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公开(公告)号：US20100244926A1
公开(公告)日：2010-09-30
申请号：US12795291
申请日：2010-06-07
申请人： Dongsoo Daniel Koh , Ramon Alejandro Gomez , Francesco Gatta , Harold Raymond Whitehead , Donald G. McMullin
发明人： Dongsoo Daniel Koh , Ramon Alejandro Gomez , Francesco Gatta , Harold Raymond Whitehead , Donald G. McMullin
CPC分类号： H04B17/0085 , H04B17/327 , H04W52/143 , H04W52/245
摘要： An apparatus and method is disclosed to calculate the actual received desired channel power from the downstream transmit power of a Cable Modem Termination System (CMTS) when operating at the nominal line voltage and/or at the normal room temperature as per the DOCSIS specification. A Set-top Device produces a Downstream Power Management (DPM) gain measurement signal having a known power level. The Set-top Device embeds the DPM gain measurement signal onto a received downstream multi-channel communication signal. After embedding the DPM gain measurement signal onto the downstream multi-channel communication signal, the Set-top Device downconverts the combined DPM gain measurement signal and downstream multi-channel communication signal to recover one or more communication channels containing information of a broadcast. The Set-top Device measures a power level of a representation of the DPM gain measurement signal embedded within the one or more communication channels containing the information of the broadcast to determine a Set-top Device gain. The Set-top Device measures a power level of the one or more communication channels containing the information of the broadcast. The Set-top Device calculates the actual received desired channel power from the downstream transmit power of the CMTS based on the Set-top Device gain and the power level of the one or more communication channels containing the information of the broadcast.
摘要翻译： 公开了一种装置和方法，用于当根据DOCSIS规范在标称线路电压和/或正常室温下工作时从电缆调制解调器终端系统（CMTS）的下行发射功率计算实际接收的所需信道功率。 机顶装置产生具有已知功率电平的下行电力管理（DPM）增益测量信号。 机顶装置将DPM增益测量信号嵌入到接收到的下行多信道通信信号。 在将DPM增益测量信号嵌入下游多信道通信信号之后，机顶装置将组合的DPM增益测量信号和下行多信道通信信号下变频，以恢复包含广播信息的一个或多个通信信道。 机顶装置测量嵌入在包含广播信息的一个或多个通信信道内的DPM增益测量信号的表示的功率电平，以确定机顶设备增益。 机顶装置测量包含广播信息的一个或多个通信信道的功率电平。 机顶装置基于机顶设备增益和包含广播信息的一个或多个通信信道的功率电平，从CMTS的下行发射功率计算实际接收的所需信道功率。
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2.发明授权公开(公告)号：US07702306B2
公开(公告)日：2010-04-20
申请号：US10649807
申请日：2003-08-28
IPC分类号： H04B17/00
CPC分类号： H04B1/28
摘要： An apparatus and method for local oscillator calibration compensates for filter passband variation in a mixer circuit, such as a receiver circuit. The receiver includes at least a mixer circuit and a filter coupled to the output of the mixer. During operation, the mixer mixes an RF input signal with a first local oscillator (LO) signal to frequency translate a selected channel in the RF input signal into the passband of the filter. During a calibration mode, the RF input signal is disabled, and the first LO signal is injected into the filter input by leaking the first LO signal through the mixer circuit. The frequency of the LO signal is then swept over a frequency bandwidth that is sufficiently wide so that the actual passband is detected by measuring the signal amplitude at the output of the bandpass filter, thereby determining any variation in the passband of the filter from the expected passband. Once the actual passband is determined, then the frequency of the first local oscillator signal is adjusted or tuned to compensate for any frequency shift of the actual passband compared to the expected passband. Therefore, the selected channel is up-converted into the center of the actual passband of the bandpass filter and will not fall outside the passband. This enables the passband of the bandpass filter to be narrowed, as compared with conventional receivers that do not utilize this calibration procedure. For example, the bandpass filter can be narrowed to one or two channels wide.
