CN110085163A - LED shows cascade Mach-Zehnder interferometer circuit and LED display - Google Patents
LED shows cascade Mach-Zehnder interferometer circuit and LED display Download PDFInfo
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- CN110085163A CN110085163A CN201910336958.0A CN201910336958A CN110085163A CN 110085163 A CN110085163 A CN 110085163A CN 201910336958 A CN201910336958 A CN 201910336958A CN 110085163 A CN110085163 A CN 110085163A
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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 present invention relates to a kind of LED to show cascade Mach-Zehnder interferometer circuit and LED display, LED shows cascade Mach-Zehnder interferometer circuit, pass through the first signal selection module and second signal selecting module, the first control signal and second control signal issued according to control module, to realize that the first signal selection module obtains luminous signal from upper level connection circuit, second signal selecting module is sent to by LED drive module, next cascade circuit is sent to by second signal selecting module, or second signal selecting module obtains luminous signal from upper level connection circuit, the first signal selection module is sent to by LED drive module, next cascade circuit is sent to by the first signal selection module, so that the reception of luminous signal and the transmission of luminous signal all can be achieved in the first signal selection module and second signal selecting module, when installation Without selecting input direction and outbound course, so that expansion cascading is more convenient, is conducive to increase the compatibility between product, reduces production cost.
Description
Technical field
The present invention relates to technical field of LED display, show cascade Mach-Zehnder interferometer circuit and LED display more particularly to LED.
Background technique
LED (Light Emitting Diode, light emitting diode) display screen is as novel display technology, with its section
Can, environmental protection, it is highlighted the advantages that be gradually acceptable to the market, to be widely used in the fields such as city medium, urban transportation.LED
Display screen is with the development of electronics technology, and the wider LED display of screen is increasingly by user's favor.In order to increase display screen
Screen width, usually the box body formwork group of LED display is cascaded, module signal input interface and output interface definition are different,
So that mould group distinguishes the input/output of left and right fixed signal, i.e., it need to fix that left interface is input terminal or output end and right interface is defeated
Enter end or output end, cannot do that data are split, so that the cable of signal cascade is too long, causes that the production cost increases, and one
The necessary mating special signal adapter of the cabinet of LED display and LED lamp panel are as display control unit, so that lamp plate type is numerous
More, the compatibility between product is low, increases manufacturing cost, after-sales service versatility is low, is unfavorable for managing, easily causes library
It deposits.
Summary of the invention
Based on this, it is necessary to aiming at the problem that traditional mould group need to fix input terminal/output end, provide a kind of LED display level
Join control circuit and LED display.
A kind of LED display cascade Mach-Zehnder interferometer circuit, comprising: the first signal selection module, second signal selecting module, control mould
Block and LED drive module；First signal selection module has the first connecting pin, the first signal output end and the first signal defeated
Entering end, the second signal selecting module has second connection end, second signal output end and a second signal input terminal, and described the
One signal output end and second signal output end are connect with the input terminal of the LED drive module respectively, and first signal is defeated
Enter end and second signal input terminal connect with the output end of the LED drive module respectively, the control module respectively with it is described
First signal selection module and the connection of second signal selecting module.
The control module is used for when sending first control signal to first signal selection module, Xiang Suoshu second
Signal selection module sends second control signal, and the control module is also used to sending the to first signal selection module
When two control signals, Xiang Suoshu second signal selecting module sends first control signal.
First signal selection module is used for when receiving the first control signal, passes through first connecting pin
The first luminous signal is received, and first luminous signal is sent to by the LED by first signal output end and is driven
The input terminal of module；The second signal selecting module is used for when receiving the second control signal, passes through described second
Signal input part receives first luminous signal from the output end of the LED drive module, is sent out by the second connection end
Send first luminous signal.
The second signal selecting module is also used to when receiving the first control signal, is connected by described second
End receives the second luminous signal, and second luminous signal is sent to the LED by the second signal output end and is driven
The input terminal of dynamic model block；First signal selection module is also used to when receiving the second control signal, by described
First signal input part receives second luminous signal from the output end of LED drive module, is sent out by first connecting pin
Send second luminous signal.
The LED drive module drives LED for receiving first luminous signal, according to first luminous signal,
It is also used to receive second luminous signal, the LED is driven according to second luminous signal.
The control module is used for by receiving the first adjustment signal in one of the embodiments, and Xiang Suoshu first believes
Number selecting module sends the first control signal, and sends the second control signal to the second signal selecting module,
The control module is also used to receive the second adjustment signal, and the first signal selection module of Xiang Suoshu sends second control signal, and
The first control signal is sent to the second signal selecting module.
