Logitech 915-000030 User Manual - Page 56

Appendix B - Glossary Amplifier A stereo component that outputs to speakers, and increases the gain or level of an audio signal. An amplifier doesn't typically include a radio. Anamorphic views Also referred to as Enhanced for Widescreen, or Enhanced for 16:9. The process that horizontally shrinks a 16:9 image into a 4:3 space to convert images between widescreen and typical television image aspect ratio. Used on many DVDs. Aspect ratio The ratio of image width to image height. Common motion-picture ratios are 1.85:1 and 2.35:1. Television screens are usually 1.33:1 (also known as 4:3). HDTV is 1.78:1, or 16:9. A/V switch A device with several audio and video source inputs that sends a selected audio/video source input signal to an output device like speakers or a TV. DLP® (Digital Light Processing) Projector screen technology that relies on using individually controlled tiny mirrors (micro mirrors) to produce an image. Developed originally by Texas Instruments. DVD recorder (DVR) A standalone unit that resembles and functions very much like a VCR. Like a VCR, DVD recorders all have AV source inputs. It can also record TV shows. HDTV (High Definition The high-resolution form of television. HDTV has 1125 lines of resolution, Television) or more than five times the video information than that of a TV set, creating a much crisper, more detailed picture. Light controller A device that is connected to a set of lights and allows the lights to be powered or dimmed remotely. Mini-system A single unit that is some combination of the functionality of a DVD, VCR, radio, and amplifier. NTSC (National Television System(s) Committee) The standard video broadcast format used in North America. Output Device A device that produces the sound or picture, for example, a TV or speakers. 56