公开(公告)号：US07215714B2

公开(公告)日：2007-05-08

申请号：US10763488

申请日：2004-01-23

申请人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

发明人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

IPC分类号： H04L5/12

CPC分类号： H04L25/03312 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2732 ,  H03M13/2936 ,  H03M13/2957 ,  H03M13/6331 ,  H04L1/0041 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L25/03267 ,  H04L25/03318 ,  H04L25/063 ,  H04L25/497 ,  H04L27/02 ,  H04L27/066 ,  H04L2025/03382 ,  H04N5/04 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/4348 ,  H04N21/4382

摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.

公开(公告)号：US07187698B2

公开(公告)日：2007-03-06

申请号：US11076202

申请日：2005-03-09

申请人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

发明人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

IPC分类号： H04J3/04 ,  H04L5/12 ,  H03M13/00

CPC分类号： H04N21/2383 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/007 ,  H04L1/0071 ,  H04L2001/0092 ,  H04N21/4382

摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.

摘要翻译： 根据第一交错，正常排序的鲁棒VSB数据被重新排序以产生重排序的鲁棒VSB数据。 根据第二交错重新排序的稳健VSB数据和ATSC数据被重新排序以产生正常排序的鲁棒VSB数据和重新排序的ATSC数据。 通常排序稳健的VSB数据和重新排序的ATSC数据被时分复用以传输到接收机。 接收机根据接收机类型或用户选择丢弃重新排序的ATSC数据或正常排序的鲁棒VSB数据。 稳健的VSB接收机能够处理在外部解码器上游的正常排序的鲁棒VSB数据，而不会产生交错，从而避免与交织相关联的延迟。

公开(公告)号：US06765508B2

公开(公告)日：2004-07-20

申请号：US10674191

申请日：2003-09-29

申请人： Wayne E. Bretl ,  Timothy G. Laud

发明人： Wayne E. Bretl ,  Timothy G. Laud

IPC分类号： H03M700

CPC分类号： H03M7/3082 ,  H03M13/00 ,  H04L1/0041 ,  H04L1/0071 ,  H04L27/02 ,  H04N21/2383 ,  H04N21/4382

摘要： A field contains a map, a number of E-VSB data segments, and a number of VSB data segments. The map indicates at least the number of E-VSB data segments in the field. The E-VSB data segments are located in the field such that the spacing between the E-VSB segments comprises only x and x+1, where x is dependent on the number of E-VSB data segments in the field as indicated by the map.

摘要翻译： 字段包含映射，多个E-VSB数据段和多个VSB数据段。 该地图至少指示该领域中的E-VSB数据段的数目。 E-VSB数据段位于场中，使得E-VSB段之间的间隔仅包括x和x + 1，其中x取决于场中的E-VSB数据段的数目，如地图所示 。

公开(公告)号：US4554581A

公开(公告)日：1985-11-19

申请号：US701713

申请日：1985-02-14

申请人： Michael Tentler ,  David L. Walker ,  Wayne E. Bretl ,  Gregory A. Williams

发明人： Michael Tentler ,  David L. Walker ,  Wayne E. Bretl ,  Gregory A. Williams

IPC分类号： H04N7/167 ,  H04N7/171 ,  H04N7/16 ,  H04N5/52

CPC分类号： H04N7/1675 ,  H04N7/1713

摘要： An addressable subscription television decoder includes an input stage including an IF amplifier for converting a scrambled RF television signal to a composite baseband video signal. The baseband video signal comprises either a nominal sync component or a sync component having suppressed horizontal sync pulses during video fields and having non-suppressed sync pulses during vertical intervals, the vertical intervals also including selected encoded data signals. An AGC voltage for controlling the gain of the IF amplifier is developed by a circuit exhibiting a relatively short time constant whenever the composite baseband video signal is characterized by nominal level sync pulses, the time constant being increased in response to suppressed horizontal sync pulses. The sync pulses produced during the vertical intervals of the composite baseband video signal are thereby not subjected to excessive IF gain for facilitating processing of the data signals by the decoder.