The LED shows that cascade Mach-Zehnder interferometer circuit further includes signal switching card in one of the embodiments, the signal
Adapter is connect with the control module, and the control module is used to receive the adjustment signal of the signal switching card, the control
Molding block is used to generate the first control signal and the second control signal by receiving the adjustment signal.
In one of the embodiments, the control module be phase inverter, the first input end of the phase inverter with it is described
Signal switching card connection, the first output end of the phase inverter are connect with the second input terminal of the phase inverter, the phase inverter
The first output end also connect with first signal selection module, the second output terminal of the phase inverter and the second signal
Selecting module connection.
The LED shows that cascade Mach-Zehnder interferometer circuit further includes first interface module and second in one of the embodiments,
Interface module, the control module are connect with the first interface module and the second interface module respectively, and described first connects
Mouth mold block and the second interface module are connect with the signal switching card respectively.
The LED shows that cascade Mach-Zehnder interferometer circuit further includes the first decoding module and second in one of the embodiments,
Decoding module, first decoding module are connect with second decoding module, and the control module decodes mould with first respectively
Block and the connection of the second decoding module, the control module are used to send to first decoding module and second decoding module
The first control signal or the second control signal.
First decoding module is used for when receiving the first control signal, receives LED control signal, and will
The LED control signal is sent to second decoding module；Second decoding module is used to receive first control
When signal processed, the LED control signal is received from first decoding module, and send the LED control signal.
Second decoding module is also used to when receiving the second control signal, receives the light emitting control letter
Number, and the LED control signal is sent to first decoding module；First decoding module is also used to receiving
When the second control signal, the LED control signal is received from second decoding module, and send the light emitting control
Signal.
The LED shows that cascade Mach-Zehnder interferometer circuit further includes first interface module and second in one of the embodiments,
Interface module, the first interface module are connect with first decoding module, and the second interface module is translated with described second
Code module connection.
First decoding module and second decoding module drive with the LED respectively in one of the embodiments,
The connection of dynamic model block.
The LED shows that cascade Mach-Zehnder interferometer circuit further includes first interface module and second in one of the embodiments,
Interface module, the first interface module are connect with first connecting pin, and the second interface module is connect with described second
End connection.
A kind of LED display shows cascade Mach-Zehnder interferometer circuit including the LED in any of the above-described embodiment.
Above-mentioned LED shows cascade Mach-Zehnder interferometer circuit and LED display, when control module sends the to the first signal selection module
One control signal, when sending second control signal to second signal selecting module, the first signal selection module joins electricity from upper level
Luminous signal is obtained in road, is sent to second signal selecting module, and next cascade circuit is sent to by second signal selecting module,
Conversely, sending second to the first signal selection module when control module sends first control signal to second signal selecting module
When controlling signal, second signal selecting module obtains luminous signal from upper level connection circuit, is sent to the first signal behavior mould
Block is sent to next cascade circuit by the first signal selection module, so that the first signal selection module and second signal select mould
The reception of luminous signal and the transmission of luminous signal all can be achieved in block, without selecting input direction and outbound course when installation,
So that expansion cascading is more convenient, is conducive to increase the compatibility between product, reduces production cost, be conducive to after-sales service.
Detailed description of the invention
Fig. 1 is the structural block diagram that LED shows cascade Mach-Zehnder interferometer circuit in one embodiment；
Fig. 2 a is the circuit diagram of the first signal selection module in one embodiment；
Fig. 2 b is the circuit diagram of second signal selecting module in one embodiment；
Fig. 3 is the circuit diagram of LED drive module in one embodiment；
Fig. 4 is the circuit diagram of control module in one embodiment；
Fig. 5 is the circuit diagram of the first decoding module and the second decoding module in one embodiment；
Fig. 6 is the circuit diagram of first interface module and second interface module in one embodiment；
Fig. 7 is the circuit diagram of signal switching card in one embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term used herein is intended merely to the mesh of description specific embodiment
, it is not intended that in the limitation present invention.
For example, a kind of LED shows cascade Mach-Zehnder interferometer circuit, comprising: the first signal selection module, second signal selecting module,
Control module and LED drive module；First signal selection module has the first connecting pin, the first signal output end and first
Signal input part, the second signal selecting module have second connection end, second signal output end and second signal input terminal,
First signal output end and second signal output end are connect with the input terminal of the LED drive module respectively, and described first
Signal input part and second signal input terminal are connect with the output end of the LED drive module respectively, and the control module is used for
When sending first control signal to first signal selection module, Xiang Suoshu second signal selecting module sends the second control
Signal, the control module are also used to when sending second control signal to first signal selection module, Xiang Suoshu second
Signal selection module sends first control signal.
