Patents by Inventor Toru Koizumi

Toru Koizumi 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: 20090213260
    Abstract: An object of the invention is to cause a part of charge spilling from a photoelectric conversion unit to flow into a charge holding unit and thereby extend dynamic range and at the same time improve image quality. There is provided a solid-state image pickup device having a pixel including: a photoelectric conversion unit generating and accumulating charge by means of photoelectric conversion; a first charge holding unit being shielded from light, and being adaptable to accumulate a part of charge spilling from the photoelectric conversion unit in a period during which the photoelectric conversion unit generates and accumulates charge; an amplifying unit (SF-MOS) amplifying charge; a first transfer unit (Tx-MOS) transferring the charge accumulated in the photoelectric conversion unit to the amplifying unit; and a second transfer unit (Ty-MOS) transferring the charge accumulated in the first charge holding unit to the amplifying unit.
    Type: Application
    Filed: April 29, 2009
    Publication date: August 27, 2009
    Applicant: Canon Kabushiki Kaisha
    Inventors: TORU KOIZUMI, Akira Okita, Katsuhito Sakurai, Isamu Ueno
  • Publication number: 20090207293
    Abstract: An image sensing apparatus comprises: an output unit which includes an output line group, a plurality of difference circuits, a first dummy line, and a second dummy line, and wherein the output line group is interposed between the first dummy line and the second dummy line, a readout unit includes a plurality of memory circuits, each of the plurality of memory circuits includes a first holding capacitance and a second holding capacitance, a gain determined by a ratio of a capacitance value of the first holding capacitance and a capacitance value of a first output line is applied to the first signal output to the first output line, and a gain determined by a ratio of a capacitance value of the second holding capacitance and a capacitance value of a second output line is applied to the second signal output to the second output line.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 20, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Ryoki, Toru Koizumi
  • Patent number: 7576788
    Abstract: The output voltages of dark pixels and optical black (OB) pixels are different between a row including a pixel which receives strong light and another row. An image formed upon receiving a strong light spot suffers whitish bands on the right and left of the spot. To solve this problem, this invention provides an image pickup apparatus including a pixel containing a photodiode which converts a photo-signal into a signal charge and accumulates the signal charge and an amplifier transistor which amplifies the signal charge accumulated in the photodiode, and a control element adapted to limit the output of the amplifier transistor so as to prevent the output from falling to below a predetermined voltage.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: August 18, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhito Sakurai, Toru Koizumi, Fumihiro Inui, Hiroki Hiyama, Masaru Fujimura, Tomoko Eguchi
  • Patent number: 7554591
    Abstract: A photoelectric conversion apparatus includes a pixel unit having a plurality of pixels arranged in a matrix, a plurality of block lines to which signals are supplied from the pixels, transfer switches used to supply the signals from the block lines to a common signal line, and a driving circuit configured to drive the pixels, the block lines, and the transfer switches. The block lines have resetting units used to reset potentials of the block lines. With this configuration, a signal reading operation is performed at high speed in the photoelectric conversion apparatus.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: June 30, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Kikuchi, Toru Koizumi
  • Publication number: 20090159783
    Abstract: A photoelectric conversion apparatus includes a first block line through which an optical signal is output and a second block line through which a noise signal superimposed on the optical signal is output. The photoelectric conversion apparatus also includes a switch used to control a connection between the fist block line and the second block line.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 25, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toru Koizumi, Hideaki Takada, Masanori Ogura, Seiichirou Sakai
  • Patent number: 7550793
    Abstract: The image pickup device of the invention has a path deeper in a semiconductor substrate, than a region wherein a channel is formed, upon turning on a first MOS transistor, under a gate thereof. The path is arranged by forming a P-type layer for forming a potential barrier, within a P-type well excluding a region below the gate of the first MOS transistor. Thus, even when the first transfer MOS transistor is securely turned off at accumulation, carriers overflowing from a photodiode can flow into the path, thereby enabling to accumulate the carriers, overflowing from the photodiode, in a carrier accumulation region. Such structure allows to suppress a dark current generation from an interface of a gate oxide film of the first transfer MOS transistor, and also to expand the dynamic range of the image pickup device by the carriers overflowing from the photodiode and flowing through the path into the carrier accumulation region.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: June 23, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Itano, Toru Koizumi, Shin Kikuchi, Akira Okita, Masanori Ogura
