03.06.2012 10:16 AM
BBC Taps Crystal Vision for Studio Upgrade
LONDON, U.K.: BBC
Studios and Post Production has upgraded its Studio Three at Television Centre
in London with Crystal Vision supplying 133 of the interface boards purchased
by UK systems integrator ATG Broadcast. The studio is the second studio to be
designed for full 1080p 3Gb/s HD-SDI. The upgrade allows for 1080p production
with minor changes to the vision monitoring and camera channels.
BBC purchased 25 synchronizer boards the new design,
including 22 Crystal Vision multifunctional synchronizer SYNNER-E 3G boards.
The new boards, which combine a video synchronizer, tracking audio delay,
embedder, de-embedder and audio processor for four groups of audio with
optional fibre I/O on one board, have been used to synchronize and de-embed all
outside sources and embed and synchronize all VT feeds. The three Crystal
Vision SYN HD synchronizers that have also been supplied have been used as line
synchronizers for monitor feeds and the mixer bypass to help prevent switching
flashes due to the mixer delay.
Eight of Crystal Vision's Up-Down-A 3G up/down/cross
converters and six of the Up-Down-AS 3G synchronizing up/down/cross converters
are being used for routing any conversion needs on the matrix, making them
available for any additional equipment.The up/down/cross converters can perform two different conversions
simultaneously and give out co-timed dual outputs that remain unchanged in
format even when the input standard changes, with the Up-Down-AS 3G variant
including two synchronizers downstream of the converter to give a continuous
clean output in the two formats. They also include motion adaptive video
de-interlacing, four group embedded audio handling, aspect ratio conversion and
integrated fibre connectivity. 22 Q-Down123 short-delay broadcast down converters
are being used for the down conversion of SD and PAL feeds for monitors on the
studio floor. Known for its high quality output, short processing delay and
flexible outputs, Q-Down123 provides two reclocked input loop-throughs along
with three Standard Definition outputs that can be configured as mixtures of
SDI, composite, Y/C, YUV and RGB.
Crystal vision supplied 39 distribution boards, made up
of 22 VDA110M HD analog video distribution amplifiers and 17 3GDA105C digital
video distribution amplifiers. Pulses chains have been replaced within the
studio so these boards have replaced the old distribution amplifiers. BBC used 12
TANDEM HD-21 audio embedders/de-embedders—with their ability to embed, de-embed
and process up to two groups of analog or digital audio—to de-embed the VT
outputs to AES for the sound system within Studio Three.
For signal distribution, Crystal Vision supplied ATG
Broadcast with six ADDEC-210 analog to digital decoders. They have been used
within the studio for the conversion of DVDs to SDI.
Color correction for in-vision screens within Studio
Three is being done using two of Crystal Vision's CoCo 3G color correctors and
finally two FTX 3G fibre optic transmitters were supplied to feed all studio
outputs to floor wall boxes.
Crystal Vision regularly supplies to BBC Studios and Post
Production and they often move cards between areas, therefore by selecting
additional Crystal Vision equipment they have allowed for future flexibility.
The upgrade was completed in September 2011 and has seen shows such as
Britain's Best Dish, Harry Hill's TV Burp and Just a Minute being filmed there.