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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.
In rotational extrusion, the silhouette is rotated about an axis, like using a lathe to create a fancy table leg. The cross-section of an object created this way is circular. Such objects are often called “solids of revolution.”
Industry:Software
Using the ITU-R 601 4:2:2 digital coding standard, each picture occupies a large amount of storage space, especially when related to computer storage devices such as DRAM and disks. So much so that the numbers can become confusing unless a few benchmark statistics are remembered. Fortunately, the units of mega, giga, tera, and penta make it easy to express the very large numbers involved. The capacities can all be worked out directly from the 601 standard. Bear in mind that sync words and blanking can be regenerated and added at the output, only the active picture area need be stored.
Industry:Software
The frequency band (300 MHz to 3,000 MHz). In television, UHF refers to a subset of that band, the range from 470 MHz to 890 MHz, once allocated to TV channels 14 through 83.
Demands of other transmission services (such as police radios) have eaten into both the lower and the upper reaches of the UHF TV allocations.
Taboos eliminate still more channels. Nevertheless, the UHF TV band is seen by many ATV proponents as the most likely place to situate receiverincompatible and augmentation ATV channels.
Industry:Software
Type of modulation for digital signals (DVB-S). The digital, serial signal components I and Q directly control phase shift keying. The constellation diagram with its four discrete states is obtained by representing the signal components using the I and Q signals as coordinate axes. Due to the high nonlinear distortion in the satellite channel, this type of modulation is used for satellite transmission.
The four discrete states all have the same amplitude that is why nonlinear amplitude distortions have no effect.
Industry:Software
a) The ratio of signal to noise expressed in dB. In general, the higher the signal to noise ratio the better. If there is a low signal-to-noise ratio, the picture can appear grainy, snowy, and sparkles of color may be noticeable. Equipment will not be able to synchronize to extremely noisy signals. b) It may not be possible to directly compare SNRs for ATV and for NTSC as the eye’s sensitivity to noise varies with the detail of the noise. c) The measurement of the dynamic range of a piece of equipment, measuring from the noise floor (internally generated noise) to the normal operating level or the level prior to limiting.
Industry:Software
The maximum video signal excursion in the white direction permitted by the system.
Industry:Software
This term is a purely Cubicomp buzzword. As used within their software and documentation, a position word is the set of numbers that orient a single keyframe. Each keyframe gets a position word, and a position word stores the translations, rotations, and zooms that were used to create the view of the world seen in the keyframe. Position words do triple duty: They define the current view of the world. A position word is made up of nine numbers: x, y, and Z rotation; x, y, and z translation; x and y offsets; and scale; They define keyframes (since a keyframe is a particular view of the world; Similarly, in-betweens are automatically generated views of the world that are in between keyframes.
Industry:Software
When animators want to capture the realism of a live object’s motion, a technique called rotoscoping is used. In traditional film animation, film footage of the motion is rear-projected, one frame at a time, onto a frosted screen that is mounted on the animators worktable.
The artist traces the frames onto cels. This process is called rotoscoping.
The video equivalent is called keying or matting. Digital rotoscoping has recently become possible. Here, the frame buffer is used to hold the incoming action, and software picks out the image of interest from the background, assuming the subject was shot against a solid color.
Industry:Software
