CN101908315B - LED display system - Google Patents
LED display system Download PDFInfo
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- CN101908315B CN101908315B CN2010101098386A CN201010109838A CN101908315B CN 101908315 B CN101908315 B CN 101908315B CN 2010101098386 A CN2010101098386 A CN 2010101098386A CN 201010109838 A CN201010109838 A CN 201010109838A CN 101908315 B CN101908315 B CN 101908315B
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- 238000004891 communication Methods 0.000 claims abstract description 73
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012937 correction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses an LED display system which comprises an LED control plate and a plurality of LED unit plates connected in series. The LED control plate sends communication signals to a columniation signal input end of an LED communication circuit on the first LED unit plate, the communication signal output end of the LED communication circuit of each LED unit plate is connected with the communication signal input end of the LED communication circuit of next LED unit plate, and the communication signal output end of the LED communication circuit of the last LED unit plate is hung in the air or returns to the LED control plate. The LED communication circuit of each LED unit plate parses out the data according to received communication signal, and provides the data for a first drive circuit data signal input of the LED unit plate through the data output end. A data signal output of each LED drive circuit of the LED unit plate is connected with the data signal input of the next LED drive circuit. The invention has the advantages of high communication speed, low production cost, convenient application support, and the like.
Description
Technical field
The present invention relates to the LED display technique.
Background technology
The LED display system that extensively exists at present, as shown in Figure 1, comprise a LED control panel and several LED cell boards that are connected in series successively:
The LED cell board comprises the BUFFER circuit of an enhancing signal driving force, decoding scheme, several switching tubes and several led drive circuit that produces dynamic reading scan sequential;
The signal of communication that the LED control panel sends comprises sweep signal (SCANI), enable signal (ENI), latch signal (LATI), clock signal (CLKI), data-signal (DIN), and the sweep signal that the LED control panel sends, enable signal, latch signal, clock signal the BUFFER circuit of the LED cell board of each serial connection of process successively drive enhancing;
Sweep signal (SCANO) in each LED cell board after the BUFFER circuit strengthens offers the decoding scheme of this LED cell board, and decoding scheme decoding produces dynamic reading scan sequential control switching tube;
Enable signal (ENO), latch signal (LATO), clock signal (CLKO) in each LED cell board after the BUFFER circuit strengthens offer all led drive circuits in this LED cell board respectively;
The data-signal that the LED control panel sends (DIN) offers the BUFFER circuit of first LED cell board; After driving enhancing, export to first led drive circuit data-signal input end (Din) of first LED cell board; Data-signal is through each led drive circuit of first LED cell board, and under clock signal control, exported to the data-signal input end (Din) of next led drive circuit by the internal displacement register; Similarly; The BUFFER circuit of each LED cell board after this obtains data-signal from a last LED cell board that is connected in series with it; Data-signal is exported to the data-signal input end (Din) of first led drive circuit of this LED cell board after the BUFFER drives strengthens; Data-signal is through each led drive circuit of this LED cell board; And under clock signal control, export to the data-signal input end (Din) of the next led drive circuit of this LED cell board by the internal displacement register, the data-signal of last led drive circuit of this LED cell board is exported to the BUFFER circuit of next LED cell board; The output of the data of last led drive circuit is unsettled on last LED cell board.
The number of it is believed that of above-mentioned LED display system factor shows that through all led drive circuits on each the LED cell board that is connected in series successively refreshing frequency is subject to the quantity of led drive circuit and the communication speed of led drive circuit, and led drive circuit adopts the strict high-voltage great-current large scale technology of cost control mostly; General communication speed is no more than 30MHZ; When showing that resolution is higher, in order to guarantee to show required demonstration refreshing frequency, the LED control panel need send the multi-unit message signal; The LED cell boards of serial connection are successively organized in control more respectively; As shown in Figure 2, under the major applications occasion, often need tens groups of control signals; Cause production cost higher, use and support complicacy.
Summary of the invention
The present invention is intended to solve the deficiency of prior art, provides that a kind of communication speed is high, the LED control panel only need export that a group of communication signals, production cost are low, the LED display system of convenient application support under the major applications occasion.
