公开(公告)号：US06697975B2

公开(公告)日：2004-02-24

申请号：US10325525

申请日：2002-12-19

申请人： Kelly Cameron

发明人： Kelly Cameron

IPC分类号： G11C2900

CPC分类号： H03M13/2782 ,  H03M13/00 ,  H03M13/2732 ,  H03M13/276 ,  H03M13/2789

摘要： A memory-efficient convolutional interleaver/deinterleaver with a memory array, a write commutator, and a read commutator wherein the commutators perform their respective write and read operations relative to a preselected memory cell after a predetermined delay. The delay is chosen using a modulo-based technique, such that an efficient implementation of a Ramsey Type-II interleaver is realized.

公开(公告)号：US5099482A

公开(公告)日：1992-03-24

申请号：US400447

申请日：1989-08-30

申请人： Kelly Cameron

发明人： Kelly Cameron

IPC分类号： H03M13/15

CPC分类号： H03M13/15

摘要： A Reed-Solomon Galois Field Euclid algorithm decoder determines whether an error is uncorrectable by checking for:I. deg [.LAMBDA.(x))].ltoreq.tII. deg [.OMEGA.(x)]

摘要翻译： Reed-Solomon Galois Field Euclid算法解码器通过检查以下方式确定误差是否不可校正：I. deg [LAMBDA（x））]

公开(公告)号：US08483122B2

公开(公告)日：2013-07-09

申请号：US12409461

申请日：2009-03-23

申请人： Mark Dale ,  Hebsgaard Anders ,  David Hartman ,  Alan Kwentus ,  Steven Jaffe ,  Kelly Cameron ,  Stephen Krafft ,  Alan Gin ,  Jen-chieh (Jack) Chien ,  Dorothy Lin ,  Rocco Brescia ,  Joyce Wang

发明人： Mark Dale ,  Hebsgaard Anders ,  David Hartman ,  Alan Kwentus ,  Steven Jaffe ,  Kelly Cameron ,  Stephen Krafft ,  Alan Gin ,  Jen-chieh (Jack) Chien ,  Dorothy Lin ,  Rocco Brescia ,  Joyce Wang

IPC分类号： H04B7/212

CPC分类号： H04L47/29 ,  H04B7/18582 ,  H04L12/2801 ,  H04L47/10 ,  H04L47/263 ,  H04N21/2383 ,  H04N21/2385 ,  H04N21/4382 ,  H04N21/44209 ,  H04N21/6143 ,  H04N21/6193 ,  H04N21/6377 ,  H04N2007/17381

摘要： In a DOCSIS based satellite gateway data is transmitted over a single downstream channel, at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. To accomplish this, the downstream DOCSIS MAC data is parsed to extract DOCSIS packets. The DOCSIS packets are then loaded into packet queues based on an identifier within such packets such as the MAC destination address or SID. Each of the queues represents a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers based on the current signal quality being experienced at the subscriber location. A PHY-MAP describing the downstream data structure to be transmitted and inserted into the downstream data. Data is extracted from the packet queues in queue blocks as defined by the PHY-MAP. The queue blocks are modulated with transmission parameters appropriate for each queue block and transmitted to the DOCSIS based satellite modems. The satellite modems extract the PHY-MAP from the downstream data and use the information contained in it to demodulate and decode the queue for which they have sufficient downstream signal quality. Satellite modems measure and transmit downstream signal quality to the satellite gateway to be used to assigned traffic to the appropriate queues.

公开(公告)号：US20060271966A1

公开(公告)日：2006-11-30

申请号：US11284098

申请日：2005-11-21

申请人： Frederik Staal ,  Robert Hawley ,  Kelly Cameron

发明人： Frederik Staal ,  Robert Hawley ,  Kelly Cameron

IPC分类号： H04N7/20 ,  H04N7/18

CPC分类号： H04N21/23608 ,  H04L1/0045 ,  H04L1/0082 ,  H04L27/34 ,  H04L2001/0097 ,  H04N7/106 ,  H04N7/20 ,  H04N21/238 ,  H04N21/2383 ,  H04N21/4305 ,  H04N21/4382 ,  H04N21/6143

