Patents by Inventor Tadao Endo

Tadao Endo 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: 6297493
    Abstract: A photoelectric converter includes a plurality of substrates, which are located adjacent to each other and on which a plurality of photoelectric conversion devices are two-dimensionally arranged, either scan circuits or detection circuits, at least, that are arranged on two opposing sides of the photoelectric converter, whereby scanning directions either from the scan circuits or from the detection circuits, which are arranged on the two opposing sides, are capable of being set so as to be performed in like directions.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: October 2, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kobayashi, Noriyuki Kaifu, Shinichi Takeda, Kazuaki Tashiro, Tadao Endo, Toshio Kameshima
  • Patent number: 6268452
    Abstract: Provided is an industrially advantageous process for producing allylamine polymers from various allylamines in an organic solvent with ease and at high yields, and the process comprises polymerizing allylamines in a medium containing an organic solvent in the presence of an azo compound selected from azo compounds of the formulae (I) and (II), wherein symbols are as defined in the specification.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: July 31, 2001
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Tadashi Kato, Yasuhito Nakata, Tadao Endo, Ikuo Hayashi
  • Patent number: 6239439
    Abstract: A radiation detecting device having a wavelength converter for converting radiation into photoelectrically convertible light and a plurality of pixels arranged in the form of a matrix which pixel comprises a sensor element for converting the light into an electric signal and a thin film transistor (TFT) for transfer connected to the sensor element to successively transfer a signal from the pixel, the detecting device comprises a means for turning on the TFT to be turned on first among the TFTs for transfer after the delay of at least (n×&tgr;1), wherein &tgr;1 is a time constant of a characteristic of the wavelength converter, and n is ln(SN) in which SN is a desired signal to noise ratio, after the irradiation is stopped, thereby transferring a signal stored in its corresponding pixel.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: May 29, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Itabashi, Tadao Endo
  • Patent number: 6118851
    Abstract: An X-ray image pickup device has a two-dimensional image reading device which is constituted by two-dimensionally forming a plurality of photoelectric conversion elements on an insulating substrate, and has switching elements in the vicinities of these photoelectric conversion elements, a phosphor which is formed on the two-dimensional image reading device and serves as a wavelength converter for converting X-ray radiation into visible light, and a grid plate which is formed on the phosphor and guides only X-rays from a specific direction toward the phosphor and the two-dimensional image reading device, whereby a next-generation X-ray image pickup device which can improve diagnostic efficiency that cannot be attained by the conventional film method, and has a high space factor and a high S/N ratio that cannot be attained by the CCD method can be provided.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: September 12, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadao Endo, Noriyuki Kaifu, Shinichi Takeda, Kazuaki Tashiro, Isao Kobayashi, Toshio Kameshima
  • Patent number: 6080997
    Abstract: An electromagnetic-wave detector having an electromagnetic-wave detection unit having the structure that M (M.gtoreq.1) contiguous pairs of a metallic layer and an insulating layer are provided at the side of incidence of an electromagnetic-wave, such as X-rays.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: June 27, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuaki Tashiro, Noriyuki Kaifu, Shinichi Takeda, Isao Kobayashi, Tadao Endo, Toshio Kameshima
  • Patent number: 6049074
    Abstract: In a photoelectric conversion device including peripheral ICs, the peripheral ICs are in thermal contact with a substrate having photoelectric conversion elements and a chassis, which covers the peripheral ICs and has high thermal conductivity, via a thermal conductive member, so as to eliminate adverse influences of heat produced by the peripheral ICs such as a low S/N ratio.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: April 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadao Endo, Akira Funakoshi, Akira Tago, Shinichi Takeda, Eiichi Takami, Masakazu Morishita, Shinichi Hayashi, Chiori Mochizuki, Toshikazu Tamura, Minoru Watanabe
  • Patent number: 6034406
    Abstract: A photoelectric conversion apparatus comprises a plurality of photoelectric conversion elements arranged two-dimensionally on a substrate wherein the X-ray or light incidence side of some proper one or ones of the photoelectric conversion elements S13 is covered with a shielding member whose transmittance to an X-ray or light is equal to zero or substantially zero so that the photoelectric conversion elements covered with the shielding member act as correction photoelectric conversion elements thereby achieving an improvement in production yield, a reduction in cost, and a reduction in the time required to read the correction output signals, and also high performance capable of obtaining a moving picture.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: March 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kobayashi, Noriyuki Kaifu, Toshiaki Sato, Satoshi Itabashi, Tadao Endo, Toshio Kameshima
  • Patent number: 5965872
