Patents by Inventor Yoshitaka Egawa

Yoshitaka Egawa 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: 20210124047
    Abstract: A distance sensor according to an embodiment of the present disclosure includes: a controller that instructs a light source section to emit a first light pulse; a light receiver that includes a photodiode which causes a signal charge to be generated by receiving a first reflected light pulse corresponding to the first light pulse, and generates a light reception signal by storing the signal charge and converting the signal charge into a voltage; a signal change detector that performs a first detection operation of detecting a first signal change corresponding to the first reflected light pulse in the light reception signal; and a time measurement section that performs, on a basis of the first signal change, a first measurement operation of measuring a first time interval from an emission timing of the first light pulse in the light source section to a reception timing of the first reflected light pulse in the light receiver.
    Type: Application
    Filed: July 26, 2018
    Publication date: April 29, 2021
    Inventor: Yoshitaka Egawa
  • Publication number: 20210041534
    Abstract: An electronic apparatus for detecting distances from the electronic apparatus to external objects is provided, the apparatus comprising a substrate 551, a light receiving sensor of a distance measurement sensor 523 arranged over the substrate 511, one or more light sources 521, 522 arranged over the substrate 511, a first lens 32 arranged over a first light source 522 of the one or more light sources and arranged to direct light emitted by the first light source 522, a second lens 33 arranged over the light receiving sensor and configured to direct light received by the second lens 33 onto the light receiving sensor of the distance measurement sensor 523, and a transparent member 553 arranged between the second lens 33 and the light receiving sensor and configured to transmit the light directed by the second lens 33 onto the light receiving sensor, and reflect light from at least one 521 of the one or more light sources 521, 522 onto the light receiving sensor of the distance measurement sensor 523.
    Type: Application
    Filed: January 16, 2019
    Publication date: February 11, 2021
    Applicant: Sony Semiconductor Solutions Corporation
    Inventor: Yoshitaka Egawa
  • Publication number: 20160148960
    Abstract: According to one embodiment, a photoelectric converting layer, a charge accumulating layer, and a light collecting unit are provided. The photoelectric converting layer is formed at a back surface side of a semiconductor substrate. The charge accumulating layer is formed at a front surface side of the semiconductor substrate, and accumulates charges photoelectric-converted by the photoelectric converting layer. The light collecting unit makes light incident to the back surface side of the semiconductor substrate to be collected on the photoelectric converting layer not to be incident to the charge accumulating layer.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 26, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka EGAWA
  • Patent number: 9287302
    Abstract: According to one embodiment, pixels are divided by a grid set diagonally to a column direction, a green photoelectric conversion film is provided for each of the pixels and arranged to overlap a red photoelectric conversion layer in a depth direction, and a blue photoelectric conversion layer is arranged to be overlapped by the green photoelectric conversion film in a depth direction.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: March 15, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Patent number: 9252177
    Abstract: According to one embodiment, a solid state image sensor has a photoelectric conversion element array, a light collecting optical element array, wavelength-selective elements and a reflecting unit. Wavelength-selective elements pass light of the color which is to be detected, and reflect other colors. The reflecting unit further reflects the light that has been reflected by the wavelength-selective elements. The cell includes photoelectric conversion elements for three different light colors. A microlens serving as a light collecting optical element is arranged corresponding to the cell. The reflecting unit includes at least a first reflecting surface and a second reflecting surface. The first reflecting surface faces the wavelength-selective elements. In every cell, the second reflecting surface is enclosed between wavelength-selective elements and the first reflecting surface.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: February 2, 2016
    Assignee: Kabuhiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Patent number: 9219096
    Abstract: According to one embodiment, a photoelectric converting layer, a charge accumulating layer, and a light collecting unit are provided. The photoelectric converting layer is formed at a back surface side of a semiconductor substrate. The charge accumulating layer is formed at a front surface side of the semiconductor substrate, and accumulates charges photoelectric-converted by the photoelectric converting layer. The light collecting unit makes light incident to the back surface side of the semiconductor substrate to be collected on the photoelectric converting layer not to be incident to the charge accumulating layer.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 22, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Publication number: 20150358569
    Abstract: According to one embodiment, a solid-state imaging device includes a pixel that includes a photoelectric conversion unit accumulating charges obtained by photoelectric conversion, the photoelectric conversion unit being disposed in a semiconductor substrate, a photo gate that controls potential of the photoelectric conversion unit from a plane opposite to a light incident plane of the photoelectric conversion unit, a voltage converting unit that converts signal charges read from the photoelectric conversion unit into a voltage, and a conversion capacity control unit that controls a conversion capacity of the voltage converting unit.