摘要： Digital packets, defined by a sync byte and then 130 MPEG2 compressed QPSK signal bytes, from a satellite transponder are reformatted prior to transmission to television receivers in apartments in a building wired to distribute video signals. A side byte between such sync and signal bytes in each packet indicates (a) any QPSK packet uncorrectable error and (b) processing information which allows automatic reconfiguration at the settop box. Additional FEC bytes correct to 8 errors within a MPEG2QPSK packet. The system removes the FEC bytes and reframes the MPEG2QPSK packets into a superpacket by converting a first number of the MPEG2QPSK packets to a second number of MPEG2QAM packets. An added sync byte indicates the beginning of each such MPEG2QAM packet. The system adds side data bytes including any uncorrectable errors in each MPEG2QPSK packet and adds a new, less complicated FEC to each MPEG2QAM packet. The system modulates and upconverts the bytes in each MPEG2QAM packet and passes them through a cable plant constructed to receive modulated QAM bytes (or NTSC signals) which are demodulated at the settop box. The additional FEC bytes correct to 8 errors within a MPEG2QAM packet and are then removed. The superpacket is deframed to obtain the MPEG2QPSK packets. After finding a television channel, the side bytes are processed to determine the frequency location of the other channels in the apartment receivers and the existence of uncorrectable errors. The MPEG2QAM bytes are decompressed and encoded to reproduce the television images in the apartment receivers.

摘要翻译： 来自卫星转发器的同步字节和130个MPEG2压缩的QPSK信号字节定义的数字分组在传输到有线分配视频信号的建筑物的公寓中的电视接收机之前被重新格式化。 每个分组中的同步信号字节之间的边字节表示（a）任何QPSK分组不可校正错误和（b）允许在机顶盒自动重新配置的处理信息。 附加的FEC字节校正为MPEG2QPSK 分组内的8个错误​​。 该系统通过将第一数量的MPEG2 QPSK分组转换为第二数量的MPEG2 QAMAM分组来去除FEC字节并将MPEG2 QPSK分组重构为超分组， / SUB>数据包。 添加的同步字节表示每个这样的MPEG2 QAM 分组的开始。 该系统在每个MPEG2QPSK分组中添加包括任何不可校正错误的边数据字节，并且向每个MPEG2 QAM 分组添加新的较不复杂的FEC。 系统对每个MPEG2 QAM分组中的字节进行调制和上变频，并将它们通过构造成接收在机顶盒解调的调制QAM字节（或NTSC信号）的电缆设备。 附加FEC字节校正到MPEG2QAM 分组内的8个错误​​，然后被去除。 超级分组被去帧以获得MPEG2 QPSK 分组。 找到电视频道后，处理边字节以确定公寓接收机中其他频道的频率位置以及不可校正错误的存在。 对MPEG2QAM字节进行解压缩和编码以再现公寓接收机中的电视图像。

公开(公告)号：US07024597B2

公开(公告)日：2006-04-04

申请号：US10784114

申请日：2004-02-20

申请人： Kelly Cameron

发明人： Kelly Cameron

IPC分类号： G11C29/00 ,  H03M13/03

CPC分类号： H03M13/2782 ,  H03M13/00 ,  H03M13/2732 ,  H03M13/276 ,  H03M13/2789

摘要： A memory-efficient convolutional interleaver/deinterleaver with a memory array, a write commutator, and a read commutator wherein the commutators perform their respective write and read operations relative to a preselected memory cell after a predetermined delay. The delay is chosen using a modulo-based technique, such that an efficient implementation of a Ramsey Type-II interleaver is realized.

公开(公告)号：US06539516B2

公开(公告)日：2003-03-25

申请号：US09951998

申请日：2001-09-12

申请人： Kelly Cameron

发明人： Kelly Cameron

IPC分类号： H03M1300

CPC分类号： H03M13/153 ,  H03M13/1525 ,  H03M13/3746

摘要： A method for decoding an algebraic-coded message including determining a discrepancy indicator; determining an error locator polynomial according to a modified Berlekamp-Massey algorithm such that an uncorrectable message is detected; and producing a perceptible indication of the detected uncorrectable message. An apparatus includes storage devices, arithmetic components, and an uncorrectable message detector.

摘要翻译： 一种用于解码代数编码消息的方法，包括确定差异指示符; 根据修改的Berlekamp-Massey算法确定误差定位器多项式，使得检测到不可校正的消息; 并产生检测到的不可校正消息的可察觉指示。 一种装置包括存储装置，算术组件和不可校正消息检测器。

公开(公告)号：US5170399A

公开(公告)日：1992-12-08

申请号：US400739

申请日：1989-08-30

申请人： Kelly Cameron ,  Patrick A. Owsley

发明人： Kelly Cameron ,  Patrick A. Owsley

IPC分类号： H03M13/15

CPC分类号： H03M13/6516 ,  H03M13/1535

摘要： A Reed-Solomon Galois Field Euclid algorithm error correction decoder solves Euclid's algorithm with a Euclid stack which can be configured to function as a Euclid divide or a Euclid multiply module. The decorder is able to resolve twice the erasure errors by selecting .GAMMA.(x) and T(x) as the initial conditions for .LAMBDA..sup.(0) (x) and .OMEGA..sup.(0) (x), respectively.

