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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.
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 disk 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 disk 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 disk stores, able to play frames in any order at video rate, never need defragmentation.
Industry:Entertainment
a) A block of digital memory capable of buffering a frame of video. The amount of memory required for a frame buffer is based on the video being stored. For example to store a 640 X 480 image using the RGB color space with eight bits per color, the amount of memory required would be: 640 x 480 x 3 = 921,600 bytes. b) A frame buffer is a digital frame store, containing a large chunk of memory dedicated to pixel memory, at least one complete frame’s worth. All the pixels in the buffer have the same depth. Each bit of depth is called a bit plane. Frame buffers can use the bit planes in a variety of ways. First, a pixel’s bits can store the RGB values of colors. This simple method is called full-color mode. In full-color mode, it is common to refer to the red plane, or the blue or green plane, meaning the bits reserved for specifying the RGB components of the pixel.
Full-color systems may also have an alpha channel, which encodes the transparency of each bit. The alpha channel is like a matte or key of the image. Alternately, the bits can store a color number, which selects the final color from a color map. Finally, some bit planes may be reserved for use as overlay planes.
Industry:Entertainment
Taking one frame of video and storing it on a hard drive for use in various video effects.
Industry:Entertainment
DCT coding in which every block consists of lines from both fields which are interlaced. The chrominance blocks in the 4:2:0 format always have to be coded by using frame DCT coding.
Industry:Entertainment
The rate at which a complete frame is scanned, nominally 30 frames per second.
Industry:Entertainment
A picture in which the two fields in a frame are merged (interlaced) into one picture which is then coded.
Industry:Entertainment
a) The rate at which frames of video data are scanned on the screen. In an (M) NTSC system, the frame rate is 29.97 frames per second. For (B, D, G, H, I) PAL, the frame rate is 25 frames per second.
b) The number of frames per second at which a video clip is displayed.
c) The rate at which frames are output from a video decoding device or stored in memory. The NTSC frame rate is 30 frames/second while some graphics frame rates are as high as 100 frames/second.
Industry:Entertainment
