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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.
A) An error-detecting scheme which is the sum of the data values transmitted. The receiver computes the sum of the received data values and compares it to the transmitted sum. If they are equal, the transmission was error-free. b) Method used to verify the integrity of data loaded into the computer. c) A simple cheque value of a block of data, calculated by adding all the bytes in a block. It is easily fooled by typical errors in data transmission systems, so that for most applications, a more sophisticated system such as CRC is preferred.
Industry:Entertainment
Spurious signals occurring in the Y channel as a result of composite chroma signals being interpreted as luminance, such as “dot crawl” or “busy edges” on coloured areas.
Industry:Entertainment
A black and white test chart. It contains “chips” in varying intensities, that make up a grey scale. It is used to cheque the grey scale taking characteristics of a camera, including the parameter of gamma.
Industry:Entertainment
Assembler that runs on a processor whose assembly language is different from the language being assembled.
Industry:Entertainment
An artefact observed in composite systems employing quadrature modulation and frequency interleaving. Cross-color results from the multiplicities of line-scan harmonics in the baseband signal, which provide families of frequencies surrounding each of the main harmonic peaks.
These families become even more complex if there is movement in the scene luminance signals between scans. Since the interstices are, therefore, not completely empty, some of the information on the luminance signal is subsequently decoded as colour information. A typical visible effect is a moiré pattern.
Industry:Entertainment
Usually enables three-state drivers on the chip’s output lines. Most LSI chips have one or more chip selects. The CS line is used to select one chip among many.
Industry:Entertainment
The audio equivalent of the video dissolve where one sound track is gradually faded out while a second sound track simultaneously replaces the original one. See Mix.
Industry:Entertainment
Choose means make a choice to select an action that will take place, i.e., press the left mouse button to bring up a pop-up menu, move the cursor to highlight the command that you want to run, then release the button.
Industry:Entertainment
A test pattern consisting of vertical and horizontal lines used for converging colour monitors and cameras.
Industry:Entertainment
A) The depth or saturation of color. The saturation control adjusts the amplitude of colour of the switcher’s matte and background outputs.
b) The (M) NTSC or (B, D, G, H, I) PAL video signal contains two pieces that make up what you see on the screen: the black and white (luma) part, and the colour part. Chroma is the colour part. Chroma can be further broken down into two properties of color: hue and saturation.
Chroma can also be described as a matrix, block, or single pel representing one of the two colour difference signals related to the primary colours in the manner defined in the bit stream. The symbols used for the colour difference signals are Cr and Cb.
Industry:Entertainment
