Patents by Inventor Mitsuru Tateuchi

Mitsuru Tateuchi 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: 9405406
    Abstract: An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight is emitted to a proximity object from an I/O display panel, an electric charge is accumulated in image pickup pixels in accordance with total light amount, including reflected light originating from the backlight and external environment light. Moreover, when the illumination light is not emitted, a discharging electric charge is released from the image pickup pixels in accordance with the amount of environment light. Thereby, an environment light component is subtracted from an image pickup signal obtained from each of the image pickup pixels, so object information about the proximity object is obtained without influence of the environment light. Moreover, in a light reception drive circuit, fewer frame memories for producing a picked-up image from the image pickup signal are necessary.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: August 2, 2016
    Assignee: Japan Display Inc.
    Inventors: Tsutomu Harada, Yoshiharu Nakajima, Michiru Senda, Kazunori Yamaguchi, Mitsuru Tateuchi, Ryoichi Tsuzaki, Toshikazu Maekawa
  • Publication number: 20150301689
    Abstract: An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight is emitted to a proximity object from an I/O display panel, an electric charge is accumulated in image pickup pixels in accordance with total light amount, including reflected light originating from the backlight and external environment light. Moreover, when the illumination light is not emitted, a discharging electric charge is released from the image pickup pixels in accordance with the amount of environment light. Thereby, an environment light component is subtracted from an image pickup signal obtained from each of the image pickup pixels, so object information about the proximity object is obtained without influence of the environment light. Moreover, in a light reception drive circuit, fewer frame memories for producing a picked-up image from the image pickup signal are necessary.
    Type: Application
    Filed: May 6, 2015
    Publication date: October 22, 2015
    Inventors: Tsutomu Harada, Yoshiharu Nakajima, Michiru Senda, Kazunori Yamaguchi, Mitsuru Tateuchi, Ryoichi Tsuzaki, Toshikazu Maekawa
  • Patent number: 9063613
    Abstract: An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight 15 is emitted to a proximity object from an I/O display panel 20, an electric charge for charging is accumulated in each of image pickup pixels 33 in accordance with total light amount as a summation of reflected light Lon originating from the illumination light and environment light (outside light) L0. Moreover, when the above-described illumination light is not emitted, an electric charge for discharging is released from each of the image pickup pixels 33 in accordance with light amount of the environment light L0. Thereby, a component by the environment light L0 is subtracted in an image pickup signal obtained from each of the image pickup pixels 33, so object information about the proximity object is obtainable without influence of the environment light L0.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: June 23, 2015
    Assignee: Japan Display Inc.
    Inventors: Tsutomu Harada, Yoshiharu Nakajima, Michiru Senda, Kazunori Yamaguchi, Mitsuru Tateuchi, Ryoichi Tsuzaki, Toshikazu Maekawa
  • Patent number: 8907928
    Abstract: An image display unit and a method of detecting an object which are capable of reliably detecting an object with a simple structure irrespective of use conditions are provided. Invisible light is emitted from a screen of a display portion. The invisible light reflected from a target object which comes in contact with or close to the screen is received on the screen. On the basis of the received invisible light, the target object is detected. Thus, the target object can be reliably detected without influence of the display state of the display portion, and influence of use conditions such as surrounding circumstances (the case where it is bright or dark). Moreover, for example, it is not necessary to separately arrange a component such as a touch panel, so the image display unit can be achieved with a simple structure.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: December 9, 2014
    Assignee: Japan Display West Inc.
    Inventors: Kazunori Yamaguchi, Hirotoshi Fujisawa, Tsutomu Harada, Mitsuru Tateuchi
  • Patent number: 8836670
    Abstract: An image processing apparatus which is allowed to achieve a higher speed of a labeling process than ever before is provided. Sequential scanning is performed on pixels in a picked-up image represented by binarized data Din. Moreover, during the sequential scanning, while label information representing an identification number for each connected region in the picked-up image is, as occasion arises, allocated to a target pixel based on values of pixel data of the target pixel and neighboring pixels thereof, additional information (position information and area information) for each connected region corresponding to each label information is updated as occasion arises. Thereby the label information, the position information and the area information about the whole picked-up image are obtained by one sequential scanning process.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: September 16, 2014
    Assignee: Japan Display, Inc.
