- Industry:
- 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.
Integrated circuits made of field effect transistors. All MOS devices originally used metal gate technology, but the term is used to describe silicon gate circuits as well.
Industry:Software
a) The video that fills a key. Also used to describe the key itself.
Insert for most keys is “self,” that is, a key that is filled with the same video that cuts the hole. Ampex switchers also allow “matte” fill with an internally generated color and “bus fill” where any bus source may be selected to fill the key. b) An edit mode meaning to record a new video over a certain section of an existing video where the entry and exit are both defined and no new time code of control track is recorded.
Industry:Software
Noise which manifests itself in a video picture as white snow, typically caused by one of the following situations: low signal level due to poor lighting conditions, poor video signal processing, low quality videotapes, excessively long video cables used without precompensation, dirt on the video recorder heads which interferes with reading and writing, over-enhancement of the video signal.
Industry:Software
Noisy video (e.g., video from low quality VTRs) is more difficult to code than the cleaner version of the same sequence. The reason is that the video encoder spends many bits trying to represent the noise as if it were part of the image. Because noise lacks the spatial coherence of the image, it is not coded efficiently.
Industry:Software
A system or scale used for measuring temperature. Absolute zero is 0° Kelvin or –273°C. The “color” of white light is expressed in terms of degrees Kelvin, the color of light emitted when an ideal object is heated to a particular temperature.
Industry:Software
One of the most recent developments of a magnetizable particle for magnetic tape, products from pure iron and having very high coercivity in the range of 850 to 1250 oersteds.
Industry:Software
The process of television post-production that combines audio and video signals on an existing control track.
Industry:Software
This distortion is also called differential luminance and is present if luminance gain is affected by luminance levels.
This amplitude distortion is a result of the system’s inability to uniformly process luminance information over the entire amplitude range.
The amount of luminance nonlinearity distortion is expressed as a percentage.
Measurements are made by comparing the amplitudes of the individual steps in a staircase signal as shown. The result is the difference between the largest and smallest steps, expressed as a percentage of the largest step. Measurements should be made at both high and low APL and the worst error should be quoted. In black and white pictures, luminance nonlinearity will cause pictures loss of detail in shadows and highlights which are caused by the crushing or clipping of the white or black portions of the signal. In color pictures, luminance nonlinearity will cause colors in the high luminance portions of the picture to be distorted.
Industry:Software
A table that allows for the determination of Chrominance to Luminance Gain and Delay errors. Refer to the discussion on Chrominance to Luminance Gain and Delay.
Industry:Software
Minimum circuitry required to allow the microprocessor to function.
Usually consists of the microprocessor, clock circuit, interrupt and DMA control lines, and power supply.
Industry:Software
