Apparatus for controlling storage and playback of digital broadcasting contents
First Claim
1. An apparatus for controlling storage and playback of digital broadcasting contents in a transmitter of a digital broadcasting environment, comprising;
- an access control means for generating access control information for access control service and a control word;
a copy control information (CCI) generation means for generating copy control information;
a broadcasting flag (BF) generation means for generating broadcasting flag;
a retention information (RI) generation means for generating retention information;
a watermarking means for receiving the CCI, the BF and the RI and watermarking an uncompressed media signal with the CCI, the BF and the RI to thereby generate a watermarked media signal;
a media encoding means for compressing the watermarked media signal;
a multiplexing means for receiving and multiplexing the watermarked and compressed media signal, the access control information, the CCI, the BF, and the RI to thereby generate multiplexed transport stream; and
a scrambling means for scrambling the multiplexed transport stream based on the control word and transmitting the scrambled transport stream.
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Accused Products
Abstract
Provided is an apparatus for controlling storage and playback of digital broadcasting contents. The apparatus can control a broadcasting content to be recorded and stored, temporarily stored, and played back while protecting and managing it securely. The apparatus of the present research includes: a control information providing unit for generating control information for recording storage, temporary storage, and playback of a broadcasting content, using the control information as watermarking information, multiplexing and scrambling the broadcasting content including the control information, and outputting a scrambled transport; and a storing and playback unit for storing the broadcasting content by using the control information, comparing the control information stored together with the broadcasting content with control information added as watermarks, and determining whether to play back the broadcasting content.
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Citations
15 Claims
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1. An apparatus for controlling storage and playback of digital broadcasting contents in a transmitter of a digital broadcasting environment, comprising;
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an access control means for generating access control information for access control service and a control word;
a copy control information (CCI) generation means for generating copy control information;
a broadcasting flag (BF) generation means for generating broadcasting flag;
a retention information (RI) generation means for generating retention information;
a watermarking means for receiving the CCI, the BF and the RI and watermarking an uncompressed media signal with the CCI, the BF and the RI to thereby generate a watermarked media signal;
a media encoding means for compressing the watermarked media signal;
a multiplexing means for receiving and multiplexing the watermarked and compressed media signal, the access control information, the CCI, the BF, and the RI to thereby generate multiplexed transport stream; and
a scrambling means for scrambling the multiplexed transport stream based on the control word and transmitting the scrambled transport stream. - View Dependent Claims (2, 3, 4)
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5. An apparatus for controlling storage and playback of digital broadcasting contents in a receiver of a digital broadcasting environment, comprising;
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a personal information providing means for providing personal information to decode a scrambled transport stream;
a descrambling means for descrambling the scrambled transport stream based on the personal information;
a control information processing means for processing a copy control information (CCI), a broadcasting flag (BF), a retention information (RI), which are storage and playback control information included in the descrambled transport stream, and storing and playing back the broadcasting content;
an encrypting means for encrypting the broadcasting content to be stored;
a storing means for storing the encrypted broadcasting content;
a decrypting means for decrypting the stored broadcasting content;
a decoding means for decoding the descrambled and compressed transport stream; and
a playback allowing means for abstracting the CCI, the BF and the RI, which are watermarks, from the decoded transport stream, comparing the abstracted watermark information with the storage and playback control information, and determining whether to allow playback of the broadcasting content. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. An apparatus for storing and playing back digital broadcasting contents, comprising:
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a control information providing means for generating control information for recording storage, temporary storage, and playback of a broadcasting content, using the control information as watermarking information, multiplexing and scrambling the broadcasting content including the control information, and outputting a scrambled transport; and
a storing and playback means for storing the broadcasting content by using the control information, comparing the control information stored together with the broadcasting content with control information added as watermarks, and determining whether to play back the broadcasting content. - View Dependent Claims (13, 14, 15)
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Specification