  • Patent number: 7547871
    Abstract: A photoelectric conversion device formed on a single semiconductor substrate, including: a plurality of photoelectric conversion elements; a read-out circuit including a switch for reading out analog signals from the photoelectric conversion elements; a buffer circuit for driving the switch; and a logic circuit for processing digital signals. A first semiconductor area to which a ground level for the buffer circuit is supplied and a second semiconductor area to which a ground level for the logic circuit is supplied are electrically separated from each other.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: June 16, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Hiyama, Toru Koizumi, Katsuhito Sakurai, Masaru Fujimura
  • Patent number: 7545426
    Abstract: There is provided an image pickup apparatus comprising a plurality of pixels each including a photoelectric conversion unit which converts incident light into an electrical signal and accumulates the electrical signal, an amplifier transistor which amplifies and outputs the signal from the photoelectric conversion unit, a transfer transistor which transfers the electrical signal accumulated in the photoelectric conversion unit to the amplifier transistor, and a processing transistor which performs predetermined processing, and a control circuit which sets the signal level supplied to the control electrode of the transfer transistor in order to turn off the transfer transistor to be lower than the signal level supplied to the control electrode of the processing transistor in order to turn off the processing transistor.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: June 9, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Hiyama, Toru Koizumi, Katsuhito Sakurai, Fumihiro Inui, Masaru Fujimura, Tomoko Eguchi, Masanori Ogura
  • Patent number: 7538810
    Abstract: An object of the invention is to cause a part of charge spilling from a photoelectric conversion unit to flow into a charge holding unit and thereby extend dynamic range and at the same time improve image quality. There is provided a solid-state image pickup device having a pixel including: a photoelectric conversion unit generating and accumulating charge by means of photoelectric conversion; a first charge holding unit being shielded from light, and being adaptable to accumulate a part of charge spilling from the photoelectric conversion unit in a period during which the photoelectric conversion unit generates and accumulates charge; an amplifying unit (SF-MOS) amplifying charge; a first transfer unit (Tx-MOS) transferring the charge accumulated in the photoelectric conversion unit to the amplifying unit; and a second transfer unit (Ty-MOS) transferring the charge accumulated in the first charge holding unit to the amplifying unit.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: May 26, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Koizumi, Akira Okita, Katsuhito Sakurai, Isamu Ueno
  • Publication number: 20090128659
    Abstract: This invention provides an image pickup device comprising a plurality of pixels each including a photoelectric conversion unit, a semiconductor area to which a signal from the photoelectric conversion unit is transferred, a transfer switch for transferring the signal from the photoelectric conversion unit to the semiconductor area, and a read unit for reading out the signal from the semiconductor area, and a drive circuit for outputting a first level at which the transfer switch is set in an OFF state, a second level at which the transfer switch is set in an ON state, and a third level between the first level and the second level, wherein the drive circuit controls to hold the third level for a predetermined time while the transfer switch is changing from the ON state to the OFF state.
    Type: Application
    Filed: January 6, 2009
    Publication date: May 21, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toru Koizumi, Tetsunobu Kochi, Hiroki Hiyama
  • Publication number: 20090109314
    Abstract: A solid state image pickup device which can prevent color mixture by using a layout of a capacitor region provided separately from a floating diffusion region and a camera using such a device are provided. A photodiode region is a rectangular region including a photodiode. A capacitor region includes a carrier holding unit and is arranged on one side of the rectangle of the photodiode region as a region having a side longer than the one side. In a MOS unit region, an output unit region including an output unit having a side longer than the other side which crosses the one side of the rectangle of the photodiode region is arranged on the other side. A gate region and the FD region are arranged between the photodiode region and the capacitor region.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 30, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toru Koizumi, Akira Okita, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
  • Publication number: 20090104729
    Abstract: At least one exemplary embodiment is directed to a solid state image sensor including at least one antireflective layer and/or non rectangular shaped wiring layer cross section to reduce dark currents and 1/f noise.
