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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.
Video signals in which a continuously variable voltage or current (rather than a set of digital numbers) represents a pixel.
Industry:Entertainment
An interface between a display controller and a display in which pixel colours are determined by the voltage levels on three output lines (RGB). Theoretically, an unlimited number of colours can be supported by this method (24 bits per pixel allows 16,777,216 colors). The voltage level on any line varies between zero volts (for black) to about 700 millivolts (for maximum brightness).
Industry:Entertainment
A video monitor which accepts analogue signals. Several types of inputs are accepted by analogue monitors: composite video, RGB & sync, Y/C, YUV and any combination of these formats. The signals transmit- ted to an analogue monitor are usually between 0 and 1 V and use 75-ohm coaxial cables.
Industry:Entertainment
The common form of magnetic recording where the recorded waveform signal maintains the shape of the original waveform signal.
Industry:Entertainment
A change in picture geometry to compress one direction (usually horizontal) more than the other. Anamorphic squeeze lenses made CinemaScope possible. Occasionally, when widescreen movies are transferred to video, an anamorphic squeeze will be used (usually only in credits) to allow the smaller aspect ratio of television to accommodate the larger movie aspect ratio. Some ATV proponents have suggested a gentle anamorphic squeeze as a technique to assist in aspect ratio accommodation.
Industry:Entertainment
Found on a large number of DVDs, anamorphic video squeezes a 1.78:1 picture shape into a 1.33:1 image area. If you view an anamorphic video image on a 1.33 set, the characters will look tall and thin. This format is designed for the 1.78 aspect ratio TV sets where the horizontal is stretched back out to the full width of the set.
Unsqueezing an anamorphic image on a 1.33 set is accomplished by squeezing the vertical size. The advantage of the anamorphic video system is 33% more vertical information in a widescreen picture.
Industry:Entertainment
A video frame that is used for prediction. I-frames and P-frames are generally used as anchor frames, but B-frames are never anchor frames.
Industry:Entertainment
A bit-stream location that serves as a random access point. MPEG I-frames are the most common anchor points.
Industry:Entertainment
For recording tape, the degree to which the magnetic tape oxide coating adheres to the base film.
Industry:Entertainment
Literally, without echoes. Anechoic refers to the absence of audio reflections. The closest thing to this situation in nature is the great outdoors, but even here there are reflections from the ground, various objects, etc. It is almost impossible to create a truly anechoic environment, as there is no such thing as a perfect sound absorber. At high frequencies, it is possible to create near-anechoic conditions, but the lower the frequency, the harder that is.
Industry:Entertainment
