H04N2005/91378 - CPC Classification Index

ClassID:

229746 ⎘

H04N2005/91378 - CPC Classification

Classification description:

Details of television systems; Television signal recording; Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video line number being modulated

Recent Application in this class:

20120321279

2012-12-20

METHOD AND APPARATUS FOR PROVIDING AN INTERACTIVE AND OR ELECTRONIC PROGRAMMING GUIDE

20110069233

2011-03-24

Method and apparatus for inducing and or reducing geometric distortions in a display via positive going pulses

20100071073

2010-03-18

Techniques for shuffling video information

20100021133

2010-01-28

METHOD FOR COPY PROTECTION FOR VIDEO SIGNAL WITH ADDED PULSES

20080239159

2008-10-02

Video content identification using scene change signatures from downscaled images

20080025696

2008-01-31

VIDEO COPY PROTECTION PROCESS ENHANCEMENT TO INTRODUCE HORIZONTAL AND VERTICAL PICTURE DISTORTIONS

20070211899

2007-09-13

Copy protection for video signal using narrowed horizontal synchronization signals

20070211898

2007-09-13

Copy protection for video signal using added negative amplitude pulse

20070206794

2007-09-06

Copy protection for video signal added pulses

#10

20070006271

2007-01-04

Techniques for shuffling video information

#11

20060045266

2006-03-02

Copy protection for video signal using narrowed horizontal synchronization signals and amplitude modulation