CN104332135A - Parallel display circuit and display device thereof - Google Patents
Parallel display circuit and display device thereof Download PDFInfo
- Publication number
- CN104332135A CN104332135A CN201410605739.5A CN201410605739A CN104332135A CN 104332135 A CN104332135 A CN 104332135A CN 201410605739 A CN201410605739 A CN 201410605739A CN 104332135 A CN104332135 A CN 104332135A
- Authority
- CN
- China
- Prior art keywords
- display device
- port
- address
- module
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention belongs to the technical field of LED (light-emitting diode) display driving, and provides a parallel display circuit and a display device thereof. One or a plurality of display devices parallelly connected to a data bus are arranged in the parallel display circuit, each display device comprises a bus port, a decoding module, a display data caching module, a waveform modulation module, an LED driving module, an address access module, a nonvolatile storage medium, a first port, a second port and a port control module, the port control module is used for detecting signals of the first port or the second port to judge whether the display device is the first display device executing pre-selection operation or not, the pre-selection operation is sequentially executed from the first display device executing the pre-selection operation to the final display device, the first port of the first display device and the second port of the n<th> display device are disconnected from external equipment, and the problems of complicated wiring and signal interference are avoided.
Description
Technical field
The invention belongs to LED display driver technical field, particularly relate to a kind of display circuit in parallel and display device thereof.
Background technology
As shown in Figure 1, the data input pin Sin of all display device in display system in parallel is the output terminals being connected in parallel in controller to display system in parallel, and each display device receives identical data stream.In order to enable each display device obtain the data needed for it and carry out luminescence display from identical data stream, then need to be numbered each display device, be address configuration.When display system in parallel carries out lighting effects display, each display device takes out corresponding data to realize corresponding light display effect according to its address information from data stream.
At present, in the prior art, the mode that the display device in display system in parallel performs the operations such as similar address configuration has following two kinds:
(1) each display device individually carries out the operations such as address configuration; Which is implemented at Practical Project and is needed when safeguarding to consume a large amount of manpowers and too much time, inefficiency, and hinders promoting the use of of parallel display control system;
(2) by adopting special address date port, multiple display device is connected the multiple display device in display system in parallel to be realized to automatic address configuration step by step by its address date port, relative to above-mentioned mode (1), it greatly improves the installation and maintenance efficiency of display system in parallel.
Display system in parallel in aforesaid way (2) as shown in Figure 2, the FPDP Sin of display device connects the first control module 100 with parallel way, address date port is connected in series step by step, namely the address date output port Dout of previous display device connects the address date input port Din of a rear display device, when carrying out address configuration, the second control module 200 continues to send address date to display device 1 and carries out address configuration operation until display device n step by step from display device 1.Display effect data and address date are divided two line transmission by this kind of mode, there is the problem that between wiring complexity and two circuits, signal interferes with each other when engineer applied.
In addition, similar with aforesaid way (2), addressable display driver circuit in parallel and system (application number: in patent documentation 201120169703.9) thereof is called in name, it discloses a kind of display control program, multiple drive circuit chips in display control program are connected in parallel in data bus, this data bus connects display data control unit, can be sequentially connected in series between multiple drive circuit chip; Display data control unit in display control program sends data to multiple drive circuit chip, each drive circuit chip comprises receipt decoding module, display data processing module and address date processing module, by receipt decoding module to the decoding data received, isolate display data and address date, and input shows data processing module and address date processing module respectively, display data processing module is according to showing data output drive signal to control LED display device; Address date processing module then receives and address data, and is forwarded by address date and export to next drive circuit chip, from but each drive circuit chip realize successively writing location operation according to the order be connected in series.There is the problem that between wiring complexity and two circuits, signal interferes with each other equally in this display control program.
In sum, there is the problem that between wiring complexity and two circuits, signal disturbs mutually when prior art uses two circuits to transmit display effect data respectively and carries out address configuration.
Summary of the invention
The object of the present invention is to provide a kind of display device of display circuit in parallel, be intended to solve the problem that between wiring complexity existing when prior art uses two circuits to transmit display effect data respectively and carries out address configuration and two circuits, signal disturbs mutually.
The present invention realizes like this, a kind of display device of display circuit in parallel, one or more display device is connected in parallel in data bus, from the 1st display device, the mode connecting the first port of the 2nd display device according to the second port of the 1st display device is connected to the n-th display device step by step, and n is positive integer; First port of each display device or the second port receive the signal that described data bus transmits when being connected with described data bus;
Described display device comprises bus port, decoder module, display data cache module, waveform modulated module, LED drive module, address access module, non-volatile memory medium, the first port, the second port and port control modules;
Wherein, described bus port is for the data that receive described data bus and transmit or instruction;
Described decoder module is used for the decoding data received, and the display effect data needed for obtaining according to the address information read from described non-volatile memory medium; Described decoder module is also for decoding with output enable signal to the instruction received;
Described display data cache module is used for carrying out buffer memory to the display effect data that described decoder module obtains;
Described waveform modulated module is used for carrying out waveform modulated with output waveform modulation signal according to the display effect data in described display data cache module;
The waveform modulating signal that described LED drive module is used for producing according to described waveform modulated module controls LED display device work;
Described address access module is used for the enable signal exported according to described decoder module, address date is stored to described non-volatile memory medium or reads address date from described non-volatile memory medium;
Described non-volatile memory medium is used for address data;
Described first port and described second port are used for receiving or sending data; Described first port or described second port receive the signal that described data bus transmits when being connected with described data bus;
Described port control modules is used for the enable signal that exports according to described decoder module, carries out input to described first port or described second port, to judge that whether display device is the display device of first execution preselected operation.
