DR. TAM DUONG, M.D.
Medical Practice at Austin St, Houston, TX

2004000, Jan 1, 2004

Jun 27, 2002

10/184468

Chia-Lin Chu - Tomball TX, US
Gokalp Bayramoglu - Houston TX, US
Henry D'Souza - Cypress TX, US
Tam Duong - Houston TX, US

Compaq Information Technologies Group, L.P. - Houston TX

H04N001/60, H04N001/50

358/001900, 358/504000, 358/521000, 358/523000

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.

2004000, Jan 1, 2004

Jun 27, 2002

10/185807

Chia-Lin Chu - Tomball TX, US
Gokalp Bayramoglu - Houston TX, US
Henry D'Souza - Cypress TX, US
Tam Duong - Houston TX, US

Compaq Information Technologies Group, L.P., a Delaware corporation - Houston TX

H04N001/50, H04N001/60

358/001900, 358/504000, 358/521000, 358/523000

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.

2002014, Oct 17, 2002

Mar 30, 2001

09/822094

Chia-Lin Chu - Cypress TX, US
Gokalp Bayramoglu - Houston TX, US
Henry D'Souza - Cypress TX, US
Tam Duong - Houston TX, US

B41B001/00, B41J001/00, G06K001/00

358/001900

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.