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CHAPTER 8 VIDEO DISPLAY AND AUDIO
DISPLAY
43
Computer Science
Undergraduate 1
02/17/2012

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Term
ACTIVE-MATRIX DISPLAY
Definition
AN LCD DISPLAY IN WHICH EACH INDIVIDUAL CELL IN THE GRID HAS ITS OWN INDIVIDUAL TRANSISTOR
Term
ALTERNATING-FRAME RENDERING
Definition
A METHOD OF SHARING THE VIDEO WORKLOAD IN WHICH EACH CARD IS RESPONSIBLE FOR RENDERING EVERY OTHER FRAME. FOR EXAMPLE, IT FOUR CARDS ARE USED, THEN EACH CARD IS RESPONSIBLE FOR THE FORTH FRAME IMAGE
Term
ASPECT RATIO
Definition
RATIO OF A DISPLAY AREA'S HEIGHT AND WIDTH
Term
BITMAP (.BMP)
Definition
A GRAPHIS STANDARD FOR UNCOMPRESSED ENCODING OF IMAGES
Term
BUFFERING
Definition
A TECHNIQUE USED TO PLAY A DOWNLOADED FILE WITHOUT SKIPS OR QUIETS SPOTS DURING PLAYBACK
Term
CATHODE RAY TUBE (CRT)
Definition
A PICTURE TUBE IN WHICH A BEAM OF ELECTRONS SWEEPS ACROSS THE THE GLASS TUBE. EXCITING PHOSOPHOROUS DOTS IN THE SCREEN
Term
CODEC
Definition
ANY HARDWARE, SOFTWARE, OR COMBINATION OF HARDWARE AND SOFTWARE THAT CAN COMPRESS AND DECOMPRESS DATE
Term
COLOR PALETTE
Definition
A COLLECTION OF POSSIBLE DIFFERENT COLORS THAT CAN BE DISPLATED ON A MONITOR
Term
COLOR/GRAPHIC ADAPTER (CGA)
Definition
A VIDEO STANDARD THAT FEATURES TWO RESOLUTIONS:320X200 IN FOUR COLORS AND HIGHER RESOLUTIONS OF 640X200 IN TWO COLORS
Term
CONTRAST RATIO
Definition
A MUMERIC EXPRESSION IN THE FORM OFA RATIO THAT DESCRIBES THE AMOUNT OF CONTRAST BETWEEN THE DARKEST AND LIGHTEST PIXEL IN THE IMAGE
Term
DEFLECTION YOKE
Definition
THE ELECTROMAGNETS USED TO DEFLECT THE ELECTRON BEAM IN A CRT
Term
DIGITAL-TO-ANALOG CONVERSION (DAC)
Definition
A CHIP THAT CONVERTS THE DIGITAL SIGNAL FROM THE COMPUTER TO AN ANALOG SIGNAL THAT IS DISPLAYED ON THE COMPUTER'S MONITOR
Term
DOT PITCH
Definition
THE DISTANCE BETWEEN TWO COLOR DOTS ON THE SCREEN, MEASURED IN MILLIMETERS
Term
ELECTRON GUNS
Definition
THE COMPONENTS THAT PRODUCE THE ELECTRON BEAM, WHICHSWEEPS ACROSS THE INSIDE OF THE SCREEN
Term
ENHANCED GRAPHIC ADAPTER(EGA)
Definition
A VIDEO STANDARD THAT IMPROVED ON THE RESOLUTIONS AND COLOR CAPABILITES OF THE CGA STANDARD
Term
EXTENDED GRAPHICS ARRAY (XGA)
Definition
A VIDEO STANDARD THAT SUPPORTS A RESOLUTION OF 640X480 WITH 65,536 COLORS, OR 1024X768 WITH 256 COLORS
Term
FIELD
Definition
A COMPLETE SWEEP OF THE ENTIRE VIDEO DISPLAY AREA ORIENTATION
Term
GAS-PLASMA DISPLAYS
Definition
A DISPLAY THAT OPERATES ON THE PRINCIPLE OF ELECTROLUMINESCENCE
Term
LIQUID CRYSTAL DISPLAY (LCD)
Definition
A TYPE OF MONITOR THAT USES POLARIZED LIGHT PASSING THROUGH LIQUID CRYSTAL TO CREATE AN IMAGE ON SCREEN
Term
MONOCHROME
Definition
A MONITOR TUYPE THAT DISPLAYS ONLYA A SINGLE COLOR, USUALLY AMBER OR GREEN
Term
MOTION PICTURE EXPERT GROUP (MPEG)
Definition
A STANDARD FORMAT FOR RECORDING MOTION PICTURE VIDEO AND SOUND
Term
MULTICOLOR/GRAPHIC ARRAY(MCGA)
Definition
A VIDEO STANDARD THAT SUPPORTED CGA AND ALSO PROVIDED UP TO 64 SHADES OF GRAY
Term
MULTIMEDIA
Definition
INCORPORATATING SOUND OR VIDEO
Term
MUSICAL INSTRAMENT DIGITAL INTERFACE (MIDI)
Definition
A FILE STANDARD DEVELOPED FOR MUSIC SYNTHESIZER
Term
NATIVE RESOLUTION
Definition
THE RESOLUTION THAT MATCHES THE PIXEL DESIGN OF THE DESPLAY
Term
PASSIVE-MATRIC DISPLAY
Definition
AN LCD DISPLAY IN WHICH A GRID OF SEMI-TRANSPARENT CONDUCTORS IS RUN TO EACH OF THE CRYSTALS THAT MAKE UP THE INDIVIDUAL PIXELS
Term
PERSISTENCE
Definition
THE CONTINUATION OF THE GLOW AFTER THE ELECTRON BEAM CEASES TO STRIKE THE PHOSPHOR AREAS.
