- Отрасли:
- Number of terms: 20560
- Number of blossaries: 0
- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
The most popular oxide particle used as a magnetic recording medium produced from an oxide of pure iron.
Industry:Software
In a uniformly magnetized sample of magnetic material, the product of the maximum intrinsic flux density and the crosssectional area.
Industry:Software
A key where the “hole cutting” or key video is different from the “key filling” or insert video. This is most commonly used with character generators that provide these two outputs, and allows the character generator to create a key border that is wider and cleaner than internally bordered keys. Such signals may also come from a color camera that provides its own keying output or even a monochrome camera looking at an art card. An isolated key is always a luminance key, although composite chroma keys may be done with an isolated key source, ignoring the isolated input. AVC series switchers can defeat isolated inputs to standard type keys by turning key borders on. Also referred to as a Processed External Key.
Industry:Software
The maximum value, positive or negative, of the intrinsic flux density in a sample of magnetic material which is in a symmetrically, cyclically magnetized condition.
Industry:Software
A distortion of the picture carrier phase caused by changes in either the chrominance or luminance video signal levels. This distortion is described in degrees using the following definition: ICPM = acrtan (quadrature amplitude/video amplitude) The picture effects of ICPM will depend on the type of demodulation being used to recover the baseband signal from the transmitted signal. ICPM shows up in synchronously demodulated signals as differential phase and many other types of distortions, but the baseband signal is generally not as seriously affected when envelope detection is used. The effects of ICPM are therefore rarely seen in the picture in home receivers, which typically use envelope detection. However ICPM may manifest itself as an audio buzz at the home receiver. In the intercarrier sound system, the picture carrier is mixed with the FM sound carrier to form the 4.5 MHz sound IF.
Audio rate phase modulation in the picture carrier can therefore be transferred into the audio system and heard as a buzzing noise. An unmodulated 5 to 10 stairstep signal or unmodulated ramp can be used to test for this distortion.
Industry:Software
Audio-rate time code information that is stored on its own audio track. This audio-rate signal allows the editing system to track the position of the tape even at high shuttle speeds where VITC data could not be used.
Industry:Software
