×

Upward-joining-noise decreasing method and apparatus

  • US 6,728,968 B1
  • Filed: 03/09/2000
  • Issued: 04/27/2004
  • Est. Priority Date: 06/17/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for decreasing upward-joining-noise in a two-way communication system connected by a plurality of transmission lines between a center device and a plurality of subscriber terminals, said upward-joining-noise decreasing method comprising the steps of:

  • in an upward-signal-inputting position of said center device, (a) measuring a desired to undesired signal ratio of each of a plurality of upward signals inputted from the plurality of transmission lines;

    (b) determining whether said measured desired to undesired signal ratio of each inputted upward signal is greater than a predetermined value;

    (c) controlling a an output level for each inputted upward signal based on a result obtained from said determining step (b); and

    (d) adjusting said output level for each inputted upward signal according to said controlling step (c).

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×