Sugibayashi, JP
Hideaki Sugibayashi, Toyama-Shi JP
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20090031804 | ANGULAR VELOCITY SENSOR AND METHOD OF SETTING TEMPERATURE CHARACTERISTICS OF ANGULAR VELOCITY SENSOR - In a method of setting temperature characteristics of an angular velocity sensor, temperature characteristics of a detuning frequency are acquired. The detuning frequency is a frequency difference between an oscillation frequency of an oscillation circuit including a piezoelectric vibrator and a frequency of a voltage of the piezoelectric vibrator caused by the Coriolis force. The sensitivity to the detuning frequency is acquired. The temperature characteristics of a detection phase are acquired. The detection phase is a phase difference between a Coriolis signal phase that corresponds to a phase angle of a voltage signal and an oscillation signal phase of the oscillation circuit. The sensitivity to the detection phase is acquired. The amount of phase shift of the detection phase is determined so that the change in sensitivity caused by the change in the detuning frequency with temperature is controlled using the change in sensitivity caused by the change in the detection phase with temperature. | 02-05-2009 |
20090031807 | ANGULAR VELOCITY SENSOR INTERFACE CIRCUIT AND ANGULAR VELOCITY DETECTION APPARATUS - An angular velocity detection apparatus includes an angular velocity detection signal amplifier circuit which amplifies an angular velocity detection signal Vo output from an angular velocity sensor, and an offset control circuit which controls an offset so as to be a reference voltage which is output when a value of an angular velocity is 0. The angular velocity detection apparatus further includes an input switch circuit which selects the reference voltage and a discharge switch circuit which short-circuits a capacitor included in a high-pass filter in an offset control period. | 02-05-2009 |
20090314084 | VIBRATING GYROSCOPE - A vibrating gyroscope includes two input buffers each arranged to input voltage signals appearing at respective detection electrodes of one of two piezoelectric vibrators. An adding circuit adds up output voltages of the respective input buffers. An amplitude control circuit automatically controls a loop gain such that an output voltage of the adding circuit has a substantially constant amplitude. A phase-shift circuit controls the phase of a drive voltage supplied to the piezoelectric vibrators such that the piezoelectric vibrators oscillate by positive feedback. Two differential amplifier circuits each amplify a voltage difference corresponding to an angular velocity about an axis. Two synchronous detection circuits each perform detection using a synchronizing signal generated from an oscillation signal, and detect a voltage signal corresponding to the angular velocity. | 12-24-2009 |
20100058862 | VIBRATING GYRO - A piezoelectric vibrator of a vibration gyro vibrates in response to a drive voltage V | 03-11-2010 |
Makiko Sugibayashi, Hitachi JP
Patent application number | Description | Published |
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20080211984 | Liquid crystal display device and plasma display device - An image display device designed to improve shock resistance and to eliminate external image reflection and blurring. In an liquid crystal display device are disposed a backlight, a polarizing plate on the backlight side and a liquid crystal panel held by two glass substrates and having electrodes, a liquid crystal layer, an alignment layer and a color filter therein. The image display device has a transparent front plate provided on the liquid crystal panel opposite from the backlight, a transparent organic medium layer provided between the front plate and the liquid crystal panel, and an antiglare layer provided on the front plate opposite from the transparent organic medium layer. | 09-04-2008 |
20090141220 | Liquid Crystal Display - A liquid crystal display includes a pair of substrates having a polarizer, a liquid crystal layer sandwiched between the substrates of the pair, a color filter layer sandwiched between one of the substrates of the pair and the liquid crystal layer, a light source for supplying light to the pair of substrates, the liquid crystal layer, and the color filter layer. The color filter layer includes three filters for displaying blue, green and red. The green filter of the three filters selectively includes an absorbing component capable of absorbing a light spectrum within a wavelength range from 400 nm to 500 nm. | 06-04-2009 |
20100238377 | LIQUID CRYSTAL DISPLAY - Manufacture of a liquid crystal display is disclosed. The liquid crystal display includes a backlight unit, a backlight unit-side polarizing plate, and a liquid crystal cell held by two glass plates, the liquid crystal cell having an electrode, a liquid crystal layer, an alignment layer, and a color filter arranged between the glass plates. The liquid crystal display also includes a transparent front plate arranged at a side of the liquid crystal cell opposite to the backlight unit, a polarizing plate attached to the liquid crystal cell, and a transparent organic medium layer arranged between the front plate and the liquid crystal cell. Since the front plate is provided at the outermost surface of an image display portion, and the transparent organic medium is filled between the front plate and the liquid crystal module, it is possible to achieve an improvement in wear resistance and a reduction in reflectance. | 09-23-2010 |
Makiko Sugibayashi, Chiba JP
Patent application number | Description | Published |
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20080297685 | Image display device - An object of the present invention is to provide an image display device having a configuration that allows the device to be manufactured in such a way as to prevent unwanted spread and penetration of the polymeric precursor of the elastomer in its liquid display panel and thereby prevent the expansion and degradation of the members adjacent to the panel, which leads to an improvement in the performance of the image display device. | 12-04-2008 |
20090086120 | Liquid Crystal Display Device - An object of the present invention is to propose the structure and constitution of a liquid crystal display device having a protection plate, which prevents exfoliation of black painting at ends of the protection plate when dust on the protection plate of the liquid crystal display device is wiped off, thus preventing degradation of design features. | 04-02-2009 |
20090148688 | OPTICAL MATERIALS - An optical material having a reflecting membrane, an enhanced reflecting membrane, or an anti-reflecting membrane formed with coating is provided. The optical material includes an optical material matrix, and a first inorganic compound layer and a second inorganic compound layer which are alternately stacked on the optical material matrix, wherein the first inorganic compound layer is formed of a titanium compound having a hydrolysable residue and oilophilic smectite and has a refractive index higher than the refractive index of the optical material matrix, and wherein the second inorganic compound layer includes silicon oxide and has a refractive index lower than the refractive index of the optical material matrix. | 06-11-2009 |
Tadahiko Sugibayashi, Minato-Ku JP
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20100046283 | MAGNETIC RANDOM ACCESS MEMORY AND OPERATION METHOD OF THE SAME - A magnetic random access memory of the present invention includes: a plurality of first wirings and a plurality of second wirings extending in a first direction; a plurality of third wirings and a plurality of fourth wirings extending in a second direction; and a plurality of memory cells provided at intersections of the plurality of first wirings and the plurality of third wirings, respectively. Each of the plurality of memory cells includes: a first transistor and a second transistor connected in series between one of the plurality of first wirings and one of the plurality of second wirings and controlled in response to a signal on one of the plurality of third wirings, a first magnetic resistance element having one end connected to a write wiring through which the first transistor and the second transistor are connected, and the other end grounded; and a second magnetic resistance element having one end connected to the write wiring, and the other end connected to the fourth wiring. | 02-25-2010 |