Transcript Encrypted Data

"Managing and Protecting Digital Broadcast Audio, Video
and Data on Personal Computers”
Dewey Weaver
President
January 15, 2002
AccessDTV Overview
• AccessDTV develops digital media network
technology and services.
– Digital Media Receiver
– Network Management Server
• AccessDTV enables the digital television
network :
– Tuning, Timeshifting, Services
– TV set or “device” economics
– “WAN” access; “LAN” control and management
Page 2
AccessDTV Overview
• Founded May 2000
• Located in Raleigh, North Carolina
• 18 Employees
• Multiple patents pending
Page 3
Input 
Digital
Input 
Digital Media Receiver
Analog
Broadcast DTV
Digital CATV
accessDTV
Broadcast TV
CATV, Satellite TV
PCI Bus
PC monitor via
PC video card
Page 4
Output
software
Speakers via
PC sound card
Digital display or
PC Monitor
Dolby Digital
surround sound
Client Functionality
Data bits in signal
are extracted
and stored on
client PC as
data files. These
files might be
games,
application
software, or
actual movies.
Page 5
Audio and Video bits are displayed
on client’s computer in a separate
video window.
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GUI
Analog + Digital TV Tuning
Signal Metering
TV Station Branding
Ad Management
PVR/digitalVCR Control
Conditional Access Control
Datacast Management
Why PC DTV Encryption
• Proprietary copy protection needed for
emerging PC-powered DTV market
• “In-the-clear” content protection technology
• Reduced liability for vendors while content
owners implement standards
• Patent Pending
• Reference design for STB, digital display
– Multi-tuner, HW/SW Decode, Advanced UI,
– Services, Transport to IP Client Server
Page 6
accessDTV Encryption
Tuner
Demodulate
EPROM
(Serialization)
128 Bit Wrapper
Capture Filter
Capture Bitstream
Bit Scrubber
Encrypted Data
PCI to PCI
Bridge
Storage
Encryption
accessDTV Decryption
Storage
Encrypted Data
PCI to PCI
Bridge
EPROM
(Serialization)
128 Bit Wrapper
Capture Filter
Decryption
Bit Scrubber
Decrypted Data
Video (Analog, 1394, DVI, Panelink)
DTV
Decode
Page 8
Data
Audio
accessDTV Timeshifting Encryption
Tuner
EPROM
Demodulate
(Serialization)
128 Bit Wrapper
Capture Filter
Capture Bitstream
Bit Scrubber
Encryption
Encrypted Data
Video
PCI to PCI
Bridge
Page 9
Storage
DTV
Decode
Data
Audio
Value Proposition by Industry
• PC-OEM: Beachhead app for home networks, media
server
• TV set: Integrated DTV/PVR functionality, services,
802.11a networking
• CATV: DTV & PVR in next-gen set-top
• Broadband ISP: Entertainment bundle to compete
with CATV
• TV Broadcaster: Digital audience; “wireless cable”
“One core product fits all”
Page 10
MPAA CPTWG
January 2002
For additional Information:
accessDTV
3203 Womans Club Drive
Raleigh, NC 27612
919.782.9770
[email protected]