Patents by Inventor Yunshan Gao

Yunshan Gao 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 controlling flash
    Patent number: 9030600
    Abstract: A method and an apparatus for controlling a flash are disclosed. The method includes obtaining a statistical gray value of a preview image. If the statistical gray value of the preview image is less than a preset threshold, a corresponding fill light parameter is searched for in a preset dynamic fill light table according to the statistical gray value of the preview image and the fill light drive current is set according to the fill light parameter. The fill light drive current is configured to drive a flash lamp to fire a pre-flash. A corresponding exposure drive current in the preset exposure parameter table is configured according to the fill light parameter and the exposure drive current is configured to drive the flash lamp to flash.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: May 12, 2015
    Assignee: Huawei Device Co., Ltd.
    Inventor: Yunshan Gao
  • METHOD AND APPARATUS FOR CONTROLLING FLASH
    Publication number: 20140071338
    Abstract: A method and an apparatus for controlling a flash are disclosed. The method includes obtaining a statistical gray value of a preview image. If the statistical gray value of the preview image is less than a preset threshold, a corresponding fill light parameter is searched for in a preset dynamic fill light table according to the statistical gray value of the preview image and the fill light drive current is set according to the fill light parameter. The fill light drive current is configured to drive a flash lamp to fire a pre-flash. A corresponding exposure drive current in the preset exposure parameter table is configured according to the fill light parameter and the exposure drive current is configured to drive the flash lamp to flash.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 13, 2014
    Inventor: Yunshan Gao