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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.
This amounts to about 90% of the total picture area.
It is symmetrically located inside of the picture border. Home sets are overscanned.
The entire picture isn’t seen, the edges being lost beyond the border of the screen. Safe action area is designated as the area of the picture that is “safe” to put action that the viewer needs to see.
Industry:Software
a) The modulation sidebands of the color subcarrier contain the R-Y and B-Y information. For NTSC, the subcarrier frequency is 3.579545 MHz. For PAL the subcarrier is approximately 4.43 MHz. b) An auxiliary information carrier added to the main baseband signal prior to modulation. The most common example in television is the NTSC color subcarrier.
Many ATV schemes propose adding additional subcarriers to NTSC.
c) A sine wave which is imposed on the luminance portion of a video signal and modulated to carry color information. Subcarrier is also used to form burst. The frequency of the subcarrier is 3.58 MHz in NTSC and PAL-M and 4.43 MHz in PAL. d) The high-frequency signal used for quadrature amplitude modulation of the color difference signals.
Industry:Software
A mechanism defined in SMPTE 298M used to identify the type and encoding of data within a general purpose data stream or file.
Industry:Software
A PC port which receives or transmits data in byte or word form rather than bit form.
Industry:Software
a) The process of beginning to read and decode the coded bit stream at an arbitrary point. b) Access method in which each word can be retrieved in the same amount of time (i.e., the memory locations can be accessed in any order).
Industry:Software
Prior to the advent of multichannel television sound broadcasting, the only way to transmit a stereo television show to homes was by simultaneous broadcasting on TV and radio stations. Proponents of non-receiver compatible ATV schemes suggest the same technique to achieve compatibility with existing NTSC TV sets: The non-compatible ATV signal will be transmitted on one channel and a second channel will carry a standards-converted NTSC signal. It is sometimes suggested that such simulcast techniques of ATV transmission are more efficient than augmentation techniques since, when the penetration of ATV sets into households reaches some limit, the NTSC simulcast channel can be eliminated, conserving bandwidth. In Britain, an almost identical situation occurred when 625 scanning-line television replaced 405. For many years, all programming was simulcast in both line rates with 405 eventually eliminated.
Industry:Software
These instruments provide a variety of known test and synchronization signals for the characterization of television systems.
Industry:Software
This allows the material positioning of video images to be checked. Both safe title and safe action boundaries are included. This signal can be keyed by any switcher or special effects generator that incorporates the luminance keying function.
Industry:Software
