Broadcasting server system for protecting and managing digital broadcasting contents and an operation method thereof
First Claim
1. A broadcasting server system for protecting and managing digital broadcasting contents, comprising:
- a control means for generating access control information and a control word based on subscriber information, the access control information including CAT, entitlement control message (ECM) and entitlement management message (EMM);
an additional data generation means for generating additional data including use control metadata, tool information metadata, and content purchase information metadata to protect and manage the digital broadcasting contents;
a watermarking means for receiving an identification of a broadcasting content, which is referred to as a content ID, and the use control metadata, and watermarking an audio/video (A/V) media signal by using the content ID and the use control metadata as watermarks, the use control metadata including copy control information (CCI), broadcasting flag (BF) and retention information (RI);
a media encoding means for compressing the watermarked A/V media signal;
an encrypting means for encrypting the compressed A/V media signal;
a multiplexing means for receiving and multiplexing the compressed and encrypted A/V media signal to thereby output a media transport stream;
a re-multiplexing means for receiving and re-multiplexing the media transport stream, the additional data and the access control information to thereby output a re-multiplexed signal; and
a scrambling means for scrambling the re-multiplexed signal by using the control word.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a broadcasting server system that can have many protection and management tools applied thereto, other than conventional access control tools and supplies information on the applied protection and management tools, information on the control over the use of the contents, and information on the purchase of the contents, an operation method thereof, and a computer-readable recording medium for recording a program that implements the method. The broadcasting server system includes: a control unit for generating access control information and a control word based on subscriber information; an additional data generation unit; a watermarking unit; a media encoding unit; an encrypting unit; a multiplexing unit; a re-multiplexing unit; and a scrambling unit.
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Citations
13 Claims
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1. A broadcasting server system for protecting and managing digital broadcasting contents, comprising:
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a control means for generating access control information and a control word based on subscriber information, the access control information including CAT, entitlement control message (ECM) and entitlement management message (EMM);
an additional data generation means for generating additional data including use control metadata, tool information metadata, and content purchase information metadata to protect and manage the digital broadcasting contents;
a watermarking means for receiving an identification of a broadcasting content, which is referred to as a content ID, and the use control metadata, and watermarking an audio/video (A/V) media signal by using the content ID and the use control metadata as watermarks, the use control metadata including copy control information (CCI), broadcasting flag (BF) and retention information (RI);
a media encoding means for compressing the watermarked A/V media signal;
an encrypting means for encrypting the compressed A/V media signal;
a multiplexing means for receiving and multiplexing the compressed and encrypted A/V media signal to thereby output a media transport stream;
a re-multiplexing means for receiving and re-multiplexing the media transport stream, the additional data and the access control information to thereby output a re-multiplexed signal; and
a scrambling means for scrambling the re-multiplexed signal by using the control word. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for operating a broadcasting server system for protecting and managing digital broadcasting contents, the method comprising the steps of:
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a) generating access control information and a control word based on subscriber information, the access control information including CAT, entitlement control message (ECM) and entitlement management message (EMM);
b) generating additional data including use control metadata, tool information metadata and content purchase information metadata to protect and manage the digital broadcasting contents;
c) receiving an identification of a broadcasting content, which is referred to as a content ID, and the use control metadata and watermarking an audio/video (A/V) media signal by using the content ID and the use control metadata as watermarks, the use control metadata including copy control information (CCI), broadcasting flag (BF) and retention information (RI);
d) compressing the watermarked A/V media signal;
e) encrypting the compressed A/V media signal;
f) receiving and multiplexing the compressed and encrypted A/V media signal to thereby output a media transport stream;
g) receiving and re-multiplexing the media transport stream, the additional data and the access control information to thereby output a re-multiplexed signal; and
h) scrambling the re-multiplexed signal by using the control word. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A computer-readable recording medium for recording a program that implements a method for operating a broadcasting server system that protects and manages digital broadcasting contents, comprising the steps of:
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a) generating access control information and a control word based on subscriber information, the access control information including CAT, entitlement control message (ECM) and entitlement management message (EMM);
b) generating additional data including use control metadata, tool information metadata and content purchase information metadata to protect and manage the digital broadcasting contents;
c) receiving an identification of a broadcasting content, which is referred to as a content ID, and the use control metadata and watermarking an audio/video (A/V) media signal by using the content ID and the use control metadata as watermarks, the use control metadata including copy control information (CCI), broadcasting flag (BF) and retention information (RI);
d) compressing the watermarked A/V media signal;
e) encrypting the compressed A/V media signal;
f) receiving and multiplexing the compressed and encrypted A/V media signal to thereby output a media transport stream;
g) receiving and re-multiplexing the media transport stream, the additional data and the access control information to thereby output a re-multiplexed signal; and
h) scrambling the re-multiplexed signal by using the control word.
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Specification