Patents by Inventor Nobuhiro Takeda

Nobuhiro Takeda 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).

  • Publication number: 20200252569
    Abstract: An image capture apparatus comprising a plurality of pixels, each pixel having a light-receiving circuit that outputs a pulse signal in response to incidence of a photon and a counting circuit configured to count the pulse signal, is disclosed. The image capture apparatus further comprises a detection circuit that detects whether or not a flickering light source is present in a field of view, based on an output frequency of the pulse signal.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 6, 2020
    Inventors: Satoshi Suzuki, Nobuhiro Takeda
  • Patent number: 10735678
    Abstract: There is provided an image sensor comprising: a pixel unit having a plurality of pixels; an A/D converter which converts an image signal from the pixel into a digital image signal; a gradation converter which performs a gradation conversion to the digital image signal; and a selector which selects gradation converting characteristics of the gradation conversion to the digital image signal performed by the gradation converter.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: August 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Patent number: 10511791
    Abstract: In an image capturing apparatus that comprises a pixel area of pixels arranged in a matrix, output circuits apply preset processing to signals read out in parallel from divided areas obtained by dividing the pixel area in a column direction and output the processed signals, a controller performs control to execute first driving for reading out signals corresponding to a predetermined voltage to the output circuits, and second driving for reading out image signals from the pixel area, and a correction circuit generates gain data based on the predetermined voltage for correcting differences between the signals for correction of different columns output for each of the divided areas, and corrects the image signals of the divided areas using the gain data generated for the corresponding divided areas.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: December 17, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Publication number: 20190368818
    Abstract: A heat exchanger includes a plurality of serpentine or U-shaped first heat transfer tubes disposed in a case and formed by connecting a plurality of straight tube body portions, which are arranged at intervals in an up-down height direction so as to extend in a horizontal direction, in series via a first connecting tube body portion, upper side and lower side header portions connected to respective end portions of the plurality of first heat transfer tubes, and a second heat transfer tube disposed in the case so that upper side and lower side end portions thereof are connected respectively to the upper side and lower side header portions and configured such that an intermediate region, which excludes at least the respective end portions and a region of an uppermost portion that is adjacent to the upper side end portion, is constituted by tube body portions that are tilted over the entire length thereof so as to gradually decrease in height from one end side toward another end side of the intermediate region.
    Type: Application
    Filed: May 21, 2019
    Publication date: December 5, 2019
    Applicant: NORITZ CORPORATION
    Inventors: Norihide WADA, Takeshi OHIGASHI, Nobuhiro TAKEDA
  • Patent number: 10484637
    Abstract: In a pixel section of an image sensor, pixels are arranged two-dimensionally, each of the pixels including an amplifier transistor that is connected to a power voltage and has a gate into which a voltage of a signal charge generated by a photoelectric conversion area is input and a selection transistor that is connected to the amplifier transistor and a signal line. The image sensor includes an AD conversion circuit having a reference transistor having a gate into which a ramp signal is input and a constant current source that is connected to the reference transistor and the signal line. The voltage of the ramp signal or a driving ability of the reference transistor changes depending on whether one selection transistor or a plurality of selection transistors is/are turned on per signal line to obtain a signal charge to be AD-converted.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: November 19, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Publication number: 20190327424
    Abstract: An image capturing apparatus comprises an image sensor including a plurality of pixels, each pixel being configured to include a sensor unit that outputs a signal pulse in response to a single photon being received, and a counter that counts the signal pulses and outputs a count value; and a control unit configured to control a pulsewidth of the signal pulses in accordance with shooting conditions of the image capturing apparatus or a state of the image capturing apparatus.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Inventors: Ken Sasaki, Nobuhiro Takeda
  • Publication number: 20190288150
    Abstract: An image sensor with a simple configuration that generates an image to which a filter has been applied is disclosed. An image sensor comprises a plurality of pixels, each pixel including a photoelectric converter that detects incidence of single photons; and a counter that counts pulses present in an output signal from the photoelectric converter. The image sensor outputs a count value as a pixel value, wherein the count value is obtained by counting the pulses present in the output signals from a plurality of the photoelectric converters in a first period, or by counting the pulses present in the output signal from a single photoelectric converter in the first period and a second period.
