The Digital Fact Book - Quantel

DD-ILADigital Direct Drive Image Light Amplifier. Technology developed by Hughes-JVC for videoprojection up to large screen size. The scanned digital images are displayed by a CMOS chipwhich has a reflective liquid-crystal surface where electronic signals are directly addressedto the image modulator. The image pixel information is addressed to a matrix of ‘transistor’cells beneath the liquid crystal. As the liquid crystal responds to voltage level directly,the gray scale is determined by the value of voltage set on each pixel. So the reflectionof the projector lamp light focused on the chip produces an image. The technology hasbeen used up to cinema screen size to show digital movies with full 2K (2048 x 1536)QXGA resolution. 3840 x 2048 QHDTV (4 times HD image area) resolution D-ILA chipsare at the research stage. These are understood to be capable of projecting ‘full 35mmfilm quality’. This is far beyond today’s cinema experience.Website: www.jvcdig.com/technology.htmDiracSee: VC-2Discrete 5.1 AudioOften referred to as ‘5.1’, this reproduces six separate (discrete) channels – Left, Center,Right, Left Rear, Right Rear, and sub-woofer (the .1). All the five main channels have fullfrequency response which, together with a separate low-frequency sub-woofer, createa three-dimensional effect. Discrete 7.1 Audio is similar but includes more speakers.Discrete 5.1 audio is made available with many HD television broadcasts and is specifiedon HD DVD and BD media.See also: Dolby DigitalDisk drivesSee Hard disk drive, Optical disks64