CN101877207A - LED display screen system and control method - Google Patents
LED display screen system and control method Download PDFInfo
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- CN101877207A CN101877207A CN200910237768XA CN200910237768A CN101877207A CN 101877207 A CN101877207 A CN 101877207A CN 200910237768X A CN200910237768X A CN 200910237768XA CN 200910237768 A CN200910237768 A CN 200910237768A CN 101877207 A CN101877207 A CN 101877207A
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Abstract
The invention discloses an LED display screen system which is characterized by comprising an LED screen signal generating device, a plurality of sub-controllers and a plurality of display modules, wherein, the sub-controllers comprise a cascade input module, a cascade output module, a storage module and a display control module, the sub-controllers in a cascade system have a small quantity of interfaces, and the sub-controllers can be cascaded in a random order.
Description
Technical field
The present invention relates to the LED display field, the cascade structure and the control method of in particular a kind of LED display system.
Background technology
In present LED field of display systems, adopt following two kinds of screen body signal connectivity scenarios usually:
Scheme 1: as shown in Figure 1, the LED display system is made up of LED screen body signal generation apparatus 12 (being generally computing machine) and LED screen body 111 two parts, and LED screen body signal generation apparatus 12 shields the body shows signal by signal wire with LED and sends to LED screen body 111.LED screen body 111 is spliced according to certain position relation by several LED casings 11, carries out cascade according to horizontal direction and vertical direction by signal wire between each LED casing 11.Each casing is connected to a fixed with a LED display controller 1 (being generally programmable logic device (PLD), as FPGA) again, shows control by 1 pair of casing 11 of controller; The shortcoming of this scheme is: because the hardware using programmable logic device (PLD) of LED display controller 1, need before the system works to connect computing machine hardware program is downloaded in the middle of the device by downloading line, but potential range far or because of LED shields the body decorating position is difficult for climbing between each controller in actual applications, thereby strengthens the workload and the corresponding maintenance difficulties of down operation; In addition, (3,1 input, 1 horizontal output, 1 vertical output) are more for the interface between each sub-controller of this scheme on required connecting line and the sub-controller, increased the cost and the complexity of system.
Scheme 2: as shown in Figure 2, the LED display system is made up of LED screen body signal generation apparatus 12 (being generally computing machine) and LED screen body 111 two parts, and the former shields the body shows signal by signal wire with LED and sends to LED screen body 111.LED screen body 111 is spliced according to certain position relation by several LED casings 11, and the order of connecting successively according to adjacent casing by signal wire between each LED casing is carried out cascade.Each casing 11 is connected to a fixed with a LED display controller 1 (being generally programmable logic device (PLD), as FPGA) again, shows control by 1 pair of casing 11 of controller; The shortcoming of this scheme is: because adopt the mode of adjacent casing series connection, after each casing 11 of LED display installs and fixes, for guaranteeing the correctness of entire display screen displaying contents, the order of connection between each casing 11 also just has been fixed, but, between the adjacent casing because centre may barrier is inconvenient directly to be connected because of existing in the actual conditions, thereby has increased the difficulty of construction.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
Technical matters to be solved by this invention is, at the deficiencies in the prior art, a kind of LED display cascade system at first is provided, the sub-controller interface in this cascade system is less, and can be between each sub-controller, and needn't change the position according to the random order cascade; Next provides a kind of control method that is applied to above-mentioned LED display cascade system.
Technical scheme of the present invention is as follows:
A kind of LED display system comprises: some display modules of LED screen body signal generation apparatus, some sub-controllers and corresponding connection with each described sub-controller;
Described sub-controller comprises cascade load module, cascade output module, memory module and display control module, described display control module is connected between described cascade load module and the described cascade output module, described memory module is connected with described display control module, be used to read and store the location information data of described sub-controller, call for described display control module; Each described sub-controller is connected in series by described cascade load module and described cascade output module respectively;
Described LED screen body signal generation apparatus is connected with the cascade load module of first sub-controller that is positioned at initiating terminal connected in series, is used for generating according to the locus of each described sub-controller the location information data of each described sub-controller; The cascade load module that also is used to generate the serial video data of described each lamp point of LED display and sends to described first sub-controller, wherein, described serial video data comprises station location marker, and described station location marker is corresponding one by one with described location information data;
Described display control module is according to the described location information data that reads from described memory module, and the described location mark in the described serial video data, the corresponding video data of intercepting from described serial video data, send to the corresponding described display module that connects of the described sub-controller in its place, to realize luminous demonstration.
Described LED display system, described LED screen body signal generation apparatus is provided with a locus module, be used to receive the information of the locus of each described sub-controller, generate the location information data of each described sub-controller according to the locus of each described sub-controller.