First signal selection module is used for when receiving the first control signal, passes through first connecting pin
The first luminous signal is received, and first luminous signal is sent to by the LED by first signal output end and is driven
The input terminal of module；The second signal selecting module is used for when receiving the second control signal, passes through described second
Signal input part receives first luminous signal from the output end of the LED drive module, is sent out by the second connection end
Send first luminous signal.
The second signal selecting module is also used to when receiving the first control signal, is connected by described second
End receives the second luminous signal, and second luminous signal is sent to the LED by the second signal output end and is driven
The input terminal of dynamic model block；First signal selection module is also used to when receiving the second control signal, by described
First signal input part receives second luminous signal from the output end of LED drive module, is sent out by first connecting pin
Send second luminous signal.
The LED drive module drives LED for receiving first luminous signal, according to first luminous signal,
It is also used to receive second luminous signal, the LED is driven according to two luminous signal.
Above-mentioned LED shows cascade Mach-Zehnder interferometer circuit, when control module sends first control signal to the first signal selection module,
When sending second control signal to second signal selecting module, the first signal selection module is obtained from upper level connection circuit and is shone
Signal is sent to second signal selecting module, is sent to next cascade circuit by second signal selecting module, conversely, when control
Module sends first control signal to second signal selecting module, when sending second control signal to the first signal selection module,
Second signal selecting module obtains luminous signal from upper level connection circuit, is sent to the first signal selection module, by the first letter
Number selecting module is sent to next cascade circuit, so that the first signal selection module and second signal selecting module all can be achieved
The reception of luminous signal and the transmission of luminous signal, without selecting input direction and outbound course when installation, so that expansion cascading
It is more convenient, be conducive to increase the compatibility between product, reduce production cost, is conducive to after-sales service.
In one embodiment, referring to Figure 1, Fig. 2 a and Fig. 2 b, a kind of LED is provided and shows cascade Mach-Zehnder interferometer circuit 10, packet
It includes: the first signal selection module 100, second signal selecting module 200, control module 300 and LED drive module 400；Described
One signal selection module 100 has the first connecting pin, the first signal output end and the first signal input part, the second signal choosing
Module 200 is selected with second connection end, second signal output end and second signal input terminal, first signal output end and the
Binary signal output end is connect with the input terminal of the LED drive module 300 respectively, first signal input part and second signal
Input terminal is connect with the output end of the LED drive module 300 respectively, the control module 300 respectively with first signal
Selecting module 100 and second signal selecting module 200 connect.
The control module is used for when sending first control signal to first signal selection module, Xiang Suoshu second
Signal selection module sends second control signal, and the control module is also used to sending the to first signal selection module
When two control signals, Xiang Suoshu second signal selecting module sends first control signal, that is to say, that control module is to described the
One signal selection module and the second signal selecting module send first control signal and second control signal, so that the
One in one signal selection module and second signal selecting module receives first control signal, another receives second
Control signal.
First signal selection module is used for when receiving the first control signal, passes through first connecting pin
First luminous signal is received, and first luminous signal is sent to by the LED by first signal output end
The input terminal of drive module；The second signal selecting module is used for when receiving the second control signal, by described
Second signal input terminal receives first luminous signal from the output end of the LED drive module, connects by described second
End sends first luminous signal.
The second signal selecting module is also used to when receiving the first control signal, is connected by described second
End receives second luminous signal, and described in by the second signal output end being sent to second luminous signal
The input terminal of LED drive module；First signal selection module is also used to pass through when receiving the second control signal
First signal input part receives second luminous signal from the output end of LED drive module, connects by described first
End sends second luminous signal.
It is worth mentioning, the first signal selection module and second signal selecting module are multichannel alternative electronic switch,
Then when the first signal selection module receives first control signal, the first connecting pin is connected with the first signal output end, when
When one signal selection module receives second control signal, the first connecting pin is connected with the first signal input part, likewise, when the
When binary signal selecting module receives first control signal, second connection end is connected with second signal output end, works as second signal
When selecting module receives second control signal, second connection end is connected with second signal input terminal, in one embodiment, institute
Stating first control signal is high level signal, and the second control signal is low level signal.
It should be understood that when the first signal selection module receives first control signal, the first connecting pin and the first letter
The conducting of number output end receives first luminous signal by first connecting pin, and passes through first signal output end
First luminous signal is sent to the input terminal of the LED drive module, the output end that LED drive module passes through is by first
Luminous signal is sent to second signal selecting module；At this point, second signal selecting module receives second control signal, the second letter
Number input terminal is connected with second connection end, received by second signal input terminal from the output end of the LED drive module described in
First luminous signal sends first luminous signal by the second connection end, to realize the first luminous signal from the
One signal selection module is sent to second signal selecting module.
