CN106448550B - Automatic identification method and device for LED screen parameters - Google Patents
Automatic identification method and device for LED screen parameters Download PDFInfo
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- CN106448550B CN106448550B CN201611227207.8A CN201611227207A CN106448550B CN 106448550 B CN106448550 B CN 106448550B CN 201611227207 A CN201611227207 A CN 201611227207A CN 106448550 B CN106448550 B CN 106448550B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The invention relates to an automatic identification method of LED screen parameters, which comprises the following steps: setting a read-back signal, a locking signal and a clock signal by a screen control card driving interface; acquiring the code of a parallel-serial chip of the screen module through the read-back signal, the locking signal and the clock signal; and acquiring parameters of the screen module according to the codes. The read-back signals are connected in series between the modules, and the number of the modules is judged by judging the number of the effective codes, so that the transverse resolution of the screen is obtained. The read-back signal, clock and lock signal are configured on each drive interface. And obtaining the longitudinal resolution of the screen by judging the number of effective interfaces of the read-back signals. The technology can prevent the artificial damage of the module in the debugging process; the engineering debugging process is simplified, and the working efficiency is improved; the technical threshold of the whole screen debugging of the LED is greatly reduced.
Description
Technical Field
The invention relates to the field of LED screens, in particular to an automatic identification method and device for LED screen parameters.
Background
LED screen (LED panel): the LED is a light emitting diode, which is abbreviated as LED in english. The general appearance of the display is that the display is displayed by turning on or off a plurality of small lamps which are usually red, green and blue. The large display screen is used for displaying various information such as characters, graphics, images, animation, quotation, video signals and the like. The screen resolution of the existing LED screen and the parameters of the display module are set manually, which requires operators to have relevant professional knowledge and complicated setting process.
Disclosure of Invention
Therefore, the invention provides the automatic LED screen parameter identification method which simplifies the engineering debugging process and improves the working efficiency.
In order to achieve the above object, the inventor provides an automatic identification method for LED screen parameters, comprising:
setting a read-back signal by a screen control card driving interface;
other signals of a screen control card driving interface are used as a locking signal and a clock signal;
acquiring the code of a parallel-serial chip of the screen module through the read-back signal, the locking signal and the clock signal;
and acquiring parameters of the screen module according to the codes.
Further optimized, the parameters comprise a screen horizontal resolution and a screen vertical resolution.
Further preferably, the screen lateral resolution identification is obtained by means of data signal concatenation.
Further optimizing, the screen lateral resolution identification specifically comprises:
the screen control card sends a locking signal to the parallel-serial chip and continuously outputs a serial clock signal;
stopping when the read 8-bit data is judged to be all 0 or 1;
calculating the number of output clock signals to obtain the number of serial-parallel serial chips;
and acquiring the transverse resolution of the screen.
Further optimizing, the screen longitudinal resolution identification specifically comprises:
each drive interface of the screen control card is provided with a read-back signal;
the screen control card judges the number of interfaces of the effective readback signals;
and acquiring the longitudinal resolution of the screen.
The inventor also provides an automatic identification device for LED screen parameters, which comprises:
the signal input module is used for reading the return data of the module;
the locking and clock module uses other signals of the driving interface as a locking signal and a clock signal;
the code acquisition module is used for acquiring the codes of the parallel-serial chip of the screen module through the read-back signal, the locking signal and the clock signal;
and the parameter acquisition module is used for acquiring the parameters of the screen module according to the codes.
Further optimized, the parameters comprise a screen horizontal resolution and a screen vertical resolution.
And further optimizing, the system further comprises a screen transverse resolution identification module, and the screen transverse resolution identification module is used for acquiring the screen transverse resolution in a data signal series connection mode.
Further preferably, the screen lateral resolution identifying module specifically includes: the screen control card is used for sending a locking signal to the parallel-to-serial chip and continuously outputting a serial clock signal; stopping when the read 8-bit data is judged to be all 0 or 1; calculating the number of output clock signals to obtain the number of serial-parallel serial chips; and acquiring the transverse resolution of the screen.
