- Industrie:
- Number of terms: 20560
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- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
A) A response that is the same over a wide range of frequencies.
b) Capable of handling frequencies greater than those required for high-grade voice communications (higher than 3 to 4 kilohertz).
Industry:Entertainment
Video which exists in the form of three separate signals, all of which are required in order to completely specify the colour picture with sound. Most home video signals consist of combined (composite) video signals, composed of luminance (brightness) information, chrominance (color) information, and sync information. To get maximum video quality, professional equipment (Betacam and MII) and some consumer equipment (S-VHS and Hi-8) keep the video components separate.
Component video comes in several varieties: RGB (red, green, blue), YUV (luminance, sync, and red/blue) and Y/C (luminance and chrominance), used by S-Video (S-VHS and Hi-8) systems. All Videonics video products support the S-Video (Y/C) component format in addition to standard composite video.
Industry:Entertainment
Lossless compression requires that the reproduced reconstructed bit stream be an exact replica of the original bit stream. The useful algorithms recognise redundancy and inefficiencies in the encoding and are most effective when designed for the statistical properties of the bit stream. Lossless compression of image signal requires that the decoded images match the source images exactly. Because of differences in the statistical distributions in the bit streams, different techniques have thus been found effective for lossless compression of either arbitrary computer data, pictures, or sound.
Industry:Entertainment
A mechanism by means of which telephone companies will be able to carry television signals (and, probably ATV signals) digitally, probably via optical fibers.
ISDN systems are considered broadband if they carry at least 45 Mbps, the DS3 rate, currently used for delivery of broadcast television signals. If and when B-ISDN reaches homes it will be a powerful competitor to other delivery mechanisms, potentially able to perform a computer-television function.
Industry:Entertainment
A television system in which chrominance and luminance are combined into a single signal, as they are in NTSC; any single signal comprised of several components.
Industry:Entertainment
Bit-rate reduction of an image signal by powerful algorithms that compress beyond what is achievable in lossless compression, or quasi-lossless compression. It accepts loss of information and introduction of artefacts which can be ignored as unimportant when viewed in direct comparison with the original. Advantage is taken of the subtended viewing angle for the intended display, the perceptual characteristics of human vision, the statistics of image populations, and the objectives of the display. The lost information cannot be regenerated from the compressed bit stream.
Industry:Entertainment
A nebulous term used to describe the output of a manufacturer’s product no matter how bad it looks.
Industry:Entertainment
An encoded video signal, such as NTSC or PAL video, that includes horizontal and vertical synchronising information.
Industry:Entertainment
A small reference packet of the subcarrier sine wave, typically 8 or 9 cycles, which is sent on every line of video. Since the carrier is suppressed, this phase and frequency reference is required for synchronous demodulation of the colour information in the receiver. Refer to the Horizontal Timing discussion.
Industry:Entertainment
