CN102339588A - LED (Light Emitting Diode) screen control card - Google Patents
LED (Light Emitting Diode) screen control card Download PDFInfo
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- CN102339588A CN102339588A CN2011102948325A CN201110294832A CN102339588A CN 102339588 A CN102339588 A CN 102339588A CN 2011102948325 A CN2011102948325 A CN 2011102948325A CN 201110294832 A CN201110294832 A CN 201110294832A CN 102339588 A CN102339588 A CN 102339588A
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- led screen
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Abstract
The invention discloses an LED (Light Emitting Diode) screen control card, which comprises a power module, a signal input unit, a processing unit, a storage unit and a signal output unit, wherein the power module is used for supplying power to the whole system; the signal input unit and the storage unit are respectively connected with the processing unit, and the processing unit is connected with the signal output unit; and the processing unit comprises a processor, wherein the processor internally comprises a storage flash, the storage flash is used for storing a word bank, and thus a storage device for storing the word bank does not need to be additionally arranged. The LED screen control card has the advantages of simple structure, low cost, convenience for debugging and maintenance and operation stability.
Description
Technical field
LED of the present invention shows the field, especially for the asynchronous control device of control LED screen.
Background technology
Existing LED display is because its high brightness, wide visible angle, and low-work voltage, low-power consumption, characteristics such as the life-span is long are widely used in social every field, are mainly used in information such as display image, literal, video.
There is complex structure in existing control card, and cost is too high, and maintenance and debugging is complicated, and function singleness sometimes also exists the USB device of part problem such as can not discern.
Summary of the invention
In order to solve the deficiency of prior art, the present invention provides a kind of LED screen control card.
Technical scheme of the present invention is: a kind of LED screen control card, comprise power module, and signal input unit, processing unit, storage unit, signal output unit, power module are the total system power supply; Signal input unit is connected with processing unit respectively with storage unit, and processing unit is connected with signal output unit; Described processing unit comprises processor, and processor inside comprises that storage flash is used to store character library, can not need to be provided with in addition the memory device stores character library.
The signal input unit of aforesaid LED screen control card comprises main frame usb communication interface, and described main frame usb communication interface also is connected with a USB driving circuit, and the USB driving circuit is connected with processor; Wherein the USB driving circuit comprises a CH375 chip, can read the data of various USB devices; And the USB interface on traditional control card all is to utilize processor directly to drive, and causes the part USB device to discern, and the user is produced misunderstandings for this reason or delays its original use or work program.
The USB driving circuit of aforesaid LED screen control card also is connected with a light emitting diode, is used to indicate the duty of USB interface; The crystal oscillator that it is 12MHZ that described USB driving circuit also is connected with a frequency provides logical sequence for the USB driving circuit.This USB interface also can serve as interim mass-memory unit through USB device when the big or inner broadcast program of play content damages.
As preferred version, the signal input circuit of said LED screen control card also comprises one 232 serial ports, and described 232 serial ports are connected with a serial port drive circuit, and the serial port drive circuit is connected with processor.
The storage unit of aforementioned LED screen control card comprises an AT24C1024 chip, is used for storage system configuration file and broadcast program content because need not improve the utilization factor of storage unit in the cell stores character library, indirect saving cost.
As preferred version, described processing unit also comprises work crystal oscillator and a clock crystal oscillator, and the work crystal oscillator is connected with processor respectively with clock crystal oscillator, has guaranteed the smooth and easy work of processor.Aforesaid processor comprises that also a light emitting diode that is connected with processor is used for the duty of instruction processorunit; Said processor also is connected with a clock power, and described clock power is a button battery.
Aforementioned signal output unit comprises interface driving circuit that is connected with processor and the interface that is connected with interface driving circuit.Described interface is 08 interface or 12 interfaces, and the quantity of said interface is at least 1, preferably 2-8.
As preferred version; Described processor also is connected with a reset circuit; Reset circuit adopts the MAX811 chip, and described processor also is connected with at least two light emitting diodes, and the state of control card is indicated in the luminance through the definition diode and the combination of each light emitting diode.
Description of drawings
Fig. 1 mechanism of the present invention connects synoptic diagram.
Fig. 2 embodiments of the invention structural representation.
Among the figure: 1, power module; 2, signal input unit; 3, processing unit; 4, signal output unit; 5, USB interface; 6, USB driving circuit; 7, light emitting diode; 8,232 serial ports; 9, serial port drive circuit; 10, processor; 11, clock power; 12, work crystal oscillator; 13, clock crystal oscillator; 14, interface driving circuit; 15,80 interfaces; 16, reset circuit.
Embodiment
Below in conjunction with specific embodiment the present invention is carried out detailed description, but protection scope of the present invention is not limited thereto.
Like Fig. 1, shown in Figure 2, the present invention designs a kind of LED screen control card, comprises power module 1, signal input unit 2, and processing unit 3, storage unit 17, signal output unit 4, power module 1 is the total system power supply; Signal input unit 2 is connected with processing unit 3 respectively with storage unit 17, and processing unit 3 is connected with signal output unit 4; Described processing unit 3 comprises processor 10, and processor 10 inside comprise that storage flash is used to store character library, can not need to be provided with in addition the memory device stores character library.USB driving circuit 6 also is connected with a light emitting diode 7, is used to indicate the duty of USB interface 5; The crystal oscillator that it is 12MHZ that described USB driving circuit 6 also is connected with a frequency is that USB driving circuit 6 provides logical sequence.
Described signal input circuit 2 also comprises one 232 serial ports 8, and described 232 serial ports 8 are connected with a serial port drive circuit 9, and serial port drive circuit 9 is connected with processor 10.
