high bandwidth interface for cameras and digital cinema fraunhofer iis (s. foessel, a. widera)
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High Bandwidth Interface for Cameras and Digital Cinema Fraunhofer IIS (S. Foessel, A. Widera) 22th Feb 2006. Actual situation. Today's and future digital cameras need higher interface bandwidth ≥ 10 Gbit/s. - PowerPoint PPT PresentationTRANSCRIPT
High Bandwidth Interface forCameras and Digital Cinema
Fraunhofer IIS (S. Foessel, A. Widera)
22th Feb 2006
Digital Cinema
Page 2
Actual situation
Today's and future digital cameras need higher interface bandwidth ≥ 10 Gbit/s
High bandwidth interface between cinema server and projector is one possible solution according DCI spec.
With more and more 2k and 4k DI processes postproduction needs also a higher bandwidth interface
Digital Cinema
Page 3
Application fields
Camera Field Recorder
Acquisition Postproduction
IT-Environment Server Projector
Presentation
10Gig Interface 10Gig Interface 10Gig Interface 10Gig Interface
Digital Cinema
Page 4
Data Rate [Gb/s] for Bit Depth of Source Type hRes
[px] vRes [px]
Samp-ling
Frame Rate [fps]
10Bit 12Bit 14Bit 16Bit
4k 4096 2160 444 24 6,370 7,644 8,918 10,192
2k 2048 1080 444 24 1,593 1,911 2,230 2,548
DC
I
2k 2048 1080 444 48 3,185 3,822 4,459 5,096 ARRI D-20 2880 2160 444 24 ND 5,375 ND ND
1920 1080 444 96 ND 7,166 ND ND
Dalsa Origin 4046 2048 444 24 ND ND ND 9,546
2048 1080 444 24 1,593 ND ND ND
1920 1080 422 24 0,995
ND ND ND Cam
eras
Panavision Genesis 1920 1080 444 50 3,110 ND ND ND 1k full aperture 1024 778 444 24 0,574 0,688 0,803 0,918
2k full aperture 2048 1556 444 24 2,294 2,753 3,212 3,671
3k full aperture 3072 2334 444 24 5,162 6,195 7,227 8,260
4k full aperture 4096 3112 444 8 3,059 3,671 4,283 4,895
6k full aperture 6144 4668 444 0,5 0,430 0,516 0,602 0,688
Film
Sc
ann
er
8k full aperture 8192 6224 444 0,1 0,153 0,184 0,214 0,245
Digital Cinema
Page 5
Proposal
Real-time requirements but also compatibility to IT infrastructure desirable, because of the price and availability
Proposal of a 10 GE interface with real-time features, but also with the option to use as a standard interface
For some applications a robust connector is needed, but not for all (harsh environment and IT environments!)
Digital Cinema
Page 6
Concept – Protocol
Data
Application layer
Data
Transport layer
UDP header
Data
Network layer
UDP headerIP header
Data
Network interface
UDP headerIP headerEthernet header
Physical network
Digital Cinema
Page 7
Concept - Overview
10GE standard XFP modules (physical layer)
10GE standard ethernet clocking and framing allows use of 10GE infrastructure (e.g. switches)
Dedicated links between one data source and one or more destinations guarantees real-time work
UDP/IP protocol allows easy integration in workstations
Topologies: point-to-point or point-to-multipoint
Note: The IF is not intended as a general purpose 10GE network with all possible protocols!
Digital Cinema
Page 8
Concept – Protocol Framing
555555555555555D
Preamble Destaddr
FFFFFFFFFFFF Camera-ID
Sourceaddr
Cmd
Length/Cmd
CRC
CRC
45
Ethernet Payload
Ethernet
IP V4
Protocol-Type
01
QoS Length Ident.Counter-
value
Flags
Bytes 8 6 6 2 4
1Bytes 1 2 2
4000
2
03
1
TTL
UDP
1
Prot.Header-
Checksum
2
IP-Src. Addr. IP-Dest. Addr.
4 4
FFFFFFFF
IP-Data
0000UDP
Src. Port Dest. Port Length
Bytes 2 2 2
UDP-Data
2
Checksum
Data (Payload)
Type Flags Number
Bytes 2
Data
1 1
Digital Cinema
Page 9
Use of Ethernet Jumbo Frames up to 9000 Bytes
64/66 Bit encoding / CRC-32 / optional FEC
Payload within a frame can be Image Data, compressed or uncompressed
(e.g. one line of an image per Ethernet frame, or one component of a line)
Audio Data, compressed or uncompressed Metadata Data Control Data
Metadata Audio Image Metadata
Image No. 1
Metadata Audio Image Metadata
Image No. 2
...
Control Frame 2
...Camera->Recorder
Recorder->Camera
Concept
Image Header Metadata
Audio
Audio
... ImageAudio
Image Line 1 R Image Line 1 G Image Line 1 B
... ... ...
Image Line n R Image Line n G Image Line n B
Metadata...
Control
Image Footer
Metadata
Grouping of Ethernet Frames for a movie transfer:
Digital Cinema
Page 10
Realization of a complete 10GE link demonstrator and technology study within the next 8 months
Time schedule
Use of the Fraunhofer developments ARRI D20 and megacine field recorder as example
Involvement of the ASC into the requirement definitions and tests (Cooperation is officially defined)
Digital Cinema
Page 11
Dr. Siegfried FoesselFraunhofer IISGermany
email: [email protected]
Contact
Thank you for your attention!