Apparatus, method, and system for digital content and access protection
First Claim
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1. A method for providing an audio signal to a user, comprising:
- sampling said audio signal at a user specific sampling rate, thereby obtaining temporally organized sample amplitudes;
removing a timer interrelation between said temporally organized sample amplitudes, thereby obtaining sample amplitudes having no time interrelation;
transmitting said sample amplitudes having no time interrelation to said user; and
reconstructing said audio signal by inserting a user-specific sampling interval between successive ones of said sample amplitudes, said user-specific sampling interval corresponding to said user-specific sampling rate.
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Abstract
There is described a method for providing an audio signal to a user-end, comprising: modifying an amplitude of at least some bits of the audio signal using at least one user-specific series of bits, thereby obtaining a non-identical copy of the audio signal; transmitting the non-identical copy to the user-end; at the user-end, identifying the at least some bits within the non-identical copy; and restoring the amplitude of the at least some bits using the at least one user-specific series of bits, thereby reconstructing the audio signal.
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Citations
16 Claims
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1. A method for providing an audio signal to a user, comprising:
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sampling said audio signal at a user specific sampling rate, thereby obtaining temporally organized sample amplitudes; removing a timer interrelation between said temporally organized sample amplitudes, thereby obtaining sample amplitudes having no time interrelation; transmitting said sample amplitudes having no time interrelation to said user; and reconstructing said audio signal by inserting a user-specific sampling interval between successive ones of said sample amplitudes, said user-specific sampling interval corresponding to said user-specific sampling rate. - View Dependent Claims (2, 3, 4)
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5. A system for transferring an audio signal to a user, comprising:
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a first machine comprising a first memory, a first processor and first communication means, said first processor being adapted for sampling said audio signal at a user specific sampling rate in order to obtain temporally organized sample amplitudes and to remove a time interrelation between said temporally organized sample amplitudes in order to obtain sample amplitudes having no time interrelation; and a second machine comprising a second memory for storing a user-specific sampling interval, a second processor and second communication means and being in communication with said first machine, said second processor being adapted for reconstructing said audio signal by inserting said user-specific sampling interval between successive ones of said sample amplitudes having no time interrelation, said user-specific sampling interval corresponding to said user-specific sampling rate. - View Dependent Claims (6, 7, 8)
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9. A method for downloading an audio signal, comprising:
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receiving a non-identical copy of said audio signal, said non-identical copy comprising sample amplitudes having no time interrelation resulting from a sampling of said audio signal using a user specific sampling rate, thereby obtaining the sample amplitudes, and from a removal of the time interrelation between said sample amplitudes; and reconstructing said audio signal by inserting a user-specific sampling interval between successive ones of said sample amplitudes, said user-specific sampling interval corresponding to said user-specific sampling rate. - View Dependent Claims (10, 11, 12)
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13. A digital audio player comprising:
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communication means adapted to receive a non-identical copy of an audio signal comprising sample amplitudes having no time interrelation resulting from a sampling of said audio signal using a user specific sampling rate, thereby obtaining the sample amplitudes, and from a removal of the time interrelation between said sample amplitudes; a memory for storing a user-specific sampling interval corresponding to said user-specific sampling rate; a reconstruction module adapted to reconstruct a digital reconstructed copy of said audio signal by inserting said user-specific sampling interval between successive ones of said sample amplitudes; and a digital-to-analog converter adapted to convert said digital reconstructed copy in an analog audio signal. - View Dependent Claims (14, 15, 16)
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Specification