摘要翻译： 一种可寻址的订阅电视解码器包括：输入级，包括用于将加扰的RF电视信号转换成复合基带视频信号的IF放大器。 基带视频信号包括在视频场期间具有抑制的水平同步脉冲的标称同步分量或同步分量，并且在垂直间隔期间具有非抑制的同步脉冲，垂直间隔还包括所选择的编码数据信号。 只要合成基带视频信号由标称电平同步脉冲表征，时间常数响应于抑制的水平同步脉冲而增加，用于控制IF放大器增益的AGC电压由具有较短时间常数的电路开发。 因此，在复合基带视频信号的垂直间隔期间产生的同步脉冲不会受到过度的IF增益，以便于解码器处理数据信号。

公开(公告)号：US4486782A

公开(公告)日：1984-12-04

申请号：US385635

申请日：1982-06-07

申请人： Wayne E. Bretl ,  Victor G. Mycynek

发明人： Wayne E. Bretl ,  Victor G. Mycynek

IPC分类号： H04N5/62

CPC分类号： H04N5/62

摘要： A system and method for stabilizing a voltage controlled oscillator (VCO) in an FM modulator is disclosed. The frequencies of a reference carrier and the VCO are sequentially detected in the same frequency discriminator, sampled and stored for later comparison in generating an error signal representing the average frequency difference between these two signals. This error signal is then summed with detected audio information and provided to the VCO as a correction signal for matching the VCO's frequency with the reference frequency of the carrier. VCO signal instabilities due to system drift are thus eliminated for improved signal processing. A time-based switching approach is utilized for sequentially detecting and sampling the reference carrier and the VCO output. One embodiment of the invention utilizes AC coupling in the correction signal feedback loop eliminating DC signal drift and improving system operating stability. The present invention is particularly adapted for operation in a signal decoder such as utilized in a frequency modulated subscription television system wherein the audio carrier is processed and provided to a conventional television receiver.

摘要翻译： 公开了一种用于稳定FM调制器中的压控振荡器（VCO）的系统和方法。 参考载波和VCO的频率在相同的鉴频器中被顺序地检测，采样和存储以用于稍后的比较，以产生表示这两个信号之间的平均频率差的误差信号。 然后将该误差信号与检测到的音频信息相加并提供给VCO，作为用于使VCO的频率与载波的参考匹配的校正信号。 因此消除了由于系统漂移引起的VCO信号不稳定性，以改善信号处理。 基于时间的切换方法被用于依次检测和采样参考载波和VCO输出。 本发明的一个实施例利用校正信号反馈环路中的AC耦合来消除DC信号漂移并提高系统的运行稳定性。 本发明特别适用于信号解码器中的操作，例如在频率调制的订购电视系统中使用的，其中音频载波被处理并提供给传统的电视接收机。

公开(公告)号：US4342048A

公开(公告)日：1982-07-27

申请号：US179368

申请日：1980-08-18

申请人： Scott L. Falater ,  Wayne E. Bretl

发明人： Scott L. Falater ,  Wayne E. Bretl

IPC分类号： H04N5/68

CPC分类号： H04N5/68

摘要： An automatic CRT tracking circuit for a television receiver includes an amplifier having adjustable gain and offset transfer functions for coupling a video signal to the cathode of the CRT electron gun. Feedback loops are used to adjust both the gain and offset transfer functions of the amplifier, either independently of each other or in a common mode, to compensate for changing cathode voltage versus cathode current characteristics such that a desired video signal versus cathode current relationship is achieved despite variations in the CRT.

摘要翻译： 用于电视接收机的自动CRT跟踪电路包括具有可调增益和偏移传递功能的放大器，用于将视频信号耦合到CRT电子枪的阴极。 反馈回路用于调节放大器的增益和偏移传递函数，彼此独立或共同模式，以补偿阴极电压与阴极电流特性的变化，从而实现所需的视频信号与阴极电流的关系 尽管CRT有变化。

公开(公告)号：US4331971A

公开(公告)日：1982-05-25

申请号：US208211

申请日：1980-11-19

申请人： Wayne E. Bretl

发明人： Wayne E. Bretl

IPC分类号： H04N9/77 ,  H04N9/535

CPC分类号： H04N9/77

摘要： A mode decision controller is described for actuating a conventional chrominance bandwith enhancement scheme in a color television receiver. A video signal detected by the receiver typically includes a relatively wide band luminance element and a relatively narrow band chrominance element, each of which are processed by the enhancement scheme to develop their first derivatives for use in enhancing the bandwith of the chrominance element. Either of these derivatives may be used as an input to the mode decision controller. The selected derivative is applied to a filter for removing components therefrom which extend above a given frequency range, thereby developing a frequency-limited output signal whose time domain exceeds the time domain of the selected first derivative. A signal processor receives the frequency-limited output signal and compresses its time domain to develop a control signal whose time domain is substantially equivalent to the time domain of the selected first derivative. The control signal is then used to activate the enhancement scheme.

