Patents by Inventor Hiroaki Ebihara

Hiroaki Ebihara 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: 9288411
    Abstract: The present technology relates to an image sensor and a control method for an image sensor which are capable of measuring illuminance of each color in an image sensor. Each of a plurality of pixel units includes a pixel and a reset transistor, and the pixel includes a photoelectric converting unit that performs photoelectric conversion on light of a certain color incident through a color filter and a transfer transistor that transfers charges obtained by the photoelectric conversion of the photoelectric converting unit and is controllable for each color. According to control of the transfer transistor, the charges are read from the photoelectric converting unit through the transfer transistor and the reset transistor, and a voltage corresponding to the charges is supplied to an AD converting unit connected to the reset transistor. The present technology can be applied to, for example, an image sensor that photographs an image.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: March 15, 2016
    Assignee: SONY CORPORATION
    Inventors: Koichi Okamoto, Rei Yoshikawa, Hiroaki Ebihara
  • Publication number: 20160011042
    Abstract: An imaging device includes an exposure control unit, a determination unit, and an illuminance calculation unit. The exposure control unit is configured to control a plurality of exposure times. The determination unit is configured to determine whether or not saturation occurs using at least one data item of a plurality of data items obtained during the plurality of exposure times. The illuminance calculation unit is configured to calculate, if the determination unit determines that the saturation occurs, an illuminance using a data item different from the at least one data item used in the determination.
    Type: Application
    Filed: September 24, 2015
    Publication date: January 14, 2016
    Inventors: Kazuhide Namba, Youji Sakioka, Hiroaki Ebihara, Daisuke Yoshioka, Ryota Moriwaka
  • Publication number: 20160014355
    Abstract: A signal processing device includes a control unit that suspends supplying of a signal to an A/D conversion unit which performs A/D conversion, during an A/D conversion period in which the A/D conversion is performed on the signal that depends on an electric charge read from a pixel; and a maintenance unit that maintains a signal value of the signal in a state where the signal is supplied by the control unit to the A/D conversion unit and that supplies the maintained signal value to the A/D conversion unit in a state where the supplying of the signal to the A/D conversion unit is suspended by the control unit.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Inventors: Satoshi Ogata, Rei Yoshikawa, Hiroaki Ebihara
  • Patent number: 9237287
    Abstract: A solid-state imaging device including a photoelectric conversion portion, plural signal lines including a transfer signal line to which a transfer signal for reading signal charge accumulated in the photoelectric conversion portion to a floating diffusion region is input, a driver circuit inputting desired signals into the plural signal lines, and a terminal circuit connected to a side opposite to a side of the transfer signal line where the driver circuit is connected and to which a control signal for securing the transfer signal line at a constant voltage is input before a desired signal of is input to the signal line adjacent to the transfer signal line.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: January 12, 2016
    Assignee: SONY CORPORATION
    Inventors: Yoshiharu Kudoh, Hiroaki Ebihara
  • Publication number: 20150381916
    Abstract: A solid-state imaging device including a photoelectric conversion portion photoelectrically converting incident light into signal charge and accumulate the signal charge, a plurality of signal lines including a transfer signal line to which a transfer signal for reading the signal charge accumulated in the photoelectric conversion portion to a floating diffusion region is input, a driver circuit inputting a plurality of desired signals into the plurality of signal lines including the transfer signal line, and a terminal circuit connected to a side opposite to a side of the transfer signal line where the driver circuit is connected and to which a control signal for securing the transfer signal line at a constant voltage is input before a desired signal of the plurality of desired signals with respect to a signal line adjacent to the transfer signal line of the plurality of signal lines is input to the signal line adjacent to the transfer signal line.
