- 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.
Codes designed to assist the human memory. The microprocessor language consists of binary words, which are a series of 0s and 1s, making it difficult for the programmer to remember the instructions corresponding to a given operation. To assist the human memory, the binary numbered codes are assigned groups of letters (of mnemonic symbols) that suggest the definition of the instruction. For example, the 8085 code 100000 binary means load accumulator and is represented by the mnemonic LDA.
Industry:Software
Display system in which two interleaved fields are used to create one frame. The number of field lines is one-half of the number of frame lines. NTSC (M) systems have 262.5 lines per field. PAL (B, D, G, H, I) scan system have 312.5 lines per field. Each field is drawn on the screen consecutively, first one field, then the other. The field scanned first is called the odd field, the field scanned second is called the even field. The interlaced scanning system is used to prevent screen flicker. If frames were scanned on the screen without interlacing fields, the light level created by the first frame would decrease noticeably before the next frame could be scanned. Interlacing the fields allows the light level of the screen to be held more constant and thus prevent flicker.
Industry:Software
With a few exceptions, magnetic tape consists of a base film coated with magnetic particles held in a binder. The magnetic particles are usually of a circular shape and approach single domain size. See Gamma Ferric Oxide, Chromium Dioxide, and Cobalt Doped Oxide.
Industry:Software
Intervals between successive samples must be equal to or less than one-half the period of highest frequency.
Industry:Software
Equipment designed to be movable as a unit. A truck/van with all the necessary equipment to do photography/production on location.
Sometimes mobile units have cameras and VTRs within them and sometimes they are added for specific jobs.
Industry:Software
A television subcarrier at a frequency that is an odd multiple of one half the line rate (for example, the NTSC color subcarrier).
Such subcarriers fall onto a line in the spatio-temporal spectrum that is simultaneously high in vertical detail and in temporal detail, and is therefore not likely to be objectionably visible under normal viewing conditions.
Industry:Software
A measure of the minimum perceptible change in quality. A one JND change is accurately detected 75 percent of the time; a three JND change is accurately detected 99 percent of the time. There is a large number of JNDs of difference between NTSC as it is now received in U.S. homes and HDEP. This difference decreases in ATV systems in a hierarchical order. Some feel that a large number of JNDs will be necessary for consumers to purchase new TV sets.
Industry:Software