The system is further optimized, and further comprises a screen longitudinal resolution acquisition module, wherein the screen longitudinal resolution acquisition module is used for allocating a clock, a locking signal and a read-back signal on each driving interface of the screen control card; the screen control card judges the number of interfaces of the effective readback signals; and acquiring the longitudinal resolution of the screen.
Different from the prior art, the read-back signals are connected in series between the modules in the technical scheme, and the number of the modules is judged by judging the number of effective codes, so that the transverse resolution of the screen is obtained. The read-back signal, clock and lock signal are configured on each drive interface. And obtaining the longitudinal resolution of the screen by judging the number of effective interfaces of the read-back signals. The technology can prevent the artificial damage of the module in the debugging process; the engineering debugging process is simplified, and the working efficiency is improved; the technical threshold of the whole screen debugging of the LED is greatly reduced.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for automatically identifying parameters of an LED screen according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating parameter identification of the parallel-to-serial chip 74HC165 according to an exemplary embodiment;
fig. 3 is a schematic structural diagram of an automatic LED screen parameter identification apparatus according to an embodiment.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the method for automatically identifying LED screen parameters of the present embodiment includes:
step S110: setting a read-back signal, a locking signal and a clock signal by a screen control card driving interface;
step S120: acquiring the code of a parallel-serial chip of the screen module through the read-back signal, the locking signal and the clock signal;
step S130: and acquiring parameters of the screen module according to the codes.
The method comprises the steps that an original control card is output to an interface of a screen module, one path of signals are set to be bidirectional transmission or one path of read-back signals are added, other signals on the original interface are used as locking signals and clock signals, input codes of a parallel-serial-connection chip on the screen module are obtained through the three paths of signals, and accordingly parameter data of the screen module are obtained according to the codes. The module is prevented from being damaged artificially in the debugging process; the engineering debugging process is simplified, and the working efficiency is improved; the technical threshold of the whole screen debugging of the LED is greatly reduced.
In this embodiment, the parameters include module parameters, a screen horizontal resolution, and a screen vertical resolution. It is determined how much information is displayed on the screen, measured in horizontal and vertical pixels, i.e., screen lateral resolution and screen longitudinal resolution.
Referring to fig. 2, taking the parallel-to-serial chip 74HC165 as an example, the screen horizontal resolution identification is obtained by serially connecting data signals. The screen lateral resolution identification specifically comprises: the screen control card sends a locking signal to the parallel-serial chip 74HC165 and continuously outputs a serial clock signal; stopping when the read 8-bit data is judged to be all 0 or 1; calculating the number of output clock signals to obtain the number of the serial-parallel serial chips 74HC 165; and acquiring the transverse resolution of the screen. The screen longitudinal resolution identification specifically comprises: each drive interface of the screen control card is provided with a read-back signal; the screen control card judges the number of interfaces of the effective signal flow; and acquiring the longitudinal resolution of the screen. The read-back data signals between the front module and the rear module are connected in series, the module codes are input into the parallel-serial chip 74HC165, the serial clock signals and the locking signals are input into the parallel-serial chip 74HC165 from the screen control card, and the locking signals and the serial clock signals are input into the next module from the previous module through the signal driver; the encoded data is read from the parallel-serial chip 74HC165 and output to the screen control card, thereby calculating the screen lateral resolution and the screen longitudinal resolution. The method has the advantages of automatically identifying the screen resolution and the screen module parameters, effectively preventing the module from being damaged by people in the debugging process, simplifying the engineering debugging process, improving the working efficiency and greatly reducing the technical threshold of the whole screen debugging of the LED.
