Non-copiable videotape recording system

Details Non-copiable videotape recording system Non-copiable videotape recording system

1982-07-21

1984-10-02

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358335, 358319, 358120, H04N 9491, H04N 591

Patent

active

044751290

ABSTRACT:
A non-copiable videotape recording system includes a synchro signal separator adapted to separate a horizontal and a vertical synchro signal from a synchro signal section of a video signal, a first-pulse generator adapted to generate a first pulse while the video signal is in the duration of the back porch which follows the horizontal synchro signal, wherein the first pulse has a narrower width than that of the back porch, a second-pulse generator adapted to generate a second pulse having a lower level than that of the first pulse while the video signal is in the duration of the back porch following the horizontal synchro signal, wherein the second pulse has a narrow width than that of the back porch and has a substantially equal pulse-area to that of the first pulse, and means for adding the first pulse and the second pulse alternately to the back porch of the video signal at predetermined time intervals.

REFERENCES:
patent: 4163253 (1979-07-01), Morio et al.
patent: 4213149 (1980-06-01), Janko

Affiliated with

Also associated with

Rating

Non-copiable videotape recording 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 Non-copiable videotape recording system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-copiable videotape recording system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-528863