Facsimile and static presentation processing – Static presentation processing – Detail of image placement or content
Reexamination Certificate
1998-05-29
2001-03-27
Coles, Edward L. (Department: 2722)
Facsimile and static presentation processing
Static presentation processing
Detail of image placement or content
C358S001160, C358S001170, C382S289000, C382S293000, C382S296000, C382S297000
Reexamination Certificate
active
06208429
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to digital image data printing, and more particularly to a method and system for band printing rotated digital image data.
BACKGROUND OF THE INVENTION
Digital image data production has become increasingly utilized with the advancement of digital image data capture devices, the prevalence of image intensive home pages and websites on the World Wide Web, and improvements in digital image output devices, including band printers. Image production via band printing sometimes encounters difficulties when print orientations differ from captured orientations, e.g., landscape images printed in portrait layouts.
FIG. 1
illustrates an example of a single page portrait layout of four images, where three of the images
10
,
12
, and
14
are landscape images, and one image
16
is a portrait image
16
. A band printer, for example, an inkjet printer, normally prints in a predetermined direction, e.g., left to right, across a page from top to bottom. Thus, when band printing images
10
,
12
,
14
, and
16
, images
10
and
12
would be printed first as the page is printed from top to bottom. However, in order to print these images, the stored image data for these images requires rotation, since the order of the data in storage for the landscape image does not match the order necessary for printing in a portrait orientation.
Rotating received image data to form a printing band is often a slow and repetitive process. Typical band printing of rotated image data includes decompressing the entire image to then select the portion of the decompressed image data that is appropriate for the current printing band. While all systems must have enough memory to hold a single print band of image data, most systems do not include enough memory to store decompressed and rotated image data from an entire image during band printing. Thus, for each printing band, the entire image must be redecompressed in order to obtain the appropriate data for the current printing band.
One method to achieve more efficient printing of rotated images is to provide a print buffer large enough to hold an entire image's worth of decompressed and rotated image data. Unfortunately, in order to provide enough memory to accommodate any potential image size is impractical and cost-prohibitive for most systems.
What is needed is a method and system of increasing print performance of rotated images with efficient use of memory. The present invention addresses such a need.
SUMMARY OF THE INVENTION
The present invention provides method and system aspects for increasing print performance for rotated digital images. A method aspect, and system for providing same, includes analyzing a selected image print layout to determine at least a number and size of rotated images in the selected image print layout. Further included is allocating available rotate buffer space to the rotated images based on at least the number and size of the rotated images, and executing band printing of the selected print layout.
With the present invention, an effective and efficient utilization of memory during band printing of rotated images is achieved. The utilization maintains preferred functionality and performance across image sizes and readily scales with increased memory provisions. These and other advantages of the aspects of the present invention will be more fully understood in conjunction with the following detailed description and accompanying drawings.
REFERENCES:
patent: 4271476 (1981-06-01), Lotspiech
patent: 4703515 (1987-10-01), Baroody, Jr.
patent: 5477264 (1995-12-01), Sarbadhikari et al.
patent: 5633678 (1997-05-01), Parulski et al.
patent: 5825988 (1998-10-01), Collard et al.
Coles Edward L.
Flashpoint Technology, Inc.
Sawyer Law Group LLP
Wallerson Mark
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