Patents by Inventor Yasushi Mizutani
Yasushi Mizutani 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: 8786525Abstract: The light emitting device comprises at least one data line, at least one pixel, a common electrode, a data driver and an ammeter, The pixel comprises a pixel drive circuit and a light emitting element, in which the pixel drive circuit includes a first transistor electrically connected to the data line and one end of the light emitting element, and the other end of the light emitting element is connected to the common electrode. The ammeter measures the current value of a detection current flowing from the data driver to the ammeter via the data line, the first transistor, the light emitting element of the pixel, and the common electrode when the data driver applies to the data line a first set voltage having such a potential that applies a forward bias voltage between both ends of the light emitting element via the first transistor.Type: GrantFiled: September 21, 2011Date of Patent: July 22, 2014Assignee: Casio Computer Co., Ltd.Inventors: Yasushi Mizutani, Jun Ogura
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Publication number: 20120068986Abstract: The light emitting device comprises at least one data line, at least one pixel, a common electrode, a data driver and an ammeter, The pixel comprises a pixel drive circuit and a light emitting element, in which the pixel drive circuit includes a first transistor electrically connected to the data line and one end of the light emitting element, and the other end of the light emitting element is connected to the common electrode. The ammeter measures the current value of a detection current flowing from the data driver to the ammeter via the data line, the first transistor, the light emitting element of the pixel, and the common electrode when the data driver applies to the data line a first set voltage having such a potential that applies a forward bias voltage between both ends of the light emitting element via the first transistor.Type: ApplicationFiled: September 21, 2011Publication date: March 22, 2012Applicant: Casio Computer Co., Ltd.Inventors: Yasushi Mizutani, Jun Ogura
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Patent number: 8139007Abstract: A light-emitting device comprises a power supply line, at least one data line, at least one pixel having a light-emitting element with one end electrically connected to the power supply line and another end set to a prescribed potential, and a first transistor connecting the data line(s) and one end of the light-emitting element, a current supplying circuit that outputs a verification current of a preset value, and a data driver unit having voltage measuring circuits that acquire a voltage of the one end of the light-emitting element as the verification voltage when the verification current flows via a current path of the data line and the first transistor of the pixel, from the one end of the light-emitting element to the other end from the current supplying circuit via the power supply line.Type: GrantFiled: March 30, 2009Date of Patent: March 20, 2012Assignee: Casio Computer Co., Ltd.Inventors: Yasushi Mizutani, Kazunori Morimoto, Tsuyoshi Ozaki
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Patent number: 8063663Abstract: A differential signal transmitting apparatus for transmitting a differential signal through two transmission lines. The apparatus includes: transmitting-side board connecting terminals that are provided for each of the transmission lines, and are able to connect a transmitting circuit for transmitting a differential signal; receiving circuit connecting terminals that are provided at a far end of a daisy-chain connection extending from the transmitting-side board connecting terminals provided for each of the transmission lines, and connect the receiving circuit for receiving the differential signal; and an undefined-logic preventing circuit that is connected at a near end of the daisy-chain connection and outputs a prescribed potential difference to the receiving circuit connecting terminals when the transmitting circuit is not connected to the transmitting circuit connecting terminals.Type: GrantFiled: July 2, 2008Date of Patent: November 22, 2011Assignee: Fujitsu LimitedInventors: Yasushi Mizutani, Kouichi Okamoto
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Publication number: 20110007102Abstract: A pixel drive apparatus to drive a pixel has a function of compensating a change in characteristics of the pixel. The pixel includes a light-emitting element and a drive control element to drive the light-emitting element. The pixel drive apparatus acquires the electrical characteristic parameter that is used to compensate variation of electrical characteristics of the light-emitting drive circuit including the drive control element based on a voltage value of the detection voltage after applying a voltage having a voltage value exceeding a threshold voltage across the drive control element to elapse of at least one relaxation time, and acquires a light-emitting characteristic parameter that is used to compensate variation of characteristics of the light-emitting element based on light-emitting luminance of the light-emitting element that is operated to emit light in accordance with luminance measurement image data corrected based on the electrical characteristic parameter.Type: ApplicationFiled: July 8, 2010Publication date: January 13, 2011Applicant: Casio Computer Co., Ltd.Inventors: Jun OGURA, Yasushi Mizutani, Kenji Kobayashi