    Abstract: In a photoelectric conversion device including peripheral ICs, the peripheral ICs are in thermal contact with a substrate having photoelectric conversion elements and a chassis, which covers the peripheral ICs and has high thermal conductivity, via a thermal conductive member, so as to eliminate adverse influences of heat produced by the peripheral ICs such as a low S/N ratio.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: October 12, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadao Endo, Akira Funakoshi, Akira Tago, Shinichi Takeda, Eiichi Takami, Masakazu Morishita, Shinichi Hayashi, Chiori Mochizuki, Toshikazu Tamura, Minoru Watanabe
  • Patent number: 5914485
    Abstract: According to the present invention, a photoelectric converter comprises a plurality of substrates, which are located adjacent to each other and on which a plurality of photoelectric conversion devices are two-dimensionally arranged, either scan circuits or detection circuits, at least, that are arranged on two opposing sides of the photoelectric converter, whereby scanning directions either from the scan circuits or from the detection circuits, which are arranged on the two opposing sides, are capable of being set so as to be performed in like directions.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: June 22, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kobayashi, Noriyuki Kaifu, Shinichi Takeda, Kazuaki Tashiro, Tadao Endo, Toshio Kameshima
  • Patent number: 5912465
    Abstract: According to the present invention, provided is a photoelectric converter wherein mounted on substrate are a photoelectric conversion device array portion, which is so formed as to contact two adjacent sides, and a driving circuit portion, which is formed along the other two adjacent sides and that is connected to the photoelectric conversion device array portion, wherein four of the substrates are bonded together with two each being positioned vertically and horizontally, so that the photoelectric conversion device array portions lie adjacent to each other in a plane, and wherein the number, or the shape in a plane, of the photoelectric converter device arrays mounted on at least one of the four substrates differs from the number, or the shape in a plane, of the photoelectric conversion device arrays mounted on at least one of the other three substrates.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: June 15, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kobayashi, Noriyuki Kaifu, Shinichi Takeda, Kazuaki Tashiro, Tadao Endo, Toshio Kameshima
  • Patent number: 5856699
    Abstract: In a photoelectric conversion apparatus obtained by arranging and fixing a plurality of semiconductor element substrates onto a base with an adhesive, the levels of the upper surfaces of the substrates are adjusted with a desired thickness of the adhesive so as to set the upper surfaces within the same plane while the distance from the upper surface of the base to the semiconductor element surface of each substrate is kept to a design value, thereby realizing a photoelectric conversion apparatus constituted by a plurality of substrates arranged two-dimensionally, which eliminates level gaps between the substrate, and hence is free from problems such as a decrease in resolution, a deterioration in sensitivity, and peeling of a phosphor and the like.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: January 5, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Hayashi, Akira Funakoshi, Akira Tago, Satoshi Okada, Shinichi Takeda, Eiichi Takami, Masakazu Morishita, Chiori Mochizuki, Tadao Endo, Toshikazu Tamura
  • Patent number: 5811790
    Abstract: In a photoelectric conversion device including peripheral ICs, the peripheral ICs are in thermal contact with a substrate having photoelectric conversion elements and a chassis, which covers the peripheral ICs and has high thermal conductivity, via a thermal conductive member, so as to eliminate adverse influences of heat produced by the peripheral ICs such as a low S/N ratio.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: September 22, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadao Endo, Akira Funakoshi, Akira Tago, Shinichi Takeda, Eiichi Takami, Masakazu Morishita, Shinichi Hayashi, Chiori Mochizuki, Toshikazu Tamura, Minoru Watanabe
  • Patent number: 5801385
    Abstract: An X-ray image pickup device has a two-dimensional image reading device which is constituted by two-dimensionally forming a plurality of photoelectric conversion elements on an insulating substrate, and has switching elements in the vicinities of these photoelectric conversion elements, a phosphor which is formed on the two-dimensional image reading device and serves as a wavelength converter for converting X-ray radiation into visible light, and a grid plate which is formed on the phosphor and guides only X-rays from a specific direction toward the phosphor and the two-dimensional image reading device, whereby a next-generation X-ray image pickup device which can improve diagnostic efficiency that cannot be attained by the conventional film method, and has a high space factor and a high S/N ratio that cannot be attained by the CCD method can be provided.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: September 1, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadao Endo, Noriyuki Kaifu, Shinichi Takeda, Kazuaki Tashiro, Isao Kobayashi, Toshio Kameshima
  • Patent number: 5793047
    Abstract: A photoelectric conversion apparatus comprises a plurality of transparent substrates. Each of the substrates has a a plurality of photoelectric conversion elements on a front surface thereof on a base. A light-absorbing member is provided on at least one of a rear surface and end faces of the substrate.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: August 11, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kobayashi, Akira Funakoshi, Akira Tago, Noriyuki Kaifu, Shinichi Takeda, Eiichi Takami, Masakazu Morishita, Shinichi Hayashi, Chiori Mochizuki, Tadao Endo, Toshikazu Tamura, Kazuaki Tashiro
