CN111741564A

CN111741564A - LED module drive signal control device and LED box

Info

Publication number: CN111741564A
Application number: CN202010668353.4A
Authority: CN
Inventors: 王金山
Original assignee: Shenzhen Zhouming Technology Co Ltd
Current assignee: Shenzhen Zhouming Technology Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2020-10-02

Abstract

The invention discloses an LED module driving signal control device and an LED box body, comprising: the signal distribution module is used for receiving one path of signal and outputting a plurality of paths of signals; the decoding module is used for receiving the coding signal and outputting a selection signal; and the multi-path input and output switch module is respectively connected with the plurality of LED modules and is used for receiving the multi-path signals and selecting one path of signals matched with the selection signals to output to the corresponding LED module according to the selection signals. According to the embodiment of the invention, each path of signal on the signal distribution module can be respectively and freely controlled according to the driving signal and the coding signal so as to respectively control each LED module, so that the effect of branch control is achieved, and the user experience is good.

Description

LED module drive signal control device and LED box

Technical Field

The invention relates to the field of electronic information, in particular to an LED module driving signal control device and an LED box body.

Background

Generally, a complete LED box generally includes a box frame, a power supply, a receiving card, an adapter plate, and a plurality of LED modules, the box frame serves as a supporting member for the LED box for mounting and supporting the power supply, the receiving card, the adapter plate, and the LED modules, and the receiving card serves as a control unit on the LED box for controlling signal control of the plurality of LED modules on one box.

The existing receiving card can only synchronously control a plurality of LED modules carried by the receiving card. For example, when a receiving card carries 4 LED modules, and when the receiving card sends a command to blank the screen, all four LED modules can only be completely blank the screen, and control cannot be performed by using a single LED module as a unit, which results in poor user experience.

Disclosure of Invention

In view of this, the LED module driving signal control device and the LED box provided in the embodiments of the present invention can respectively and freely control each path of signal on the signal distribution module according to the driving signal and the coding signal to respectively control each LED module, so as to achieve the effect of desired shunt control, and provide good user experience.

The technical scheme adopted by the invention for solving the technical problems is as follows:

according to an aspect of the embodiments of the present invention, there is provided an LED module driving signal control apparatus, including:

the signal distribution module is used for receiving one path of signal and outputting a plurality of paths of signals;

the decoding module is used for receiving the coding signal and outputting a selection signal;

and the multi-path input and output switch module is respectively connected with the plurality of LED modules and is used for receiving the multi-path signals and selecting one path of signals matched with the selection signals to output to the corresponding LED module according to the selection signals.

In one possible design, the decoding module includes an enable signal input terminal for receiving an enable signal, so that the decoding module determines whether to enter the decoding operating state according to the received enable signal.

In one possible design, the decoding module includes a plurality of encoding signal input terminals for receiving corresponding encoding signals, and the decoding module outputs a plurality of decoding results according to a preset decoding rule.

In one possible design, the decoding module includes a plurality of selecting signal output ends, and the plurality of selecting signal output ends respectively correspond to a plurality of decoding results of a preset decoding rule and are respectively connected to the plurality of input ends of the plurality of input/output switch modules.

In one possible design, the decoding module includes a Drive driving signal input terminal for receiving the driving signal and connecting the Drive driving signal input terminal with a selection signal output terminal corresponding to the decoding result according to the decoding result.

In one possible design, the multiple input/output switch module includes multiple input terminals and multiple output terminals, each input terminal is connected to each selection signal output terminal of the decoding module in a single way, and each output terminal is connected to each LED module in a single way.

In one possible design, the multiple input/output switch module includes multiple switch circuits, each switch circuit includes an input end and an output end, the input end is connected with one of the selection signal output ends of the decoding module, and the output end is connected with one of the LED modules.

In one possible design, the apparatus further includes a switch control module, where the switch control module is configured to output a control signal to control the multiple input and output switch modules to be turned on or off.

In one possible design, the switch control module includes an input end and an output end, and the input end is used for receiving a control signal and outputting the control signal through the output end to control the on or off of the multiple input and output switch module.

According to another aspect of the embodiments of the present invention, there is provided an LED box, including: the LED module driving device comprises a receiving card, an LED module driving signal control device and a plurality of LED modules; wherein:

the receiving card is used for outputting a path of signal and a coding signal to the LED module driving signal control device;

the LED module driving signal control device is respectively connected with the plurality of LED modules and is used for receiving the signals output by the receiving card, outputting a plurality of paths of signals and selecting one path of signals to output to the corresponding LED module.

