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1. 发明授权

US5835532A Blind equalizer for a vestigial sideband signal 失效
标题翻译：盲均衡器用于残留边带信号
公开(公告)号：US5835532A
公开(公告)日：1998-11-10
申请号：US704789
申请日：1996-09-05
申请人： Christopher Hugh Strolle , Steven Todd Jaffe
发明人： Christopher Hugh Strolle , Steven Todd Jaffe
IPC分类号： H04L25/03 , H04L25/06 , H04L27/02 , H04N5/21 , H04N5/44 , H04N5/455 , H04N7/04
CPC分类号： H04N5/455 , H04L25/0305 , H04L25/0307 , H04L25/061 , H04L25/067 , H04L27/02 , H04N5/211 , H04L2025/03382 , H04L2025/0363 , H04N5/4401
摘要： A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format with a one dimensional data constellation includes a first carrier recovery network (18), an equalizer (20), and a second carrier recovery network (22, 30, 62). A multiple stage quantizer network (50, 66) exhibiting progressively finer resolution is associated with the operation of the equalizer for providing blind equalization without need of a "training" signal. The second carrier recovery network includes a phase detector (30) wherein a one symbol delayed (312) input signal and a quantized (310) input signal are multiplied (316), and an unquantized input signal and a quantized (310) one symbol delayed (314) input signal are multiplied (318). Signals produced by the multiplication are subtractively combined (320) to produce an output signal representing a carrier phase error.
摘要翻译： PCT No.PCT / US95 / 03132 Sec。 371日期：1996年9月5日 102（e）1996年9月5日PCT PCT 1995年3月13日PCT公布。出版物WO95 / 26075 日期1995年9月28日一种用于处理以残留边带（VSB）格式发送的具有一维数据星座的HDTV信号的电视信号接收机包括第一载波恢复网络（18），均衡器（20）和第二载波恢复网络（22,30,62）。显示逐步更精细分辨率的多级量化器网络（50,66）与均衡器的操作相关联，用于提供盲均衡，而不需要“训练”信号。第二载波恢复网络包括相位检测器（30），其中将一个符号延迟（312）输入信号和量化（310）输入信号相乘（316），并且未量化的输入信号和量化（310）一个符号被延迟（314）输入信号相乘（318）。由乘法产生的信号被减法地组合（320）以产生表示载波相位误差的输出信号。

2. 发明授权

US5872815A Apparatus for generating timing signals for a digital television signal receiver 失效
标题翻译：一种用于产生数字电视信号接收机的定时信号的装置
公开(公告)号：US5872815A
公开(公告)日：1999-02-16
申请号：US602943
申请日：1996-02-16
申请人： Christopher Hugh Strolle , Tianmin Liu , Steven Todd Jaffe
发明人： Christopher Hugh Strolle , Tianmin Liu , Steven Todd Jaffe
IPC分类号： H03D3/00 , H03J7/04 , H04L7/027 , H04L7/033 , H04L25/03 , H04L27/00 , H04N5/44 , H03D1/00 , H04L27/22
CPC分类号： H04L27/0008 , H03J7/04 , H04L25/0307 , H04L7/0278 , H04N5/4401 , H03D3/007 , H04L2025/03382 , H04L2025/0342 , H04L2025/0349 , H04L7/0334
摘要： A QAM/VSB digital receiver is disclosed which includes a source of a QAM/VSB signal. An analog-to-digital converter is coupled to the QAM/VSB signal source, and is further responsive to a sample clock signal. A filter/complement is coupled to the analog-to-digital converter and has a first output terminal which produces a low-pass filtered QAM/VSB signal, and a second output terminal which produces a high-pass filtered QAM/VSB signal complementary to the low-pass filtered QAM/VSB signal. A sample clock generating circuit is coupled to the second output terminal of the filter/complement and produces the sample clock signal in response to the high-pass filtered QAM/VSB signal.
摘要翻译：公开了一种包括QAM / VSB信号源的QAM / VSB数字接收机。模数转换器耦合到QAM / VSB信号源，并进一步响应采样时钟信号。滤波器/补码耦合到模数转换器，并且具有产生低通滤波QAM / VSB信号的第一输出端和产生高通滤波QAM / VSB信号的第二输出端低通滤波QAM / VSB信号。采样时钟发生电路耦合到滤波器/补码的第二输出端，并响应于高通滤波QAM / VSB信号产生采样时钟信号。

