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    • 21. 发明授权
    • PHY sub-channel processing
    • PHY子通道处理
    • US08254475B2
    • 2012-08-28
    • US12344909
    • 2008-12-29
    • Steven JaffeStephen Edward Krafft
    • Steven JaffeStephen Edward Krafft
    • H04L27/28
    • H04L1/0072H04L1/0041H04L2001/0097
    • Physical layer (PHY) sub-channel processing. A soft symbol decision stream is arranged into a number of sub-channels to reduce substantially the processing performed within a communication receiver on data that is not intended for that communication receiver. In other embodiments, a predetermined approach is employed to arrange the soft symbol decision stream into one or more frames; each frame may have one or more soft symbol blocks; and each soft symbol block may have one or more symbols. Each of the soft symbol blocks, within a frame, may be assigned to a sub-channel. Only the soft symbol blocks that contain information destined for the communication receiver need be decoded. Only the sub-channel that includes these soft symbol blocks, destined for this communication receiver, need be decoded. The soft symbol blocks not within the sub-channel may be discarded thereby recovering some of the processing capabilities of the communication receiver.
    • 物理层(PHY)子通道处理。 软符号决策流被布置成多个子信道,以基本上减少在通信接收机内对不是针对该通信接收机的数据执行的处理。 在其他实施例中,采用预定方法将软符号决策流布置成一个或多个帧; 每个帧可以具有一个或多个软符号块; 并且每个软符号块可以具有一个或多个符号。 帧中的每个软符号块可以被分配给子信道。 只需要包含指定给通信接收器的信息的软符号块被解码。 只需要包含去往该通信接收机的这些软符号块的子信道被解码。 不在子信道内的软符号块可能被丢弃,从而恢复通信接收机的一些处理能力。
    • 23. 发明申请
    • Communications signal transcoder
    • 通信信号转码器
    • US20100267330A1
    • 2010-10-21
    • US12825893
    • 2010-06-29
    • Alan Y. KwentusCharles Alan BrooksSteven JaffeStephen Edward Krafft
    • Alan Y. KwentusCharles Alan BrooksSteven JaffeStephen Edward Krafft
    • H04H20/74
    • H04N21/2383H04N21/4382
    • Communications signal transcoder. A solution is provided to transcode a signal from a first signal type to a second signal type to ensure proper interfacing between devices that may operate using different signal types. For example, within a communication system, a first signal type (having a first modulation type, e.g., 8 PSK) may be received. The transcoder then ensures that this signal, after it has undergone any initial processing (such as tuning, down-converting, decoding, and so on), is encoded into a second signal type (having a second modulation type, e.g., QPSK) such that it can interface properly with a device for which the received signal is intended. This transcoder functionality may be implemented within discrete components, or it may alternatively be integrated within a functional block of an integrated circuit. This functionality may be implemented in a variety of communication systems including satellite, cable television, Internet, and others.
    • 通信信号转码器。 提供了将信号从第一信号类型转换为第二信号类型的解决方案,以确保可以使用不同信号类型操作的设备之间的适当接口。 例如,在通信系统中,可以接收第一信号类型(具有第一调制类型,例如8PSK)。 代码转换器然后确保该信号经过任何初始处理(诸如调谐,下变换,解码等等)之后被编码为第二信号类型(具有第二调制类型,例如QPSK),例如 它可以与接收到的信号的设备正确连接。 该代码转换器功能可以在分立组件内实现,或者可选地集成在集成电路的功能块内。 该功能可以在包括卫星,有线电视,因特网等的各种通信系统中实现。
    • 24. 发明申请
    • PHY sub-channel processing
    • PHY子通道处理
    • US20100002809A1
    • 2010-01-07
    • US12344909
    • 2008-12-29
    • Steven JaffeStephen Edward Krafft
    • Steven JaffeStephen Edward Krafft
    • H04L27/06H03D1/24H04L27/22
    • H04L1/0072H04L1/0041H04L2001/0097
    • Physical layer (PHY) sub-channel processing. A soft symbol decision stream is arranged into a number of sub-channels to reduce substantially the processing performed within a communication receiver on data that is not intended for that communication receiver. In other embodiments, a predetermined approach is employed to arrange the soft symbol decision stream into one or more frames; each frame may have one or more soft symbol blocks; and each soft symbol block may have one or more symbols. Each of the soft symbol blocks, within a frame, may be assigned to a sub-channel. Only the soft symbol blocks that contain information destined for the communication receiver need be decoded. Only the sub-channel that includes these soft symbol blocks, destined for this communication receiver, need be decoded. The soft symbol blocks not within the sub-channel may be discarded thereby recovering some of the processing capabilities of the communication receiver.
