Patents by Inventor Yuichiro Yamashita

Yuichiro Yamashita 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: 8507870
    Abstract: An imaging apparatus has an imaging area formed by arranging a plurality of imaging blocks each including a pixel array, a plurality of vertical signal lines, a horizontal output line commonly provided for the plurality of vertical signal lines to read out signals read out to the plurality of vertical signal lines, a first scanning circuit, and a second scanning circuit, wherein signals of the pixels of a selected row in the pixel array are read out to the plurality of vertical signal lines in accordance with a driving pulse from the first scanning circuit, the signals read out to the plurality of vertical signal lines are sequentially read out to the horizontal output line in accordance with a driving pulse from the second scanning circuit, and a length in a row direction of the pixel array is smaller than a length in a column direction of the pixel array.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: August 13, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yu Arishima, Yuichiro Yamashita, Masaru Fujimura, Shin Kikuchi, Shoji Kono, Shinichiro Shimizu
  • Patent number: 8456559
    Abstract: A solid-state imaging apparatus includes the carrier holding portion and the amplifying portion in each pixel, wherein a first voltage supplied to a transfer electrode when the transfer portion for transferring carriers from the carrier holding portion to the amplifying portion is placed in a non-conducting state is opposite in polarity to a voltage supplied to the transfer electrode during the turning on period of the transfer portion, and a second voltage supplied to the control electrode of the carrier holding portion during a holding period in which the carriers are retained in the carrier holding portion is the same in polarity as the first voltage and is larger in absolute value than the first voltage.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: June 4, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Masahiro Kobayashi
  • Patent number: 8451361
    Abstract: An image pickup device is provided, capable of complete correction with data of once analog-to-digital conversion, and prevention of excess use of switches and analog devices and/or erroneous correction, including: an image sensor having a plurality of analog-to-digital converters determining conversion results from a digital signal of higher order bit through separate steps of two or more times; a first correction unit which has a correction factor for correcting nonlinear errors of the plurality of analog-to-digital converters so as to adapt to the analog-to-digital converters and corrects a nonlinear error of a digital signal output from respective analog-to-digital converters based on a correction factor corresponding to respective analog-to-digital converters, characterized in that the first correction unit corrects the nonlinear errors after converting the digital signals from the plurality of analog-to-digital converters into a serial output.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: May 28, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Yamashita
  • Patent number: 8441564
    Abstract: In the solid-state imaging apparatus, the carrier holding portion is arranged at a position in a first direction from a photoelectric conversion portion, a floating diffusion region is arranged at a position in a second direction perpendicular to the first direction from the carrier holding portion with a transfer portion sandwiched between the floating diffusion region and the carrier holding portion, the carrier holding portion included in the first pixel is arranged between the photoelectric conversion portion included in the first pixel and the photoelectric conversion portion included in the second pixel, the carrier holding portion included in the first pixel is covered with a light shielding portion, and the light shielding portion extends over a part of each of the photoelectric conversion portions included in the first and second pixels.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: May 14, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Yamashita
  • Patent number: 8427564
    Abstract: A driving method of a solid-state imaging apparatus includes a first driving mode wherein a start and an end of an operation of accumulating an electric charge in a pixel are set commonly to a plurality of rows of pixels, and a second driving mode wherein a start and an end of an operation of accumulating the electric charge in the pixel are set commonly to pixels in each one of the rows of the pixels.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: April 23, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Yusuke Onuki
  • Patent number: 8400541
    Abstract: A photoelectric conversion apparatus includes: a first semiconductor region forming a part of a photoelectric conversion element; a second semiconductor region stacked on the first semiconductor region, and forming a part of the photoelectric conversion element; a third semiconductor region to which a signal charge transferred from the photoelectric conversion element; a fourth semiconductor region of the first conductivity type having an higher impurity concentration, between the first and third semiconductor region and between the second and third semiconductor regions, closer to a main surface than the first semiconductor region, and connected to the first semiconductor region; a first gate electrode over the fourth semiconductor region, an insulating film on the main surface and between the first gate electrode and the fourth semiconductor region; and a second gate electrode between the third and fourth semiconductor regions, and over the insulating film.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: March 19, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Yamashita
  • Patent number: 8395588
    Abstract: A touch panel includes a light guide including a first face for detecting the position of an object in contact therewith and a second face opposite the first face, and a line sensor for receiving light emitted from a side face of the light guide plate, wherein, of light irradiated from the second face side, the light guide guides toward the side face the portion of light reflected by the object.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: March 12, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Michiko Johnson, Shin Hasegawa
  • Patent number: 8384006
