Patents by Inventor Shankar J. Iyer

Shankar J. Iyer 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 efficiently interpolating an image using an expansion factor derived from two different numbers of gray levels
    Patent number: 6213653
    Abstract: A method and apparatus for determining an efficient expansion factor for an interpolation process to produce an interpolated image that has a greater spatial resolution and greater number of gray levels than an original image. An original image having a resolution is received by a computer system and an expansion factor for the image is determined. The expansion factor is derived from a number of gray levels displayable on a target display device and a number of gray levels that can be represented in an interpolated image produced from the original image. This expansion factor is close to the largest expansion factor that will allow the target display device to display all of the interpolated gray levels, and is used to provide an interpolated image having high visual quality and minimal memory requirements. The original image is interpolated using the expansion factor and is preferably supplied to the target display device, such as a display screen or a printing device.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: April 10, 2001
    Assignee: Adobe Systems Incorporated
    Inventors: Lars U. Borg, Shankar J. Iyer