e compressed video. microwave Radio transmission above 1 GHz used for transmitting communications signals, including video pictures, between various sites using dish aerials. middleware Middleware is a layer of software that provides the services required to link distributed pieces of an application across a network, typically in a client/server environment. Middleware is transparent, hiding the fact that components of an application are distributed. It helps developers to overcome the difficulties of interfacing application components into heterogeneous network environments. Multipurpose Internet Mail Extension. Developed and adopted by the Internet Engineering Task Force, this applications protocol is designed for transmitting mixed-media files across TCP/IP networks. mixing The process of combining separate sound and/or visual sources to make a smooth composite. Video Communication: the Whole Picture modulation Alteration of the amplitude, frequency or phase of an analog signal by a different frequency in order to impress a signal onto a carrier wave. Also can be used in digital signaling to make multiple signals share a single channel. In the digital realm, this is generally achieved by dividing a channel into time slots, into which each separate signal contributes bits in turn. moiré In a video image, a wavy pattern caused by the combination of excessively high frequency signals; the mixing of these signals results in a visible low frequency that looks a bit like French watered silk, after which it is named. monitor A precision display for viewing a picture. The word is now often applied to any TV set with video (as opposed to RF) input. A receiver-monitor is a set that is both a conventional TV used for viewing broadcast television but which also accepts video input from a computer. Also refers to computer displays. monochrome Reproduction in a single color, normally as a black and white picture. motion compensation An interframe coding technique that examines statistics of previous video frames to predict 