EVS demonstrates slow motion servers
A day at the races
by Reinhard Wagner
To demonstrate its newest range of slow motion servers and software in a live set, EVS, the Belgian slow motion server company, recently invited its German broadcast customers to a racing centre near Frankfurt, with hands-on opportunities for operators and engineers.
In conjunction with Philips, who delivered the camera system, and AVS, who supported DVB transmission of video signals from racing carts, they showed new features and hardware options that are launching at NAB 2001.
The new generation of servers comes with two different configuration settings: four recorder channels plus two players or three-by-three channels. Different configurations can be recalled during the boot-up procedure so the system can be pre-configured for different applications and set up easily.
Although the interface layout has not been changed, the operation is slightly enhanced. On top of the 'slomo' replay and editing facilities, the EVS six-channel live slow motion system supports the analysis and illustration options such as Telestrator, Target Track & Split Screen. Both access times and reboot times are reduced (less than one minute) as well.
With the effects/mix board the six-channel version can create wipes and dissolves of internal signals directly from the disk. Loop recording mode and non-destructive clip length come together with new keyboard short cuts, which enable easy renaming of clips with standard names and titles. The disk controller has a total sustaining bandwidth of more than 240Mbps, allowing at least six simultaneous channels at 40Mbps. Embedded audio is used in conjunction with M-JPEG compression, and the two stereo pairs allow at least four 16-bit AES/EBU audio channels at 48kHz.
As EVS' Marcel Groos said: "At IBC 2001, file export in MPEG-2 compression format will be available. So stay tuned when you are looking for an LSM system."
File transfer over SDTI interfaces will be shown on a prototype machine at NAB. With this networking capability, several server mainframes can be interconnected over standard digital coax cable, available on every OB truck. This will allow access to other users on remote control stations to a connected storage device.
Philips' LDK 23HS Mk II offers some new features. It is now possible to reduce the flicker of artificial lighting. Besides the solution for sport events, the LDK 23HS Mk II is also applicable in studio applications. A factory upgrade will be available for the installed base.
At the German demo, signals from the Philips cameras were transmitted via MPEG-2 encoders from Tandberg and transmitters/receivers from AVS to the server system from EVS. New DCL transmission technology from AVS cancels ghost pictures and colour deviation. With the new DCL series generation 3, to be shown for the first time at NAB (on the Tandberg booth), transmitter and receiver housings are less spacious and picture quality is increased.
Finally, EVS announced CineStore, the digital cinema server that will be available in September. CineStore is compatible with the 24p signal for Barco, Christie and Digital Projection equipment based on DLP Cinema Technology from Texas Instruments. It can deliver high-quality images achieved through an advanced optimisation of MPEG parameters.