Dynamic direction look ahead read buffer
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专利名称：Dynamic direction look ahead read buffer 发明人：Gary D. Hicok,Eric A. Hildebrandt,Micheal H.
Zhu
申请号：US08/607372
申请日：19960227
公开号：US05588128A
公开日：
19961224
专利内容由知识产权出版社提供
摘要：A look ahead read buffer automatically senses the direction of the read sequence, sets the direction based on the current and previous read addresses, and prefetches data from memory to allow a Host device such as a CPU to read data out of the look ahead read buffer with no wait states, rather than accessing this data directly in slower memory that requires wait states. This read buffer is especially useful in applications such as display controllers that store and retrieve data in sequential format. The display memory may be partitioned into pages, and the read buffer will then determine and set the appropriate direction at page boundaries, and will not change direction within that page of display data. In addition, the read buffer inhibits reads that occur outside of the current page of display data, ignoring the effects of other reads that do not directly affect the display.
申请人：VLSI TECHNOLOGY, INC.
代理人：Harry M. Weiss,Jeffrey D.Harry M. Weiss & Associates, P Moy
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