Compared with the prior art, the LED module driving signal control device and the LED box provided by the embodiment of the invention comprise: the signal distribution module is used for receiving one path of signal and outputting a plurality of paths of signals; the decoding module is used for receiving the coding signal and outputting a selection signal; and the multi-path input and output switch module is respectively connected with the plurality of LED modules and is used for receiving the multi-path signals and selecting one path of signals matched with the selection signals to output to the corresponding LED module according to the selection signals. According to the embodiment of the invention, the decoding module is used for decoding the received coding signal according to the preset decoding rule and then outputting the selection signal to the multi-channel input and output switch module; the multi-path input and output switch module is respectively connected with the plurality of LED modules, receives the multi-path signals output by the signal distribution module, and selects one path of signals matched with the selection signals to output to the corresponding LED modules according to the selection signals output by the decoding module. Therefore, the purposes of time-sharing multiplexing and shunt control of the same signal and independent control of each path of signal on the signal distribution module can be controlled respectively and freely according to the driving signal and the coding signal, the effect of shunt control is achieved, user experience is good, the problem that the current system can only control the whole screen by taking the receiving card as a unit, single LED module independent control cannot be achieved, and user experience is poor is solved.

Drawings

Fig. 1 is a schematic structural diagram of an LED module driving signal control apparatus according to the present invention;

fig. 2 is a schematic structural diagram of a decoding module in the LED module driving signal control apparatus according to the present invention;

fig. 3 is a schematic structural diagram of a multiple input/output switch module in an LED module driving signal control apparatus according to the present invention;

fig. 4 is another schematic structural diagram of a multiple input/output switch module in the LED module driving signal control apparatus according to the present invention;

fig. 5 is a schematic structural diagram of a switch control module in the LED module driving signal control apparatus according to the present invention;

FIG. 6 is a schematic structural diagram of an LED box according to the present invention;

fig. 7 is a schematic structural diagram of an LED module driving signal control device according to the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In one embodiment, as shown in fig. 1, the present invention provides an LED module driving signal control apparatus 100, including: the device comprises a signal distribution module 10, a decoding module 20 and a multi-path input and output switch module 30; wherein:

the signal distribution module 10 is configured to receive a single signal and output multiple signals to the multiple input/output switch module 30.

The decoding module 20 is configured to output a selection signal to the multiple input/output switch module 30 after decoding the received encoded signal according to a preset decoding rule.

The multiple input/output switch module 30 is respectively connected to the multiple LED modules, and is configured to receive multiple signals output by the signal distribution module 10, and select a path of signal matched with the selection signal according to the selection signal output by the decoding module 20, and output the selected path of signal to the corresponding LED module.

In this embodiment, the decoding module decodes the received encoded signal according to a preset decoding rule and outputs a selection signal to the multiple input/output switch module; the multi-path input and output switch module is respectively connected with the plurality of LED modules, receives the multi-path signals output by the signal distribution module, and selects one path of signals matched with the selection signals to output to the corresponding LED modules according to the selection signals output by the decoding module. Therefore, the purposes of time-sharing multiplexing and shunt control of the same signal and independent control of each path of signal on the signal distribution module can be controlled respectively and freely according to the driving signal and the coding signal, the effect of shunt control is achieved, user experience is good, the problem that the current system can only control the whole screen by taking the receiving card as a unit, single LED module independent control cannot be achieved, and user experience is poor is solved.

In one embodiment, the Signal distribution module 10 is configured to receive a Signal (Signal) and output multiple signals to the multiple input/output switch module 30.

Further, the signal distribution module 10 receives a signal from the signal output by the receiving card.

Preferably, the signal comprises a clock signal.

Preferably, the signal distribution module is a patch panel.

In one embodiment, as shown in fig. 2, the decoding module 20 is configured to output a selection signal to the multiple input/output switch module 30 after decoding the received encoded signal according to a preset decoding rule, and output terminals of other non-selected selection signals are disconnected.

The decoding module 20 comprises an Enable signal input 21 for receiving an Enable (Enable) signal. The decoding module 20 determines whether to enter a decoding working state according to the received enable signal, and when the decoding module 20 receives the enable signal, the decoding module 20 performs a decoding working state; when the decoding module 20 does not receive the enable signal, the decoding module 20 is in a working state of stopping decoding, and does not perform decoding work.

The decoding module 20 comprises a number of coded signal inputs 22 for receiving corresponding Coded (CODE) signals. The decoding module 20 outputs various decoding results according to the predetermined decoding rule of the encoded signal.