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Patent number: 7857917Abstract: The present invention provides a high strength thick steel plate for marine structures superior in weldability and low temperature toughness of the HAZ, which is able to be produced at a low cost without use of a complicated method of production, and a method of production of the same, that is, steel for welded structures excellent in low temperature toughness of the weld heat affected zone and a method of production of the same characterized by casting molten steel containing, by mass %, C: 0.03 to 0.12%, Si: 0.05 to 0.30%, Mn: 1.2 to 3.0%, P: 0.015% or less, S: 0.001 to 0.015%, Cu+Ni: 0.10% or less, Al: 0.001 to 0.050%, Ti: 0.005 to 0.030%, Nb: 0.005 to 0.10%, and N: 0.0025 to 0.0060% by the continuous casting method, making the cooling rate from near the solidification point to 800° C. in the secondary cooling at that time 0.06 to 0.6° C./s, hot rolling the obtained slab, and cooling it from a temperature of 800° C. or more.Type: GrantFiled: July 21, 2005Date of Patent: December 28, 2010Assignee: Nippon Steel CorporationInventors: Kazuhiro Fukunaga, Yasushi Mizutani, Rikio Chijiiwa, Yoshiyuki Watanabe
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Patent number: 7671326Abstract: Disclosed is an image inputting apparatus including: a base; a sensor main body coupled with the base so as to be able to move in a vertical direction on the base; a switch provided on either one of an upper surface side of the base or a lower surface side of the sensor main body; and a convex part provided on another one of the upper surface side of the base or the lower surface side of the sensor main body at a position facing to the switch.Type: GrantFiled: April 22, 2008Date of Patent: March 2, 2010Assignee: Casio Computer Co., Ltd.Inventors: Shinobu Sumi, Takafumi Ohashi, Yasushi Mizutani, Kazuhiro Sasaki
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Patent number: 7612354Abstract: There is provided an image reading apparatus which reads an image pattern of a medium placed on a detection surface of a sensor array (100). In a waiting state, electrical connection between the sensor array (100) and a drive controller (110, 120) is cut off, and whether a medium is placed on the detection surface or not is detected. When a medium is placed on the detection surface, the sensor array (100) and the drive controller (110, 120) are electrically connected and an image reading operation is started. In a case where the medium is separated from the detection surface during the image reading operation, the image reading operation is suspended and the image reading apparatus is set to the waiting state.Type: GrantFiled: March 19, 2003Date of Patent: November 3, 2009Assignee: Casio Computer Co., Ltd.Inventor: Yasushi Mizutani
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Publication number: 20090244047Abstract: A light-emitting device comprises a power supply line, at least one data line, at least one pixel having a light-emitting element with one end electrically connected to the power supply line and another end set to a prescribed potential, and a first transistor connecting the data line(s) and one end of the light-emitting element, a current supplying circuit that outputs a verification current of a preset value, and a data driver unit having voltage measuring circuits that acquire a voltage of the one end of the light-emitting element as the verification voltage when the verification current flows via a current path of the data line and the first transistor of the pixel, from the one end of the light-emitting element to the other end from the current supplying circuit via the power supply line.Type: ApplicationFiled: March 30, 2009Publication date: October 1, 2009Applicant: Casio Computer Co., Ltd.Inventors: Yasushi MIZUTANI, Kazunori MORIMOTO, Tsuyoshi OZAKI
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Publication number: 20090244798Abstract: A power status notification method notifying a first device that a second power supply of a second device different from a first power supply of the first device is turned off, where a source voltage of the first power supply is different from a source voltage of the second power supply. The power status notification method and circuit include supplying the first device with a low-level notification signal indicating a power off state of the second power supply in a case where the source voltage of the second power supply drops to a predetermined voltage or is less than the predetermined voltage and setting the predetermined voltage at a value higher than a threshold level at which a circuit of the first device supplied with the notification signal recognizes as a low level.Type: ApplicationFiled: February 25, 2009Publication date: October 1, 2009Applicant: Fujitsu LimitedInventors: Yoshinari OGURA, Chongsuwanapaisal Pornchai, Yasushi Mizutani
