公开(公告)号：US08498368B1

公开(公告)日：2013-07-30

申请号：US10367049

申请日：2003-02-14

申请人： Paul J. Husted ,  William J. McFarland ,  Teresa H. Meng ,  John S. Thomson

发明人： Paul J. Husted ,  William J. McFarland ,  Teresa H. Meng ,  John S. Thomson

IPC分类号： H04L27/08

CPC分类号： H03G3/3052 ,  H03G3/3073 ,  H03G3/3078 ,  H04L1/0003 ,  H04L1/0046 ,  H04L1/0054 ,  H04L23/00 ,  H04L27/0012 ,  H04L27/2605 ,  H04L27/2647

摘要： In some wireless local area networks (WLANs), signals of different modulation types and rates can be received. To operate optimally, the gain of an amplifier in a receiver can be set based on a specific modulation type and rate. For example, the gain of a receive path amplifier can be changed based on one or more unique identifying characteristics in a received data packet. Once the unique identifying characteristics are located, they can be analyzed to determine which modulation type and rate are represented. The appropriate gain of the amplifier can be set based on the modulation type and rate. Advantageously, subsequent data symbols can be amplified with the set gain, thereby ensuring that the receiver optimally receives those data symbols.

摘要翻译： 在一些无线局域网（WLAN）中，可以接收不同调制类型和速率的信号。 为了最佳地操作，可以基于特定的调制类型和速率来设置接收机中的放大器的增益。 例如，接收路径放大器的增益可以基于接收的数据分组中的一个或多个唯一的识别特征来改变。 一旦找到了唯一的识别特征，就可以对它们进行分析，以确定哪种调制类型和速率被表示。 可以根据调制类型和速率设置放大器的适当增益。 有利地，随后的数据符号可以用设定的增益进行放大，从而确保接收机最佳地接收那些数据符号。

公开(公告)号：US07636400B2

公开(公告)日：2009-12-22

申请号：US11621940

申请日：2007-01-10

申请人： John S. Thomson ,  Paul J. Husted ,  Ardavan Maleki Tehrani ,  Jeffrey M. Gilbert ,  William J. McFarland ,  Lars E. Thon ,  Yi-Hsiu Wang

发明人： John S. Thomson ,  Paul J. Husted ,  Ardavan Maleki Tehrani ,  Jeffrey M. Gilbert ,  William J. McFarland ,  Lars E. Thon ,  Yi-Hsiu Wang

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/067 ,  H03M13/25 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6325 ,  H03M13/6362 ,  H04K3/228 ,  H04L1/005 ,  H04L1/0054 ,  H04L27/38

摘要： A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between god and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.

公开(公告)号：US06650334B1

公开(公告)日：2003-11-18

申请号：US09245531

申请日：1999-02-05

申请人： John S. Thomson ,  William N. Ng

发明人： John S. Thomson ,  William N. Ng

IPC分类号： G09G500

CPC分类号： G06T15/04 ,  G06T2200/28

摘要： A circuit for texture tag checking includes a first comparison gate which compares a first dimension field of a tag with a first dimension element for a group of texels associated with a sample point. A second comparison gate compares a second dimension field of the tag with a second dimension element for the group of texels. A logic gate, coupled to each of the first and second comparison gates, is associated with one texel of the group of texels. The logic gate outputs a predetermined signal if the first and second dimension fields of the tag are the same as the first and second dimension elements, respectively.

