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1. 发明授权

US07836258B2 Dynamic data cache invalidate with data dependent expiration 有权
标题翻译：动态数据缓存无效，与数据相关的到期
公开(公告)号：US07836258B2
公开(公告)日：2010-11-16
申请号：US11559090
申请日：2006-11-13
申请人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich
发明人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich
IPC分类号： G06F13/00
CPC分类号： G06F12/0875 , G06F12/0808 , G06F12/1045 , G06T1/60
摘要： According to embodiments of the invention, a distributed time base signal may be coupled to a memory directory which provides address translation for data located within a memory cache. The memory directory may have attribute bits which indicate whether or not the memory entries have been accessed by the distributed time base signal. Furthermore, the memory directory may have attribute bits which indicate whether or not a memory directory entry should be considered invalid after an access to the memory entry by the distributed time base signal. If the memory directory entry has been accessed by the distributed time base signal and the memory directory entry should be considered invalid after the access by the time base signal, any attempted address translation using the memory directory entry may cause a cache miss. The cache miss may initiate the retrieval of valid data from memory.
摘要翻译：根据本发明的实施例，分布式时基信号可以耦合到为位于存储器高速缓存内的数据提供地址转换的存储器目录。存储器目录可以具有指示存储器条目是否已经被分布式时基信号访问的属性位。此外，存储器目录可以具有指示在通过分布式时基信号访问存储器条目之后存储目录条目是否应被视为无效的属性位。如果通过分布式时基信号访问存储器目录条目，并且在通过时基信号访问之后，存储器目录条目应被视为无效，则使用存储器目录条目的任何尝试的地址转换可能导致高速缓存未命中。高速缓存未命中可以启动从存储器检索有效数据。

2. 发明授权

US07746777B2 Centralized bandwidth management method and apparatus 有权
标题翻译：集中带宽管理方法和装置
公开(公告)号：US07746777B2
公开(公告)日：2010-06-29
申请号：US10674977
申请日：2003-09-30
申请人： Jeffrey Douglas Brown , Scott Douglas Clark , John David Irish
发明人： Jeffrey Douglas Brown , Scott Douglas Clark , John David Irish
IPC分类号： G01R31/08
CPC分类号： G06F9/5011
摘要： Disclosed is an apparatus and method for granting guaranteed bandwidth between one or more data transmission priority requesting sources and one or more resources upon request. Data sources that do not request an assigned bandwidth are served on a “best efforts” basis. The system allows additional bandwidth to priority requesting sources when it is determined that the resource and/or the communication path to the resource is under-utilized. The system further allows the granted bandwidth to be shared by more than one source in a multiprocessor system.
摘要翻译：公开了一种用于根据请求在一个或多个数据传输优先级请求源和一个或多个资源之间授予保证带宽的装置和方法。不要求分配带宽的数据源以“尽力而为”的方式提供。当确定资源和/或资源的通信路径利用不足时，该系统允许对优先级请求源的附加带宽。该系统还允许在多处理器系统中由多于一个源共享授予的带宽。

3. 发明授权

US07721123B2 Method and apparatus for managing the power consumption of a data processing system 失效
标题翻译：用于管理数据处理系统的功耗的方法和装置
公开(公告)号：US07721123B2
公开(公告)日：2010-05-18
申请号：US12025649
申请日：2008-02-04
申请人： Shigehiro Asano , Jeffrey Douglas Brown , Michael Norman Day , Charles Ray Johns , James Allan Kahle , Alvan Wing Ng , Michael Fan Wang , Thuong Quang Truong
发明人： Shigehiro Asano , Jeffrey Douglas Brown , Michael Norman Day , Charles Ray Johns , James Allan Kahle , Alvan Wing Ng , Michael Fan Wang , Thuong Quang Truong
IPC分类号： G06F1/26 , G06F1/32
CPC分类号： G06F1/3203 , G06F12/0831 , G06F12/1027 , G06F2212/1028 , Y02D10/13
摘要： A component of a microprocessor-based data processing system, which includes features for regulating power consumption in snoopable components and has gating off memory coherency properties, is determined to be in a relatively inactive state and is transitioned to a non-snoopable low power mode. Then, when a snoop request occurs, a retry protocol is sent in response to the snoop request. In conjunction with the retry protocol, a signal is sent to bring the component into snoopable mode. When the retry snoop is requested, the component is in full power mode and can properly respond to the snoop request. After the snoop request has been satisfied, the component again enters into a low power mode. Therefore, the component is able to enter into a low power mode in between snoops
摘要翻译：基于微处理器的数据处理系统的一个组件，其包括用于调节可窥探组件中的功耗并具有门控存储器一致性属性的特征，被确定为处于相对不活动状态，并且转换到不可窥探的低功率模式。然后，当侦听请求发生时，响应于窥探请求发送重试协议。结合重试协议，发送信号使组件进入窥探模式。当请求重试监听时，组件处于全功率模式，并可以正常响应窥探请求。在snoop请求已满足后，组件再次进入低功耗模式。因此，该组件能够在两个snoops之间进入低功耗模式

