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- Number of terms: 20560
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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.
Providing a device ID number or an actual branching address in response to the interrupt acknowledge signal. Allows each interrupt to automatically be serviced by a different routine.
Industry:Software
Digital images are represented by a stream, currently of 8-bit or 10-bit values representing the luminance and chrominance information, or a stream of 8-bit or 10-bit values representing the R', G', and B' information. Image processing sometimes involves multiplication of each digital word by: its proportional contribution to the processed image, a vector to relocate the pixel, an algorithm to change overall image size. To control these processes, additional information may be carried in the alpha channel synchronized to the image. As an example of the process, if an 8-bit sample is multiplied by an 8-bit factor, the product becomes a 16-bit word. At some point, this may have to be rounded or truncated back to 8 bits for the next operation. This introduces slight discrepancies in the result which may be visible as lagged edges, color bleeding, etc. If successive truncations are performed during a sequence of image processing steps, the artifacts frequently become increasingly visible.
Good practice calls for maintaining some or all of the “extra bits” throughout as much of the image processing as the facilities permit.
Experience has shown that digital image processing provides the fewest distracting artifacts when the R', G', B' signals are first converted to the linear R, G, B. For complex image processing, and for critical results, the 8-bit encoding may be replaced by 10 bits (or more if that can be accommodated).
Industry:Software
The physical workstation whose keyboard and mouse you are using, all hardware that is connected to that workstation, and all software that resides on that hardware or its removable media.
Industry:Software
A control circuit in which a non-video control signal is faded down as the other is faded up.
Industry:Software
Programmable device used to perform timing, counting, or delay functions. Usually treated as a peripheral.
Industry:Software
A term sometimes used to describe matching the resolution of a television system to the picture size and viewing distance (visual acuity); more often a term used to describe the matching or horizontal and vertical (and sometimes diagonal) resolutions. There is some evidence that the lowest resolution in a system (e.g., vertical resolution) can restrict the perception of higher resolutions in other directions. See also Square Pixels.
Industry:Software
For comparisons of perceived image quality among significantly different systems, a requirement frequently encountered in electronic production, the technique of intervalscaling is recommended by most students of psycho-physics. Interval scaling gives some indication of the magnitude of preference for one system over another. Observers are asked to place a numerical value upon the perceived differences (either in total or with regard to a specified characteristic such as noise, resolution, color rendition, etc.).
Industry:Software
The 3D function used to move or relocate an image.
Locate moves the image as if it were in three-dimensional space, even though the image is seen on a two-dimensional video screen.
Industry:Software
A switching device commonly used to switch and control a videoconferencing network allowing multiple sites to conference simultaneously.
Industry:Software
