CN105047135A - Lamp panel module group, box body, and LED display screen system - Google Patents
Lamp panel module group, box body, and LED display screen system Download PDFInfo
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- CN105047135A CN105047135A CN201510515319.2A CN201510515319A CN105047135A CN 105047135 A CN105047135 A CN 105047135A CN 201510515319 A CN201510515319 A CN 201510515319A CN 105047135 A CN105047135 A CN 105047135A
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- lamp plate
- plate module
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- led drive
- drive chip
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Abstract
The invention relates to a lamp panel module group, a box body employing the same, and an LED display screen system. The lamp panel module group comprises an LED drive chip, a plurality of LED lamp points which are electrically connected with the LED drive chip, a nonvolatile storage, and a sensor. The lamp panel module group also comprises an intelligent device, and the intelligent device is electrically connected with the LED drive chip, the nonvolatile storage and the sensor and is provided with a serial communication interface. The intelligent device is used for receiving an image data package through the serial communication interface, then analyzing the image data package, generating a control signal for controlling the time sequence of the LED drive chip so as to drive and control the plurality of LED lamp points for image display through the LED drive chip. Therefore, a connection line between a receiving card and the lamp panel module group can be simplified, the energy consumption of the receiving card is reduced, and the internal space of the box body is saved. Moreover, a system fault risk is reduced, and/or the intelligentization of the lamp panel module group is achieved.
Description
Technical field
The present invention relates to technical field of LED display, particularly a kind of lamp plate module, a kind of casing and a kind of LED display screen system.
Background technology
Existing LED display screen system typically comprises computer for controlling, sending card, receiving card (or claiming scan control plate), monitor card and LED display.Wherein, LED display is made up of a casing or is formed by multiple box body splicing, and each casing is made up of a lamp plate module again or is spliced by multiple lamp plate module, and single lamp plate module comprises one or more LED lamp panel; In addition, receiving card is configured in each casing, in actual mechanical process, usually need card extender (or claiming Hub plate) and coordinate receiving card to use, and monitor card is at the end of image data transmission, reclaims display data and returns to receiving card.The function of LED display screen system comprises three aspects: a) view data is sent to receiving card from sending card, and shows in LED display; B) by the display state retaking of a year or grade of LED point to receiving card, the duty of lamp plate module is judged, also i.e. spot check; C) receiving card will be read and write the storer on lamp plate module, and realization correction, humiture, voltage are monitored in real time.
In the existing LED display screen system course of work, computer for controlling sends the view data of various form to sending card as video source by video interface, and view data is sent to receiving card by netting twine or other media by sending card.After receiving card receives view data, the view data corresponding to current location is obtained according to its positional information be configured, and according to the classification of different LED driving chip on lamp plate module and the difference of cabling mode, the view data received is reversed accordingly and exported, reach the object of correct display.In procedure for displaying, receiving card also serves as the sequential control work of LED drive chip; If with a checking functions, receiving card also can the data of retaking of a year or grade monitor card whether normal to analyze lamp plate module displays; With its simultaneously, receiving card also can detect self the information such as temperature, voltage, humidity; Can be read and write storer by lamp plate module IO interface in addition, to realize the management of every lamp plate module such as correction coefficient, production information information.
Usually, the signal that will transmit between receiving card and lamp plate module comprises organizes RGB data more, additional clock signal clk, latch signal LAT, enable signal OE, row address signal A, B, the control signals such as C, this just needs between receiving card and lamp plate module, to configure winding displacement as data transmission line and LED drive chip control line; When RGB data signal group number increases, winding displacement quantity is also doubled and redoubled thereupon, and the unreliability so not only making data transmit increases, and winding displacement connected mode also seems that redundancy is complicated when multiple lamp plate module.For multiple lamp plate module composition and with the single casing of a checking functions, the driving framework that it adopts as shown in Figure 1.
