Patents by Inventor Chung Wai Ng

Chung Wai Ng 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 device for white level calibration
    Patent number: 7889251
    Abstract: Calibrating a white level in an image scanning device. A target white level is accessed. A high white level is determined for pixel data output by an amplifier. A gain adjustment to the amplifier is determined to correct a portion of an error between the target white level and the high white level. The gain adjustment is applied to the amplifier.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: February 15, 2011
    Assignee: National Semiconductor Corporation
    Inventors: Chung Wai Ng, David Boisvert, Kunhong Qu, Mehmet Aslan