    Type: Application
    Filed: February 18, 2015
    Publication date: December 10, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka EGAWA
  • Publication number: 20150358562
    Abstract: According to one embodiment, pixels each in which first and second photoelectric conversion units each of which accumulate charges obtained by photoelectric conversion are arranged to be adjacent in a certain direction are arranged in a row direction and a column direction in a form of a matrix, micro lenses each of which is shared by the first and second photoelectric conversion units, and a read timing is controlled such that a read order of the first photoelectric conversion units and the second photoelectric conversion units in first and second lines of a same color is changed.
    Type: Application
    Filed: February 23, 2015
    Publication date: December 10, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka EGAWA
  • Publication number: 20150334323
    Abstract: According to one embodiment, a solid-state imaging device includes a division transistor that divides a voltage converting unit that converts charges generated by a photo diode into a voltage into a first voltage converting unit at a read transistor side and a second voltage converting unit at an amplifying transistor side.
    Type: Application
    Filed: March 3, 2015
    Publication date: November 19, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka EGAWA
  • Publication number: 20150312491
    Abstract: Provided is a solid-state imaging device which is capable of improving an image quality by changing a signal charge voltage conversion gain and performing a binning operation. According to one embodiment, a solid-state imaging device includes a pixel array unit including pixels that accumulate charges obtained by photoelectric conversion and are arranged in a row direction and a column direction in a form of a matrix and a switching transistor that is disposed between pixels and capable of changing a signal charge voltage conversion gain of a pixel and performing a binning operation.
    Type: Application
    Filed: February 23, 2015
    Publication date: October 29, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka EGAWA
  • Patent number: 9159756
    Abstract: According to one embodiment, there is a solid-state imaging device including an imaging region. In the imaging region, a plurality of pixels are arranged two-dimensionally. A first inclination angle of a light incidence surface of a dichroic filter in a first pixel among the plurality of pixels relative to a normal to a surface of a semiconductor substrate and a second inclination angle of a light incidence surface of a dichroic filter in a second pixel located farther from a center of the imaging region than the first pixel among the plurality of pixels relative to the normal are decided on so as to make, for light incident on the imaging region, a filter property of the dichroic filter in the first pixel and a filter property of the dichroic filter in the second pixel equalized.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: October 13, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koichi Kokubun, Yoshitaka Egawa
  • Publication number: 20150206911
    Abstract: According to one embodiment, there is a solid-state imaging device including an imaging region. In the imaging region, a plurality of pixels are arranged two-dimensionally. A first inclination angle of a light incidence surface of a dichroic filter in a first pixel among the plurality of pixels relative to a normal to a surface of a semiconductor substrate and a second inclination angle of a light incidence surface of a dichroic filter in a second pixel located farther from a center of the imaging region than the first pixel among the plurality of pixels relative to the normal are decided on so as to make, for light incident on the imaging region, a filter property of the dichroic filter in the first pixel and a filter property of the dichroic filter in the second pixel equalized.
