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- Number of terms: 20560
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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.
a) An editing term meaning to bring all source and record VTRs to the predetermined edit point plus pre-roll time. b) An audio mixer function that allows the user to hear an audio source (usually through headphones) without selecting that source for broadcast/recording; the audio counterpart of a preview monitor. c) The act of rewinding and/or fast-forwarding a video- or audiotape so that the desired section is ready for play.
Industry:Entertainment
A switch that temporarily disables a recorder’s Tape Lifters during fast forward and rewind so the operator can judge what portion of the recording is passing the heads.
Industry:Entertainment
a) The portion of the video signal that lies between the trailing edge of the horizontal sync pulse and the start of the active picture time. Burst is located on the back porch.
b) The back porch of a horizontal synchronizing pulse is that area from the uppermost tip of the positivegoing right-hand edge of a sync pulse to the start of active video. The back porch of a color video sync pulse includes the 8 to 9 cycles of reference color burst. The back porch is at blanking level.
Industry:Entertainment
Curvature of a tape in the lateral direction. Cupping may occur because of improper drying or curing of the coating or because of differences between the coefficients of thermal or hygroscopic expansion of coating and base film.
Industry:Entertainment
The slope of the back porch from its normal horizontal position. Positive or negative refer respectively to upward or downward tilt to the right.
Industry:Entertainment
a) A method of combining two video images. The most common example of chroma keying is the news weather person standing in front of a weather map. The details of the process are, a camera is pointed at the weather person who is standing in front of a bright blue or green background. The weather person and bright-blue or green background image is fed into a computing device along with the image of the weather map. Wherever the computing device sees the bright-blue or green background, it displays the weather map. Wherever the computing device does not see bright blue or green, it shows the weather person.
b) A process for controlling the overlay of one video image over another, the areas of overlay being defined by a specific color or chrominance in one of the images. More versatility is available when working in the digital mode than in the analog since the color to define the effective mask can be more precisely specified. Effective use of chroma key frequently required high definition in the color image and, therefore, full bandwidth R, G, B is preferred. Linear key provides an alternate method for control of the overlay.
c) Chroma keying is the process of controlling the overlay of one video image over another. The overlay is defined by a specific color or chrominance in one of the images.
Industry:Entertainment
Calculation of a tape in-point by finding the out-point and subtracting the duration of the edit.
Industry:Entertainment