The storage unit 17 of aforementioned LED screen control card comprises an AT24C1024 chip, is used for storage system configuration file and broadcast program content, because need not deposit 17 storage character libraries in storage unit, has improved the utilization factor of storage unit 17, indirect saving cost.
Described processing unit 3 also comprises a work crystal oscillator 12 and clock crystal oscillator 13, and work crystal oscillator 12 is connected with processor 10 respectively with clock crystal oscillator 13, has guaranteed the smooth and easy work of processor 10.Aforesaid processor 10 also is connected with the duty that light emitting diode is used for instruction processorunit; Said processor 10 also is connected with a clock power 11, and described clock power 11 is a button battery.
80 interfaces 15 that signal output unit 4 comprises the interface driving circuit 14 that is connected with processor 10 and is connected 14 with interface driving circuit, the quantity of said interface is at least 1, preferably 2-8.
Described processor 10 also is connected with a reset circuit 17; Reset circuit 17 adopts the MAX811 chip; Processor 10 also is connected with at least two light emitting diodes, and the state of control card is indicated in the combination of luminance and each light emitting diode through the definition diode.
Claims (10)
1. a LED screen control card comprises power module, signal input unit; Processing unit, storage unit, signal output unit; Power module is the total system power supply, and it is characterized in that: signal input unit is connected with processing unit respectively with storage unit, and processing unit is connected with signal output unit; Described processing unit comprises processor, and processor inside comprises that storage flash is used to store character library.
2. a kind of LED screen control card according to claim 1, it is characterized in that: described signal input unit comprises main frame usb communication interface, and described main frame usb communication interface also is connected with a USB driving circuit, and the USB driving circuit is connected with processor.
3. a kind of LED screen control card according to claim 2, it is characterized in that: described USB driving circuit also is connected with a light emitting diode, is used to indicate the duty of USB interface; The crystal oscillator that it is 12MHZ that described USB driving circuit also is connected with a frequency provides logical sequence for the USB driving circuit.
4. according to the arbitrary described a kind of LED screen control card of claim 1-3, it is characterized in that: described signal input circuit also comprises one 232 serial ports, and described 232 serial ports are connected with a serial port drive circuit, and the serial port drive circuit is connected with processor.
5. a kind of LED screen control card according to claim 4, it is characterized in that: described storage unit comprises an AT24C1024 chip, is used for storage system configuration file and broadcast program content.
6. a kind of LED screen control card according to claim 1, it is characterized in that: described processing unit also comprises a work crystal oscillator and clock crystal oscillator, and described work crystal oscillator is connected with processor respectively with clock crystal oscillator.
7. a kind of LED screen control card according to claim 6, it is characterized in that: described processor comprises that also a light emitting diode that is connected with processor is used for the duty of instruction processorunit; Said processor also is connected with a clock power, and described clock power is a button battery.
8. according to claim 1-3 or the said arbitrary a kind of LED screen control card of 6-7, it is characterized in that: described signal output unit comprises interface driving circuit that is connected with processor and the interface that is connected with interface driving circuit.
9. a kind of LED screen control card according to claim 8, it is characterized in that: described interface is 08 interface or 12 interfaces, and the quantity of said interface is at least one.
10. a kind of LED screen control card according to claim 8; It is characterized in that: described processor also is connected with a reset circuit; Described processor also is connected with at least two light emitting diodes, and the state of control card is indicated in the combination of luminance and each light emitting diode through the definition diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102948325A CN102339588A (en) | 2011-10-08 | 2011-10-08 | LED (Light Emitting Diode) screen control card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102948325A CN102339588A (en) | 2011-10-08 | 2011-10-08 | LED (Light Emitting Diode) screen control card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102339588A true CN102339588A (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102948325A Pending CN102339588A (en) | 2011-10-08 | 2011-10-08 | LED (Light Emitting Diode) screen control card |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625166A (en) * | 2012-04-16 | 2012-08-01 | 武斌 | LED (light-emitting diode) medium screen monitoring system |
| CN103123775A (en) * | 2013-02-01 | 2013-05-29 | 惠州市兆光光电科技有限公司 | Dynamic scanning LED display screen and dynamic scanning display method |
| CN103956150A (en) * | 2014-05-16 | 2014-07-30 | 南京卡乐光电技术有限公司 | Interface definition of LED display system |
-
2011
- 2011-10-08 CN CN2011102948325A patent/CN102339588A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625166A (en) * | 2012-04-16 | 2012-08-01 | 武斌 | LED (light-emitting diode) medium screen monitoring system |
| CN103123775A (en) * | 2013-02-01 | 2013-05-29 | 惠州市兆光光电科技有限公司 | Dynamic scanning LED display screen and dynamic scanning display method |
| CN103123775B (en) * | 2013-02-01 | 2015-08-26 | 惠州市兆光光电科技有限公司 | A kind of dynamic scan LED display and dynamic scanning displaying method |
| CN103956150A (en) * | 2014-05-16 | 2014-07-30 | 南京卡乐光电技术有限公司 | Interface definition of LED display system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: XI AN GOSHINE INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XI AN HUIWEI INFORMATION TECHNOLOGY CO., LTD. Effective date: 20131225 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20131225 Address after: 5, N501 building, floor 710075, hi tech innovation building, Xi'an hi tech Zone, Shaanxi, China Applicant after: XI'AN GUANGXIANG INFORMATION TECHNOLOGY CO., LTD. Address before: 710075, E, block 508, pioneer research & Development Park, 69 Kam Yip Road, Shaanxi, Xi'an Applicant before: Xi'an Huiwei Information Technology Co., Ltd. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120201 |