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This topic comprises 2 pages: 1 2
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Topic: IMB (and IMS) comparisons
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Carsten Kurz
Film God
Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009
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posted 01-30-2013 04:53 AM
It's not so complicated.
Doremi builds their own server and IMB - they sell it in slightly adjusted versions for all series-II projectors (well, if you leave out the Solaria One).
External proprietary storage server/SMS ('ShowVault'). Connection is PCIe, but proprietary API. That means, Doremi IMB and ShowVault (or modified DCP-2000 or -2k4) must go together.
Doremi also builds the IMS1000 - that is an IMB including SMS function AND storage. It can go into every series-II projector. Currently, Barco and NEC endorse it for their S2k machines. It has it's own web based management console.
The Christie IMS fits only Christie projectors, as it needs the Christie TPC to be operated. Currently it's the only one that is able to ingest to and play from general purpose external NAS. I don't know if anyone is actually operating multiple Christie IMS from a single highperformance NAS. I consider that approach critical. I guess most cinemas would rather attach a dedicated small NAS to every Christie IMS.
The Solaria One is the only DCI machine that can only be operated with Christies own IMS. Nice integration factor, but no choices.
The Dolby IMB is the only one that uses the DCOSA standard (encrypted content over Ethernet). While it's nice to have a standard, I don't think we will ever see enough IMBs and servers of different brands to actually be able to choose/mix. The market seems to be just to small to make good use of a standard here. To my knowledge, the Dolby IMB is actually produced by USL. Dolby used to go with MicroM for a while I think. All of them are members of DCOSA.
The classification is not too complicated:
IMB - MediaBlock/decoding inside projector, Server/SMS and storage external
IMS - MediaBlock/decoding AND Server/SMS inside projector
Then IMS may have the variants with internal or external storage
BTW - the new Sony SRX-R515P uses a similiar approch as the Doremi IMB/ShowVault. The server XCT-S10 is an external RAID6 box with SMS, the projector contains only the MediaBlock, connection is through PCIe.
I could think of another variant, I think GDC uses it - external content storage, but only a rather small SSD inside the IMB/projector. That would only buffer a single feature, but generates low heat and can be filled very quickly and is more reliable than classic HDs.
Besides the main functions, all IMB/IMS may have other interesting features as well - HDMI inputs, HD-SDI I/O. These might be worth looking at them as well.
E.G. the Doremi IMB has HDMI 3D capabilities for consumer content (3D BluRay/3D-TV). It will also pass-through 8ch HDMI audio to the AES Audio outs and to the CP, which makes alternative content playback very easy.
The Doremi also has an option for internal Barco Auro 3D 11.1 decoding.
- Carsten
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