    Inventors: Ryoichi Tsuzaki, Soichiro Kurokawa, Tsutomu Harada, Kazunori Yamaguchi, Mitsuru Tateuchi
  • Patent number: 8816992
    Abstract: A display device having at least a display circuit for displaying an image, and a light receiving sensor for detecting a light disposed is provided. When a light receiving circuit region including the light receiving sensor is made a dark portion, and a region other than the light receiving circuit region is made a light portion, the display circuit and the light receiving sensor are disposed so that a spatial frequency of a repetitive pattern of the light portions and the dark portions becomes equal to or higher than 10 cpd.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: August 26, 2014
    Assignee: Japan Display West Inc.
    Inventors: Mitsuru Tateuchi, Go Yamanaka, Tsutomu Harada, Takeru Tamayama, Masafumi Matsui
  • Patent number: 8797275
    Abstract: An HPF eliminates an image of an object which is not to be detected from a captured image, thereby obtaining an HPF image. A binarizing unit performs a binarizing process on the HPF image, thereby generating a binary image. A peak detector extracts, using the binary image as a mask, an image of a region corresponding to an opening of the mask from the captured image. From the image, a peak value and the position of a peak pixel are detected. A determining unit determines whether an object to be detected is in contact with the display surface or not on the basis of the relation between the difference and the threshold. Using the detection result and the determination result in the determining unit, a position deriving unit derives the position on the display surface, of the object to be detected which is in contact with the display surface.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: August 5, 2014
    Assignee: Japan Display West Inc.
    Inventors: Ryoichi Tsuzaki, Tsutomu Harada, Kazunori Yamaguchi, Mitsuru Tateuchi
  • Patent number: 8704804
    Abstract: A display apparatus and display method are provided. The display apparatus capable of displaying an image and receiving light simultaneously or alternately, the display apparatus including: a plurality of display devices laid out to form a matrix; a plurality of light receiving devices for receiving light hitting a display screen; a received-light image generation unit for generating image data representing the state of a substance brought into contact with the display screen or brought to a position in close proximity to the display screen; an image processing/evaluating unit for evaluating the position and size of a substance as well as evaluating changes in the position and in the size; and a command determination unit for recognizing a command entered by an operator. In the display apparatus, predetermined processing according to a command recognized by the command determination unit is carried out.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: April 22, 2014
    Assignee: Japan Display West Inc.
    Inventors: Kazunori Yamaguchi, Tsutomu Harada, Mitsuru Tateuchi
  • Publication number: 20140055042
    Abstract: Disclosed herein is a controlling apparatus for controlling an inputting and outputting apparatus of the active matrix driving type including pixels each having an electroluminescence element whose operation can be changed over between light emitting operation and light receiving operation in response to a voltage applied thereto, including: a removing section for removing, when the light receiving operation is to be performed by the electroluminescence element included in a predetermined pixel, charge accumulated. in a parasitic capacitance upon the light emitting operation performed immediately before the light receiving operation by the electroluminescence element; and a detection section for detecting light inputted from the outside to the inputting and outputting apparatus based on an output from the predetermined pixel including the electroluminescence element whose charge has been removed from the parasitic capacitance thereof by the removing section.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: Sony Corporation
    Inventor: Mitsuru Tateuchi
  • Patent number: 8638317
    Abstract: Disclosed herein is a display apparatus including: a display panel having a display function and a light-receiving/imaging function; a first image processing section configured to generate a detection signal that indicates whether a to-be-detected object has been detected based on a result of first image processing performed on an image taken by the light-receiving/imaging function; a second image processing section configured to perform second image processing on the image processed by the first image processing section, the second image processing having a heavier processing load than the first image processing; and a control section configured to control an operation of the second image processing section in accordance with the detection signal generated by the first image processing section, and, when it is determined that the processing by the second image processing section is not necessary, control the second image processing section to enter a sleep state.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: January 28, 2014
    Assignee: Japan Display West Inc.