    Type: Application
    Filed: September 4, 2015
    Publication date: December 31, 2015
    Inventors: Yoshiharu Kudoh, Hiroaki Ebihara
  • Patent number: 9160940
    Abstract: A signal processing device includes a control unit that suspends supplying of a signal to an A/D conversion unit which performs A/D conversion, during an A/D conversion period in which the A/D conversion is performed on the signal that depends on an electric charge read from a pixel; and a maintenance unit that maintains a signal value of the signal in a state where the signal is supplied by the control unit to the A/D conversion unit and that supplies the maintained signal value to the A/D conversion unit in a state where the supplying of the signal to the A/D conversion unit is suspended by the control unit.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: October 13, 2015
    Assignee: Sony Corporation
    Inventors: Satoshi Ogata, Rei Yoshikawa, Hiroaki Ebihara
  • Patent number: 9157794
    Abstract: An imaging device includes an exposure control unit, a determination unit, and an illuminance calculation unit. The exposure control unit is configured to control a plurality of exposure times. The determination unit is configured to determine whether or not saturation occurs using at least one data item of a plurality of data items obtained during the plurality of exposure times. The illuminance calculation unit is configured to calculate, if the determination unit determines that the saturation occurs, an illuminance using a data item different from the at least one data item used in the determination.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: October 13, 2015
    Assignee: Sony Corporation
    Inventors: Kazuhide Namba, Youji Sakioka, Hiroaki Ebihara, Daisuke Yoshioka, Ryota Moriwaka
  • Patent number: 9083352
    Abstract: An oscillator includes: inverters that are connected in a loop shape and of which the number is an odd number greater than or equal to three; and a delay section that delays change in a voltage which is input to one inverter of the odd number of inverters. The one inverter is a schmitt trigger inverter. The schmitt trigger inverter includes a current source, and a resistor in which current supplied by the current source flows. A hysteresis width of the schmitt trigger inverter depends on the current which flows in the resistor.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 14, 2015
    Assignee: Sony Corporation
    Inventors: Eiji Hirata, Hiroaki Ebihara
  • Patent number: 9025056
    Abstract: A solid-state imaging element includes: a pixel section having a plurality of pixels arranged in a matrix form, each of the pixels converting an optical signal into an electric signal and storing the electric signal according to exposure time; a dummy pixel section having dummy pixels arranged in a matrix form; and pixel drive sections adapted to control the pixel operations in such a manner as to operate an electronic shutter on and read the pixel section and dummy pixel section, wherein when an electronic rolling shutter is operated in which the pixels are shuttered row by row, the pixel drive sections judge whether the current and next frames are shuttered concurrently and in parallel so as to determine in which horizontal read period the dummy pixel section is to be shuttered.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: May 5, 2015
    Assignee: Sony Corporation
    Inventor: Hiroaki Ebihara
  • Publication number: 20150077609
    Abstract: The present technology relates to an image sensor and a control method for an image sensor which are capable of measuring illuminance of each color in an image sensor. Each of a plurality of pixel units includes a pixel and a reset transistor, and the pixel includes a photoelectric converting unit that performs photoelectric conversion on light of a certain color incident through a color filter and a transfer transistor that transfers charges obtained by the photoelectric conversion of the photoelectric converting unit and is controllable for each color. According to control of the transfer transistor, the charges are read from the photoelectric converting unit through the transfer transistor and the reset transistor, and a voltage corresponding to the charges is supplied to an AD converting unit connected to the reset transistor. The present technology can be applied to, for example, an image sensor that photographs an image.
    Type: Application
    Filed: April 23, 2013
    Publication date: March 19, 2015
    Applicant: SONY CORPORATION
    Inventors: Koichi Okamoto, Rei Yoshikawa, Hiroaki Ebihara
  • Patent number: 8830352
    Abstract: There is provided an image pickup device which eliminates the need for image processing different from one frame to another, and is capable of eliminating centroid displacement without additionally performing a centroid correction process, thereby improving an S/N ratio and image quality. A controller 140 sequentially reads signals from all pixels when an operation mode control signal designates all-pixel readout mode, whereas, controls to read a signal from a different pixel while varying a readout position from one field to another when the operation mode control signal designates selective readout mode, and a signal processing section 150 performs signal processing on a set of field data of a single field to output resultant data as frame data when the operation mode control signal designates all-pixel readout mode, whereas, adds up plural sets of field data over a plurality of fields to output resultant data as frame data when the operation mode control signal designates selective readout mode.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: September 9, 2014
    Assignee: Sony Corporation
    Inventors: Hiroaki Ebihara, Yoshikazu Nitta, Hirotaka Kitami
  • Patent number: 8810704
    Abstract: A solid-state image capture device includes: a pixel section in which pixels are arranged in a matrix; control lines; a pixel drive section that performs control, through the control lines, an operation of the pixels so as to perform a shutter operation of the pixel section and so as to perform reading; a reading circuit that reads signals from the pixels; and a shutter-mode switching section that controls an operation of the pixel drive section in accordance with a rolling shutter system in which exposure is performed for each row or a global shutter system in which exposure is simultaneously performed on all the pixels. The pixel drive section includes a shutter-mode corresponding section that causes an impedance value from the control lines to a power supply in a global shutter operation to be greater than an impedance value in a rolling shutter operation.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: August 19, 2014
    Assignee: Sony Corporation
    Inventor: Hiroaki Ebihara
  • Patent number: 8773580
    Abstract: A solid-state image pickup device includes a pixel array unit that includes photoelectric conversion elements and in which a plurality of pixels are arranged in rows and columns that output, as pixel signals, electrical signals obtained by photoelectric conversion performed by amplifier elements to which pixel power supply voltage is supplied and that drive signal lines, a pixel power supply unit that generates the pixel power supply voltage from power supply voltage, the pixel power supply voltage being lower than the power supply voltage, and that supplies the pixel power supply voltage to the amplifier elements in the plurality of pixels, and a pixel signal read unit that reads pixel signals from the plurality of pixels.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: July 8, 2014
    Assignee: Sony Corporation
    Inventors: Hiroaki Ebihara, Go Asayama
  • Publication number: 20140125972
    Abstract: An imaging device includes an exposure control unit, a determination unit, and an illuminance calculation unit. The exposure control unit is configured to control a plurality of exposure times. The determination unit is configured to determine whether or not saturation occurs using at least one data item of a plurality of data items obtained during the plurality of exposure times. The illuminance calculation unit is configured to calculate, if the determination unit determines that the saturation occurs, an illuminance using a data item different from the at least one data item used in the determination.
