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- 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.
May be thought of as the front layer of video in a picture. Also used to describe the insert video (on 4100 series) of a key.
Industry:Entertainment
A device that allows the reformatting of a digital data stream originating from one sampling structure (lines per frame, pixels per line) into a digital data stream of another sampling structure for the purposes of recording or passing the original data stream through distribution devices designed to accommodate the latter structure. Since the data still represents the original sampling structure, this is not the same as standards conversion.
Industry:Entertainment
The process of preparing a disc for data storage by determining where data is to be placed and how it is to be arranged on disk.
Industry:Entertainment
A decoder is able to decode a bit stream coming from an encoder of a previous generation. A new coding standard is forward compatible with an existing coding standard if new decoders (designed to operate with the new coding standard) continue to be able to decode bit streams of the existing coding standard.
Industry:Entertainment
A) System in which redundancy is added to the message so that errors can be corrected dynamically at the receiver. b) Error control bits added to useful data in the QAM/QPSK modulator.
Industry:Entertainment
Information that is used for motion compensation from a reference picture at an earlier time in display order.
Industry:Entertainment
The arrangement by which four difference channels of sound may be recorded on quarter-inch-wide audio tape. These may be recorded as four separate and distinct tracks (monophonic) or two stereo pairs of tracks. Tracks 1 and 3 are recorded in the “forward” direction of a given reel, and Tracks 2 and 4 are recorded in the “reverse” direction.
Industry:Entertainment
Mathematically generated descriptions (images) which look like the complex patterns found in nature (e.g., the shoreline and topographic elevations of a land mass as seen from an aerial photograph). The key property of fractal is self-similarity over different domain regions.
Industry:Entertainment
The scattering of data over a disc caused by successive recording and deletion operations. Generally this will eventually result in slow data recall, a situation that is not acceptable for video recording or replay. The slowing is caused by the increased time needed to randomly access data. With such stores, defragmentation routines arrange the data (by copying from one part of the disc to another) so that it is accessible in the required order for replay. Clearly any change in replay, be it a transmission running order or the revision of an edit, could require further defragmentation.
True random access disc stores, able to play frames in any order at video rate, never need defragmentation.
Industry:Entertainment
A) A frame consists of all the information required for a complete picture. For interlaced scan systems, there are two fields in a frame. For progressive video, these lines contain samples starting from one time instant and continuing through successive lines to the bottom of the frame.
b) A complete picture composed of two fields. In the NTSC system, 525 interlaced horizontal lines of picture information in 29.97 frames per second.
In the PAL system, 625 interlaced horizontal lines of picture information in 25 frames per second. c) The metal cabinet which contains the switcher’s circuit boards. d) One complete video image, containing two fields. There are 30 frames in one second of NTSC video.
Industry:Entertainment
