All-pass network for data transmission over a CATV system

Details All-pass network for data transmission over a CATV system All-pass network for data transmission over a CATV system

2004-08-03

2010-06-15

Lonsberry, Hunter B. (Department: 2421)

Interactive video distribution systems

Video distribution system components

Transmission network

C725S148000, C725S150000

Reexamination Certificate

active

07739719

ABSTRACT:
A cable system, and a method for configuring a path of a cable system, wherein the group delay caused by one or more amplifiers having diplex filter networks is substantially equalized over all frequencies within a predetermined band by the use of one or more all-pass delay equalizers. A method of configuring a path includes steps of determining a delay versus frequency characteristic of the path within the predetermined frequency band, and providing from one to a plurality of all-pass delay equalizers in the path, wherein a collective delay versus frequency characteristic of the all-pass delay equalizer(s) within a predetermined frequency band is a mirror image of that caused by the amplifier(s), such that all frequencies within the predetermined frequency band are delayed by substantially the same amount and hence all frequency components of a signal arrive at a receiver at substantially the same time.

REFERENCES:
patent: 3832647 (1974-08-01), Beurrier
patent: 3849744 (1974-11-01), Puruya
patent: 3868604 (1975-02-01), Tongue
patent: 5185793 (1993-02-01), Marland et al.
patent: 5432562 (1995-07-01), Van De Waterlaat et al.
patent: 5666365 (1997-09-01), Kostreski
patent: 5805983 (1998-09-01), Naidu et al.
patent: 6725462 (2004-04-01), Kaplan
patent: WO 01/50600 (2001-07-01), None
P. Bowron et al.; A Gain-Compensated Active Circuit for Higher-Frequency Delay Equalisation; Conference Proceedings 1998; pp. 363-367.
International Search Report for PCT Application No. PCT/US2005/026584; Filed Jul. 27, 2005; Date of Completion Feb. 15, 2006; Date of Mailing Feb. 28, 2006.

Affiliated with

Also associated with

Rating

All-pass network for data transmission over a CATV system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with All-pass network for data transmission over a CATV system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and All-pass network for data transmission over a CATV system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4163997