The decoding module 20 includes a plurality of channel selection signal output terminals 23, and the plurality of channel selection signal output terminals 23 respectively correspond to a plurality of decoding results of a preset decoding rule, and are respectively connected to the plurality of channel input terminals of the plurality of channel input/output switch modules 30.

The decoding module 20 includes a driving signal input end 24 for receiving a driving (Drive) signal, and according to the decoding result, the driving signal input end 24 is connected to the selection signal output end 23 corresponding to the decoding result, and according to the driving signal, the output level of the corresponding selection signal output end 23 is controlled, so as to control the input level of the input end of the multi-channel input/output switch module 30 connected to the corresponding selection signal output end 23, so as to control the on/off of the switch corresponding to the input end.

Further, the enable signal, the coding signal and the driving signal received by the decoding module 20 are respectively from the enable signal, the coding signal and the driving signal output by the receiving card.

Preferably, the decoding module 20 is a decoding chip.

In this embodiment, when the decoding module receives the enable signal and is in a decoding working state, the decoding module outputs a corresponding decoding result according to a preset decoding rule of the received encoding signal, connects the driving signal input end with the selection signal output end corresponding to the decoding result, and controls the output level of the corresponding selection signal output end according to the driving signal. Therefore, the purposes of multiplexing the same signal in a time-sharing mode and controlling the same signal in a shunt mode according to the driving signal and the coding signal and controlling each signal on the signal distribution module respectively and freely so as to control each LED module respectively and independently are achieved, the effect of controlling the LED modules in the shunt mode is achieved, and user experience is good.

In an embodiment, as shown in fig. 3, the multiple input/output switch module 30 is respectively connected to the multiple LED modules, and is configured to receive multiple signals output by the signal distribution module 10, and select one signal matched with the selection signal according to the selection signal output by the decoding module 20, and output the selected signal to the corresponding LED module.

The multiple input/output switch module 30 includes multiple first input terminals 31, multiple first output terminals 32 and a first control terminal 34, each first input terminal 31 is connected to one of the multiple selection signal output terminals 23 of the decoding module 20, and each first output terminal 32 is connected to one of the multiple LED modules. Therefore, one first input end 31 of the multiple input/output switch module 30 is connected with one selection signal output end 23 of the decoding module 20 in a single way, and the corresponding first output end 32 is connected with one LED module.

In this embodiment, one first input end of the multi-channel input/output switch module is respectively connected with one selection signal output end of the decoding module in a single-channel manner, and the corresponding first output end is respectively connected with one LED module, so that when the decoding module receives an enable signal and is in a decoding working state, the decoding module outputs a corresponding decoding result according to a preset decoding rule according to the received encoding signal, connects the driving signal input end with the selection signal output end corresponding to the decoding result, controls the output level of the corresponding selection signal output end according to the driving signal to control the on or off of a circuit where the input end connected with the selection signal output end is located, thereby achieving the purpose of performing time division multiplexing and shunt control on the same signal according to the driving signal and the encoding signal, and freely controlling each channel of signals on the signal distribution module to achieve the purpose of individually controlling each LED module, therefore, the effect of shunt control is achieved, and user experience is good.

In an embodiment, as shown in fig. 4, the multiple input/output switch module 30 is respectively connected to the multiple LED modules, and is configured to receive multiple signals output by the signal distribution module 10, and select one signal matched with the selection signal according to the selection signal output by the decoding module 20, and output the selected signal to the corresponding LED module.

The multiple input/output switch module 30 includes multiple switch circuits 33, each switch circuit 33 includes a second input end 331, a second output end 332, and a second control end 333, the second input end 331 is connected to one of the selection signal output ends 23 of the decoding module 20, and the second output end 332 is connected to one of the LED modules. Therefore, one second input end 331 of each of the plurality of switch circuits 33 is connected to one selection signal output end 23 of the decoding module 20, and the corresponding second output end 332 is connected to one LED module.

Preferably, the switching circuit 33 includes at least one of the following circuits: the switching circuit comprises a single MOS tube or a plurality of MOS tubes, and the switching circuit comprises a single triode or a plurality of triodes. It is within the scope of the present invention for the switching circuit 33 to be a single component, a single device, a single chip, a single circuit, or a combination thereof, which can achieve the switching function.