Another object of the present invention is also to provide a kind of display circuit in parallel, and it comprises opertaing device and one or more above-mentioned display device, and described opertaing device connects one or more above-mentioned display device by data bus.
The present invention by adopting one or more display device being connected in parallel in data bus in display circuit in parallel, this display device comprises bus port, decoder module, display data cache module, waveform modulated module, LED drive module, address access module, non-volatile memory medium, first port, second port and port control modules, by port control modules, input is carried out to judge that whether display device is the display device of first execution preselected operation to the first port of display device or the second port, then preselected operation is sequentially performed successively until last display device from the display device of first execution preselected operation, and the first port of the 1st display device is not connected external unit with the second port of the n-th display device, avoid the problem of wiring complexity and signal disturbing, therefore the problem that between wiring complexity existing when prior art uses two circuits to transmit display effect data respectively and carries out address configuration and two circuits, signal disturbs mutually is solved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the display system a kind of in parallel that prior art provides;
Fig. 2 is the structural representation of the another kind display circuit in parallel that prior art provides;
Fig. 3 is display device in the display circuit in parallel that provides of the embodiment of the present invention and the annexation schematic diagram between data bus;
Fig. 4 is display device in the display circuit in parallel that provides of the embodiment of the present invention and another annexation schematic diagram between data bus;
Fig. 5 is display device in the display circuit in parallel involved by the embodiment of the present invention and the first example operating diagram between data bus;
Fig. 6 is display device in the display circuit in parallel involved by the embodiment of the present invention and the second example operating diagram between data bus;
Fig. 7 is display device in the display circuit in parallel involved by the embodiment of the present invention and the 3rd example operating diagram between data bus;
Fig. 8 is display device in the display circuit in parallel involved by the embodiment of the present invention and the 4th example operating diagram between data bus;
Fig. 9 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 10 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 11 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 12 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 13 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 14 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 15 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention;
Figure 16 is the inner structure schematic diagram of the display device in the display circuit in parallel involved by the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 3 shows the annexation between display device in the display circuit in parallel that the embodiment of the present invention provides and data bus, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
One or more display device is connected in parallel in data bus 100, from the 1st display device X1, the mode connecting the first port A of the 2nd display device X2 according to the second port B of the 1st display device X1 is connected to the n-th display device Xn step by step, and n is positive integer; First port A of each display device (X1 ~ Xn) or the second port B receives the signal that data bus 100 transmits when being connected with data bus 100, the first port A of each display device (X1 ~ Xn) and the second port B exists the first specified current potential and the second specified current potential respectively when sky connects.
Wherein, the signal that data bus 100 transmits can be pwm signal (i.e. pulse width modulating signal), PFM signal (i.e. pulse frequency modulated signal), data or instruction.Wherein, data are the parameter information of display effect data, address configuration data or display device, and instruction is that execution sequence arranges instruction, instruction such as operation steering order or parameter setting instruction etc.Above-mentioned first specified current potential and the second specified current potential can be respectively high level and low level, or the first specified current potential and the second specified current potential are respectively low level and high level, first specified current potential and the second specified current potential are because display device inside possesses the pull-up resistor that is connected to the first port A and the second port B or pull down resistor is formed, when the first specified current potential and the second specified current potential are respectively high level and low level, display device inside has the pull-up resistor (it connects a direct supply) being connected to the first port A, and also there is the pull down resistor (its ground connection) being connected to the second port B, when the first specified current potential and the second specified current potential are respectively low level and high level, display device inside has the pull down resistor (its ground connection) being connected to the first port A, and also has the pull-up resistor (it connects a direct supply) being connected to the second port B.
In embodiments of the present invention, as shown in Figure 3, the first port A of the 1st display device X1 or the second port B of the n-th display device Xn is connected with data bus 100.Each display device (X1 ~ Xn) is by carrying out input to determine the display device of first execution preselected operation to its first port A or the second port B.
When the 1st display device X1 is the display device of first execution preselected operation, from the 1st display device X1, perform preselected operation successively until the n-th display device Xn.Now the first port A of the 1st display device X1 is connected with data bus 100, and the second port B not connection data bus 100 of the n-th display device Xn, namely sky connects.
When the n-th display device Xn is the display device of first execution preselected operation, from the n-th display device Xn, perform preselected operation successively until the 1st display device X1.Now, the second port B of the n-th display device Xn is connected with data bus 100, and the first port A not connection data bus 100 of the 1st display device X1, namely sky connects.
Wherein, for above-mentioned data transmit-receive attribute, it refers to that the first port A of display device and the second port B is in the ability possessing data receiver or transmission after arranging.Display device arranges instruction according to the execution sequence that data bus 100 transmits can arrange its first port A and the second port B is respectively data receiver port and data sending terminal mouth, then the first port A is responsible for receiving data, and the second port B is responsible for sending data; Display device arranges instruction according to the execution sequence that data bus 100 sends also can arrange its first port A and the second port B is respectively data sending terminal mouth and data receiver port, and the first port A is responsible for sending data, and the second port B is responsible for receiving data.
In addition, as shown in Figure 4, the first port A of the 1st display device X1 and the second port B of the n-th display device Xn also can connect by sky.Each display device (X1 ~ Xn) is by carrying out potentiometric detection to determine the display device of first execution preselected operation to its first port A or the second port B.
When the 1st display device X1 is the display device of first execution preselected operation, from the 1st display device X1, perform preselected operation successively until the n-th display device Xn.
