Information recording device and information output device

A device for recording digital information inputted in an on-line, off-line, or broadcasting form on a copy target recording medium, wherein the digital information includes at least video information and/or audio information, the video information and/or the audio information being composed of a plurality of unit information, said information recording device comprising:

• decomposing means for decomposing the inputted digital information into the plurality of unit information;
• extracting means for extracting at least part of the plurality of unit information to be deteriorated in quality from the decomposed digital information;
• deteriorating means for deteriorating the quality of the unit information extracted by said extracting means;
• composing means for composing the digital information decomposed by said decomposing means to reconstruct recomposed digital information including the unit information deteriorated in quality;
• and
• writing means for writing said recomposed digital information produced by said composing means onto the copy target recording medium.

An information output device for deteriorating quality of digital information inputted in an on-line, off-line, or broadcasting form, wherein the digital information includes video information and/or audio information and parameters for reproducing the video information and/or the audio information as video and/or audio, said information output device comprising:

• decomposing means for decomposing the inputted digital information into one or a plurality of certain parts;
• extracting means for extracting a part of the parameters as a quality deterioration parameter from the digital information decomposed by said decomposing means,
• converting means for converting the quality deterioration parameter extracted by said extracting means into a value which deteriorates the quality of the digital information;
• composing means for composing the digital information decomposed by said decomposing means to reconstruct recomposed digital information including said value in a part of said recomposed digital information corresponding to the quality deterioration parameter;
• and
• output means for outputting said recomposed digital information produced by said composing means in the on-line, off-line or broadcasting form.

An information output device for deteriorating quality of digital information inputted in an on-line, off-line, or broadcasting form, wherein the digital information includes at least video information and/or audio information, the video information and/or the audio information being composed of a plurality of unit information, said information output device comprising:

• decomposing means for decomposing the input digital information into the plurality of unit information;
• extracting means for extracting at least part of the plurality of unit information whose quality is to be deteriorated from the decomposed digital information;
• deteriorating means for deteriorating the quality of the unit information extracted by said extracting means;
• composing means for composing the digital information decomposed by said decomposing means to reconstruct recomposed digital information including the unit information having its quality deteriorated;
• and
• output means for outputting said recomposed digital information produced by said composing means in the on-line, off-line or broadcasting form.