Described LED display system, described LED screen body signal generation apparatus is provided with a station location marker module, be used for location information data according to each described sub-controller, the corresponding one by one station location marker that generates each described sub-controller shields the cascade load module that the body signal generation apparatus generates the serial video data of described each lamp point of LED display in view of the above and sends to described first sub-controller by described LED.
Described LED display system, described LED screen body signal generation apparatus adopts USB, cable network or radio network interface, is connected with the cascade load module of described first sub-controller.
Described LED display system, each described display module and each described sub-controller connect one to one respectively.
Described LED display system, described memory module is a non-volatile memory chip.
A kind of control method that is applied to above-mentioned LED display system may further comprise the steps:
Step 1: the location information data that generates each sub-controller connected in series;
Step 2: transmit described location information data to each described sub-controller;
Step 3: each described sub-controller is stored in described location information data in its memory module respectively;
Step 4:, generate the serial video data of described each lamp point of LED display and send to each described sub-controller according to the locus of each described sub-controller; Wherein, described serial video data comprises station location marker, and described station location marker is corresponding one by one with described location information data;
Step 5: each described display control module is according to respectively from the described memory module of its corresponding described sub-controller, read corresponding described location information data, and, the described location mark that comprises in the described serial video data, the corresponding video data of intercepting from described serial video data in view of the above.
Described control method is by USB, cable network or radio network interface transmission data.
Described control method adopts the non-volatile memories mode to carry out data storage.
Described control method adopts first-in first-out to carry out data storage.
Adopt such scheme, the present invention is by being provided with the memory module of storage address information data in sub-controller, and make the sub-controller can be intelligentized connected in series arbitrarily, and need be not connected in series according to permanent order, can break through the restriction of installation environment in the middle of using.
Description of drawings
Fig. 1 is the synoptic diagram of prior art scheme 1;
Fig. 2 is the synoptic diagram of prior art scheme 2;
Fig. 3 is the functional module structure synoptic diagram of sub-controller of the present invention;
Fig. 4 is a kind of structural representation of LED display of the present invention;
Fig. 5 is another structural representation of LED display of the present invention;
Fig. 6 is the structural representation of cascade serial video data bag of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 3, Figure 4, the present invention at first provides a kind of LED display system, it comprises: some sub-controllers 10 of LED screen body signal generation apparatus 12, cascade successively are to sub-controller 10N, and the display module 11 of the corresponding connection of some and above-mentioned sub-controller is to display module 11N.
LED screen body signal generation apparatus 12 and cascade sub-controller 10 to sub-controller 10N initiating terminal connected in series is that first sub-controller 10 is connected, obtain the locus of each sub-controller by artificial observation, for example sub-controller is arranged in which which row of display screen box body, be input to afterwards in the LED screen body signal generation apparatus 12, LED screen body signal generation apparatus 12 generates the location information data of sub-controller 10 to sub-controller 10N; Perhaps, import the locus of each sub-controller by program; For example, by the form coding that pre-sets,, import the locus of each sub-controller by computing machine, hand-held entry terminal or computer-readable recording medium etc.LED screen body signal generation apparatus 12 also generates the serial video data of each lamp point of LED display and sends to sub-controller 10N to sub-controller 10, and the serial video data includes and the corresponding location mark of above-mentioned location information data; Some display modules 11 to display module 11N and sub-controller 10 to the corresponding connection of sub-controller 10N, according to of the serial video data luminous demonstration of each display module 11 to display module 11N correspondence.
As shown in Figure 3, sub-controller 10 among the present invention is identical to sub-controller 10N structure, with sub-controller 10 is the example explanation, it comprises cascade load module 13, cascade output module 16, memory module 15 and display control module 14, and sub-controller 10 is connected in series by cascade load module 13 and cascade output module 16 to sub-controller 10N; Display control module 14 is connected between cascade load module 13 and the cascade output module 16, memory module 15 is connected with display control module 14, be used to store the location information data of sub-controller 10, display control module 14 is according to the location information data that reads from memory module 15, and the described location mark that comprises in the described serial video data, the corresponding video data of intercepting from described serial video data.
Preferably, the memory module in the above-mentioned LED display system adopts non-volatile memory chip, and the later data of power down can not lost like this, do not need to write once more after powering on next time.
In the practical application, after each box location of LED display is fixing, condition of construction according to reality connects each casing, operation LED screen body signal generation apparatus 12, generate the location information data of each sub-controller, tandem inlet by each sub-controller is written in the middle of the memory module 15, generate and send the cascade video data of screen body then by LED screen body signal generation apparatus, each casing is according to the described location mark that comprises in separately positional information and the described serial video data, intercept each self-corresponding video data, finish demonstration.