When the n-th display device Xn is the display device of first execution preselected operation, from the n-th display device Xn, perform preselected operation successively until the 1st display device X1.
Data bus 100 transmit operation steering order to before each display device (X1 ~ Xn), simultaneously or afterwards, each display device (X1 ~ Xn) can carry out dynamic signal detection or potentiometric detection to its first port A or the second port B.
For above-mentioned each display device (X1 ~ Xn) by carrying out dynamic signal detection to determine the situation of the display device of first execution preselected operation to its first port A or the second port B, it is specially:
The execution sequence that each display device (X1 ~ Xn) can be transmitted according to data bus 100 arranges the data transmit-receive attribute that instruction arranges its first port A and the second port B and is respectively data receiver port and data sending terminal mouth, each display device (X1 ~ Xn) carries out dynamic signal detection to its first port A, if the first port A of display device receives the Dynamic Signal that data bus 100 sends, then this display device is the 1st the display device X1 that the first port A accesses Dynamic Signal, and is the display device of first execution preselected operation.
In addition, the execution sequence that each display device (X1 ~ Xn) also can be transmitted according to data bus 100 arranges the data transmit-receive attribute that instruction arranges its first port A and the second port B and is respectively data sending terminal mouth and data receiver port, each display device (X1 ~ Xn) carries out input to its second port B, if the second port B of display device receives the Dynamic Signal that data bus 100 sends, then this display device is the n-th display device Xn that the second port B accesses Dynamic Signal, and is the display device of first execution preselected operation.
For above-mentioned each display device (X1 ~ Xn) by carrying out potentiometric detection to determine the situation of the display device of first execution preselected operation to its first port A or the second port B, it is specially:
The execution sequence that each display device (X1 ~ Xn) can be transmitted according to data bus 100 arranges the data transmit-receive attribute that instruction arranges its first port A and the second port B and is respectively data receiver port and data sending terminal mouth, each display device (X1 ~ Xn) carries out potentiometric detection to its first port A, if the current potential of the first port A of display device is the first above-mentioned specified current potential, then this display device is the 1st the display device X1 that the first port A sky connects, and is the display device of first execution preselected operation.
In addition, the execution sequence that each display device (X1 ~ Xn) also can be transmitted according to data bus 100 arranges data transmit-receive attribute that instruction arranges its first port A and the second port B when being respectively data sending terminal mouth and data receiver port, each display device (X1 ~ Xn) carries out potentiometric detection to its second port B, if the current potential of the second port B of display device is the second above-mentioned specified current potential, then this display device is the n-th display device Xn that the second port B sky connects, and is the display device of first execution preselected operation.
As shown in the above, after the data transmit-receive attribute of the first port A and the second port B that determine each display device, correspondingly dynamic signal detection is carried out to the first port A of each display device or the second port B according to data transmit-receive attribute or potentiometric detection just can determine that order performs the initial display device of preselected operation, the display device of namely above-mentioned first execution preselected operation, then just can perform preselected operation successively one by one till last display device from the display device of first execution preselected operation.
Further, for above-mentioned preselected operation, it can be address configuration operation or information back operation.
When the display device of first execution preselected operation is the 1st display device X1, if above-mentioned preselected operation is address configuration operation, and when the operation steering order that data bus 100 transfers to each display device is the address configuration instruction comprising address date, then the 1st display device X1 intercepts first address date bag and to go forward side by side row address configuration from this address date, and export the address date after intercepting to the 2nd display device X2 by its second port B, from the 2nd display device X2, the address date bag that each display device intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, and the address date after intercepting is transferred to next display device by its second port B, with this, address configuration is carried out until the n-th display device Xn to each display device.
Such as: suppose to have four display device in display system in parallel, as shown in Figure 5, be respectively display device X1, display device X2, display device X3 and display device X4, the display device of first execution preselected operation is display device X1.Preselected operation be address configuration operation, and when the operation steering order that data bus 100 transmits is the address configuration instruction comprising address date, display device X1 is after receiving address configuration instruction, from this address date, first intercept first address date bag to go forward side by side row address configuration, then the address date after intercepting is exported to the first port A of display device X2 by its second port B, the address date bag that display device X2 intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, and the address date after intercepting is transferred to the first port A of display device X3 by its second port B, the address date bag that display device X3 intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, and the address date after intercepting is transferred to the first port A of display device X4 by its second port B, the address date bag that display device X4 intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, just whole address configuration process is completed successively according to the direction being connected serially to display device X4 from display device X1 step by step to this.
When the display device of first execution preselected operation is the n-th display device Xn, if preselected operation is address configuration operation, and when the operation steering order that data bus 100 transfers to each display device is the address configuration instruction comprising address date, then the n-th display device Xn intercept from this address date first address date bag go forward side by side row address configuration, and export the address date after intercepting to (n-1)th display device X (n-1) by its first port A, from described (n-1)th display device X (n-1), the address date bag that each display device intercepts first input from the address date arriving its second port B is gone forward side by side row address configuration, and the address date after intercepting is transferred to next display device by its first port A, with this, address configuration is carried out to each display device until the 1st display device X1.
