Patents by Inventor Takafumi Usui

Takafumi Usui 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).

  • Method and apparatus for increasing dynamic range of image by using electronic shutter
    Patent number: 8587692
    Abstract: A method for increasing a dynamic range of an image by using an electronic shutter of a camera, the method including initiating exposure of an image sensor by moving a mechanical front curtain included in the camera; moving an electronic front curtain with respect to at least one pixel of the image sensor according to a control pulse signal of the electronic shutter; and blocking the exposure of the image sensor by moving a mechanical rear curtain included in the camera.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: November 19, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Tae-ho Lee, Takafumi Usui
  • DIGITAL PHOTOGRAPHING APPARATUS, AUTO-FOCUSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM FOR EXECUTING THE AUTO-FOCUSING METHOD
    Publication number: 20120307130
    Abstract: An apparatus, computer readable medium, and method for auto-focusing, the method including reading out a live-view signal from first group pixels; reading out an auto-focusing detection signal from second group pixels; and auto-focusing using the live-view signal and the auto-focusing detection signal, wherein the first group pixels and the second group pixels do not substantially overlap
    Type: Application
    Filed: May 25, 2012
    Publication date: December 6, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Takafumi Usui
  • IMAGE PICKUP DEVICE, DIGITAL PHOTOGRAPHING APPARATUS USING THE IMAGE PICKUP DEVICE, AUTO-FOCUSING METHOD, AND COMPUTER-READABLE MEDIUM FOR PERFORMING THE AUTO-FOCUSING METHOD
    Publication number: 20120293706
    Abstract: An image pickup device is provided including a plurality of pixels arranged over an entire region of the image pickup device, each pixel including: a plurality of light-receiving sub-pixels that generate an image pickup signal from incident light; and a phase-difference detection sub-pixel having a confined light-receiving region. The plurality of pixels includes first group pixels and second group pixels that are each classified according to an arrangement of the confined light-receiving region of the phase-difference detection sub-pixel thereof, and the confined light-receiving region of the phase-difference detection sub-pixel of the first group pixels and the confined light-receiving region of the phase-difference detection sub-pixel in the second group pixels are arranged biased to opposite directions.
    Type: Application
    Filed: November 3, 2011
    Publication date: November 22, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Takafumi Usui
  • METHOD AND APPARATUS FOR INCREASING DYNAMIC RANGE OF IMAGE BY USING ELECTRONIC SHUTTER
    Publication number: 20110050946
    Abstract: A method for increasing a dynamic range of an image by using an electronic shutter of a camera, the method including initiating exposure of an image sensor by moving a mechanical front curtain included in the camera; moving an electronic front curtain with respect to at least one pixel of the image sensor according to a control pulse signal of the electronic shutter; and blocking the exposure of the image sensor by moving a mechanical rear curtain included in the camera.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 3, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Tae-ho LEE, Takafumi Usui