In this embodiment, one second input end of the plurality of switch circuits of the multi-channel input/output switch module is connected to one selection signal output end of the decoding module, and the corresponding second output end is connected to one LED module, so that when the decoding module receives an enable signal and is in a decoding working state, the decoding module outputs a corresponding decoding result according to a preset decoding rule according to the received encoded signal, connects the driving signal input end with the selection signal output end corresponding to the decoding result, controls the output level of the corresponding selection signal output end according to the driving signal to control the on/off of the switch circuit connected to the selection signal output end, thereby achieving the purpose of performing time division multiplexing and shunt control on the same signal according to the driving signal and the encoded signal, and freely controlling each signal on the signal distribution module to individually control each LED module, therefore, the effect of shunt control is achieved, and user experience is good.

In one embodiment, as shown in fig. 1 and 5, the apparatus further includes a switch control module 40, where the switch control module 40 is configured to output a control signal to control the multiple input and output switch module 30 to be turned on or off.

The switch control module 40 includes a third input terminal 41 and a third output terminal 42, and the third output terminal 42 is connected to the first control terminal 34 of the mimo switch module 30 or the second control terminals 333 of the plurality of switch circuits 33 included in the mimo switch module 30. The third input terminal 41 is configured to receive a Control signal, and output a Control signal through a third output terminal 42 to Control the on/off of the multiple input/output switch module 30, or Control the on/off of the multiple switch circuits 33 included in the multiple input/output switch module 30. When the switch control module 40 does not receive the control signal, the mimo switch module 30 or all the switch circuits 33 included in the mimo switch module 30 are turned off; when the switch control module 40 receives the control signal, the circuit in which one input end of the multiple input/output switch module 30 is located or each switch circuit 33 included in the multiple input/output switch module 30 controls the output level of the corresponding selection signal output end 23 to be on or off according to the decoding result corresponding to the output of the decoding module 20 and the driving signal.

Further, the control signal received by the switch control module 40 is derived from the control signal output by the receiving card.

Preferably, the switch control module 40 includes at least one of: the switching circuit comprises a single MOS tube or a plurality of MOS tubes, and the switching circuit comprises a single triode or a plurality of triodes. In the art, any single element, single device, single chip or single circuit, or their combination, etc. that can achieve the switching function is within the scope of the switching control module 40 of the present invention.

In this embodiment, the switch control module outputs a control signal to control the on/off of the multiple input/output switch modules, and when the switch control module does not receive the control signal, the multiple input/output switch modules are turned off, so that the signal distribution module outputs multiple clock signals to be directly connected to the multiple LED modules, which is the same as a conventional manner, thereby ensuring the normal basic display function of the LED screen. When the switch control module receives a control signal, the circuit where one input end of the multi-path input/output switch module is located or each switch circuit included by the multi-path input/output switch module controls the output level of the corresponding selection signal output end to be switched on or switched off according to the decoding result corresponding to the output of the decoding module and the driving signal, so that the purposes of time-sharing multiplexing and shunt control on the same signal can be achieved according to the driving signal and the coding signal, the purpose of respectively and independently controlling each LED module can be achieved by respectively and freely controlling each signal on the signal distribution module, the shunt control effect is achieved, and the user experience is good.

In one embodiment, as shown in fig. 6, the present invention provides an LED box comprising: a receiving card 200, an LED module driving signal control device 100, and a plurality of LED modules 300; wherein:

the receiving card 200 is configured to output a signal and a coding signal to the LED module driving signal control device 100;

the LED module driving signal control device 100 is respectively connected to the plurality of LED modules 300, and is configured to receive the signal output by the receiving card, output multiple signals, and select one signal to output to the corresponding LED module 300.

In this embodiment, through the LED module driving signal control device is connected with a plurality of LED modules respectively, receives the signal output by the receiving card and outputs multiple signals, and selects one path of signal to output to the corresponding LED module, thereby achieving the purpose of performing time division multiplexing and shunt control on the same signal according to the driving signal and the coding signal, and freely controlling each path of signal on the signal distribution module respectively to achieve the purpose of individually controlling each LED module respectively, thereby achieving the effect of shunt control, and providing good user experience.

In one embodiment, as shown in fig. 1, the LED module driving signal control apparatus 100 includes: the device comprises a signal distribution module 10, a decoding module 20 and a multi-path input and output switch module 30; wherein:

the signal distribution module 10 is configured to receive a single signal output by the receiving card 100, and output multiple signals to the multiple input/output switch module 30.

The decoding module 20 is configured to, according to the received encoded signal output by the receiving card 100, output a selection signal to the multiple input/output switch module 30 after decoding according to a preset decoding rule.

The multiple input/output switch module 30 is respectively connected to the multiple LED modules 300, and is configured to receive multiple signals output by the signal distribution module 10, and select a path of signal matched with the selection signal according to the selection signal output by the decoding module 20, and output the selected path of signal to the corresponding LED module 300.