Such as: suppose to have four display device in display system in parallel, as shown in Figure 6, be respectively display device X1, display device X2, display device X3 and display device X4, the display device of first execution preselected operation is display device X4.Preselected operation be address configuration operation, and when the operation steering order that data bus 100 transmits is the address configuration instruction comprising address date, display device X4 is after receiving address configuration instruction, from this address date, first intercept first address date bag to go forward side by side row address configuration, then the address date after intercepting is exported to the first port A of display device X3 by its second port B, the address date bag that display device X3 intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, and the address date after intercepting is transferred to the first port A of display device X2 by its second port B, the address date bag that display device X2 intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, and the address date after intercepting is transferred to the first port A of display device X1 by its second port B, the address date bag that display device X1 intercepts first input from the address date arriving its first port A is gone forward side by side row address configuration, just whole address configuration process is completed successively according to the direction being connected serially to the first display device X4 from display device X4 step by step to this.
In addition, in other embodiments of the present invention, when the display device of first execution preselected operation is the 1st display device X1, if preselected operation is address configuration operation, and when the operation steering order that data bus 100 transfers to each display device is the address configuration instruction comprising first address and address step value, 1st display device carries out address configuration according to first address, and write the first port B of instruction to the 2nd display device X2 by its second port B transmission address update instruction and address, from the 2nd display device X2, when receiving address update instruction at every turn, address update instruction received by its first port A is transferred to next display device by its second port B by each display device, the rest may be inferred sequential delivery to the n-th display device Xn, and each display device is when receiving address update instruction, primary address Data Update is carried out according to address update instruction and address step value, if display device also receives address write instruction at its first port A, then carry out address configuration according to the address date after renewal, and write instruction to next display device by its second port B transmission address update instruction and address.
When the display device of first execution preselected operation is the n-th display device Xn, if preselected operation is address configuration operation, and when the operation steering order that data bus 100 transfers to each display device is the address configuration instruction comprising first address and address step value, n-th display device carries out address configuration according to first address, and the second port B of address update instruction and address write instruction to a (n-1)th display device X (n-1) is sent by its first port A, from (n-1)th display device X (n-1), when receiving address update instruction at every turn, address update instruction received by its second port B is transferred to next display device by its first port A by each display device, sequential delivery that the rest may be inferred is to described n-th display device Xn, and each display device is when receiving address update instruction, primary address Data Update is carried out according to address update instruction and address step value, if display device also receives address write instruction at its second port B, then carry out address configuration according to the address date after renewal, and write instruction to next display device by its first port A transmission address update instruction and address.
It should be noted that, address update instruction can be that address upgrades trigger pip or address stepping multiple control signal herein, and address write instruction is then the instruction for controlling display device executive address configuration operation.Below be described in two kinds of situation:
If 1 address update instruction is address upgrade trigger pip, above-mentioned process of carrying out primary address Data Update according to address update instruction and address step value is specially: display device upgrades trigger pip according to this address, original address date and address step value is carried out being added to obtain new address date.
When display device receives address write instruction, then display device is according to new address date executive address configuration operation.
Wherein, for above-mentioned original address date, it is divided into following two kinds of situations:
(1) before the non-executive address configuration operation of the display device of first execution predetermined registration operation, each display device can receive the address configuration instruction that data bus 100 sends, first address and address step value is comprised, so the original address date in display device is above-mentioned first address in this address configuration instruction;
(2) in the process of multiple display device successively order executive address configuration operation, except the display device of last executive address configuration operation, remaining each display device can send address to follow-up display device when completing address configuration operation and upgrade trigger pip, for the display device of last executive address configuration operation, receive when address upgrades trigger pip at every turn and all can complete primary address renewal, except first time address renewal increases address step value to obtain except new address date on the basis of first address, follow-up address each time more new capital upgrades based on last address the address date obtained, so now said legacy data is exactly that last address upgrades the address date obtained.
Such as: for the display device of four shown in Fig. 5, data bus 100 first send comprise first address X and address step value Y address configuration instruction to four display device (X1 ~ X4), when the display device of first execution preselected operation is display device X1, display device X1 starts to carry out address configuration according to first address X and sends address to upgrade trigger pip to display device X2, this address is upgraded trigger pip again and sends to display device X3 by display device X2, and display device X3 continues this address renewal trigger pip to send to display device X4, now display device X2, display device X3 and display device X4 all carries out primary address renewal, namely on the basis of first address X, increase address step value Y obtain new address date X+Y, because display device X1 completes address configuration, so display device X1 also can send address write instruction to display device X2, then display device X2 carries out address configuration according to the write instruction of this address according to above-mentioned obtained address date X+Y.
Display device X2 sends address and upgrades trigger pip to display device X3 after completing address configuration, this address is also upgraded trigger pip and is sent to display device X4 by display device X3, then now display device X3 and display device X4 carries out primary address renewal again, namely the basis upgrading the address date X+Y obtained in upper once address increases address step value Y and obtains new address date X+2Y, because display device X2 completes address configuration, so display device X2 also can send address write instruction to display device X3, then display device X3 carries out address configuration according to the write instruction of this address according to above-mentioned obtained address date X+2Y.
Display device X3 sends address and upgrades trigger pip to display device X4 after completing address configuration, display device X4 carries out primary address renewal again, namely the basis upgrading the address date X+2Y obtained in upper once address increases address step value Y and obtains new address date X+3Y, because display device X3 completes address configuration, so display device X3 can send address write instruction to display device X4, then display device X4 carries out address configuration according to the write instruction of this address according to above-mentioned obtained address date X+3Y, just whole address configuration process is completed to this.For the display device of four shown in Fig. 6, also realize according to above-mentioned principle in the whole address configuration process of execution, just the order of executive address configuration operation performs to display device X1 from display device X4, therefore repeats no more.
