Overview of Graphics Systems 그래픽스시스템개요graphics.hallym.ac.kr/teach/2008/cg/src/02system.pdf · 2008-09-16 · Raster-Scan Display Processor Display processor or graphics

Sun-Jeong Kim

Overview of Graphics Systems(그래픽스 시스템 개요)

2nd Week, 2008

Computer Graphics2

Contents

Video Display Devices

Hard-Copy Devices

Raster-Scan Systems

Input Devices

Graphics Workstations and Viewing Systems

Computer Graphics3

Video Display Devices

CRTs (Cathode-ray tubes)

Plasma panels

LEDs (Light-emitting diodes)

TFLEs (Thin-film electroluminescent displays)

LCDs (Liquid-crystal displays)

Computer Graphics4

Refresh Cathode-Ray Tubes

Computer Graphics5

Raster-Scan Displays (1)

Computer Graphics6

Raster-Scan Displays (2)

Scan lineScan line

Refresh bufferRefresh buffer or frame bufferframe buffer

PixelPixel (picture element)

ResolutionResolution and aspect ratioaspect ratio

Interlacing scan lines

Computer Graphics7

Random-Scan Displays (1)

Computer Graphics8

Random-Scan Displays (2)

Vector displaysVector displays

Display listsDisplay lists or vector filevector file

Raster-scan vs. random-scan

Computer Graphics9

Color CRT Monitors

Computer Graphics10

Flat-Panel Displays

Emissive displaysConverting electrical energy into light

Plasma panels, thin-film electroluminescent displays, and light-emitting diodes

Non-emissive displaysUsing optical effects to convert sunlight or light from some other source into graphics patterns

Liquid-crystal devices

Computer Graphics11

Plasma Panels and TFELs

Plasma-panel display TFEL display

Computer Graphics12

Liquid-Crystal Displays

Computer Graphics13

Sterescopic and Virtual-Reality Systems

Left Right

Computer Graphics14

Hard-Copy Devices

Ink-jet printers

Laser printers

Film recorders

Dot-matrix printers

Pen plotters

Computer Graphics15

Raster-Scan Systems (1)

Video controllerVideo controller or display controllerdisplay controller

Computer Graphics16

Raster-Scan Systems (2)

Basic video-controller refresh operations

Computer Graphics17

Raster-Scan Display Processor

Display processorDisplay processor or graphics controllergraphics controller

Scan conversionScan conversionDigitizing a picture into set of pixel values in the frame buffer

Computer Graphics18

Input Devices (1)

Keyboards, button boxes, and dials

Mouse devices

Trackball and spaceballs

Joysticks

Data gloves

Digitizers

Image scanners

Range scanners

Touch panels

Light pens

Computer Graphics19

Input Devices (2)

A keyboard and a one-button mouse

The Z mouse (three buttons and a trackball)

Computer Graphics20

Input Devices (3)

A joystick

A data glove and a spaceball

Computer Graphics21

Input Devices (4)

Desktop tablets

A digitizer

Computer Graphics22

Input Devices (5)

An image scanner

A range scanner

The Digital Michelangelo Project(http://graphics.stanford.edu/projects/mich/)

Computer Graphics23

Input Devices (6)

Plasma panels with touch screens

A light pen with a button

Computer Graphics24

Graphics Workstations and Viewing Systems