The LED display system comprises a LED control panel and several LED cell boards that are connected in series successively:
Said LED cell board comprises a LED telecommunication circuit, several switching tubes and several led drive circuits;
Said LED telecommunication circuit comprises signal of communication input end, signal of communication output terminal, dynamic reading scan sequential output terminal, control signal output ends, data output end;
The LED control panel sends the signal of communication input end that signal of communication offers first LED unit onboard led telecommunication circuit; The signal of communication output terminal of the LED telecommunication circuit of each LED cell board after this connects the signal of communication input end of the LED telecommunication circuit of next LED cell board, and the signal of communication output terminal of the LED telecommunication circuit of last LED cell board is unsettled or turn back to the LED control panel;
Said signal of communication comprises the signal of communication output order, dynamically the reading scan sequential is resolved instruction, instruction, data are resolved in the control signal sequential control;
Said each LED unit onboard led telecommunication circuit is according to the signal of communication that receives, and parses signal of communication output and offers the signal of communication input end of the LED telecommunication circuit of next LED cell board through the signal of communication output terminal;
The LED telecommunication circuit of said each LED cell board parses the dynamically switching tube of this LED of reading scan sequential output terminal control cell board of dynamic reading scan sequential and warp according to the signal of communication that receives;
The LED telecommunication circuit of said each LED cell board is according to the signal of communication that receives, and parses the control signal sequential and through the led drive circuit of this LED of control signal output ends control cell board;
The LED telecommunication circuit of said each LED cell board is according to the signal of communication that receives; Parse data; Offer the first driving circuit data-signal input of this LED cell board through data output end; The data-signal output of each led drive circuit of this LED cell board connects the data-signal input of next led drive circuit, and the data-signal output of last led drive circuit of this LED cell board is unsettled.
Said LED unit onboard led telecommunication circuit also comprises the non-volatile memory module; Be used for storage like data such as the required corrections of LED system pointwise correction, by signal of communication input end and the signal of communication output terminal of external control system through the LED telecommunication circuit non-volatile memory module of LED cell board made amendment in the support production of LED telecommunication circuit or the course of work and read.
Beneficial effect of the present invention is: in the LED display system that the present invention proposes; The data that comprise in the signal of communication only need the LED telecommunication circuit through each the LED cell board that is connected in series successively; Again by the led drive circuit on this LED of data output end control cell board of LED telecommunication circuit; Show that refreshing frequency only is subject to the quantity of LED cell board and the communication speed of LED telecommunication circuit, thereby make communication speed obtain the raising of the order of magnitude, the LED control panel only need be exported a group of communication signals under the major applications occasion; Can realize the control of LED display system, this LED display system has advantages such as production cost is low, convenient application support.
Description of drawings
Fig. 1 is traditional LED display system architectures figure
Fig. 2 is traditional LED display system architectures figure
The LED display system architectures figure that Fig. 3 proposes for the present invention
Embodiment
Below in conjunction with accompanying drawing content of the present invention is further specified.
The LED display system, as shown in Figure 3, comprise the LED cell board (31-3M) that a LED control panel (21) and several are connected in series successively:
Said LED cell board comprises a LED telecommunication circuit (41), several switching tubes and several led drive circuits (51-5N);
Said LED telecommunication circuit (41) comprises signal of communication input end, signal of communication output terminal, dynamic reading scan sequential output terminal (SCAN < 7:0 >), control signal output ends (En, Lat, Clk), data output end (DATAOUT);
LED control panel (21) sends signal of communication and offers the signal of communication input end that first LED cell board (31) is gone up LED telecommunication circuit (41); The signal of communication output terminal of the LED telecommunication circuit of each LED cell board after this connects the signal of communication input end of the LED telecommunication circuit of next LED cell board, and the signal of communication output terminal of the LED telecommunication circuit of last LED cell board is unsettled or turn back to the LED control panel;
Said signal of communication comprises the signal of communication output order, dynamically the reading scan sequential is resolved instruction, instruction, data are resolved in the control signal sequential control;
Said each LED unit onboard led telecommunication circuit (41) is according to the signal of communication that receives, and parses signal of communication output and offers the signal of communication input end of the LED telecommunication circuit of next LED cell board through the signal of communication output terminal;
The LED telecommunication circuit (41) of said each LED cell board parses the switching tube that the dynamic reading scan sequential output terminal (SCAN < 7:0 >) of dynamic reading scan sequential and warp is controlled this LED cell board according to the signal of communication that receives;
The LED telecommunication circuit (41) of said each LED cell board is according to the signal of communication that receives, and parses the control signal sequential and controls the led drive circuit of this LED cell board through control signal output ends (En, Lat, Clk);
The LED telecommunication circuit (41) of said each LED cell board is according to the signal of communication that receives; Parse data; Offer first driving circuit (51) the data-signal input of this LED cell board through data output end (DATAOUT); The data-signal output of each led drive circuit of this LED cell board connects the data-signal input of next led drive circuit, and the data-signal output of last led drive circuit of this LED cell board is unsettled.
