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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.
a) An independent signal path. Stereo recorders have two such channels. Quadraphonic ones have four.
b) A digital medium that stores or transports a digital television stream.
c) A term mainly used to describe the configuration of audio tracks. For Dolby Digital there are six channels (left, center, right, left rear, right rear and low frequency effects). For linear PCM and MPEG audio, there are eight channels. All DVD players are required to have a two-channel downmix output, which is a stereo version produced from the intrinsic channels on the disc if there are more than two channels on the disc.
Industry:Entertainment
A new format for putting full-length movies on a 5" CD using MPEG-2 compression for “much better than VHS” quality.
Also known as Digital Versatile Disc.
Industry:Entertainment
a) Having discrete states. Most digital logic is binary, with two states (on or off). b) A discontinuous electrical signal that carries information in binary fashion. Data is represented by a specific sequence of off-on electrical pulses. A method of representing data using binary numbers. An analog signal is converted to digital by the use of an analog-to-digital (A/D) converter chip by taking samples of the signal at a fixed time interval (sampling frequency). Assigning a binary number to these samples, this digital stream is then recorded onto magnetic tape. Upon playback, a digital-to-analog (D/A) converter chip reads the binary data and reconstructs the original analog signal. This process virtually eliminates generation loss as every digital-to-digital copy is theoretically an exact duplicate of the original allowing multi-generational dubs to be made without degradation.
In actuality of course, digital systems are not perfect and specialized hardware/software is used to correct all but the most severe data loss.
Digital signals are virtually immune to noise, distortion, crosstalk, and other quality problems. In addition, digitally based equipment often offers advantages in cost, features, performance, and reliability when compared to analog equipment.
Industry:Entertainment
A digital video image or segment that has been processed using a variety of computer compression algorithms and other techniques to reduce the amount of data required to accurately represent the video content.
Industry:Entertainment
A process used in both analog and digital image processing to reduce bandwidth. Filters can be designed to remove information content such as high or low frequencies, for example, or to average adjacent pixels, creating a new value from two or more pixels.
Industry:Entertainment
The number of images contained in a single second of a moving picture. Thirty FPS is considered full-motion video. Many proprietary digital video technologies produce only 15 FPS video. Film is 24 FPS, NTSC is 30 FPS and PAL/SECAM is 25 FPS.
Industry:Entertainment
A digital electronic device which synchronizes two or more video signals. The frame synchronizer uses one of its inputs as a reference and genlocks the other video signals to the reference's sync and color burst signals. By delaying the other signals so that each line and field starts at the same time, two or more video images can be blended, wiped and otherwise processed together. (A TBC takes this a step further by synchronizing both signals to a stable reference, eliminating time base errors from both sources.)
Industry:Entertainment
Video reproduction at 30 frames per second (NTSC-original signals) or 25 frames per second (PAL-original signals).
Industry:Entertainment
Rating of the fine detail (definition) of a TV picture, measured in scan lines. The more lines, the higher the resolution and the better the picture. A standard VHS format VCR produces 240 lines of horizontal resolution, while over 400 lines are possible with S-VHS, S-VHS-C, and Hi-8 camcorders.
Industry:Entertainment
With the HSB model, all colors can be defined by expressing their levels of hue (the pigment), saturation (the amount of pigment) and brightness (the amount of white included), in percentages.
Industry:Entertainment