Likewise, second connection end and second signal are defeated when second signal selecting module receives first control signal
Outlet conducting receives second luminous signal by the second connection end, and by the second signal output end by institute
The input terminal that the second luminous signal is sent to the LED drive module is stated, the output end that LED drive module passes through shines second
Signal is sent to the first signal selection module, at this point, the first signal selection module receives second control signal, the first signal is defeated
Outlet is connected with second connection end, receives second from the output end of the LED drive module by the first signal input part and shines
Signal sends second luminous signal by first connecting pin, to realize that the second luminous signal is selected from second signal
It selects module and is sent to the first signal selection module.
It is worth mentioning, first luminous signal and second luminous signal can be same luminous signal, can also
To be different luminous signals, in the present embodiment, the first luminous signal and the second luminous signal belong to luminous signal, and first shines
Signal and the second luminous signal are the difference is that the transmission direction of the two is different, specifically, luminous signal includes R, G, B tri-
Kind signal, i.e. red signal light, green optical signal and blue light signals.
The LED drive module drives LED for receiving the first luminous signal, according to first luminous signal, also uses
In receiving the second luminous signal, the LED is driven according to two luminous signal.One embodiment is that LED drive module is used
In connection LED, when LED drive module receives the first luminous signal, LED drive module drives according to first luminous signal
LED drives the LED according to two luminous signal when LED drive module receives the second luminous signal.
Above-mentioned LED shows cascade Mach-Zehnder interferometer circuit, when control module sends first control signal to the first signal selection module,
When sending second control signal to second signal selecting module, the first signal selection module is obtained from upper level connection circuit and is shone
Signal is sent to second signal selecting module, is sent to next cascade circuit by second signal selecting module, conversely, when control
Module sends first control signal to second signal selecting module, when sending second control signal to the first signal selection module,
Second signal selecting module obtains luminous signal from upper level connection circuit, is sent to the first signal selection module, by the first letter
Number selecting module is sent to next cascade circuit, so that the first signal selection module and second signal selecting module all can be achieved
The reception of luminous signal and the transmission of luminous signal, without selecting input direction and outbound course when installation, so that expansion cascading
It is more convenient, be conducive to increase the compatibility between product, reduce production cost, is conducive to after-sales service.
Corresponding control letter is sent to the first signal selection module and second signal selecting module for the ease of control module
Number, the control module is used for by receiving the first adjustment signal, the first signal behavior of Xiang Suoshu in one of the embodiments,
Module sends the first control signal, and sends the second control signal, the control to the second signal selecting module
Molding block is also used to receive the second adjustment signal, and the first signal selection module of Xiang Suoshu sends second control signal, and to described
Second signal selecting module sends the first control signal.In one embodiment, first adjustment signal is low level
Signal, second adjustment signal are high level signal.In this way, can be according to the adjustment signal received, consequently facilitating control
Module sends corresponding control signal to the first signal selection module and second signal selecting module.
First control signal and second control signal are generated in order to realize that control module receives an adjustment signal, wherein
In one embodiment, the control signal generates the first control signal for receiving the first adjustment signal, and by described the
One control signal reversion generates the second control signal；The control signal is also used to receive the second adjustment signal, generates institute
Second control signal is stated, and second control signal reversion is generated into the first control signal.Reversion is signal reversion, tool
Body, low level signal is inverted to high point ordinary mail number, or high point ordinary mail number is inverted to low level signal, the present embodiment
In, control module, which inverts the first adjustment signal, generates first control signal, and first control signal reversion is generated the second control
Signal processed, control module, which inverts the second adjustment signal, generates second control signal, and second control signal is inverted and is generated
First control signal, such control module produce first control signal and the second control by receiving an adjustment signal
Signal.
For the ease of making control module send corresponding control to the first signal selection module and second signal selecting module
Signal please refers to LED described in Fig. 3 and Fig. 7 in one of the embodiments, and shows that cascade Mach-Zehnder interferometer circuit further includes signal converting
Card 600, the signal switching card 600 is connect with the control module 300, and the control module is for receiving the signal converting
The adjustment signal of card, for generating the first control signal and the second control signal by the reception adjustment signal,
And the first control signal and institute are sent to first signal selection module and the second signal selecting module respectively
State second control signal.
