The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2005
Filed:
Oct. 24, 2000
Danielle Kathyrn Dittrich, Longmont, CO (US);
Joan Laverne Mitchell, Longmont, CO (US);
Fritz H. Obermeyer, Wellington, CO (US);
Gerhard Robert Thompson, Wappingers Falls, NY (US);
Chai Wah Wu, Poughkeepsie, NY (US);
Danielle Kathyrn Dittrich, Longmont, CO (US);
Joan LaVerne Mitchell, Longmont, CO (US);
Fritz H. Obermeyer, Wellington, CO (US);
Gerhard Robert Thompson, Wappingers Falls, NY (US);
Chai Wah Wu, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Provided is a method, system, program, and data structures for halftoning an input image comprised of at least two input color components. Each input color component provides input intensity values for the color component at pixel locations in the image. At least two halftoning screens are accessed. There is one screen for each color component and halftone output generated by at least one of the screens has a lines per inch (LPI) that is at least approximately twenty percent different than the LPI of halftone output generated by one other screen. The input image is separated into the separate color components. The accessed screen for each color component is applied to the input intensity values for the color component to produce output intensity values for the color component. The combined halftone outputs for all the color components form the output pixels.