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© 2003 Verance Corporation. 1
Verance Copy Management System
Presentation to CPTWG ARDG
April 10, 2003
© 2003 Verance Corporation. 2
Presentation Overview
• Verance Copy Management System for Audio Content (VCMS/A)– Performance Specifications– Format Support– System Architectures– Deployment Status
• Applying VCMS to Protecting A/V Content (VCMS/AV)– Technical Considerations
• Conclusions
© 2003 Verance Corporation. 3
VCMS/A: Overview
• Multi-industry “consensus audio watermark” for audio only content
• Core technology from Verance, tailored to music industry requirements, independently evaluated, and adopted by consensus
• Provides persistent copy status signaling in audio and playback control, record control, and generational copy management functions in consumer devices
• Perceptually transparent, robust to a wide range of distortions, large data payload, low processing requirements
• Mature, proven technology with significant deployments
• Adaptable to evolving market needs, technical requirements
© 2003 Verance Corporation. 4
VCMS/A: Performance Specifications
• Perceptual Quality– Absolute transparency to “golden ears” on 96/24 content
• Data Payload– 4 CCI bits per 15 seconds (3 assigned [1 “remark”-able]; 1 rsvd.)– 8 Usage ID bits per 15 seconds (reserved)– 60 Content ID bits per 30 seconds (reserved)
• Robustness– 36 dB SNR noise– 6 kHz bandlimiting– 32 kbps/channel codec– +/-10% linear speed– +/-4% PITS
• Computational Requirements– Detect from 48/16/2 PCM: 10 MIPS, 16 kB data, 8 kB code– Remark on 48/16/2 PCM: 20 MIPS, 32 kB data, 20 kB code (proj.)
– Wow & flutter– Echo/reverb– EQ +/-6dB/oct– Channel mixing 621– Dynamic range compression
© 2003 Verance Corporation. 5
VCMS/A: Performance Validation
• Performance validated through independent evaluations– 1997
• MUSE Program for Digital Media Management in the European Music Sector
– 1998• 4C Entity Evaluation of Audio Watermarks for use in Copy
Protection System Architecture (CPSA)– 1999
• Secure Digital Music Initiative Evaluation of Screening Technologies for SDMI Portable Device Specification, Phase I
– 2000• Secure Digital Music Initiative Evaluation of Screening
Technologies for SDMI Portable Device Specification, Phase II– 2001
• JASRAC STEP 2001 Project for Certification of Digital Audio Watermark Technology
© 2003 Verance Corporation. 6
VCMS/A: Format Support
• Watermarked audio can be distributed in any format– Packaged media
• CD, DVD-V, DVD-A, SACD, etc.
– Electronically distributed media• Webcasting, subscription services, downloaded content, etc.
– Broadcast media• Free-to-air, digital music services, satellite radio, etc.
• Watermark enforcement required in “compliant” secure formats– 4C Entity Copy Protection System Architecture (CPPM/CPRM)
• DVD Audio playback and record control• SD Card Audio record control
– SDMI Portable Device Specification• Media player application record control• Portable music device record control
© 2003 Verance Corporation. 7
VCMS/A: System Architecture
• Defined Watermark States:– “copy freely”, “one copy allowed”, “no more copies”– “sdmi upgrade trigger set/not set” (obsolete)
• Compliance Rules:– Screen all unencrypted content for watermark at inputs– Accept “copy freely” and unmarked content– Reject content marked “no more copies”– Handling of “one copy allowed” is format dependent
• DVD playback: Reject if unencrypted• DVD recording: Allow but encrypt and mark “no more copies”• SDMI recording: Accept
– Device must be tamper-resistant– Compliance is “self-certified”
© 2003 Verance Corporation. 8
VCMS/A: Deployment Status
• Content Owners– All major labels distributing watermarked EMD content
• Hundreds of thousands of tracks embedded– One major label distributing watermarked packaged media
• Hundreds of DVD Audio titles
• Consumer Products– All DVD Audio players and recorders include watermark detectors
• Over one million consumer devices (including hybrid DVD-V/DVD-A)• Detectors included in many OEM chipsets
(e.g. Cirrus Logic, Hitachi, MEI, Sharp, ST Micro, Toshiba, Zoran)– All SD Card Audio devices include detectors
• Hundreds of thousands of consumer devices• Primarily cellular phones for the Japanese market
– Some portable music devices• Devices from Philips, SonicBlue/Rio, Samsung, and Sony
– No adoption in software media player market
© 2003 Verance Corporation. 9
VCMS/A: Representative Customers
© 2003 Verance Corporation. 10
• Use audio watermark to protect A/V content by adapting VCMS/A technology
• Benefits:– Existing implementations accelerate deployment– Common core technology reduces resource requirements– Larger adopter base amortizes economic costs– Existing standard status facilitates acceptance
VCMS/AV: Adapting VCMS/A to A/V Content
VCMS/A
VCMS/AV
COMMON CORE TECHNOLOGY
© 2003 Verance Corporation. 11
VCMS/AV: Technical Considerations
• Performance Specifications– Transparency, Robustness, Data Payload,
Computational Requirements, Effectiveness
• System Architecture– Watermark states, Compliance Rules,
Harmonization of Audio and A/V Compliance Rules
• Format Support– Formats, Devices, System Architectures
© 2003 Verance Corporation. 12
Conclusions
• VCMS is proven and accepted solution for music
• VCMS is a potential near-term solution for A/V content
• VCMS provides substantial flexibility and expandability as market needs and tech environment evolve
© 2003 Verance Corporation. 13
Verance Copy Management System
Presentation to CPTWG ARDG
April 10, 2003