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1. 发明授权

US07978795B2 Fast automatic gain control 有权
标题翻译：快速自动增益控制
公开(公告)号：US07978795B2
公开(公告)日：2011-07-12
申请号：US11945288
申请日：2007-11-27
申请人： Bruce Currivan , Loke Tan , Thomas Kolze
发明人： Bruce Currivan , Loke Tan , Thomas Kolze
IPC分类号： H04L27/08
CPC分类号： H04L27/22 , H04L25/03038 , H04L25/03057 , H04L25/061 , H04L2025/03401 , H04L2025/0342 , H04L2025/03687
摘要： An apparatus comprising a slicer configured to produce a symbol decision value and a symbol error value utilizing, at least in part, a slicer input signal; and an automatic gain controller configured to facilitate the automatic control of a gain applied to the slicer input signal by producing a gain control signal, the automatic gain controller comprising a decision-directed amplitude error detector configured to utilize, at least in part, the symbol decision value and the symbol error value to produce an amplitude error signal, and a loop filter configured to utilize the amplitude error signal to produce the gain control signal.
摘要翻译：一种包括限幅器的装置，其被配置为至少部分地利用限幅器输入信号产生符号判定值和符号误差值; 以及自动增益控制器，其被配置为通过产生增益控制信号来促进对施加到限幅器输入信号的增益的自动控制，所述自动增益控制器包括判决导向的幅度误差检测器，其被配置为至少部分地使用符号决定值和符号误差值，以产生振幅误差信号;以及环路滤波器，其被配置为利用所述振幅误差信号来产生所述增益控制信号。

2. 发明申请

US20090135896A1 FAST AUTOMATIC GAIN CONTROL 有权
标题翻译：快速自动增益控制
公开(公告)号：US20090135896A1
公开(公告)日：2009-05-28
申请号：US11945288
申请日：2007-11-27
申请人： Bruce Currivan , Loke Tan , Thomas Kolze
发明人： Bruce Currivan , Loke Tan , Thomas Kolze
IPC分类号： H04L27/08 , H03H7/30 , H03K5/159
CPC分类号： H04L27/22 , H04L25/03038 , H04L25/03057 , H04L25/061 , H04L2025/03401 , H04L2025/0342 , H04L2025/03687
摘要： An apparatus comprising a slicer configured to produce a symbol decision value and a symbol error value utilizing, at least in part, a slicer input signal; and an automatic gain controller configured to facilitate the automatic control of a gain applied to the slicer input signal by producing a gain control signal, the automatic gain controller comprising a decision-directed amplitude error detector configured to utilize, at least in part, the symbol decision value and the symbol error value to produce an amplitude error signal, and a loop filter configured to utilize the amplitude error signal to produce the gain control signal.
摘要翻译：一种包括限幅器的装置，其被配置为至少部分地利用限幅器输入信号产生符号判定值和符号误差值; 以及自动增益控制器，其被配置为通过产生增益控制信号来促进对施加到限幅器输入信号的增益的自动控制，所述自动增益控制器包括判决导向的幅度误差检测器，其被配置为至少部分地使用符号决定值和符号误差值，以产生振幅误差信号;以及环路滤波器，其被配置为利用所述振幅误差信号来产生所述增益控制信号。

3. 发明申请

US20130085703A1 Histogram-Based Linearization of Analog-to-Digital Converters 审中-公开
标题翻译：模数转换器的基于直方图的线性化
公开(公告)号：US20130085703A1
公开(公告)日：2013-04-04
申请号：US13249845
申请日：2011-09-30
申请人： Ray (Ramon) GOMEZ , Bruce J. Currivan , Lin He , Loke Tan , Frank Van der Goes , Cy (Chun-Ying) Chen , Jiangfeng Wu , Thomas Kolze
发明人： Ray (Ramon) GOMEZ , Bruce J. Currivan , Lin He , Loke Tan , Frank Van der Goes , Cy (Chun-Ying) Chen , Jiangfeng Wu , Thomas Kolze
IPC分类号： G06F17/17 , G06F19/00
CPC分类号： G06F17/17 , H03M1/1042 , H03M1/12
摘要： Embodiments provide histogram-based methods and system to estimate the transfer function of an ADC, and subsequently to linearize a non-linear ADC transfer function. Embodiments include blind algorithms that require no a priori knowledge of the input signal distribution. Embodiments can be implemented using cumulative (i.e., cumulative distribution function (CDF)) or non-cumulative (i.e., probability density function (PDF)) histograms. According to embodiments, a non-linear transfer function can be estimated by linearly approximating successive local intervals of the transfer function. Linearly approximated successive local intervals of the transfer function can then be used to fully characterize and closely estimate the transfer function.
摘要翻译：实施例提供基于直方图的方法和系统来估计ADC的传递函数，并且随后对非线性ADC传递函数进行线性化。实施例包括不需要输入信号分布的先验知识的盲算法。实施例可以使用累积（即，累积分布函数（CDF））或非累积（即，概率密度函数（PDF））直方图来实现。根据实施例，可以通过线性近似传递函数的连续局部间隔来估计非线性传递函数。传递函数的线性逼近的连续局部间隔可用于完全表征和密切估计传递函数。

