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21. 发明授权

US08217935B2 Apparatus and method for ray tracing with block floating point data 有权
标题翻译：用于具有块浮点数据的光线跟踪的装置和方法
公开(公告)号：US08217935B2
公开(公告)日：2012-07-10
申请号：US12059559
申请日：2008-03-31
申请人： Stephen Purcell , Ryan R. Salsbury , James Alexander McCombe , Sean Matthew Gies
发明人： Stephen Purcell , Ryan R. Salsbury , James Alexander McCombe , Sean Matthew Gies
IPC分类号： G06T15/30
CPC分类号： G06T15/06
摘要： Systems and methods include high throughput and/or parallelized ray/geometric shape intersection testing using intersection testing resources accepting and operating with block floating point data. Block floating point data sacrifices precision of scene location in ways that maintain precision where more beneficial, and allow reduced precision where beneficial. In particular, rays, acceleration structures, and primitives can be represented in a variety of block floating point formats, such that storage requirements for storing such data can be reduced. Hardware accelerated intersection testing can be provided with reduced sized math units, with reduced routing requirements. A driver for hardware accelerators can maintain full-precision versions of rays and primitives to allow reduced communication requirements for high throughput intersection testing in loosely coupled systems. Embodiments also can include using BFP formatted data in programmable test cells or more general purpose processing elements.
摘要翻译：系统和方法包括使用交叉点测试资源接受和操作块浮点数据的高吞吐量和/或并行化的射线/几何形状的交点测试。块浮点数据牺牲场景位置的精度，保持精度更有利，并有利于降低精度。特别地，可以以各种块浮点格式来表示光线，加速度结构和原语，从而可以减少用于存储这种数据的存储要求。硬件加速交叉测试可以提供减小尺寸的数学单位，并减少路由要求。用于硬件加速器的驱动程序可以保持光线和图元的全精度版本，以便在松散耦合的系统中实现高吞吐量交叉测试的通信要求降低。实施例还可以包括在可编程测试单元或更多通用处理元件中使用BFP格式的数据。

22. 发明申请

US20110050698A1 ARCHITECTURES FOR PARALLELIZED INTERSECTION TESTING AND SHADING FOR RAY-TRACING RENDERING 有权
标题翻译：用于平行跟踪测试和边缘渲染的架构
公开(公告)号：US20110050698A1
公开(公告)日：2011-03-03
申请号：US12941884
申请日：2010-11-08
申请人： Luke Tilman Peterson , James Alexander McCombe , Ryan R. Salsbury , Stephen Purcell
发明人： Luke Tilman Peterson , James Alexander McCombe , Ryan R. Salsbury , Stephen Purcell
IPC分类号： G06T15/50
CPC分类号： G06T15/06 , G06T15/005 , G06T15/50 , G06T15/80
摘要： Ray tracing scenes is accomplished using a plurality of intersection testing resources coupled with a plurality of shading resources, communicative in the aggregate through links/queues. A queue from testing to shading comprises respective ray/primitive intersection indications, comprising a ray identifier. A queue from shading to testing comprises identifiers of new rays to be tested, wherein data defining the rays is separately stored in memories distributed among the intersection testing resources. Ray definition data can be retained in distributed memories until rays complete intersection testing, and be selected for testing multiple times based on ray identifier. A structure of acceleration shapes can be used. Packets of ray identifiers and shape data can be passed among the intersection testing resources, and each resource can test rays identified in the packet, and for which definition data is present in its memory. Test results for acceleration shapes are used to collect rays against acceleration shapes, and closest detection ray/primitive intersections are indicated by sending ray identifiers to shading resources.
摘要翻译：光线跟踪场景是利用与多个着色资源相结合的多个交叉点测试资源来实现的，通过链路/队列在聚合中进行通信。从测试到阴影的队列包括相应的射线/原始相交指示，包括射线标识符。从阴影到测试的队列包括要测试的新射线的标识符，其中定义射线的数据被分别存储在分布在交叉点测试资源之间的存储器中。光线定义数据可以保留在分布式存储器中，直到光线完成相交测试，并根据光线标识符多次选择进行测试。可以使用加速形状的结构。光线标识符和形状数据的包可以在交叉点测试资源之间传递，并且每个资源可以测试在分组中标识的射线，并且其存储在哪个定义数据中。加速度形状的测试结果用于收集与加速度形状相对应的射线，最近的检测射线/原始相交是通过将遮蔽资源发送射线标识符来表示的。

