Abstract: A page may be divided into several blocks which do not span the entire width of a page. A bit map representing the page content may be generated by rendering the display lists representing the blocks. According to another aspect, a display list may be generated associated with a big portion of a page. The big portion may be divided into smaller portions at/before rendering, and bit maps may be generated for the smaller portions.

Abstract: Patterns are processed minimizing resources such as memory and/or processing power. According to one aspect, when a pattern object is received with the same identifier as that of an earlier received pattern, a count is maintained reflecting a number of times the earlier pattern is to be used in rendering. When the earlier pattern is used as many times as the count in the rendering operations, the earlier pattern is deleted from the memory. According to another aspect, when two patterns are defined based on the same pattern data, the pattern is stored in a common storage area, and a pointer is maintained to the storage area from both the patterns. According to another aspect, even if a pattern is to be used only in the expanded form while rendering, the pattern is stored in non-expanded form until the time of rendering to minimize memory consumption.

Abstract: Image content may be generated in high resolution by performing raster operations, and half-toning is then performed on the image content. Due to such a sequence, a substantially consistent image may be generated on different printers irrespective of the degree of half-toning. Another aspect of the present invention enables the computation requirements to be reduced by storing in a temporary buffer the image data (paint, destination, source) used multiple times.

Abstract: Patterns are processed minimizing resources such as memory and/or processing power. According to one aspect, when a pattern object is received with the same identifier as that of an earlier received pattern, a count is maintained reflecting a number of times the earlier pattern is to be used in rendering. When the earlier pattern is used as many times as the count in the rendering operations, the earlier pattern is deleted from the memory. According to another aspect, when two patterns are defined based on the same pattern data, the pattern is stored in a common storage area, and a pointer is maintained to the storage area from both the patterns. According to another aspect, even if a pattern is to be used only in the expanded form while rendering, the pattern is stored in non-expanded form until the time of rendering to minimize memory consumption.

Abstract: A page may be divided into several blocks which do not span the entire width of a page. A bit map representing the page content may be generated by rendering the display lists representing the blocks. According to another aspect, a display list may be generated associated with a big portion of a page. The big portion may be divided into smaller portions at/before rendering, and bit maps may be generated for the smaller portions.

Abstract: Image content may be generated in high resolution by performing raster operations, and half-toning is then performed on the image content. Due to such a sequence, a substantially consistent image may be generated on different printers irrespective of the degree of half-toning. Another aspect of the present invention enables the computation requirements to be reduced by storing in a temporary buffer the image data (paint, destination, source) used multiple times.

Abstract: A printer controller which renders the bands in a plane of a page to measure the resources required to render each band of the plane. The measured parameters are used to estimate the resources required to render bands in the other planes. As a strong correlation may exist in the complexity of the same relative band in different planes, the estimation may also be accurate. As a result, complex bands may be accurately pre-scheduled for rendering, and a printer may thus ensure that bits maps of even complex bands are timely available for printing.