Therefore, in existing LED display screen system framework, there are following problems:
(1) each single-ended signal needs to take single line core, cause the core quantity of winding displacement more, lamp plate module is swept for a routine 8, if desired two groups of RGB data, add CLK, LAT, OE, A, the control signals such as B, C one have 12 single-ended signals, add at least one earth signal, then at least need the winding displacement of 13 cores; But, often there is the core limited amount system that some interface applications enters winding displacement in LED display industry;
(2) receiving card asks the storer on lamp plate module by SPI interface or the receiving of I2C interface direct, (SPI interface needs 4 signal wires to there is the more problem of signal wire with SPI interface, two addressing lines also will be increased) as needed the cascade of lamp plate module, use that I2C interface signal line can less slightly (I2C interface needs 2 signal wires, also two addressing lines additionally will be increased as needed the cascade of lamp plate module), but the traffic rate of I2C interface lower (being generally 400kbps);
(3) detecting (being also spot check) to realize dead lamp, needing usage monitoring card to be selected to be back to receiving card by the display Data Collection of end lamp plate module, so its large and cost increase that takes up room, too increases a lot of winding displacement;
(4) because winding displacement core is more, the contact point of the connector between winding displacement and lamp plate module is also more, and the obstructed or loose contact of single core will cause display abnormal; When the probability that every root wire rod breaks down is constant, the wire rod of One's name is legion makes the unreliability of whole system greatly improve, and there is larger failure risk; And
(5) traditional lamp plate module does not have intelligent device, must come when test lamp template die group self performance by means of receiving card, cause detect and misarrangement very inconvenient.
Summary of the invention
Therefore, for deficiency of the prior art, the present invention proposes a kind of lamp plate module, a kind of casing and a kind of LED display screen system.
Particularly, a kind of lamp plate module that the embodiment of the present invention proposes, comprises LED drive chip, is electrically connected multiple LED points of described LED drive chip, nonvolatile memory and sensor; Comprise in addition: intelligent device, be electrically connected described LED drive chip, described nonvolatile memory and described sensor and be configured with serial communication interface, described intelligent device resolves described view data bag after being used for receiving view data bag by described serial communication interface and generation controls the control signal of the sequential of described LED drive chip to carry out image display via LED point multiple described in described LED drive chip drived control.
In one embodiment of the invention, the described intelligent device in above-mentioned lamp plate module is single-chip microcomputer.
In one embodiment of the invention, the described serial communication interface in above-mentioned lamp plate module is UART interface or LVDS serial line interface.
In one embodiment of the invention, the described control signal in above-mentioned lamp plate module comprises clock signal, latch signal, enable signal and row address signal.
In addition, a kind of casing that the embodiment of the present invention proposes, comprise lamp plate module and be configured with receiving card, described lamp plate module is electrically connected described receiving card, and described lamp plate module comprises multiple LED points of LED drive chip and the described LED drive chip of electrical connection.Moreover, described lamp plate module is formed with the programming device of described receiving card by serial communication signal line and is electrically connected, and described lamp plate module also comprises: intelligent device, be electrically connected described LED drive chip and be configured with serial communication interface, described intelligent device is used for after described receiving card reception view data bag, resolving described view data bag by described serial communication interface and described serial communication signal line and also produces the control signal of the sequential controlling described LED drive chip to carry out image display via LED point multiple described in described LED drive chip drived control.
In one embodiment of the invention, the described intelligent device in above-mentioned casing is single-chip microcomputer.
In one embodiment of the invention, the described serial communication interface in above-mentioned casing is UART interface or LVDS serial line interface.
In one embodiment of the invention, spot check data also for when described LED drive chip carries out spot check, are uploaded to the described programming device of described receiving card by the described intelligent device in above-mentioned casing by described serial communication interface and described serial communication signal line.
In one embodiment of the invention, described lamp plate module in above-mentioned casing also comprises the nonvolatile memory and sensor that are electrically connected to described intelligent device respectively, and described intelligent device is also for reading the described programming device being uploaded to described receiving card in the data of shown nonvolatile memory and the monitor data of sensor by described serial communication interface and described serial communication signal line.
In addition, a kind of LED display screen system that the embodiment of the present invention proposes, comprises computer for controlling, sending card and one or more any one casing aforementioned; Wherein, described sending card connects described computer for controlling and described casing.
As from the foregoing, the embodiment of the present invention can reach following one or more beneficial effect: (1) has served as the even work such as spot check of concrete driving, memory access, information monitoring due to the intelligent device on lamp plate module, which reduce the work realized by receiving card in prior art, then reduce the consumption of receiving card resource; (2) when carrying out spot check to lamp plate module, no longer needing to connect monitor card, the basis reduced costs also saves case intracorporeal space; (3) less connection wire, reduces the risk that system signal breaks down in wire rod transmission; And (4) lamp plate module is owing to being integrated with intelligent device, self also achieves intellectuality, can depart from receiving card and carry out self-test, reduces lamp plate module testing complex degree.
