Curtain Shutter Patents (Class 396/194)
  • Patent number: 8743273
    Abstract: A row scanning unit activates a synchronous curtain shutter mode in which pixel reset scan is performed and exposure of the imaging area is started by the pixel reset scan and is ended by light shielding by a mechanical curtain shutter, the pixel reset scan meaning that scan on a row-by-row basis is performed on pixel reset in which the photodiodes are reset by turning on the transfer transistors and a corresponding reset transistor, wherein in the mechanical curtain synchronous shutter mode, the pixel reset scan according to the traveling characteristics of the mechanical curtain shutter is performed, and the pixel reset scan includes performing a pixel reset operation simultaneously on the unit cells of different rows.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: June 3, 2014
    Assignee: Panasonic Corporation
    Inventor: Masanori Kyogoku
  • Patent number: 8723983
    Abstract: An image capture device for capturing an image of an object includes a plurality of photoelectric conversion elements configured to output a signal corresponding to the image based on an amount of exposure between a first shutter operation for starting exposure and a second shutter operation for ending exposure, a controller configured to control the first shutter operation and the second shutter operation, and an image generation section configured to correct the signal, and to generate an output image corresponding to the signal after being corrected. The image generation section is configured to correct the signal based on variance in exposure duration among the plurality of photoelectric conversion elements between the first shutter operation and the second shutter operation.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Ryuichi Shiohara
  • Patent number: 8488033
    Abstract: Photographing having a wide dynamic range is performed by adjusting a discharging time for discharging charges accumulated in an image pickup device. A photographing apparatus comprises an image pickup device having a plurality of pixels arranged in a matrix form and photographs a subject by exposing the image pickup device to light, and also includes: a detector that detects a photographing state of the subject; an operation controller that controls an operation of a curtain body traveling to block light to the image pickup device; and a scan controller that controls an exposure start scanning of the image pickup device by discharging charges accumulated in the image pickup device before the traveling of the curtain body, wherein the scan controller adjusts a discharging time for discharging the charges accumulated in the image pickup device according to the photographing state of the subject.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: July 16, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yasuo Takane
  • Patent number: 8432481
    Abstract: An image sensing apparatus has an image sensing element which accumulates received light as a charge, a mechanical shutter which travels to shield the image sensing element, and a scan unit which makes a scan for starting charge accumulation. The image sensing apparatus executes the scan for starting charge accumulation prior to traveling of the mechanical shutter and controls the scan for starting charge accumulation and traveling of the shutter to serve as a front curtain and a rear curtain of a shutter. Note that a scan pattern setting unit (113b) sets the scan pattern of the charge accumulation start scan based on information associated with a mounted photographing lens.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: April 30, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Namai, Hiroshi Kikuchi
  • Patent number: 8107003
    Abstract: An image sensing apparatus having an electronic shutter for controlling the charge accumulation time of an image sensing element and a mechanical shutter for releasing/shielding an optical path to the image sensing element includes an electronic shutter mode of controlling the image sensing time mainly by the electronic shutter and a mechanical shutter mode of controlling the image sensing time mainly by the mechanical shutter. In the electronic shutter mode, the operations of the electronic and mechanical shutters are controlled to overlap each other, and a charge reading period of the image sensing element and part of a release operation period of the mechanical shutter are controlled to overlap each other.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: January 31, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshio Matsumoto
  • Patent number: 7440022
    Abstract: An image sensing apparatus having an electronic shutter for controlling the charge accumulation time of an image sensing element and a mechanical shutter for releasing/shielding an optical path to the image sensing element includes an electronic shutter mode of controlling the image sensing time mainly by the electronic shutter and a mechanical shutter mode of controlling the image sensing time mainly by the mechanical shutter. In the electronic shutter mode, the operations of the electronic and mechanical shutters are controlled to overlap each other, and a charge reading period of the image sensing element and part of a release operation period of the mechanical shutter are controlled to overlap each other.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: October 21, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshio Matsumoto