4. 发明申请

US20080304596A1 Method and System for Receiving Audio, Video and Data Services with ATSC Enabled Television Sets 审中-公开
标题翻译：用于接收具有ATSC使能电视机的音频，视频和数据业务的方法和系统
公开(公告)号：US20080304596A1
公开(公告)日：2008-12-11
申请号：US11761504
申请日：2007-06-12
申请人： Loke Tan , Lionel J. D'Luna , Robindra Joshi
发明人： Loke Tan , Lionel J. D'Luna , Robindra Joshi
IPC分类号： H03D1/24
CPC分类号： H04N21/4344 , H04N21/4382
摘要： Certain aspects of a method and system for receiving audio, video and data services with advanced television systems committee (ATSC) enabled television sets may be provided. Aspects of the method may include conversion of a plurality of received quadrature amplitude modulated (QAM) signals into a plurality of vestigial side band (VSB) signals within a set-top box. The set top box may tune to each of the plurality of received QAM signals and demodulate each of the plurality of received QAM signals into a plurality of bitstreams and demultiplex the plurality of bitstreams. The demultiplexed plurality of bitstreams may be modulated into a plurality of VSB signals. The plurality of VSB signals may be modulated into a plurality of RF signals. One or more of the plurality of RF signals may be communicated to at least one of a plurality of VSB enabled television sets.
摘要翻译：可以提供用于接收具有高级电视系统委员会（ATSC）的电视机的音频，视频和数据服务的方法和系统的某些方面。该方法的方面可以包括将多个接收的正交幅度调制（QAM）信号转换成机顶盒内的多个残留边带（VSB）信号。机顶盒可以调谐到多个接收到的QAM信号中的每一个，并且将多个接收的QAM信号中的每一个解调为多个比特流并对多个比特流进行解复用。解复用的多个比特流可以被调制成多个VSB信号。多个VSB信号可以被调制成多个RF信号。多个RF信号中的一个或多个可以被传送到多个启用VSB的电视机中的至少一个。

5. 发明申请

US20060026659A1 Integrated cable modem 有权
公开(公告)号：US20060026659A1
公开(公告)日：2006-02-02
申请号：US11133275
申请日：2005-05-20
申请人： Donald McMullin , Lawrence Burns , Leonard Dauphinee , Ramon Gomez , Loke Tan
发明人： Donald McMullin , Lawrence Burns , Leonard Dauphinee , Ramon Gomez , Loke Tan
IPC分类号： H04N7/173
CPC分类号： H04N21/6168 , H04N21/25883 , H04N21/25891 , H04N21/4263
摘要： The present invention is an integrated cable modem tuner. In one embodiment, the upstream path and the downstream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and digital receiver portion that is integrated on a common semiconductor substrate with the power amplifier of the upstream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the cable modem appears to be a single chip configuration to the user.

