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IMA Chapter 7 Terms
terms and definitions
27
Other
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02/15/2007

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Term
Audion
Definition
early form of tube electronics that allowed the amplification of electrical signals. Dr. Lee deForest
Term
Mechanical TV
Definition
invented by John Baird
Term
NTSC
Definition
national Television Standars Committee. For to specify broadcast conditions.
Term
PAL
Definition
Phase Alternating Line. broadcast standards used mainly in Europe.
Term
SECAM
Definition
broadcast standards used mainly in France.
Term
VTR
Definition
video tape recorder.
Term
Ampex
Definition
manufacturer of early American magnetic recorders.
Term
Quadruplex
Definition
category of first operational video recorder.
Term
VCR
Definition
video casette recorder
Term
U-Matic
Definition
utilized 3/4 inch video tape enclosed in a cassette.
Term
Betamax
Definition
Sony's video cassette consumer platform released in 1975
Term
VHS
Definition
JVC'a video cassette consumer platform released in 1976
Term
DV
Definition
Digital video
Term
Cathode ray tube
Definition
large vacuum tube that enables a beam of electrons to flow between its ends
Term
Interlaced scanning
Definition
two fields per frame, first odd then even.
Term
Luminance
Definition
brightness of the black and white information
Term
Chrominance
Definition
color information, consisting of hue and saturation
Term
timing and blanking pulses
Definition
black out the electron beam, enabling it to return to the start of each line and field undetected.
Term
audio signal
Definition
sound information
Term
telecine
Definition
process by which images are captured onto video
Term
SMPTE time code
Definition
digital audio signal that is assigned to a special track of a videotape or audio tape
Term
CCD
Definition
charge coupled device. replaced tubes in modern cameras.
Term
CMOS
Definition
complementary metal oxide semiconductor. alternative unit of image capture
Term
progressive scanning
Definition
fills screen image lines sequentially
Term
aspect ratio
Definition
proportion of the width of a viewable area compared to its height
Term
NTSC
VS.
PAL & SECAM
Definition
525 total lines, 480 visible, 30 frames per second.
625 total lines, 580 visible, 25 frames per second.
Term
American widescreen
Academy standard
HDTV
NTSC
Definition
2.35:1
1.85:1
1.78:1
1.33:1
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