公开(公告)号：US06486884B1

公开(公告)日：2002-11-26

申请号：US09314561

申请日：1999-05-19

申请人： Milivoje Aleksic ,  Andrew E. Gruber ,  Brad Holister ,  Carl K. Mizuyabu

发明人： Milivoje Aleksic ,  Andrew E. Gruber ,  Brad Holister ,  Carl K. Mizuyabu

IPC分类号： G06F1206

CPC分类号： H04N19/423

摘要： A method and apparatus for storing sequential data words associated with a block of data in a non-linear manner within the data block is taught such that any row or column associated with the data block may be accessed using a burst access. A row, or column of data accessed by a burst frees up instruction bandwidth of a video controller. In particular, it is assured that each row and column of data associated with the data block has at least one sequential pair of data words associated with it. By assuring at least one sequential pair of data words, it is possible to issue a burst request for a minimum of two words of data with each row access, or column access of the video controller.

摘要翻译： 教导以数据块中的非线性方式存储与数据块相关联的顺序数据字的方法和装置，使得可以使用突发存取来访问与数据块相关联的任何行或列。 由突发访问的一行或一列数据释放视频控制器的指令带宽。 特别地，确保与数据块相关联的每一行和数据列具有与其相关联的至少一个连续数据字对。 通过确保至少一个顺序的数据字对，可以对视频控制器的每一行访问或列访问发出至少两个数据字的突发请求。

公开(公告)号：US06504549B1

公开(公告)日：2003-01-07

申请号：US09314208

申请日：1999-05-19

申请人： Brad Holister ,  Andrew E. Gruber ,  Carl K. Mizuyabu

发明人： Brad Holister ,  Andrew E. Gruber ,  Carl K. Mizuyabu

IPC分类号： G06F1318

CPC分类号： G06F13/161 ,  G09G5/393 ,  G09G2360/12 ,  G09G2360/121

摘要： A method and apparatus dealing with optimizing the arbitration between clients requesting data. In particular, a set of rules determining which client request will provide an optimized subsequent memory access is implemented. The highest rule recognizes a client in urgent need of data, generally because it has not been services by the arbiter. The next highest-ranking rules would recognize data accesses of the same operation, such as read or write, and to the same page of memory, or requests to a different bank of memory. The next highest ranking rules would be for data accesses on the same page currently being accessed, but for a different operation, and for a different operation and to a different bank. Finally, any other client requests to a different page on the same bank/ would have the lowest priority. Such a request optimizes bandwidth of the memory bus.

摘要翻译： 一种处理优化请求数据的客户端仲裁的方法和装置。 特别地，实现了一组确定哪个客户端请求将提供优化的后续存储器访问的规则。 最高规则意识到客户急需数据，通常是因为它没有由仲裁者提供服务。 下一个最高级别的规则将识别相同操作的数据访问，例如读取或写入，以及同一页面的内存，或者请求到不同的存储器组。 下一个最高排名的规则将是当前正在访问的同一页面上的数据访问，但是对于不同的操作，以及不同的操作和不同的银行。 最后，任何其他客户端对同一个银行/其他页面的请求将具有最低优先级。 这样的请求优化了存储器总线的带宽。