    Type: Application
    Filed: March 14, 2019
    Publication date: September 19, 2019
    Inventors: Yoshiaki Miyamoto, Nobuhiro Takeda, Masanori Tanaka
  • Publication number: 20190238781
    Abstract: In a pixel section of an image sensor, pixels are arranged two-dimensionally, each of the pixels including an amplifier transistor that is connected to a power voltage and has a gate into which a voltage of a signal charge generated by a photoelectric conversion area is input and a selection transistor that is connected to the amplifier transistor and a signal line. The image sensor includes an AD conversion circuit having a reference transistor having a gate into which a ramp signal is input and a constant current source that is connected to the reference transistor and the signal line. The voltage of the ramp signal or a driving ability of the reference transistor changes depending on whether one selection transistor or a plurality of selection transistors is/are turned on per signal line to obtain a signal charge to be AD-converted.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Patent number: 10368018
    Abstract: An image capturing apparatus comprises a pixel area having a plurality of pixels arranged in a matrix; output circuits that apply preset processing to signals read out in parallel from divided areas obtained by dividing the pixel area in a column direction and output the processed signals in parallel; a controller that performs control to execute first driving for reading out signals for obtaining correction data from the divided areas to the output circuits, and second driving for reading out image signals from the divided areas to the output circuits; and a correction circuit that obtains the correction data from the signals read out through the first driving and corrects the image signals using the correction data. The controller executes the first driving with respect to pixels in a part of rows that includes a row at a border of the divided areas.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: July 30, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda, Ken Sasaki
  • Patent number: 10362252
    Abstract: A solid-state image sensor includes a plurality of pixels arrayed in the row direction and the column direction, the first column signal line to which every other pixel arrayed in one pixel column is connected and the second column signal line to which remaining every other pixel arrayed in the one pixel array is connected, a pair of which are arranged for the one pixel column in the one pixel array; and a driver which drives the plurality of pixels arrayed in the one pixel column to simultaneously connect amplification transistors of a least two pixels to a same first column signal line on the same pixel column and simultaneously connect amplification transistors of at least two pixels to a same second column signal line on the same pixel column.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: July 23, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koji Oshima, Nobuhiro Takeda
  • Publication number: 20190195563
    Abstract: The heat exchange device includes a primary heat exchanger and a secondary heat exchanger. The secondary heat exchanger is disposed to overlap the primary heat exchanger in a vertical direction in a state in which the heat exchange device is installed. The secondary heat exchanger includes a plurality of first pipes and a plurality of second pipes. Each of the plurality of first pipes and the plurality of second pipes extends in a zigzag manner in the vertical direction by a plurality of linear portions being connected to a plurality of curved portions in series. Each of the plurality of linear portions of each of the plurality of second pipes is disposed to be displaced from each of the plurality of linear portions of each of the plurality of first pipes in the vertical direction.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 27, 2019
    Applicant: NORITZ CORPORATION
    Inventors: Takeshi Ohigashi, Masaki Kondo, Norihide Wada, Nobuhiro Takeda
  • Patent number: 10291869
    Abstract: In a pixel section of an image sensor, pixels are arranged two-dimensionally, each of the pixels including an amplifier transistor that is connected to a power voltage and has a gate into which a voltage of a signal charge generated by a photoelectric conversion area is input and a selection transistor that is connected to the amplifier transistor and a signal line. The image sensor includes an AD conversion circuit having a reference transistor having a gate into which a ramp signal is input and a constant current source that is connected to the reference transistor and the signal line. The voltage of the ramp signal or a driving ability of the reference transistor changes depending on whether one selection transistor or a plurality of selection transistors is/are turned on per signal line to obtain a signal charge to be AD-converted.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: May 14, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Patent number: 10277854
    Abstract: An image capturing apparatus includes: pixels that are arranged in a matrix and each include a photoelectric conversion portion; a column output line; an AD converter; a setting unit that sets a first driving mode for causing the AD converter to convert the analog signals into the digital signals with a resolution of n bits, or a second driving mode for causing the AD converter to convert the analog signals into the digital signals with a resolution of m bits; and a controller that controls an operation period, which extends from a start of outputting of the analog signals to a start of an operation of converting the analog signals into the digital signals, to be shorter when the setting unit has set the second driving mode than when the first driving mode has been set.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: April 30, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Ikedo, Nobuhiro Takeda
  • Publication number: 20190014281
    Abstract: A solid-state image sensor comprises: a plurality of pixels each provided with a sensor unit that generates a pulse signal at a frequency corresponding to a frequency of reception of photons; a first counter that counts a number of pulses generated by the sensor unit; and an output unit that outputs a signal corresponding to a count value counted by the first counter in a case where change in the number of pulses detected per unit time is greater than a threshold.