Embodiment 2
As shown in Figure 5, entire display screen is divided into A～F totally 6 zones, corresponding each casing is casing 111, casing 1113, casing 1115, casing 1111, casing 1112, casing 1114, corresponding each sub-controller is sub-controller 10, sub-controller 103, sub-controller 105, sub-controller 101, sub-controller 102, sub-controller 104, and corresponding display module is respectively display module 11, display module 1103, display module 1105, display module 1101, display module 1102, display module 1104.Suppose between casing 111 and 1113, between 1113 and 1115 owing to the erecting stage reason can't directly be connected, therefore adopted from casing 111 and begun cascade casing 1111 successively, casing 1112, casing 1113, casing 1114, sub-controller 10 in the casing 1115 is to sub-controller 105, finish the structure of LED display system, in like manner, if between other any casings owing to the working-yard reason can't directly connect, also can adopt other forms of cascade system, solve the difficult problem that the working-yard limitation is brought, broken through in the prior art, after box location is fixing, the fixing thereupon present situation of annexation between each casing.
Preferably, can in above-mentioned LED screen body signal generation apparatus 12, a locus module (not shown) be set, be used to receive the information of the locus of each described sub-controller, generate the location information data of each described sub-controller then according to the locus of each described sub-controller.For example, by the active receive mode, as the mode of obtaining information automatically or on time, by modes such as trigger conditions, receive the information of the locus of each described sub-controller; Perhaps, by passive receive mode,, receive the information of the locus of each described sub-controller as the information that receives input etc.
Preferably, in the above-mentioned LED screen body signal generation apparatus 12 a station location marker module (not shown) can also be set, be used for location information data according to each described sub-controller, the corresponding one by one station location marker that generates each described sub-controller shields the cascade load module that the body signal generation apparatus generates the serial video data of described each lamp point of LED display in view of the above and sends to described first sub-controller 10 by described LED.
Preferably, above-mentioned LED screen body signal generation apparatus 12 adopts USB, cable network or radio network interface, is connected with the cascade load module of described first sub-controller.
Preferably, each described display module 11 connects one to one respectively to display module 11N and each described sub-controller 10 to sub-controller 10N.
Embodiment 3
The present invention also provides a kind of control method of above-mentioned LED display, is applied in above-mentioned each routine LED display system, and this method may further comprise the steps
Step 1: the location information data that generates each sub-controller connected in series;
Step 2: transmit described location information data to each described sub-controller;
Step 3: each described sub-controller is stored in described location information data in its memory module respectively;
Step 4:, generate the serial video data of described each lamp point of LED display and send to each described sub-controller according to the locus of each described sub-controller; Wherein, described serial video data comprises station location marker, and described station location marker is corresponding one by one with described location information data;
Step 5: each described display control module is according to respectively from the described memory module of its corresponding described sub-controller, read corresponding described location information data, and, the described location mark that comprises in the described serial video data, the corresponding video data of intercepting from described serial video data in view of the above.
For example, in above-mentioned arbitrary steps, by USB, cable network or radio network interface transmission data.
In conjunction with Fig. 5 and Fig. 6, specifically, build system according to connection order shown in Figure 5, after finishing system hardware structure and building, generate the location information data of sub-controller 10 by screen body signal generation apparatus 12 to sub-controller 105, for example sub-controller 10 to the positional information of sub-controller 105 can be A, B, C, D, E, F, pass through signal wire, from screen body signal generation apparatus 12 to sub-controller 10 to sub-controller 105 download location information data A, B, C, D, E, F, with location information data A, B, C, D, E, F is stored in sub-controller 10 respectively successively to the storage chip of sub-controller 105, by shielding the tandem incoming interface that body signal generation apparatus 12 generates the serial video data of each lamp point of LED display and sends to sub-controller 10, in order to make each sub-controller identify local data in the serial data, need in the serial data of each sub-controller correspondence, be provided with and the corresponding location mark of above-mentioned location information data, as shown in Figure 6, serial data comprises the video data of sub-controller 10 to 6 viewing areas of sub-controller 105 correspondences, and each partial data beginning all has a location mark, be used to identify this partial data and be which partial data of screen body, when each sub-controller intercepts packet successively, select the corresponding that part of data of positional information of storing in the storage chip of location mark and each sub-controller in the packet, be used for the demonstration of casing at the corresponding levels, after intercepting finishes, the entire packet former state is transmitted to subordinate's sub-controller, intercepted each self-corresponding video data up to each controller, each casing is finished demonstration simultaneously.
Preferably, the memory module in the above-mentioned LED display system adopts non-volatile memory chip, and the later data of power down can not lost like this, do not need to write once more after powering on next time.
