DRM for digital broadcast

8/14/2019 DRM for digital broadcast

1/25

Dig i t a l Right s Managem entDig i t a l Right s Managem ent

for Dig i t a l Broadc astfor Dig i t a l Broadc ast

Xin WangContentGuard, Inc.

and

Department of Computer Science

University of Southern California

November 22, 2004


2/25

2

Out l ineOut l ine

DRM Concepts

Current State of Digital Markets A DRM Model

DRM in Digital Broadcasting

Requirements for Broadcasting DRM

Conclusions


3/25

3

DRM Conc ept sDRM Conc ept s

Digital Assets

Any contents, resources and services in digital domain

Examples: audio, video, text, image, software, service.

Digital Rights

Privileges for creating, distributing, using and managing

digital assets Examples of usage rights: play, print, copy, adapt, transfer

Examples of meta rights: issue, obtain, revoke.

Digital Rights Management (DRM)

A unified approach to specifying, interpreting, enforcing andmanaging digital rights throughout the entire life cycle of theassets


4/25

4

Digi t a l Supp ly ChainDigi t a l Supp ly Chain

Consumer

Protectedcontent

Rights&

Condition

s

Prices&

Business

models

Author / Artist

Originalcontent

CreatePackage & Protect Sell

Play

eTailer / Clearinghouse

Protectedcontent

Rights &Conditions

Publisher

Protectedcontent

Rights &

Conditions

Prices &Business models

ClearRights &

PermissionsDistributeAggregate

Authoring/EditingTools

Publishing/Production

Asset Management

Content Packaging

Hosting

Store Front/Posting

Rights Clearing

Rendering Devices &Applications

Technologies:


5/25

5

Purposes o f DRMPurposes o f DRM

Not just to prevent illegal accessing and

sharing digital assets on open and closedplatforms

But, more importantly, enable to access more,

high quality assets in more convenientfashions

And, at the same time, support more flexible

business models to create more digitalmarkets for creating, distributing andconsuming digital assets


6/25

6

Current St a t e o f Dig i t a l Mark et sCurrent St a t e o f Dig i t a l Mark et s

Still forming, with early experimentation and

confusion DRM confused with content security

Narrow focus on combating piracy

Early limited applications & services Music Industry moving into next stage: experiment with new

but limited models

Mobile industry engaging

Inability to support content across multipleplatforms, formats or media types

Interoperable standards not yet deployed


7/25

7

Governanc e verse Prot ec t ionGovernanc e verse Prot ec t ion

All RightsAll Entities No governance, no protection

All RightsSome Entities Protection for those entities (e.g., encryption with their

keys)

Some RightsAll Entities Governance with those rights

Some RightsSome Entities Protection for those entities Governance with those rights


8/25

8

Chanc es and Chal lengesChanc es and Chal lenges

Digital market is out there, when business models make sense

Apples iTunes music store: >250M downloads since April,with 99 per song

Microsoft, Sony and Walmart will enter the market startingnext year.

$80M digital music market will hit $1.6B in 2008. What about video market?

User experience and consumer device interoperability

Current digital music stores use different DRM methods toprotect songs against unlimited copying. But consumerscan then only play the music on devices (computers, CDand MP3 players) which support the same DRM system.


9/25

9

Sam ple DRM Produc t s/Serv ic esSam ple DRM Produc t s/Serv ic es

Media and Entertainment Mobile Enterprise

Microsoft [RMS]Adobe [Policy Server]IBMAuthenticaSealed Media

Liquid Machines

Microsoft [WMDRM]Apple [Fairplay]Real [Helix]Sony [Open MG]Macrovision

IBM [Digital Media Factory]

NokiaNECOpenWaveSDCCoreMedia

BeepScienceDMDSecureUCP Morgen

DRMTechnologyProviders

OverDriveGigaTrust

LoudEyeMusicNetApple [iTunes]Real [Rhapsody]MovieLink

O2VodafoneT-MobileOrangeNow3StreamManCMLAEnd2EndUCP Morgen

Service

Providers


10/25

10

MPEGMPEG--21 Fram ew ork21 Fram ew ork

DID - Digital Item Declaration

DII - Digital Item Identification

IPMP - Intellectual PropertyManagement and Protection

REL - Rights Expression

Language

RDD - Rights Data Dictionary

DIA Digital Item Adaptation

DIP Digital Item Processing

User A User BTransaction/Use/Relationship

Digital ItemAuthorization/Value Exchange

Terminals &Networks

ContentManagementand usage

IntellectualProperty

managementandProtection

Digital ItemIdentification

Digital Item

Declaration

ContentRepresentation

Event Reporting


11/25

11

A Pr im i t ive DRM Mode lA Pr im i t ive DRM Mode l

SourceSource DestinationDestination

AssetAsset

RightsRights

Trust Infrastructure

The primitive model can be used as building blocks to compose compound ones.


12/25

12

Current Dis t r ibut ion CaseCurrent Dis t r ibut ion Case

Harry Potter

SourceSource DestinationDestination

AssetAsset

RightsRights

MovieLink Alices PVR

MovieLink allows for Alices PVR to play Harry Potter until Dec 1, 2004.


MovieLink is an authorized distributor for Harry Potter, and PVR is a compliant device.


