METHODS AND APPARATUS FOR MEDIA SELECTION IN CLUSTER PRINTING SYSTEMS
    2.
    发明公开
    METHODS AND APPARATUS FOR MEDIA SELECTION IN CLUSTER PRINTING SYSTEMS 有权
    方法和设备机群打印机系统的媒体选择

    公开(公告)号:EP1639414A1

    公开(公告)日:2006-03-29

    申请号:EP04754786.4

    申请日:2004-06-09

    IPC分类号: G03G15/00

    摘要: Methods and apparatus are provided for specifying media in cluster printing systems that include printers that use device-specific media selection techniques, such as paper catalogs, media tray pulldown menus and media attribute pulldown menus. A universal media selector is provided that includes a universal paper catalog, an editor, a paper catalog translator and a tray associator. The universal paper catalog includes one or more entries that associate a media label with corresponding media attributes. The editor may be used to edit paper catalog entries. The paper catalog translator may be used to translate attribute labels and associated values in the universal paper catalog to corresponding attribute names and associated values used in device-specific paper catalogs of printers included in the cluster printing system. The tray associator associates paper catalog entries to device-specific media trays of printers included in the cluster printing system.

    LOW MEMORY PRINTER CONTROLLER
    3.
    发明公开
    LOW MEMORY PRINTER CONTROLLER 审中-公开
    与小店打印机控制器

    公开(公告)号:EP1145188A1

    公开(公告)日:2001-10-17

    申请号:EP99970489.3

    申请日:1999-10-06

    IPC分类号: G06K15/00

    CPC分类号: G06K15/00 G06K2215/0014

    摘要: A mechanism is provided that allows color printers to render color or black and white files in a reduced memory configuration, and in a time efficient fashion. An incoming data file which represente a page that is to be printed is provided to an interpreter. The data file includes an object that is to be rendered by the interpreter. The interpreter requests an uncompressed representation of a patch, where the patch intersects with the object that is to be rendered. A patch cache holds a collection of patches of different locations and different types. If the requested patch is not in the patch cache, room is made in the patch cache by compressing the least recently used patch data. The requested patch is then decompressed in the patch cache by a compression mechanism. The compression mechanism holds a collection of compressed patch data that tiles the entire page. Each patch is compressed independently from one another. Thus, the logical page representation is broken down into patches, where the breakdown is known to the interpreter and the compression mechanism. A stitcher uses a stitching process to turn the patch page representation into a compressed line, band, or full page representation. The representation is stored in a frame buffer. Dedicated hardware and/or software decompresses the frame buffer on-the-fly and places colored dots on the printed page.