In this embodiment, the decoding module decodes the received encoded signal according to a preset decoding rule and outputs a selection signal to the multiple input/output switch module; the multi-path input and output switch module is respectively connected with the plurality of LED modules, receives the multi-path signals output by the signal distribution module, and selects one path of signals matched with the selection signals to output to the corresponding LED modules according to the selection signals output by the decoding module. Therefore, the purposes of multiplexing the same signal in a time-sharing mode and controlling the same signal in a shunt mode according to the driving signal and the coding signal and controlling each signal on the signal distribution module respectively and freely so as to control each LED module respectively and independently are achieved, the effect of controlling the LED modules in the shunt mode is achieved, and user experience is good.

In one embodiment, the Signal distribution module 10 is configured to output a plurality of signals to the multiple input/output switch module 30 by using one Signal (Signal) output by the receiving card 100.

Preferably, the signal comprises a clock signal.

Preferably, the signal distribution module is a patch panel.

In one embodiment, as shown in fig. 2, the decoding module 20 is configured to, according to a received coded signal (CODE) output by the receiving card 100, decode the coded signal according to a preset decoding rule and output a selection signal to the mimo switch module 30, while other unselected selection signal output terminals are turned off.

The decoding module 20 includes an Enable signal input terminal 21 for receiving an output Enable (Enable) signal of the receiving card 100. The decoding module 20 determines whether to enter a decoding working state according to the received enable signal, and when the decoding module 20 receives the enable signal, the decoding module 20 performs a decoding working state; when the decoding module 20 does not receive the enable signal, the decoding module 20 is in a working state of stopping decoding, and does not perform decoding work.

The decoding module 20 includes a plurality of coded signal inputs 22 for receiving corresponding Coded (CODE) signals output by the receiving card 100. The decoding module 20 outputs various decoding results according to the predetermined decoding rule of the encoded signal.

The decoding module 20 includes a driving signal input end 24, configured to receive a driving (Drive) signal output by the receiving card 100, and according to a decoding result, connect the driving signal input end 24 to a selection signal output end 23 corresponding to the decoding result, and control an output level of the corresponding selection signal output end 23 according to the driving signal, so as to control an input level of an input end of the multiple input/output switch module 30 connected to the corresponding selection signal output end 23, so as to control on/off of a switch corresponding to the input end.

Preferably, the decoding module 20 is a decoding chip.

The switch control module 40 includes a third input terminal 41 and a third output terminal 42, and the third output terminal 42 is connected to the first control terminal 34 of the mimo switch module 30 or the second control terminals 333 of the plurality of switch circuits 33 included in the mimo switch module 30. The third input terminal 41 is configured to receive a Control signal output by the receiving card, and output a Control signal through a third output terminal 42 to Control the on/off of the multiple input/output switch module 30, or Control the on/off of the multiple switch circuits 33 included in the multiple input/output switch module 30. When the switch control module 40 does not receive the control signal, the mimo switch module 30 or all the switch circuits 33 included in the mimo switch module 30 are turned off; when the switch control module 40 receives the control signal, the circuit in which one input end of the multiple input/output switch module 30 is located or each switch circuit 33 included in the multiple input/output switch module 30 controls the output level of the corresponding selection signal output end 23 to be on or off according to the decoding result corresponding to the output of the decoding module 20 and the driving signal.

The technical solution of the present invention is further described in detail with reference to specific examples.

In one embodiment, as shown in fig. 7, the present invention provides an LED module driving signal control device, and in this embodiment, four LED modules are taken as an example for description. The Signal (Signal) is described by taking the clock Signal CLK as an example. The receiving card outputs a clock signal PHY _ CLK, encoding signals CODE1 and CODE2, a driving signal Drive, an Enable signal Enable, and a Control signal Control.

An LED module driving signal control device 100 comprises: the device comprises a signal distribution module 10, a decoding module 20, a multi-channel input and output switch module 30 and a switch control module 40.

The signal distribution module 10 is configured to receive a clock signal CLK from the output of the receiving card, and output four signals of CLK1, CLK2, CLK3, and CLK4 to the multiple input and output switch module 30.

The decoding module 20 is a decoding chip, and is configured to output a selection signal to the multiple input/output switch module 30 after decoding the received encoded signal according to a preset decoding rule.

The decoding module 20 includes an Enable input terminal as an Enable signal input terminal 21 for receiving an Enable (Enable) signal from the receiving card. The decoding module 20 determines whether to enter a decoding working state according to the received enable signal, and when the decoding module 20 receives the enable signal, the decoding module 20 performs a decoding working state; when the decoding module 20 does not receive the enable signal, the decoding module 20 is in a working state of stopping decoding, and does not perform decoding work.

