บทที่ 2

(DEVICES IN GRAPHICS SYSTEM)

1.2. 3. 4.

.

.

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)