If 2 address update instruction are address stepping multiple control signal, above-mentioned process of carrying out primary address Data Update according to address update instruction and address step value is specially: address step value is carried out multiplication process according to the multiple corresponding to this address stepping multiple control signal and obtains address increment value by display device, and original address date and this address increment value is carried out being added to obtain new address date.
When display device receives address write instruction, then display device is according to new address date executive address configuration operation.
Wherein, for above-mentioned original address date, it is divided into following two kinds of situations:
(1) before the non-executive address configuration operation of the display device of first execution predetermined registration operation, each display device can receive the address configuration instruction that data bus 100 sends, first address and address step value is comprised, so the original address date in display device is above-mentioned first address in this address configuration instruction;
(2) in the process of multiple display device successively order executive address configuration operation, except the display device of last executive address configuration operation, remaining each display device can send address stepping multiple control signal to follow-up display device when completing address configuration operation, for the display device of last executive address configuration operation, all can complete primary address when receiving address stepping multiple control signal to upgrade at every turn, except first time address renewal adds that first address obtains except new address date after the multiplication of address step value, follow-up address each time more new capital upgrades based on last address the address date obtained, so now said legacy data is exactly that last address upgrades the address date obtained.
Such as: for the display device of four shown in Fig. 5, data bus 100 first send comprise first address X and address step value Y address configuration instruction to four display device (X1 ~ X4), when the display device of first execution preselected operation is display device X1, display device X1 starts to carry out address configuration according to first address X and sends address stepping multiple control signal to display device X2, this address stepping multiple control signal is sent to display device X3 again by display device X2, and display device X3 continues this address stepping multiple control signal to send to display device X4, now display device X2, display device X3 and display device X4 all carries out primary address renewal, namely according to the multiple k corresponding to address stepping multiple control signal, multiplication process is carried out to address step value Y and obtain address increment value k × Y, and on the basis of first address X, increase address increment value k × Y obtain new address date X+k × Y, because display device X1 completes address configuration, so display device X1 also can send address write instruction to display device X2, then display device X2 carries out address configuration according to the write instruction of this address according to above-mentioned obtained address date X+k × Y.
Display device X2 sends address stepping multiple and controls signal to display device X3 after completing address configuration, this address stepping multiple control signal is also sent to display device X4 by display device X3, then now display device X3 and display device X4 carries out primary address renewal again, namely according to the multiple k corresponding to address stepping multiple control signal, multiplication process is carried out to address step value Y and obtain address increment value k × Y, and the basis upgrading the address date X+k × Y obtained in upper once address increases address increment value k × Y obtain new address date X+2 × k × Y, because display device X2 completes address configuration, so display device X2 also can send address write instruction to display device X3, then display device X3 carries out address configuration according to the write instruction of this address according to above-mentioned obtained address date X+2Y.
Display device X3 sends address stepping multiple and controls signal to display device X4 after completing address configuration, display device X4 carries out primary address renewal again, namely according to the multiple k corresponding to address stepping multiple control signal, multiplication process is carried out to address step value Y and obtain address increment value k × Y, and the basis upgrading the address date X+2 × k × Y obtained in upper once address increases address increment value k × Y obtain new address date X+3 × k × Y, because display device X3 completes address configuration, so display device X3 can send address write instruction to display device X4, then display device X4 carries out address configuration according to the write instruction of this address according to above-mentioned obtained address date X+3 × k × Y, just whole address configuration process is completed to this.For the display device of four shown in Fig. 6, also realize according to above-mentioned principle in the whole address configuration process of execution, just the order of executive address configuration operation performs to display device X1 from display device X4, therefore repeats no more.
In embodiments of the present invention, budget is operating as to the situation of information back operation, details are as follows:
When the display device of first execution preselected operation is the 1st display device X1, if preselected operation is information back operation, and the operation steering order that data bus 100 transfers to each display device is information back steering order, then corresponding parameter information is returned to data bus 100 according to this information back steering order by the 1st display device X1, and export the first port A of passback triggering command to the 2nd display device X2 by its second port B, from the 2nd display device X2, corresponding parameter information is returned to data bus 100 by the passback triggering command of each display device received by its first port A, and export passback triggering command to next display device by its second port B, each display device is made to return parameter information until the n-th display device Xn to data bus 100 successively with this.
When the display device of first execution preselected operation is the n-th display device Xn, if preselected operation is information back operation, and the operation steering order that data bus 100 transfers to each display device is information back steering order, then corresponding parameter information is returned to data bus 100 according to this information back steering order by the n-th display device Xn, and the second port B of passback triggering command to a (n-1)th display device X (n-1) is exported by its first port A, from (n-1)th display device X (n-1), corresponding parameter information is returned to data bus 100 by the passback triggering command of each display device received by its second port B, and export passback triggering command to next display device by its first port A, each display device is made to return parameter information until the 1st display device X1 to data bus 100 successively with this.
Wherein, information back steering order be data bus 100 send for informing that each display device enters the instruction of information back executing state; Passback triggering command is that display device triggers the instruction that next display device performs information back operation after completing information back operation; Parameter information can be address information, temperature information, information of voltage, various types of information such as current information and function code information of display device.
Such as: for the display device of four shown in Fig. 7 (X1 ~ X4), the display device of first execution information back operation is display device X1, suppose to need display device loop back address information, then display device X1 returns its address information to data bus 100, and exports passback triggering command to the first port A of display device X2 by its second port B; Display device X2 returns its address information to data bus 100 according to this passback triggering command, and exports passback triggering command to the first port A of display device X3 by its second port B; Display device X3 returns its address information to data bus 100 according to this passback triggering command, and exports passback triggering command to the first port A of display device X4 by its second port B; Display device X4 returns its address information to data bus 100 according to this passback triggering command, just completes whole information back operating process to this.For the display device of four shown in Fig. 8, also realize according to above-mentioned principle in the whole information back operating process of execution, the order just performing information back operation performs to display device X1 from display device X4, therefore repeats no more.