摘要翻译： 描述了用于在彩色电视接收机中启动具有增强方案的常规色度带宽的模式决策控制器。 由接收机检测到的视频信号通常包括相对较宽的频带亮度元素和相对较窄的频带色度元素，每个元素都被增强方案处理，以开发出其第一个导数，用于增强色度元素的带宽。 这些导数中的任何一个可以用作模式决策控制器的输入。 选择的导数应用于滤波器，用于从其上移除在其上延伸到给定频率范围之外的分量，由此开发出其时域超过所选择的一阶导数的时域的频率限制输出信号。 信号处理器接收频率限制输出信号并压缩其时域以产生其时域基本上等于所选择的一阶导数的时域的控制信号。 然后控制信号用于激活增强方案。

公开(公告)号：US09219629B1

公开(公告)日：2015-12-22

申请号：US14470413

申请日：2014-08-27

申请人： Ning Sun ,  Wayne E. Bretl ,  Nejib Ammar

发明人： Ning Sun ,  Wayne E. Bretl ,  Nejib Ammar

IPC分类号： H04L27/06 ,  H04L27/26

CPC分类号： H04L25/0206 ,  H04L27/2655

摘要： Adaptive low complexity minimum mean square error (MMSE) channel estimator for OFDM systems operating over mobile channel. Complexity of the estimator is reduced by partitioning sub-carriers into windows where, window size is optimized by considering channel model mismatch error (MME). Three types of adaptive windowed MMSE (W-MMSE) estimators include: A first type, a simplified delay profile applied as channel reference model, and optimum window size adaptive to the estimated signal-to-noise ratio. A second type, a group of candidate channel reference models are considered. The receiver roughly estimates and selects current reference model from candidate group, then adapts optimum window size based on the estimated SNR and selected channel model. A third type, the current channel statistics are finely estimated and window size is iteratively optimized at receiver. The first two adaptive W-MMSE estimators are tolerant to channel model mismatch error and the third captures channel variations to realize real-time estimation.

摘要翻译： 用于通过移动通道运行的OFDM系统的自适应低复杂度最小均方误差（MMSE）信道估计器。 通过将子载波划分为窗口来减少估计器的复杂性，其中通过考虑信道模型不匹配错误（MME）优化窗口大小。 三种类型的自适应窗口MMSE（W-MMSE）估计器包括：第一类型，作为信道参考模型应用的简化延迟分布，以及自适应估计信噪比的最佳窗口大小。 考虑第二类型，一组候选通道参考模型。 接收机粗略地估计并从候选组中选择当前参考模型，然后根据估计的SNR和所选择的信道模型来适应最优窗口大小。 第三种类型，精细估计当前的信道统计量，并在接收端迭代优化窗口大小。 前两个自适应W-MMSE估计器容忍信道模型失配误差，第三个捕获信道变化以实现实时估计。

公开(公告)号：US08213466B2

公开(公告)日：2012-07-03

申请号：US11931504

申请日：2007-10-31

申请人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

发明人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

IPC分类号： H04J3/04 ,  H04L5/12 ,  H03M13/00

CPC分类号： H04N21/2383 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/007 ,  H04L1/0071 ,  H04L2001/0092 ,  H04N21/4382

摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.

公开(公告)号：US08213465B2

公开(公告)日：2012-07-03

申请号：US11931269

申请日：2007-10-31

申请人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

发明人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

IPC分类号： H04J3/04 ,  H04L5/12 ,  H03M13/00

CPC分类号： H04L25/03312 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2732 ,  H03M13/2936 ,  H03M13/2957 ,  H03M13/6331 ,  H04L1/0041 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L25/03267 ,  H04L25/03318 ,  H04L25/063 ,  H04L25/497 ,  H04L27/02 ,  H04L27/066 ,  H04L2025/03382 ,  H04N5/04 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/4348 ,  H04N21/4382

摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.

摘要翻译： 根据第一交错，正常排序的鲁棒VSB数据被重新排序以产生重排序的鲁棒VSB数据。 根据第二交错重新排序的稳健VSB数据和ATSC数据被重新排序以产生正常排序的鲁棒VSB数据和重新排序的ATSC数据。 通常排序稳健的VSB数据和重新排序的ATSC数据被时分复用以传输到接收机。 接收机根据接收机类型或用户选择丢弃重新排序的ATSC数据或正常排序的鲁棒VSB数据。 稳健的VSB接收机能够处理在外部解码器上游的正常排序的鲁棒VSB数据，而不会产生交错，从而避免与交织相关联的延迟。