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1. 发明授权

US06625671B1 Compression of buffered data 有权
标题翻译：压缩缓冲数据
公开(公告)号：US06625671B1
公开(公告)日：2003-09-23
申请号：US09303704
申请日：1999-05-03
申请人： William C. Collette , Richard L. Cain , Brian A. Johnson , Steve Flattum , Jim Kunz , Mark Mansee
发明人： William C. Collette , Richard L. Cain , Brian A. Johnson , Steve Flattum , Jim Kunz , Mark Mansee
IPC分类号： G06F1300
CPC分类号： G06F13/4059
摘要： A method and apparatus is presented providing high-performance lossless data compression implemented in hardware for improving network communications. A compression module useful in a switching platform is also presented capable of compressing data stored in buffer memory. Instructions for a compression task are assigned to the compression module by a microprocessor writing a control block to a queue in stored local memory. The control block informs the compression module of the size and location of the unprocessed data, as well as a location in the buffer memory for storing the processed data and the maximum allowed size for the compressed data. Using this technique, the microprocessor can limit the compression of data to those data streams allowing compression, to those segments that are susceptible to compression, and to those segments that are large enough to show a transmission speed improvement via compression.
摘要翻译：提出了一种提供在硬件中实现的用于改善网络通信的高性能无损数据压缩的方法和装置。还提供了一种在交换平台中有用的压缩模块，其能够压缩存储在缓冲存储器中的数据。通过微处理器将压缩任务的指令分配给压缩模块，该微处理器将控制块写入存储的本地存储器中的队列。控制块向压缩模块通知未处理数据的大小和位置以及缓冲存储器中用于存储经处理数据的位置和压缩数据的最大允许大小。使用这种技术，微处理器可以将数据的压缩限制到允许压缩的那些数据流，以及易受压缩的那些段，以及那些足够大以通过压缩显示传输速度改进的段。

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