摘要翻译： 用于纹理标签检查的电路包括第一比较门，其将标签的第一维度字段与用于与采样点相关联的一组纹素的第一维度元素进行比较。 第二比较门将标签的第二维度字段与纹理组的第二维度元素进行比较。 耦合到第一和第二比较门中的每一个的逻辑门与一组纹素的一个纹理相关联。 如果标签的第一和第二维度字段分别与第一和第二维度元素相同，则逻辑门输出预定信号。

公开(公告)号：US07076468B2

公开(公告)日：2006-07-11

申请号：US09844475

申请日：2001-04-27

申请人： James C. Hillegass ,  Yaobing Deng ,  Mark Eastom ,  Richard R. Fritz ,  John C. Gateley ,  James A. Grinsfelder ,  Stephen A. Grove ,  Eric Steven Hockett ,  Nikolay G. Sokratov ,  James G. Swanson ,  John S. Thomson ,  Boris Mamedov ,  James A. Nordgaard ,  Paul E. Onnen

发明人： James C. Hillegass ,  Yaobing Deng ,  Mark Eastom ,  Richard R. Fritz ,  John C. Gateley ,  James A. Grinsfelder ,  Stephen A. Grove ,  Eric Steven Hockett ,  Nikolay G. Sokratov ,  James G. Swanson ,  John S. Thomson ,  Boris Mamedov ,  James A. Nordgaard ,  Paul E. Onnen

IPC分类号： G06F17/60

CPC分类号： G06Q10/10 ,  G06F21/10 ,  G06F21/105 ,  G06Q20/06 ,  G06Q20/1235

摘要： A method and system is presented for a digital licensing scheme that separates the license from the digital file containing the copyrightable material. According to the present invention, the files can be downloaded from any server, and transferred from user to user, even after the file has been licensed. The present invention utilizes producer software running on a vendor's computer, server software running on a computer provided by the license provider, and player software operating on the user's computer. Digitally encrypted communication streams keep communications between the producer software, the license provider, and the player software confidential. A software component running on the user's computer checks to make sure that the appropriate product license has been purchased. This is accomplished by comparing the product ID in the product license with the product ID contained in the product file. The software also checks that the person seeking to play the product file is the user that actually paid for the license. This is accomplished by comparing the user ID in the product license with a user ID in a user license. Finally, an operating system ID found in the user license is compared with the same information obtained from the currently running operating system, to ensure that the user license was created for the currently operating computer.

公开(公告)号：US06507619B1

公开(公告)日：2003-01-14

申请号：US09535902

申请日：2000-03-24

申请人： John S. Thomson ,  Paul J. Husted

发明人： John S. Thomson ,  Paul J. Husted

IPC分类号： H03D100

CPC分类号： H03M13/6325 ,  H03M13/25 ,  H03M13/2707 ,  H03M13/4169 ,  H03M13/6502 ,  H04L1/0054 ,  H04L27/38

摘要： A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. This results in performance superior to pure hard decision decoding and approaches that of soft decision decoding; moreover, it is applicable in many situations where soft decision decoding cannot be used.

摘要翻译： 维特比解码系统将接收的QAM星座中的比特解释为多值参数，而不是二进制值参数。 它使用这些多值参数来执行维特比算法，以提供优于硬判决解码的结果。 系统使用非阶梯线性或弯曲传递函数来向位指定值，而不是将硬0-1函数应用于QAM数据。 这导致性能优于纯硬判决解码和软判决解码的方法; 此外，它适用于许多软判决解码不能使用的情况。

公开(公告)号：US06501474B1

公开(公告)日：2002-12-31

申请号：US09451191

申请日：1999-11-29

申请人： John S. Thomson ,  James T. Battle

发明人： John S. Thomson ,  James T. Battle

IPC分类号： G06T1120

CPC分类号： G06T15/80

摘要： A graphics processing system includes an initial processing system that receives a command to render an image component polygon and generates parameters for calculating image values for the image component polygon. The graphics processing system also includes a backtrack register capable of storing a pixel location. A rasterization engine scans a pixel span in a selected direction and determines whether the pixel span is to be scanned in a direction opposite the selected direction. The rasterization engine stores a backtrack location in the backtrack register in response to a determination that the pixel span is to be scanned in a direction opposite the selected direction, and stores a location to begin scanning a subsequent pixel span in the backtrack register in response to a determination that a backtrack location is not stored in the backtrack register. The rasterization engine also calculates image values for each pixel in the pixel span in the current scan direction. A pixel data processing system receives the image values from the rasterization engine and stores the image values in a frame buffer for display. The graphics processing system has increased image rendering speed without a corresponding increase in the number of logic gates or the amount of chip area required for the rasterization engine.

