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    • 1. 发明授权
    • Bandpass component decimation and transmission of data in cable television digital return path
    • 有线电视数字返回路径中的带通分量抽取和数据传输
    • US08863217B2
    • 2014-10-14
    • US13170098
    • 2011-06-27
    • Gerald Francis Sage
    • Gerald Francis Sage
    • H04N7/173H04N5/00H04N7/20
    • H04N7/20H04N7/17309
    • A device for and a method of decreasing the data rate of a digital return path link in a Cable Television Hybrid Fiber-Coax system (CATV system) is disclosed. At the node of the CATV system, the bandwidth of the a digital data stream representative of an analog return signal is limited to a desired frequency band. The bandwidth-limited data stream is then digitally re-sampled at a predetermined multiple of a center frequency of the frequency band. The re-sampled data stream is then separated into two data streams. Then, these separate data streams are digitally decimated to a lower data rate, interleaved and serialized for transmission to a head end of the CATV system. A reverse process reconstructs the original analog return signal's signal components within the desired frequency band at the head end.
    • 公开了一种降低有线电视混合光纤同轴系统(CATV系统)中的数字返回路径链路的数据速率的装置和方法。 在CATV系统的节点处,表示模拟返回信号的数字数据流的带宽被限制到期望的频带。 然后,带宽限制数据流以频带的中心频率的预定倍数进行数字重采样。 然后将再采样的数据流分成两个数据流。 然后,这些单独的数据流被数字地抽取到较低的数据速率,交错和串行化以便传输到CATV系统的头端。 反向过程在头端重建原始模拟返回信号的期望频带内的信号分量。
    • 2. 发明申请
    • BANDPASS COMPONENT DECIMATION AND TRANSMISSION OF DATA IN CABLE TELEVISION DIGITAL RETURN PATH
    • 电缆电视数字返回路径中的数据分量分组和数据传输
    • US20110255878A1
    • 2011-10-20
    • US13170098
    • 2011-06-27
    • Gerald Francis Sage
    • Gerald Francis Sage
    • H04B10/06H04N7/26
    • H04N7/20H04N7/17309
    • A device for and a method of decreasing the data rate of a digital return path link in a Cable Television Hybrid Fiber-Coax system (CATV system) is disclosed. At the node of the CATV system, the bandwidth of the a digital data stream representative of an analog return signal is limited to a desired frequency band. The ba11dwidth-limited data stream is then digitally re-sampled at a predetermined multiple of a center frequency of the frequency band. The re-sampled data stream is then separated into two data streams. Then, these separate data streams are digitally decimated to a lower data rate, interleaved and serialized for transmission to a head end of the CATV system. A reverse process reconstructs the original analog return signal's signal components within the desired frequency band at the head end.
    • 公开了一种降低有线电视混合光纤同轴系统(CATV系统)中的数字返回路径链路的数据速率的装置和方法。 在CATV系统的节点处,表示模拟返回信号的数字数据流的带宽被限制到期望的频带。 然后,以频带的中心频率的预定倍数对ba11dwidth限制的数据流进行数字重采样。 然后将再采样的数据流分成两个数据流。 然后,这些单独的数据流被数字地抽取到较低的数据速率,交错和串行化以便传输到CATV系统的头端。 反向过程在头端重建原始模拟返回信号的期望频带内的信号分量。
    • 3. 发明授权
    • Bandpass component decimation and transmission of data in cable television digital return path
    • 有线电视数字返回路径中的带通分量抽取和数据传输
    • US07971225B2
    • 2011-06-28
    • US10218344
    • 2002-08-12
    • Gerald Francis Sage
    • Gerald Francis Sage
    • H04N7/173H04N5/00
    • H04N7/20H04N7/17309
    • A device for and a method of decreasing the data rate of a digital return path link in a Cable Television Hybrid Fiber-Coax system (CATV system) is disclosed. At the node of the CATV system, the bandwidth of the a digital data stream representative of an analog return signal is limited to a desired frequency band. The bandwidth-limited data stream is then digitally re-sampled at a predetermined multiple of a center frequency of the frequency band. The re-sampled data stream is then separated into two data streams. Then, these separate data streams are digitally decimated to a lower data rate, interleaved and serialized for transmission to a head end of the CATV system. A reverse process reconstructs the original analog return signal's signal components within the desired frequency band at the head end.
    • 公开了一种降低有线电视混合光纤同轴系统(CATV系统)中的数字返回路径链路的数据速率的装置和方法。 在CATV系统的节点处,表示模拟返回信号的数字数据流的带宽被限制到期望的频带。 然后,带宽限制数据流以频带的中心频率的预定倍数进行数字重采样。 然后将再采样的数据流分成两个数据流。 然后,这些单独的数据流被数字地抽取到较低的数据速率,交错和串行化以便传输到CATV系统的头端。 反向过程在头端重建原始模拟返回信号的期望频带内的信号分量。