Process for scrambling and unscrambling television pictures

Details Process for scrambling and unscrambling television pictures Process for scrambling and unscrambling television pictures

H - Electricity

04

N

350/29

H04N 7/167 (2006.01) H04N 7/169 (2006.01)

Patent

CA 1323925

ABSTRACT The useful signal of a sampled video line is, at least partially, spliced into two adjacent segments (AB, BC), each of these having at least two samples. The splicing point (B) between the two segments is defined in a pseudo random manner synchronous at transmission and reception. Upon transmission, at each line and in a pseudo-random manner, one of two possible scrambling schemes is selected. The first scheme involves local flipping over of the second segment, and the second scheme involves flipping over of the second segment followed by a permutation with the first segment. Upon reception, the inverse processing of that at transmission is applied in order to reintroduce intelligibility to the video signal, (i.e. locally flipping over the segments received or flipping over of the first segment received followed by the permutation with the second segment received). The process applies to a MAC signal.

512477

Affiliated with

Also associated with

Rating

Process for scrambling and unscrambling television pictures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for scrambling and unscrambling television pictures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for scrambling and unscrambling television pictures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1177431