In addition, for the display device (X1 ~ Xn) shown in Fig. 3 and Fig. 4, when data bus 100 sends parameter setting instruction to each display device, each display device can also perform corresponding parameter setting operation according to this parameter setting instruction.
Wherein, can to be that to power on that display effect arranges instruction, gray shade scale arranges instruction, drive current arranges instruction, function code arranges instruction, protocol rate arranges instruction etc. various types of arrange instruction to above-mentioned parameter setting instruction, corresponding above-mentioned various parameter setting instruction, display device can correspondingly be arranged parameters such as the display effect that powers on, gray shade scale, drive current, function code and protocol rate.
The embodiment of the present invention additionally provides the structure of above-mentioned each display device, as shown in Figure 9, display device comprises bus port 101, decoder module 102, display data cache module 103, waveform modulated module 104, LED drive module 105, address access module 106, non-volatile memory medium 107, first port A, the second port B port and control module 108.
Wherein, bus port 101 is for the data that receive data bus 100 and transmit or instruction.Wherein, data are display effect data or address date, and instruction is that execution sequence arranges instruction, instruction such as operation steering order or parameter setting instruction etc.
Decoder module 102 is for received decoding data, and the display effect data needed for obtaining according to the address information read from non-volatile memory medium 107; Also for decoding to the instruction received with output enable signal.
Display data cache module 103 carries out buffer memory for the display effect data obtained decoder module 102.
Waveform modulated module 104 is for carrying out waveform modulated with output waveform modulation signal according to the display effect data in display data cache module 103.
The waveform modulating signal that LED drive module 105 produces according to waveform modulated module 104 controls LED display device work.
The enable signal of address access module 106 for exporting according to decoder module 102, is stored to non-volatile memory medium 107 or reads address date from non-volatile memory medium 107 by address date.
Non-volatile memory medium 107 is for address data.Non-volatile memory medium 107 can be EEPROM (Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)), FLSH (flash memory) or OTPROM (One Time Programmable Read-Only Memory, disposable programmable read only memory).
First port A and the second port B is used for receiving or sending data;
The enable signal of port control modules 108 for exporting according to decoder module 102, carries out input to the first port A or the second port B, to judge that whether display device is the display device of first execution preselected operation.
Further, as shown in Figure 10, display device also comprises parameter access module 109, its enable signal for exporting according to decoder module 102, is stored to non-volatile memory medium 107 or the parameter information from non-volatile memory medium 107 reading displayed device by the parameter information in enable signal.
Further, as shown in Figure 11 (corresponding diagram 9) and Figure 12 (corresponding Figure 10), display device also comprises information acquisition module 110 and information back control module 111.Bus port 101 is set to transmit port to send the real-time parameter of parameter information and/or display device to data bus 100 by decoder module 102.
Information acquisition module 110 is for gathering the real-time parameter of display device.
Information back control module 111 reads parameter information for the enable signal that exports according to decoder module 102 from non-volatile memory medium 107 and/or obtains the real-time parameter of display device from information acquisition module 110, and the real-time parameter of parameter information and/or display device is back to bus port 101.
Wherein, the real-time parameter of display device is: the temperature of display device, various types of information such as supply voltage and LED drive current.
Further, in the display device shown in Fig. 9, Figure 10, Figure 11 and Figure 12, the enable signal data transmit-receive attribute to first port A and second port B of port control modules 108 also for exporting according to decoder module 102 is arranged, be set to data receiver port and data sending terminal mouth respectively by the first port A and the second port B, or the first port A and the second port B is set to data sending terminal mouth and data receiver port respectively.
Further, display device as shown in Figure 13 (corresponding diagram 9), Figure 14 (corresponding Figure 10), Figure 15 (corresponding Figure 11) and Figure 16 (corresponding Figure 12), decoder module 102 comprises display data decoder module 120 and instruction decoder module 121.
Display data decoder module 120 is for the display effect decoding data received by bus port 101, and the display effect data needed for obtaining according to the address information read from non-volatile memory medium 107.
Instruction decoder module 121 is for decoding to export above-mentioned enable signal to the instruction received by bus port 101.
Below in conjunction with principle of work, above-mentioned display device is described further:
1, effect display and control process
When LED effect shows, display effect data input through bus port 101, the display effect decoding data of display data decoder module 120 to input, the corresponding display effect data through decoding are obtained according to the address information read from non-volatile memory medium 107, and be cached and carried out waveform modulated by display data cache module 103 for waveform modulated module 104, then control LED display device by LED drive module 105 according to the waveform modulating signal that waveform modulated module 104 produces and carry out corresponding effect display.
2, address configuration operation (address configuration instruction comprises address date)
When executive address configuration operation, address configuration instruction inputs through bus port 101.If this display device is the display device of first executive address configuration operation, then instruction decoder module 121 intercepts the first address date bag that bus port 101 inputs, the address date that instruction decoder module 121 is truncated to by address access module 106 is stored in non-volatile memory medium 107, and the data-out port of the address date after intercepting in the first port A and the second port B exports.
If this display device is not the display device of first executive address configuration operation, instruction decoder module 121 intercepts the first address date bag that the data receiver port in the first port A and the second port B inputs, the address date that instruction decoder module 121 is truncated to by address access module 106 is stored in non-volatile memory medium 107, and the address date after intercepting exports to the data-out port in the first port A and the second port B through port control modules 108.
