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:
Jun. 06, 2006
Filed:
Jan. 04, 2005
Beat Stamm, Redmond, WA (US);
Michael J. Duggan, Kirkland, WA (US);
Gregory Hitchcock, Woodinville, WA (US);
Paul M. Linnerud, Bellevue, WA (US);
Beat Stamm, Redmond, WA (US);
Michael J. Duggan, Kirkland, WA (US);
Gregory Hitchcock, Woodinville, WA (US);
Paul M. Linnerud, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
The present invention relates to dropout control in which one or more samples are added to adjacent samples that fall within an image outline. The samples are used in sub-pixel rendering to compensate for unnaturally thin or faint object stems. Horizontal dropout control operations are provided to add samples to sets of horizontally adjacent samples such that each set of samples comprises a minimum number of samples. Vertical dropout control operations are provided to position samples such that the weighted anti-aliasing filtering will take sufficient account of the samples. In one embodiment, an associative table is utilized to calculate alternative patterns of samples. In another embodiment, the baseline of an object is used in the dropout control operations to reduce artifacts that can be created by the addition of samples in the vertical direction.