Preferably, above-mentioned storage chip adopts first-in first-out to carry out data storage.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a LED display system is characterized in that, comprising: some display modules of LED screen body signal generation apparatus, some sub-controllers and corresponding connection with each described sub-controller;
Described sub-controller comprises cascade load module, cascade output module, memory module and display control module, described display control module is connected between described cascade load module and the described cascade output module, described memory module is connected with described display control module, be used to read and store the location information data of described sub-controller, call for described display control module; Each described sub-controller is connected in series by described cascade load module and described cascade output module respectively;
Described LED screen body signal generation apparatus is connected with the cascade load module of first sub-controller that is positioned at initiating terminal connected in series, is used for generating according to the locus of each described sub-controller the location information data of each described sub-controller; The cascade load module that also is used to generate the serial video data of described each lamp point of LED display and sends to described first sub-controller, wherein, described serial video data comprises station location marker, and described station location marker is corresponding one by one with described location information data;
Described display control module is according to the described location information data that reads from described memory module, and the described location mark in the described serial video data, the corresponding video data of intercepting from described serial video data, send to the corresponding described display module that connects of the described sub-controller in its place, to realize luminous demonstration.
2. LED display according to claim 1 system, it is characterized in that, described LED screen body signal generation apparatus is provided with a locus module, be used to receive the information of the locus of each described sub-controller, generate the location information data of each described sub-controller according to the locus of each described sub-controller.
3. LED display according to claim 2 system, it is characterized in that, described LED screen body signal generation apparatus is provided with a station location marker module, be used for location information data according to each described sub-controller, the corresponding one by one station location marker that generates each described sub-controller shields the cascade load module that the body signal generation apparatus generates the serial video data of described each lamp point of LED display in view of the above and sends to described first sub-controller by described LED.
4. LED display according to claim 1 system is characterized in that, described LED screen body signal generation apparatus adopts USB, cable network or radio network interface, is connected with the cascade load module of described first sub-controller.
5. LED display according to claim 1 system is characterized in that each described display module and each described sub-controller connect one to one respectively.
6. LED display according to claim 1 system is characterized in that described memory module is a non-volatile memory chip.
7. a control method that is applied to the described LED display of claim 1 system is characterized in that, may further comprise the steps:
Step 1: the location information data that generates each sub-controller connected in series;
Step 2: transmit described location information data to each described sub-controller;
Step 3: each described sub-controller is stored in described location information data in its memory module respectively;
Step 4:, generate the serial video data of described each lamp point of LED display and send to each described sub-controller according to the locus of each described sub-controller; Wherein, described serial video data comprises station location marker, and described station location marker is corresponding one by one with described location information data;
Step 5: each described display control module is according to respectively from the described memory module of its corresponding described sub-controller, read the described location mark that comprises in corresponding described location information data, the described serial video data, in view of the above the corresponding video data of intercepting from described serial video data.
8. control method according to claim 7 is characterized in that, by USB, cable network or radio network interface transmission data.
9. control method according to claim 7 is characterized in that, adopts the non-volatile memories mode to carry out data storage.
10. control method according to claim 7 is characterized in that, adopts first-in first-out to carry out data storage.
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| CN105741757A (en) * | 2016-04-27 | 2016-07-06 | 南京大学 | High-refresh-rate 1/16 scanning P4 full-color LED display device and scanning method thereof |
| CN106681678A (en) * | 2017-01-06 | 2017-05-17 | 浙江宇视科技有限公司 | Method and device for modifying splicing screen address parameters |
| CN107103851A (en) * | 2017-06-21 | 2017-08-29 | 郑州胜龙信息技术股份有限公司 | A kind of LED curved surfaces three-dimensional shows system |
| WO2021036500A1 (en) * | 2019-08-26 | 2021-03-04 | 深圳蓝普科技有限公司 | Spliced display system and signal control method therefor |
| CN113436572A (en) * | 2021-05-17 | 2021-09-24 | 卡莱特云科技股份有限公司 | Correction method and device irrelevant to direction of LED box body and LED display screen |
| CN113436572B (en) * | 2021-05-17 | 2022-02-22 | 卡莱特云科技股份有限公司 | Correction method and device irrelevant to direction of LED box body and LED display screen |
| CN113096591A (en) * | 2021-06-08 | 2021-07-09 | 成都成电光信科技股份有限公司 | LED display video transmission method |
| CN113096591B (en) * | 2021-06-08 | 2021-08-27 | 成都成电光信科技股份有限公司 | LED display video transmission method |
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| CN114203102A (en) * | 2021-11-04 | 2022-03-18 | 东莞阿尔泰显示技术有限公司 | Display data distribution method and system of display module |
| CN114093314A (en) * | 2022-01-19 | 2022-02-25 | 北京显芯科技有限公司 | Address setting method and device and display device |
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