    • 物理层(PHY)子通道处理。 软符号决策流被布置成多个子信道,以基本上减少在通信接收机内对不是针对该通信接收机的数据执行的处理。 在其他实施例中,采用预定方法将软符号决策流布置成一个或多个帧; 每个帧可以具有一个或多个软符号块; 并且每个软符号块可以具有一个或多个符号。 帧中的每个软符号块可以被分配给子信道。 只需要包含指定给通信接收器的信息的软符号块被解码。 只需要包含去往该通信接收机的这些软符号块的子信道被解码。 不在子信道内的软符号块可能被丢弃,从而恢复通信接收机的一些处理能力。
    • 26. 发明授权
    • PHY sub-channel processing
    • PHY子通道处理
    • US07266155B2
    • 2007-09-04
    • US10420089
    • 2003-04-22
    • Steven JaffeStephen Edward Krafft
    • Steven JaffeStephen Edward Krafft
    • H04K1/10
    • H04L1/0072H04L1/0041H04L2001/0097
    • Physical layer (PHY) sub-channel processing. A soft symbol decision stream is arranged into a number of sub-channels to reduce substantially the processing performed within a communication receiver on data that is not intended for that communication receiver. In other embodiments, a predetermined approach is employed to arrange the soft symbol decision stream into one or more frames; each frame may have one or more soft symbol blocks; and each soft symbol block may have one or more symbols. Each of the soft symbol blocks, within a frame, may be assigned to a sub-channel. Only the soft symbol blocks that contain information destined for the communication receiver need be decoded. Only the sub-channel that includes these soft symbol blocks, destined for this communication receiver, need be decoded. The soft symbol blocks not within the sub-channel may be discarded thereby recovering some of the processing capabilities of the communication receiver.
    • 物理层(PHY)子通道处理。 软符号决策流被布置成多个子信道,以基本上减少在通信接收机内对不是针对该通信接收机的数据执行的处理。 在其他实施例中,采用预定方法将软符号决策流布置成一个或多个帧; 每个帧可以具有一个或多个软符号块; 并且每个软符号块可以具有一个或多个符号。 帧中的每个软符号块可以被分配给子信道。 只需要包含指定给通信接收器的信息的软符号块被解码。 只需要包含去往该通信接收机的这些软符号块的子信道被解码。 不在子信道内的软符号块可能被丢弃,从而恢复通信接收机的一些处理能力。
    • 27. 发明申请
    • Quadrature receiver sampling architecture
    • 正交接收机采样架构
    • US20070053468A1
    • 2007-03-08
    • US11593273
    • 2006-11-06
    • Tommy YuSteven JaffeStephen Krafft
    • Tommy YuSteven JaffeStephen Krafft
    • H04L27/22
    • H04L27/00
    • Quadrature receiver sampling architecture. A signal ADC performs analog to digital conversion for both I and Q streams. An analog MUX selects the appropriate I and the Q baseband analog input streams for input to the ADC at the appropriate time. A digital filter may also be employed to compensate for any introduced delay between the samples of the I and Q channel when seeking to recover the symbols that have been transmitted to a communication receiver that employs this quadrature receiver architecture and/or signal processing. In one embodiment, if an ADC is clocked at a rate of substantially twice the sample rate of the I and Q channels, there will be a one-half sample clock delay between the digital I and digital Q data at the output of the ADC. This delay is then removed before the demodulator processes the input signals to recover the transmitted symbols.
    • 正交接收机采样架构。 信号ADC为I和Q流执行模数转换。 模拟MUX在适当的时间选择适当的I和Q基带模拟输入流输入ADC。 还可以采用数字滤波器来补偿在I和Q信道的样本之间的任何引入的延迟,当寻求恢复已被发送到使用该正交接收器架构和/或信号处理的通信接收机的符号时。 在一个实施例中,如果ADC以基本上是I和Q通道的采样率的两倍的速率被计时,则在ADC的输出处的数字I和数字Q数据之间将存在二分之一采样时钟延迟。 然后在解调器处理输入信号之前去除该延迟以恢复发送的符号。
    • 28. 发明申请
    • Interspersed training among data
    • 数据间穿插训练
    • US20060250285A1
    • 2006-11-09
    • US11480803
    • 2006-07-03
    • Steven JaffeKelly Cameron
    • Steven JaffeKelly Cameron
    • H03M7/00
    • H04L1/0057H03M13/1515H03M13/2966H04B7/18589H04L1/0041H04L1/0045H04L1/0052H04L1/006H04L1/0065H04L1/0066H04L1/0071H04L1/0083H04L25/0226H04L27/0014H04L2027/0028H04L2027/0034H04L2027/0036
    • 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.
    • 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。
    • 29. 发明授权
    • Constellation-multiplexed transmitter and receiver
    • 星座多路复用发射机和接收机
    • US06553063B1
    • 2003-04-22
    • US09430466
    • 1999-10-29
    • Thuji Simon LinSteven JaffeRobindra Joshi
    • Thuji Simon LinSteven JaffeRobindra Joshi
    • H04L516
    • H04L25/03178H04L1/0003H04L25/03184H04L27/34
    • A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of k or k+1 data bits is grouped into bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.
    • 使用紧凑代码集或部分响应解码接收器的信息的动态通信装置平均允许每个符号传输的非整数比特。 将k或k + 1个数据比特流分组成比特向量,然后映射到形成传输符号的相应的信号星座上。 可以对两个或更多个符号进行分组和进一步编码,使得符号分布在所传送的两个或更多个符号之间。 使用例如最大似然技术的序列估计,通过相对于接收信号的噪声估计来通知。 在接收机处计算所考虑的序列的路径度量的每个分支度量被噪声功率的倒数加权。 期望连续动态地执行星座选择,序列估计和噪声估计。