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    • 2. 发明授权
    • Interface for providing rasterized data to an imaging device
    • 用于向成像设备提供光栅化数据的接口
    • US5615314A
    • 1997-03-25
    • US298410
    • 1994-08-30
    • Loren SchoenzeitRichard A. KeeneyWilliam H. GlassScott T. Mazar
    • Loren SchoenzeitRichard A. KeeneyWilliam H. GlassScott T. Mazar
    • G06F3/12G06K15/00G06K15/16G06K1/00
    • G06K15/00G06F3/1293G06K15/16G06K2215/0011G06K2215/0094
    • An interface provides rasterized data to an imaging device such as a color copier or laser printer. Rasterized image data received from a raster image processor is compressed and stored in an output queue until the imaging device is ready to receive an image represented by the data. A data output path between the output queue and imaging device communicates the rasterized image data to the imaging device. The compressed rasterized image data is decompressed within the data output path as the data is being communicated to the imaging device. Throughput of the imaging device is maximized by actuating the device to operate in a multiple copy mode while rasterized image data for different image pages is successively communicated to the imaging device. An abort command prevents the imaging device from processing extraneous substrates when running in a multiple copy mode. Image processing is provided to selectively dilate objects contained in images represented by the rasterized image data, thereby compensating for potential multi-pass misregistration errors in the imaging device.
    • 界面向成像设备(如彩色复印机或激光打印机)提供光栅化数据。 从光栅图像处理器接收的光栅化图像数据被压缩并存储在输出队列中,直到成像装置准备好接收由数据表示的图像。 输出队列和成像设备之间的数据输出路径将光栅化图像数据传送到成像设备。 随着数据被传送到成像设备,压缩的光栅化图像数据在数据输出路径内被解压缩。 通过致动装置以多重复制模式操作,成像装置的吞吐量最大化,而不同图像页面的光栅化图像数据被连续地传送到成像装置。 中止命令可防止成像设备在多重复制模式下运行时处理外来衬底。 提供图像处理以选择性地扩展由光栅化图像数据表示的图像中包含的对象,由此补偿成像装置中的潜在的多遍重合错误。
    • 4. 发明授权
    • Iterative compression of digital images
    • 数字图像的迭代压缩
    • US5625712A
    • 1997-04-29
    • US355594
    • 1994-12-14
    • Loren SchoenzeitRichard A. KeeneyPhilip A. Lodwick
    • Loren SchoenzeitRichard A. KeeneyPhilip A. Lodwick
    • H04N1/64G06K9/36
    • H04N1/644
    • A method and apparatus are provided for compressing image data to enable the storage thereof in a limited amount of memory available in an imaging system. The image data is rasterized into a plurality of scan lines representing at least a portion of an image. Each scan line comprises a sequence of pixels. The scan lines are compressed in a first coding step. A determination is made as to whether the amount of data contained in the compressed plurality of scan lines exceeds the available storage capacity of the memory. If so, the scan lines are further compressed in a second coding step to reduce the amount of data therein. The second coding step can be successively repeated using more tolerant coding thresholds until the amount of data remaining no longer exceeds the available storage capacity of the memory.
    • 提供了一种用于压缩图像数据以使其能够在成像系统中可用的有限量的存储器中的存储的方法和装置。 图像数据被光栅化成表示图像的至少一部分的多条扫描线。 每个扫描线包括一系列像素。 扫描线在第一编码步骤中被压缩。 确定压缩的多条扫描线中包含的数据量是否超过存储器的可用存储容量。 如果是这样,则在第二编码步骤中进一步压缩扫描线以减少其中的数据量。 可以使用更宽的编码阈值连续地重复第二编码步骤,直到剩余的数据量不再超过存储器的可用存储容量。