外文文獻--翻譯--led顯示屏

1、外文資料原文 外文資料原文Large screen display system's research Led developmentAlong with computer technology's high speed development, LED (Light Emitting Diode) the screen display system takes after the television, the bro

2、adcast, the newspaper, the magazine “the fifth big media” marches into the social life fast each aspect. Its collection microelectronic technology, the computer technology, the information processing and management techn

3、ology in a body, may the information through the writing, the design, the animation and the video frequency four forms demonstrates. With media and so on bank of television monitors, magnetism vane compares, the LED larg

4、e screen display system has the design to be artistic, the color is sharp; The design, the color change are rich, are fast; The low power loss, the long life, the use cost low, work stably reliable and so on characterist

5、ics. It demonstrated the chart article angle of view is big, the apparent distance is far, thus has widely applied in the large-scale square, the commercial advertizing, the sports complexes, the information disseminatio

6、n, the news issue, the securities trading; It also applies in the industrial control and the industry reassignment system, is advantageous each kind of parameter, the alarm point, the technical process demonstrates clear

7、ly perfect, may satisfy the different environment the need. The LED display monitor is one kind of use computer and the complex digital signal processing electron advertisements propaganda screen. Its screen body part by

8、 the microprocessor (is mainly monolithic integrated circuit) and the driving circuit control movement, demonstrated the image or the writing obtain by the computer edition software editor. Because the LED display monito

9、r this kind of new generation information graphic display device has the demonstration design to be stable, the power loss is low, life long and so on characteristics, moreover it synthesized each kind of information gra

10、phic display device's strong point, and has overcome own insufficiency, because specially a display monitor may demonstrate that the different content, the display mode is rich. Therefore in the public area, it has t

11、he intense advertisements propaganda and the information transmission effect, already in the solid demonstrated day by day occupies the dominant position. The LED display monitor's prospects for development are extre

12、mely broad, at present toward the high luminance, a higher weather fastness, the higher luminous density, the higher illumination uniformity, the reliability, the panchromatic direction is developing. Is composed of the

13、different material's semiconductor can send out the different color the LED crystal spot. At present what applies is broadest is red, the green, yellow LED. But the blue color and the pure green LED development had a

14、lready achieved the practical stage.LED display monitor's classificationLED display monitor's classified LED display monitor is many kinds of technical synthesis application product, involves photoelectronics, th

15、e semiconductor device, the digit electronic circuit, the large scale integrated circuit, the monolithic integrated circuit and the microcomputer and so on each aspect, both has the hardware and to have software [4]. Aft

16、er the LED display monitor is takes the broadcast, the television, the newspaper, the magazine another new communication media. At present the LED display monitor basis uses the place to be different, may divide into the

17、 outdoor screen and the indoor screen two kinds, its main difference is photo top, from the display panel to the actuation board, arrives at the control panel again, carries on the hardware programming, after debugging s

18、uccessfully, receives a telegram the source plate, finally completes the data transmission board and PC machine connects, carries on the PC software programming, completes the demonstration data the production, the extra

19、ction, processing, the transmission as well as the demonstration effect real-time control. Each module uses 8 LED lattices to lighten each line by the line scan form red, green, the traffic light, the demonstration writi

20、ng and the image. The LED lattice's actuation, the decoding, the lock save and so on to be responsible by control panel's digital circuit. Its data reads by the monolithic integrated circuit from the memory, simu

21、ltaneously the monolithic integrated circuit uses the interrupt mode, carries on the two-way communication through the RS-232 data line and PC machine, from the PC machine gain order or the data, and carries out the move

22、ment or the stored datum according to the order. Not only but PC machine carries on many machine serial port correspondences with many monolithic integrated circuits, but must be responsible for the writing input and the

23、 typesetting, the production lattice data or the order character, realize the man-machine interaction function.Principle of work this article designs the large-scale LED display monitor becomes by the double primary colo

24、r lattice LED combination, uses the line-by-line scanning the display mode to demonstrate red, green, the yellow three kind of color random lattice information. The display module uses the line-by-line scanning demonstra

25、tion the way, its control system take monolithic integrated circuit AT89C52 as a core, uses 62256 memories to take the data-carrier storage, actuates 8*8 using latch 74HC377 and 8 group of line driver 2083The LED display

26、 module, simultaneously opens the serial port interrupt and superior PC machine carries on many machine correspondences. Through realizes display monitor's many kinds of animation pattern to the monolithic integrated

27、 circuit programming to demonstrate: Rolls the screen toward left, rolls the screen toward right, rolls the screen upwardly, rolls the screen downward, on rolls the screen toward left, on rolls the screen toward right, t

28、o the Zola curtain, pulls the curtain toward right, pulls the curtain upwardly, pulls the curtain downward, to the right lateral, lightens in turn from left to right, from among to two nearby, lightens in turn. Animation

29、 speed adjustable: Divides into 100 grades, lowest is 1 fast, highest is 100 fast. The pattern color is diverse: The background achromatic color, the writing red/green/yellow, the background is red, the writing does not

30、have/the yellow/green, the background green, the writing does not have/yellow/red, the background yellow, the writing does not have/the red/green. Moreover, but also increased several dozens kind of neon light effect ani

31、mation. The PC machine on display control software may realize functions and so on Chinese character input, typeface choice, words change, and after carrying on the data processing, may in left side simulate the demonstr

32、ation whole effect, simultaneously “sees namely obtained” demonstration in underneath preview region. Moreover, this control software also has additional functions and so on text designation, mouse localization, coordina

33、te tracing, time date. PC machine realizes through the RS-232 connection with the demonstration part monolithic integrated circuit's correspondence, interrupts the real-time receive and the transmission data message

34、using the monolithic integrated circuit serial port. Has also given dual attention to monolithic integrated circuit's antijamming ability in the system design, enhanced the systems operation reliability effectively.S