- Industrie:
- 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.
Although it is customary to make all subjective judgments of image quality from the reference monitor display, the infinite possibilities for monitor adjustments have hampered reviewers in exercising effective programme control, and have introduced many disparities and great confusion. The SMPTE Working Group on Studio Monitors, S17.28, is completing work on three specifications intended to make the monitor display follow a known electro-optic transfer function and permit a reliable evaluation of the programme image quality.
Industry:Software
Register inside the microprocessor that contains the opcode for the instruction being executed.
Industry:Software
The absorption of energy by matter and its following emission as light. If the light follows and then completes itself quickly after absorption of the energy, the term fluorescence is used. If the process is of a longer and more persistent length, the term phosphorescence is applied.
Industry:Software
A) The process of editing using rapid retrieval (random access) computer controlled media such as hard disks, CD-ROMs and laser discs. Its main advantages are: allows you to reorganise clips or make changes to sections without having to redo the entire production and very fast random access to any point on the hard disc (typically 20-40 ms).
b) Nonlinear distinguished editing operation from the “linear” methods used with tape. Nonlinear refers to not having to edit material in the sequence of the final programme and does not involve copying to make edits.
It allows any part of the edit to be accessed and modified without having to re-edit or re-copy the material that is already edited and follows that point.
Nonlinear editing is also non-destructive, the video is not changed but the list of how the video is played back is modified during editing.
Industry:Software
The brightness of an area (subjectively) judged relative to the brightness of a similarly illuminated area that appears to be white or highly transmitting.
Industry:Software
The cable that connects the monitor to the workstation to transmit video signals. It has large connector on both ends.
Industry:Software
Total group of instructions that can be executed by a given microprocessor. Must be supplied to the user to provide the basic information necessary to assemble a program.
Industry:Software
A) The time rate of flow of light. b) The time rate of flow of radiant energy evaluated in terms of a standardised visual response.
Unless otherwise indicated, the luminous flux is defined for photopic vision.
The unit of flux is the lumen: the luminous flux emitted within unit solid angle by a point source having an isotropic luminous intensity of 1 candela.
Industry:Software
An editing system based on storage of video and audio on computer disk, where the order or lengths of scenes can be changed without the necessity of reassembling or copying the program.
Industry:Software
This measurement method allows for the evaluation of the CAV luminance signal gain and for making chrominance/ luminance gain comparisons. Tektronix has developed the two-dimensional display called the “Lightning” display because of the zigzag trace pattern as shown below.
This display is created by plotting luminance versus B-Y in the upper half of the display and inverted luminance versus R-Y in the lower half of the display. The bright dot in the centre of the screen is the luminance blanking level. The points above and below this show the plots of the different colour components based on their signal amplitude. This test requires a colour bar test signal be used.
Industry:Software