    Abstract: An apparatus includes pixels each having a transistor that transfers a charge of a photoelectric conversion unit, an amplification unit that receives the transferred charge, a scanning unit that supplies, to the transistor, a conductive pulse, a non-conductive pulse, and an intermediate-level pulse having a peak value between the conductive pulse and the non-conductive pulse, a generating unit that generates an image signal using a signal based on a charge transferred in response to the conductive and intermediate-level pulses, and a control unit that changes at least one of a pulse width of the intermediate-level pulse and the peak value in accordance with information on the detected temperature. The conductive and intermediate-level pulses are supplied to the transistor during a light shielding period of the photoelectric conversion unit.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: February 26, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Yusuke Onuki
  • Patent number: 8357956
    Abstract: A solid-state imaging apparatus, controlling a potential on a semiconductor substrate for an electronic shutter operation, includes: a first semiconductor region of the first conductivity type for forming a photoelectric conversion region; a second semiconductor region of the first conductivity type, formed separately from the photoelectric conversion region, for accumulating carriers; a third semiconductor region of a second conductivity type arranged under the second semiconductor region, for operating as a potential barrier; a fourth semiconductor region of the second conductivity type extending between the first semiconductor region and the semiconductor substrate, and between the third semiconductor region and the semiconductor substrate; and a first voltage supply portion for supplying a voltage to the third semiconductor region; wherein the first voltage supply portion includes a fifth semiconductor region of the second conductivity type arranged in the pixel region, and a first electrode connected to
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: January 22, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita
  • Patent number: 8355005
    Abstract: A touch panel includes a light guide including a first face for detecting the position of an object in contact therewith and a second face opposite the first face, and a line sensor for receiving light emitted from a side face of the light guide plate, wherein, of light irradiated from the second face side, the light guide guides toward the side face the portion of light reflected by the object.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: January 15, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Yamashita, Michiko Johnson, Shin Hasegawa
  • Patent number: 8339495
    Abstract: A solid-state image pickup apparatus includes rows and columns of pixels, each column or each set of a plurality of columns being provided with an analog-to-digital converter. When an operation for holding analog electric signals performed by the analog-to-digital converters is performed simultaneously with an operation for outputting data from memories holding digital signals that are output from the analog-to-digital converters, “streaky noise” artifacts appear on an image obtained by such operations. To avoid this, the operation for holding the analog electric signals and the operation for outputting data from the memories holding the digital signals are set apart from each other by at least one data clock period of a scanning circuit.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Sugai, Yuichiro Yamashita
  • Publication number: 20120312964
    Abstract: An image pickup apparatus includes a plurality of pixels each including a read-out node to which an electric charge generated in a photoelectric conversion unit is transferred, an output unit configured to convert the electric charge transferred to the read-out node into a voltage and output the resultant voltage to a signal line, and a switch including a first node electrically connected to the read-out node. Each switch includes a second node different from the first node, and a particular number of second nodes are electrically connected to a common bypass wiring.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 13, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuichiro Yamashita, Shinichiro Shimizu, Toru Koizumi, Takashi Matsuda
  • Publication number: 20120312965
    Abstract: A solid-state image pickup device which includes, on a semiconductor substrate, an image pickup area which includes plural columns of pixels, and plural column amplifier circuits each provided at each column of pixels or at every plural columns of pixels, wherein: each of the column amplifier circuits includes at least two amplifier circuit stages; a preceding amplifier circuit is a variable-gain amplifier circuit and the switchable gains include plural one or more gains; and a subsequent amplifier circuit is capable of amplifying, at one or more gains, the signal amplified at one or more gains in the preceding amplifier circuit.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 13, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuichiro Yamashita, Takashi Matsuda
  • Publication number: 20120300106
    Abstract: A solid-state image pickup apparatus includes a photoelectric conversion unit, a charge storage unit, and a floating diffusion unit, all disposed on a semiconductor substrate. The solid-state image pickup apparatus further includes a first gate electrode disposed on the semiconductor substrate and extending between the photoelectric conversion unit and charge storage unit, and a second gate electrode disposed on the semiconductor substrate and extending between the charge storage unit and the floating diffusion unit. The solid-state image pickup apparatus further includes a light shielding member including a first part and a second part, wherein the first part is disposed over the charge storage unit and at least over the first gate electrode or the second gate electrode, and the second part is disposed between the first gate electrode and the second gate electrode such that the second part extends from the first part toward a surface of the semiconductor substrate.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 29, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita, Yusuke Onuki
  • Publication number: 20120298841
    Abstract: Provided is a back-illuminated solid-state image pickup apparatus having an improved color separation characteristic. A photo detector includes a first photo detector unit and a second photo detector unit disposed deeper than the first photo detector unit with respect to a back surface of a semiconductor substrate, wherein the first photo detector unit includes a first-conductivity-type first semiconductor region where carriers generated through photo-electric conversion are collected as signal carriers. A readout portion includes a first-conductivity-type second semiconductor region extending in a depth direction such that the carriers collected in the first semiconductor region are read out to a front surface of the semiconductor substrate. A unit that reduces the amount of light incident on the second semiconductor region is provided.