Specifically, signal switching card is referred to as HUB card (transponders of multiplex roles), for carrying out the forwarding of signal,
In one embodiment, signal switching card have multiple interfaces, user can by define an interface signal type, thus
Adjustment signal is sent to control module to by the interface, one embodiment, the type of the signal of the interface is high level, another
A embodiment, the type of the signal of the interface are low level, specifically, control module is used for according to the adjustment signal, to the
One signal selection module sends first control signal and sends second control signal to second signal selecting module, or to the
One signal selection module sends second control signal and sends first control signal to second signal selecting module, in a reality
It applies in example, when the adjustment signal is low level signal, the control module sends institute to first signal selection module
First control signal is stated, Xiang Suoshu second signal selecting module sends the second control signal, when the adjustment signal is height
When level signal, the control module sends second control signal, Xiang Suoshu second signal to first signal selection module
Selecting module sends the first control signal.In the present embodiment, first control signal is high level signal, second control signal
It for low level signal, is connect by signal switching card with control module, signal switching card sends adjustment signal to control module, then
User according to demand in definition signal adapter adjustment signal type, consequently facilitating making control module to the first signal behavior mould
Block and second signal selecting module send corresponding control signal.
First control signal and second control signal are generated for the ease of control module, is asked in one of the embodiments,
Refering to Fig. 2 a, Fig. 2 b, Fig. 4 and Fig. 6, the control module 300 is phase inverter, the first input end of the phase inverter and the letter
Number adapter connection 600, the first output end of the phase inverter is connect with the second input terminal of the phase inverter, the phase inverter
The first output end also connect with first signal selection module 100, the second output terminal of the phase inverter and described second
Signal selection module 200 connects.
It should be understood that phase inverter, that is, non-door controller, phase inverter is for carrying out signal reversion, for example, phase inverter can be with
High level signal is reversed to low level signal and exports low level signal, or low level signal is reversed to high level signal
And export high level signal.Specifically, the first output end of the phase inverter is connect with first signal selection module, i.e. institute
The first output end for stating phase inverter is connect with the SO pin of first signal selection module, the second output terminal of the phase inverter
It is connect with the second signal selecting module, i.e., the SO of the second output terminal of the described phase inverter and the second signal selector is managed
Foot connection, by the way that the first output end of phase inverter and the second input terminal are shorted, so that adjustment signal is handled by phase inverter, it is defeated
First control signal and second control signal out, consequently facilitating control module generates first control signal and second control signal.
Specifically, when the first input end of phase inverter receives a signal, by the first output end directly by the letter
Number output, the first output end output signal phase inverter is input to by the second input terminal so that the signal is inverted, after reversion
Signal exported by second output terminal, in this way, enabling phase inverter opposite by the first output end and the second output two
Signal, and be respectively sent to the first signal selection module and second signal selecting module.
Adjustment signal is obtained for the ease of control module, please refers to Fig. 3, Fig. 6 and Fig. 7 in one of the embodiments, institute
The LED stated shows that cascade Mach-Zehnder interferometer circuit further includes first interface module J P1 and second interface module J P2, the control module 300
It is connect respectively with the first interface module J P1 and the second interface module J P2, the first interface module J P1 and described
Second interface module J P2 connect 400 with the signal switching card respectively.Pass through setting first interface module and second interface mould
Block, then first interface module or second interface module by being received the adjustment signal of signal switching card, i.e. user by control module
First interface module or second interface module and signal converting card docking need to only be adjusted consequently facilitating control module obtains
Signal.
For the ease of LED control signal energy transmitted in both directions, Fig. 3 and Fig. 5 are please referred in one of the embodiments, it is described
LED show cascade Mach-Zehnder interferometer circuit further include the first decoding module 510 and the second decoding module 520, first decoding module
510 connect with second decoding module 520, and the control module 300 is translated with first decoding module 510 and second respectively
Code module 520 connects, and the control module 300 is used to send out to first decoding module 510 and second decoding module 520
Send the first control signal or the second control signal.
First decoding module is used for when receiving the first control signal, receives LED control signal, and will
The LED control signal is sent to second decoding module；Second decoding module is used to receive first control
When signal processed, the LED control signal is received from first decoding module, and send the LED control signal.
Second decoding module is also used to when receiving the second control signal, receives the light emitting control letter
Number, and the LED control signal is sent to first decoding module；First decoding module is also used to receiving
When the second control signal, the LED control signal is received from second decoding module, and send the light emitting control
Signal.
It should be understood that the control module is used to send institute to first decoding module and second decoding module
First control signal or the second control signal are stated, i.e., the described control module is used to send to the first decoding module and second translates
Code module sends first control signal or the control module and is used to send the to the first decoding module and the second decoding module
Two control signals.The control module is used to send first control signal to the first decoding module and the second decoding module simultaneously,
Or second control signal is sent to the first decoding module and the second decoding module simultaneously.
