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Method of reducing upstream ingress noise in cable data system

  • US 20080168518A1
  • Filed: 01/05/2007
  • Published: 07/10/2008
  • Est. Priority Date: 01/05/2007
  • Status: Abandoned Application
First Claim
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1. A method of reducing upstream ingress noise in cable data system, comprising the steps of:

  • (1) providing a plurality of upstream ingress noise blocking systems, each of which is mounted between a headend of the cable data system and one of a plurality of user groups;

    (2) causing the upstream ingress noise blocking systems and the user groups to synchronously use an upstream channel of the headend;

    (3) causing the upstream ingress noise blocking systems to simultaneously monitor downstream broadcast signals independently transmitted from the headend to each of the user groups, wherein each of the downstream broadcast signals includes information about data uploading time for a corresponding one of the user groups; and

    an upstream channel connection time schedule being determined for the upstream ingress noise blocking systems and the user groups based on the data uploading time for each of the user groups; and

    (4) causing the upstream ingress noise blocking systems to separately connect the corresponding user groups to the upstream channel according to the upstream channel connection time schedule, so that data from each of the user groups may be uploaded to the headend.

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