摘要翻译： 图形处理系统包括初始处理系统，其接收用于渲染图像分量多边形的命令，并且生成用于计算图像分量多边形的图像值的参数。 图形处理系统还包括能够存储像素位置的回溯寄存器。 光栅化引擎沿所选方向扫描像素跨度，并确定要沿与所选方向相反的方向扫描像素跨度。 响应于确定要沿与所选择的方向相反的方向扫描像素跨度，光栅化引擎将回溯位置存储在回溯寄存器中，并且响应于存储位置开始扫描回溯寄存器中的后续像素跨度 确定回溯位置未存储在回溯寄存器中。 光栅化引擎还计算当前扫描方向上像素跨度中每个像素的图像值。 像素数据处理系统从光栅化引擎接收图像值，并将图像值存储在用于显示的帧缓冲器中。 图形处理系统具有增加的图像渲染速度，而不会相应地增加逻辑门的数量或光栅化引擎所需的芯片面积的数量。

公开(公告)号：US07447163B1

公开(公告)日：2008-11-04

申请号：US10254181

申请日：2002-09-24

申请人： John S. Thomson ,  William J. McFarland

发明人： John S. Thomson ,  William J. McFarland

IPC分类号： H04J1/16

CPC分类号： H04L25/022 ,  H04L5/005 ,  H04L25/0224 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2662 ,  H04L27/2695

摘要： A radio communication device is tested by forwarding relevant signal characteristic data derived at the physical (PHY) layer to the media access control (MAC) layer for processing, analysis and feedback to the radio circuit to improve performance. The relevant signal characteristics are forwarded to the MAC within (appended to) a data packet. Thus, the relevant signal characteristic is forwarded to the MAC along an existing data path (a path originally designed to transfer the receive frame only, but now transfers the combined receive frame with the attached radio characteristic). The radio characteristic may be used for testing and/or tuning the radio circuit. In one embodiment, the radio characteristic is a frequency domain representation of a received signal. The radio is tuned based on a channel estimate derived from comparison of frequency domain representations of transmitted and received signals.

摘要翻译： 通过将在物理（PHY）层导出的相关信号特征数据转发到媒体访问控制（MAC）层来进行无线电通信设备的测试，以对无线电电路进行处理，分析和反馈以提高性能。 相关信号特性被转发到数据包（附加到）内的MAC。 因此，相关信号特性沿着现有数据路径（最初设计用于传送接收帧的路径，但是现在传输具有附加的无线电特征的组合的接收帧）被转发到MAC。 无线电特性可用于测试和/或调谐无线电电路。 在一个实施例中，无线电特性是接收信号的频域表示。 基于从发送和接收信号的频域表示的比较导出的信道估计来调谐无线电。

公开(公告)号：US07924932B2

公开(公告)日：2011-04-12

申请号：US12615024

申请日：2009-11-09

申请人： John S. Thomson ,  Paul J. Husted ,  Ardavan Maleki Tehrani ,  Jeffrey M. Gilbert ,  William J. McFarland ,  Lars E. Thon ,  Yi-Hsiu Wang

发明人： John S. Thomson ,  Paul J. Husted ,  Ardavan Maleki Tehrani ,  Jeffrey M. Gilbert ,  William J. McFarland ,  Lars E. Thon ,  Yi-Hsiu Wang

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/067 ,  H03M13/25 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6325 ,  H03M13/6362 ,  H04K3/228 ,  H04L1/005 ,  H04L1/0054 ,  H04L27/38

摘要： A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between good and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.