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Publication number: 20080273603Abstract: A differential signal transmitting apparatus for transmitting a differential signal through two transmission lines. The apparatus includes: transmitting-side board connecting terminals 7a and 7b that are provided for each of the transmission lines 5a and 5b, and are able to connect a transmitting circuit 1 for transmitting a differential signal; receiving circuit connecting terminals that are provided at a far end of a daisy-chain connection extending from the transmitting-side board connecting terminals 7a and 7b provided for each of the transmission lines 5a and 5b, and connect the receiving circuit 2 for receiving the differential signal; and an undefined-logic preventing circuit 31 that is connected at a near end of the daisy-chain connection and outputs a prescribed potential difference to the receiving circuit connecting terminals when the transmitting circuit 1 is not connected to the transmitting circuit connecting terminals 7a, 7b.Type: ApplicationFiled: July 2, 2008Publication date: November 6, 2008Applicant: FUJITSU LIMITEDInventors: Yasushi Mizutani, Kouichi Okamoto
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Publication number: 20080265186Abstract: Disclosed is an image inputting apparatus including: a base; a sensor main body coupled with the base so as to be able to move in a vertical direction on the base; a switch provided on either one of an upper surface side of the base or a lower surface side of the sensor main body; and a convex part provided on another one of the upper surface side of the base or the lower surface side of the sensor main body at a position facing to the switch.Type: ApplicationFiled: April 22, 2008Publication date: October 30, 2008Applicant: Casio Computer Co., Ltd.Inventors: Shinobu Sumi, Takafumi Ohashi, Yasushi Mizutani, Kazuhiro Sasaki
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Patent number: 7428010Abstract: A photosensor system includes a photosensor array constituted by two dimensionally arraying a plurality of photosensors, an image reading section which reads a subject image at a predetermined image reading sensitivity by using the photosensor array, a sensitivity adjustment image reading section which reads a sensitivity adjustment subject image while the image reading sensitivity in the photosensor array is changed to a plurality of stages, an optimal image reading sensitivity deriving section which derives an image reading sensitivity optimal for reading operation of the subject image, on the basis of a pixel data group relating to an image pattern of the subject image read by the sensitivity adjustment image reading section, and an image reading sensitivity setting section which sets the optimal image reading sensitivity as the image reading sensitivity in the image reading section.Type: GrantFiled: April 30, 2007Date of Patent: September 23, 2008Assignee: Casio Computer Co., Ltd.Inventors: Yoshiaki Nakamura, Yasushi Mizutani
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Patent number: 7379101Abstract: A photosensor system includes an image read section which includes an image read region formed by arranging a plurality of photosensors in a matrix form. The image read region includes a sensitivity adjustment image read region, which is constituted of at least one of rows of the photosensors and columns. The image read section performs a read operation of a subject image by the image read region in accordance with an image read sensitivity. Read operation section is provided for sensitivity adjustment for performing a read operation for sensitivity adjustment which includes setting a charge accumulation period, reading an image for adjustment in the sensitivity adjustment image read region, and deriving an optimum image read sensitivity.Type: GrantFiled: November 8, 2002Date of Patent: May 27, 2008Assignee: Casio Computer Co., Ltd.Inventors: Yasushi Mizutani, Yoshiaki Nakamura
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Patent number: 7268807Abstract: A photosensor system includes a photosensor array constituted by two-dimensionally arraying a plurality of photosensors, an image reading section which reads a subject image at a predetermined image reading sensitivity by using the photosensor array, a sensitivity adjustment image reading section which reads a sensitivity adjustment subject image while the image reading sensitivity in the photosensor array is changed to a plurality of stages, an optimal image reading sensitivity deriving section which derives an image reading sensitivity optimal for reading operation of the subject image, on the basis of a pixel data group relating to an image pattern of the subject image read by the sensitivity adjustment image reading section, and an image reading sensitivity setting section-which sets the optimal image reading sensitivity as the image reading sensitivity in the image reading section.Type: GrantFiled: June 14, 2002Date of Patent: September 11, 2007Assignee: Casio Computer Co., Ltd.Inventors: Yoshiaki Nakamura, Yasushi Mizutani
