Ingress noise control system and ingress noise blocking device

Details Ingress noise control system and ingress noise blocking device Ingress noise control system and ingress noise blocking device

2005-03-15

2005-03-15

Miller, John (Department: 2614)

Interactive video distribution systems

Video distribution system with upstream communication

Transmission network

C725S126000, C725S127000

Reexamination Certificate

active

06868552

ABSTRACT:
The present invention concerns an ingress noise control system and an ingress noise blocking device which are used in a cable system to suppress ingress noise. In the cable system providing two-way communication using different frequency bands for transmission of upstream and downstream signals, the ingress noise control system includes, within a distribution unit, a two-way amplification unit, etc. provided in an upstream signal transmission path, a synchronous detection controller6for synchronously detecting the upstream signal transmitted from terminal equipment and separated by a low-pass filter4in a second separation filter2, a gate switch circuit5which is turned on by the synchronous detection controller6to pass the upstream signal only when the upstream signal is synchronously detected, and an indicator7for indicating the on/off state of the gate switch circuit5.

REFERENCES:
patent: 4928272 (1990-05-01), Ohue
patent: 4982440 (1991-01-01), Dufresne et al.
patent: 5719792 (1998-02-01), Bush
patent: 5745836 (1998-04-01), Williams
patent: 5893024 (1999-04-01), Sanders et al.
patent: 5937330 (1999-08-01), Vince et al.
patent: 6094211 (2000-07-01), Baran et al.
patent: 6160990 (2000-12-01), Kobayashi et al.
patent: 6321384 (2001-11-01), Eldering
patent: 7-284083 (1995-10-01), None
patent: 7-307937 (1995-11-01), None
patent: 9-162788 (1997-06-01), None

Affiliated with

Also associated with

Rating

Ingress noise control system and ingress noise blocking device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ingress noise control system and ingress noise blocking device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ingress noise control system and ingress noise blocking device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3387523