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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.
Refers to the size of the area on the artwork which falls within the sight of the camera. Thus, a 12 field is roughly 12 inches across and a 9 field is 9 inches across. Even though a drawing or cel may be of a standard 12 or 16 field size, the camera may have been zoomed in to a 8 or 9 field, focusing on a tighter area of the artwork, eliminating the outer margins of the sheet. Most early pictures conformed to a squarish rectangular field referred to as the Academy Format. Later films, which were shot in widescreen or Cinemascope had a more rectangular active area.
Industry:Entertainment
A process used in both analogue and digital image processing to reduce bandwidth. philtres can be designed to remove information content such as high or low frequencies, for example, or to average adjacent pixels, creating a new value from two or more pixels.
Industry:Entertainment
An electronic device which takes the input from a reader of Keykode numbers, decodes this information and correlates the numbers with the SMPTE time code it generates. These data, along with 3:2 pull-down status of the transfer, footage count, and audio time code (if applicable) are made available for window burn-ins, VITC-LTC recording and output to a computer. (See KODAK Guide to Film and Video Post Production - Publication H-64.)
Industry:Entertainment
The number of images contained in a single second of a moving picture. Thirty FPS is considered full-motion video. Many proprietary digital video technologies produce only 15 FPS video. Film is 24 FPS, NTSC is 30 FPS and PAL/SECAM is 25 FPS.
Industry:Entertainment
A digital electronic device which synchronises two or more video signals. The frame synchronizer uses one of its inputs as a reference and genlocks the other video signals to the reference's sync and colour burst signals. By delaying the other signals so that each line and field starts at the same time, two or more video images can be blended, wiped and otherwise processed together. (A TBC takes this a step further by synchronising both signals to a stable reference, eliminating time base errors from both sources.)
Industry:Entertainment
Special effect in which the picture is held as a still image. It is possible to freeze either one field or a whole frame. Freezing one field provides a more stable image if the subject is moving, however, the resolution of the video image is half that of a full frame freeze. Digital freeze frame is one special effect that could be created with a special effects generator or a TBC
Industry:Entertainment
Video reproduction at 30 frames per second (NTSC-original signals) or 25 frames per second (PAL-original signals).
Industry:Entertainment
When an analogue master videotape is duplicated, the second-generation copy is usually inferior in some way to the master. This degradation appears as loss of detail, improper colors, sync loss, etc. Limited frequency response of audio/video magnetic tape and imperfections in electronic circuitry are the main causes of generation loss. Higher performance formats (such as 1-inch) exhibit much less generation loss than more basic formats. Digital formats make generation loss negligible because each copy is essentially an exact duplicate of the original. Video enhancing equipment can minimise generation loss. Some video processors pre-enhance the video signal to overcome generation loss.
Industry:Entertainment
The most common audible noise component in audio recording, stemming from a combination of circuit and tape noise. Several noise reduction systems are available, such as Dolby, DBX, DNR (Dynamic Noise Reduction), DNL (Dynamic Noise Limiter), to help alleviate such problems.
Industry:Entertainment
Rating of the fine detail (definition) of a TV picture, measured in scan lines. The more lines, the higher the resolution and the better the picture. A standard VHS format VCR produces 240 lines of horizontal resolution, while over 400 lines are possible with S-VHS, S-VHS-C, and Hi-8 camcorders.
Industry:Entertainment