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is multiple lamp plate module composition and the driving configuration diagram of single casing with a checking functions in prior art.
Fig. 2 is the driving framework intention including the single casing of multiple lamp plate module of the embodiment of the present invention.
Fig. 3 is the module diagram of the single lamp plate module shown in Fig. 2.
Fig. 4 is the module diagram of the receiving card shown in Fig. 2.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Refer to Fig. 2, a kind of LED display screen system that the embodiment of the present invention proposes, comprise: computer for controlling 21, sending card 23, receiving card 25 and casing 27, a casing is only shown as an example in Fig. 2, but the present invention is not as limit, in LED display screen system also can according to actual displayed scale need configure multiple casing.
Hold above-mentioned, single casing 27 comprises multiple lamp plate module 270, and receiving card 25 is configured in casing 27; Each lamp plate module 270 is electrically connected to receiving card 25 respectively by serial communication signal line 29.Sending card 23 is electrically connected computer for controlling 21, it receives the vision signal from computer for controlling 21 (playing the part of the role of video source) by video interface such as DVI interface, HDMI etc., and the scope controlled according to self (or claiming band to carry scope) obtains the view data of relevant position to each the two field picture cutting obtained, send the view data of well cutting to receiving card 25 after completing cutting through output interfaces such as network interfaces; After receiving card 25 obtains the view data that sending card 23 provides, according to the difference of the different LED driving chip cabling mode on lamp plate module 270, after cutting is carried out to view data, export each lamp plate module 270 with the form of packet to by serial communication signal line 29.
Refer to Fig. 3, single lamp plate module 270 comprises single-chip microcomputer 2702, LED drive chip 2704, flash memory 2706 and sensor 2708.In the present embodiment, LED drive chip 2704 is such as PWM driving chip, single lamp plate module 270 is such as be made up of a LED lamp panel or be spliced by multiple LED lamp panel, each LED lamp panel can be provided with multiple LED point such as LED point such as red (R), green (G), blue (B), these LED points are electrically connected corresponding LED drive chip 2704; When lamp plate module 270 is made up of a LED lamp panel, then single-chip microcomputer 2702 and LED drive chip 2704 to be arranged on same circuit board and the input and output of LED drive chip 2704 are all electrically connected single-chip microcomputer 2702 to form the closed loop of signal, thus can realize a checking functions; When lamp plate module 270 is spliced by multiple LED lamp panel, then these LED lamp panel form electrical connection typically in cascaded fashion, and LED drive chip 2704 points is located in each LED lamp panel, and single-chip microcomputer 2702 then can be arranged in first order LED lamp panel.Moreover flash memory 2706 is electrically connected single-chip microcomputer 2702, it is for storing the correction data, inherent parameters information etc. of lamp plate module; First the information that flash memory 2706 stores be conducted interviews via PCB cabling by single-chip microcomputer 2702, and then receiving card 25 and single-chip microcomputer 2702 carry out serial communication, to realize the information system management of lamp plate module; Herein, flash memory 2706 such as has SPI interface (SerialPeripheralInterface, Serial Peripheral Interface (SPI)) or I2C (Inter-IntegratedCircuit) interface.In addition, sensor 2708 is electrically connected single-chip microcomputer 2702, and it is such as the sensors such as temperature, humidity, voltage or smog or its combination.
Please again see Fig. 3, single-chip microcomputer 2702 has UART (UniversalAsynchronousReceiver/Transmitter, UART Universal Asynchronous Receiver Transmitter) module, it is electrically connected to receiving card 25 to realize data serial communications by TXD port and RXD port by two serial communication signal lines 29.
In image display, when single-chip microcomputer 2702 receives by single serial communication signal line 29 packet that receiving card 25 sends over, (because the packet sended over exists several situation after carrying out judgement to packet, it is such as field sync signal packet, view data bag, spot check command packet, monitor data read command packet, memory read/write command packet etc.) view data is reversed, image display is carried out to LED drive chip 2704 by I/O port transmission, receiving card 25 is no longer needed to control the sequential of LED drive chip 2704, but produce control signal such as clock signal clk when lamp plate module 270 shows required for LED drive chip 2704 by single-chip microcomputer 2702, latch signal LAT, enable signal OE, row address signal A, B, the control signals such as C, and according to the difference of the packet content received, carry out selectivity display, complete final image display.Because single-chip microcomputer 2702 is integrated on lamp plate module 270, so single-chip microcomputer 2702 is given, LED drive chip 2704 transmits control signal, the winding displacement that just do not need redundancy numerous and diverse in the process of view data, directly simply can complete transmission by PCB cabling.
