- Settore:
- 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 glass strand designed to carry light in a fashion similar to the manner in which wires carry electrical signals. Since light is electromagnetic radiation of tremendously high frequency, optical fibers can carry much more information than can wires, though multiple paths through the fiber place an upper limit on transmission over long distances due to a characteristic called pulse dispersion. Many feel that the wide bandwidth of an optical fiber eliminates the transmission problems associated with the high base bandwidth of HDEP schemes. CATV and telephone companies propose connecting optical fibers directly to homes.
Industry:Software
A time stamp in the transport stream from which decoder timing is derived.
Industry:Software
The standard based on a 270 Mbps transfer rate. This is a 10-bit, scrambled, polarity independent interface, with common scrambling for both component ITU-R 601 and composite digital video and four channels of (embedded) digital audio. Most new broadcast digital equipment includes SDI which greatly simplifies its installation and signal distribution. It uses the standard 75-ohm BNC connector and coax cable as is commonly used for analog video, and can transmit the signal over 600 feet (200 meters) depending on cable type.
Industry:Software
The overall light-in/light-out characteristic of a television system, from camera through receiver. In an ideal system, the gamma should be one. In practice, it appears to be about 1.4.
Industry:Software
A more realistic and time-consuming type of shading, Phong shading actually calculates specular reflections.
Industry:Software
The term “reserved_future_use,” when used in the clause defining the coded bit stream, indicates that the value may be used in the future for ETSI defined extensions. Unless otherwise specified, all “reserved_future_use” bits shall be set to “1.”
Industry:Software
Spectrophotometry determines the spectral transmittance and the spectral reflectance of objects … to compare at each wavelength the radiant flux leaving the object with that incident upon it. A spectrophotometric match thus occurs only when the two objects being compared are identical in their color structure. Such a match will be maintained regardless of viewing conditions. Spectrophotometric matches are seldom encountered and rarely necessary; in practice, the usual objective is to achieve a metameric match. Metameric matches, however, appear identical only under one set of specified viewing conditions.
Industry:Software
Refers to geometric motion or change to an object’s orientation (i.e., translate, rotate, scale).
Industry:Software
Used to select from a list of related items. The selected option box has a black dot. (One item in the group must be selected.)
Industry:Software
SMPTE 305M. Allows fasterthan- real-time transfers between various servers and between acquisition tapes, disk-based editing systems, and servers, with both 270 Mb and 360 Mb, are supported. With typical real-time compressed video transfer rates in the 18 Mbps to 25 Mbps range, SDTI’s 200+ Mbps payload can accommodate transfers up to four times normal speed. The SMPTE 305M standard describes the assembly and disassembly of a stream of 10-bit words that conform to SDI rules. Payload data words can be up to 9 bits.
The 10th bit is a complement of the 9th to prevent illegal SDI values from occurring. The basic payload is inserted between SAV and EAV although an appendix permits additional data in the SDI ancillary data space as well. A header immediately after EAV provides a series of flags and data IDs to indicate what is coming as well as line counts and CRCs to check data continuity.
Industry:Software
