Patents by Inventor Kazuhiro Saito

Kazuhiro Saito 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).

  • Patent number: 8644380
    Abstract: A RAM_HIME used for integer pixel motion estimation by an IME stores integer pixel luminance data from a SDRAM while satisfying the conditions that improve efficiency in reading an extracted rectangular area. A RAM_HSME used for motion estimation of quarter-pixel accuracy by a SME stores partial quarter-pixel luminance data while satisfying the conditions that improve efficiency in obtaining a rectangular area after calculation by calculation. A RAM_HMEC used for chrominance data generation of quarter-pixel accuracy by a QPG stores integer pixel chrominance data from the SDRAM while satisfying the conditions that improve efficiency in obtaining rectangular areas after calculation by calculation.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: February 4, 2014
    Assignee: MegaChips Corporation
    Inventors: Kazuhiro Saito, Akira Okamoto
  • Publication number: 20140008522
    Abstract: In order to suppress a variation of a signal held by each signal holding unit, a solid-state imaging apparatus of the present invention is characterized in that, when a clamp operation of a pixel output signal is performed in the signal holding unit, a time changing rate of an amplitude of a drive pulse supplied to the selecting unit for turning from a non-conducting state to a conducting state is not larger than a time changing rate of the amplitude of the drive pulse supplied to the selecting unit for turning from the conducting state to the non-conducting state.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 9, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiro Saito, Hirofumi Totsuka, Manabu Nakanishi
  • Patent number: 8598901
    Abstract: A system includes: a plurality of pixels arranged in a matrix; a reference signal generating unit for generating a ramp signal; A/D converters each arranged correspondingly to each of columns to A/D-convert a signal from the pixel; a counter that performs a count operation according to an output of the ramp signal, and supplies the count signal through the count signal line to the A/D converter; and a counter test circuit that is provided independently from the A/D converter, and tests the counter, based on a matching of the expected value of the count signal with the count signal supplied through the count signal line from the counter. This configuration allows the count signal to be checked concurrently with imaging of an object.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: December 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Hiyama, Tetsuya Itano, Kazuhiro Saito, Yu Maehashi, Koichiro Iwata, Kohichi Nakamura
  • Patent number: 8583014
    Abstract: A powder holding container includes: a tubular shaped section that is formed in a tubular shape with a hole formed in a tube wall for letting powder pass through; an opening and closing member that moves in a straight line inside the tubular shaped section to open and close the hole; a projection portion that projects out from the opening and closing member and enters the hole; and a resilient tab that is formed by a cutout provided in the opening and closing member, and is resiliently deformable in directions in which the projection portion enters or exits the hole.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: November 12, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yosuke Ninomiya, Kazuhiro Saito, Satoru Hori
  • Patent number: 8577245
    Abstract: An image forming apparatus includes an image bearing member rotatably supported in a body of the image forming apparatus, and bearing a developer image; a developing device including a developing container, a developing member, and a transporting member, the developing container containing a developer, the developing member disposed so as to oppose the image bearing member, the developing member having thereon the developer in the developing container and rotating to develop a latent image, the transporting member transporting the developer in the developing container while stirring the developer, the developing device being unremovably supported with respect to the body of the image forming apparatus; and a damping member disposed with respect to an axial direction of a rotational axis of the developing member so as to be situated at an end portion of the developing container in the axial direction, and restraining vibration of the developing container.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: November 5, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Toyohiko Awano, Atsuna Saiki, Yosuke Ninomiya, Kazuhiro Saito, Satoru Hori, Kiyoshi Sakoh
  • Patent number: 8553118
    Abstract: In order to suppress a variation of a signal held by each signal holding unit, a solid-state imaging apparatus of the present invention is characterized in that, when a clamp operation of a pixel output signal is performed in the signal holding unit, a time changing rate of an amplitude of a drive pulse supplied to the selecting unit for turning from a non-conducting state to a conducting state is not larger than a time changing rate of the amplitude of the drive pulse supplied to the selecting unit for turning from the conducting state to the non-conducting state.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: October 8, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Saito, Hirofumi Totsuka, Manabu Nakanishi
  • Publication number: 20130258367
    Abstract: An image forming apparatus includes an image forming unit, a storage unit, an image processing unit and a control unit. The image processing unit (i) calculates a summed height of a color toner image formed on a sheet by summing up a height of the color toner image on the basis of input image data, (ii) calculates, on the basis of a target value for glossiness stored in the storage unit, a target total height of the color toner image and a clear toner image to realize the target value for glossiness, and (iii) calculates a height of the clear toner image by subtracting the summed height from the target total height. On the basis of the calculated height of the clear toner image, the control unit adjusts the height of the clear toner image formed on the sheet.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 3, 2013