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Publication number: 20070206113Abstract: A photosensor system includes a photosensor array constituted by two dimensionally arraying a plurality of photosensors, an image reading section which reads a subject image at a predetermined image reading sensitivity by using the photosensor array, a sensitivity adjustment image reading section which reads a sensitivity adjustment subject image while the image reading sensitivity in the photosensor array is changed to a plurality of stages, an optimal image reading sensitivity deriving section which derives an image reading sensitivity optimal for reading operation of the subject image, on the basis of a pixel data group relating to an image pattern of the subject image read by the sensitivity adjustment image reading section, and an image reading sensitivity setting section which sets the optimal image reading sensitivity as the image reading sensitivity in the image reading section.Type: ApplicationFiled: April 30, 2007Publication date: September 6, 2007Applicant: Casio Computer Co., Ltd.Inventors: Yoshiaki NAKAMURA, Yasushi Mizutani
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Publication number: 20070193664Abstract: The present invention provides a high strength thick steel plate for marine structures superior in weldability and low temperature toughness of the HAZ, which is able to be produced at a low cost without use of a complicated method of production, and a method of production of the same, that is, steel for welded structures excellent in low temperature toughness of the weld heat affected zone and a method of production of the same characterized by casting molten steel containing, by mass%, C: 0.03 to 0.12%, Si: 0.05 to 0.30%, Mn: 1.2 to 3.0%, P: 0.015% or less, S: 0.001 to 0.015%, Cu+Ni: 0.10% or less, Al: 0.001 to 0.050%, Ti: 0.005 to 0.030%, Nb: 0.005 to 0.10%, and N: 0.0025 to 0.0060% by the continuous casting method, making the cooling rate from near the solidification point to 800° C. in the secondary cooling at that time 0.06 to 0.6° C./s, hot rolling the obtained slab, and cooling it from a temperature of 800° C. or more.Type: ApplicationFiled: July 21, 2005Publication date: August 23, 2007Inventors: Kazuhiro Fukunaga, Yasushi Mizutani, Rikio Chijiiwa, Yoshiyuki Watanabe
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Patent number: 7225986Abstract: An image reading system which reads the images of a detectable object comprising an image display device that has an image display area to display images having luminosity corresponding to the display gradation and radiates the display illumination according to this luminosity; a detection surface in which the entire image display area of the image display device is covered with a laminated layer arrangement and a detectable object is placed; an image reading device comprising a first sub-area in the detection surface on which the detectable object is placed and a second sub-area which consists of an area corresponding to at least a portion of the area of the image display area except for the first sub-area; and a plurality of photosensors arranged in a matrix form provided in the first sub-area and second sub-area which has uniform transmittance, wherein at least a portion of the display illumination is permeated and the image of the detectable object is read in the first sub-area.Type: GrantFiled: March 5, 2004Date of Patent: June 5, 2007Assignee: Casio Computer Co., Ltd.Inventors: Yasushi Mizutani, Tomomi Sawano, Yasuo Koshizuka, Tatsuya Miyakawa, Makoto Sasaki
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Patent number: 7197850Abstract: A door weather strip has a mounting base portion, a hollow seal portion, a sub-seal lip, and a backside seal lip. Leading lips are provided in the middle of a front pillar part in such a way as to connect the backside seal lip to the sub-seal lip. Each of the leading lips forms an acute angle with respect to an extending direction of the backside seal lip. Especially, in an attached state, an intersection angle ? formed between the backside seal slip and each of the leading lips is set to be smaller than an angle ? formed between the extending direction of the backside seal lip, and a vertical line.Type: GrantFiled: July 8, 2004Date of Patent: April 3, 2007Assignee: Toyoda Gosei Co., Ltd.Inventors: Yasushi Mizutani, Atsushi Hashimoto
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Publication number: 20060114046Abstract: A differential clock transmission apparatus is adapted to convert an outgoing clock signal into a pair of differential clock signals for transmission and also convert a pair of differential clock signals into a single incoming clock signal and comprises a sending control section 11 that specifies an electric potential correction period that is a predetermined period before utilizing the incoming clock signal, a differential clock sending section 13 that converts a single outgoing clock signal into a pair of differential clock signals, an electric potential correcting section 14 that reduces the potential difference of the pair of differential clock signals within the electric potential correction period and a differential clock signal receiving section 22 that converts a pair of differential clock signals into a single incoming clock signal.Type: ApplicationFiled: February 18, 2005Publication date: June 1, 2006Applicant: FUJITSU LIMITEDInventor: Yasushi Mizutani