Methods and apparatus for dynamically soft proofing halftone...

Facsimile and static presentation processing – Static presentation processing – Attribute control

Reexamination Certificate

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Details

C358S536000, C358S533000, C358S450000, C358S538000, C358S534000, C347S043000, C345S589000, C345S590000

Reexamination Certificate

active

08031363

ABSTRACT:
Methods and apparatus are provided for dynamically halftoning image data, substantially in real-time. Halftone threshold values are calculated and stored in memory, and halftone output values are calculated for the portions of the image data that will be displayed on a display device. Halftone screen parameters may be modified, and new halftone screen threshold values may be calculated for any affected halftone screens. For unaffected halftone screens, the previously stored threshold values may be retrieved from memory. In addition, the portion of the image to be displayed may be modified, and the halftone output values of the new portion may be calculated and then displayed.

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Deke McClelland: “Photoshop 6 for Windows Bible,” 2001, IDG Books Worldwide, Inc., Foster City, CA 94404 XP002289633.

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