The Verance Copy Management System for Audiovisual Content Cinavia System Specification Part 1: System Architecture Specification Version 1.2 Effective Date April 30, 2009 Publication Number 4219-0001 (00N) Status Baseline Handling Classification Non-confidential Verance Corporation +1 858 202 2800 4435 Eastgate Mall, Suite 350 Fax +1 858 202 2801 San Diego, CA 92121 USA www.verance.com Cinavia System Specification, Part 1: System Architecture 2006-2009 VERANCE CORPORATION. ALL RIGHTS RESERVED. NOTICE OF PROPRIETARY NON-CONFIDENTIAL INFORMATION READ THE TERMS SET FORTH BELOW CAREFULLY BEFORE YOU ACCEPT THE Cinavia System Specification, Part 1: System Architecture (“PUBLICATION”). BY ACCEPTING THIS PUBLICATION, YOU AGREE TO ALL THE TERMS SET FORTH BELOW. IF YOU DO NOT AGREE WITH THE TERMS SET FORTH BELOW, DO NOT ACCEPT THIS PUBLICATION AND CONTACT VERANCE CORPORATION IMMEDIATELY AT THE FOLLOWING EMAIL ADDRESS: [email protected]. 1. OWNERSHIP/RIGHTS: Verance Corporation (“Verance”) owns all right, title and interest in this Publication and all associated intellectual property rights. Verance, the Verance logo, Cinavia and the Cinavia logo are trademarks of Verance Corporation. No license, expressed or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. 2. BRAND NAME: Prior to September 10, 2008, Verance’s copy protection technology referred to as “Cinavia” in this Publication was known as the Verance Copy Management System for Audiovisual content (“VCMS/AV”). Any reference to “VCMS/AV” in any version of the Publication distributed prior to September 10, 2008 which may be extant should be replaced with “Cinavia.” 3. 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Terms of Use Non-confidential ii Cinavia System Specification, Part 1: System Architecture Contents 1 Purpose and Scope................................................................................................................1 2 Objectives and Design Criteria..............................................................................................2 3 System Architecture...............................................................................................................2 3.1 Watermark....................................................................................................... 4 3.1.1 Transparency ............................................................................... 4 3.1.2 Capacity....................................................................................... 5 3.1.3 Reliability.................................................................................... 5 3.2 Embedder ........................................................................................................ 6 3.2.1 Embedding Workflow ................................................................. 6 3.2.2 Embedding and Verification Products ........................................ 7 3.3 Detector........................................................................................................... 7 3.3.1 Detector Integration..................................................................... 7 3.3.2 Detector Products ........................................................................ 8 4 Glossary..................................................................................................................................9 Table of Figures Figure 1. Cinavia Reference Model................................................................... 1 Table of Tables Table 1. Summary of the defined Copy Management States............................. 4 Table 2. Examples of audio processing that Cinavia survives........................... 6 Contents Non-confidential iii Cinavia System Specification, Part 1: System Architecture 1 Purpose and Scope Cinavia is a copy protection technology platform that employs proprietary audio watermarking techniques to enable the communication and enactment of use policies for audiovisual content across a broad range of distribution channels and devices. Cinavia was formerly known as the Verance Copy Management System for Audiovisual content (VCMS/AV). The Cinavia specification defines this platform and specifies its rules of compliance. The Cinavia specification is comprised of the Cinavia System specification, the Cinavia Embedder specification, the Cinavia Detector specification, the Cinavia Marked Content Specification, and the Cinavia Integrated Product specification. An itemized listing and summary of all parts of the Cinavia specifications is provided in Cinavia Specification Part 0: Manifest. The scope of the Cinavia specification can be understood through the reference model illustrated in Figure 1. A hierarchy of five layers of abstraction are provided (Physical, Data Link, Watermark Packet, Logical Watermark, and Application), each encompassing a different aspect of Cinavia system behavior. Each layer in the hierarchy defines the functional relationship between two data elements of the system (Audio Signals, Raw Watermark Data Bitstreams, Watermark Data Packets, Watermark Data Fields/Payloads, Watermark States, and Device Behaviors). Device Behaviors Application Layer Watermark States Logical Watermark Layer Watermark Data Fields/Payloads Watermark Packet Layer Watermark Data Packets More Detail More Abstraction Data Link Layer Raw Watermark Data Bitstreams Physical Layer Audio Signals Figure 1. Cinavia Reference Model. This document provides an informative overview of the Cinavia system components, including their purpose, function, and properties. The use of the Cinavia specifications and its associated technology is subject to a license from Verance Corporation. 4219-0001 (00N) v1.2 Non-confidential 1 Cinavia System Specification, Part 1: System Architecture 2 Objectives and Design Criteria Cinavia is designed to meet the following general criteria: Non-interference with authorized uses of content Support for copy management functions appropriate to the complete life-cycle of audiovisual content, including: o Theatrical distribution and presentation o Home video via packaged media and electronic distribution o Video rental via packaged media and electronic distribution, including electronic sell-through o Pay TV via subscription, pay-per-view, and video-on-demand over private and public distribution networks o Distribution over legacy media types and formats o Free-to-air broadcast Compatibility and non-interference with other content production, distribution, and presentation technologies, including: o Data-rate reduction systems o Analog transmission and storage media, including over-the-air broadcast o Quality enhancement systems, such as surround, equalization, reverberation, and bass management techniques o Acoustic transmission, such as in-theater camcorder capture o Content protection systems, such as DRM, encryption and other watermarking technologies Minimal impact on content production workflow Efficient implementation in a wide range of consumer products, including personal computers, consumer electronic devices, and mobile devices Industry-leading resistance to circumvention Flexibility to support evolving application requirements Extensibility to support new application functionality 3 System Architecture Cinavia employs an Embedder to insert a Watermark containing the Copy Management Payload into the audio portion of audiovisual content prior to its distribution to consumers. The Marked Content can be distributed through any means (although certain configurations of the Watermark can only be distributed in limited ways) and may ultimately be used on Integrated Products that incorporate the Detector function. The Detector enables those devices to retrieve the information contained within the Watermark and apply content use policies in accordance with an applicable Supported Specification. The Cinavia system architecture is illustrated in Figure 2. In this illustration, the Integrated Products incorporate Cinavia Detectors and content shown with a water droplet carry the Cinavia watermark. To facilitate the harmonization of usage policies across multiple platforms, the Cinavia Copy Management Payload includes a common set of Copy Management States that describe the intended authorized uses or use limitations on the content and a common set of policies for their interpretation and response by Integrated Products. 4219-0001 (00N) v1.2 Non-confidential 2 Cinavia System Specification, Part 1: System Architecture Figure 2. Overview of the Cinavia system architecture. For each Copy Management State, there is a list of content protection system configurations (“Authorized Credentials”) that govern the playback of the Marked Content in an Integrated Product. The presence of any one of the Authorized Credentials is sufficient to authorize the playback or recording of a Marked Content (subject to whatever other limitations may be associated with the Authorized Credential). If none of the Authorized Credentials are associated with Marked Content, a Grace Period of use of the content may be allowed in order to permit certain ancillary uses of Marked Content even when Authorized Credentials are not present. Specifically, no usage limitations will be applied to the content so long as the use is restricted to a time period