Patents by Inventor Anoop Bhattacharjya

Anoop Bhattacharjya 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).

  • Color stochastic screening with optimal color dot placement
    Patent number: 6031626
    Abstract: An improved display of a color image is achieved by an optimum placement of color dots using an efficient stochastic screening process in which display elements are formed according to a priority ranking of color and according to a spatial-priority matrix. Various combinations of basic colors are ranked in priority according to visibility such that elements in a stochastic screen are first formed for the most visible colors. The number of elements in the screen that are used to represent more than one basic color is minimized. In preferred embodiments, a spatial-priority matrix is used to control the placement of colors in a stochastic screen such that an optimally uniform distribution of colors is achieved. A process for generating a spatial priority matrix for display devices that do not have a one-to-one display aspect ratio is described.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: February 29, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Joseph Shu, Hakan Ancin, Anoop Bhattacharjya, Chia-Hsin Li
  • Color stochastic screening with optimal color dot placement for display devices having arbitrary aspect ratios
    Patent number: 5963715
    Abstract: An improved display of a color image is achieved by an optimum placement of color dots using an efficient stochastic screening process in which display elements are formed according to a priority ranking of color and according to a spatial-priority matrix. Various combinations of basic colors are ranked in priority according to visibility such that elements in a stochastic screen are first formed for the most visible colors. The number of elements in the screen that are used to represent more than one basic color is minimized. In preferred embodiments, a spatial-priority matrix is used to control the placement of colors in a stochastic screen such that an optimally uniform distribution of colors is achieved. A process for generating a spatial priority matrix for display devices that do not have a one-to-one display aspect ratio is described.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: October 5, 1999
    Assignee: Seiko Epson Corporation
    Inventors: Joseph Shu, Hakan Ancin, Anoop Bhattacharjya, Chia-Hsin Li