In the monitoring of lamp plate module, single-chip microcomputer 2702 and sensor 2708 with the use of, the real time monitoring function of the information such as the temperature to lamp plate module 270, humidity, voltage, smog can be realized.If there is a checking functions, the work of spot check data withdrawal also served as by single-chip microcomputer 2702, single-chip microcomputer 2702 after receiving spot check data, Monitoring Data and receiving card 25 carry out serial communication, therefore communicate and only need to use a small amount of signal wire.
Refer to Fig. 4, receiving card 25 comprises programming device 252, network transmission module 254 and network interface 256, network interface 256 is electrically connected to programming device 252 by network transmission module 254, the quantity of network interface 256 is equal with the quantity of network transmission module 254, and network transmission module 254 such as comprises network transformer and is connected to the network PHY chip between network transformer and programming device 252.Typically, the quantity of network interface 256 is two, and for Fig. 2, a network interface 256 is connected with sending card 23, and another network interface 256 is for cascade next stage receiving card (not drawing in Fig. 2).Moreover programming device 252 is such as FPGA (FieldProgrammableGateArray, field programmable gate array) device, and it has UART module, is thus configured with TXD port and RXD port.More specifically, the TXD port of programming device 252 is connected to the RXD port of single-chip microcomputer 252 by a serial communication signal line 29, and the RXD port of programming device 252 is connected to the TXD port of single-chip microcomputer 252 by another root serial communication signal line 29, thus set up the serial communication paths between receiving card 25 and lamp plate module 270.
Compared with prior art, the present embodiment owing to the addition of single-chip microcomputer 2702 on lamp plate module 270, this single-chip microcomputer 2702 had both been served as and had been received the data downstream work that view data drives lamp plate module 270, has served as again the flash memory 2706 read on lamp plate module, ADC monitor message or even spot check Data Concurrent send the up work of data stream of receiving card 25 back in real time; Like this, the function of receiving card 25 there has also been certain difference relative to receiving card of the prior art.Receiving card 25 in the present embodiment no longer serves as the sequential control work of LED drive chip 2704, receiving card 25 no longer directly accesses the flash memory 2704 on lamp plate module 270, also the information such as temperature, humidity, voltage, smog in not direct monitoring box body, but by single-chip microcomputer 2702 dereference.Compared with prior art when function is constant, the present embodiment has given up the winding displacement connected mode before between receiving card and lamp plate module completely, only can need the downgoing signal line of a view data and the upward signal line of a flash memory and monitor data or even spot check data between receiving card 25 and lamp plate module 270.Two signal wires can complete function identical in prior art, and put checking functions and do not need to connect monitor card again, while reducing costs, also save the space in casing.In addition, the present embodiment can save more receiving card resource, can realize more function, and in this enforcement formula, timing control signal due to LED drive chip 2704 is produced by single-chip microcomputer 2702 completely, so under the prerequisite not relying on receiving card 25, can realize self-test.In addition, the present embodiment in the display of the simple timing requirements of the static outdoor-screen etc. of PWM driving chip, best results.
In other embodiments, aforesaid single-chip microcomputer 2702 can replace to other intelligent devices, such as CPLD (ComplexProgrammableLogicDevice, CPLD) or FPGA (FieldProgrammableGateArray, field programmable gate array) etc., just taking cost into account, single-chip microcomputer is better selection; In addition, this intelligent device is typically all configured with UART interface, can certainly configure other serial communication interfaces such as LVDS interface, just needs extra increase signal conversion chip; The flash memory 2706 of previous embodiment also can replace to other nonvolatile memories.
In sum, the embodiment of the present invention can reach following one or more beneficial effect:
(1) because the intelligent device on lamp plate module has served as the even work such as spot check of concrete driving, memory access, information monitoring, which reduce the work realized by receiving card in prior art, then reduce the consumption of receiving card resource;
(2) when carrying out spot check to lamp plate module, no longer needing to connect monitor card, the basis reduced costs also saves case intracorporeal space;
(3) less connection wire, reduces the risk that system signal breaks down in wire rod transmission; And
(4) lamp plate module is owing to being integrated with intelligent device, and self also achieves intellectuality, can depart from receiving card and carry out self-test, reduces lamp plate module testing complex degree.
