METHOD AND APPARATUS FOR SYNTHESIZING A COPY PROTECTION OR CONTENT SIGNAL WITH IMPROVED PLAYABILITY OF A TV SET

Playability of a copy protected video signal is improved by reducing the darkening and or Venetian blind effects which tend to cause artifacts in a video signal display. To this end, the copy protection signal includes automatic gain control (AGC) signals or pulses in video lines in a portion of the...

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Bibliographic Details
Main Author QUAN RONALD
Format Patent
LanguageEnglish
Korean
Published 03.05.2010
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:Playability of a copy protected video signal is improved by reducing the darkening and or Venetian blind effects which tend to cause artifacts in a video signal display. To this end, the copy protection signal includes automatic gain control (AGC) signals or pulses in video lines in a portion of the active or viewable video field or frame, wherein the AGC pulses comprise non similar AGC signals from one video line to another video line. The dis-similar AGC pulses may include pulses which are deleted, blanked, attenuated, pulse width modified, modulated, etc. In addition, selected sync pulses may be pulse width, amplitude and or position modified.
Bibliography:Application Number: KR20107006176