Patents by Inventor Lee-Ren Kuo

Lee-Ren Kuo 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 for focusing by using a pre-flash
    Patent number: 7493035
    Abstract: A method for focusing by using a pre-flash is provided. The method includes the following steps. First, the image sensor captures a first image of the object, wherein the average brightness of the first image is calculated to be Y0. Next, the image sensor captures a second image of the object with the aid of a first pre-flash having a first energy, wherein the average brightness of the second image is calculated to be Y1. Afterwards, the image sensor captures a third image of the object with the aid of a second pre-flash having a second energy, wherein the average brightness of the third image is calculated to be Y2. Then, the distance D to the object is calculated according to the brightness Y0 and the difference ?Y between Y1 and Y2. Finally, the image sensor adjusts the focus according to the distance D.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: February 17, 2009
    Assignee: Compal Electronics, Inc.
    Inventors: Lee-Ren Kuo, Jian-Yu Lin, Feng-Chi Chang
  • METHOD FOR FOCUSING BY USING A PRE-FLASH
    Publication number: 20060216012
    Abstract: A method for focusing by using a pre-flash is provided. The method includes the following steps. First, the image sensor captures a first image of the object, wherein the average brightness of the first image is calculated to be Y0. Next, the image sensor captures a second image of the object with the aid of a first pre-flash having a first energy, wherein the average brightness of the second image is calculated to be Y1. Afterwards, the image sensor captures a third image of the object with the aid of a second pre-flash having a second energy, wherein the average brightness of the third image is calculated to be Y2. Then, the distance D to the object is calculated according to the brightness Y0 and the difference ?Y between Y1 and Y2. Finally, the image sensor adjusts the focus according to the distance D.
    Type: Application
    Filed: October 28, 2005
    Publication date: September 28, 2006
    Inventors: Lee-Ren Kuo, Jian-Yu Lin, Feng-Chi Chang