- المجال:
- 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.
Often used synonymously with the term tint. It is the dominant wavelength which distinguishes a color such as red, yellow, etc. Most commonly, video hue is influenced by a camera's white balance scene lighting.
Industry:Entertainment
A television system that offers picture quality substantially improved over conventional receivers, for signals originated in standard 525-line or 625-line format, by processing that involves the use of field store and/or frame store (memory) techniques at the receiver . One example is the use of field or frame memory to implement de-interlacing at the receiver in order to reduce interline twitter compared to that of an interlaced display . IDTV techniques are implemented entirely at the receiver and involve no change to picture origination equipment and no change to emission standards.
Industry:Entertainment
The fineness or coarseness of an image as it was digitized, measured in Dots Per Inch (DPI), typically from 200 to 400 DPI.
Industry:Entertainment
The degree of brightness (black and white portion of the video signal) at any given point in the video image. A video signal is comprised of luminance, chrominance (color information) and sync. If luminance is high, the picture is bright and if low the picture is dark. Changing the chrominance does not affect the brightness of the picture. May be measured in lux or foot-candles.
Industry:Entertainment
Communicating a higher-level model of the image than pixels is an active area of research. The idea is to have the transmitter and receiver agree on the basic model for the image; the transmitter then sends parameters to manipulate this model in lieu of picture elements themselves. Model-based decoders are similar to computer graphics rendering programs. The model-based coder trades generality for extreme efficiency in its restricted domain. Better rendering and extending of the domain are research themes.
Industry:Entertainment
Motion Picture Expert Group. Similar to spatial compression of JPEG, but adds frame-to-frame temporal compression. Compaction is typically 3 times better than video JPEG. Like the JPEG standard, it includes options for trading off between storage space and image quality.
Industry:Entertainment
MPEG-1 defines a set of international standards for the compression and decompression of digital video signals. MPEG-1 specifies a video resolution of 352-by-240 pixels compressed at 30 frames per second (fps) at a bandwidth of 150 kilobytes per second.
Industry:Entertainment
MPEG-2 is targeted for use with high-bandwidth broadcast applications specifying 720-by-480 playback at 60 fields per second at data rates ranging from 500 kilobytes per second to more than two megabytes per second. Essentially, MPEG-2 is digital television.
Industry:Entertainment
Refers to the delivery of information that combines different content formats (motion video, audio, still images, graphics, animation, text, etc.). A somewhat ambiguous term that describes the ability to combine audio, video and other information with graphics, control, storage and other features of computer-based systems.
Industry:Entertainment
A general term used in electronics to indicate any unwanted electrical signal, unrelated to the original signal. Video noise is generally manifested as snow, graininess, ghost images or picture static induced by external sources such as the national power-line grid, electric motors, fluorescent lamps, etc. In audio, noise is generally manifested as hiss and static.
Industry:Entertainment
