Patent ID: 6553067
Filing Date: 2003-04-22
Classification: G06F,G11B,H04N

Abstract:
A data medium for transferring main data to a reproduction apparatus for reproduction by the reproduction apparatus, characterized in that:said data medium also transfers medium protection data which are specific to each of predetermined data pieces within said main data and are also conveyed by said data medium; said data medium also transfers protection position information which specifies a position of said predetermined data pieces within said main data at which to apply reproduction protection, said protection position information also being conveyed by said data medium; the reproduction apparatus generates apparatus protection data which comprise at least first apparatus protection data and second apparatus protection data, wherein said first apparatus protection data are specific to a region or country in which the reproduction apparatus is to be used, and said first apparatus protection data can not be modified by a user of the reproduction apparatus; and wherein said second apparatus protection data can be modified by the user to selectively define a plurality of protection levels including at least two levels which are respectively specific to adults and to children, and said medium protection data and apparatus protection data in combination specify a degree of restriction on said reproduction of the main data by the reproduction apparatus, wherein the combination of said medium protection data and said first apparatus protection data specifies that said main data are reproduced either in their entirety or not at all, and the combination of said medium protection data and said second apparatus protection data specifies that said main data are reproduced in their entirety, partially, or not at all.