摘要翻译： 用于本地振荡器校准的装置和方法补偿诸如接收机电路的混频器电路中的滤波器通带变化。 接收器至少包括混频器电路和耦合到混频器输出端的滤波器。 在操作期间，混频器将RF输入信号与第一本地振荡器（LO）信号混频，以将RF输入信号中的选定信道频率转换成滤波器的通带。 在校准模式期间，RF输入信号被禁止，并且通过将第一LO信号泄漏通过混频器电路将第一LO信号注入滤波器输入。 然后将LO信号的频率扫过足够宽的频带宽度，以便通过测量带通滤波器输出端的信号振幅来检测实际通带，从而根据预期的方式确定滤波器通带的任何变化 通带。 一旦确定了实际通带，则调整或调谐第一本地振荡器信号的频率，以补偿与预期通带相比实际通带的任何频移。 因此，所选通道被上变频为带通滤波器的实际通带的中心，不会落在通带外。 与使用该校准程序的常规接收器相比，这使带通滤波器的通带变窄。 例如，带通滤波器可以变窄到一个或两个通道宽。
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3.发明授权Method and system for detecting digital QAM, VSB and analog TV signals 失效用于检测数字QAM，VSB和模拟电视信号的方法和系统公开(公告)号：US07265793B2
公开(公告)日：2007-09-04
申请号：US10864120
申请日：2004-06-09
IPC分类号： H04N7/084
CPC分类号： H04N5/4401 , H04N5/46 , H04N7/106 , H04N21/42638 , H04N21/4382
摘要： A method and system is provided, which may detect digital QAM, VSB and analog TV signals in a faster and more efficient manner than conventional systems. The system and method may be deployed in, for example, cable TV set-top boxes, cable TV modems and television set receivers, which may be coupled to a cable TV or off-the-air terrestrial network. Power measurements of the RF carriers found in a cable TV channel may be utilized to determine whether a digital QAM signal, digital VSB signal, or an analog signal is present in a TV channel. In this regard, it is not necessary for a receiver to demodulate, lock, synchronize, decode and/or validate any video or audio information or digital bit stream in order to detect digital QAM, digital VSB and analog TV signals, or not signal at all. Accordingly, the process of detecting digital QAM, digital VSB and analog TV signals is shortened and simplified.
摘要翻译： 提供了一种方法和系统，可以以比传统系统更快更有效的方式检测数字QAM，VSB和模拟电视信号。 该系统和方法可以部署在例如可以耦合到有线电视或空中地面网络的有线电视机顶盒，有线电视调制解调器和电视机接收机中。 可以利用在有线TV信道中发现的RF载波的功率测量来确定数字QAM信号，数字VSB信号或模拟信号是否存在于TV信道中。 在这方面，接收机不需要解调，锁定，同步，解码和/或验证任何视频或音频信息或数字比特流，以便检测数字QAM，数字VSB和模拟TV信号，或者不在 所有。 因此，对数字QAM，数字VSB和模拟电视信号进行检测的过程被简化和简化。
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4.发明授权Apparatus, system, and method for amplifying a signal, and applications thereof 有权用于放大信号的装置，系统和方法及其应用公开(公告)号：US07034610B2
公开(公告)日：2006-04-25
申请号：US10861379
申请日：2004-06-07
申请人： Stephen A. Jantzi , Anilkumar V. Tammineedi , Jungwoo Song , Lawrence M. Burns , Donald G. McMullin , Agnes N. Woo
发明人： Stephen A. Jantzi , Anilkumar V. Tammineedi , Jungwoo Song , Lawrence M. Burns , Donald G. McMullin , Agnes N. Woo
IPC分类号： H03F1/14
CPC分类号： H03G3/001 , H03G1/0088
摘要： An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.
摘要翻译： 上游放大器集成在具有数模转换器（DAC）的基板上，以形成集成电路。 在一个实施例中，低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中，通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声，时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。
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公开(公告)号：US08732788B2
公开(公告)日：2014-05-20
申请号：US11133237
申请日：2005-05-20
IPC分类号： H04N7/16
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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6.发明授权公开(公告)号：US08334721B2
公开(公告)日：2012-12-18
申请号：US13226233
申请日：2011-09-06
申请人： Stephen A. Jantzi , Anilkumar V. Tammineedi , Jungwoo Song , Lawrence M. Burns , Donald G. McMullin , Agnes N. Woo
发明人： Stephen A. Jantzi , Anilkumar V. Tammineedi , Jungwoo Song , Lawrence M. Burns , Donald G. McMullin , Agnes N. Woo
IPC分类号： H03F1/14
CPC分类号： H03G3/001 , H03G1/0088
摘要： An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.
