- 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.
A past reference picture is a reference picture that occurs at an earlier time than the current picture in display order.
Industry:Software
A feature of some videotape recorders that plays back the video or audio signal off of tape before it reaches the record heads, sends the signal to an external device for modification, and then applied the modified signal to the record heads so that it can be re-recorded onto the tape in its original position.
Industry:Software
The operation of shrinking or stretching video data between a system’s input and display. Normally, a combination of scaling and zooming.
Industry:Software
The harmonic content of a tone and the relative intensities of the different harmonics.
Industry:Software
Set of characters that occupies one storage location and is treated by the computer circuits as a unit. Ordinarily a word is treated by the control unit as an instruction and by the arithmetic unit as a quantity. See Byte.
Industry:Software
A picture that is coded using motion compensated prediction from past reference pictures.
Industry:Software
a) Scalability is the ability of a decoder to decode an ordered set of bit streams to produce a reconstructed sequence. Moreover, useful video is output when subsets are decoded. The minimum subset that can thus be decoded is the first bit stream in the set which is called the base layer. Each of the other bit streams in the set is called an enhancement layer. When addressing a specific enhancement layer, lower layers refer to the bit stream which precedes the enhancement layer.
b) A characteristic of MPEG-2 that provides for multiple quality levels by providing layers of video data. Multiple layers of data allow a complex decoder to produce a better picture by using more layers of data, while a more simple decoder can still produce a picture using only the first layer of data.
c) The degree video and image formats can be combined in systematic proportions for distribution over communications channels for varying capacities.
d) Scalability implies that it is possible to decode just a fraction of the information in a bit stream. In MPEG, we find SNR scalability, spatial scalability, and temporal scalability, and even in combination (hybrid scalability).
In connection with scalability we find the terms “lower layer,” which represents the basic information, and the “enhancement layer,” which represents the additional information. In case of hybrid scalability, up to three layers are found. All types of scalability may be used for transmission systems with split data channels with different error rate. The lower layer is transmitted on a channel with high protection rate, whereas the enhancement layer is transmitted on a channel with higher bit error rate. e) A feature of the Indeo video codec with which quality can be optimized during playback depending on the system resources being used to play the video.
Industry:Software
A proposal for an optical disc format from Toshiba, Time Warner and an alliance of several other manufacturers. The SD format is now integrated in the DVD format.
Industry:Software
A transport protocol in the Internet suite of protocols. UDP, like TCP, uses IP for delivery; however, unlike TCP, UDP provides for exchange of datagrams without acknowledgements or guaranteed delivery.
Industry:Software
a) To connect jack A to jack B on a patch bay with a patch cord.
b) A section of curved, non-planar surface; it can be likened to a rectangular rubber sheet which can be pulled in all directions. c) Section of coding inserted into a routine to correct a mistake or alter the routine. It is usually not inserted into the actual sequence of the routine being corrected, but placed somewhere else. A jump to the patch and a return to the routine are then provided.
Industry:Software