    Type: Application
    Filed: October 13, 2008
    Publication date: April 23, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toru Koizumi, Akira Okita, Tetsuya Itano, Sakae Hashimoto, Ryuichi Mishima
  • Publication number: 20090073291
    Abstract: To control the potential distribution generated in a well at the time of amplification and reduce a shading in a solid-state imaging device of amplification type, the amplification type solid-state imaging device of the present invention comprises a plurality of picture elements each including photoelectric conversion elements formed in a second conductivity type common well inside a first conductivity type substrate, wherein a plurality of well contacts are disposed inside a picture element array area.
    Type: Application
    Filed: November 5, 2008
    Publication date: March 19, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomoya Yoneda, Shigetoshi Sugawa, Toru Koizumi, Tetsunobu Kochi
  • Publication number: 20090073298
    Abstract: An image sensing apparatus comprises a pixel including, a column signal line, a readout circuit, an output line, and an output unit. The readout circuit includes a first accumulation unit, a first opening/closing unit, a second accumulation unit, a transmission unit, and a second opening/closing unit. A capacitance of the first accumulation unit is smaller than a capacitance of the second accumulation unit, and the signal held by the second accumulation unit is read out to the output unit based on the capacitance of the second accumulation unit and the capacitance of the output line.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 19, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: MASANORI OGURA, Toru Koizumi, Tatsuya Ryoki, Shin Kikuchi
  • Publication number: 20090062567
    Abstract: The present invention aims to provide a bis(phosphine) boronium salt to be used as a building block or the like for producing a diphosphine compound effective mainly for various kinds of transition metal-catalyzed reactions and further to provide a preferable production method of the bis(phosphine) boronium salt and a bis(phosphine) boronium salt to be produced by the production method. The present invention provides a bis(phosphine) boronium salt having the structure defined by the following formula (1).
    Type: Application
    Filed: January 30, 2007
    Publication date: March 5, 2009
    Applicants: Japan Science and Technology Agency, National University Corporation Chiba University
    Inventors: Kentaro Yamaguchi, Hiroshi Danjo, Toru Koizumi, Tsuneo Imamoto
  • Publication number: 20090009638
    Abstract: A solid-state imaging apparatus of a dynamic range enlarged by reading out a carrier accumulated in a carrier accumulation unit at a plurality of times during a single carrier accumulation time period.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 8, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Toru Koizumi
  • Patent number: 7466003
    Abstract: A solid state image pickup device that can properly widen a dynamic range is provided. Carriers that have overflowed from photodiodes (1003a to 1003c) to lateral overflow regions (1010a to 1010c) and carriers accumulated in the photodiodes (1003a and 1003b) are transferred to FD regions (1005a to 1005c). Signals based on those carriers are added and held in a signal level holding capacitor (Cs) and read out therefrom, thereby widening the dynamic range.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: December 16, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isamu Ueno, Toru Koizumi, Akira Okita, Katsuhito Sakurai
  • Patent number: 7460162
    Abstract: A solid state image pickup device which can prevent color mixture by using a layout of a capacitor region provided separately from a floating diffusion region and a camera using such a device are provided. A photodiode region is a rectangular region including a photodiode. A capacitor region includes a carrier holding unit and is arranged on one side of the rectangle of the photodiode region as a region having a side longer than the one side. In a MOS unit region, an output unit region including an output unit having a side longer than the other side which crosses the one side of the rectangle of the photodiode region is arranged on the other side. A gate region and the FD region are arranged between the photodiode region and the capacitor region.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: December 2, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Koizumi, Akira Okita, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
  • Patent number: 7456882
    Abstract: An image pickup device includes pixels each including a photoelectric conversion unit and a transfer switch for transferring a photoelectric conversion signal generated by the photoelectric conversion unit, and a driver for applying a pulse to the transfer switch a plurality of times when the signal generated by the photoelectric conversion unit is transferred via the transfer switch.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: November 25, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Hiyama, Shigetoshi Sugawa, Isamu Ueno, Toru Koizumi, Tetsunobu Kochi, Katsuhito Sakurai, Yuichiro Yamashita, Tomoya Yoneda
  • Patent number: 7453109
    Abstract: At least one exemplary embodiment is directed to a solid state image sensor including at least one antireflective layer and/or non rectangular shaped wiring layer cross section to reduce dark currents and 1/f noise.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: November 18, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Koizumi, Akira Okita, Tetsuya Itano, Sakae Hashimoto, Ryuichi Mishima