CATV transmission system using scrambled signals

Details CATV transmission system using scrambled signals CATV transmission system using scrambled signals

1989-06-08

1991-04-16

Tarcza, Thomas H.

Cryptography

Key management

Having particular key generator

380 20, 358 86, 455 3, H04N 7167

Patent

active

050089340

ABSTRACT:
A CATV system includes a main head end as a system center and a plurality of subhead ends. A baseband TV signal is transmitted from the main head end to the subhead ends through optical fiber cables. A scrambling data generating means is disposed in the main head end to generate scrambling data and transmit those together with the TV signal. A scrambling means is disposed in each subhead end to perform a scrambling operation such that synchronization portions of a video signal is compressed on the basis of the scrambling data.

REFERENCES:
patent: 4716587 (1987-12-01), Fausone et al.
patent: 4769838 (1988-09-01), Hasegawa
patent: 4792971 (1988-12-01), Uemura
patent: 4794643 (1988-12-01), Saeki et al.
patent: 4839922 (1989-06-01), Imasaki et al.
patent: 4878245 (1989-10-01), Bradley et al.

Affiliated with

Also associated with

Rating

CATV transmission system using scrambled signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CATV transmission system using scrambled signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CATV transmission system using scrambled signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-427188