heteropoly acid. The composite membrane has a basic structure of an aromatic hydrocarbon that does not contain fluorine and has good efficiency, even at a low doping level, so it can be used for the electrolyte membrane of a medium temperature dry fuel cell. Phosphoric acid is doped into the composite membrane. Characteristics of the relationship between output current density and output voltage for an electrolyte membrane that is made from the created composite membrane (a specimen | 09-13-2012 |
| 20120062968 | THREE-DIMENSIONAL IMAGE PROJECTION DEVICE - Provided is a three-dimensional image projector capable of displaying a highly reproducible three-dimensional image in response to changes in a viewer's position and easily accomplishing system downsizing. The three-dimensional image projector | 03-15-2012 |
| 20120002201 | Spectral Device and Method for Controlling Same - A spectroscopic device with high sensitivity is provided. | 01-05-2012 |
| 20110236263 | Combined Detector - A combined detector capable of simultaneously detecting both a value indicating a physical/chemical phenomenon such as a pH value and the intensity of an energy beam such as light. The combined detector comprises a physical/chemical phenomenon detecting system ( | 09-29-2011 |
| 20110213578 | Signal Detection Device, Signal Detection Method, and Method of Manufacturing Signal Detection Device - A signal detection device allows wavelet transformation of an object signal to be performed in real time by using a real signal mother wavelet. The signal detection device has: an object signal decomposition unit having a lifting scheme structure or a multiple analysis structure relying on multiresolution analysis; a parasitic filter coupled to a desired decomposition filter of the object signal decomposition unit, with the parasitic filter being configured such that a real signal mother wavelet is inputted to the object signal decomposition unit and a generic discrete wavelet transformation is performed, the parasitic filter substantially reproduces and outputs the inputted real signal mother wavelet, and with the real signal mother wavelet being made up of the object signal; means for inputting the object signal to the object signal decomposition unit and performing discrete wavelet transformation using the real signal mother wavelet; and means for computing a wavelet instantaneous correlation on the basis of an output of the parasitic filter. | 09-01-2011 |
| 20110174987 | Spectroscopic Device, and Method for Driving the Device - Provided is a spectroscopic device of a new constitution, which is suited for detecting precisely a fluorescent light emitted from an inspection object in a fluorometric analysis, such as a DNA. The spectroscopic device ( | 07-21-2011 |
| 20100128589 | COMPOSITION FOR HOLOGRAPHIC RECORDING MEDIUM - A composition for holographic recording medium, which can be coated in a uniform thickness and enables to simply produce a high definition holographic recording medium is provided. And a holographic medium having a low error rate, high storage capacity, high-performance, high-density, which is produced using the composition for the holographic recording medium, is also provided. The composition comprises a (meth)acrylic acid ester group-containing polymerizable substance, an alicyclic epoxy group-containing cationical polymerizable substance of which is ring-opening polymerized by heat, and a hydroxyl group-containing substance which is reactive with the alicyclic epoxy group-containing cationical polymerizable substance. The holographic recording medium is produced by forming a holographic recording layer on a substrate by applying the composition on the base material and polymerizing the alicyclic epoxy group-containing cationical polymerizable substance and the hydroxyl group-containing substance. | 05-27-2010 |
| 20100096666 | LAMINAR STRUCTURE ON A SEMICONDUCTOR SUBSTRATE - An object of the present invention is to provide a ferroelectric element having excellent properties, which includes a monocrystalline film of γ-Al | 04-22-2010 |
| 20100054607 | Three-Dimensional Model Search Method, Computer Program, and Three-Dimensional Model Search System - A novel search method having an advantage over the DSR 472 method the search accuracy of which is currently said to be the highest level is proposed. At the feature value computation stage, the two-dimensional image used in computation of the three-dimensional model feature value (excluding a contour feature value) is corrected so that the gray scales of the pixels are emphasized more as the distance from the center of the two-dimensional image increases. | 03-04-2010 |
