Patents by Inventor Atsushi Matsuda
Atsushi Matsuda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6819273Abstract: An integrated circuit includes an analog signal output unit which converts a digital output signal into at least one analog output signal, and outputs the at least one analog output signal, an analog signal input unit which converts at least one analog input signal received from an exterior into a digital input signal, a switch circuit which provides at least one signal path through which the at least one analog output signal is supplied from the analog signal output unit to the analog signal input unit as the at least one analog input signal, and an offset adjustment control circuit which supplies an output offset from the analog signal output unit to the analog signal input unit via the at least one signal path so as to detect the digital input signal inclusive of the output offset and an input offset, and cancels offsets of the analog signal output unit and the analog signal input unit in response to the output offset and the input offset obtained from the detected digital input signal.Type: GrantFiled: February 19, 2003Date of Patent: November 16, 2004Assignee: Fujitsu LimitedInventors: Tohru Mizutani, Hiromi Nanba, Atsushi Matsuda, Atsushi Hitaka, Masashi Okubo, Yoshinori Yoshikawa, Kenichi Minobe
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Patent number: 6639536Abstract: First and second switches are connected at each node between adjacent resistors in a resistor row and at the end of the resistor row. A predetermined number of first switches are grouped together and short-circuited to obtain a plurality of first switch groups, and a predetermined number of second switches are grouped together and short-circuited to obtain a plurality of second switch groups. The first and second switch groups are connected to output terminals via output switches. The first and second switches are ON/OFF controlled such that only one switch in the first and second switch groups is connected to the resistance row.Type: GrantFiled: February 11, 2003Date of Patent: October 28, 2003Assignee: Fujitsu LimitedInventors: Atsushi Matsuda, Tohru Mizutani
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Publication number: 20030179118Abstract: An integrated circuit includes an analog signal output unit which converts a digital output signal into at least one analog output signal, and outputs the at least one analog output signal, an analog signal input unit which converts at least one analog input signal received from an exterior into a digital input signal, a switch circuit which provides at least one signal path through which the at least one analog output signal is supplied from the analog signal output unit to the analog signal input unit as the at least one analog input signal, and an offset adjustment control circuit which supplies an output offset from the analog signal output unit to the analog signal input unit via the at least one signal path so as to detect the digital input signal inclusive of the output offset and an input offset, and cancels offsets of the analog signal output unit and the analog signal input unit in response to the output offset and the input offset obtained from the detected digital input signal.Type: ApplicationFiled: February 19, 2003Publication date: September 25, 2003Inventors: Tohru Mizutani, Hiromi Nanba, Atsushi Matsuda, Atsushi Hitaka, Masashi Okubo, Yoshinori Yoshikawa, Kenichi Minobe
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Publication number: 20030151537Abstract: First and second switches are connected at each node between adjacent resistors in a resistor row and at the end of the resistor row. A predetermined number of first switches are grouped together and short-circuited to obtain a plurality of first switch groups, and a predetermined number of second switches are grouped together and short-circuited to obtain a plurality of second switch groups. The first and second switch groups are connected to output terminals via output switches. The first and second switches are ON/OFF controlled such that only one switch in the first and second switch groups is connected to the resistance row.Type: ApplicationFiled: February 11, 2003Publication date: August 14, 2003Applicant: FUJITSU LIMITEDInventors: Atsushi Matsuda, Tohru Mizutani
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Publication number: 20020189545Abstract: A heating element CVD device capable of providing a high productivity and decomposing and/or activating the material gas led into a processing container by a heating element and stacking film on a substrate disposed in the processing container, wherein the connection part area of the heating element to a connection terminal for connecting the hearing element to a power supply mechanism is not exposed to a space inside the processing container, specifically, the connection part area is covered by a cylindrical body or a platy body covering the connection part area while providing a space part thereof from the hearing element, or the connection part area allows the space part to be present in a space thereof from the connection terminal and is covered by the cylindrical body or platy body covering the connection part area while providing the space part in a space thereof from the heating element, and hydrogen gas is led from the connection terminal side into the processing container through the space part, wherType: ApplicationFiled: May 14, 2002Publication date: December 19, 2002Inventors: Hideki Matsumura, Atsushi Matsuda, Keiji Ishibashi, Masahiko Tanaka, Minoru Karasawa
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Publication number: 20020000377Abstract: An oxygen sensor including an elongated casing including an exhaust gas inlet through which the exhaust gas from a vehicle engine enters thereinto, a sensing element including an outer planar surface opposed to the exhaust gas inlet, and an inner planar surface on the opposite side of the outer planar surface, and a heater separably disposed on the inner planar surface of the sensing element.Type: ApplicationFiled: June 25, 2001Publication date: January 3, 2002Applicant: UNISIA JECS CORPORATIONInventor: Atsushi Matsuda