3. 发明授权

US5805242A Carrier independent timing recovery system for a vestigial sideband modulated signal 失效
标题翻译：载波独立定时恢复系统，用于残留边带调制信号
公开(公告)号：US5805242A
公开(公告)日：1998-09-08
申请号：US704787
申请日：1996-09-06
申请人： Christopher Hugh Strolle , Steven Todd Jaffe
发明人： Christopher Hugh Strolle , Steven Todd Jaffe
IPC分类号： H03D1/22 , H03D1/24 , H04L25/03 , H04L25/06 , H04L27/02 , H04L27/06 , H04N5/21 , H04N5/44 , H04N5/455 , H04L27/16
CPC分类号： H04L7/0278 , H03D1/24 , H04L25/0305 , H04L25/0307 , H04L25/061 , H04L25/067 , H04L27/02 , H04L27/066 , H04N21/4382 , H04N5/211 , H04N5/455 , H03D1/2254 , H04L2025/03382 , H04L2025/0363 , H04N5/4401
摘要： A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format includes input complex filters shared by a timing recovery network (30) and a carrier recovery network (50). The filter network includes a pair of upper and lower band edge filters (20, 22) mirror imaged around the upper and lower band edges of the VSB signal for producing suppressed subcarrier AM output signals. The timing recovery network includes a phase detector (28, 38, 62) and responds to an AM signal derived from the two filters (via 26) for synchronizing a system clock (CLK). The carrier recovery network (50) also includes a phase detector (54, 60, 62, 64), and responds to outputs from one or both of the filters for producing an output error signal (.DELTA.) representing a phase/frequency offset of the VSB signal. The error signal is used to reduce or eliminate the offset to produce a recovered baseband or near baseband signal. A subsequent equalizer eliminates any residual phase offsets in the recovered signal.
摘要翻译： PCT No.PCT / US95 / 03131 Sec。 371日期1996年9月6日 102（e）1996年9月6日PCT PCT 1995年3月13日PCT公布。公开号WO95 / 26074 日期1995年9月28日用于处理以残留边带（VSB）格式发送的HDTV信号的电视信号接收机包括由定时恢复网络（30）和载波恢复网络（50）共享的输入复合滤波器。滤波器网络包括一对在VSB信号的上和下边缘边缘成像的上下边缘滤波器（20,22），用于产生抑制的副载波AM输出信号。定时恢复网络包括相位检测器（28,38,62），并响应从两个滤波器（经由26）得到的用于同步系统时钟（CLK）的AM信号。载波恢复网络（50）还包括相位检测器（54,60,62,64），并对来自一个或两个滤波器的输出进行响应，以产生表示相位/频率偏移的输出误差信号（DELTA） VSB信号。误差信号用于减少或消除偏移以产生恢复的基带或近基带信号。随后的均衡器消除了恢复信号中的任何残留相位偏移。

4. 发明授权

US5706057A Phase detector in a carrier recovery network for a vestigial sideband signal 失效
标题翻译：用于残留边带信号的载波恢复网络中的相位检测器
公开(公告)号：US5706057A
公开(公告)日：1998-01-06
申请号：US704788
申请日：1996-09-05
申请人： Christopher Hugh Strolle , Steven Todd Jaffe
发明人： Christopher Hugh Strolle , Steven Todd Jaffe
IPC分类号： H04L25/03 , H04L25/06 , H04L27/02 , H04L27/06 , H04N5/21 , H04N5/44 , H04N5/455 , H04N7/04
CPC分类号： H04N5/455 , H04L25/0305 , H04L25/0307 , H04L25/061 , H04L25/067 , H04L27/02 , H04L27/066 , H04N21/4382 , H04N5/211 , H04L2025/03382 , H04L2025/0363 , H04N5/4401
摘要： A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format with a one-dimensional data constellation includes a first carrier recovery network (18), an equalizer (20), and a second carrier recovery network (22, 30, 62). A multiple stage quantizer network (50, 66) exhibiting progressively finer resolution is associated with the operation of the equalizer for providing blind equalization without need of a "training" signal. The second carrier recovery network includes a phase detector (30) wherein a one-symbol delayed (312) input signal and a quantized (310) input signal are multiplied (316), and an unquantized input signal and a quantized (310) one-symbol delayed (314) input signal are multiplied (316), and an unquantized input signal and a quantized (310) one-symbol delayed (314) input signal are multiplied (318). Signals produced by the multiplication are subtractively combined (320) to produce an output signal representing carrier phase error.
摘要翻译： PCT No.PCT / US95 / 03133 Sec。 371日期：1996年9月5日 102（e）1996年9月5日PCT PCT 1995年3月13日PCT公布。第WO95 / 26105号公报日期1995年9月28日一种用于处理以一维数据星座以残留边带（VSB）格式发送的HDTV信号的电视信号接收机包括第一载波恢复网络（18），均衡器（20）和第二载波恢复网络（22,30,62）。显示逐步更精细分辨率的多级量化器网络（50,66）与均衡器的操作相关联，用于提供盲均衡，而不需要“训练”信号。第二载波恢复网络包括相位检测器（30），其中将一符号延迟（312）输入信号和量化（310）输入信号相乘（316），以及未量化输入信号和量化（310）符号延迟（314）输入信号相乘（316），并且将未量化输入信号和量化（310）一符号延迟（314）输入信号相乘（318）。由乘法产生的信号被减法组合（320）以产生表示载波相位误差的输出信号。

