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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.
A drive that fits inside the workstation and connects to an internal port; it is never connected with a cable to a visible external port. An internal drive is occasionally referred to as a front-loading drive.
Industry:Software
a) A technique for taking a 2D image and applying (mapping) it as a surface onto a 3D object. b) Conversion of bytes (8 bits) to 2n-bit wide symbols. Thus n is the bit width for the I and Q quantization; e.g., at 64 QAM the symbol width is 2n = 6 bit, n = 3, i.e., I and Q are subdivided into 23 = 8 amplitude values each. c) Refers to the definition of memory for storing data used by a particular display mode. The range of addresses reserved for graphics information in IBM-compatible systems is from A000:0 to BFFF:F.
Industry:Software
a) Techniques for increasing apparent sharpness without increasing actual resolution. This usually takes the form of increasing the brightness change at edges. Since image enhancement has advanced continuously for nearly 50 years, ordinary NTSC pictures sometimes look better than the NTSC pictures derived from an HDEP source, particularly when these derived pictures are designed to be augmented by other signals in an ATV receiver. It is very difficult to enhance pictures for NTSC receivers and then unenhance them for receivers with augmentation.
b) Once the camera response has been made flat to 400 lines (by aperture correction), an additional correction is applied to increase the depth of modulation in the range of 250 to 300 lines (in an NTSC system), both vertically and horizontally. This additional correction, known as image enhancement, produces a correction signal with symmetrical overshoots around transitions in the picture. Image enhancement must be used very sparingly, if natural appearance is to be maintained.
Industry:Software
In a scanning standard, the number of raster lines per frame that are not required to contain blanking. The active vertical lines may include signals containing non-image information.
Industry:Software
A somewhat ambiguous term that describes the ability to combine audio, video, and other information with graphics, control, storage, and other features of computer-based systems. Applications include presentation, editing, interactive learning, games, and conferencing. Current multimedia systems also use mass storage computer devices such as CD-ROM.
Industry:Software
Name used by France’s Thomson group for some recently acquired holdings outside of France. International Thomson is a strong proponent of progressive-scan ATV and has proposed two such schemes for NTSC countries, both of which would offer a 16:9 aspect ratio and 60 frames per second. One would have 900 scanning lines (864 active), matching the number of scanning lines in International Thomson’s proposal for non-NTSC countries. The other would have 750 scanning lines (728 active), matching the digitization rates in the non-NTSC proposal.
Industry:Software
Term used to describe the function of indicating to the editor where the entry or exit of the edit will be done on the fly.
Industry:Software
A format for storing digital images. To save disk space, images are compressed in a binary file. The image format is contained in a file header which is read by all the programs. The header contains: the image name, the resolution, the type of image.
Industry:Software
Television images are scanned in a sequence of horizontal lines, beginning at the upper left corner, and reaching the bottom right corner at the end of the field. Thereupon the scan is returned to the upper left corner to begin the next field. As a consequence of the line structure, all television images are sampled vertically. Within a line, the signal may remain analog or be sampled digitally. A television line is also a measure of time, representing the interval allocated to one line. (In the U.S.: system 525/59.94/2:1, the line duration is 63.5 s). Television lines also function as a geometric measure, with resolution (both vertical and horizontal), for example, specified in terms of “lines per picture height.” Since both “black” and “white” lines of a resolution chart are counted, two television lines equal one cycle of the electrical waveform.
Industry:Software
A development proposal from Sony and Philips, now integrated in the DVD.
Industry:Software