Referring to fig. 3, in another embodiment, an apparatus for automatically identifying parameters of an LED screen includes:
the signal input module 310 is used for setting a read-back signal, a locking signal and a clock signal by the screen control card driving interface;
the code acquisition module 320 is used for acquiring the codes of the parallel-serial chips of the screen module through the read-back signal, the locking signal and the clock signal;
the parameter obtaining module 330 is configured to obtain parameters of the screen module according to the codes.
In this embodiment, the parameters include module parameters, a screen horizontal resolution, and a screen vertical resolution.
In this embodiment, the display device further includes a screen horizontal resolution identifying module, and the screen horizontal resolution identifying module is configured to obtain the screen horizontal resolution in a manner of serial connection of data signals. The screen transverse resolution identification module specifically comprises: the screen control card is used for sending a locking signal to the parallel-to-serial chip and continuously outputting a serial clock signal; stopping when the read 8-bit data is judged to be all 0 or 1; calculating the number of output clock signals to obtain the number of serial-parallel serial chips; and acquiring the transverse resolution of the screen. The device also comprises a screen longitudinal resolution acquisition module, wherein the screen longitudinal resolution acquisition module is used for matching a read-back signal on each driving interface of the screen control card; the screen control card judges the number of interfaces of the effective signal flow; and acquiring the longitudinal resolution of the screen.
One path of signal is set to be bidirectional transmission or added with one path of read-back signal on an interface of the original control card, other signals on the original interface are used as a locking signal and a clock signal, and the input code of a parallel-serial chip on the screen module is obtained through the three paths of signals, so that the parameter data of the screen module is obtained according to the code. The module is prevented from being damaged artificially in the debugging process; the engineering debugging process is simplified, and the working efficiency is improved; the technical threshold of the whole screen debugging of the LED is greatly reduced.
Although the embodiments have been described, once the basic inventive concept is obtained, other variations and modifications of these embodiments can be made by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the contents of the present specification and drawings, or any other related technical fields, which are directly or indirectly applied thereto, are included in the scope of the present invention.
Claims (4)
1. An automatic identification method for LED screen parameters is characterized by comprising the following steps:
setting a read-back signal, a locking signal and a clock signal by a screen control card driving interface;
acquiring codes of parallel-serial chips of the screen module by a read-back signal, a locking signal and a clock signal, wherein the parallel input of the parallel-serial chips is module codes which are externally connected with a pull-up or pull-down module, and the data signals of the parallel-serial chips of the front module and the rear module are connected in series;
acquiring parameters of the screen module according to the codes;
the parameters comprise module parameters, screen transverse resolution and screen longitudinal resolution;
the screen transverse resolution identification is obtained in a data signal series connection mode; the screen lateral resolution identification specifically comprises:
the screen control card sends a locking signal to the parallel-serial chip and continuously outputs a serial clock signal;
stopping when the read 8-bit data is judged to be all 0 or 1;
calculating the number of output clock signals to obtain the number of serial-parallel serial chips;
and obtaining the transverse resolution of the screen according to the number of the chips and the module parameters.
2. The method for automatically identifying parameters of an LED screen according to claim 1, wherein the screen longitudinal resolution identification specifically comprises:
the screen control card obtains the number of the longitudinal modules by judging the number of the effective readback signals;
and acquiring the longitudinal resolution of the screen.
3. An automatic LED screen parameter identification device is characterized by comprising:
the signal input module is used for setting a read-back signal, a locking signal and a clock signal by the screen control card driving interface;
the code acquisition module is used for acquiring the codes of the parallel-serial chips of the screen module through the read-back signal, the locking signal and the clock signal, the parallel input of the parallel-serial chips is the module codes and is externally connected with a pull-up or pull-down module, and the data signals of the parallel-serial chips of the front module and the parallel-serial chips of the rear module are connected in series;
the parameter acquisition module is used for acquiring parameters of the screen module according to the codes received by the multi-path driving interface;
the parameters comprise module parameters, screen transverse resolution and screen longitudinal resolution;
the system also comprises a screen transverse resolution identification module, wherein the screen transverse resolution identification module is used for acquiring the screen transverse resolution in a data signal series connection mode;
the screen transverse resolution identification module specifically comprises: the screen control card is used for sending a locking signal to the parallel-to-serial chip and continuously outputting a serial clock signal; stopping when the read 8-bit data is judged to be all 0 or 1; calculating the number of output clock signals to obtain the number of serial-parallel serial chips; and acquiring the transverse resolution of the screen.