23. 发明授权

US07830379B2 Architectures for parallelized intersection testing and shading for ray-tracing rendering 有权
标题翻译：用于光线跟踪渲染的并行交叉测试和阴影的架构
公开(公告)号：US07830379B2
公开(公告)日：2010-11-09
申请号：US12408478
申请日：2009-03-20
申请人： Luke Tilman Peterson , James Alexander McCombe , Ryan R. Salsbury , Stephen Purcell
发明人： Luke Tilman Peterson , James Alexander McCombe , Ryan R. Salsbury , Stephen Purcell
IPC分类号： G06T15/50
CPC分类号： G06T15/06 , G06T15/005 , G06T15/50 , G06T15/80
摘要： Ray tracing scenes is accomplished using a plurality of intersection testing resources coupled with a plurality of shading resources, communicative in the aggregate through links/queues. A queue from testing to shading comprises respective ray/primitive intersection indications, comprising a ray identifier. A queue from shading to testing comprises identifiers of new rays to be tested, wherein data defining the rays is separately stored in memories distributed among the intersection testing resources. Ray definition data can be retained in distributed memories until rays complete intersection testing, and be selected for testing multiple times based on ray identifier. A structure of acceleration shapes can be used. Packets of ray identifiers and shape data can be passed among the intersection testing resources, and each resource can test rays identified in the packet, and for which definition data is present in its memory. Test results for acceleration shapes are used to collect rays against acceleration shapes, and closest detection ray/primitive intersections are indicated by sending ray identifiers to shading resources.
摘要翻译：光线跟踪场景是利用与多个着色资源相结合的多个交叉点测试资源来实现的，通过链路/队列在聚合中进行通信。从测试到阴影的队列包括相应的射线/原始相交指示，包括射线标识符。从阴影到测试的队列包括要测试的新射线的标识符，其中定义射线的数据被分别存储在分布在交叉点测试资源之间的存储器中。光线定义数据可以保留在分布式存储器中，直到光线完成相交测试，并根据光线标识符多次选择进行测试。可以使用加速形状的结构。光线标识符和形状数据的包可以在交叉点测试资源之间传递，并且每个资源可以测试在分组中标识的射线，并且其存储在哪个定义数据中。加速度形状的测试结果用于收集与加速度形状相对应的射线，最近的检测射线/原始相交是通过将遮蔽资源发送射线标识符来表示的。

24. 发明申请

US20090244058A1 APPARATUS AND METHOD FOR RAY TRACING WITH BLOCK FLOATING POINT DATA 有权
标题翻译：利用块浮点数据进行跟踪跟踪的装置和方法
公开(公告)号：US20090244058A1
公开(公告)日：2009-10-01
申请号：US12059559
申请日：2008-03-31
申请人： Stephen Purcell , Ryan R. Salsbury , James Alexander McCombe , Sean Matthew Gies
发明人： Stephen Purcell , Ryan R. Salsbury , James Alexander McCombe , Sean Matthew Gies
IPC分类号： G06F17/00
CPC分类号： G06T15/06
摘要： Systems and methods include high throughput and/or parallelized ray/geometric shape intersection testing using intersection testing resources accepting and operating with block floating point data. Block floating point data sacrifices precision of scene location in ways that maintain precision where more beneficial, and allow reduced precision where beneficial. In particular, rays, acceleration structures, and primitives can be represented in a variety of block floating point formats, such that storage requirements for storing such data can be reduced. Hardware accelerated intersection testing can be provided with reduced sized math units, with reduced routing requirements. A driver for hardware accelerators can maintain full-precision versions of rays and primitives to allow reduced communication requirements for high throughput intersection testing in loosely coupled systems. Embodiments also can include using BFP formatted data in programmable test cells or more general purpose processing elements.
摘要翻译：系统和方法包括使用交叉点测试资源接受和操作块浮点数据的高吞吐量和/或并行化的射线/几何形状的交点测试。块浮点数据牺牲场景位置的精度，保持精度更有利，并有利于降低精度。特别地，可以以各种块浮点格式来表示光线，加速度结构和原语，从而可以减少用于存储这种数据的存储要求。硬件加速交叉测试可以提供减小尺寸的数学单位，并减少路由要求。用于硬件加速器的驱动程序可以保持光线和图元的全精度版本，以便在松散耦合的系统中实现高吞吐量交叉测试的通信要求降低。实施例还可以包括在可编程测试单元或更多通用处理元件中使用BFP格式的数据。

