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LED classification

LED classification:

According to the install environment can be classify as:

1. Indoor led display

2. Semi-outdoor led display

3. Outdoor led display

Item

Indoor screen

Semi-outdoor screen

Outdoor screen

Brightness

Lower brightness

usually <1000nit<>

Medium brightness

Usually 1000~2000nit

High brightness

Usually more than 4000nit

Water proof

Generally do not need waterproof

Do not need waterproof or have water-proof function

Must be Water-proof

Need reach IP65

Pixel pitch

Small pixel pitch, usually within 10mm pixel pitch

Usually choose Medium pixel pitch

Usually use bigger Pixel pitch

According to the display content choose the color and than can be classify as:

1. Monochrome display

2. Dual color display

3. Full color display

Items

Monochrome

Dual color

Full color

Color

Usually use red color

Red and green color

Red, green ,blue color

Representation color

only red color

Red, green ,yellow.

Color performance is generally

true color display

Rich colors, strong performance

Main display content

Text

Text ,image

Text, image, video

Price

Cheaper

Middle

high

According the the screens use function choose the control card. And then can be classify as:

1. Synchronous control screen

2. Asynchronous control screen

The suggestion on Control method selection

Items

Display require

synchronous

asynchronous

1

Small display, no need PC control

choose

2

Screen far away from the control room and need remote send the date

choose

3

High greyscale display, real-time display, big screen size

choose

4

Rental application

choose

5

Central control,such as light pole screen, station screen

choose

Screens resolution and pixel pitch choose

Item

Synchronous control screen

Asynchronous control screen

Display method

Hardware acquisition the data.

PC and monitor point-to-point correspond

receive the data which send from the sender, save in the control card and then display it.Can be Off line display

Hardware port

Multif-unction card , sending card install into PC directly. Screen only need connect with the sending card and no other hardware port required

Via Network port or COM port connect with PC. Support TCP/IP, or RS232,RS485, or wireless control

Display content

No limited. Can be display anything which  have displayed by monitor. Such as text, image, video, TV, DVD

Support text, imagine, flash, simple video

Control method

Real-time display with PC, if power off the PC, then will be nothing display by screen

After receive the data from sender and save in the control card,its can be off line control

Secondary development

No need software and hardware port,

Need according to communication interfaces and communication protocols to write the program. Usually provide DLL or communication protocols

Communication distance

Net cable: <100m<>

Coaxial cable<300m<>

optical fiber<10000m<>

RS232 < 50m

RS348<1200m<>

TCP/IP<100m<>

Fiber or wireless control devoice

Communication speed

100M~1000M

9600-100M

Require to the PC

AGP/PCI-E Slots, PCI Slots, COM slots

Support all sender which with COM port or 100M net port

Require to the operation system

WIN2000,xp vista

Win2000,xp,vista

Storage

Computer hard disk capacity

Usually 32k to 16M, some support SD or CF card

Display performance

Synchronization with Computer

Most adopt SCM control, some adopt ARM or profession SCM control.




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