3, address configuration operation (address configuration instruction comprises first address and address step value)
When executive address configuration operation, address configuration instruction inputs through bus port 101.If this display device is the display device of first executive address configuration operation, instruction decoder module 121 intercepts first address in address configuration instruction and address step value, address access module 106 is by the first address data of intercepting stored in non-volatile memory medium 107, and address update instruction and address write instruction export to the data-out port in the first port A and the second port B through port control modules 108.
If this display device is not the display device of first executive address configuration operation, instruction decoder module 121 intercepts first address in address configuration instruction and address step value, the address update instruction that instruction decoder module 121 inputs according to the data receiver port in the first port A and the second port B and the first address that instruction decoder module 121 is truncated to and address step value carry out address renewal, the address update instruction that data receiver port in first port A and the second port B inputs is exported by the data-out port in the first port A and the second port B, after data receiver port Input Address write instruction in first port A and the second port B, address access module 106 by the address date after instruction decoder module 121 upgrades stored in non-volatile memory medium 107, after data receiver port Input Address write instruction in first port A and the second port B, this display device production dried rhizome of rehmannia location update instruction and address write instruction export to the data-out port in the first port A and the second port B through port control modules 108.
4, information back operation
When performing information back operation, information back instruction inputs through bus port 101.If this display device is the display device of first execution information back operation, bus port 101 is set to transmit port by instruction decoder module 121, information back control module 111 reads the real-time parameter of corresponding parameter information and/or display device and is sent to bus port 101 to return to data bus 101 from non-volatile memory medium 107 and information acquisition module 110, after the real-time parameter sending parameter information and/or display device, bus port 101 is set to receiving port by instruction decoder module 121, and produce passback triggering command through port control modules 108 to the data-out port output in the first port A and the second port B.
If this display device is not the display device of first execution information back operation, after data receiver port input passback triggering command in first port A and the second port B, bus port 101 is set to transmit port by instruction decoder module 121, information back control module 111 reads the real-time parameter of corresponding parameter information and/or display device and is sent to bus port 101 to return to data bus 101 from non-volatile memory medium 107 and information acquisition module 110, after the real-time parameter sending parameter information and/or display device, bus port 101 is set to receiving port by instruction decoder module 121, and produce passback triggering command through port control modules 108 to the data-out port output in the first port A and the second port B.
5, execution sequence is arranged
When arranging the order of execution preselected operation of each display device, execution sequence arranges instruction and inputs through bus port 101, decoded execution sequence signalization is sent to port control modules 108 by instruction decoder module 121, is arranged the data transmit-receive attribute of the first port A and the second end B by port control modules 108.
6, parameter setting operation
When execution parameter setting operation, parameter setting instruction inputs through bus port 101, instruction decoder module 121 will export to parameter access module 109 through decoded parameter information, and parameter information is stored to non-volatile memory medium 107 by parameter access module 109.
In sum, the embodiment of the present invention by adopting one or more display device (X1 ~ Xn) being connected in parallel in data bus 100 in display system in parallel, this display device comprises bus port 101, decoder module 102, display data cache module 103, waveform modulated module 104, LED drive module 105, address access module 106, non-volatile memory medium 107, first port A, second port B and port control modules 108, input is carried out to judge that whether display device is the display device of first execution preselected operation by the first port A of port control modules 108 pairs of display device or the second port B, then preselected operation is sequentially performed successively until last display device from the display device of first execution preselected operation, and the first port of the 1st display device is not connected external unit with the second port of the n-th display device, avoid the problem of wiring complexity and signal disturbing, contribute to reducing project installation and debugging cost, and be convenient to carry out maintenance and management to display system in parallel.
The above-mentioned advantage possessed based on adopting above-mentioned display device in display circuit in parallel, the embodiment of the present invention additionally provides a kind of display system in parallel, it comprises opertaing device and one or more above-mentioned display device, and this opertaing device connects one or more above-mentioned display device by above-mentioned data bus 100.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the display device of a display circuit in parallel, one or more display device is connected in parallel in data bus, from the 1st display device, the mode connecting the first port of the 2nd display device according to the second port of the 1st display device is connected to the n-th display device step by step, and n is positive integer; First port of each display device or the second port receive the signal that described data bus transmits when being connected with described data bus; It is characterized in that, described display device comprises bus port, decoder module, display data cache module, waveform modulated module, LED drive module, address access module, non-volatile memory medium, the first port, the second port and port control modules;
Wherein, described bus port is for the data that receive described data bus and transmit or instruction;
Described decoder module is used for the decoding data received, and the display effect data needed for obtaining according to the address information read from described non-volatile memory medium; Described decoder module is also for decoding with output enable signal to the instruction received;
Described display data cache module is used for carrying out buffer memory to the display effect data that described decoder module obtains;
Described waveform modulated module is used for carrying out waveform modulated with output waveform modulation signal according to the display effect data in described display data cache module;
The waveform modulating signal that described LED drive module is used for producing according to described waveform modulated module controls LED display device work;
Described address access module is used for the enable signal exported according to described decoder module, address date is stored to described non-volatile memory medium or reads address date from described non-volatile memory medium;
Described non-volatile memory medium is used for address data;
Described first port and described second port are used for receiving or sending data;
Described port control modules is used for the enable signal that exports according to described decoder module, carries out input to described first port or described second port, to judge that whether display device is the display device of first execution preselected operation.