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Patent number: 6064243Abstract: The present invention is a current switch, which supplies a constant current to a load circuit, and comprises: a transistor, the gate of which is supplied with a predetermined constant voltage, and the drain of which is connected to the above-mentioned load circuit; and a constant voltage supply circuit, which, in response to a control signal, supplies to the source of the above-mentioned transistor a first constant voltage, or a second constant voltage that differs from the first constant voltage, wherein when the above-mentioned first constant voltage is supplied to the above-mentioned transistor source by the above-mentioned constant voltage supply circuit, the transistor is turned ON and supplies the above-mentioned constant current to the above-mentioned load circuit, and when the above-mentioned secondary constant voltage is supplied to the above-mentioned transistor source, the transistor is turned OFF and interrupts the above-mentioned constant current.Type: GrantFiled: February 17, 1998Date of Patent: May 16, 2000Assignee: Fujitsu LimitedInventors: Atsushi Matsuda, Yuji Segawa, Kunihiko Gotoh
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Patent number: 5950541Abstract: A lithographic printing plate is produced using a lithographic printing original plate which is composed of a paper support having a volume electric resistance adjusted to 1.times.10.sup.10 .OMEGA..multidot.cm or below by undergoing a conductive treatment, a metallic conductive layer provided on one surface of the support, a photoconductive layer composed of zinc oxide and a binder provided on the metallic conductive layer, and a laminate layer composed of an .alpha.-polyolefin having a volume electric resistance adjusted to 1.times.10.sup.10 .OMEGA..multidot.cm or below by undergoing a conductive treatment provided on the other surface of the support. The lithographic printing original plate is subjected to a negative corona discharge from the side having the photoconductive layer and in this charging, a conductor having an earth potential is contacted with the metal conductive layer from the side of the lithographic printing original plate, where an edge of metal conductive layer is exposed.Type: GrantFiled: February 12, 1998Date of Patent: September 14, 1999Assignees: Fuji Photo Film Co., Ltd., Tomoegawa Paper Co., Ltd.Inventors: Takao Nakayama, Atsushi Matsuda
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Patent number: 5870000Abstract: An oscillation circuit for producing an output whose frequency accords with an input voltage value, comprises a first constant current source whose current has a value according to the input voltage value; a charge capacitor to be charged by the first constant current source; a comparator having one input terminal connected to a charge terminal of the charge capacitor to be charged and an other input terminal supplied with a first reference voltage, for comparing inputs to both input terminals with each other and outputting an output signal having a high level or a low level; and first switch means for pulling down a potential of the charge terminal of the charge capacitor to a second reference voltage lower than the first reference voltage under control by an output of the comparator.Type: GrantFiled: February 24, 1997Date of Patent: February 9, 1999Assignee: Fujitsu LimitedInventors: Atsushi Matsuda, Yuji Segawa
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Patent number: 5861771Abstract: A regulator circuit includes an output circuit outputting an output voltage based on a control voltage, a reference voltage generating circuit generating a reference voltage, an output voltage control circuit comparing the reference voltage with a voltage depending on the output voltage and producing the control voltage based on a comparison result, and a power supply circuit which supplies the reference voltage generating circuit and the output voltage control circuit with a first power supply voltage which is different from a second power supply voltage supplied to the output circuit.Type: GrantFiled: June 10, 1997Date of Patent: January 19, 1999Assignee: Fujitsu LimitedInventors: Atsushi Matsuda, Hirokazu Tanaka, Kunihiko Gotoh
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Patent number: 5673002Abstract: An operational amplifier has a differential amplification section, an output section, a control signal generation unit, and a drive control unit. The output section has a first transistor of a first conductivity type and a second transistor of a second conductivity type that is opposite to the first conductivity type. The first and second transistors are connected in series between a first power source unit and a second power source unit, and the first transistor is driven according to an output of the differential amplification section. The control signal generation unit is used to detect a current flowing through the first transistor and generate a control signal in response to the detected current. The drive control unit is used to drive the second transistor in response to the control signal.Type: GrantFiled: August 8, 1996Date of Patent: September 30, 1997Assignee: Fujitsu LimitedInventors: Osamu Kobayashi, Atsushi Matsuda, Tachio Yuasa
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Patent number: 5606287Abstract: An operational amplifier has a differential amplification section, an output section, a control signal generation unit, and a drive control unit. The output section has a first transistor of a first conductivity type and a second transistor of a second conductivity type that is opposite to the first conductivity type. The first and second transistors are connected in series between a first power source unit and a second power source unit, and the first transistor is driven according to an output of the differential amplification section. The control signal generation unit is used to detect a current flowing through the first transistor and generate a control signal in response to the detected current. The drive control unit is used to drive the second transistor in response to the control signal.Type: GrantFiled: March 29, 1995Date of Patent: February 25, 1997Assignee: Fujitsu LimitedInventors: Osamu Kobayashi, Atsushi Matsuda, Tachio Yuasa
