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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.
Technique that eliminates redundant frames when converting film material (24 fps) into NTSC 930 fps).
Industry:Software
Using magnetic tape as a storage medium for a brief period of time to delay the playback of a signal. Delay time equals the distance between the record and playback heads divided by the tape speed.
Industry:Software
Viewpoint defines the location of the viewer’s eye in the 3D world, as a (x, y, z) triplet of numbers. To define what is finally seen, the “view direction” must also be known.
Industry:Software
This clock divides the incoming horizontal line of video into pixels. The pixel clock is very stable relative to the incoming video or the picture will not be stored correctly. The higher the frequency of the pixel clock, the more pixels that will appear across the screen.
Industry:Software
Video format developed to allow the storage and transmission of digital video. The 625/50 SIF format has a resolution of 352 x 288 active pixels and a refresh rate of 25 frames per second. The 525/59.94 SIF format has a resolution of 352 x 240 active pixels and a refresh rate of 29.97 frames per second. MPEG-1 allows resolutions up to 4095 x 4095 active pixels, however, there is a “constrained subset” of parameters defined as SIF. The computer industry, which uses square pixels, has defined SIF to be 320 x 240 active pixels, with a refresh rate of whatever the computer is capable of supporting.
Industry:Software
Trellis coding is a source coding technique that has resulted in numerous publications and some very effective source codes.
Unfortunately, the computational burden of these codes is tremendous and grows exponentially with the encoding rate. A trellis is a transition diagram, that takes time into account, for a finite state machine. Populating a trellis means specifying output symbols for each branch, specifying an initial state yields a set of allowable output sequences. A trellis coder is defined as follows: given a trellis populated with symbols from an output alphabet and an input sequence x of length n, a trellis coder outputs the sequence of bits corresponding to the output sequence x that maximizes the SNR of the encoding.
Industry:Software
An excessive response to a unidirectional signal change.
Sharp overshoots are sometimes referred to as “spikes.”
Industry:Software
Used to provide the source current for open-collector and three-state logic gates or a termination for unused inputs. Pulls the voltage level up when no other device is driving the line.
Industry:Software