    Type: Application
    Filed: October 11, 2013
    Publication date: May 8, 2014
    Applicant: SONY CORPORATION
    Inventors: Kazuhide Namba, Youji Sakioka, Hiroaki Ebihara, Daisuke Yoshioka, Ryota Moriwaka
  • Publication number: 20140022427
    Abstract: There is provided a solid state imaging apparatus including a pixel array in which a plurality of unit pixels are arranged two-dimensionally. Each pixel includes a photoelectric conversion element, a transfer transistor which transfers a charge accumulated in the photoelectric conversion element to floating diffusion, a reset transistor which resets the charge of the floating diffusion, and an output transistor which outputs the charge of the floating diffusion. The floating diffusion of at least one of the plurality of unit pixels is electrically connected via the output transistor.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 23, 2014
    Inventors: Takayuki Goto, Hiroaki Ebihara, Rei Yoshikawa, Koichi Okamoto
  • Patent number: 8629923
    Abstract: A solid-state imaging element includes: a pixel section having a plurality of pixels arranged in a matrix form, each of the pixels converting an optical signal into an electric signal and storing the electric signal according to exposure time; a dummy pixel section having dummy pixels arranged in a matrix form; and pixel drive sections adapted to control the pixel operations in such a manner as to operate an electronic shutter on and read the pixel section and dummy pixel section, wherein when an electronic rolling shutter is operated in which the pixels are shuttered row by row, the pixel drive sections judge whether the current and next frames are shuttered concurrently and in parallel so as to determine in which horizontal read period the dummy pixel section is to be shuttered.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 14, 2014
    Assignee: Sony Corporation
    Inventor: Hiroaki Ebihara
  • Publication number: 20140002703
    Abstract: A solid-state imaging element includes: a pixel section having a plurality of pixels arranged in a matrix form, each of the pixels converting an optical signal into an electric signal and storing the electric signal according to exposure time; a dummy pixel section having dummy pixels arranged in a matrix form; and pixel drive sections adapted to control the pixel operations in such a manner as to operate an electronic shutter on and read the pixel section and dummy pixel section, wherein when an electronic rolling shutter is operated in which the pixels are shuttered row by row, the pixel drive sections judge whether the current and next frames are shuttered concurrently and in parallel so as to determine in which horizontal read period the dummy pixel section is to be shuttered.
    Type: Application
    Filed: August 28, 2013
    Publication date: January 2, 2014
    Applicant: SONY CORPORATION
    Inventor: Hiroaki Ebihara
  • Patent number: 8610809
    Abstract: A solid-state imaging device includes: a pixel unit in which plural pixels each having a photoelectric conversion element which converts light signals into electric signals and accumulates the electric signals according to exposure time are arranged in a matrix state; plural control lines for drive controlling the pixels; and a pixel drive unit controlling operation of the pixels to perform electronic shutter operation and reading of the pixel unit through the control lines, wherein the pixel drive unit includes a function of outputting read row selection signals and shutter row selection signals of row addresses of read rows from which signals are read and shutter rows from which charges accumulated in the photoelectric conversion elements are swept out and reset in accordance with address signals, and a function of selecting plural successive rows by designating the lowest address signal and the highest address signal.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: December 17, 2013
    Assignee: Sony Corporation
    Inventor: Hiroaki Ebihara
  • Publication number: 20130308008
    Abstract: A solid-state image pickup device including a pixel unit in which a plurality of photoelectric conversion elements having different sensitivities are arranged; and a pixel reading unit configured to read and add output signals from the plurality of photoelectric conversion elements in the pixel unit, and to obtain an output signal seemingly from one pixel. The pixel unit includes an absorbing unit configured to absorb overflowing electric charge from a photoelectric conversion element with a high sensitivity.
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: Sony Corporation
    Inventors: Eiichi Funatsu, Hiroaki Ebihara, Yoshiharu Kudoh
  • Publication number: 20130286265
    Abstract: A signal processing device includes a control unit that suspends supplying of a signal to an A/D conversion unit which performs A/D conversion, during an A/D conversion period in which the A/D conversion is performed on the signal that depends on an electric charge read from a pixel; and a maintenance unit that maintains a signal value of the signal in a state where the signal is supplied by the control unit to the A/D conversion unit and that supplies the maintained signal value to the A/D conversion unit in a state where the supplying of the signal to the A/D conversion unit is suspended by the control unit.
    Type: Application
    Filed: March 20, 2013
    Publication date: October 31, 2013
    Applicant: SONY CORPORATION
    Inventors: Satoshi Ogata, Rei Yoshikawa, Hiroaki Ebihara