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1. 发明授权

US07535976B2 Apparatus and method for integration of tuner functions in a digital receiver 有权
标题翻译：在数字接收机中集成调谐器功能的装置和方法
公开(公告)号：US07535976B2
公开(公告)日：2009-05-19
申请号：US10902477
申请日：2004-07-30
申请人： Steven Jaffee , Donald McMullin , Ramon Gomez
发明人： Steven Jaffee , Donald McMullin , Ramon Gomez
IPC分类号： H03D3/18
CPC分类号： H04L27/38 , H03D3/009 , H03J1/005 , H04L2027/0016
摘要： A receiver to process a RF input signal having a plurality of channels includes a direct down conversion circuit, a demodulation circuit, and a local oscillator circuit. The direct down conversion circuit provides a downconverted signal based on the RF input signal and a local oscillator signal. The demodulation circuit receives the downconverted signal and provides a demodulated signal. The local oscillator circuit sets a frequency of the local oscillator signal based on a selected channel of the plurality of channels.
摘要翻译：用于处理具有多个通道的RF输入信号的接收器包括直接下变频电路，解调电路和本地振荡器电路。直接下变频电路基于RF输入信号和本地振荡器信号提供下变频信号。解调电路接收下变频信号并提供解调信号。本地振荡器电路基于多个信道的所选信道来设置本地振荡器信号的频率。

2. 发明申请

US20050179818A1 Method and system for detecting digital QAM, VSB and analog TV signals 失效
标题翻译：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：US20050179818A1
公开(公告)日：2005-08-18
申请号：US10864120
申请日：2004-06-09
申请人： Jorge Wong , Donald McMullin , Frederick Walls , Thomas Spieker
发明人： Jorge Wong , Donald McMullin , Frederick Walls , Thomas Spieker
IPC分类号： H04N5/44 , H04N5/46 , 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。

3. 发明授权

US06586996B2 Method and system for producing a drive signal for a current steering amplifier 有权
标题翻译：用于产生用于当前转向放大器的驱动信号的方法和系统
公开(公告)号：US06586996B2
公开(公告)日：2003-07-01
申请号：US10214091
申请日：2002-08-08
申请人： Adel Fanous , Leonard Dauphinee , Lawrence M. Burns , Donald McMullin
发明人： Adel Fanous , Leonard Dauphinee , Lawrence M. Burns , Donald McMullin
IPC分类号： H03F345
CPC分类号： H03F3/45183 , H03F3/45201 , H03F3/45475 , H03F2200/294 , H03F2200/372 , H03F2203/45302 , H03F2203/45311 , H03F2203/45464 , H03F2203/45466 , H03F2203/45638 , H03F2203/45696 , H03G1/0029 , H03G3/3036 , H03G3/3052
摘要： Provided is a method and system for producing a drive signal for a current steering amplifier. An exemplary method comprises receiving a supply voltage signal and a differential input signal as a circuit input. A differential amplifier drive signal is produced in response to the received supply voltage signal, the received differential input signal, and the received differential control signal. The received differential input signal is adjusted to a value where magnitudes of negative and positive components of the differential control signal become equal to one another and are within a predetermined amount of a magnitude of the supply voltage signal.
摘要翻译：提供了一种用于产生用于当前转向放大器的驱动信号的方法和系统。一种示例性方法包括接收电源电压信号和差分输入信号作为电路输入。响应于所接收的电源电压信号，接收的差分输入信号和接收的差分控制信号产生差分放大器驱动信号。接收到的差分输入信号被调整为差分控制信号的负分量和正分量的大小变得彼此相等并且在电源电压信号的大小的预定量内的值。

4. 发明授权

US07579912B2 Method and system for multiple tuner application using a low noise broadband distribution amplifier 有权
标题翻译：使用低噪声宽带分配放大器的多调谐器应用的方法和系统
公开(公告)号：US07579912B2
公开(公告)日：2009-08-25
申请号：US10214097
申请日：2002-08-08
申请人： Adel Fanous , Leonard Dauphinee , Lawrence M Burns , Donald McMullin
发明人： Adel Fanous , Leonard Dauphinee , Lawrence M Burns , Donald McMullin
IPC分类号： H04B1/18 , H04B7/00 , H04B1/26
CPC分类号： H03F3/45183 , H03F3/45201 , H03F3/45475 , H03F2200/294 , H03F2200/372 , H03F2203/45302 , H03F2203/45311 , H03F2203/45464 , H03F2203/45466 , H03F2203/45638 , H03F2203/45696 , H03G1/0029 , H03G3/3036 , H03G3/3052
摘要： An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals, each substantially matching the input signal. Also included is a first gain control device having a number of gain input ports respectively coupled to the first output ports and a gain output port coupled to at least one of the first input ports. The first gain control device is configured to control a gain of the first amplification module. Next, a number of second amplification modules corresponding to the number of output signals has a number of second input ports respectively coupled to the first output ports. Each second amplification module is configured to receive a control signal from the second gain control device, provide second stage amplification to a corresponding one of the number of output signals based upon the control signal and produce an amplified output signal.
摘要翻译：主动分路器电路装置包括具有多个第一输入端口和第一输出端口的第一放大模块。第一放大模块被配置为向接收到的输入信号提供第一级放大，并且从放大的输入信号产生多个输出信号，每个输出信号基本上匹配输入信号。还包括具有分别耦合到第一输出端口的多个增益输入端口和耦合到至少一个第一输入端口的增益输出端口的第一增益控制装置。第一增益控制装置被配置为控制第一放大模块的增益。接下来，对应于输出信号数量的多个第二放大模块具有分别耦合到第一输出端口的多个第二输入端口。每个第二放大模块被配置为从第二增益控制装置接收控制信号，基于控制信号向输出信号的数量对应的一个提供第二级放大，并产生放大的输出信号。