6. 发明授权

US08907825B2 Imbalance and distortion cancellation for composite analog to digital converter (ADC) 有权
标题翻译：复合模数转换器（ADC）的不平衡和失真消除
公开(公告)号：US08907825B2
公开(公告)日：2014-12-09
申请号：US13118429
申请日：2011-05-29
申请人： Thomas J. Kolze , Bruce J. Currivan , Ramon Gomez , Loke Tan , Lin He
发明人： Thomas J. Kolze , Bruce J. Currivan , Ramon Gomez , Loke Tan , Lin He
IPC分类号： H03M1/06 , H03M1/10 , H03M1/18
CPC分类号： H03M1/1033 , H03M1/188
摘要： Imbalance and distortion cancellation for composite analog to digital converter (ADC). Such an ‘ADC’ is implemented using two or more ADCs may be employed for sampling (e.g., quantizing, digitizing, etc.) of an analog (e.g., continuous time) signal in accordance with generating a digital (e.g., discrete time) signal. Using at least two ADCs allows for the accommodation and sampling of various signals having a much broader dynamic range without suffering degradation in signal to noise ratio (SNR). Generally, the signal provided via at least one of the paths corresponding to at least one of the respective ADCs is scaled (e.g., attenuated), so that the various ADCs effectively sample signals of different magnitudes. The ADCs may respectively correspond to different magnitude and/or power levels (e.g., high power, lower power, any intermediary power level, etc.). Various implementations of compensation may be performed along the various paths corresponding to the respective ADCs.
摘要翻译：复合模数转换器（ADC）的不平衡和失真消除。根据生成数字（例如，离散时间）信号，可以使用两个或多个ADC来实现这样的“ADC”，用于对模拟（例如，连续时间）信号进行采样（例如，量化，数字化等）。使用至少两个ADC允许对具有更宽动态范围的各种信号进行调节和采样，而不会降低信噪比（SNR）。通常，通过对应于相应ADC中的至少一个的至少一个路径提供的信号被缩放（例如，衰减），使得各种ADC有效地采样不同幅度的信号。 ADC可以分别对应于不同的幅度和/或功率电平（例如，高功率，较低功率，任何中间功率电平等）。可以沿着对应于各个ADC的各种路径执行补偿的各种实现。

7. 发明授权

US08578434B2 Integrated cable modem 有权
标题翻译：集成电缆调制解调器
公开(公告)号：US08578434B2
公开(公告)日：2013-11-05
申请号：US11133275
申请日：2005-05-20
申请人： Donald G. McMullin , Lawrence M. Burns , Leonard Dauphinee , Ramon A. Gomez , Loke Tan
发明人： Donald G. McMullin , Lawrence M. Burns , Leonard Dauphinee , Ramon A. Gomez , Loke Tan
IPC分类号： H04N7/173
CPC分类号： H04N21/6168 , H04N21/25883 , H04N21/25891 , H04N21/4263
摘要： The present invention is an integrated cable modem tuner. In one embodiment, the upstream path and the downstream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and digital receiver portion that is integrated on a common semiconductor substrate with the power amplifier of the upstream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the cable modem appears to be a single chip configuration to the user.
摘要翻译：本发明是综合电缆调制解调器调谐器。在一个实施例中，上游路径和下游路径被集成在公共半导体衬底上。下行路径可以包括集成在具有上游路径的功率放大器的公共半导体衬底上的TV调谐器和数字接收器部分。在另一个实施例中，TV调谐器被实现在第一半导体衬底上，并且数字接收器部分和功率放大器配置在第二半导体衬底上。然而，两个基板安装在公共载体上，使得电缆调制解调器似乎是用户的单芯片配置。

8. 发明授权

US08208530B2 Apparatus and method for correcting IQ imbalance 有权
标题翻译：用于校正IQ不平衡的装置和方法
公开(公告)号：US08208530B2
公开(公告)日：2012-06-26
申请号：US11334628
申请日：2006-01-19
申请人： Loke Tan , Hanli Zou , William Ngai
发明人： Loke Tan , Hanli Zou , William Ngai
IPC分类号： H03K5/159
CPC分类号： H04L27/3863 , H03D3/009
摘要： An apparatus and method for correcting IQ imbalance are presented. An exemplary receiver for processing I and Q signals from a tuner includes: a non-decision directed (NDD) imbalance canceller coupled to receive the I and Q signals, and a decision directed (DD) imbalance canceller coupled to the non-decision directed imbalance canceller. The DD imbalance canceller converges after the NDD imbalance canceller converges, so as to correct IQ imbalances in the receiver. An exemplary method for processing I and Q signals from a tuner includes: (a) converging a NDD imbalance canceller to correct a majority of IQ imbalances, and (b) subsequently converging a DD imbalance canceller to correct a remainder of IQ imbalances not corrected in step (a). The apparatus and method correct frequency-dependent and frequency-independent IQ imbalances.
摘要翻译：提出了一种用于校正IQ不平衡的装置和方法。用于处理来自调谐器的I和Q信号的示例性接收器包括：耦合以接收I和Q信号的非决策导向（NDD）不平衡消除器，以及耦合到非决策导向不平衡的决策导向（DD）不平衡消除器消费者。在NDD不平衡消除器收敛之后，DD不平衡消除器收敛，以便纠正接收机中的IQ不平衡。用于处理来自调谐器的I和Q信号的示例性方法包括：（a）收敛NDD不平衡消除器以校正大多数IQ不平衡，以及（b）随后收敛DD不平衡消除器以校正未校正的IQ不平衡的余数步骤（a）。该装置和方法正确的频率依赖和频率无关的IQ失衡。

