Analog ReconversionAnalog ReconversionReference ArchitectureReference Architecture

ProposalProposal

presented to the presented to the Analog Reconversion Discussion GroupAnalog Reconversion Discussion Group

March 5, 2003March 5, 2003

bybyBrad HuntBrad Hunt

Chief Technology OfficerChief Technology OfficerMotion Picture Association of AmericaMotion Picture Association of America

AnalogOutput

(in the clear)

Digital Video RecordingFunction

Digital Video Recorder

with Protected Digital Inputs

ProtectedDigital Output

(encrypted)

Analog-to-DigitalVideo Converter

Device RenderingProtected

Digital Contentwith

Usage Rights Information

Digital Video Recorder with Analog Inputs

Analog Reconversion ProblemAnalog Reconversion Problem

• For legacy analog devices, protected digital video content must be For legacy analog devices, protected digital video content must be converted to analog video signals.converted to analog video signals.

• Analog video signals can be easily converted to digital without any Analog video signals can be easily converted to digital without any obligations to preserve the content’s usage rights information.obligations to preserve the content’s usage rights information.

• Since the usage rights are not managed equivalently, the natural Since the usage rights are not managed equivalently, the natural transition from analog to an all-digital world is impeded.transition from analog to an all-digital world is impeded.

Rights are NOT Rights are NOT managed managed

equivalentlyequivalently

Rights NOTPreserved

Internet

RightsPreserved

Analog Reconversion Reference ArchitectureAnalog Reconversion Reference Architecture

DigitalContentMaster

Digital Source Devicewith Analog Output

(Trusted Environment)

CopyControl

Information

DigitalContent

LinkProtected

DigitalOutput

with CCI

Digital Processing

(decryption,decoding,

etc.)

ProtectedDigital

ContentDelivery

withCopy

ControlInformation

(CCI)

Digital Sink Devicewith Analog Input(Trusted Environment)

RightsInformation

DigitalContent

SecureDigitalVideo

Record Function(CCI = Rights)

SecureDigitalOutput

Function(CCI = Rights)

Record Control

Redistribution Control

ProtectedDigital Output

with CCI

ProtectedDigital Recording

with CCI

Analog Outputwith

Rights Signaling

Digital-to-

AnalogVideo

Converter(Rights = CCI)

Analog Output

withRights

Signaling

ProtectedDigitalOutput

with CCI

Brad Hunt3-5-03

Digital Processing

(encoding,encryption,

etc.)

DigitalContent

CCI

RightsSignalingInsertion

Point(Digital)

A

RightsSignalingInsertion

Point(Digital)

B

RightsSignalingInsertion

Point(Digital)

D

RightsSignalingInsertion

Point(Analog)

E

Possible Rights Signaling Insertion Points

RightsSignalingInsertion

Point(Digital)

C

LinkProtected

DigitalInput

with CCI

RightsSignalingDetection

Point(Analog)

W

RightsSignalingDetection

Point(Digital)

X

RightsSignalingDetection

Point(Digital)

Y

Possible Rights Signaling Detection Points

RightsSignalingDetection

Point(Digital)

Z

Analog-to-

DigitalVideo

Converter