So far, apply specific case herein and set forth the principle of lamp plate module of the present invention, casing and LED display screen system and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. a lamp plate module, comprises LED drive chip, is electrically connected multiple LED points of described LED drive chip, nonvolatile memory and sensor; It is characterized in that, described lamp plate module also comprises:
Intelligent device, be electrically connected described LED drive chip, described nonvolatile memory and described sensor and be configured with serial communication interface, described intelligent device resolves described view data bag after being used for receiving view data bag by described serial communication interface and generation controls the control signal of the sequential of described LED drive chip to carry out image display via LED point multiple described in described LED drive chip drived control.
2. lamp plate module as claimed in claim 1, it is characterized in that, described intelligent device is single-chip microcomputer.
3. lamp plate module as claimed in claim 1, it is characterized in that, described serial communication interface is UART interface or LVDS serial line interface.
4. lamp plate module as claimed in claim 1, it is characterized in that, described control signal comprises clock signal, latch signal, enable signal and row address signal.
5. a casing, comprises lamp plate module and is configured with receiving card, and described lamp plate module is electrically connected described receiving card, and described lamp plate module comprises multiple LED points of LED drive chip and the described LED drive chip of electrical connection; It is characterized in that, described lamp plate module is formed with the programming device of described receiving card by serial communication signal line and is electrically connected, and described lamp plate module also comprises:
Intelligent device, be electrically connected described LED drive chip and be configured with serial communication interface, described intelligent device is used for after described receiving card reception view data bag, resolving described view data bag by described serial communication interface and described serial communication signal line and also produces the control signal of the sequential controlling described LED drive chip to carry out image display via LED point multiple described in described LED drive chip drived control.
6. casing as claimed in claim 5, it is characterized in that, it is characterized in that, described intelligent device is single-chip microcomputer.
7. casing as claimed in claim 5, it is characterized in that, described serial communication interface is UART interface or LVDS serial line interface.
8. casing as claimed in claim 5, it is characterized in that, spot check data also for when described LED drive chip carries out spot check, are uploaded to the described programming device of described receiving card by described intelligent device by described serial communication interface and described serial communication signal line.
9. casing as claimed in claim 5, it is characterized in that, described lamp plate module also comprises the nonvolatile memory and sensor that are electrically connected to described intelligent device respectively, and described intelligent device is also for reading the described programming device being uploaded to described receiving card in the data of shown nonvolatile memory and the monitor data of sensor by described serial communication interface and described serial communication signal line.
10. a LED display screen system, comprises computer for controlling, sending card and one or more casing as described in claim 5 to 9 any one; Wherein, described sending card connects described computer for controlling and described casing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510515319.2A CN105047135A (en) | 2015-08-20 | 2015-08-20 | Lamp panel module group, box body, and LED display screen system |
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| CN201510515319.2A CN105047135A (en) | 2015-08-20 | 2015-08-20 | Lamp panel module group, box body, and LED display screen system |
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| CN106652891A (en) * | 2016-12-26 | 2017-05-10 | 西安诺瓦电子科技有限公司 | Scanning card |
| WO2019200815A1 (en) * | 2018-04-16 | 2019-10-24 | 变衣（北京）科技有限公司 | Display screen |
| CN112071219A (en) * | 2020-09-18 | 2020-12-11 | 深圳市奥拓电子股份有限公司 | Adapter plate, LED display box body and LED display screen |
| CN114026534A (en) * | 2019-08-13 | 2022-02-08 | 三星电子株式会社 | Display device and control method thereof |
| CN114512077A (en) * | 2020-10-23 | 2022-05-17 | 西安诺瓦星云科技股份有限公司 | Method, device and system for detecting driving time sequence output by receiving card |
| CN114639336A (en) * | 2020-12-15 | 2022-06-17 | 西安钛铂锶电子科技有限公司 | Display module assembly and display box |
| CN116884342A (en) * | 2023-09-06 | 2023-10-13 | 深圳市航顺芯片技术研发有限公司 | LED control module, electronic equipment and control system |
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| CN116884342A (en) * | 2023-09-06 | 2023-10-13 | 深圳市航顺芯片技术研发有限公司 | LED control module, electronic equipment and control system |
| CN116884342B (en) * | 2023-09-06 | 2023-11-24 | 深圳市航顺芯片技术研发有限公司 | LED control module, electronic equipment and control system |
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