公开(公告)号：US20060038822A1

公开(公告)日：2006-02-23

申请号：US10924068

申请日：2004-08-23

申请人： Jiangming Xu ,  Wen-Chung Chen ,  Yuanfeng Wang ,  Liang Li ,  John Brothers ,  Boris Prokopenko

发明人： Jiangming Xu ,  Wen-Chung Chen ,  Yuanfeng Wang ,  Liang Li ,  John Brothers ,  Boris Prokopenko

IPC分类号： G06T9/00 ,  G09G5/36

CPC分类号： G06T15/60 ,  G06T1/60

摘要： The computer graphics system is configured to improve the performance of a stencil shadow volume method for rendering shadows. The apparatus and methods utilize a combination of compressed and uncompressed stencil buffers in coordination with compressed and uncompressed depth data buffers. An uncompressed stencil buffer is capable of storing stencil shadow volume data for each pixel and a compressed stencil buffer is capable of storing stencil shadow volume data for a group of pixels. The compressed stencil buffer is utilized with a compressed stencil buffer cache to perform a stencil shadow volume operation more efficiently than present methods.

摘要翻译： 计算机图形系统被配置为提高用于渲染阴影的模板阴影卷方法的性能。 该装置和方法利用压缩和未压缩模板缓冲器的组合与压缩和未压缩的深度数据缓冲器协调。 未压缩的模板缓冲器能够存储每个像素的模板阴影体积数据，并且压缩模板缓冲器能够存储一组像素的模板阴影体积数据。 压缩模板缓冲器与压缩模板缓冲区缓存一起使用，以比当前方法更有效地执行模板阴影卷操作。

公开(公告)号：US20050202795A1

公开(公告)日：2005-09-15

申请号：US10422321

申请日：2003-04-24

申请人： YaFei Tian ,  Chenyang Yang ,  Feng Wu ,  Liang Zhang ,  Liang Li ,  Noi Banavong

发明人： YaFei Tian ,  Chenyang Yang ,  Feng Wu ,  Liang Zhang ,  Liang Li ,  Noi Banavong

IPC分类号： H04L27/00 ,  H04B1/16 ,  H04B1/06 ,  H04B7/00

CPC分类号： H04L27/00 ,  H04W4/18 ,  H04W56/00 ,  H04W88/06

摘要： A baseband process operating on a receiver in a communication system, such as an 802.15.4 communication system, is provided. The baseband process has a set of predefined reference signals, with each reference signal associated with a possible characteristic in the baseband signal. The baseband process receives a degraded baseband signal, and preprocesses the baseband signal to reduce or remove the effects of the degradation. The preprocessed baseband signal is correlated with reference signals from the set of predefined reference signals, and the reference signal with the best correlation is identified. By identifying the best correlating reference signal, the baseband process is able to identify a characteristic of the baseband signal. In one example of the baseband process, the baseband signal is preprocessed by auto-correlating the degraded baseband signal with a delayed version of the degraded baseband signal. The preprocessed baseband signal is then correlated against a set of sync reference signals to find a sync offset for the baseband signal. When synchronized with the baseband signal, the baseband process may be correlated against a set of symbol reference signals to decode sequential symbols in the baseband signal.

摘要翻译： 提供了在诸如802.15.4通信系统的通信系统中的接收机上操作的基带处理。 基带处理具有一组预定义的参考信号，每个参考信号与基带信号中的可能特性相关联。 基带处理接收降级的基带信号，并预处理基带信号以减少或消除降级的影响。 预处理的基带信号与来自预定参考信号的参考信号相关，并且识别具有最佳相关性的参考信号。 通过识别最佳相关参考信号，基带处理能够识别基带信号的特性。 在基带处理的一个示例中，通过将劣化的基带信号与降级的基带信号的延迟版本自相关来对基带信号进行预处理。 然后将预处理的基带信号与一组同步参考信号相关，以找到基带信号的同步偏移。 当与基带信号同步时，基带处理可以与一组符号参考信号相关，以对基带信号中的顺序符号进行解码。

公开(公告)号：US5426637A

公开(公告)日：1995-06-20

申请号：US992857

申请日：1992-12-14

申请人： Jeffrey H. Derby ,  Willibald A. Doeringer ,  Harold D. Dykeman ,  Liang Li ,  Haldon J. Sandick ,  Ken V. Vu

发明人： Jeffrey H. Derby ,  Willibald A. Doeringer ,  Harold D. Dykeman ,  Liang Li ,  Haldon J. Sandick ,  Ken V. Vu

IPC分类号： H04L12/46 ,  H04L12/66

CPC分类号： H04L12/66 ,  H04L12/4604 ,  H04L45/742

摘要： A system for interconnecting widely separated local area networks (LANs) by means of a wide area network (WAN) utilizes network level facilities to establish a connection through the wide area network and to create connection table entries at the WAN access point which allow subsequent data frames to be transmitted through the wide area network without such network level operations. More particularly, the various LANs are combined into search groups, represented by address prefixes, to which LAN-initiated connection requests can be broadcast and which can respond so as to establish the data path connections. This system has the connection flexibility of a prior art router and, at the same time, the low overhead of a prior art bridge.

摘要翻译： 通过广域网（WAN）互连广泛分离的局域网（LAN）的系统利用网络级设施通过广域网建立连接，并在WAN接入点创建连接表条目，允许后续数据 通过广域网传输帧，无需进行网络级操作。 更具体地，各种LAN被组合成由地址前缀表示的搜索组，LAN发起的连接请求可以被广播并且哪些可以响应以便建立数据路径连接。 该系统具有现有技术的路由器的连接灵活性，同时具有现有技术的桥接器的低开销。