9. 发明申请

US20060203901A1 Apparatus and method for correcting IQ imbalance 有权
标题翻译：用于校正IQ不平衡的装置和方法
公开(公告)号：US20060203901A1
公开(公告)日：2006-09-14
申请号：US11334628
申请日：2006-01-19
申请人： Loke Tan , Hanli Zou , William Ngai
发明人： Loke Tan , Hanli Zou , William Ngai
IPC分类号： H03H7/30
CPC分类号： H04L27/3863 , H03D3/009
摘要： An apparatus and method for correcting IQ imbalance are presented. An exemplary receiver for processing I and Q signals from a tuner includes: a non-decision directed (NDD) imbalance canceller coupled to receive the I and Q signals, and a decision directed (DD) imbalance canceller coupled to the non-decision directed imbalance canceller. The DD imbalance canceller converges after the NDD imbalance canceller converges, so as to correct IQ imbalances in the receiver. An exemplary method for processing I and Q signals from a tuner includes: (a) converging a NDD imbalance canceller to correct a majority of IQ imbalances, and (b) subsequently converging a DD imbalance canceller to correct a remainder of IQ imbalances not corrected in step (a). The apparatus and method correct frequency-dependent and frequency-independent IQ imbalances.
摘要翻译：提出了一种用于校正IQ不平衡的装置和方法。用于处理来自调谐器的I和Q信号的示例性接收器包括：耦合以接收I和Q信号的非决策导向（NDD）不平衡消除器，以及耦合到非决策导向不平衡的决策导向（DD）不平衡消除器消费者。在NDD不平衡消除器收敛之后，DD不平衡消除器收敛，以便纠正接收机中的IQ不平衡。用于处理来自调谐器的I和Q信号的示例性方法包括：（a）收敛NDD不平衡消除器以校正大多数IQ不平衡，以及（b）随后收敛DD不平衡消除器以校正未校正的IQ不平衡的余数步骤（a）。该装置和方法正确的频率依赖和频率无关的IQ失衡。

10. 发明申请

US20060026661A1 Integrated set-top box 有权
标题翻译：集成机顶盒
公开(公告)号：US20060026661A1
公开(公告)日：2006-02-02
申请号：US11133237
申请日：2005-05-20
申请人： Donald McMullin , Lawrence Burns , Leonard Dauphinee , Ramon Gomez , Loke Tan
发明人： Donald McMullin , Lawrence Burns , Leonard Dauphinee , Ramon Gomez , Loke Tan
IPC分类号： H04N7/173
CPC分类号： H04N21/6168 , H04N7/17309 , H04N21/40
摘要： The present invention is an integrated set-top box. In one embodiment, the up-stream path and the down-stream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and a digital receiver portion that is integrated on the common semiconductor substrate with a power amplifier of the up-stream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the set-top box appears to be a single chip configuration to the user.
摘要翻译：本发明是一种集成的机顶盒。在一个实施例中，上游路径和下游路径被集成在公共半导体衬底上。下行路径可以包括集成在公共半导体衬底上的TV调谐器和数字接收器部分，其具有上行路径的功率放大器。在另一个实施例中，TV调谐器被实现在第一半导体衬底上，并且数字接收器部分和功率放大器配置在第二半导体衬底上。然而，两个基板安装在公共载体上，使得机顶盒看起来是用户的单芯片配置。

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