New variable video delays


Crystal Vision has launched four new variable video delays. Providing up to 10
seconds of 3Gb/s delay, 20 seconds in HD and 110 seconds in SD, the ViViD 3G range
is designed for matching any system delays, with 12 of these space-saving modules
fitting in 2U. New features appearing on a Crystal Vision video delay for the first time
include 3Gb/s support, signal timing, video proc-amp and integrated fibre

ViViD 3G and ViViD 3GS provide half a second of delay in 3Gb/s, one second in HD
and 5.5 seconds in SD. Where a longer delay is needed, ViViD 3G-20 and ViViD 3GS-
20 both give 10 seconds in 3Gb/s, 20 seconds in HD and 110 seconds in SD. This
means that the ViViD 3G range can be used to match any short or long system
delays, such as those caused by virtual studio graphics, MPEG encoders and decoders,
audio processing, HD radio links and satellite links, while the longer delay lines can
also find use as part of a profanity delay system. Having the delay adjustable in
increments of pixels, lines, frames and seconds makes it easy to get the exact delay

Explained Crystal Vision’s MD Philip Scofield: “We have supplied video delays to help
integrate chroma keyers into virtual studios for many years. As our customers have
found more uses for video delays, we have developed our range of products to suit
any requirement.’

The ViViD 3GS and ViViD 3GS-20 variants both include a framestore synchroniser
timed to an external Black and Burst or tri-level syncs analogue reference – thereby
providing a neat single board solution for applying a long delay to a video path and
locking the signal to a station reference at the same time.

Broadcast engineers can save money and rack space for signals that need to be
transported over longer distances by having fibre input or output straight into the
board, using either the FIP fibre option to receive an optical input or the FOP fibre
option to transmit an optical output using a Class I laser. A video proc-amp is
included for picture optimisation and to help maintain colour fidelity, with RGB and
YUV lift and gain adjustments. The entire video stream is delayed, with embedded
audio and ancillary data staying with the associated video – allowing use in
embedded areas.

The ViViD 3G range saves rack space by being 100mm x 266mm modules that fit in
the standard frames alongside any other product from the range, with up to 12 video
delays in 2U. Inputs and outputs are accessed via three frame rear modules – either
the standard RM41, the RM57 for fibre applications or the RM67 where relay bypass
protection is required in the event of power failure or board malfunction or removal.
Four delayed outputs are provided, potentially saving the need for a distribution
amplifier in the system.

Easy to set up and use, the flexible control options include board edge switches, an
integrated control panel on the frame, a remote control panel, SNMP or the Statesman
PC software. 16 presets allows different delay values to be assigned and then
recalled automatically by the studio control system. Signal monitoring is available,
with two GPI outputs reserved for alarm indication and with a number of alarms able
to be assigned. The alarms are input missing, video black, video frozen and input
audio missing – with reference not present and reference incompatible additionally
available on ViViD 3GS and ViViD 3GS-20.


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