Term
PIXEL
Definition
THE SMALLEST UNIT OF COLOR IN A SCREEN DISPLAY
Term
PIXEL PITCH
Definition
THE DISTANCE BETWEEN TWO SAME COLOR PIXELS ON THE DISPLAY AREA
Term
POLARIZED LIGHT
Definition
LIGHT ENERGY COMPOSED OF LIGHT BEAMS WITH A MATCHING WAVE ANGEL
Term
RASTER
Definition
THE SWEEP OF THE ELECTRON BEAM
Term
REFRESH RATE
Definition
THE RATE AT WHICH THE ELECTRON BEAM SWEEPS ACROSS THE SCREEN
Term
RESOLUTION
Definition
THE AMOUNT OF DETAIL A MONITOR IS CAPABLE OF DISPLAYING
Term
RESPONSE TIME
Definition
THE AMOUNT OF TIME IT TAKES A TFT PIXEL TO DISPLAY AFTER A SIGNAL IS SENT TO THE TRANSISTOR CONTROLLING THAT PIXEL
Term
RUN-LENGTH ENCODING (RLE)
Definition
A GRAPHICS COMPRESSION FORMAT THAT REDUCES IMAGE FILE SIZE BY RECORDING STRINGS OF IDENTICL PIXELS
Term
SAMPLING
Definition
MEASURING AN ANALOG SIGNAL AT REGULAR INTERVALS
Term
SHAWDOW MASK
Definition
A METAL MESH WITH TRIANGULAR HOLES THAT A CRT's ELECTRON BEAM PASSES THROUGH, CREATING A CRISPER IMAGE
Term
SPLIT-FRAME RENDERING
Definition
A METHOD OF SHARING THE VIDEO WORKLOAD IN WHICH EACH CARD IS RESPONSIBLE FOR AN EQUAL PART OF THE FRAME IMAGE. FOR EXAMPLE, IF FOUR CARDS ARE USED, EACH CARD IS RESPONSIBLE FOR ONE-FOURTH OF THE IMAGE
Term
SuperVGA (SVGA)
Definition
A VIDEO STANDARD THAT SUPPORTS 16 MILLION COLORS AND VARIOUS RESOLUTIONS UP TO 1600X1200
Term
THIN FILM TRANSISTOR LIQUID CRYSTAL DISPLAY (TFT-LCD)
Definition
A DISPLAY THAT CONSISTS OF A MATRIX OF THIN FILM TRANSISTOR, IN WHICH EACH TRANSISTOR CONTROLS A SINGLE PIXEL
Term
VECTOR GRAPHICS
Definition
A GRAPHIC STANDARD BASED ON A SERIES OF MATHIMATICAL FORMULAS THAT BAN BE COVERTED INTO GEOMETRIC SHAPES REPRESENTING THE IMAGE TO BE DISPLAYED
Term
VIDEO GRAPHIC ARRAY (VGA)
Definition
THE MIMIMUM STANDARD FOR VIDEO ADAPTERS, THAT DISPLAY AT A RESOLUTIONS OF 640X480 WITH 16 COLORS OR 320X200 WITH 256 COLORS
Term
VIEWING ANGLE
Definition
A MEASUREMENT OF THE ANGLE AT WHICH A PERSON CAN ADEQUATELY SEE AN IMAGE ON A DISPLAY WITHOUT IT LOOKING EXCESSIVELY DISTORTED
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