The method that the LED telecommunication circuit is resolved according to the signal of communication that receives can adopt like the applicant: disclosed method in 200910099888.8 the patent.
Said LED unit onboard led telecommunication circuit also comprises the non-volatile memory module; Be used for storage like data such as the required corrections of LED system pointwise correction, by signal of communication input end and the signal of communication output terminal of external control system through the LED telecommunication circuit non-volatile memory module of LED cell board made amendment in the support production of LED telecommunication circuit or the course of work and read.
What should be understood that is, the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within the protection domain of the present invention.
Claims (1)
1.LED display system is characterized in that comprising a LED control panel and several LED cell boards that are connected in series successively:
Said LED cell board comprises a LED telecommunication circuit, several switching tubes and several led drive circuits;
Said LED telecommunication circuit comprises signal of communication input end, signal of communication output terminal, dynamic reading scan sequential output terminal, control signal output ends, data output end;
The LED control panel sends the signal of communication input end that signal of communication offers first LED unit onboard led telecommunication circuit; The signal of communication output terminal of the LED telecommunication circuit of each LED cell board after this connects the signal of communication input end of the LED telecommunication circuit of next LED cell board, and the signal of communication output terminal of the LED telecommunication circuit of last LED cell board is unsettled or turn back to the LED control panel;
Said signal of communication comprises the signal of communication output order, dynamically the reading scan sequential is resolved instruction, instruction, data are resolved in the control signal sequential control;
Said each LED unit onboard led telecommunication circuit is according to the signal of communication that receives, and parses signal of communication output and offers the signal of communication input end of the LED telecommunication circuit of next LED cell board through the signal of communication output terminal;
The LED telecommunication circuit of said each LED cell board parses the dynamically switching tube of this LED of reading scan sequential output terminal control cell board of dynamic reading scan sequential and warp according to the signal of communication that receives;
The LED telecommunication circuit of said each LED cell board is according to the signal of communication that receives, and parses the control signal sequential and through the led drive circuit of this LED of control signal output ends control cell board;
The LED telecommunication circuit of said each LED cell board is according to the signal of communication that receives; Parse data; Offer the first driving circuit data-signal input of this LED cell board through data output end; The data-signal output of each led drive circuit of this LED cell board connects the data-signal input of next led drive circuit, and the data-signal output of last led drive circuit of this LED cell board is unsettled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101098386A CN101908315B (en) | 2010-02-11 | 2010-02-11 | LED display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101098386A CN101908315B (en) | 2010-02-11 | 2010-02-11 | LED display system |
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| Publication Number | Publication Date |
|---|---|
| CN101908315A CN101908315A (en) | 2010-12-08 |
| CN101908315B true CN101908315B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101098386A Expired - Fee Related CN101908315B (en) | 2010-02-11 | 2010-02-11 | LED display system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854608B (en) * | 2012-11-30 | 2018-10-02 | 罗姆股份有限公司 | LED display unit, LED display and LED display system |
| CN104537986A (en) * | 2015-01-21 | 2015-04-22 | 杭州士兰微电子股份有限公司 | LED module, control method of LED module, and LED drive circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567163A (en) * | 2009-05-27 | 2009-10-28 | 西安诺瓦电子科技有限公司 | Method for supporting pointwise correction of LED display screen |
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2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567163A (en) * | 2009-05-27 | 2009-10-28 | 西安诺瓦电子科技有限公司 | Method for supporting pointwise correction of LED display screen |
Non-Patent Citations (2)
| Title |
|---|
| 王景军等.应用于LED 显示系统的单线串接通信方法.《中国集成电路》.2010,(第1期),49-52. * |
| 郑宏军等.1-Wire单总线器件技术规范及应用研究.《电子技术》.2004,(第9期),39-42. * |
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| Publication number | Publication date |
|---|---|
| CN101908315A (en) | 2010-12-08 |
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Effective date of registration: 20161222 Address after: Hangzhou City, Zhejiang province Xihu District District village two Xueyuan Tsui Chunxiao Garden 8 Room 1201 Patentee after: Zhao Jiandong Address before: Suzhou City, Jiangsu Province, Suzhou Industrial Park 215124 Xinghu Street No. 328 Creative Industry Park 1-B602 unit Patentee before: Suzhou Junying Electronic Technology Co., Ltd. |
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Effective date of registration: 20191216 Address after: 310012 Room 408, building 2, No.9, Huanggushan Road, Xihu District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU XINXUN TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang province Xihu District District village two Xueyuan Tsui Chunxiao Garden 8 Room 1201 Patentee before: Zhao Jiandong |
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