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:
Aug. 21, 2001
Filed:
Apr. 17, 1998
Applicant:
Inventors:
Robert Alan Ulichney, Stow, MA (US);
Robert Stephen McNamara, Portola Valley, CA (US);
Assignee:
Compaq Computer Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/405 ;
U.S. Cl.
CPC ...
H04N 1/405 ;
Abstract
An apparatus for dithering a signal such as a pixels of an image having multiple address dimensions. A predetermined number of least significant bits of a first address of the pixel are used to index a one-dimensional dither array. Indexing the array produces a first dither value. A predetermined least number of significant bits of a second address of the pixel are combined with the first dither value to index a second one-dimensional dither array. The indexing of the second array produces a final dither value that can be used to dither the pixels.