The decoding module 20 includes two inputs of CODE1 and CODE2 as encoded signal inputs 22 for receiving corresponding encoded (CODE) signals from a receiving card. The decoding module 20 outputs various decoding results according to the predetermined decoding rule of the encoded signal.

The decoding module 20 includes four selecting signal output terminals, Y0, Y1, Y2 and Y3, as the multiple selecting signal output terminal 23, respectively corresponding to multiple decoding results of a preset decoding rule, and respectively connected to multiple input terminals of the multiple input/output switch module 30.

The decoding module 20 includes a Drive input terminal as a driving signal input terminal 24, and is configured to receive a driving (Drive) signal from a receiving card, and according to a decoding result, connect one of four selection signal output terminals, namely Y0, Y1, Y2, and Y3, corresponding to the driving input terminal and the decoding result, and control an output level of the corresponding selection signal output terminal according to the driving signal, so as to control an input level of an input terminal of the multiple input/output switch module 30 connected to the corresponding selection signal output terminal, so as to control on or off of a switch corresponding to the input terminal.

The decoding module Enable signal is Enable, the coding signals are CODE1 and CODE2, and the preset decoding rule is as follows:

in the above table, 0 represents a low level, and 1 represents a high level.

After receiving the Enable signal Enable, the decoding module enables a Drive channel to be connected with a selection signal output end matched with the encoding signal after decoding according to the received encoding signals CODE1 and CODE2, and other selection signal output ends are disconnected to output a selection signal to the multi-path input and output switch module. For example, after receiving the Enable signal Enable, when the received CODE signals CODE1 and CODE2 are low level (0), respectively, according to the preset decoding rule, the selection signal output terminal that is low-matched with CODE1 and CODE2 is Y0, then after decoding, the Drive channel is connected with the selection signal output terminal Y0, the other selection signal output terminals Y1, Y2, and Y3 are disconnected, and the selection signal of the selection signal output terminal Y0 is output to the multiple input and output switch module.

The multiple input/output switch module 30 is respectively connected to the multiple LED modules, and is configured to receive multiple signals output by the signal distribution module 10, and select a path of signal matched with the selection signal according to the selection signal output by the decoding module 20, and output the selected path of signal to the corresponding LED module. The multiple input and output switch module 30 includes four switch circuits 33, each switch circuit 33 is composed of MOS transistors, wherein a source 1 of the MOS transistor is used as the second input terminal 331 and the second control terminal 333, and a drain 2 of the MOS transistor is used as the second output terminal 332.

The source 1 of the MOS transistor Q1 is connected to the selection signal output terminal Y0 of the decoding module, the drain 2 is connected to a clock signal CLK1 of the signal distribution module 10, the drain 2 serves as a second output terminal to output a clock signal OUT _ CLK1 to the corresponding first LED module, and the gate 3 is grounded through a resistor R2.

The source 1 of the MOS transistor Q2 is connected to the selection signal output terminal Y1 of the decoding module, the drain 2 is connected to a clock signal CLK2 of the signal distribution module 10, the drain 2 serves as a second output terminal to output a clock signal OUT _ CLK2 to the corresponding second LED module, and the gate 3 is grounded through a resistor R3.

The source 1 of the MOS transistor Q3 is connected to the selection signal output terminal Y2 of the decoding module, the drain 2 is connected to a clock signal CLK3 of the signal distribution module 10, the drain 2 serves as a second output terminal to output a clock signal OUT _ CLK3 to a corresponding third LED module, and the gate 3 is grounded through a resistor R4.

The source 1 of the MOS transistor Q4 is connected to the selection signal output terminal Y3 of the decoding module, the drain 2 is connected to a clock signal CLK4 of the signal distribution module 10, the drain 2 serves as a second output terminal to output a clock signal OUT _ CLK4 to the corresponding fourth LED module, and the gate 3 is grounded through a resistor R5.

After the above connection, one path of the second input end 331 of the four-path switch circuit 33 can be respectively connected with one path of the selection signal output end 23 of the decoding module 20, and the corresponding one path of the second output end 332 is respectively connected with one LED module.