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Patent number: 5568147Abstract: A D/A converter has a first partial circuit, and second and third partial circuits connected with said first partial circuit. The first partial circuit has a first row of K resistors of the same resistance value and groups of switches provided for the resistors, to select "K-1" resistors among said K resistors and connect said selected resistors in series with said second and third partial circuits. The second partial circuit has a second row of L resistors, a first group of switches connected in series with said resistors, respectively, and a second group of switches connected in parallel with said series-connected second row of resistors and said first group of switches, respectively. The third partial circuit has a third row of L resistors, a third group of switches connected in series with said resistors, respectively, and a fourth group of switches connected in parallel with said series-connected third row of resistors and said third group of switches, respectively.Type: GrantFiled: November 2, 1994Date of Patent: October 22, 1996Assignee: Fujitsu LimitedInventors: Atsushi Matsuda, Tachio Yuasa
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Patent number: 5483384Abstract: A lens accessory attaching mechanism is provided to attach a lens accessory to a lens barrel. The lens attaching mechanism has four pairs of first and second rollers attached to the proximal end portion of the lens accessory into which the distal end of the lens barrel is inserted. The first and second rollers are equiangularly spaced in the circumferential direction of the lens accessory and are movable in a radial direction thereof. A ring spring arranged around all of the first and second rollers urges the rollers radially inwardly. An outer flange portion formed on the outer periphery of the lens barrel abuts the first and second rollers to restrict the movement of the lens accessory in the axial direction of the lens barrel.Type: GrantFiled: February 23, 1994Date of Patent: January 9, 1996Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Morio Takizawa, Atsushi Matsuda, Tetsuo Sekiguchi
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Patent number: 5239417Abstract: A lens barrel for an automatic focusing camera is provided with an annular changeover member arranged so as to be manually rotatable about the optical axis, and further arranged so as to be manually movable in a direction of the optical axis. A first clutch mechanism is provided for releasing a connection between the annular changeover member and an annular focusing member, to permit independent rotation thereof, when the annular changeover member is in an AF mode setting position, and for forming the connection therebetween to thereby form a rotationally dependent structure when it is in an MF mode setting position. A second clutch mechanism is provided for forming a connection between a drive shaft and the annular focusing member when the annular changeover member is in the AF mode setting position, and for releasing the connection therebetween when it is in the MF mode setting position.Type: GrantFiled: May 20, 1992Date of Patent: August 24, 1993Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Haruki Eguchi, Takuji Hamasaki, Kenji Watanabe, Katsumori Kikuchi, Hiroaki Suzuki, Morio Takizawa, Atsushi Matsuda
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Patent number: 4893145Abstract: A group of photographic lenses are disposed in a lens barrel in such a way as to be freely movable back and forth in the direction of the optical axis thereof and the group of photographic lenses are driven by an automatic focusing means in accordance with the range of a distance from an object, whereby automatic focusing is attained. In addition, a manual control device is provided for moving the photographic lenses in the direction of the optical axis thereof. Also a connection between the manual control device and the photographic lenses is cut off by controlling a changeover device.Type: GrantFiled: January 26, 1988Date of Patent: January 9, 1990Assignee: Asahi Kogaku Kogyo K.K.Inventor: Atsushi Matsuda
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Patent number: 4664214Abstract: Steering arrangements for motorcycles herein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. An arrangement is provided to adjust the steering ratio between the front and rear wheels in response either to vehicle load or an engine running condition.Type: GrantFiled: February 3, 1986Date of Patent: May 12, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Atsushi Matsuda, Toshiyuki Sato
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Patent number: 4662469Abstract: An embodiment of steering arrangement for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. The rear wheel is driven by means of a shaft drive.Type: GrantFiled: February 27, 1986Date of Patent: May 5, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Atsushi Matsuda, Toshiyuki Sato
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Patent number: 4655311Abstract: Two embodiments of steering arrangements for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled by a positive linkage system to the mechanism for steering the front wheels so that both wheels will be steered in unison. In one embodiment of the invention, the positive linkage system includes irreversible gearing so that forces applied to the rear wheel will not effect its steering or steering of the front wheel.Type: GrantFiled: February 7, 1986Date of Patent: April 7, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Atsushi Matsuda, Toshiyuki Sato
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Patent number: 4651844Abstract: Steering arrangements for motorcycles wherein the rear wheel is supported for steering movement and is mechanically coupled to the mechanism for steering the front wheel so that both wheels will be steered in unison. An arrangement is provided to adjust the steering ratio between the front and rear wheels to suit riding conditions and rider preference and a caster angle is chosen to minimize effective wheelbase changes under suspension travel.Type: GrantFiled: December 30, 1985Date of Patent: March 24, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Atsushi Matsuda, Tashiyuki Sata