It is worth mentioning, the first decoding module has the first connecting interface and the second connecting interface, and the second decoder has
Third connecting interface and the 4th connecting interface, when the first decoding module receives first control signal, the first connecting interface is made
For input terminal, the second connecting interface is as output end, and when the first decoding module receives second control signal, the first connecting interface is made
For output end, the second connecting interface is as input terminal, equally, when the second decoding module receives first control signal, third
Connecting interface is as input terminal, and the 4th connecting interface is as output end, when the second decoding module receives second control signal,
Third connecting interface is as output end, and the 4th connecting interface is as input terminal, and in the present embodiment, first control signal is flat for high point
Signal, second control signal are low level signal.
It is worth mentioning, the LED control signal includes: clock signal clk, latch signal LAT, output enable signal
OE and row selection signal A, B, C.
By the first decoding module of setting and the second decoding module, when the first decoding module and the second decoding module module are equal
When receiving first control signal, the first decoding module receives LED control signal, is issued by the second decoding module, so that under
One cascade first decoding module receives LED control signal, when the first decoding module and the second decoding module receive second
When controlling signal, the second decoding module receives LED control signal, is issued by the first decoding module, so that next cascade the
Two decoding modules receive LED control signal, and the control signal that decoding module can be issued according to control module is received, thus
Convenient for the transmitted in both directions of LED control signal.
Send or receive LED control signal for the ease of decoding module, please refer in one of the embodiments, Fig. 5 and
Fig. 6, the LED show that cascade circuit further includes first interface module J P1 and second interface module J P2, the first interface
Module J P1 is connect with first decoding module 510, and the second interface module J P2 and second decoding module 520 connect
It connects.It is connect, then first is translated with the first decoding module by setting first interface module and second interface module, first interface module
Code module can be received or be sent LED control signal, second interface module and the second decoding module by first interface module
Connection, then the second decoding module can be received or be sent LED control signal by second interface module, then user need by
It, only need to be by first interface module and next cascade second interface module-cascade or second interface mould when decoding module cascades
Block and next cascade second interface module-cascade, consequently facilitating decoding module sends or receives LED control signal.
LED control signal is received for the ease of LED drive module, please refers to Fig. 3 and figure in one of the embodiments,
5, first decoding module 510 and second decoding module 520 are connect with the LED drive module 300 respectively, pass through by
First decoding module and the second decoding module are connect with LED drive module respectively, then LED control signal passes through the first decoding mould
Block or the second decoding module are sent to LED drive module, consequently facilitating LED drive module receives LED control signal.
It is received for the ease of the first signal selection module and second signal selecting module or sends luminous signal, wherein
In one embodiment, Fig. 2 a, Fig. 2 b and Fig. 6 are please referred to, the LED shows that cascade Mach-Zehnder interferometer circuit further includes first interface module
JP1 and second interface module J P2, the first interface module J P1 are connect with first connecting pin, the second interface module
JP2 is connect with the second connection end.It is appreciated that luminous signal can be sent from signal switching card, it can also be from upper one
Cascade circuit is sent, and is connect by setting first interface module and second interface module, first interface module with the first connecting pin,
Second interface module is connect with second connection end, then first interface module or second interface module and signal converting card docking, or
Person's first interface module is connect with next cascade second interface module or second interface module connects with next cascade first
Mouth mold block connection, it can the cascade of circuit is realized, consequently facilitating the first signal selection module and second signal selecting module connect
Receive or send luminous signal.
In order to facilitate the use of the user, Fig. 1 to 7, the LED display level joint control are please referred in one of the embodiments,
Circuit 10 processed further includes first interface module J P1, second interface module J P2, the first decoding module 510 and the second decoding module
520, the first interface module J P1 is connect with first connecting pin, and the second interface module J P2 is connect with described second
End connection, the first interface module J P1 also connect with first decoding module 510, the second interface module J P2 also with
Connect with second decoding module 520, the control module 300 respectively with the first interface module J P1 and described second
Interface module JP2 connection, first decoding module 510 are connect with second decoding module 520, the control module 300
It is connect respectively with the first decoding module 510 and the second decoding module 520, first decoding module 510 and second decoding
Module 520 is connect with the LED drive module respectively.User is by the way that first interface module or second interface module to be used in this way
With signal converting card docking, then it can receive luminous signal, LED control signal and adjustment signal in signal switching card, pass through
First interface module is docked with next cascade second interface module or by second interface module and next cascade first
Interface module docking, it can luminous signal, LED control signal and adjustment signal is made to pass through the reception of first interface module, second
Interface module is sent, or is received by second interface module, the transmission of first interface module, consequently facilitating user uses, and
The length of cascade cable can be further decreased, manufacturing cost is reduced.