摘要翻译： 里德 - 所罗门伽罗瓦域欧几里得算法纠错解码器使用欧几里德堆栈解决欧几里德算法，该算法可以被配置为用作欧几里德分割或欧几里德乘法模块。 通过选择GAMMA（x）和T（x）分别作为LAMBDA（0）（x）和OMEGA（0）（x））的初始条件，解码顺序能够解决擦除错误的两倍。

公开(公告)号：US20060250285A1

公开(公告)日：2006-11-09

申请号：US11480803

申请日：2006-07-03

申请人： Steven Jaffe ,  Kelly Cameron

发明人： Steven Jaffe ,  Kelly Cameron

IPC分类号： H03M7/00

CPC分类号： H04L1/0057 ,  H03M13/1515 ,  H03M13/2966 ,  H04B7/18589 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0052 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0071 ,  H04L1/0083 ,  H04L25/0226 ,  H04L27/0014 ,  H04L2027/0028 ,  H04L2027/0034 ,  H04L2027/0036

摘要： A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may be achieved after determining carrier offset in receivers by correlating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 在确定接收机中的载波偏移之后可以通过将连续的标题中的连续符号相关来来实现对信号的相位锁定。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20050235193A1

公开(公告)日：2005-10-20

申请号：US11150358

申请日：2005-06-10

申请人： Kelly Cameron

发明人： Kelly Cameron

IPC分类号： H03M13/03 ,  H03M13/25

CPC分类号： H03M13/6538 ,  H03M13/235 ,  H03M13/256 ,  H03M13/3961 ,  H03M13/41

摘要： A method for decoding a word received at a current time instant into a symbol of a trellis code. The trellis code corresponds to a trellis diagram having N states associated with the current time instant. Each of the N states corresponds to at least one incoming branch. Each of the incoming branches is associated with a symbol of the trellis code. The branch metrics are computed for the incoming branches such that a branch metric represents a distance between the received word and a symbol associated with the corresponding branch. The branch metric is represented by fewer bits than a squared Euclidian metric representation of the distance. For each of the N states, a node metric is computed based on corresponding branch metrics and one of the incoming branches associated with the state is selected. One of the N states is selected as an optimal state based on the node metrics. The symbol associated with the selected incoming branch corresponding to the optimal state is the decoded word.

摘要翻译： 一种用于将在当前时刻接收到的字解码成格状码的符号的方法。 网格码对应于具有与当前时刻相关联的N个状态的网格图。 N个状态中的每一个对应于至少一个进入分支。 每个进入的分支与格状码的符号相关联。 为进入的分支计算分支度量，使得分支度量表示所接收的单词与与相应分支相关联的符号之间的距离。 分支度量由距离的平方欧几里得度量表示的比特数来表示。 对于N个状态中的每一个，基于相应的分支度量计算节点度量，并且选择与状态相关联的一个进入分支。 根据节点度量，将N个状态中的一个选为最优状态。 与对应于最佳状态的所选输入分支相关联的符号是解码字。

公开(公告)号：US06546520B1

公开(公告)日：2003-04-08

申请号：US09430456

申请日：1999-10-29

申请人： Kelly Cameron

发明人： Kelly Cameron

IPC分类号： H03M1303

CPC分类号： H03M13/2782 ,  H03M13/00 ,  H03M13/2732 ,  H03M13/276 ,  H03M13/2789

摘要： A memory-efficient convolutional interleaver/deinterleaver with a memory array, a write commutator, and a read commutator wherein the commutators perform their respective write and read operations relative to a preselected memory cell after a predetermined delay. The delay is chosen using a modulo-based technique, such that an efficient implementation: of a Ramsey Type-II interleaver is realized.

摘要翻译： 具有存储器阵列的存储器高效卷积交织器/解交织器，写入换向器和读取换向器，其中换向器在预定延迟之后相对于预先选择的存储器单元执行它们各自的写入和读取操作。 使用基于模的技术来选择延迟，使得实现了Ramsey Type-II交织器的有效实现。