November 28, 2001 CPTWG Protecting Against Unauthorized Redistribution of Digital Broadcast Content Presentation to the CPTWG Intel, Hitachi, Matsushita,

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Presentation transcript:

November 28, 2001 CPTWG Protecting Against Unauthorized Redistribution of Digital Broadcast Content Presentation to the CPTWG Intel, Hitachi, Matsushita, Sony and Toshiba

November 28, 2001 CPTWG Problem Statement Currently, there is no enforceable technical means to prevent unauthorized redistribution of unencrypted digital terrestrial broadcasts. A solution for such content is needed that would:   Enable content owners to signal application of content protection.   Avoid deletion or alteration of such signaling means.   Prevent unauthorized routing of protected content to unprotected digital outputs and unauthorized recording technologies.   Not interfere with lawful consumer recording and enjoyment of broadcast content.

November 28, 2001 CPTWG Challenges Achieve consensus on signaling means - broadcast flag (BF, ATSC flag for US use) and broadcast watermark (BW, the consensus watermark) - to signal application of protection against unauthorized redistribution for unencrypted digital terrestrial broadcast content. Develop compliance and robustness rules to govern the secure handling of unencrypted digital terrestrial broadcast content received by CE and IT products.   From tuner through to authorized outputs and recording technologies.

November 28, 2001 CPTWG Unmarked Content Technical Proposal TunerTSP Present? Yes No In-the-clear, terrestrial digital broadcast content Detect either BF or BW at election of implementer Received Content Marked Content Permitted recording technologies and methods Permitted physical outputs

November 28, 2001 CPTWG Definitions “Received Content” is digital terrestrial broadcast content that has been processed by a digital demodulator. “Marked Content” is Received Content that has been screened for either the BF or BW and determined to contain such signaling means. “Unmarked Content” is Received Content that has been screened for either the BF or BW and determined not to contain such signaling means.

November 28, 2001 CPTWG Compliance Rules Summary Compliant Products: Must comply with specified robustness rules (see next slide). Must ensure Received Content is screened for either the BF or BW at the election of the implementer. Must ensure Marked Content leaves the product only by:   Authorized outputs (e.g., IEEE1394 w/DTCP, DVI w/HDCP, analog, etc.).   Removable media that implement secure recording means (e.g., CPRM, D-VHS, etc.). Subject to the robustness rules, have no limitations concerning the internal   display,   processing or   secure buffering or lawful storage of Received Content. Have no requirements concerning Unmarked Content.

November 28, 2001 CPTWG Robustness Rules Summary Compliant Products must: Not have functions that defeat the compliance or robustness rules. Be designed and manufactured in a manner that provides a specified level of protection against unauthorized routing of Received Content, and against interference with the BF or BW, prior to screening for either of such signaling means. Be designed and manufactured in a manner that provides a specified level of protection against unauthorized routing of Marked Content.

November 28, 2001 CPTWG Proposed Next Steps: invited for a technical discussion of issues related to the proposed solution Multi-industry participation is invited for a technical discussion of issues related to the proposed solution. Make expeditious progress:   Technical and enforcement solutions   Substantial completion by Q1, '02 Meeting following CPTWG today:   Further review and discuss this technical proposal   Organize group and set intermediate milestones and logistics for next series of meetings

November 28, 2001 CPTWG To Participate in the Working Group: Send an to Send an to  In the body of the message, note that you want to join the “Broadcast Protection” group