    Type: Application
    Filed: June 2, 2014
    Publication date: July 23, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koichi KOKUBUN, Yoshitaka EGAWA
  • Patent number: 9087444
    Abstract: An interlocking source alarm output processing unit outputs alarm indicating an interlocking source and transmits event signal indicating the abnormality to other alarm device. An interlocking destination alarm output processing unit outputs alarm indicating an interlocking destination. An interlocking source alarm stop processing unit transmits the event signal and stops an output of the alarm, upon detecting an operation to an alarm stopping unit while outputting the alarm indicating the interlock source. An interlocking destination alarm stop processing unit stops an output of the alarm indicating the interlocking destination and transmits the event signal for stopping the alarm, when an operation to the alarm stopping unit is detected while outputting the alarm indicating the interlocking destination, while the interlocking destination alarm stop processing unit stops an output of the alarm indicating the interlocking destination, when the event signal from the other alarm device is received.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: July 21, 2015
    Assignee: Hochiki Corporation
    Inventors: Yoshitaka Egawa, Hidenari Matsukuma
  • Publication number: 20150162368
    Abstract: According to one embodiment, pixels are divided by a grid set diagonally to a column direction, a green photoelectric conversion film is provided for each of the pixels and arranged to overlap a red photoelectric conversion layer in a depth direction, and a blue photoelectric conversion layer is arranged to be overlapped by the green photoelectric conversion film in a depth direction.
    Type: Application
    Filed: August 8, 2014
    Publication date: June 11, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka EGAWA
  • Publication number: 20150163464
    Abstract: According to one embodiment, a pixel array unit includes a matrix of first and second two-pixel green photoelectric conversion layers that are arranged obliquely with respect to a column direction, a two-pixel blue photoelectric conversion that is arranged adjacent to the first and second green photoelectric conversion layers, and a red photoelectric conversion layer that overlaps the blue photoelectric conversion layer in a depth direction. A green filter that is provided consecutively for two pixels on the first and second green photoelectric conversion layers, and a magenta filter or a white filter is provided consecutively for two pixels on the blue photoelectric conversion layer.
    Type: Application
    Filed: August 11, 2014
    Publication date: June 11, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka EGAWA, Hirofumi Yamashita, Ai Shimomura
  • Patent number: 8970751
    Abstract: According to one embodiment, an image sensor, which is a solid imaging device, includes a photoelectric conversion element array, a condensing optical element array, filter and reflector units, and a reflective unit. The reflective unit further reflects a light reflected by the filter and reflector units. The condensing optical element is arranged so that it contains a first photoelectric conversion element and a portion of a second or a third photoelectric conversion element, which are adjacent to the first photoelectric conversion element. The arrangement of the photoelectric conversion elements may comprise a cell. The reflective unit includes at least a first reflective surface and a second reflective surface. The first reflective surface is opposite to the filter and reflector units. The second reflective surface surrounds the filter and reflector units and the first reflective surface for each cell.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: March 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Patent number: 8947568
    Abstract: According to one embodiment, a solid-state imaging device includes an imaging area, a vertical line drive circuit, and a control circuit. The imaging area is provided with a plurality of unit pixels arrayed like a two-dimensional matrix. Each unit pixel includes a photoelectric conversion element, a read transistor, an amplifier transistor, and a reset transistor. The vertical line drive circuit is configured to select and drive the unit pixels at a unit of row, and to set a signal storage time of the photoelectric conversion element of each driven unit pixel. The control circuit connected to the vertical line drive circuit, is configured to execute a variable control of the signal storage time at a unit of row of the unit pixel.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Patent number: 8941200
    Abstract: According to one embodiment, provided are a first photoelectric conversion layer provided for a first wavelength band, a second photoelectric conversion layer provided for a second wavelength band, and a color separation element adapted to separate an incident light into a transmission light including the first wavelength band and a reflection light including the second wavelength band, wherein an angle of incidence of the incident light with respect to a reflection surface of the color separation element is set so that a vertically polarized light and a horizontally polarized light are included in the reflection light.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: January 27, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Patent number: 8885084
    Abstract: According to one embodiment, a solid-state imaging device includes a pixel array unit where pixels are disposed in a matrix and a column amplifying circuit that is disposed at an end of the pixel array unit and amplifies a unit signal of a unit pixel read from each pixel with at least first and second amplification factors, and outputs a plurality of amplified signals.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: November 11, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Egawa
  • Publication number: 20140320713
    Abstract: According to one embodiment, a solid-state imaging device includes a pixel array unit where pixels are disposed in a matrix and a column amplifying circuit that is disposed at an end of the pixel array unit and amplifies a unit signal of a unit pixel read from each pixel with at least first and second amplification factors, and outputs a plurality of amplified signals.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 30, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yoshitaka Egawa