5. 发明授权

US6154503A Automatic gain control system that responds to baseband signal distortion 失效
标题翻译：响应基带信号失真的自动增益控制系统
公开(公告)号：US6154503A
公开(公告)日：2000-11-28
申请号：US869590
申请日：1997-06-05
申请人： Christopher Hugh Strolle
发明人： Christopher Hugh Strolle
IPC分类号： H04L27/38 , H03G3/30 , H04L23/02
CPC分类号： H03G3/3068 , H04L27/3809
摘要： An automatic gain control (AGC) system that monitors the distortion of the outer constellation points of a complex modulation format such as quadrature amplitude modulation (QAM) and adjusts both the RF and IF AGC gain to minimize such distortion. In particular, the receiver contains at least two stages of AGC gain. Typically, the RF AGC amplifier is contained in the tuner that is followed by an IF AGC amplifier. The IF amplifier is coupled to a mixer and an associated low pass filter which, in combination and when driven by a particular frequency, produces a baseband (or near baseband) signal, The baseband signal is digitized and processed by a gain control circuit. The gain control circuit produces IF and RF AGC signals that control the gain of the respective AGC stages.
摘要翻译：一种自动增益控制（AGC）系统，其监视诸如正交幅度调制（QAM）的复调制格式的外部星座点的失真，并且调整RF和IF AGC增益以最小化这种失真。特别地，接收器包含至少两个AGC增益级。通常，RF AGC放大器包含在随后是IF AGC放大器的调谐器中。 IF放大器耦合到混频器和相关联的低通滤波器，其组合并且当由特定频率驱动时产生基带（或近基带）信号。基带信号被增益控制电路数字化和处理。增益控制电路产生控制各个AGC级的增益的IF和RF AGC信号。

6. 发明授权

US07113539B1 Method and apparatus for performing bandedge equalization 失效
标题翻译：用于执行边带均衡的方法和装置
公开(公告)号：US07113539B1
公开(公告)日：2006-09-26
申请号：US08869589
申请日：1997-06-05
申请人： Christopher Hugh Strolle
发明人： Christopher Hugh Strolle
IPC分类号： H03H7/30
CPC分类号： H04L25/03343 , H04L7/027 , H04L7/0278 , H04L25/03828
摘要： A method and apparatus for performing bandedge equalization. Specifically, the apparatus contains a pre-equalizer for adjusting the amplitudes of the bandedges of a broadband signal in response to a control signal. A bandedge filter is connected to the pre-equalizer and extracts a bandedge signal from the broadband signal. Lastly, a bandedge signal processor that is connected to the bandedge filter generates the control signal in response to said bandedge signal. In this manner, when the bandedges of the broadband signal are asymmetric, the apparatus adjusts the signal strength of each bandedge with respect to one another to equalize (balance) the bandedges. The balanced signal can then be used by a bandedge timing recovery circuit. As such, the accuracy of a bandedge timing recovery circuit is not impacted by the asymmetric bandedges of the input signal.
摘要翻译：一种用于执行带边均衡的方法和装置。具体地，该装置包含用于响应于控制信号调整宽带信号的带宽的幅度的预均衡器。带边滤波器连接到预均衡器，并从宽带信号中提取带状信号。最后，连接到带边滤波器的带边信号处理器响应于所述带状信号产生控制信号。以这种方式，当宽带信号的带状是不对称时，该装置相对于彼此调整每个带束的信号强度以均衡（平衡）该带。然后平衡信号可以由带边定时恢复电路使用。因此，带边定时恢复电路的精度不受输入信号的非对称带束的影响。

7. 发明授权

US5894334A Carrier recovery system for a vestigial sideband signal 失效
标题翻译：载波恢复系统，用于残留边带信号
公开(公告)号：US5894334A
公开(公告)日：1999-04-13
申请号：US702529
申请日：1996-09-05
申请人： Christopher Hugh Strolle , Steven Todd Jaffe
发明人： Christopher Hugh Strolle , Steven Todd Jaffe
IPC分类号： H04L25/03 , H04L25/06 , H04L27/02 , H04L27/06 , H04N5/21 , H04N5/44 , H04N5/455 , H04N7/015
CPC分类号： H04L25/0305 , H04L25/0307 , H04L25/061 , H04L25/067 , H04L27/02 , H04L27/066 , H04N5/211 , H04N5/455 , H04L2025/03382 , H04L2025/0363 , H04N5/4401
摘要： A television signal receiver for processing an HDTV signal transmitted in a vestigial sideband (VSB) format includes input complex filters shared by a timing recovery network (30) and a carrier recovery network (50). The filter network includes a pair of upper and lower band edge filters (20, 22) mirror imaged around the upper and lower band edges of the VSB signal for producing suppressed subcarrier AM output signals. The timing recovery network includes a phase detector (28, 38, 62) and responds to an AM signal derived from the two filters (via 26) for synchronizing a system clock (CLK). The carrier recovery network (50) also includes a phase detector (54, 60, 62, 64), and responds to outputs from one or both of the filters for producing an output error signal (.DELTA.) representing a phase/frequency offset of the VSB signal. The error signal is used to reduce or eliminate the offset to produce a recovered baseband or near baseband signal. A subsequent equalizer eliminates any residual phase offsets in the recovered signal.
摘要翻译： PCT No.PCT / US95 / 03155 Sec。 371日期：1996年9月5日 102（e）1996年9月5日PCT PCT 1995年3月13日PCT公布。第WO95 / 26101号公报日期1995年9月28日用于处理以残留边带（VSB）格式发送的HDTV信号的电视信号接收机包括由定时恢复网络（30）和载波恢复网络（50）共享的输入复合滤波器。滤波器网络包括一对在VSB信号的上和下边缘边缘成像的上下边缘滤波器（20,22），用于产生抑制的副载波AM输出信号。定时恢复网络包括相位检测器（28,38,62），并响应从两个滤波器（经由26）得到的用于同步系统时钟（CLK）的AM信号。载波恢复网络（50）还包括相位检测器（54,60,62,64），并对来自一个或两个滤波器的输出进行响应，以产生表示相位/频率偏移的输出误差信号（DELTA） VSB信号。误差信号用于减少或消除偏移以产生恢复的基带或近基带信号。随后的均衡器消除了恢复信号中的任何残留相位偏移。

8. 发明授权

US5757855A Data detection for partial response channels 失效
标题翻译：部分响应通道的数据检测
公开(公告)号：US5757855A
公开(公告)日：1998-05-26
申请号：US565608
申请日：1995-11-29
申请人： Christopher Hugh Strolle , Tianmin Liu , Steven Todd Jaffe
发明人： Christopher Hugh Strolle , Tianmin Liu , Steven Todd Jaffe
IPC分类号： G11B20/10 , G11B20/18 , H04L25/03 , H04L25/08 , H04L25/497 , H04L5/12 , H04L23/02
CPC分类号： H04L25/03267
摘要： A data detector is disclosed which includes a source of a data signal representing a sequence of symbols. A maximum likelihood sequence detector, is coupled to the data signal source, and produces a most likely survivor sequence, which includes a plurality of symbols. A decision feedback equalizer and a phase detector, controlling the timing of the sampling of the data signal, are made responsive to the most likely survivor sequence.
摘要翻译：公开了一种数据检测器，其包括表示符号序列的数据信号源。最大似然序列检测器耦合到数据信号源，并且产生最可能的存活序列，其包括多个符号。对最可能的幸存者序列作出响应，决定反馈均衡器和相位检测器控制数据信号的采样定时。

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