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1. 发明授权

US11303945B2 Detection of CPD from signals captured at remote PHY device 有权
公开(公告)号：US11303945B2
公开(公告)日：2022-04-12
申请号：US16819048
申请日：2020-03-14
申请人： ARCOM DIGITAL PATENT, LLC
发明人： Victor M. Zinevich
IPC分类号： G01R31/00 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04N21/24 , H04N21/61 , H04L43/50 , H04L43/04 , H04L12/28
摘要： A method and apparatus is disclosed for enabling synchronous capture of forward and return signals at a remote PHY device for detecting CPD. The remote PHY device provides the forward signal to and receives the return signal from a coaxial cable plant. The return signal contains an actual CPD signal generated by an interaction between the forward signal and a CPD source in the cable plant. The forward signal propagates from the remote PHY device to the CPD source and the actual CPD signal propagates from the CPD source to the remote PHY device all within a round-trip interval. The method comprises: capturing the forward signal from an output associated with the remote PHY device; generating from the forward signal a simulated CPD signal having frequencies in a return channel; band-limiting the simulated CPD signal to the return channel to produce a reference CPD signal; supplying the reference CPD signal to the remote PHY device; in the remote PHY device, receiving the reference CPD signal in the return channel; and (f) in the remote PHY device, capturing the return signal from the return channel over a capture duration of at least the round-trip interval. The reference CPD signal is used to detect the actual CPD signal from the return signal.

2. 发明申请

US20210044846A1 Detection of CPD using Leaked Forward Signal 有权
公开(公告)号：US20210044846A1
公开(公告)日：2021-02-11
申请号：US16564069
申请日：2019-09-09
申请人： ARCOM DIGITAL PATENT, LLC
发明人： Victor M. Zinevich
IPC分类号： H04N21/24 , H04N17/00 , H04N21/2385 , H04N21/242 , H04B10/2575 , H04N21/61
摘要： A method of detecting CPD in an HFC network is disclosed, where the network includes a return receiver, a cable plant, and a node. The node includes an optical receiver, optical transmitter, a diplexer having forward and return legs, a forward path defined between optical receiver and forward leg, and a return path defined between the optical transmitter and return leg. The optical receiver provides a forward signal to the cable plant and a portion of the forward signal leaks through the return leg and travels to the return receiver. The cable plant contains a CPD source which generates a CPD signal from the forward signal. The CPD signal travels to the return receiver. The method comprises: (a) operating the return receiver to synchronously capture the CPD signal and leaked portion of forward signal; (b) generating from the captured forward signal a reference signal, which substantially simulates the CPD signal; (c) performing a cross-correlation of the reference and captured CPD signals to produce a correlation peak; and (d) detecting the actual CPD signal from the correlation peak.

3. 发明授权

US11290761B2 Detection of CPD from signals captured at remote PHY device 有权
公开(公告)号：US11290761B2
公开(公告)日：2022-03-29
申请号：US16809671
申请日：2020-03-05
申请人： ARCOM DIGITAL PATENT, LLC
发明人： Victor M. Zinevich
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04N21/24 , H04N21/61 , H04L43/50 , H04L43/04 , H04L12/28
摘要： A method of detecting CPD in an HFC network that includes a remote PHY device (RPD) is disclosed. The RPD includes a transmitter, receiver, and diplexer having forward and return legs. The receiver receives a return signal from a cable plant via the return leg. The transmitter provides a forward signal to the cable plant via the forward leg. A portion of the forward signal leaks through the return leg and travels to the receiver. The return signal contains a CPD signal generated by the forward signal and a CPD source in the cable plant. The forward signal propagates from RPD to CPD source and CPD signal propagates from CPD source to RPD within a round-trip interval. The method comprises: (a) adjusting the capturing bandwidth of the receiver to include return and leaked forward signals; (b) operating receiver to capture return and leaked forward signals over a limited duration of at least the round-trip interval; and (c) detecting CPD signal by processing captured leaked forward and return signals.

