Patents Assigned to OMNIVISION
  • Method and apparatus for automatic white balance
    Publication number: 20080143847
    Abstract: A method of automatic white balance for an image capture system is disclosed. The automatic white balance mechanism ascertains the illuminant source of an image by analyzing the number of white pixels within a predefined white area in a color space diagram. The automatic white balance mechanism also determines gain adjustments based on the evaluating the average RGB values to achieve white balance.
    Type: Application
    Filed: February 26, 2008
    Publication date: June 19, 2008
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventor: Ge Shi
  • Method and apparatus for automatic white balance
    Publication number: 20080143849
    Abstract: A method of automatic white balance for an image capture system is disclosed. The automatic white balance mechanism ascertains the illuminant source of an image by analyzing the number of white pixels within a predefined white area in a color space diagram. The automatic white balance mechanism also determines gain adjustments based on the evaluating the average RGB values to achieve white balance.
    Type: Application
    Filed: February 26, 2008
    Publication date: June 19, 2008
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventor: Ge Shi
  • Active pixel having reduced dark current in a CMOS image sensor
    Publication number: 20030085400
    Abstract: The active pixel includes a photodiode, a transfer gate, and a reset transistor. The photodiode is substantially covered with an overlying structure, thus protecting the entire surface of the photodiode from damage. This substantially eliminates potential leakage current sources, which result in dark current. In one embodiment, the photodiode is covered by a FOX region in combination with the transfer gate.
    Type: Application
    Filed: August 14, 2002
    Publication date: May 8, 2003
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Xinping He, Chih-Huei Wu, Tiemin Zhao