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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.
When the information is obtained from a continuously varying source, and the information is being transmitted continuously without buffering, it is exchanged at the real-time bit rate. Within the production sequence, it is actually only the image capture (i.e., camera and its recording system) that is required to be in real-time. The balance of production, including post-production operations, can be at a fraction of realtime if a more desirable result is achieved. (Subsequent to production, the final display must, of course, also be in real-time.)
Industry:Entertainment
The result of two devices trying to use a shared transmission medium simultaneously. The interference ruins both signals, requiring both devices to retransmit the data lost due to collision.
Industry:Entertainment
The bit rate required of a recorder mated to a video camera or functioning in the origination, post-production, or distribution is generally greater than the concurrent bit rate, real-time because of the error correction designed into the recording format. This “overhead” may increase the bit rate, sometimes by as much as one-third, and frequently sets a practical limit in systems design. Examples in the following table are intended only to clarify the definition. They indicate the range of some systems currently considered and a first estimate of their challenges.
Industry:Entertainment
Bit-wise transmission of digital video down a single conductor such as coaxial cable. May also be sent through fiber optics. This standard is covered under ITU-R BT.656 (CCIR 656).
Industry:Entertainment
a) A circuit that generates a full-field solid color for use as a background in a video picture. b) A device that produces a full-frame color, normally used as a background for various graphics effects, the output of which is selectable on the last button of all switcher buses.
Industry:Entertainment
The condition in a message processing unit where the bit-rate clock has gained (or lost) more than 180 degrees phasing with respect to synchronism with the binary message bits.
Industry:Entertainment
a) Occurs when word flaming is lost in a serial signal so that the relative value of a bit is incorrect. This is generally reset at the next serial signal, TRS-ID for composite and EAV/SAV for component.
b) The erroneous reading of a serial bit stream when the recovered clock phase drifts enough to miss a bit. c) A phenomenon which occurs in parallel digital data buses when one or more bits gets out of time in relation to the rest. The result is erroneous data. Differing cable lengths is the most common cause.
Industry:Entertainment
Originally designed to test early color camera encoders, it is commonly (albeit incorrectly) used as a standard test signal.
The saturated color bars and luminance gray bar are usually used to check monitors for color accuracy. The saturated color bars are a poor test of any nonlinear circuit or system and at best, show video continuity. Testing a video system using color bars is analogous to testing an audio system using a simple set of monotonal frequencies. Many color TV test signals have been developed to accurately assess video processing equipment such as ADCs, compressors, etc.
Industry:Entertainment
a) A continuous series of bits transmitted on a line. b) A binary signal without regard to grouping according to character.
Industry:Entertainment
