- Industry:
- Number of terms: 20560
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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.
MPEG is one of many interframe algorithms that use certain key frames in a motion-prediction, interpolation system.
Industry:Software
The amount of magnetic influence/force within a specific area/field.
Industry:Software
Commonly used in the IF stage of a television receiver to separate the desired television channel from potential interference.
Industry:Software
Distortions involving signals in the 1 μsec to 64 μsec range. These distortions cause tilt in line-rate signal components such as white bars. The amount of distortion is expressed in IRE or as a percent of the line bar amplitude. Line time distortions can also be quantified in Kbar units. In large picture details, this distortion produces brightness variations between the left and right sides of the screen.
Horizontal streaking and smearing may also be apparent. Any test signal containing an 18 μsec, 100 IRE bar such as the FCC Composite or the NTC-7 Composite can be used for this measurement. See the discussion on Linear Distortions and Kbar units.
Industry:Software
Applications where JPEG compression or decompression is speeded up to be able to process 25 or 30 frames per second and is applied real-time to video. Even though a video signal is being processed, each field is still individually processed.
Industry:Software
A) Technique for increasing picture repetition rate without increasing base bandwidth by dividing a frame into sequential fields. When first introduced, it also had the characteristic of making the scanning structure much less visible. NTSC uses 2:1 interlace (two fields per frame).
b) A process in which the picture is split into two fields by sending all the odd-numbered lines to field one and all the even-numbered lines to field two. This was necessary when there was not enough bandwidth to send a complete frame fast enough to create a non-flickering image.
Industry:Software
That part of a videotape recorder which converts electric variations into magnetic variations and vice versa.
Industry:Software
The lowest sampling frequency that can be used for analog-to-digital conversion of a signal without resulting in significant aliasing. Normally, this frequency is twice the rate of the highest frequency contained in the signal being sampled.
Industry:Software
The movement between keyframes, changed with the Path soft key. There are five types of paths:
: BRK (Break) modifies Smooth motion by decelerating speed to zero at each keyframe (a break), then starting again.
: IGN (Ignore) allows selected parameter values to be ignored when calculating motion path.
: SMTH (Smooth) provides a curved path between keyframes. The effect speeds up gradually as it leaves the first keyframe, and slows down gradually until it reached the last keyframe.
: LIN (Linear) provides a constant rate of change between keyframes, with an abrupt change at each keyframe. Linear uses the shortest distance between two points to travel from one keyframe to another.
: HOLD stops all motion between keyframes. The result of the motion shows when the next keyframe appears. HOLD looks like a video “cut,” from one keyframe to the next.
Industry:Software
Picture defects caused by interlace. These include twitter, line crawl, loss of resolution, and motion artifacts. In addition to causing artifacts, interlaced scanning reduces the self-sharpening effect of visible scanning lines and makes vertical image enhancement more difficult to perform.
Industry:Software
