CN201111845Y

CN201111845Y - ARM chip control LED display screen U disk control system

Info

Publication number: CN201111845Y
Application number: CNU2007200405893U
Authority: CN
Inventors: 鲍海军
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-12
Filing date: 2007-07-12
Publication date: 2008-09-10
Anticipated expiration: 2017-07-12

Abstract

The utility model discloses a U-disk control system provided with an LED display screen controlled by an ARM chip. The system comprises a U-disk socket (1), an interface circuit (2), an ARM circuit (3), an output circuit (4) and an LED display circuit (5). The U-disk socket (1) is connected with the interface circuit (2) which is connected with the ARM circuit (3). The ARM circuit (3) is connected through the output circuit (4) with the LED display circuit (5). The utility model adopts other computers which are irrelevant to the LED screen to input data to the U-disk, and the relevant file is read out on the LED display screen through the U-disk. Then, each screen has no need to be equipped with one computer and the trouble of communication wiring can be avoided at the same time. As the gradual popularization of an ARM chip, the advantages of small volume, high capability and low price, etc. cannot be exceeded by that of a common SCM. Adopting the ARM chip as a micro process system brings a better effect and results in a further popularization of the U-disk control system provided with an LED display screen.

Description

The USB flash disk control system of ARM chip controls LED display

Technical field

The utility model relates to the LED display of ARM chip controls, is specifically related to the USB flash disk control system of ARM chip controls LED display.

Background technology

The LED display control system is broadly divided into two classes at present, one homochronousness control system, another kind of asynchronous control system, in asynchronous control system, have a kind of with the ARM chip controls, in this class of ARM chip controls, the screen message content replaces with general employing serial ports, network interface communication modes or telepilot remote control control mode, if use serial ports, the network interface communication modes, even very little screen also will be followed the platform computer, whole cost is high and inconvenient, if use a teleswitch, because general LED display all is placed on the public place, telepilot is easily lost and the infrared ray of telepilot is subject to disturb, and in a lot of occasion inconveniences, and wants on-the-spot layout when needing to change content, these disadvantages affect are to popularizing that LED display is used, at present this electronic information storage media of USB flash disk is progressively popularized, and uses the transmission media of USB flash disk as the LED display information content, will give LED display particularly the compact LED display screen bring once more deep popularizing.

Summary of the invention

The purpose of this utility model is: the USB flash disk control system that a kind of ARM system control LED display is provided, on the basis of the original interface of control system such as serial ports, network interface or Remote Control Interface, increase the USB flash disk interface, associated documents on the computing machine are examined USB flash disk, then USB flash disk is inserted on the USB flash disk interface of LED display, control system just can be discerned this document, and send demonstration after file handled automatically, make the information interchange of LED display and computing machine more convenient.

The technical scheme that the utility model technical solution problem is adopted is: this control system is made up of USB flash disk socket, interface circuit, ARM circuit, output circuit, LED display circuit, the USB flash disk socket is connected on the interface circuit, interface circuit connects the ARM circuit, and the ARM circuit connects the LED display circuit by output circuit.

When USB flash disk is inserted on the USB flash disk socket, the ARM chip is searched the relevant information file in the USB flash disk, found and just judged it is pattern file or text, if pattern file, directly read in buffer area, if text, then convert literal and symbolic information to lattice information and store buffer area into, finish information interchange.

The beneficial effects of the utility model are: 1. use the irrelevant computer input display message of other and LED screen to USB flash disk, by USB flash disk associated documents are read in LED display, each screen needn't be equipped with computer specially, can save simultaneously the trouble of communication wiring, make LED display can be fit to more conditions; 2. along with progressively the popularizing of ARM chip, its volume is little, performance is high, price is low etc., and advantage is that common single-chip microcomputer is incomparable, will bring better effect with the ARM chip as microprocessing systems, will make the USB flash disk control system of LED display more deeply universal.

Description of drawings

Fig. 1 is the utility model FB(flow block).

Fig. 2 is the utility model circuit diagram.

Among the figure: 1, USB flash disk socket, 2, interface circuit, 3, the ARM circuit, 4, output circuit, 5, the LED display circuit.

Embodiment:

As shown in Figure 1, this system is made up of USB flash disk socket 1, interface circuit 2, ARM circuit 3, output circuit 4 and LED display circuit 5, USB flash disk socket (1) is connected on the interface circuit 2, and interface circuit 2 is connected with ARM circuit 3, and ARM circuit 3 connects LED display circuit 5 by output circuit 4.

As shown in Figure 2,2,3 pins of USB flash disk socket J1 are connected on the 10th, 11 pin of interface chip UU1,1 pin of USB flash disk socket J1 connects ground, 4 pin of USB flash disk socket connect power supply, the D0-D7 data bus of interface chip UU1 is connected to the acute bus of P0.7-P0.15 number of ARM chip, the P0.0-P0.7 of ARM chip is by the 1st, 3,4,8,27 pin of control bus connecting interface chip UU1, and the ARM chip outputs to display circuit by the U4 in the output circuit, U5, U6.

The utility model is a kind of LED display that has the USB flash disk read-write interface, if display text information, need on computers file to be preserved into * .TXT plain text format file, examine under the LED file of USB flash disk, if picture file needs it is preserved into * .DAT file, examine under the LED file of USB flash disk, if animation file, need it is preserved into * .DH file, also examine under the LED file of USB flash disk; Open the display screen power supply, U is inserted on the USB flash disk socket of display screen, the ARM circuit of display screen will be analyzed the USB flash disk content automatically, if text message, will be after the system handles by long preservation to shielding on the interior storer, USB flash disk is extracted also and can be moved, if a large amount of pictures and animation file need that then USB flash disk is inserted in screen and go up operation.

USB flash disk of the present utility model comprises other electronic product with USB flash disk function.

Claims

1. the USB flash disk control system of ARM chip controls LED display, it is characterized in that: this control system is made up of USB flash disk socket (1), interface circuit (2), ARM circuit (3), output circuit (4) and LED display circuit (5), USB flash disk socket (1) is connected on the interface circuit (2), interface circuit (2) is connected with ARM circuit (3), and ARM circuit (3) connects LED display circuit (5) by output circuit (4).

2. the USB flash disk control system of ARM chip controls LED display according to claim 1, it is characterized in that: 2,3 pins of USB flash disk socket J1 are connected on the 10th, 11 pin of interface chip UU1,1 pin of USB flash disk socket J1 connects ground, 4 pin of USB flash disk socket connect power supply, the D0-D7 data bus of interface chip UU1 connects the P0.7-P0.15 data bus of ARM chip, the P0.0-P0.7 of ARM chip is by the 1st, 3,4,8,27 pin of control bus connecting interface chip UU1, and the ARM chip outputs to the LED display circuit by the U4 in the output circuit, U5, U6.

3. the USB flash disk control system of ARM chip controls LED display according to claim 1 is characterized in that: USB flash disk comprises other electronic product with USB flash disk function.