4. 发明授权

US11082732B2 Detection of CPD using leaked forward signal 有权
公开(公告)号：US11082732B2
公开(公告)日：2021-08-03
申请号：US16564069
申请日：2019-09-09
申请人： ARCOM DIGITAL PATENT, LLC
发明人： Victor M. Zinevich
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L12/26 , H04L12/28 , H04N21/24 , H04N17/00 , H04N21/61 , H04N21/242 , H04B10/2575 , H04N21/2385
摘要： A method of detecting CPD in an HFC network is disclosed, where the network includes a return receiver, a cable plant, and a node. The node includes an optical receiver, optical transmitter, a diplexer having forward and return legs, a forward path defined between optical receiver and forward leg, and a return path defined between the optical transmitter and return leg. The optical receiver provides a forward signal to the cable plant and a portion of the forward signal leaks through the return leg and travels to the return receiver. The cable plant contains a CPD source which generates a CPD signal from the forward signal. The CPD signal travels to the return receiver. The method comprises: (a) operating the return receiver to synchronously capture the CPD signal and leaked portion of forward signal; (b) generating from the captured forward signal a reference signal, which substantially simulates the CPD signal; (c) performing a cross-correlation of the reference and captured CPD signals to produce a correlation peak; and (d) detecting the actual CPD signal from the correlation peak.

5. 发明申请

US20200221148A1 Detection of CPD from Signals Captured at Remote PHY Device 审中-公开
公开(公告)号：US20200221148A1
公开(公告)日：2020-07-09
申请号：US16819048
申请日：2020-03-14
申请人： ARCOM DIGITAL PATENT, LLC
发明人： Victor M. Zinevich
IPC分类号： H04N21/24 , H04L12/26 , H04N21/61
摘要： A method and apparatus is disclosed for enabling synchronous capture of forward and return signals at a remote PHY device for detecting CPD. The remote PHY device provides the forward signal to and receives the return signal from a coaxial cable plant. The return signal contains an actual CPD signal generated by an interaction between the forward signal and a CPD source in the cable plant. The forward signal propagates from the remote PHY device to the CPD source and the actual CPD signal propagates from the CPD source to the remote PHY device all within a round-trip interval. The method comprises: capturing the forward signal from an output associated with the remote PHY device; generating from the forward signal a simulated CPD signal having frequencies in a return channel; band-limiting the simulated CPD signal to the return channel to produce a reference CPD signal; supplying the reference CPD signal to the remote PHY device; in the remote PHY device, receiving the reference CPD signal in the return channel; and (f) in the remote PHY device, capturing the return signal from the return channel over a capture duration of at least the round-trip interval. The reference CPD signal is used to detect the actual CPD signal from the return signal.

6. 发明授权

US10616622B2 Detection of CPD from signals captured at remote PHY device 有权
公开(公告)号：US10616622B2
公开(公告)日：2020-04-07
申请号：US16125837
申请日：2018-09-10
申请人： ARCOM DIGITAL PATENT, LLC
发明人： Victor M. Zinevich
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/28 , H04N21/24 , H04N21/61 , H04L12/26
CPC分类号： H04N21/2402 , H04L43/04 , H04L43/50 , H04N21/615 , H04L12/2801
摘要： Synchronous capture of a forward signal and a related CPD signal at a remote PHY device (RPD) for detecting and locating CPD is disclosed. The RPD delivers the forward signal to a coaxial cable plant. The forward signal propagates from the RPD to a CPD source and the CPD signal propagates from the source to the RPD within a round-trip interval. The steps include: (a) capturing the forward signal from the RPD during the round-trip interval; (b) generating a reference signal, substantially simulating the CPD signal, from the forward signal; (c) supplying the reference signal to the RPD; (d) receiving the reference signal in the RPD via a return channel; and (e) capturing the CPD signal at the RPD in the return channel during the round-trip interval. Reference and actual CPD signals are processed as a combined return signal for detecting CPD.

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