4. The automatic LED screen parameter identification device according to claim 3, further comprising a screen longitudinal resolution acquisition module, wherein the screen longitudinal resolution acquisition module is used for the screen control card to judge the number of the effective readback signals so as to acquire the number of the longitudinal modules; and acquiring the longitudinal resolution of the screen.
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| CN109584783B (en) * | 2018-10-31 | 2020-07-17 | 北京凯视达科技有限公司 | Cell board parameter configuration method, device, medium and display screen control system |
| CN110599949B (en) * | 2019-09-20 | 2021-11-26 | 深圳市洲明科技股份有限公司 | LED box body and system card and display module thereof |
| CN110827749A (en) * | 2019-12-12 | 2020-02-21 | 苏州飞控软件科技有限公司 | Data read-back control system of LED display screen |
| CN111028719B (en) * | 2019-12-30 | 2021-11-09 | 深圳市洲明科技股份有限公司 | Lamp panel connecting plate and LED display screen |
| CN111128070A (en) * | 2020-01-16 | 2020-05-08 | 上海仰邦科技股份有限公司 | Method and system for obtaining resolution of LED dot matrix display screen |
| CN112802427B (en) * | 2021-04-14 | 2021-08-03 | 杭州视芯科技有限公司 | LED drive circuit, LED display system and display control method |
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| CN101339740A (en) * | 2008-08-05 | 2009-01-07 | 西安青松科技股份有限公司 | Intelligent big screen LED control system of high stability |
| CN201298842Y (en) * | 2008-11-24 | 2009-08-26 | 上海华勤通讯技术有限公司 | Cellphone capable of realizing plug-and-play of LCD screen |
| CN102081361B (en) * | 2010-11-29 | 2012-08-29 | 广东威创视讯科技股份有限公司 | Hardware equipment control method and system |
| CN103503459A (en) * | 2011-04-28 | 2014-01-08 | 索尼公司 | Image processing apparatus and image processing method |
| CN102411900B (en) * | 2011-12-12 | 2013-10-16 | 深圳市奥拓电子股份有限公司 | LED (Light-Emitting Diode) display screen and automatic parameter configuration method thereof |
| CN103857106B (en) * | 2012-11-29 | 2016-05-18 | 利亚德光电股份有限公司 | Led drive circuit and control system |
| CN203311817U (en) * | 2013-07-08 | 2013-11-27 | 北京泽视科技有限公司 | LED splicer |
| CN103500553B (en) * | 2013-09-26 | 2015-07-15 | 西安诺瓦电子科技有限公司 | LED (Light Emitting Diode) display screen system |
| CN203912272U (en) * | 2014-06-06 | 2014-10-29 | 珠海雷特电子科技有限公司 | Multifunctional LED lamplight control system |
| CN105373358A (en) * | 2014-08-29 | 2016-03-02 | 中兴通讯股份有限公司 | Screen resolution adjustment method and mobile terminal |
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Address after: 350007 five floor, eighty-eighth floor, 7 Jinzhou North Road, Jianxin Town, Cangshan District, Fuzhou, Fujian. Patentee after: Fuzhou Mingwei Information Technology Co.,Ltd. Address before: 350007 five floor, eighty-eighth floor, 7 Jinzhou North Road, Jianxin Town, Cangshan District, Fuzhou, Fujian. Patentee before: FUZHOU HAITIAN MICROELECTRONICS TECHNOLOGY CO.,LTD. |