摘要翻译： 维特比解码系统将接收的QAM星座中的比特解释为多值参数，而不是二进制值参数。 它使用这些多值参数来执行维特比算法，以提供优于硬判决解码的结果。 系统使用非阶梯线性或弯曲传递函数来向位指定值，而不是将硬0-1函数应用于QAM数据。 在另一方面，一种系统基于其估计的可靠性来区分数据比特，更多地强调使用各种技术中的任何一种来解码可靠比特比不可靠比特。 通过区分好坏位和去强调或忽略不可靠位，系统可以显着减少不可纠正的错误和数据包丢失。

公开(公告)号：US20100098183A1

公开(公告)日：2010-04-22

申请号：US12615024

申请日：2009-11-09

申请人： John S. Thomson ,  Paul J. Husted ,  Ardavan M. Tehrani ,  Jeffrey M. Gilbert ,  William J. McFarland ,  Lars E. Thon ,  Yi-Hsiu Wang

发明人： John S. Thomson ,  Paul J. Husted ,  Ardavan M. Tehrani ,  Jeffrey M. Gilbert ,  William J. McFarland ,  Lars E. Thon ,  Yi-Hsiu Wang

IPC分类号： H04L5/12

CPC分类号： H04L25/067 ,  H03M13/25 ,  H03M13/3961 ,  H03M13/41 ,  H03M13/6325 ,  H03M13/6362 ,  H04K3/228 ,  H04L1/005 ,  H04L1/0054 ,  H04L27/38

摘要： A Viterbi decoding system interprets bits in received QAM constellations as many-valued parameters rather than binary valued parameters. It performs the Viterbi algorithm using these many-valued parameters to provide results superior to hard decision decoding. Rather than applying a hard 0-1 function to the QAM data, the system uses a non-stepped linear or curved transfer function to assign values to the bits. In another aspect, a system differentiates between data bits based on their estimated reliability, giving more emphasis to decoding reliable bits than unreliable bits using any of a variety of techniques. By differentiating between god and bad bits and de-emphasizing or ignoring unreliable bits, the system can provide a significant reduction in uncorrectable errors and packet loss.

摘要翻译： 维特比解码系统将接收的QAM星座中的比特解释为多值参数，而不是二进制值参数。 它使用这些多值参数来执行维特比算法，以提供优于硬判决解码的结果。 系统使用非阶梯线性或弯曲传递函数来向位指定值，而不是将硬0-1函数应用于QAM数据。 在另一方面，一种系统基于其估计的可靠性来区分数据比特，更多地强调使用各种技术中的任何一种来解码可靠比特比不可靠比特。 通过区分神和坏位，并且不强调或忽略不可靠比特，系统可以显着减少不可校正的错误和分组丢失。

公开(公告)号：US07385929B1

公开(公告)日：2008-06-10

申请号：US09963217

申请日：2001-09-25

申请人： William J. McFarland ,  John S. Thomson

发明人： William J. McFarland ,  John S. Thomson

IPC分类号： G08C15/00

CPC分类号： H04L1/0045 ,  H04L1/0063 ,  H04L1/242

摘要： Specific bits of an incoming transmission are compared against a predetermined bit pattern. If the selected bits do not match the predetermined bit pattern, then the incoming transmission is rejected as a false packet. The predetermined bit pattern can include legal values for predetermined bits in a plurality of fields. Notably, these legal values are set by a networking standard. A parity check may check may be performed in addition to checking for predetermined bits in other fields. A user interface can be used to determine the predetermined bit pattern.

摘要翻译： 将进入传输的特定比特与预定比特模式进行比较。 如果所选择的比特与预定的比特模式不匹配，那么输入的传输被拒绝为假包。 预定比特模式可以包括多个字段中的预定比特的合法值。 值得注意的是，这些合法价值观是由网络标准设定的。 除了检查其他领域中的预定比特之外，还可以执行奇偶校验。 可以使用用户界面来确定预定位模式。