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LEAKAGE DETECTION IN AN ALL-DIGITAL CABLE DISTRIBUTION NETWORK

  • US 20140105251A1
  • Filed: 10/16/2013
  • Published: 04/17/2014
  • Est. Priority Date: 10/16/2012
  • Status: Abandoned Application
First Claim
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1. A method for detecting a leak in an all-digital cable distribution network deployed in an area and comprising a head station for transmitting content to subscribers using channels that are encoded using quadrature amplitude modulation (QAM), the method comprising:

  • injecting at the head station, through the all-digital cable distribution network and using a direct sequence spread spectrum (DSSS) transmitter, a DSSS signal of a frequency range not overlapping with an adjacent QAM channel;

    travelling the area where the all-digital cable distribution network is deployed, with a DSSS receiver tuned to the DSSS transmitter at the head station;

    upon detecting, at the DSSS receiver, a DSSS signal leaking through the leak of the cable distribution network, collecting data indicative of a strength of the DSSS signal and associating the collected data with a location at which the DSSS signal was detected for generating leakage event data; and

    at least one of transmitting and storing the leakage event data for processing.

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