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1. 发明申请

WO1992003798A1 OFFSET-BASED DMA MECHANISM 审中-公开
标题翻译：基于偏移的DMA机制
公开(公告)号：WO1992003798A1
公开(公告)日：1992-03-05
申请号：PCT/US1991005911
申请日：1991-08-20
申请人： EASTMAN KODAK COMPANY
发明人： EASTMAN KODAK COMPANY , GOTTA, James, Morgan, III , DELLERT, David, William
IPC分类号： G06F15/64
CPC分类号： G06T1/60
摘要： A DMA mechanism for accessing a selected portion of an information storage matrix subdivides the matrix into a plurality of tiles, each containing a sub-matrix of addressable storage locations. Address codes for accessing a block of tiles that correspond to the selected portion of the matrix are generated by storing the starting address of a first row of a first prescribed tile of the block and successively addressing groups of storage locations within each of the successive rows of that tile, by combining word and line address modifiers with the starting line address. Using additional codes which delineate the size of the block, this process is repeated, as necessary, on a tile-by-tile basis, for each tile in the block.
摘要翻译：用于访问信息存储矩阵的选定部分的DMA机制将矩阵细分为多个瓦片，每个瓦片包含可寻址存储位置的子矩阵。通过存储块的第一规定块的第一行的起始地址和连续地寻址每个连续行的每个存储位置组来生成用于访问对应于矩阵的所选部分的块的块的地址代码通过将字和行地址修饰符与起始行地址组合。使用描绘块大小的附加代码，根据需要，对于块中的每个块，按照逐块的方式重复该过程。

2. 发明申请

WO1991010314A1 HIGH SPEED COMPRESSION OF IMAGERY DATA 审中-公开
标题翻译：高速压缩图像数据
公开(公告)号：WO1991010314A1
公开(公告)日：1991-07-11
申请号：PCT/US1990007306
申请日：1990-12-17
申请人： EASTMAN KODAK COMPANY
发明人： EASTMAN KODAK COMPANY , DELLERT, David, William , WEINER, Frank
IPC分类号： H04N01/413
CPC分类号： H04N1/413 , H04N19/30 , H04N19/436
摘要： A system for processing a bit map of pixel data signals representative of a multi-dimensional array of imagery data (e.g. alpha-numeric text) for transmission over a facsimile communication channel are compressed by providing a plurality of data compression units, a respective one of which is capable of compressing data supplied to it at a compression rate that is only a fraction of the data rate. The bit map is subsampled by demultiplexing the bit map into sub-arrays of data. The sub-array data is coupled to respective sets of compression units, which executes parallel, two-dimensional compression of the demultiplexed sub-array data. Even though the data subsamples associated with successive rows of the bit map are non-consecutive, and therefore may contribute to a reduction in compression performance in the horizontal direction, because the data is text, successive data samples within each column of a sub-array are inherently more highly correlated with one another than data values that are encountered within respective rows of the original bit reap. As a consequence, the two-dimensional data compression operator executed by each unit suffers no loss in output signal quality.
摘要翻译：用于处理表示用于通过传真通信信道传输的图像数据（例如，字母数字文本）的多维阵列的像素数据信号的位图的系统被压缩，通过提供多个数据压缩单元，其能够以仅仅是数据速率的一部分的压缩率压缩提供给它的数据。位图通过将位图解复用为数据的子阵列进行二次采样。子阵列数据耦合到相应的压缩单元集合，其执行解复用子阵列数据的并行二维压缩。即使与位图的连续行相关联的数据子样本是非连续的，并且因此可能有助于水平方向上的压缩性能的降低，因为数据是文本，子阵列的每列中的连续数据样本相对于在原始位收集的相应行中遇到的数据值彼此内在地更高度相关。结果，由每个单元执行的二维数据压缩算子在输出信号质量上没有损失。

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