  • Patent number: 5777335
    Abstract: An imaging apparatus whose substrate or base stand is arranged to be a member to absorb or shield radiation in order to prevent semiconductor element, such as ICs, provided for driving photoelectric elements from making any malfunction or from being deteriorated by the irradiation of radiation, such as X-rays or .gamma.-rays, transmitted from the photoelectric conversion element substrate or base stand or in order to prevent radiation from being scattered.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: July 7, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Chiori Mochizuki, Akira Funakoshi, Akira Tago, Shinichi Takeda, Eiichi Takami, Masakazu Morishita, Shinichi Hayashi, Tadao Endo, Toshikazu Tamura
  • Patent number: 5335094
    Abstract: To eliminate non-read time in a photoelectric converting device, a photoelectric converting section is provided in which a plurality of photoelectric conversion elements, switching elements, matrix signal wirings, and gate drive wirings are arranged on the same substrate such that the photoelectric converting section generates parallel signals. A drive switching section is provided for applying drive signals to the gate drive wirings. A read switching section is provided for converting the parallel signals which are transferred from the matrix signal wirings into a serial signal, and for outputting the serial signal. The read switching section comprises a plurality of transfer switches respectively connected to the matrix signal wirings. The transfer switches are preferably activated together, simultaneously. A plurality of read capacitors are also provided in the read switching section to store the charges transferred through the matrix signal wirings.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: August 2, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Noriyuki Kaifu, Toshihiro Saika, Tadao Endo, Tetsuya Shimada
  • Patent number: 5324928
    Abstract: The present invention relates to a method of driving a thin film transistor type optical sensor, having a gate electrode, a gate insulating layer, a thin film semiconductor layer, an ohmic contact layer, a source electrode and a drain electrode.The thin film transistor type optical sensor is driven by providing the gate electrode with a threshold voltage for a thin film transistor provided adjacent to the thin film transistor type optical sensor or a voltage based on the threshold voltage.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: June 28, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Saika, Isao Kobayashi, Noriyuki Kaifu, Tadao Endo
  • Patent number: 5317406
    Abstract: An image reading device includes a plurality of photoelectric converting elements, a plurality of accumulating elements corresponding to each of the photoelectric converting elements, and switching circuitry for reading out the signals accumulated in the accumulating elements. Each of the photoelectric converting elements comprises a switching portion and a sensor portion. Driving circuitry is provided for driving the photoelectric converting elements by activating the switching portions to release the charges accumulated in the accumulating elements through the photoelectric converting elements in order to reset the accumulated elements.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: May 31, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isao Kobayashi, Noriyuki Kaifu, Toshihiro Saika, Tadao Endo
  • Patent number: 5272548
    Abstract: A photosensor with improved correction of image signals has a first photosensor portion including a plurality of photoelectric converting devices for reading an object and providing image signals thereof. A second photosensor portion includes a plurality of photoelectric converting devices and provides reference signals from light reflected from a reference member, or light received directly from a light source. Correction circuitry corrects the image signals from the first photosensor portion in accordance with the reference signals output from the second photosensor portion. Preferably, the photoelectric converting devices of the first and second photosensor portions are arranged in adjacent, parallel lines on the same substrate. Preferably, reference signals from the converting devices of the second photosensor are used by the correction circuitry to correct the electrical signals from substantially adjacent converting devices of the first photosensor portion.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: December 21, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsundo Kawai, Toshihiro Saika, Noriyuki Kaifu, Isao Kobayashi, Tadao Endo, Kouji Tomoda
  • Patent number: 5233442
    Abstract: A photosensor with improved correction of image signals has a first photosensor portion including a plurality of photoelectric converting devices for reading an object and providing image signals thereof. A second photosensor portion includes a plurality of photoelectric converting devices and provides reference signals from light reflected from a reference number, or light received directly from a light source. Correction circuitry corrects the image signals from the first photosensor portion in accordance with the reference signals output from the second photosensor portion. Preferably, the photoelectric converting devices of the first and second photosensor portions are arranged in adjacent, parallel lines on the same substrate. Preferably, reference signals from the converting devices of the second photosensor are used by the correction circuitry to correct the electrical signals from substantially adjacent converting devices of the first photosensor portion.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: August 3, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsundo Kawai, Toshihiro Saika, Noriyuki Kaifu, Isao Kobayashi, Tadao Endo, Kouji Tomoda