13/25

13

Hom e Dig i t a l Hub CaseHom e Dig i t a l Hub Case

DistributorDistributor

MovieLink allows the HomeDigital Hub to Issue Rights toany Device that is within itshome network to Play Harry

Potter until Dec 1, 2004


PVRPVR

PCPC

MobileMobile

AssetAsset

Rights

2

Rights

2

AssetAsset

Rights3

Rights3

AssetAsset

Rights4

Rights4

The Hub Digital Hub allows for PVR toPlay Harry Potter until Dec 1, 2004

Harry Potter

MovieLink

AssetAsset

RightsRights

Home

DigitalHub

MovieLink is an authorized distributor for Harry Potter, PVR is a compliant device, and Home Digital Hub is a compliant media center.


14/25

14

Digi t a l Supp ly Chain CaseDigi t a l Supp ly Chain Case

Harry PotterWarner Bros.


Creator

Creator

MovieLink allows the HomeDigital Hub to Issue Rightsto any Device within its homenetwork to Play Harry Potteruntil Dec 1, 2004

AssetAsset

Rights

2

Rights

2

The Home Digital Huballows for PVR to PlayHarry Potter until Dec1, 2004

PVRPVR

AssetAsset

Rights

3

Rights3

PCPC

AssetAsset

Rights4

Rights4

MobileMobile

AssetAsset

Rights5

Rights5

MovieLinkAssetAsset

RightsRightsHome

Digital Hub

Creator allows MoiveLink to

issue Rights for $3.00 to aHome Digital Hub to IssueRights to any Device that iswithin its home network to Playuntil Dec 1, 2004

Creator is a well-known movie studio,

MovieLink is an authorized distributor for Harry Potter, PVR is a compliant device, and Home Digital Hub is a compliant media center.


15/25

15

DRM in Broadc ast ingDRM in Broadc ast ing

Currently dominated by conditional access systems (CAS)

Customer is given a designated box by the serviceprovider, and that box works with only that providersnetwork

Customer buys an open box, and gets a smart card

access from the service provider Most CAS for broadcast applications are proprietary

Very simple business model

Once granted with access, you have all rights provided bythe CAS

Some broadcast standardization bodies (e.g., DVB) are workingtowards DRM systems beyond the capabilities of CAS.


16/25

16

Trends in TV Broadc ast ingTrends in TV Broadc ast ing

Customers want to watch what they want when they want from avirtually unlimited and interactive content selection

Watching time shift by recording content at either a central portal or local terminal

More delivery channels wire, wireless ground (cable) and air (satellite)

Receiving terminals Static TV, set-top-box, PVR and PC Mobile phones, PDAs

Record and share With devices within a home domain With friends across different domains

Understand what rights available Knowing what are and are not allowed to do Make right choice


17/25

17

Requi rem ent s for Broadc ast ing DRMRequi rem ent s for Broadc ast ing DRM

Provide persistent protection and governance throughoutcontent life-cycle, especially post-broadcasting

Protection with security

Governance with rights

Support flexible business models

Super-distribution, rental, lending, transfer, etc.

Provide friendly user experience

Ensure interoperability of rights and trust management

across different platforms, formats and media types Renewability


18/25

18

The Need for In t eroperab i l i t yThe Need for In t eroperab i l i t y

Rightsholders want their content rendered on all platforms

But the digital distribution market is fragmented with varying needs forsecurity and protection

Many distributors, many geographies

Tech vendors want all content to run on their platforms

But vendors rely on rendering environment lock-in to build/retain marketshares

Service providers want to serve users with content and platform of

their choice

But providers distribute content and adopt DRM platforms based onbusiness relationship with rightsholders and tech vendors

Users want the content of their choice to be rendered on the

platform of their choice

But users do own different types of devices


19/25

19

Evolu t ion o f DRM Mark et p lac eEvolut ion of DRM Mark et p lac e

Past Future

Proprietary DRM Combat piracy

(defensive)

Interoperable DRM

New business models(offensive)


20/25

20

Fut ure o f DRMFut ure o f DRM --Enabled Dig i t a lEnabled Dig i t a l

MediaMedia

Content ownersdecide what,when, where and how theircontents to be released

Consumersdecide what, whenand where to watch

CE vendorsmanufacturedevices with good userinterface and features

Service providersprovidedigital media infrastructureservices like telephone, waterand electricity


21/25

21

Conclus ionsConclus ions

Content of value will move to many connected and disconnecteddevices

Still Early Days for DRM; new business models just emerging

Persistent protection with security and governance with rightsthroughout content life-cycle are critical

Rights and trust management to enable flexible business models Standards and Interoperability are necessary to fulfill the vision

of Digital Content Distribution

within domains (e.g. mobile)

across domains (e.g. within the home)


22/25

22

Thank YouThank You

[email protected]

[email protected]


23/25


24/25

24

ContentGuardContentGuard

Launched in April 2000

Time Warner, Microsoft, and Xerox investors A decade of patented Xerox PARC research

Developer of XrML - the basis for ISO MPEG-RELand other standards

Headquartered in Bethesda, MD; EngineeringOperations in El Segundo, CA

Business Areas

Digital Rights Management Standards IP Licensing

Software tools

C t t G d K P t &C t t G d K P t &


25/25

25

Cont ent Guard K ey Par t ners &Cont ent Guard K ey Par t ners &

CustomersCustomers

DRM for digital broadcast

Documents

Transcript of DRM for digital broadcast