5. 发明申请

US20080018790A1 Method and System for Detecting Digital QAM, VSB and Analog TV Signals 有权
标题翻译：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：US20080018790A1
公开(公告)日：2008-01-24
申请号：US11832383
申请日：2007-08-01
申请人： Jorge Wong , Donald McMullin , Frederick Walls , Thomas Spieker
发明人： Jorge Wong , Donald McMullin , Frederick Walls , Thomas Spieker
IPC分类号： H04N7/084
CPC分类号： H04N5/4401 , H04N5/46 , H04N7/106 , H04N21/42638 , H04N21/4382
摘要： System and methods for processing signals in a television system are disclosed and may include measuring relative power of RF carriers over a full bandwidth of one or more received TV channels. The method may also include determining based on the measured relative power, whether the one or more received TV channels includes a digital component or an analog component without demodulating the received TV channel. It may be determined whether the one or more received TV channels includes a digital component or an analog component without synchronizing and/or decoding the one or more received TV channels. The method may further include tuning to the one or more received TV channels. It may be determined whether an applied power gain for the one or more received TV channels is a maximum power gain.
摘要翻译：公开了用于处理电视系统中的信号的系统和方法，并且可以包括在一个或多个接收到的电视频道的全带宽上测量RF载波的相对功率。该方法还可以包括基于所测量的相对功率来确定一个或多个接收的TV信道是否包括数字分量或模拟分量，而不解调所接收的TV频道。可以确定一个或多个接收的TV频道是否包括数字分量或模拟分量，而不同步和/或解码所接收的一个或多个TV频道。该方法还可以包括调谐到一个或多个接收的TV信道。可以确定一个或多个接收到的TV信道的所施加的功率增益是否是最大功率增益。

6. 发明申请

US20070026831A1 Apparatus and method to provide a local oscillator signal 有权
标题翻译：提供本地振荡器信号的装置和方法
公开(公告)号：US20070026831A1
公开(公告)日：2007-02-01
申请号：US11540662
申请日：2006-10-02
申请人： Steven Jaffe , Donald McMullin , Ramon Gomez
发明人： Steven Jaffe , Donald McMullin , Ramon Gomez
IPC分类号： H04B7/00
CPC分类号： H04B1/28 , H04B1/0014 , H04B1/0032 , H04B1/0039
摘要： An apparatus provides a local oscillator signal based on a selected channel of an RF input signal. For example, the apparatus can set a frequency of the local oscillator signal based on the selected channel. Digital circuitry can be used to generate the local oscillator signal. For instance, the digital circuitry can provide a digital representation of the local oscillator signal. A DAC can convert the digital representation to an analog signal. Other circuitry can provide first and second quadrature components of the local oscillator signal, based on the analog signal.
摘要翻译：一种装置基于RF输入信号的所选择的信道提供本地振荡器信号。例如，该装置可以基于所选择的信道来设置本地振荡器信号的频率。数字电路可用于产生本地振荡器信号。例如，数字电路可以提供本地振荡器信号的数字表示。 DAC可以将数字表示转换为模拟信号。其他电路可以基于模拟信号提供本地振荡器信号的第一和第二正交分量。

7. 发明申请

US20060007999A1 Method and system for enhancing image rejection in communications receivers using test tones and a baseband equalizer 审中-公开
标题翻译：用于增强使用测试音和通信基带均衡器的通信接收机中的图像抑制的方法和系统
公开(公告)号：US20060007999A1
公开(公告)日：2006-01-12
申请号：US11029733
申请日：2005-01-05
申请人： Ramon Gomez , Donald McMullin
发明人： Ramon Gomez , Donald McMullin
IPC分类号： H03H7/30
CPC分类号： H04B1/30
摘要： Certain embodiments of the invention provide a method and system for enhancing image rejection in communications receivers. A test tone signal may be injected into a receiver. A quadrature error in an in-phase (I) channel and a quadrature (Q) channel of the receiver may be estimated based on the injecting of the test tone signal into the receiver. A plurality of equalizer coefficients may be adjusted to correct the estimated quadrature error in the I channel and the Q channel of the receiver. A corrected I channel and a corrected Q channel may be generated corresponding to the I channel and the Q channel in the receiver based on the adjusting of the equalizer coefficients.
摘要翻译：本发明的某些实施例提供了一种用于增强通信接收机中的镜像抑制的方法和系统。测试音信号可以被注入接收机。可以基于将测试音信号注入到接收机中来估计接收机的同相（I）信道和正交（Q）信道中的正交误差。可以调整多个均衡器系数以校正接收机的I信道和Q信道中的估计的正交误差。可以基于均衡器系数的调整，对应于接收机中的I信道和Q信道来生成校正的I信道和校正的Q信道。