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Kazuhiro SAITO, Hideaki TANAKA, Katsuyuki HIRATA, Takashi HARASHIMA
  • Patent number: 8543040
    Abstract: A powder storage container includes a powder storage unit, a conveying member, and an elastic member. The powder storage unit stores powder. The conveying member is rotatably disposed in the powder storage unit and conveys the powder stored in the powder storage unit to an outlet. The elastic member includes: an upper end portion fixed to the inside of the powder storage unit; and a lower end portion which is a swingable free end and is disposed above the conveying member. A part of the lower end portion along the conveying direction of the conveying member is configured to contact with the conveying member to be elastically deformed.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: September 24, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Toshiaki Suzuki, Kazuhiro Saito
  • Patent number: 8471937
    Abstract: Each of a plurality of unit pixels includes first and second photoelectric conversion units, and a pixel output unit shared between the first and second photoelectric conversion units. A monitoring unit configured to control the charge-accumulation operation of the first photoelectric conversion unit by monitoring a signal generated based on the second photoelectric conversion unit is provided.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: June 25, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Saito, Daisuke Inoue, Yukihiro Kuroda, Tomohisa Kinugasa, Kouji Maeda
  • Patent number: 8471301
    Abstract: A device includes a plurality of photoelectric conversion regions, an interlayer insulating film arranged on the plurality of photoelectric conversion regions, a protective insulating film that is arranged in contact with the interlayer insulating film and has a refractive index different from that of the interlayer insulating film, recesses arranged in a light-receiving surface of each of the plurality of photoelectric conversion regions, and embedded regions embedded in the recesses. When a wavelength of incident light to each of the plurality of photoelectric conversion regions is denoted by ? and a refractive index of the embedded regions is denoted by n, a depth d of the recesses is represented by an expression d??/4n.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: June 25, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Kudo, Yoshiyuki Hayashi, Kazuhiro Saito, Taro Kato, Yoshihiko Fukumoto
  • Publication number: 20130148138
    Abstract: An image forming apparatus and a gradation correction method for the same are provided. An image forming apparatus includes an image forming section that forms a plurality of patch bands in a plurality of positions in a main scanning direction on an image bearing member, each of the plurality of patch bands having a plurality of gradation patches disposed in a sub-scanning direction; a density detection section that detects densities of the plurality of patch bands; and a control section that performs gradation correction based on detection results from the density detection section. The plurality of patch bands differs from each other.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 13, 2013
    Inventors: Hideaki TANAKA, Takashi HARASHIMA, Katsuyuki HIRATA, Daiki YAMANAKA, Kazuhiro SAITO
  • Patent number: 8439627
    Abstract: A steam turbine includes a casing, a rotor arranged inside the casing so as to extend in an axial direction of the casing, a rotor disk integrally formed with the rotor, a rotor-side implanting portion formed in the rotor disk, a plurality of moving blades arranged on the rotor disk in a circumferential direction of the rotor, and a moving blade-side implanting portion formed in the moving blade, in which the moving blade-side implanting portions of the moving blades are engaged with the rotor-side implanting portions, respectively. A cooling medium flows through a gap formed at least on a blade portion side of the moving blade among gaps formed between the moving blade-side implanting portions and the rotor-side implanting portions.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: May 14, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kazutaka Ikeda
  • Publication number: 20130088627
    Abstract: A photoelectric conversion device includes a counter circuit configured to count a first clock signal to output a count signal thereof, a second clock signal generation unit configured to generate a second clock signal based on the first clock signal, and a clock synchronization unit configured to output a count start signal in synchronization with the second clock signal, wherein the counter circuit performs a counting operation in response to the count start signal synchronized with the second clock signal.
    Type: Application
    Filed: September 12, 2012
    Publication date: April 11, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kohichi Nakamura, Hiroki Hiyama, Tetsuya Itano, Kazuhiro Saito, Yu Machashi, Koichiro Iwata
  • Publication number: 20130088292
    Abstract: A solid-state imaging apparatus includes: an amplifier circuit configured to amplify a signal from pixel; and a reference signal generating circuit configured to generate a ramp signal, wherein feedback capacitor elements having the same structure are electrically connected to a capacitive feedback type amplifier of the amplifier circuit and to a capacitive feedback type amplifier of the reference signal generating circuit respectively, and a connecting configuration between an amplifier of the amplifier circuit and the feedback capacitor element and a connecting configuration between an amplifier of the reference signal generating circuit and the feedback capacitor element are the same.
