บทที่ 2
59
(DEVICES IN GRAPHICS SYSTEM)
Transcript of บทที่ 2
(DEVICES IN GRAPHICS SYSTEM)
3.
2.
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4.
1.
Input devices
Output devices
CRT )
(Keyboard) :
ECMA-23
:
Dvorak Elite
:
Mouse Trackball :
icon Mechanical
Optical
:
LightPens Touchscreens
(phosphor)
: LightPens & Touchscreens
Photonic Electrical
: LightPens & Touchscreens
Bit Pad Digitizing Tablet :
stylus puck
puck X-Y
puck
: Bit Pad / Digitizing Tablet
(Joystick) :
:(Joystick)
(Scanner) :
:(Scanner)
API Application Programming Interface
Operating SystemsAPI
Device Dependent
Device Independent
OutputDevice
CRT CathodeRay Tube
(Raster-Scan Architecture
Video ControllerDisplay Controller
(Video Controller)
OpenGLx y
xmax
ymax
(Video Controller)
x y
CRTx
x y
(Video Controller)
(Video Controller)
Display Processor
Graphic ControllerDisplay Coprocessor
scan conversion
CRT
scan line
-
refresh bufferframe buffer
(Raster Scan)
color buffer
(Raster Scan)
(Raster Scan)
Random Scan
CRT
vector stroke-writingcalligraphic
(Random Scan)
(Random Scan)
beam-penetration(R :
Red (G : Green
CRT
beamacceleration voltage
CRT
Shadow-maskShadow-mask
(R ) (G) (B) RGB
Shadow-mask
CRT
Shadow-mask -CRTShadow-mask
Shadow-mask
Shadow-mask
in-line - -
CRT
CRT
Shadow-mask - CRT
CRT
Flat-Panel Display
(Flat-panel Display) ,
CRT CRT
, , ,
(Flat-Panel Display)
2 emissive nonemissive
emissive ( emitter) (plasma),
thin-film electroluminescent light-emitting diodes nonemissive ( nonemitter)
nonemissive LCD (Liquid Crystal Display)
(Flat-Panel Display)
(Plasma Panel) gas-discharge
2
() 60
(Plasma Panel)
(Plasma Panel)
Thin-film electroluminescent
(electrode)
Thin-film electroluminescent
Thin-film electroluminescent
Thin-film electroluminescent
Thin-film electroluminescent
LED (Light-Emitting Diodes) emissive
CRT
LED (Light-Emitting Diodes)
LED LED
LED (Light-Emitting Diodes)
LCD (Liquid Crystal Display)
LCD
CRT
LCD
LCD active-matrix LCD (AMLCD) TFT (Thin Film Transistor)
passive-matrix LCD STN (Super Twisted Nematic) DSTN (Dual-Scan Twisted Nematic)
LCD TFT active
LCD
LCD
LCD
3 CRT
CRT
Genisco SpaceGraph25x25x25 . .
2
(ultrasonography) CRT
3 (Stereoscopic)
3 3
( )
3
3
3
(Headset) (optical system)
3
(sensing system)
3 (data glove)
(Data grove)
3 (head-tracking device)
(ultrasound tracking device) 6
(Printer) :
(Printer)
(Plotter) : (A A
(Plotter)
