Jeff Murton
01-09-2007, 03:26 PM
Just wading in to this forum for the first time after reading the following article...
It's my understanding that Red One will have a Kona-3 type, mini-BNC for external monitoring of dual coaxial HD-SDI where the bandwidth of each link is 1.5Gbit/sec.
The latest standard for SDI is 3Gbit/sec which allows for uncompressed 1080P60 and better over a single co-axial link using existing BNCs, cabling and patch panels. No more hassles of dual HD-SDI cabling!
Is Red implementing the new standard in the first generation of Red One?
I'd love to see a menu driven option for selecting either a single 3Gbit/sec link or dual 1.5Gbit/sec active.
This from the Red One spec page:
Video Outputs:
Single and dual link HD-SDI
2K 4:4:4 RGB
1080p 4:4:4 RGB
1080p 4:2:2
1080i 4:2:2
720p 4:2:2
3G: The Evolution of the Serial Digital Interface (SDI)
John Hudson and Nigel Seth-Smith, Paper, SMPTE Motion Imaging Journal, Nov/Dec2006
Abstract:
SMPTE and the International Telecommunications Union (ITU) have both recently adopted new standards for a 3-Gbit/sec (nominal) SDI interface using 75Ω coaxial cable and BNC connectors. The interest in these interfaces is driven by a desire to be able to transport 1080-line progressive format video over a single-link interface, rather than the dual-link interfaces currently used. The implementation of this interface with existing infrastructure components such as patch panels, connectors, coax cable types, and such, has been studied, and key components have been realized in silicon. The results of this work and key design guidelines are discussed in this paper.
http://smpte.org/smpte_store/standards/index.cfm?scope=1&stdtype=smpte&CurrentPage=20
SMPTE 424M-2006 Television - 3 Gb/s Signal/Data Serial Interface
This standard is a transport defining a bit-serial data structure for 3 Gb/s [nominal] component digital signals or packetized data. This standard specifies a coaxial cable interface suitable for applications where the signal loss does not exceed an amount specified by the receiver manufacturer.
SMPTE 425M-2006 Television - 3 Gb/s Signal/Data Serial Interface - Source Image Format Mapping
This standard specifies the direct mapping of various source image formats as defined in table 1; the carriage of embedded audio; the carriage of ancillary data and the stream ID, in a serial digital interface operating at a nominal rate of 3 Gb/s. This standard also specifies the mapping 2 x SMPTE 292M HD SDI interfaces including SMPTE 372M, Dual Link 292M Interface for 1920 x 1080 Picture Raster, into a serial digital interface operating at a nominal rate of 3 Gb/s.
It's my understanding that Red One will have a Kona-3 type, mini-BNC for external monitoring of dual coaxial HD-SDI where the bandwidth of each link is 1.5Gbit/sec.
The latest standard for SDI is 3Gbit/sec which allows for uncompressed 1080P60 and better over a single co-axial link using existing BNCs, cabling and patch panels. No more hassles of dual HD-SDI cabling!
Is Red implementing the new standard in the first generation of Red One?
I'd love to see a menu driven option for selecting either a single 3Gbit/sec link or dual 1.5Gbit/sec active.
This from the Red One spec page:
Video Outputs:
Single and dual link HD-SDI
2K 4:4:4 RGB
1080p 4:4:4 RGB
1080p 4:2:2
1080i 4:2:2
720p 4:2:2
3G: The Evolution of the Serial Digital Interface (SDI)
John Hudson and Nigel Seth-Smith, Paper, SMPTE Motion Imaging Journal, Nov/Dec2006
Abstract:
SMPTE and the International Telecommunications Union (ITU) have both recently adopted new standards for a 3-Gbit/sec (nominal) SDI interface using 75Ω coaxial cable and BNC connectors. The interest in these interfaces is driven by a desire to be able to transport 1080-line progressive format video over a single-link interface, rather than the dual-link interfaces currently used. The implementation of this interface with existing infrastructure components such as patch panels, connectors, coax cable types, and such, has been studied, and key components have been realized in silicon. The results of this work and key design guidelines are discussed in this paper.
http://smpte.org/smpte_store/standards/index.cfm?scope=1&stdtype=smpte&CurrentPage=20
SMPTE 424M-2006 Television - 3 Gb/s Signal/Data Serial Interface
This standard is a transport defining a bit-serial data structure for 3 Gb/s [nominal] component digital signals or packetized data. This standard specifies a coaxial cable interface suitable for applications where the signal loss does not exceed an amount specified by the receiver manufacturer.
SMPTE 425M-2006 Television - 3 Gb/s Signal/Data Serial Interface - Source Image Format Mapping
This standard specifies the direct mapping of various source image formats as defined in table 1; the carriage of embedded audio; the carriage of ancillary data and the stream ID, in a serial digital interface operating at a nominal rate of 3 Gb/s. This standard also specifies the mapping 2 x SMPTE 292M HD SDI interfaces including SMPTE 372M, Dual Link 292M Interface for 1920 x 1080 Picture Raster, into a serial digital interface operating at a nominal rate of 3 Gb/s.