4. 发明申请

US20080180441A1 Stochastic Culling of Rays with Increased Depth of Recursion 有权
标题翻译：随机递减光栅深度递减
公开(公告)号：US20080180441A1
公开(公告)日：2008-07-31
申请号：US11627464
申请日：2007-01-26
申请人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich
发明人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich
IPC分类号： G06T15/10
CPC分类号： G06T15/40 , G06T15/06
摘要： According to embodiments of the invention, rays may be stochastically culled before they are issued into the three-dimensional scene. Stochastically culling rays may reduce the number of rays which need to be traced by the image processing system. Furthermore, by stochastically culling rays before they are issued into the three-dimensional scene, minor imperfections may be added to the final rendered image, thereby improving the realism of the rendered image. Therefore, stochastic culling of rays may improve the performance of the image processing system by reducing workload imposed on the image processing system and improving the realism of the images rendered by the image processing system. According to another embodiment of the invention, the realism of images rendered by the image processing system may also be improved by stochastically adding secondary rays after ray-primitive intersections have occurred.
摘要翻译：根据本发明的实施例，射线可以在它们被发放到三维场景之前被随机地淘汰。随机剔除光线可能减少图像处理系统需要追踪的光线数量。此外，通过在将它们发布到三维场景之前随机剔除光线，可以将最小的缺陷添加到最终渲染图像，从而改善渲染图像的真实性。因此，通过减少图像处理系统的工作量，提高图像处理系统所呈现的图像的真实性，可以提高图像处理系统的性能。根据本发明的另一个实施例，图像处理系统呈现的图像的真实性也可以通过在发生光线原始交点之后随机添加二次光线来改善。

5. 发明申请

US20080122853A1 Dynamic Spatial Index Remapping for Optimal Aggregate Performance 有权
标题翻译：动态空间索引重映射优化聚合性能
公开(公告)号：US20080122853A1
公开(公告)日：2008-05-29
申请号：US11564010
申请日：2006-11-28
申请人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich , Robert Allen Shearer
发明人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich , Robert Allen Shearer
IPC分类号： G06T1/00
CPC分类号： G06T1/20 , G06F9/5088 , G06F2209/5022
摘要： By mapping leaf nodes of a spatial index to processing elements, efficient distribution of workload in an image processing system may be achieved. In addition, processing elements may use a thread table to redistribute workload from processing elements which are experiencing an increased workload to processing elements which may be idle. Furthermore, the workload experienced by processing elements may be monitored in order to determine if workload is balanced. Periodically the leaf nodes for which processing elements are responsible may be remapped in response to a detected imbalance in workload. By monitoring the workload experienced by the processing elements and remapping leaf nodes to different processing elements in response to unbalanced workload, efficient distribution of workload may be maintained. Efficient distribution of workload may improve the performance of the image processing system.
摘要翻译：通过将空间索引的叶节点映射到处理元素，可以实现图像处理系统中的工作负载的有效分布。此外，处理元件可以使用线程表来将正在经历增加的工作负载的处理元件的工作负载重新分配给处理可能是空闲的元件。此外，可以监视处理元件所经历的工作负载，以确定工作负载是否平衡。响应于检测到的工作负载不平衡，周期性地对处理元件负责的叶节点进行重新映射。通过监视处理元件所遇到的工作量并响应不平衡工作负载将叶节点重新映射到不同的处理元件，可以保持工作负载的有效分配。工作负载的高效分配可能会提高图像处理系统的性能。

