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Digital Content Protection Overview. April 26, 2002. Current digital media landscape Current/emerging protection measures Future trends Issues. Digital Media Landscape. Storage. Content Pipes Players User interface Users. Content Types. Audio-visual

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Digital Content Protection Overview


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    Presentation Transcript
    1. Digital Content ProtectionOverview April 26, 2002

    2. Current digital media landscape • Current/emerging protection measures • Future trends • Issues

    3. Digital Media Landscape Storage Content Pipes Players User interface Users

    4. Content Types • Audio-visual • Sound • Interactive • Executables • Text • Other data

    5. Digital distribution pipes • Narrowband phone • Broadband (Cable/DSL/Satellite) • Cable • DBS • Broadcast (Digital TV/Radio/Datacasting) • Wireless 2 way nets • 2.5/3G cell • 802.11x hot spots • LMDS/MMDS

    6. Players • PC’s/Info appliances • TV STB’s (Digital cable/VDSL/PVR’s/ITV) • DVD/DVD-R • D-VHS • i-DVD • Game console • CD • MP3 • MP4 • PDA’s • Cell phones

    7. Digital storage media • DVD • CD • D-VHS • DAT • Removeable Mag disc • Hard Mag Disc • Flash RAM/ROM • Non volatile-RAM • Micro-optical

    8. User interface • TV • Stereo • PC display • Phone display • PDA display

    9. Users • Primary • consumers • Secondary • Libraries • Teachers/Students • Researchers/Developers • Special needs • Disabled

    10. Current protection measures • Audio-visual • Stored media • DVD CSS • Macrovision • D-VHS D-Theatre • Cable /satellite • Conditional access systems (W/return path) • Web • Proprietary DRM’s (e.g. Microsoft MRM) • Open rights languages (XRML, ORDL)

    11. Emerging protection measures • Audio-visual • Stored media (DVD’s, PVR’s) • CPRM/4C • DTCP/5C • D-Theater • HDCP/DVI • HDMI • Cable /satellite • POD’s • STB protections • 4C/5C/ • HDCP/HDMI/DVI • PHILA/OCAP • Broadcast • Flags • Watermarks (e.g. CPRM/4C) • Web • Secure PC

    12. Current protection measures • Audio • Stored media/recorders • Legislation (DMCA, AHRA) • CD copy protect (e.g. Cactus Data Shield) • CGMS, SCMS • SDMI • Web • Proprietary DRM’s (e.g. Microsoft MRM) • Open rights languages (XRML, ORDL) • Secure audio path

    13. Emerging protection measures • Music/Audio • Stored media/recorders • Watermarks for playback/copy control (e.g. Verance) • DVD-audio CSS-2 • Web • Secure PC

    14. Marked Content accompanied by DRM Un- Marked Content not accompanied by DRM Marked Content not accompanied by DRM

    15. Future trends • All different player types connected in home • Storage media portable between different player types • Moore’s law will aggravate piracy problem • Faster pipes • Better compression • Bigger memories • Smaller storage • New potential “fair uses” of rich media (distance learning) • New players (e.g. MP4), pipes (Digital Terrestrial Broadcast), media types (e.g. Interactive TV)will emerge • Consumers growing up with belief that “ sharing of licensed content with others is OK”

    16. Issues • Protection of unsecured content in peer-to-peer networks • Affordable protection in devices (e.g. PC’s) with many inputs, internal data paths, storage devices, data types and outputs • Renewability/extensibility of new measures • Managing the legacy problem while enabling responsible innovation • Interoperability of proprietary DRM’s and other protections • Public vs. private ownership • Role of government • Number of distinct measures needed to accommodate variability of compute power, memory, display performance, return path etc • Accommodating fair use and potential fair use applications • Consumer time shifting/portability, distance learning • Digital “check out” from libraries • Achieving Multiple lines of defense for unsecured content • Playback control • Copy control • Transmission control • Forensic tracking • Renewability/revocability of all of above • Enabling new business models (e.g. super-distribution)