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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
Bit-rate reduction of an image signal, by an algorithm recognising the high degree of correlation ascertainable in specific images. The reproduced image does not replicate the original when viewed in direct comparison, but the losses are not obvious or recognisable under the intended display conditions. The algorithm may apply transform coding, predictive techniques, and other modelling of the image signal, plus some form of entrophy encoding. While the image appears unaltered to normal human vision, it may show losses and artefacts when analysed in other systems (i.e., chroma key, computerised image analysis, etc.). The lost information cannot be regenerated from the compressed bit stream.
Industry:Entertainment
Conventional terrestrial television broadcasting, the most technically constrained delivery mechanism for ATV, faced with federal regulations and such potential problems as multipath distortion and co-channel interference.
Industry:Entertainment
The complete television blanking signal composed of both line rate and field rate blanking signals. See Line Blanking and Field Blanking.
Industry:Entertainment
One who controls the compression process to produce results better than would be normally expected from an automated system.
Industry:Entertainment
Broadcast WAV Format is an audio file format based on Microsoft’s WAV Format that carries PCM or MPEG encoded audio. BWF adds the metadata, such as a description, originator, date ,and coding history, needed for interchange between broadcasters.
Industry:Entertainment
A) Also known as encoded chroma key. A chroma key which is developed from a composite video source, i.e., off of tape, rather than the components, i.e., RGB, R-Y, B-Y. b) A chroma key wherein the keying signal is derived from a composite video signal, as opposed to an RGB chroma key. See Chroma Key.
Industry:Entertainment
A) Any row of video crosspoints that allow selection of various sources to be selected, and the associated row of buttons for such selection.
Buses are usually associated with a given M/E or the DSK although they may be independent as in aux buses. Also, any row of video or key source selections which may or may not be selected by push buttons on a bus row. For example, key video selections on Ampex switchers appear on buses which are accessed and selected by keypads. Due to the fact that there is no associated row of buttons, this arrangement is called a “phantom bus.” b) A parallel data path in a computer.
Industry:Entertainment
An analogue device that reduces the dynamic range of a signal by either reducing the level of loud signals or increasing the level of soft signals when the combined level of all the frequencies contained in the input is above or below a certain threshold level.
Industry:Entertainment
An organisation which assembles a sequence of events or programmes to be delivered to the viewer based upon a schedule.
Industry:Entertainment
