US 6,982,814 B1 | ||
Image printing devices with AM/FM half-toning with self-determination of dot size and method of implementing same | ||
Allen L. Frazier, Eagle, Id. (US); and Jan P. Allebach, W. Lafayette, Ind. (US) | ||
Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
Filed on Aug. 23, 2000, as Appl. No. 9/648,531. | ||
Int. Cl. H04N 1/40 (2006.01); B41J 2/47 (2006.01) |
U.S. Cl. 358—3.12 | 31 Claims |
1. An image printing device comprising:
an input for receiving an image data signal in said image printing device; and
a processor in said image printing device for receiving and processing said image data signal;
wherein
at a certain stage of the processing said image data signal contains one bit per pixel data specifying location data for each
dot of which an image described by said image data signal is constituted but not a size for each said dot, and
said processor estimates a dot density in a defined area around each said dot, and determines a size for each said dot based
on the estimated dot density for that said dot.
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