    Type: Application
    Filed: July 5, 2018
    Publication date: January 10, 2019
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Patent number: 10136093
    Abstract: A solid-state imaging apparatus comprises a pixel array, a first column output line provided for each column of the pixel array, a first constant current source, a scanning unit configured to select the pixel portions for each row, and a current control unit configured to control current values, wherein the scanning unit can switch between a normal readout mode and a mixing readout mode, and in the mixing readout mode, the current control unit controls the current values of the first column output lines so that the current value of the first column output line to which the signals of at least one color are simultaneously output is smaller than the current value of the first column output line to which the signals of another color are simultaneously output.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: November 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Tanaka, Nobuhiro Takeda, Teruyuki Okado
  • Patent number: 10094589
    Abstract: A fin-and-tube type heat exchanger includes: a plurality of plate fins arranged in a case side by side in a fore-and-aft direction of the case; and a heat transfer tube including a plurality of straight-type tubular bodies each passing through these plurality of plate fins. First and second plate fins arranged side by side in the right-and-left width direction of the case are provided as a plurality of plate fins. The heat transfer tube has a connection tubular body connecting the straight-type tubular bodies passing through the first and second plate fins. The heat transfer tube passes through areas in which the first and second plate fins are arranged.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: October 9, 2018
    Assignee: NORITZ CORPORATION
    Inventors: Takeshi Oohigashi, Nobuhiro Takeda, Masaki Kondo, Wataru Ooshita, Kosuke Ichiyama, Yukiko Noguchi
  • Publication number: 20180278878
    Abstract: In a pixel section of an image sensor, pixels are arranged two-dimensionally, each of the pixels including an amplifier transistor that is connected to a power voltage and has a gate into which a voltage of a signal charge generated by a photoelectric conversion area is input and a selection transistor that is connected to the amplifier transistor and a signal line. The image sensor includes an AD conversion circuit having a reference transistor having a gate into which a ramp signal is input and a constant current source that is connected to the reference transistor and the signal line. The voltage of the ramp signal or a driving ability of the reference transistor changes depending on whether one selection transistor or a plurality of selection transistors is/are turned on per signal line to obtain a signal charge to be AD-converted.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 27, 2018
    Inventors: Hirokazu Kobayashi, Nobuhiro Takeda
  • Patent number: 9955092
    Abstract: Disclosed is an image sensor in which a redundant member is appropriately provided, and an image capture apparatus using this image sensor. The image sensor has a memory that performs A/D conversion on a read pixel signal and holds this signal. The memory includes a first memory unit for holding a first pixel signal in pixel signals, and a second memory unit for holding a second pixel signal. Larger redundant storage capacity is provided in the first memory than in the second memory.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: April 24, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makiko Saito, Nobuhiro Takeda
  • Publication number: 20170374309
    Abstract: An image capturing apparatus includes: pixels that are arranged in a matrix and each include a photoelectric conversion portion; a column output line; an AD converter; a setting unit that sets a first driving mode for causing the AD converter to convert the analog signals into the digital signals with a resolution of n bits, or a second driving mode for causing the AD converter to convert the analog signals into the digital signals with a resolution of m bits; and a controller that controls an operation period, which extends from a start of outputting of the analog signals to a start of an operation of converting the analog signals into the digital signals, to be shorter when the setting unit has set the second driving mode than when the first driving mode has been set.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 28, 2017
    Inventors: Hideki Ikedo, Nobuhiro Takeda
  • Patent number: 9847061
    Abstract: An object of the present invention is to, in an organic EL display device in which an initialization voltage is applied, extend the time period usable to write a video voltage as compared with the conventional art. In order to achieve this object, the organic EL display device includes a plurality of pixels each including an organic EL element; a plurality of video lines that supply a video voltage to each of the plurality of pixels; a plurality of scanning lines that supply a scanning voltage to each of the plurality of pixels; a unit that supplies a selection scanning voltage concurrently to an N number of scanning lines among the plurality of scanning lines, and supplies an initialization voltage to each of the plurality of video lines, in a k'th scanning period; and a unit that supplies a selection scanning voltage sequentially to the N number of scanning lines, and supplies video voltages to each of the plurality of video lines, in (k+1)th through (k+N)th scanning periods respectively.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: December 19, 2017
    Assignee: Japan Display Inc.
    Inventor: Nobuhiro Takeda