8. 发明授权

US06911865B2 Method and system for producing a drive signal for a current steering amplifier 有权
标题翻译：用于产生用于当前转向放大器的驱动信号的方法和系统
公开(公告)号：US06911865B2
公开(公告)日：2005-06-28
申请号：US10909097
申请日：2004-08-02
申请人： Adel Fanous , Leonard Dauphinee , Lawrence M. Burns , Donald McMullin
发明人： Adel Fanous , Leonard Dauphinee , Lawrence M. Burns , Donald McMullin
IPC分类号： H03F3/45 , H03G1/00 , H03G3/30
CPC分类号： H03F3/45183 , H03F3/45201 , H03F3/45475 , H03F2200/294 , H03F2200/372 , H03F2203/45302 , H03F2203/45311 , H03F2203/45464 , H03F2203/45466 , H03F2203/45638 , H03F2203/45696 , H03G1/0029 , H03G3/3036 , H03G3/3052
摘要： Provided is a method and system for producing a drive signal for a current steering amplifier. An exemplary method comprises receiving a supply voltage signal and a differential input signal as a circuit input. A differential amplifier drive signal is produced in response to the received supply voltage signal, the received differential input signal, and the received differential control signal. The received differential input signal is adjusted to a value where magnitudes of negative and positive components of the differential control signal become equal to one another and are within a predetermined amount of a magnitude of the supply voltage signal.
摘要翻译：提供了一种用于产生用于当前转向放大器的驱动信号的方法和系统。一种示例性方法包括接收电源电压信号和差分输入信号作为电路输入。响应于所接收的电源电压信号，接收的差分输入信号和接收的差分控制信号产生差分放大器驱动信号。接收到的差分输入信号被调整为差分控制信号的负分量和正分量的大小变得彼此相等并且在电源电压信号的大小的预定量内的值。

9. 发明申请

US20050048939A1 Apparatus and method for local oscillator calibration in mixer circuits 有权
标题翻译：混频器电路中本地振荡器校准的装置和方法
公开(公告)号：US20050048939A1
公开(公告)日：2005-03-03
申请号：US10649807
申请日：2003-08-28
申请人： Donald McMullin , Ramon Gomez , Lawrence Burns , Myles Wakayama
发明人： Donald McMullin , Ramon Gomez , Lawrence Burns , Myles Wakayama
IPC分类号： H04B1/28 , H04B1/18
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。

10. 发明申请

US20050041802A1 Systems and methods for digital upconversion for television signals 有权
标题翻译：电视信号数字上变频的系统和方法
公开(公告)号：US20050041802A1
公开(公告)日：2005-02-24
申请号：US10826281
申请日：2004-04-19
申请人： Ramon Gomez , Donald McMullin
发明人： Ramon Gomez , Donald McMullin
IPC分类号： H03D7/16 , H04L29/06 , H04N7/10 , H04K1/10
CPC分类号： H04L63/04 , H03D7/161 , H04L63/062 , H04L63/08 , H04L63/123 , H04N7/10
摘要： Systems and methods for digital upconversion of baseband television signals that can be used in cable television headend systems are provided. In one embodiment, the system includes a digital frequency adjustment system and a digital to analog conversion system. In a feature of the embodiment, the digital frequency adjustment system consists of set of digital upconversion and upsample elements that shift upwards the frequency of baseband signals. In a further feature of the embodiment, a tree structure of sets of upsample and upconversion elements is used. In another embodiment, the system includes digital and analog frequency adjustment systems in which the frequencies of the input signals are partially upshifted within both the digital and analog domains. Methods for digital upconversion of television signals are also provided.
摘要翻译：提供了可用于有线电视头端系统的基带电视信号的数字上变频的系统和方法。在一个实施例中，该系统包括数字频率调整系统和数模转换系统。在该实施例的特征中，数字频率调整系统包括一组数字上变频和向上移动基带信号频率的上采样元件。在该实施例的另一特征中，使用上采样和上转换元件组的树结构。在另一个实施例中，该系统包括数字和模拟频率调整系统，其中输入信号的频率在数字和模拟域内部分升高。还提供了电视信号数字上变频的方法。

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