The switch control module 40 is configured to output a control signal to control the on/off of the multiple input/output switch module 30. The switch Control module 40 is composed of a MOS transistor Q9, and a source 1 of the MOS transistor Q9 is connected to the Control signal terminal of the receiving card as a third input terminal 41, and is configured to receive a Control (Control) signal of the receiving card; the drain 2 of MOS transistor Q9 is connected to the power VCC, the gate 3 of MOS transistor Q9 is connected to the source 1 of MOS transistor Q1, the source 1 of MOS transistor Q2, the source 1 of MOS transistor Q3, and the source 1 of MOS transistor Q4 as the third output end 42, respectively, and receives the Control (Control) signal of the card through the source 1, and outputs a Control signal at the gate 3 to Control the on/off of MOS transistor Q1, MOS transistor Q2, MOS transistor Q3, and MOS transistor Q4.

In this embodiment, the LED module driving signal control apparatus 100, when operating specifically, comprises:

when the Control signal is at a low level and the Enable is at a high level, the MOS tube Q9 is turned off, the selection signal output end Y0-Y3 is turned off, and the CLK1-CLK4 are directly connected with the OUT _ CLK1-OUT _ CLK 4.

When the Control signal is high level and the Enable is high level, the MOS tube Q9 is switched on, the selection signal output end Y0-Y3 is switched off, at the moment, the MOS tube Q1-Q4 is switched on, and the CLK1-CLK4 is connected to the ground through the MOS tube Q1-Q4 through the resistors R2-R5. The resistors R2-R5 are small resistors, so as to prevent potential hazards caused by overheating of the signal distribution module 10(U1) due to direct connection of CLK1-CLK4 to ground. At this time, although the CLK1-CLK4 are connected to the OUT _ CLK1-OUT _ CLK4, the driving capability of the OUT _ CLK1-OUT _ CLK4 is insufficient due to the grounding of the small-resistance resistors R2-R5, so that the signal distribution module U1 is disconnected from the four LED modules.

When the Control signal is at high level, Enable is at low level, and Drive is at low level, and when CODE1 and CODE2 are at low level, MOS transistor Q9 is turned on. According to the preset decoding rule, at this time, the Drive channel is connected with the selection signal output end Y0, and the selection signal output ends Y1, Y2 and Y3 are closed. At this time, although the MOS transistor Q1 is pulled up and turned on, since the selection signal output terminal Y0 is directly connected thereto, the driving capability is far beyond the pull-up capability, that is, the source 1 of the MOS transistor Q1 is forced to be lowered, so that the MOS transistor Q1 is in the off state. At this time, the CLK1 is connected to the OUT _ CLK1, the first LED module is normal, and the MOS transistor Q2, the MOS transistor Q3, and the MOS transistor Q4 are in an on state due to the pull-up action of the Control signal, so that the second LED module, the third LED module, and the fourth LED module connected to the MOS transistor Q2, the MOS transistor Q3, and the MOS transistor Q4 are still turned off. Therefore, the purpose of respectively and independently controlling each LED module can be achieved by carrying out time-sharing multiplexing and shunt control on the same signal and respectively and freely controlling each signal on the signal distribution module, and the effect of shunt control is achieved.

When the Control signal is at high level, Enable is at low level, and Drive is at low level, CODE1 is at low level, and CODE2 is at high level, MOS transistor Q9 is turned on. According to the preset decoding rule, at this time, the Drive channel is connected with the selection signal output end Y1, and the selection signal output ends Y0, Y2 and Y3 are closed. At this time, although the MOS transistor Q2 is pulled up and turned on, since the selection signal output terminal Y1 is directly connected thereto, the driving capability is far beyond the pull-up capability, that is, the source 1 of the MOS transistor Q2 is forced to be lowered, so that the MOS transistor Q2 is in the off state. At this time, the CLK2 is connected to the OUT _ CLK2, the second LED module is normal, and the MOS transistor Q1, the MOS transistor Q3, and the MOS transistor Q4 are in an on state due to the pull-up action of the Control signal, so that the first LED module, the third LED module, and the fourth LED module connected to the MOS transistor Q1, the MOS transistor Q3, and the MOS transistor Q4 are still turned off. Therefore, the purpose of respectively and independently controlling each LED module can be achieved by carrying out time-sharing multiplexing and shunt control on the same signal and respectively and freely controlling each signal on the signal distribution module, and the effect of shunt control is achieved.