    Type: Application
    Filed: December 13, 2010
    Publication date: November 29, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuichiro Yamashita, Masaya Ogino, Junji Iwata, Kentarou Suzuki
  • Patent number: 8289426
    Abstract: In an image pickup device with A/D converters at each column signal line, improvements in the A/D conversion speed and accuracy in image sensors having A/D converters are achieved. In an image pickup device wherein sensing elements are arranged in a matrix and A/D converters are arranged for each column signal line, the A/D converter first retains in its memory unit as an initial value an electric signal corresponding to the signal of the sensing element which is an analog signal, then initiates charge or discharge of the memory unit at a rate corresponding to the size of an input fixed signal, measures the time period from either the charge start time or the discharge start time until the memory unit electric signal becomes equal to the reference signal, and then recognizes the measured time period as a digital value.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: October 16, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Yamashita
  • Publication number: 20120236189
    Abstract: In an apparatus, operation is switchable between first and second modes. In the first mode, a photoelectric conversion part and a charge storage part are released from a reset state for all pixels included in an image acquisition area to start a period, and, when a predetermined time has elapsed, the photoelectric conversion part and an overflow drain region of each pixel are turned onto end the period, and finally the charge stored in the charge storage part is transferred to the amplifier part. In the second mode, after a mechanical shutter is opened to start a period, the mechanical shutter is closed to end the period, and stored charge is transferred to the amplifier part.
    Type: Application
    Filed: June 4, 2012
    Publication date: September 20, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Yamashita
  • Publication number: 20120199933
    Abstract: A solid-state image pickup device includes a plurality of pixels, each of the pixels including a photoelectric conversion portion, a charge holding portion, a floating diffusion, and a transfer portion. The pixel also includes a beneath-holding-portion isolation layer and a pixel isolation layer. An end portion on a photoelectric conversion portion side of the pixel isolation layer is away from the photoelectric conversion portion compared to an end portion on a photoelectric conversion portion side of the beneath-holding-portion isolation layer, and an N-type semi-conductor region constituting part of the photoelectric conversion portion is disposed under at least part of the beneath-holding-portion isolation layer.
    Type: Application
    Filed: September 29, 2010
    Publication date: August 9, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masahiro Kobayashi, Yuichiro Yamashita, Yusuke Onuki
  • Publication number: 20120199934
    Abstract: A solid-state image pickup device includes a photoelectric conversion portion, a charge holding portion configured to include a first-conductivity-type first semiconductor region, and a transfer portion configured to include a transfer gate electrode that controls a potential between the charge holding portion and a sense node. The charge holding portion includes a control electrode. A second-conductivity-type second semiconductor region is disposed on a surface of a semiconductor region between the control electrode and the transfer gate electrode. A first-conductivity-type third semiconductor region is disposed under the second semiconductor region. The third semiconductor region is disposed at a deeper position than the first semiconductor region.
    Type: Application
    Filed: October 6, 2010
    Publication date: August 9, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Onuki, Yuichiro Yamashita, Masahiro Kobayashi
  • Publication number: 20120194714
    Abstract: A solid-state image sensor includes a semiconductor region including a plurality of photoelectric converters from which signals are allowed to be independently read out; a first microlens; and a second microlens which is arranged between the first microlens and the semiconductor region, wherein the second microlens includes a central portion and a peripheral portion that surrounds the central portion, and a power of the peripheral portion is a positive value and larger than a power of the central portion.
    Type: Application
    Filed: January 3, 2012
    Publication date: August 2, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Yamashita