Inkjet printer having image decoding controller
First Claim
1. An inkjet printer comprising:
- a printhead; and
a controller for controlling the print head, the controller comprising;
an interface for receiving compressed page data;
a first decoder for decoding continuous tone image planes in the received compressed page data;
a second decoder for decoding bi-level image planes in the received compressed page data;
a half-toner for dithering separate color planes of the decoded continuous tone image planes which are output by the first decoder to separate buffers of the half-toner and a compositor for compositing the decoded bi-level image planes output by the second decoder with the dithered image planes; and
a print head interface for outputting the composite to the print head.
3 Assignments
0 Petitions
Accused Products
Abstract
An inkjet printer is provided having a printhead and a controller for controlling the print head. The controller has an interface for receiving compressed page data, a first decoder for decoding continuous tone image planes in the received compressed page data, a second decoder for decoding bi-level image planes in the received compressed page data, a half-toner for dithering separate color planes of the decoded continuous tone image planes which are output by the first decoder to separate buffers of the half-toner and a compositor for compositing the decoded bi-level image planes output by the second decoder with the dithered image planes, and a print head interface for outputting the composite to the print head.
-
Citations
6 Claims
-
1. An inkjet printer comprising:
-
a printhead; and a controller for controlling the print head, the controller comprising; an interface for receiving compressed page data; a first decoder for decoding continuous tone image planes in the received compressed page data; a second decoder for decoding bi-level image planes in the received compressed page data; a half-toner for dithering separate color planes of the decoded continuous tone image planes which are output by the first decoder to separate buffers of the half-toner and a compositor for compositing the decoded bi-level image planes output by the second decoder with the dithered image planes; and a print head interface for outputting the composite to the print head. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification