Samsung LS17PEA Reference Infomation

14 Reference Infomation

14-1

14 Reference Infomation

14-1 Technical Terms

-TFT-LCD (Thin film Transistor Liquid Crystal Display)

ADC(Analog to Digital Converter)

This is a circuit that converts from analog signal to

digital signals.

-PLL(Phase Locked Loop)

During progressing ADC, Device makes clock syn-

chronizing HSYNC with Video clock

-Inverter

Device that supplies Power to LCD panel lamp. This

device generates about 1,500~2,000V.

AC Adapter

Device that converts AC(90V~240V) to DC(+12V or

14V)

SMPS(Switching Mode Power Supply)

Switching Mode Power supply. This design technol-

ogy is used to step up/down the input power by

switching on/off

-FRC(Frame Rate Controller)

Technology that changes the number of frames dis-

played on screen per second.

TFT-LCD panel requires 60 frames per second.

This technology is needed to convert input image to

60 frames per second regardless input frame quan-

tity.

-Image Scaler

Technology that converts an input resolution to

another resolution.(ex. 640* 480 to 1024*768)

-Auto Configuration(Auto adjustment)

This is an algorithm to adjust monitor to optimum

condition by pushing one key.

-OSD(On Screen Display)

Customers can easily control the screen settings

using the OSD.

-FINE

The "Fine" adjustment is used to adjust visibility by

controlling phase difference.

-COARSE

This adjustment adjusts the display by tuning Video

clock and PLL clock.

-DVI (Digital Visual Interface)

This provides a high speed digital connection for

visual data types that is display technology inde-

pendent. This interface is primarily forcused at pro-

viding a connection between a computer and

its display device.

-L.V.D.S.(Low Voltage Differential Signaling)

A kind of transmission method for Digital.It can be

used from Main PBA to Panel.

-T.M.D.S (Transition minimized Differential Signaling)

a kind of transmission method for Digital.

It can be used from Video card to Main PBA.

-DDC(Display data channel)

It is a communication method between Host

Computer and related equipment.

It enables Plug and Play between PC and Monitor.

-EDID

Extended Display Identification Data PC can recog-

nize monitor information such as Product data,

Product name,Display mode,Serial number and

Signal source, etc Data is recognised via DDC Line

linking PC and Monitor.

-Dot Pitch

The image on a monitor is composed of red, green and blue dots. The closer the dots, the higher the resolution. The distance between two dots of the same color is called the 'Dot Pitch'. Unit: mm

-Vertical Frequency

The screen must be redrawn several times per second in order to create and display an image for the

14 Reference Infomation

14-2

user. The frequency of this repetition per second is called Vertical Frequency or Refresh Rate. Unit: Hz Example: If the same light repeats itself 60 times per second, this is regarded as 60 Hz.

-Horizontal Frequency

The time to scan one line connecting the right edge to the left edge of the screen horizontally is called Horizontal Cycle. The inverse number of the Horizontal Cycle is called Horizontal Frequency. Unit: kHz

-Interlace and Non-Interlace Methods

Showing the horizontal lines of the screen from the top to the bottom in order is called the Non-Interlace method while showing odd lines and then even lines in turn is called the Interlace method. The NonInterlace method is used for the majority of monitors to ensure a clear image. The Interlace method is the same as that used in TVs.

-Plug & Play

This is a function that provides the best quality screen for the user by allowing the computer and the monitor to exchange information automatically. This monitor follows the international standard VESA DDC for the Plug & Play function.

-Resolution

The number of horizontal and vertical dots used to compose the screen image is called 'resolution'. This number shows the accuracy of the display. High resolution is good for performing multiple tasks as more image information can be shown on the screen.

Example: If the resolution is 1280 x 1024 , this

means the screen is composed of 1280 horizontal dots (horizontal resolution) and 1024 vertical lines (vertical resolution).

14 Reference Infomation

14-3

Sync Type

Pin No.

15-Pin D-Sub Signal Cable Connector

Separate Composite

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

Red Green Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input (+5V) Self Raster GND Bi-Dr Data (SDA) H-Sync. V-Sync. DDC Clock (SCL)

Red Green Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input (+5V) Self Raster GND Bi-Dr Data (SDA) H/V-Sync. Not Used DDC Clock (SCL)

Red Green + H/V Sync. Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input (+5V) Self Raster GND Bi-Dr Data (SDA) Not Used Not Used DDC Clock (SCL)

Sync-on-green

No Connection

+5V_M

Self Raster

+5V_M

Rx0-

Rx0+

No Connection

RxC+

RxC-

Rx2-

Rx2+

GND

No Connection

DDC Clock (SCL)

DDC Data (SDA)

Rx1-

Rx1+

No Connection

Sync Type

Pin No.

24P DVI-D

14-2 Pin Assignments

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