Patents by Inventor Tam Q. Duong

Tam Q. Duong 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).

  • Patent number: 7184172
    Abstract: A method for controlling printer color is provided. The method includes receiving cartridge color density data, such as from analysis of a test patch printed by the cartridge, and reference cartridge data, such as from analysis of a test patch printed and measured in accordance with a color standard. The color density data of the cartridge test patch is then mapped to the color density data of the reference cartridge test patch to generate mapped color density data, such as a look-up table that provides a dot activation for the cartridge that generates the same color density for a known dot activation for the reference cartridge. The mapped color density data is then used to control color density for printing a set of image data.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: February 27, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chia-Lin Chu, Gokalp Bayramoglu, Henry M. D'Souza, Tam Q. Duong
  • Patent number: 7184173
    Abstract: A system for characterizing color is provided. The system includes a color patch identification system that receives image data, such as image data of a color wedge, and generates color patch data, such as for two or more patches that make up the color wedge. A color patch characterization system receives the color patch data and generates color density data, such as by calculating the average color density of each color patch.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: February 27, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chia-Lin Chu, Gokalp Bayramoglu, Henry M. D'Souza, Tam Q. Duong
  • Publication number: 20040001209
    Abstract: A method for controlling printer color is provided. The method includes receiving cartridge color density data, such as from analysis of a test patch printed by the cartridge, and reference cartridge data, such as from analysis of a test patch printed and measured in accordance with a color standard. The color density data of the cartridge test patch is then mapped to the color density data of the reference cartridge test patch to generate mapped color density data, such as a look-up table that provides a dot activation for the cartridge that generates the same color density for a known dot activation for the reference cartridge. The mapped color density data is then used to control color density for printing a set of image data.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Applicant: Compaq Information Technologies Group, L.P.
    Inventors: Chia-Lin Chu, Gokalp Bayramoglu, Henry M. D'Souza, Tam Q. Duong
  • Publication number: 20040001210
    Abstract: A system for characterizing color is provided. The system includes a color patch identification system that receives image data, such as image data of a color wedge, and generates color patch data, such as for two or more patches that make up the color wedge. A color patch characterization system receives the color patch data and generates color density data, such as by calculating the average color density of each color patch.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Applicant: Compaq Information Technologies Group, L.P., a Delaware corporation
    Inventors: Chia-Lin Chu, Gokalp Bayramoglu, Henry M. D'Souza, Tam Q. Duong
  • Publication number: 20020149785
    Abstract: A technique of automatic printer color correction includes accessing characterization data of the color ink cartridge and rendering consistent color for the color ink jet printer based on the characterization data. The characterization data can be stored on a website and accessed over the Internet by providing an identifier of the color ink cartridge. The identifier can, for example, be the serial number of the color ink cartridge. The characterization data—density data, for example—can be added to a printer profile for the color ink jet printer.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 17, 2002
    Inventors: Chia-Lin Chu, Gokalp Bayramoglu, Henry M. D'Souza, Tam Q. Duong