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特意查了下wikipedia(维基百科)关于Digital Cinema的介绍
目前的数字电影放映技术,获得DCI官方认可的技术只有:TI的 DLP 和 SONY的SXRD两种。 DLP-Cinema系统 TI只授权给了:科视、Barco、NEC三家厂商制造。而SXRD技术则只有SONY自己制造(没有进行对外技术授权)。
所以目前提供数字电影放映系统的只有这四家企业。
而类似于其它厂商的的 JVC的D-ILA 和 Epson的3LCD 技术制造的产品由于都没有获得DCI组织的官方认可,所以都没有资格部署在数字电影院中。
下面的英文原文资料介绍非常清楚
http://en.wikipedia.org/wiki/Digital_cinema
Digital projection
There are currently two types of projectors for digital cinema. Early DLP projectors, which were deployed primarily in the U.S., used limited 1280×1024 resolution or the equivalent of 1.3 MP (megapixels). They are still widely used for pre-show advertising but not usually for feature presentations. The DCI specification for digital projectors calls for two levels of playback to be supported: 2K (2048×1080) or 2.2 MP at 24 or 48 frames per second, and 4K (4096×2160) or 8.85 MP at 24 frames per second.
Three manufacturers have licensed the DLP Cinema technology developed by Texas Instruments (TI): Christie Digital Systems, Barco, and NEC. Christie, long established in traditional film projector technology, is the maker of the CP2000 line of projectors—the most widely deployed platform globally (approximately 5,500 units in total). Barco launched the DP-series of 2K DCI-compliant Digital cinema projectors; next to this Barco designs and develops visualization products for a variety of selected professional markets. NEC manufactures the Starus NC2500S, NC1500C and NC800C 2K projectors for large, medium and small screen respectively and the Starus Digital Cinema Server system, as well as other equipment to connect PCs, analog/digital tape decks and satellite receivers, DVD, and off-air broadcast, etc. for pre-show and special presentations. While NEC is a relative newcomer to Digital Cinema, Christie is the main player in the U.S. and Barco takes the lead in Europe and Asia.[citation needed] In addition Digital Projection Incorporated (DPI) designed and sold a few DLP Cinema units when TI's 2K technology first debuted but then abandoned the D-Cinema market while continuing to offer DLP-based projectors for non-cinema purposes. Although based on the same 2K TI "light engine" as those of the major players they are so rare as to be virtually unknown in the industry. As of January, 2009, there are more than 6,000 DLP-based Digital Cinema systems installed worldwide, of which 80% are located in North America.
The other technology is made by Sony and is labeled "SXRD"(LCOS) technology. The projectors, SRXR220 and SRXR320, offer 4096x2160 (4K) resolution and produce four times the number of pixels of 2K projection. Included in the system is a playback server (LMT-300) along with the ability to show alternative content through the system's 2 input options. Sources could be anything from a Bluray player to satellite feeds, yet Sony's systems are priced competitively with the lower resolution 2048x1080 (2K) or 2.2 MP (megapixels) DLP projectors.
Other manufacturers have been developing digital projector technology, but these have not yet been deployed into cinemas and are not commercially available in versions that conform to the DCI specification. |
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