摘要翻译： 上游放大器集成在具有数模转换器（DAC）的基板上，以形成集成电路。 在一个实施例中，低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中，通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声，时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。
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公开(公告)号：US08578434B2
公开(公告)日：2013-11-05
申请号：US11133275
申请日：2005-05-20
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。
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8.发明申请公开(公告)号：US20120086592A1
公开(公告)日：2012-04-12
申请号：US13226233
申请日：2011-09-06
申请人： Stephen A. Jantzi , Anilkumar V. Tammineedi , Jungwoo Song , Lawrence M. Burns , Donald G. McMullin , Anges N. Woo
发明人： Stephen A. Jantzi , Anilkumar V. Tammineedi , Jungwoo Song , Lawrence M. Burns , Donald G. McMullin , Anges N. Woo
IPC分类号： H03M1/66
CPC分类号： H03G3/001 , H03G1/0088
摘要： An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.
摘要翻译： 上游放大器集成在具有数模转换器（DAC）的基板上，以形成集成电路。 在一个实施例中，低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中，通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声，时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。
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9.发明授权公开(公告)号：US08013768B2
公开(公告)日：2011-09-06
申请号：US10163313
申请日：2002-06-07
申请人： Stephen A Jantzi , Anilkumar V Tammineedi , Jungwoo Song , Lawrence M Burns , Donald G McMullin , Agnes N Woo
发明人： Stephen A Jantzi , Anilkumar V Tammineedi , Jungwoo Song , Lawrence M Burns , Donald G McMullin , Agnes N Woo
IPC分类号： H03M1/66
CPC分类号： H03G3/001 , H03G1/0088
摘要： An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.
摘要翻译： 上游放大器集成在具有数模转换器（DAC）的基板上，以形成集成电路。 在一个实施例中，低通滤波器也集成在基板上。 上游放大器的输出信号电平是可控的。 在实施例中，通过改变DAC的偏置电流对上游放大器的输出信号电平进行微调。 软件控制位用于在上电操作模式和掉电操作模式之间切换。 上游放大器以突发模式发送。 上游放大器的功耗随放大器的输出信号电平而变化。 在上游放大器的正和负路径之间达到高度的匹配。 这提供了诸如衬底噪声，时钟刺激和由增益变化引起的毛刺等共模干扰的高抗扰性。
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公开(公告)号：US20100261446A1
公开(公告)日：2010-10-14
申请号：US12724150
申请日：2010-03-15
IPC分类号： H04B17/00
CPC分类号： H04B1/28
摘要： An apparatus and method for local oscillator calibration compensates for filter passband variation in a mixer circuit, such as a receiver circuit. The receiver includes at least a mixer circuit and a filter coupled to the output of the mixer. During operation, the mixer mixes an RF input signal with a first local oscillator (LO) signal to frequency translate a selected channel in the RF input signal into the passband of the filter. During a calibration mode, the RF input signal is disabled, and the first LO signal is injected into the filter input by leaking the first LO signal through the mixer circuit. The frequency of the LO signal is then swept over a frequency bandwidth that is sufficiently wide so that the actual passband is detected by measuring the signal amplitude at the output of the bandpass filter, thereby determining any variation in the passband of the filter from the expected passband. Once the actual passband is determined, then the frequency of the first local oscillator signal is adjusted or tuned to compensate for any frequency shift of the actual passband compared to the expected passband. Therefore, the selected channel is up-converted into the center of the actual passband of the bandpass filter and will not fall outside the passband. This enables the passband of the bandpass filter to be narrowed, as compared with conventional receivers that do not utilize this calibration procedure. For example, the bandpass filter can be narrowed to one or two channels wide.
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