Project of LCD Information Release System

 

INDEX

1.    Project of Design. 1

1.1.     Project 1: 1

1.2.     Project 2：... 2

2.    The Project Compare And Explain. 4

2.1.     Contrast Of Project 4

2.2.     Recommendation Of Project 5

 

1.   Project of Design

1.1. Project 1:

Through a computer of multi-display adapter,the output of each display adapter is converted into a video signal by a equipment of VGA to AV,it is sended to LCD by cable of 75-5.Structure picture of system as follows:

 

 

The system consists of 3 parts:

n       Host of multi-display adapter

By multi-display adapter composed of a computer system, amount of display adapter depends on the number of LCD, each LCD is corresponding to a display adapter.

n       Transmission Of Video

Transmission of video consists of VGA->AV,75-5 cable and amplifier (if distance of between host and LCD is more than 300 meters,need it.).

n       Control Software

This part is hard-core of whole system, it consists of the following components:

Ø       Edit Information

Ø       Display of Information

Ø       Control Of Equipment

 

1.2. Project 2：

Through a computer of multi-display adapter, the output of each display adapter is converted into a video signal , video signal through the modulator and video mixer, and then through the RF transmitter is converted to a wireless signal.

Structure picture of system as follows:

 

The system consists of 3 parts:

n       Host of multi-display adapter

By multi-display adapter composed of a computer system, amount of display adapter depends on the different sources of information quantity.

n       transmission of Wireless

Computer output information through the video modulator, video mixer, RF transmitter transmission out for television reception equipment

n       Control Software

This part is hard-core of whole system, it consists of the following components:

Ø       Edit Information

Ø       Display of Information

Ø       Control Of Equipment

2.   The Project Compare And Explain

2.1.  Contrast Of Project

Projects 1 and 2 has themselves advantages，described as follows:

l       Project 1：

Virtue：Hardware structure is very simple, only need a video converter and transmission cable can be achieved, maintenance of equipment is relatively simple, and the hardware  of system need very little investment。

Defect：1、After the cable is installed，location of LCD is aptotic.If LCD is moved an other room from a room, transmission cable is installed. 2、 Restricted by distance, distance of between LCD and the host of control (computer) should not more than 300 meters.

l       Project 2：

Virtue：Position of LCD is very unrestricted, it can be moved at any moment. Expansibility of system is very good, and Can increase and decrease the number of LCD.

Defect: The part of hardware is complicated, overall investment is also relatively large. maintenance of equipment is also relatively complex, and need professional knowledge.

2.2. Recommendation Of Project