    Type: Application
    Filed: September 13, 2012
    Publication date: April 11, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yu Maehashi, Hiroki Hiyama, Tetsuya Itano, Kazuhiro Saito, Kohichi Nakamura
  • Publication number: 20130087685
    Abstract: An imaging apparatus includes a plurality of unit pixels arranged in a matrix and configured to generate a signal by photoelectric conversion, a plurality of pixel output lines connected to each column of the unit pixels, a plurality of column amplifiers configured to amplify a signal of the pixel output lines, and a driving circuit configured to generate a control signal of the column amplifiers. Each of the column amplifiers includes first and second input terminals, an output terminal, an input capacitance between the first and second input terminals, and a first switch between the second input and output terminals. The driving circuit is configured to generate the control signal so as to make a period for switching the first switch from a conductive state to a non-conductive state longer than a period for switching the first switch from the non-conductive state to the conductive state.
    Type: Application
    Filed: September 10, 2012
    Publication date: April 11, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuya Itano, Hiroki Hiyama, Kazuhiro Saito, Kohichi Nakamura, Koichiro Iwata, Yu Maehashi, Takeshi Akiyama
  • Publication number: 20130087686
    Abstract: A solid-state imaging apparatus includes a plurality of pixels arrayed in a matrix, and configured to generate signals by photoelectric conversion; a plurality of read-out circuits disposed on each column of the plurality of pixels arrayed in a matrix pattern, and configured to read out the signals from the plurality of pixels; a plurality of comparison units configured to compare the signals output from the plurality of read-out circuits with a reference signal whose level changes with time; a counter configured to count a clock signal after the level of the reference signal starts a change; a storage unit configured, when a magnitude relationship between the signals output from the plurality of the read-out circuits and the reference signal is reversed; and a reset unit configured to reset the count value stored in the storage unit.
    Type: Application
    Filed: September 11, 2012
    Publication date: April 11, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuya Itano, Hiroki Hiyama, Kazuhiro Saito, Kohichi Nakamura, Yu Maehashi
  • Publication number: 20130087687
    Abstract: A photoelectric conversion apparatus includes, on one substrate, a pixel driving unit and a signal processing unit that includes a digital circuit configured to execute signal processing. A first voltage and a second voltage different in value from the first voltage are supplied to the digital circuit of the pixel driving unit. A third voltage and a fourth voltage different in value from the third voltage are supplied to the digital circuit of the signal processing unit. A main portion of a first conductor that supplies the first voltage to the digital circuit of the pixel driving unit and a main portion of a second conductor that supplies the third voltage to the digital circuit of the signal processing unit are isolated from each other.
    Type: Application
    Filed: September 12, 2012
    Publication date: April 11, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroki Hiyama, Tetsuya Itano, Kazuhiro Saito, Kohichi Nakamura, Yu Maehashi, Koichiro Iwata
  • Publication number: 20130088625
    Abstract: A solid-state imaging apparatus includes: a plurality of pixels arranged in a matrix; a plurality of amplifier circuits each arranged correspondingly to each of columns of the pixels, for amplifying a signal from the pixel; and a current source transistor whose source is supplied with a power source voltage and which supplies the amplifier circuit with a bias current. When the current source transistor is operating in the saturation region, the gate voltage of the current source transistor that is supplied from the bias line is sampled and held. The gate voltage of the current source transistor with respect to the power source voltage is controlled to the sampled voltage, thereby suppressing variation. This suppression can, in turn, suppress occurrence of line noise and a lateral smear due to difference of drop in voltage of a power source line concerning a column circuit on each row.
    Type: Application
    Filed: September 12, 2012
    Publication date: April 11, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koichiro Iwata, Hiroki Hiyama, Tetsuya Itano, Kohichi Nakamura, Kazuhiro Saito
  • Patent number: 8417157
    Abstract: A developer storage container includes a container main body, an outflow port, an open/closed member and a turn stop part. The outflow port from which a developer flows out is formed in the container main body storing the developer. The open/closed member is supported to the container main body and, moves relative to the container main body based on a rotation of the container main body. The open/closed member opens and closes the outflow port. The turn stop part is formed on a wall face of the container main body, and has a circular arc shape being concentric with a rotation direction of the container main body. The turn stop part engages with a convex part which is provided in the attachment section and is formed at a different position in response to the image forming apparatus body.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: April 9, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuhiro Saito, Iwao Kuriki
  • Publication number: 20130070136
    Abstract: In an A/D converter, a first analog signal which is input to an input terminal in a state in which the input terminal and a reference voltage line are connected via a first capacitor is converted into digital data when a reference signal is supplied to the reference signal line in a state in which the reference signal line and a first input terminal of a comparator are connected via the first capacitor. A second analog signal which is input to the input terminal in a state in which the input terminal and the reference voltage line are connected via a second capacitor is converted into digital data when the reference signal is supplied to the reference signal line in a state in which the reference signal line and the first input terminal of the comparator are connected via the second capacitor.
    Type: Application
    Filed: August 9, 2012
    Publication date: March 21, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroki Hiyama, Kohichi Nakamura, Kazuhiro Saito, Tetsuya Itano