25. 发明申请

US20060271975A1 Time-shifting audio and video programs 审中-公开
标题翻译：时移音频和视频节目
公开(公告)号：US20060271975A1
公开(公告)日：2006-11-30
申请号：US11135755
申请日：2005-05-23
申请人： Edmund Sun , Stephen Purcell , Wai-Ting Chen
发明人： Edmund Sun , Stephen Purcell , Wai-Ting Chen
IPC分类号： H04N7/173 , G06F3/00 , H04N5/445
CPC分类号： H04N5/76 , H04N5/775 , H04N5/781 , H04N5/907 , H04N9/8042 , H04N21/2747 , H04N21/4184 , H04N21/4334 , H04N21/43622 , H04N21/6581
摘要： Methods and apparatus, including computer program products, for recording and replaying audio and video programs. A device includes a video input controller, a video output controller, a command interface, a network adapter, and control circuitry. The video input controller receives an audiovisual program. The video output controller is operable to output a video signal representing the audiovisual program. The command interface is operable to receive input requesting that the audiovisual program be recorded. The network adapter is operable to connect the device to a data communication network, where the device is addressable over the data communication network through the network adapter. The control circuitry can receive the input requesting that the audiovisual program be recorded. The control circuitry can cause the requested audiovisual program to be transmitted to a remote storage device over the data communication network through the network adapter and to be recorded at the remote storage device.
摘要翻译：用于记录和重放音频和视频节目的方法和装置，包括计算机程序产品。一种设备包括视频输入控制器，视频输出控制器，命令接口，网络适配器和控制电路。视频输入控制器接收视听节目。视频输出控制器可操作以输出表示视听节目的视频信号。命令接口可操作以接收请求记录视听节目的输入。网络适配器可操作以将设备连接到数据通信网络，其中设备可通过网络适配器在数据通信网络上寻址。控制电路可以接收请求记录视听节目的输入。控制电路可以使请求的视听节目通过网络适配器通过数据通信网络发送到远程存储设备，并被记录在远程存储设备中。

26. 发明申请

US20050210094A1 Method and system to implement an improved floating point adder with integrated adding and rounding 有权
标题翻译：实现具有集成加法和舍入的改进的浮点加法器的方法和系统
公开(公告)号：US20050210094A1
公开(公告)日：2005-09-22
申请号：US11140410
申请日：2005-05-27
申请人： Stephen Purcell
发明人： Stephen Purcell
IPC分类号： G06F7/42 , G06F7/485 , G06F7/499 , G06F7/50
CPC分类号： G06F7/485 , G06F7/49947
摘要： Systems and methods to implement an improved floating point adder are presented. The adder integrates adding and rounding. According to an exemplary method, of adding two floating point numbers together, a first mantissa, a second mantissa, and an input bit are added together to produce a third mantissa. The third mantissa is normalized to produce a final mantissa. The third mantissa and the final mantissa are correctly rounded as a result of the act of adding, so that the final mantissa does not require processing by a follow on rounding stage.
摘要翻译：提出了实现改进的浮点加法器的系统和方法。加法器集成加法和舍入。根据示例性方法，将两个浮点数相加在一起，将第一尾数，第二尾数和输入比特相加在一起以产生第三尾数。第三尾数被归一化以产生最后的尾数。作为添加动作的结果，第三尾数和最后尾数被正确舍入，使得最终尾数不需要通过舍入阶段进行处理。

27. 发明申请

US20050086650A1 Transferring execution from one instruction stream to another 有权
标题翻译：将执行从一个指令流传输到另一个指令流
公开(公告)号：US20050086650A1
公开(公告)日：2005-04-21
申请号：US11003768
申请日：2004-12-02
申请人： John Yates , David Reese , Paul Hohensee , Stephen Purcell , Korbin Van Dyke
发明人： John Yates , David Reese , Paul Hohensee , Stephen Purcell , Korbin Van Dyke
IPC分类号： G06F9/455 , G06F9/45 , G06F7/38 , G06F9/44 , G06F15/00 , G06F15/76
CPC分类号： G06F9/45533
摘要： A computer has instruction pipeline circuitry capable of executing two instruction set architectures (ISA's). A binary translator translates at least a selected portion of a computer program from a lower-performance one of the ISA's to a higher-performance one of the ISA's. Hardware initiates a query when about to execute a program region coded in the lower-performance ISA, to determine whether a higher-performance translation exists. If so, the about-to-be-executed instruction is aborted, and control transfers to the higher-performance translation. After execution of the higher-performance translation, execution of the lower-performance region is reestablished at a point downstream from the aborted instruction, in a context logically equivalent to that which would have prevailed had the code of the lower-performance region been allowed to proceed.
摘要翻译：计算机具有能够执行两个指令集架构（ISA）的指令流水线电路。二进制翻译器至少将计算机程序的选定部分从ISA的较低性能转换为ISA的更高性能的一个。当即将执行在低性能ISA中编码的程序区域时，硬件启动查询，以确定是否存在更高性能的转换。如果是这样，即将执行的指令被中止，并且控制转移到更高性能的转换。执行较高性能的翻译后，在排除后的指令下游的一个点重新建立较低性能区域的执行，在逻辑上相当于在较低性能区域的代码被允许的情况下继续。

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