Patents by Inventor Ching T. Lai

Ching T. Lai 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).

  • Image retouching
    Patent number: 4794382
    Abstract: A method and apparatus for electronically retouching an image are described. The apparatus comprises a source (1) of color component image signals representing the color component values for the picture elements of the image to enable the image to be displayed on a monitor screen (8). A source (9) of color data is provided representing the color component values of a first range of colors, adjacent colors differing from each other by more than a predetermined amount. A control device (2) such as a minicomputer causes the monitor screen (8) to display the first range of colors.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: December 27, 1988
    Assignee: Crosfield Electronics Limited
    Inventors: Ching T. Lai, David J. MacKenzie