In one embodiment, as illustrated in figs. 2-7, the model of the first signal selection module and second signal selecting module
The model 74HC245 of FST16292, the first decoding module and the second decoding module, the model 74HC04 of control module, control
First output end of molding block is connect with the DIR pin of the SO pin of the first signal selection module and the first decoding module respectively,
The second output terminal of control module connects with the DIR pin of the SO pin of second signal selecting module and the second decoding module respectively
It connects, the first input end of control module connects with the 16th pin of first interface module and the 16th pin of second interface module respectively
It connects, the first connecting pin and second connection end refer to 1A1,2A1,3A1 ... pin of signal selection module, first input end and
Two input terminals refer to 1B1,2B1,3B1 ... pin of signal selection module, and the first output end and second output terminal refer to signal
1B2,2B2,3B2 ... pin of selecting module.Specifically, first connects when first interface module is connect with signal switching card
Mouth mold block receives adjustment signal, luminous signal and the LED control signal in signal switching card, and first interface module, which will be adjusted, to be believed
Number it is sent to control module, so that luminous signal passes sequentially through the first signal selection module, LED drive module and second signal choosing
It selects module and is sent to second interface module, LED control signal passes sequentially through the first decoding module and the second decoding module is sent to
Second interface module, adjustment signal are sent to second interface module by control module, so that second interface module receives
First interface module in adjustment signal, luminous signal and LED control signal, second interface module and next cascade circuit connects
It connects；Adjustment signal, hair when second interface module is connect with signal switching card, in second interface module reception signal switching card
Optical signal and LED control signal, adjustment signal is sent to control module by second interface module, so that luminous signal successively leads to
It crosses second signal selecting module, LED drive module and the first signal selection module and is sent to first interface module, light emitting control
Signal passes sequentially through the second decoding module and the first decoding module is sent to first interface module, and adjustment signal passes through control module
It is sent to first interface module, so that first interface module receives adjustment signal, luminous signal and LED control signal, the
One interface module is connect with the second interface module in next cascade circuit.
Specifically, Fig. 2-7 is that the cascade for illustrating luminous signal is illustrated by taking the red signal light in luminous signal as an example
Control principle, the cascade Mach-Zehnder interferometer principle of green optical signal and blue light signals in luminous signal and the cascade Mach-Zehnder interferometer principle of red signal light
Be it is identical, and Fig. 2-7 be using in LED control signal clock signal clk and latch signal LAT as embodiment illustrate explanation
The cascade Mach-Zehnder interferometer principle of LED control signal, output enable signal OE and row selection signal A, B in LED control signal, C's
The cascade Mach-Zehnder interferometer principle of cascade Mach-Zehnder interferometer and clock signal clk and latch signal LAT be it is identical, therefore, can not be because of Fig. 2-7
In only enumerate red signal light, clock signal clk and latch signal LAT, and limit the technical solution of the application.
Have in one of the embodiments, there are two LED display cascade Mach-Zehnder interferometer circuit, one of LED is shown
The control module of cascade Mach-Zehnder interferometer circuit is used to send first control signal to first signal selection module, and Xiang Suoshu second believes
Number selecting module sends second control signal, so that the LED shows that the received luminous signal of cascade Mach-Zehnder interferometer circuit passes sequentially through the
One signal selection module, LED drive module and second signal selecting module are sent to next cascade first signal selection module,
Another LED shows that the control module of cascade Mach-Zehnder interferometer circuit is used to send the second control letter to first signal selection module
Number, Xiang Suoshu second signal selecting module sends first control signal, shines so that the LED shows that cascade Mach-Zehnder interferometer circuit is received
Signal passes sequentially through second signal selecting module, LED drive module and second signal selecting module and is sent to next cascade
Binary signal selecting module, LED described in the two show cascade Mach-Zehnder interferometer circuit, realize respectively luminous signal from left to right direction and
It is split to realize data for transmission on direction from right to left.
A kind of LED display is provided in one of the embodiments, including any of the above-described LED as described in the examples is shown
Show cascade Mach-Zehnder interferometer circuit.
In the present embodiment, LED display includes that multiple LED and LED show cascade Mach-Zehnder interferometer circuit, and wherein LED is set in matrix
It sets, the LED of each matrix shows that the LED drive module of cascade Mach-Zehnder interferometer circuit is connect with a LED, and the LED of each matrix is according to LED
The received luminous signal of drive module and LED control signal are shinny.
