Design Of Data Acquisition And Trasmitter Module Of Synchronous LED Display System

LED panel display is a new high technology product.It has some unique advantages of high brightness,long lifetime,stable performance,widely dynamic range and has been extensively applied in many occasions such as advertisement, securities, transportation, information dissemination,news issue,etc. With the progress of full-color LED panel display technology,the LED panel display has broad application prospects.The LED display technology has integrated optoelectronics, computers and control technology, A display system mainly consists of PC, acquisiton and trasmitter module, receiver and scan modules and screen body.When wee need the LED panel to be dynamically real-time displayed, the requirement of data signal acquisiton and transmission performance will become very high.This paper's research object is data acquisiton and trasmitter module of synchronous LED display system .In this paper it puts forward a design scheme of the system implementation, it mainly consists of two parts:DVI decode circuit and transmitting part. DVI decode circuit obtain display data from DVI interface. It doesn't have D/A and A/D conversion process,so compare with the traditional VGA interface, DVI interface can avoid the loss of part image information and guarantee the display images completely reproducted. And DVI interface has the advantages of high transmit speed and strong anti-jamming ability, etc. Transmitting part is caching the data received and then sending to Ethernet chips for transmission after being processed by FPGA.This subject adopts programmable logic device as a core component to fulfill the system function. Programmable logic devices with high integration level, high processing speed, and ISP can meet the requirement of high-speed image data processing, making the design more flexible, upgrade online without modifying original circuit and shorten design cycle.