Superhigh‐definition digital cinema distribution system with 8‐million‐pixel resolution
Takahiro Yamaguchi, Tatsuya Fujii, Mitsuru Nomura, Daisuke Shirai, Kazuhiro Shirakawa, 哲郎 藤井 · Systems and Computers in Japan · 2006
Abstract We developed a prototype superhigh‐definition (SHD) digital cinema system that can store, transmit, and display extrahigh‐quality movies with a resolution of 8 million pixels, using JPEG2000 coding algorithm. The spatial resolution on image quality is four times better than HDTV, and surpasses that of 35‐mm cinefilm. The system is comprised of three principal apparatus designed for SHD movies: a video server, a real‐time decoder, and a projector. The movie data digitized by scanning the cinefilm is compressed using JPEG2000 coding algorithm and stored in the video server in advance. Using Gigabit Ethernet (GbE) links and TCP/IP protocols, the server transmits the compressed digital movie data stream of 300 to 450 Mbps to a real‐time decoder. The decoder receives the compressed data stream, and outputs a raw, uncompressed, 10‐bit R/G/B digital video signal using a parallel‐processor mechanism in real time. The projector reproduces the SHD movie using three reflective LCD panels (D‐ILA), one for each 10‐bit R/G/B color, while receiving the raw digital video signal through the special video interfaces. This system enables us to distribute digital cinema of original 35‐mm cinefilm quality via the GbE network. © 2006 Wiley Periodicals, Inc. Syst Comp Jpn, 37(4): 35–44, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/scj.20465