- المجال:
- 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.
In video transmission, this may refer either to a signal or to the picture produced. a) Signal: Waves reflected from structures or other objects; waves which are the result of impedance or other irregularities in the transmission medium. b) Picture: “Echoes” observed in the picture produced by the reflected waves.
Industry:Software
A method by which material previously recorded on one track of a tape may be rerecorded on another track while simultaneously adding new material to it.
Industry:Software
The links that feed the signals to the transmission sites, such as terrestrial transmitters, cable head-ends, and satellite uplinks, from the studio or “Play-Out Center,” often via a switching center.
Industry:Software
Vertical lines in the picture where separately transmitted widescreen panels are joined to the center of the image. CBS proved that seams could be made invisible in its two-channel ATV transmission scheme.
Industry:Software
Technology by which hundreds of thousands of semiconductor devices are fabricated on a single chip.
Industry:Software
In 1992, Intel introduced the Peripheral Component interface bus specification. PCI, a high-speed interconnection system that runs at processor speed, became compatible with the VL bus by its second release in 1993. PCI includes a 64-bit data bus and accommodates 32-bit and 64-bit expansion implementations. PCI is designed to be processor-independent and is used in most high-speed multimedia systems. PCI is designed so that all processors, co-processors, and support chips can be linked together without using glue logic and can operate up to 100 MHz, and beyond. PCI specifies connector pinout as well as expansion board architecture.
Industry:Software
a) An image drawn on a CRT display remains visible only for a few milliseconds (the persistence of the screen phosphor), unless it is redrawn continuously. This process is called display refresh or screen refresh. Different displays use different refresh rates, but display refresh is normally required between 60 and 80 times a second to avoid any visible screen flickering. 75 times a second is a common refresh rate. In general, a higher refresh rate results in a more stable appearing display. b) Process of restoring the charge in a dynamic memory. Refresh logic must rewrite the contents of the complete RAM periodically (typically 2 ms), called refreshing the memory. See Dynamic Memory.
Regenerative Pulse Distribution Amplifier (Regenerative Pulse DA) – Reconstructs the signal and allows for adjustment of delay. Also see Linear Pulse DA.
Industry:Software
