Recording medium containing sample data and reproducing thereof
First Claim
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1. A method of reproducing data, comprising:
- checking whether a first control information required to decrypt encrypted digital content is present;
checking whether sample data associated with the encrypted digital content is present and capable of being reproduced without a second control information; and
reproducing the sample data without the first and second control information when the sample data present is capable of being reproduced without the second control information.
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Abstract
The present invention provides according to an embodiment a method of reproducing digital content, comprising the steps of: (a) reading a position information where a sample data is present, the sample data being same as a portion of digital content and not encrypted; and (b) reproducing the sample data based on the read position information without a key information, the key information required for decrypting an encrypted digital content.
39 Citations
3 Claims
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1. A method of reproducing data, comprising:
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checking whether a first control information required to decrypt encrypted digital content is present; checking whether sample data associated with the encrypted digital content is present and capable of being reproduced without a second control information; and reproducing the sample data without the first and second control information when the sample data present is capable of being reproduced without the second control information.
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2. An apparatus for reproducing data, comprising:
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a controller adapted to check whether a first control information required to decrypt encrypted digital content is present in the device; and a reproducing unit adapted to reproduce the encrypted digital content using the first control information if the first control information is present, wherein the controller is adapted to check whether sample data associated with the encrypted digital content is present and capable of being reproduced without a second control information so that the reproducing unit reproduces the sample data without the first and second control information.
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3. A computer readable medium recording software to perform a method for reproducing data, the method comprising:
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checking whether a first control information required to decrypt encrypted digital content is present; checking whether sample data associated with the encrypted digital content is present and capable of being reproduced without a second control information; and reproducing the sample data without the first and second control information when the sample data present is capable of being reproduced without the second control information.
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Specification