6. 发明授权

US07124257B2 Bus interface controller for determining access counts 失效
标题翻译：用于确定访问计数的总线接口控制器
公开(公告)号：US07124257B2
公开(公告)日：2006-10-17
申请号：US10313682
申请日：2002-12-05
申请人： Jeffrey Douglas Brown , David John Krolak , Jeffrey Joseph Ruedinger , Scott Douglas Clark
发明人： Jeffrey Douglas Brown , David John Krolak , Jeffrey Joseph Ruedinger , Scott Douglas Clark
IPC分类号： G06F12/00
CPC分类号： G06F12/0888
摘要： The present invention provides for an integrated circuit (IC) bus system. A local IC is coupled to a remote IC through a bus interface. A local memory is coupled to the local IC. A bus interface controller is employable to track data transfer requests from the remote IC for data address that are contained within at least one segment of the first partitioned memory range. The bus interface controller is further employable to stop the forwarding of a data transfer request generated within the local IC to the remote IC, if the memory segment count corresponding to the data address of the locally generated data transfer request equals zero.
摘要翻译：本发明提供一种集成电路（IC）总线系统。本地IC通过总线接口耦合到远程IC。本地存储器耦合到本地IC。总线接口控制器可用于跟踪来自远程IC的数据传输请求，用于包含在第一分区存储器范围的至少一个段中的数据地址。如果对应于本地产生的数据传输请求的数据地址的存储器段计数等于零，则总线接口控制器还可用于停止将本地IC内产生的数据传输请求转发给远程IC。

7. 发明授权

US07099975B2 Method of resource arbitration 失效
标题翻译：资源仲裁方法
公开(公告)号：US07099975B2
公开(公告)日：2006-08-29
申请号：US10730952
申请日：2003-12-09
申请人： Jeffrey Douglas Brown , Scott Douglas Clark , Charles Ray Johns , Takeshi Yamazaki
发明人： Jeffrey Douglas Brown , Scott Douglas Clark , Charles Ray Johns , Takeshi Yamazaki
IPC分类号： G06F12/00
CPC分类号： G06F13/3625
摘要： An improved method and apparatus for resource arbitration. Four priority classes, managed high (MH), managed low (ML), opportunistic high (OH) and opportunistic low (OL), are defined. A priority class is assigned to each resource access request. An access request concentrator (ARC) is created for each resource, through which the resource is accessed. An access request is chosen at each ARC using the priority order MH, ML, OH, and OL, in decreasing order of priority. If OH priority class resource access requests are locked out, the priority order is temporarily changed to OH, OL, MH, and ML, in decreasing order of priority. If OL priority class resource access requests are locked out, the priority order is temporarily changed to MH, OL, OH, and ML, in decreasing order of priority.
摘要翻译：一种改进的资源仲裁方法和装置。定义了四个优先级，管理高（MH），管理低（ML），机会高（OH）和机会主义低（OL）。优先级分配给每个资源访问请求。为每个资源创建访问请求集中器（ARC），通过该资源访问资源。在优先级顺序为MH，ML，OH和OL的每个ARC中选择访问请求。如果OH优先级资源访问请求被锁定，优先级顺序将按照优先级的降序暂时更改为OH，OL，MH和ML。如果OL优先级资源访问请求被锁定，优先级顺序将按照优先级的降序临时更改为MH，OL，OH和ML。

8. 发明授权

US09041713B2 Dynamic spatial index remapping for optimal aggregate performance 有权
标题翻译：动态空间索引重映射用于最佳聚合性能
公开(公告)号：US09041713B2
公开(公告)日：2015-05-26
申请号：US11564010
申请日：2006-11-28
申请人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich , Robert Allen Shearer
发明人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich , Robert Allen Shearer
IPC分类号： G06T15/50 , G06T15/60 , G06T15/00 , G06T1/20 , G06F9/50
CPC分类号： G06T1/20 , G06F9/5088 , G06F2209/5022
摘要： By mapping leaf nodes of a spatial index to processing elements, efficient distribution of workload in an image processing system may be achieved. In addition, processing elements may use a thread table to redistribute workload from processing elements which are experiencing an increased workload to processing elements which may be idle. Furthermore, the workload experienced by processing elements may be monitored in order to determine if workload is balanced. Periodically the leaf nodes for which processing elements are responsible may be remapped in response to a detected imbalance in workload. By monitoring the workload experienced by the processing elements and remapping leaf nodes to different processing elements in response to unbalanced workload, efficient distribution of workload may be maintained. Efficient distribution of workload may improve the performance of the image processing system.
摘要翻译：通过将空间索引的叶节点映射到处理元素，可以实现图像处理系统中的工作负载的有效分布。此外，处理元件可以使用线程表来将正在经历增加的工作负载的处理元件的工作负载重新分配给处理可能是空闲的元件。此外，可以监视处理元件所经历的工作负载，以确定工作负载是否平衡。响应于检测到的工作负载不平衡，周期性地对处理元件负责的叶节点进行重新映射。通过监视处理元件所遇到的工作量并响应不平衡工作负载将叶节点重新映射到不同的处理元件，可以保持工作负载的有效分配。工作负载的高效分配可能会提高图像处理系统的性能。

