Audiovisual Engineering Dictionary
An authoritative glossary of acronyms, display technologies, and proprietary protocols used in professional projection, cinema, and simulation. Designed for engineers and integrators.
Display Technologies
Understanding the fundamental imaging engines (chips) powering modern projection.
DLP IMAGING
Digital Light Processing. A proprietary technology developed by Texas Instruments using a Digital Micromirror Device (DMD). It is a reflective technology known for high contrast, fast pixel response times, and sealable optical architectures. It is the industry standard for high-brightness digital cinema (Barco Series 2/4) and rental projectors due to its resistance to color degradation.
3LCD IMAGING
Three-Chip Liquid Crystal Display. A transmissive technology where light passes through liquid crystal panels (Red, Green, Blue) before being recombined in a prism. While offering high color brightness, the organic polarizers and panels can degrade over time (“yellowing”) if subjected to high heat or UV, limiting their use in 24/7 industrial simulation compared to DLP.
LCoS IMAGING
Liquid Crystal on Silicon. A reflective technology that combines LCD and DLP principles. Liquid crystals are applied to a reflective silicon backplane. It offers extremely high pixel density (no “screen door” effect) and native contrast, making it popular in high-end home cinema, though typically lower brightness than 3-chip DLP.
SXRD IMAGING
Silicon X-tal Reflective Display. Sony's proprietary implementation of LCoS technology. Widely used in their residential and cinema projectors. Known for deep blacks and smooth pixel structures but requires careful thermal management to prevent panel degradation over years of service.
Light Sources & Illumination
The engine behind the image — from legacy xenon lamps to solid-state lasers.
Xenon LAMP
High-intensity discharge lamp filled with xenon gas. Produces a broad, continuous spectrum closely matching daylight (5600K–6300K). Historically the standard for digital cinema (DCI). Requires periodic replacement (500–3000 hours) and poses UV/pressure safety risks during handling.
Laser Phosphor SOLID STATE
A hybrid solid-state technology where blue laser diodes excite a rotating phosphor wheel to produce yellow light, which is then split into red and green. The remaining blue laser light is used directly. Offers significantly longer life (20,000+ hours) and consistent brightness over time compared to xenon.
RGB Laser SOLID STATE
Pure laser architecture using individual Red, Green, and Blue laser diodes. Provides the widest color gamut (exceeding DCI-P3 and approaching Rec. 2020), highest brightness, and longest operational life. Found in premium Barco cinema (Series 4) and large-venue projectors.
LED SOLID STATE
Light Emitting Diode. Used in smaller professional and residential projectors. Lower brightness than laser but offers instant on/off, long life, and minimal heat output. Common in Barco's residential (Pulse) line.
Digital Cinema Standards
Industry specifications governing commercial cinema exhibition worldwide.
DCI STANDARD
Digital Cinema Initiatives. A joint venture of the major motion picture studios that established the specification for digital cinema. DCI compliance covers resolution (2K/4K), color gamut (XYZ), compression (JPEG 2000), encryption, and audio requirements.
DCI-P3 COLOR
The color space defined by the DCI specification for digital cinema projection. Wider than sRGB/Rec. 709 but narrower than Rec. 2020. All commercial cinema projectors must be capable of reproducing the full DCI-P3 gamut.
JPEG 2000 COMPRESSION
Wavelet-based image compression standard used for DCI-compliant digital cinema packages (DCPs). Offers visually lossless quality at high compression ratios and supports 12-bit color depth per channel.
DCP FORMAT
Digital Cinema Package. The standardized file format for delivering digital cinema content. Contains encrypted image sequences (JPEG 2000), audio, and subtitle tracks, along with composition playlist and packing list XML files.
Connectors & Signal Formats
Physical and protocol interfaces for video, audio, and control signals.
HDMI CONNECTOR
High-Definition Multimedia Interface. The standard consumer/prosumer interface for carrying uncompressed video and audio. Barco residential and smaller event projectors feature HDMI 2.0/2.1 inputs supporting 4K UHD signals.
DisplayPort CONNECTOR
Digital display interface primarily used in professional AV and IT environments. Supports higher bandwidth than HDMI, enabling 4K at higher refresh rates and multi-stream transport (MST) for daisy-chaining.
SDI CONNECTOR
Serial Digital Interface. The professional broadcast standard for transmitting uncompressed, unencrypted digital video. Common in cinema, live event, and rental applications. Supports long cable runs (100m+ over coaxial).
HDBaseT CONNECTOR
A connectivity standard that enables transmission of uncompressed HD video, audio, Ethernet, control signals, and power over a single Cat5e/6 cable up to 100 metres. Widely used in installed AV systems to simplify cabling.