Above-mentioned LED shows cascade Mach-Zehnder interferometer circuit, when control module sends first control signal to the first signal selection module,
When sending second control signal to second signal selecting module, the first signal selection module is obtained from upper level connection circuit and is shone
Signal is sent to second signal selecting module, is sent to next cascade circuit by second signal selecting module, conversely, when control
Module sends first control signal to second signal selecting module, when sending second control signal to the first signal selection module,
Second signal selecting module obtains luminous signal from upper level connection circuit, is sent to the first signal selection module, by the first letter
Number selecting module is sent to next cascade circuit, so that the first signal selection module and second signal selecting module all can be achieved
The reception of luminous signal and the transmission of luminous signal, without selecting input direction and outbound course when installation, so that expansion cascading
It is more convenient, be conducive to increase the compatibility between product, reduce production cost, is conducive to after-sales service.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of LED shows cascade Mach-Zehnder interferometer circuit characterized by comprising the first signal selection module, second signal select mould
Block, control module and LED drive module；
First signal selection module has the first connecting pin, the first signal output end and the first signal input part, and described the
Binary signal selecting module has second connection end, second signal output end and second signal input terminal, the first signal output
End and second signal output end are connect with the input terminal of the LED drive module respectively, first signal input part and second
Signal input part is connect with the output end of the LED drive module respectively, and the control module is selected with first signal respectively
Select module and the connection of second signal selecting module；
The control module is used for when sending first control signal to first signal selection module, Xiang Suoshu second signal
Selecting module sends second control signal, and the control module is also used to sending the second control to first signal selection module
When signal processed, Xiang Suoshu second signal selecting module sends first control signal；
First signal selection module is used for when receiving the first control signal, is received by first connecting pin
First luminous signal, and first luminous signal is sent to by the LED drive module by first signal output end
Input terminal；The second signal selecting module is used for when receiving the second control signal, passes through the second signal
Input terminal receives first luminous signal from the output end of the LED drive module, sends institute by the second connection end
State the first luminous signal；
The second signal selecting module is also used to when receiving the first control signal, is connect by the second connection end
The second luminous signal is received, and second luminous signal is sent to by the LED by the second signal output end and drives mould
The input terminal of block；First signal selection module is also used to when receiving the second control signal, passes through described first
Signal input part receives second luminous signal from the output end of LED drive module, sends institute by first connecting pin
State the second luminous signal；
The LED drive module drives LED for receiving first luminous signal, according to first luminous signal, also uses
In receiving second luminous signal, the LED is driven according to second luminous signal.
2. LED according to claim 1 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that the control module is for passing through
Receive the first adjustment signal, the first signal selection module of Xiang Suoshu sends the first control signal, and to the second signal
Selecting module sends the second control signal, and the control module is also used to receive the second adjustment signal, and Xiang Suoshu first believes
Number selecting module sends second control signal, and sends the first control signal to the second signal selecting module.
3. LED according to claim 1 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that it further include signal switching card, it is described
Signal switching card is connect with the control module, and the control module is used to receive the adjustment signal of the signal switching card, institute
Control module is stated for generating the first control signal and the second control signal by the reception adjustment signal.
4. LED according to claim 3 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that the control module is phase inverter,
The first input end of the phase inverter is connect with the signal switching card, the first output end and the phase inverter of the phase inverter
The connection of the second input terminal, the first output end of the phase inverter also connect with first signal selection module, the reverse phase
The second output terminal of device is connect with the second signal selecting module.
5. LED according to claim 3 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that further include first interface module and
Second interface module, the control module are connect with the first interface module and the second interface module respectively, and described
One interface module and the second interface module are connect with the signal switching card respectively.
6. LED according to claim 1 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that further include the first decoding module and
Second decoding module, first decoding module are connect with second decoding module, and the control module is translated with first respectively
Code module and the connection of the second decoding module, the control module are used for first decoding module and second decoding module
Send the first control signal or the second control signal；
First decoding module is used for when receiving the first control signal, receives LED control signal, and will be described
LED control signal is sent to second decoding module；Second decoding module is used to receive the first control letter
Number when, receive the LED control signal from first decoding module, and send the LED control signal；
Second decoding module is also used to when receiving the second control signal, receives the LED control signal, and
The LED control signal is sent to first decoding module；First decoding module is also used to receiving described
When two control signals, the LED control signal is received from second decoding module, and send the LED control signal.
7. LED according to claim 6 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that further include first interface module and
Second interface module, the first interface module are connect with first decoding module, the second interface module and described the
The connection of two decoding modules.
8. LED according to claim 6 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that first decoding module and institute
The second decoding module is stated to connect with the LED drive module respectively.
9. LED according to claim 1 shows cascade Mach-Zehnder interferometer circuit, which is characterized in that further include first interface module and
Second interface module, the first interface module are connect with first connecting pin, the second interface module and described second
Connecting pin connection.
10. a kind of LED display, which is characterized in that including the LED display level joint control as described in claim any one of 1-9
Circuit processed.
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| CN110085163B (en) | 2021-03-02 |
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