    Inventors: Tsutomu Harada, Shinya Hashimoto, Naoya Okada, Tadashi Maekawa, Kazunori Yamguchi, Mitsuru Tateuchi, Ryoichi Tsuzaki, Yoshiharu Nakajima, Chiaki Kon
  • Publication number: 20140015742
    Abstract: An inputting/outputting apparatus and method is disclosed wherein the position of an object which is in contact with or in the proximity of the apparatus can be detected with a high degree of accuracy with a simple structure without deteriorating the picture quality while the convenience in use is assured. Each pixel of a display section includes a display cell and a light reception cell. Emission of light of the display cell is controlled so that it blinks by a number of times per unit time corresponding to the number of frames per unit time. Reception of light by the light reception cells is controlled such that the amount of light incoming to all light reception cells is acquired within one light emission period and also within one no-light emission period. The invention can be applied to an image display apparatus.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: SONY CORPORATION
    Inventors: Kazunori Yamaguchi, Tsutomu Harada, Mitsuru Tateuchi, Motoshige Okada
  • Patent number: 8610670
    Abstract: The imaging and display apparatus is provided. The imaging and display apparatus includes the following elements. An imaging-and-display panel has an image display function and an imaging function. A generation unit generates a difference image representing a difference between a display-light-based image and a shadow image, the display-light-based image being obtained by the imaging-and-display panel by imaging an object close to the imaging-and-display panel using display light from the imaging-and-display panel, the shadow image being obtained by the imaging-and-display panel by imaging a shadow of the object. An image processing unit obtains information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: December 17, 2013
    Assignee: Japan Display West Inc.
    Inventors: Tsutomu Harada, Takeru Tamayama, Kazunori Yamguchi, Mitsuru Tateuchi, Kouji Tsujimura, Ryoichi Tsuzaki
  • Patent number: 8587560
    Abstract: A display apparatus is provided and includes display cells each having a display circuit, light receiving cells each having a photosensor configured to receive light from an outside, and display signal lines. The display cells and the light receiving cells are arranged in a row direction perpendicular to the display signal lines and in a column direction parallel with the display signal lines. Also, the light receiving cells in each row are displaced in the row direction between every two adjacent rows in a column direction.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: November 19, 2013
    Assignee: Japan Display West Inc.
    Inventors: Mitsuru Tateuchi, Ryoichi Tsuzaki, Tsutomu Harada, Kazunori Yamaguchi
  • Patent number: 8558854
    Abstract: An image recognition method includes: a first step of acquiring n-th received light data at light receiving elements arranged in a matrix form on a light receiving surface; a second step of acquiring (n+1)-th received light data at the light receiving elements; a third step of calculating differential data resulting from subtraction of the n-th received light data acquired from the (n+1)-th received light data acquired; and a fourth step of carrying out image recognition based on the differential data.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: October 15, 2013
    Assignee: Japan Display West, Inc.
    Inventors: Kazunori Yamaguchi, Michiru Senda, Mitsuru Tateuchi, Tsutomu Harada, Ryoichi Tsuzaki
  • Patent number: 8519912
    Abstract: A liquid-crystal display apparatus is provided.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: August 27, 2013
    Assignee: Sony Corporation
    Inventors: Mitsuru Tateuchi, Tsutomu Harada, Daisuke Takama, Kazunori Yamaguchi, Ryoichi Tsuzaki
  • Patent number: 8487886
    Abstract: An information input device is provided, which may perform highly-convenient processing in response to input of information with an external proximity object. The information input device includes: an input panel having a detection function of detecting an external proximity object, to be used in a state of being placed on a display panel; a position detection section detecting position and area value of the external proximity object based on a detection signal of the external proximity object obtained by the input panel; and an image generation section generating display data to be utilized to display an image including a display object, in such a manner that size of the display object displayed on the display panel at the detected position of the external proximity object is allowed to vary in accordance with the detected area value of the external proximity object.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: July 16, 2013
    Assignee: Japan Display West Inc.
    Inventors: Ryoichi Tsuzaki, Nobuki Furue, Mitsuo Okumura, Shingo Kurokawa, Kazunori Yamaguchi, Tsutomu Harada, Mitsuru Tateuchi
  • Patent number: 8466903
    Abstract: An image generating unit of a display apparatus generates a determination image based on first and second light reception images obtained from light reception cells in a light-emission period and in a non-light-emission period, respectively. An image determining unit determines whether or not an image of an object to be detected is included in the determination image, stores data corresponding to the determination image as initial data into a storage when the object image is not included in the determination image, and stores the data corresponding to the determination image as detection data into the storage when the object image is included in the determination image. A position determining unit determines at least an object position based on an image represented by the detection data in the storage and an image represented by the initial data in the storage.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: June 18, 2013
    Assignee: Japan Display West, Inc.
    Inventors: Mitsuru Tateuchi, Tsutomu Harada, Kazunori Yamaguchi, Ryoichi Tsuzaki
  • Patent number: 8351055
    Abstract: Disclosed herein is a display apparatus including an input/output section for displaying an image as well as detecting a light beam representing an input received from an external source and is capable of handling inputs received from the external source as inputs destined for a plurality of points on a display screen. The apparatus further includes a target generation section configured to generate information on a target located on the display screen to represent a series of inputs received from the external source on the basis of a timewise or spatial relation between input portions located on the display screen as portions receiving inputs from the external source. The apparatus still further includes an event generation section configured to recognize an event representing a change of a state of the target on the basis of the information on the target and generate information on the event.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 8, 2013
    Assignee: Sony Corporation
    Inventors: Ryoichi Tsuzaki, Kazunori Yamaguchi, Tsutomu Harada, Mitsuru Tateuchi, Takeru Tamayama
  • Patent number: 8325298
    Abstract: A display apparatus is provided which can detect light of a predetermined wavelength with a high degree of accuracy from within light incident from a screen by a simple configuration. The display apparatus includes a CF substrate (9) having a plurality of color filters (31) of different colors for passing light for displaying an image on the screen (55a) and an IR filter (33) provided in a region different from an arrangement region of the color filters of the different colors for passing light incident from the screen (55a), and a main sensor (19) provided on the rear side of the IR filter (33) for detecting light incident from the screen (55a) and passing through the IR filter (33). The IR filter (33) has a laminate of filter materials same as filter materials from which at least two or more ones of the color filters of the different colors are formed respectively.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: December 4, 2012
    Assignee: Sony Corporation
    Inventors: Daisuke Takama, Mitsuru Tateuchi, Tsutomu Harada
  • Patent number: 8319749
    Abstract: An image pickup apparatus capable of easily improving the detection accuracy of a touching or proximity object is provided. An offset noise (a reset image R) is obtained by an image pickup process in a state (a reset state) in which an image pickup device is initialized. Moreover, a fingertip extraction process is performed in consideration of the offset noise on the basis of a picked-up image (a shadow image A or a display light-using image B) which is obtained by picking up an image of a proximity object to obtain object information about the proximity object. While an offset noise in the apparatus is easily reduced, object information about the proximity object can be obtained.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: November 27, 2012
    Assignee: Sony Corporation
    Inventors: Tsutomu Harada, Shinya Hashimoto, Tadashi Maekawa, Naoya Okada, Kazunori Yamaguchi, Mitsuru Tateuchi, Ryoichi Tsuzaki, Go Yamanaka