Device and system for reducing confluence noise

Details Device and system for reducing confluence noise Device and system for reducing confluence noise

2000-06-07

2009-08-11

Shang, Annan Q (Department: 2424)

Interactive video distribution systems

Video distribution system with upstream communication

Transmission network

C725S119000, C725S125000, C725S129000, C379S338000, C379S388070

Reexamination Certificate

active

07574730

ABSTRACT:
A system for reducing noise in a signal line, through which upward signals and downward signals are transmitted between a center and terminals, includes a noise-reduction device provided between the center and the terminals. The noise-reduction device attenuates the upward signals by an increased amount when a noise increase regarding the upward signals is detected on the signal line. The system further includes a noise-control device, provided at terminals, which boosts a transmission level of the upward signals by an amount compensating for the attenuation of the upward signals by the noise-reduction device.

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