When the Control signal is at high level, Enable is at low level, and Drive is at low level, CODE1 is at high level, and CODE2 is at low level, MOS transistor Q9 is turned on. According to the preset decoding rule, at this time, the Drive channel is connected with the selection signal output end Y2, and the selection signal output ends Y0, Y1 and Y3 are closed. At this time, although the MOS transistor Q3 is pulled up and turned on, since the selection signal output terminal Y2 is directly connected thereto, the driving capability is far beyond the pull-up capability, that is, the source 1 of the MOS transistor Q3 is forced to be lowered, so that the MOS transistor Q3 is in the off state. At this time, the CLK3 is connected to the OUT _ CLK3, the third LED module is normal, and the MOS transistor Q1, the MOS transistor Q2, and the MOS transistor Q4 are in an on state due to the pull-up action of the Control signal, so that the first LED module, the second LED module, and the fourth LED module connected to the MOS transistor Q1, the MOS transistor Q2, and the MOS transistor Q4 are still turned off. Therefore, the purpose of respectively and independently controlling each LED module can be achieved by carrying out time-sharing multiplexing and shunt control on the same signal and respectively and freely controlling each signal on the signal distribution module, and the effect of shunt control is achieved.

When the Control signal is at high level, Enable is at low level, and Drive is at low level, and when CODE1 and CODE2 are at high level, MOS transistor Q9 is turned on. According to the preset decoding rule, at this time, the Drive channel is connected with the selection signal output end Y3, and the selection signal output ends Y0, Y1 and Y2 are closed. At this time, although the MOS transistor Q4 is pulled up and turned on, since the selection signal output terminal Y3 is directly connected thereto, the driving capability is far beyond the pull-up capability, that is, the source 1 of the MOS transistor Q4 is forced to be lowered, so that the MOS transistor Q4 is in the off state. At this time, the CLK4 is connected to the OUT _ CLK4, the fourth LED module is normal, and the MOS transistor Q1, the MOS transistor Q2, and the MOS transistor Q3 are in an on state due to the pull-up action of the Control signal, so that the first LED module, the second LED module, and the third LED module connected to the MOS transistor Q1, the MOS transistor Q2, and the MOS transistor Q3 are still turned off. Therefore, the purpose of respectively and independently controlling each LED module can be achieved by carrying out time-sharing multiplexing and shunt control on the same signal and respectively and freely controlling each signal on the signal distribution module, and the effect of shunt control is achieved.

In this embodiment, through LED module drive signal controlling means is connected with a plurality of LED modules respectively, receives the card output the signal and output multichannel signal to select signal output of the same kind to give the LED module that corresponds, thereby reach according to drive signal and code signal, can reach and carry out time sharing multiplex, shunt control to same signal, can freely control each way signal in the signal distribution module respectively in order to reach the purpose of separately controlling every LED module, thereby reach the effect of shunt control, user experience is good, can solve present system can only use the card as the whole screen of unit control well, can't accomplish with single LED module separate control, cause the not good problem of user experience.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a LED module drive signal controlling means which characterized in that, LED module drive signal controlling means includes:

2. The apparatus of claim 1, wherein the decoding module comprises an enable signal input terminal for receiving an enable signal, so that the decoding module determines whether to enter the decoding operation state according to the received enable signal.

3. The apparatus according to claim 1 or 2, wherein the decoding module comprises a plurality of encoded signal input terminals for receiving corresponding encoded signals, and the decoding module outputs a plurality of decoding results according to a predetermined decoding rule.

4. The apparatus of claim 3, wherein the decoding module comprises a plurality of output ports for selecting signals, and the output ports for selecting signals respectively correspond to a plurality of decoding results of a predetermined decoding rule and are respectively connected to the plurality of input ports of the plurality of input/output switch modules.

5. The apparatus of claim 4, wherein the decoding module comprises a Drive driving signal input terminal for receiving the driving signal and connecting the Drive driving signal input terminal with a selection signal output terminal corresponding to the decoding result according to the decoding result.

6. The device of claim 4, wherein the multiple input/output switch module comprises multiple input terminals and multiple output terminals, each input terminal is connected to one of the multiple selection signal output terminals of the decoding module, and each output terminal is connected to one of the LED modules.

7. The apparatus of claim 4, wherein the multiple input/output switch module comprises a plurality of switch circuits, each switch circuit comprises an input terminal and an output terminal, the input terminal is connected to a selection signal output terminal of the decoding module, and the output terminal is connected to an LED module.

8. The apparatus of claim 1, further comprising a switch control module, wherein the switch control module is configured to output a control signal to control the multiple input/output switch module to be turned on or off.

9. The apparatus of claim 8, wherein the switch control module comprises an input terminal and an output terminal, the input terminal is configured to receive a control signal and output the control signal through the output terminal to control the on/off of the multiple input/output switch module.

10. The utility model provides a LED box, its characterized in that, LED box includes: a receiving card, an LED module driving signal control device according to any one of claims 1 to 9 and a plurality of LED modules; wherein: