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公开(公告)号：US20090290659A1
公开(公告)日：2009-11-26
申请号：US12414892
申请日：2009-03-31
IPC分类号： H04L27/06
摘要： A channel stacking system includes first and second downconverting stages, first and second analog to digital converters, and a digital switching and signal processor. The first downconverting stage includes a first downconverter circuit having an input for receiving a first RF input signal which includes a multitude of first channels. The first downconverter circuit frequency downconverts the first RF input signal to a first IF signal which includes the multitude of first channels. The first analog-to-digital converter converts the first IF signal to a first digital IF signal. The second downconverter stage includes a second downconverter circuit having an input for receiving a second RF input signal which includes a multitude of second channels. The second downconverter circuit frequency downconverts the second RF input signal to a second IF signal including said multitude of second channels.
摘要翻译： 信道堆叠系统包括第一和第二下变频级，第一和第二模数转换器以及数字开关和信号处理器。 第一下变频级包括具有用于接收包括多个第一通道的第一RF输入信号的输入的第一下变频器电路。 第一下变频器电路将第一RF输入信号下变频到包括多个第一通道的第一IF信号。 第一模数转换器将第一IF信号转换成第一数字IF信号。 第二下变频器级包括具有用于接收包括多个第二通道的第二RF输入信号的输入的第二下变频器电路。 第二下变频器电路将第二RF输入信号下变频到包括所述多个第二通道的第二IF信号。
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公开(公告)号：US08345798B2
公开(公告)日：2013-01-01
申请号：US12414892
申请日：2009-03-31
IPC分类号： H03K9/00
摘要： A channel stacking system includes first and second downconverting stages, first and second analog to digital converters, and a digital switching and signal processor. The first downconverting stage includes a first downconverter circuit having an input for receiving a first RF input signal which includes a multitude of first channels. The first downconverter circuit frequency downconverts the first RF input signal to a first IF signal which includes the multitude of first channels. The first analog-to-digital converter converts the first IF signal to a first digital IF signal. The second downconverter stage includes a second downconverter circuit having an input for receiving a second RF input signal which includes a multitude of second channels. The second downconverter circuit frequency downconverts the second RF input signal to a second IF signal including said multitude of second channels.
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3.发明授权公开(公告)号：US08300681B2
公开(公告)日：2012-10-30
申请号：US13220530
申请日：2011-08-29
IPC分类号： H04B1/38
CPC分类号： H04H40/90
摘要： A frequency translation system includes first and second translational switches, and a signal bus coupled therebetween. The first translational switch includes one or more inputs configured to receive a respective one or more first input signals, a first plurality of outputs, and a second plurality of outputs. The second translational switch includes one or more inputs configured to receive a respective one or more second input signals, a first output, and a second output. The signal bus, coupled between the first and second translational switches, includes (i) a first bus line coupled to a first one of the first plurality of outputs of the first translational switch, and to the first output of the second translational switch, and (ii) a second bus line coupled to a first one of the second plurality of outputs of the first translational switch, and to the second output of the second translational switch.
摘要翻译： 频率转换系统包括第一和第二平移开关以及耦合在其间的信号总线。 第一平移开关包括被配置为接收相应的一个或多个第一输入信号，第一多个输出和第二多个输出的一个或多个输入。 第二平移开关包括被配置为接收相应的一个或多个第二输入信号，第一输出和第二输出的一个或多个输入。 耦合在第一和第二平移开关之间的信号总线包括（i）耦合到第一平移开关的第一多个输出中的第一个输出端和第二平移开关的第一输出端的第一总线线路，以及 （ii）耦合到第一平移开关的第二多个输出中的第一个输出的第二总线以及第二平移开关的第二输出。
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4.发明授权公开(公告)号：US08009725B2
公开(公告)日：2011-08-30
申请号：US12015774
申请日：2008-01-17
IPC分类号： H04B1/38
CPC分类号： H04H40/90
摘要： A translational switch system includes first and second translational switches, and a signal bus coupled therebetween. The first translational switch includes one or more inputs configured to receive a respective one or more first input signals, a first plurality of outputs, and a second plurality of outputs. The second translational switch includes one or more inputs configured to receive a respective one or more second input signals, a first output, and a second output. The signal bus, coupled between the first and second translational switches, includes (i) a first bus line coupled to a first one of the first plurality of outputs of the first translational switch, and to the first output of the second translational switch, and (ii) a second bus line coupled to a first one of the second plurality of outputs of the first translational switch, and to the second output of the second translational switch.
摘要翻译： 平移开关系统包括第一和第二平移开关以及耦合在其间的信号总线。 第一平移开关包括被配置为接收相应的一个或多个第一输入信号，第一多个输出和第二多个输出的一个或多个输入。 第二平移开关包括被配置为接收相应的一个或多个第二输入信号，第一输出和第二输出的一个或多个输入。 耦合在第一和第二平移开关之间的信号总线包括（i）耦合到第一平移开关的第一多个输出中的第一个输出端和第二平移开关的第一输出端的第一总线线路，以及 （ii）耦合到第一平移开关的第二多个输出中的第一个输出的第二总线以及第二平移开关的第二输出。
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公开(公告)号：US08121550B2
公开(公告)日：2012-02-21
申请号：US12301229
申请日：2007-06-29
CPC分类号： H04B7/18517
摘要： A satellite interference canceling system cancels the interference between two or more signals received by a satellite receiver. The signals can be two signals experiencing cross polarization interference or signals that experience interference from other satellite signals. Gain and phase are applied to the received signals and then combined with the other signals to result in cancellation by subtraction. The gain and phase values needed to cancel the interference are derived from measurements of carrier-to-noise ratio (C/N) as an indication of the interference level. The C/N can be measured in the set-top box indoor unit. Coherency restoration is performed in receivers that downconvert the signals before performing interference cancellation.
摘要翻译： 卫星干扰消除系统消除由卫星接收机接收的两个或多个信号之间的干扰。 信号可以是经历交叉极化干扰的两个信号或经受来自其它卫星信号的干扰的信号。 增益和相位应用于接收信号，然后与其他信号相结合，通过减法得到取消。 消除干扰所需的增益和相位值是从作为干扰电平的指示的载波噪声比（C / N）的测量得出的。 C / N可以在机顶盒室内机中测量。 在执行干扰消除之前，在对信号进行下变频的接收机中执行一致性恢复。
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公开(公告)号：US20080178227A1
公开(公告)日：2008-07-24
申请号：US12016998
申请日：2008-01-19
IPC分类号： H04N7/20
摘要： An outdoor satellite receiving unit (ODU) receives several independent satellite signals, selects two signals with a switch matrix, downconverts the two signals to a bandstacked signal with a high and a low band signal, and outputs the bandstacked signal on the same cable to receiver units. Several satellite signals can be selected in groups of two or more and output to independent receiver units. Signal selecting is performed at the received radio frequency (RF) and bandstacking is performed with a single downconversion step to an intermediate frequency (IF). Channel stacking on the same cable of more than two channels from several satellites can be achieved by using frequency agile downconverters and bandpass filters prior to combining at the IF output. A slow transitioning switch minimizes signal disturbances when switching and maintains input impedance at a constant value.
摘要翻译： 一个室外卫星接收单元（ODU）接收几个独立的卫星信号，用开关矩阵选择两个信号，将两个信号下变频成带高信号的带状信号，并将同频带上的带状信号输出到接收机 单位。 可以选择两个或更多个的几个卫星信号并输出到独立的接收机单元。 在接收的射频（RF）下执行信号选择，并且通过单个下变频步骤对中频（IF）执行带堆叠。 通过在IF输出组合之前，可以通过使用频率敏捷下变频器和带通滤波器来实现来自多个卫星的多于两个信道的相同电缆上的信道堆叠。 缓慢的转换开关使切换时的信号干扰最小化，并将输入阻抗维持在恒定值。
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公开(公告)号：US08892026B2
公开(公告)日：2014-11-18
申请号：US13334975
申请日：2011-12-22
摘要： An outdoor satellite receiving unit (ODU) receives several independent satellite signals, selects two signals with a switch matrix, downconverts the two signals to a bandstacked signal with a high and a low band signal, and outputs the bandstacked signal on the same cable to receiver units. Several satellite signals can be selected in groups of two or more and output to independent receiver units. Signal selecting is performed at the received radio frequency (RF) and bandstacking is performed with a single downconversion step to an intermediate frequency (IF). Channel stacking on the same cable of more than two channels from several satellites can be achieved by using frequency agile downconverters and bandpass filters prior to combining at the IF output. A slow transitioning switch minimizes signal disturbances when switching and maintains input impedance at a constant value.
摘要翻译： 一个室外卫星接收单元（ODU）接收几个独立的卫星信号，用开关矩阵选择两个信号，将两个信号下变频成带高信号的带状信号，并将同频带上的带状信号输出到接收机 单位。 可以选择两个或更多个的几个卫星信号并输出到独立的接收机单元。 在接收的射频（RF）下执行信号选择，并且通过单个下变频步骤对中频（IF）执行带堆叠。 通过在IF输出组合之前，可以通过使用频率敏捷下变频器和带通滤波器来实现来自多个卫星的多于两个信道的相同电缆上的信道堆叠。 缓慢的转换开关使切换时的信号干扰最小化，并将输入阻抗维持在恒定值。
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公开(公告)号：US08086170B2
公开(公告)日：2011-12-27
申请号：US12016998
申请日：2008-01-19
IPC分类号： H04H20/74
摘要： An outdoor satellite receiving unit (ODU) receives several independent satellite signals, selects two signals with a switch matrix, downconverts the two signals to a bandstacked signal with a high and a low band signal, and outputs the bandstacked signal on the same cable to receiver units. Several satellite signals can be selected in groups of two or more and output to independent receiver units. Signal selecting is performed at the received radio frequency (RF) and bandstacking is performed with a single downconversion step to an intermediate frequency (IF). Channel stacking on the same cable of more than two channels from several satellites can be achieved by using frequency agile downconverters and bandpass filters prior to combining at the IF output. A slow transitioning switch minimizes signal disturbances when switching and maintains input impedance at a constant value.
摘要翻译： 一个室外卫星接收单元（ODU）接收几个独立的卫星信号，用开关矩阵选择两个信号，将两个信号下变频成带高信号的带状信号，并将同频带上的带状信号输出到接收机 单位。 可以选择两个或更多个的几个卫星信号并输出到独立的接收机单元。 在接收的射频（RF）下执行信号选择，并且通过单个下变频步骤对中频（IF）执行带堆叠。 通过在IF输出组合之前，可以通过使用频率敏捷下变频器和带通滤波器来实现来自多个卫星的多于两个信道的相同电缆上的信道堆叠。 缓慢的转换开关使切换时的信号干扰最小化，并将输入阻抗维持在恒定值。
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公开(公告)号：US20090102706A1
公开(公告)日：2009-04-23
申请号：US12301229
申请日：2007-06-29
IPC分类号： H04B7/185
CPC分类号： H04B7/18517
摘要： A satellite interference canceling system cancels the interference between two or more signals received by a satellite receiver. The signals can be two signals experiencing cross polarization interference or signals that experience interference from other satellite signals. Gain and phase are applied to the received signals and then combined with the other signals to result in cancellation by subtraction. The gain and phase values needed to cancel the interference are derived from measurements of carrier-to-noise ratio (C/N) as an indication of the interference level. The C/N can be measured in the set-top box indoor unit. Coherency restoration is performed in receivers that downconvert the signals before performing interference cancellation.
摘要翻译： 卫星干扰消除系统消除由卫星接收机接收的两个或多个信号之间的干扰。 信号可以是经历交叉极化干扰的两个信号或经受来自其它卫星信号的干扰的信号。 增益和相位应用于接收信号，然后与其他信号相结合，通过减法得到取消。 消除干扰所需的增益和相位值是从作为干扰电平的指示的载波噪声比（C / N）的测量得出的。 C / N可以在机顶盒室内机中测量。 在执行干扰消除之前，在对信号进行下变频的接收机中执行一致性恢复。
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10.发明申请公开(公告)号：US20080174384A1
公开(公告)日：2008-07-24
申请号：US12015774
申请日：2008-01-17
IPC分类号： H01P1/10
CPC分类号： H04H40/90
摘要： A translational switch system includes first and second translational switches, and a signal bus coupled therebetween. The first translational switch includes one or more inputs configured to receive a respective one or more first input signals, a first plurality of outputs, and a second plurality of outputs. The second translational switch includes one or more inputs configured to receive a respective one or more second input signals, a first output, and a second output. The signal bus, coupled between the first and second translational switches, includes (i) a first bus line coupled to a first one of the first plurality of outputs of the first translational switch, and to the first output of the second translational switch, and (ii) a second bus line coupled to a first one of the second plurality of outputs of the first translational switch, and to the second output of the second translational switch.
摘要翻译： 平移开关系统包括第一和第二平移开关以及耦合在其间的信号总线。 第一平移开关包括被配置为接收相应的一个或多个第一输入信号，第一多个输出和第二多个输出的一个或多个输入。 第二平移开关包括被配置为接收相应的一个或多个第二输入信号，第一输出和第二输出的一个或多个输入。 耦合在第一和第二平移开关之间的信号总线包括（i）耦合到第一平移开关的第一多个输出中的第一个输出端和第二平移开关的第一输出端的第一总线线路，以及 （ii）耦合到第一平移开关的第二多个输出中的第一个输出的第二总线以及第二平移开关的第二输出。
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