9. 发明授权

US08248402B2 Adaptive ray data reorder for optimized ray temporal locality 失效
标题翻译：自适应射线数据重新排序以优化射线时间局部性
公开(公告)号：US08248402B2
公开(公告)日：2012-08-21
申请号：US11564030
申请日：2006-11-28
申请人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich
发明人： Jeffrey Douglas Brown , Russell Dean Hoover , Eric Oliver Mejdrich
IPC分类号： G06T15/00 , G06T17/00 , G06T15/50 , G06T15/20 , G09G5/00
CPC分类号： G06T15/06
摘要： According to embodiments of the invention, secondary rays may be pooled after they are generated by a vector throughput engine. After pooling the secondary rays, they may be reordered according to similarities in trajectory and originating location. The secondary rays may be sent in the new order to a workload manager for spatial index traversal. The reordering of the secondary rays may cause rays which traverse similar portions of the spatial index to be traversed immediately following (or shortly thereafter) one another. Consequently, the necessary portions of the spatial index may remain within the workload manager's memory cache, thereby reducing the number of cache misses and the amount of time necessary to traverse secondary rays through the spatial index. The reduction in time necessary to traverse the secondary rays through the spatial index may improve the overall performance of the image processing system.
摘要翻译：根据本发明的实施例，在由矢量通过量引擎生成二次射线之后，可以汇集二次射线。在汇集二次射线之后，它们可以根据轨迹和起始位置的相似性重新排序。二次射线可以以新的顺序发送到工作负载管理器，用于空间索引遍历。二次射线的重新排序可能导致穿过空间索引的类似部分的光线在彼此之后（或不久之后）紧随其后穿过。因此，空间索引的必要部分可以保留在工作负载管理器的存储器高速缓存内，从而减少高速缓存未命中的数量以及穿过空间索引穿过二次射线所需的时间量。通过空间索引穿过二次射线所需的时间的减少可以提高图像处理系统的整体性能。

10. 发明授权

US08112590B2 Methods and apparatus for reducing command processing latency while maintaining coherence 失效
标题翻译：减少命令处理延迟同时保持一致性的方法和装置
公开(公告)号：US08112590B2
公开(公告)日：2012-02-07
申请号：US11846697
申请日：2007-08-29
申请人： Jeffrey Douglas Brown , Scott Douglas Clark , Mark S. Fredrickson , Charles Ray Johns , David John Krolak
发明人： Jeffrey Douglas Brown , Scott Douglas Clark , Mark S. Fredrickson , Charles Ray Johns , David John Krolak
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F12/0804 , G06F12/0831
摘要： In a first aspect, a first method of reducing command processing latency while maintaining memory coherence is provided. The first method includes the steps of (1) providing a memory map including memory addresses available to a system; and (2) arranging the memory addresses into a plurality of groups. At least one of the groups does not require the system, in response to a command that requires access to a memory address in the group from a bus unit, to get permission from all remaining bus units included in the system to maintain memory coherence. Numerous other aspects are provided.
摘要翻译：在第一方面，提供了一种在维持存储器一致性的同时降低命令处理等待时间的方法。第一种方法包括以下步骤：（1）提供包括可用于系统的存储器地址的存储器映射; 和（2）将存储器地址排列成多个组。响应于需要访问来自总线单元的组中的存储器地址的命令，组中的至少一个不需要系统以从包括在系统中的所有剩余总线单元获得许可以维持存储器一致性。提供了许多其他方面。

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