Method and apparatus for protecting media content against unauthorized duplication
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United States of America Patent
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Jul 26, 2011
Grant Date -
Aug 14, 2008
app pub date -
Feb 9, 2007
filing date -
Feb 9, 2007
priority date (Note) -
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Abstract
Methods and apparatuses for media playback system are disclosed, including a signal source for providing electrical signal representing media content; a processing unit for processing signal from the signal source; a distorting unit for introducing distortion to signal from the processing unit; a transducer for converting the electrical signal from the distorting unit to energy representing the media content; and a connection link for transmitting the signal from the distorting unit to the transducer. The arrangement protects media content against unauthorized duplication by ripping-off the transmitting signal.
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