2. display device as claimed in claim 1, it is characterized in that, described display device also comprises parameter access module, its enable signal for exporting according to described decoder module, is stored to described non-volatile memory medium or the parameter information from described non-volatile memory medium reading displayed device by the parameter information in described enable signal.
3. display device as claimed in claim 1, it is characterized in that, described display device also comprises information acquisition module and information back control module; Described bus port is set to transmit port to send the real-time parameter of parameter information and/or display device to described data bus by described decoder module;
Described information acquisition module is used for gathering the real-time parameter of display device;
The enable signal that described information back control module is used for exporting according to described decoder module reads parameter information from described non-volatile memory medium and/or obtains the real-time parameter of display device from described information acquisition module, and the real-time parameter of parameter information and/or display device is back to described bus port.
4. display device as claimed in claim 1, it is characterized in that, the enable signal data transmit-receive attribute to described first port and described second port of described port control modules also for exporting according to described decoder module is arranged.
5. the display device as described in any one of Claims 1-4, is characterized in that, described decoder module comprises display data decoder module and instruction decoder module;
Described display data decoder module is used for the display effect decoding data received by described bus port, and the display effect data needed for obtaining according to the address information read from described non-volatile memory medium;
Described instruction decoder module is used for decoding to export described enable signal to the instruction received by described bus port.
6. a display circuit in parallel, comprise opertaing device, it is characterized in that, described display system in parallel also comprises one or more display device as described in any one of claim 1 to 5, and described opertaing device connects one or more described display device by data bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605739.5A CN104332135B (en) | 2014-10-30 | 2014-10-30 | A kind of display circuit in parallel and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605739.5A CN104332135B (en) | 2014-10-30 | 2014-10-30 | A kind of display circuit in parallel and display device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104332135A true CN104332135A (en) | 2015-02-04 |
| CN104332135B CN104332135B (en) | 2016-12-07 |
Family
ID=52406852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410605739.5A Active CN104332135B (en) | 2014-10-30 | 2014-10-30 | A kind of display circuit in parallel and display device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104332135B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106157887A (en) * | 2016-08-30 | 2016-11-23 | 东莞芯成电子科技有限公司 | Serial parallel, the method for transmitting signals of high efficiency driving chip and system thereof |
| CN106231759A (en) * | 2016-09-13 | 2016-12-14 | 深圳市明微电子股份有限公司 | A kind of landscape decorative lamp system and automatic address coded method thereof |
| CN109257841A (en) * | 2018-07-26 | 2019-01-22 | 深圳市明微电子股份有限公司 | The writing system and wiring method of coded address |
| CN110379357A (en) * | 2019-06-05 | 2019-10-25 | 宗仁科技(平潭)有限公司 | A kind of control method and device of parallel connection LED drive circuit |
| CN114495814A (en) * | 2022-03-02 | 2022-05-13 | 深圳市绿源半导体技术有限公司 | LED display transmission system |
| CN118397961A (en) * | 2024-06-28 | 2024-07-26 | 广州中基国威电子科技有限公司 | Addressing method of driving chip, lamp strip and display screen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002132237A (en) * | 2000-10-26 | 2002-05-09 | Seiko Epson Corp | Display driver, display unit having the same and electronic apparatus |
| CN202183219U (en) * | 2011-05-25 | 2012-04-04 | 深圳市明微电子股份有限公司 | Addressing parallel display drive circuit and system thereof |
| CN102800279A (en) * | 2011-05-25 | 2012-11-28 | 深圳市明微电子股份有限公司 | Display drive circuit and system thereof |
| CN103839519A (en) * | 2011-05-25 | 2014-06-04 | 深圳市明微电子股份有限公司 | Display driving circuit and system with same |
-
2014
- 2014-10-30 CN CN201410605739.5A patent/CN104332135B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002132237A (en) * | 2000-10-26 | 2002-05-09 | Seiko Epson Corp | Display driver, display unit having the same and electronic apparatus |
| CN202183219U (en) * | 2011-05-25 | 2012-04-04 | 深圳市明微电子股份有限公司 | Addressing parallel display drive circuit and system thereof |
| CN102800279A (en) * | 2011-05-25 | 2012-11-28 | 深圳市明微电子股份有限公司 | Display drive circuit and system thereof |
| CN103839519A (en) * | 2011-05-25 | 2014-06-04 | 深圳市明微电子股份有限公司 | Display driving circuit and system with same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106157887A (en) * | 2016-08-30 | 2016-11-23 | 东莞芯成电子科技有限公司 | Serial parallel, the method for transmitting signals of high efficiency driving chip and system thereof |
| CN106157887B (en) * | 2016-08-30 | 2019-02-05 | 东莞芯成电子科技有限公司 | A kind of method for transmitting signals and its system of serial parallel driving chip |
| CN106231759A (en) * | 2016-09-13 | 2016-12-14 | 深圳市明微电子股份有限公司 | A kind of landscape decorative lamp system and automatic address coded method thereof |
| CN109257841A (en) * | 2018-07-26 | 2019-01-22 | 深圳市明微电子股份有限公司 | The writing system and wiring method of coded address |
| CN109257841B (en) * | 2018-07-26 | 2020-09-25 | 深圳市明微电子股份有限公司 | Writing system and writing method of coded address |
| CN110379357A (en) * | 2019-06-05 | 2019-10-25 | 宗仁科技(平潭)有限公司 | A kind of control method and device of parallel connection LED drive circuit |
| CN114495814A (en) * | 2022-03-02 | 2022-05-13 | 深圳市绿源半导体技术有限公司 | LED display transmission system |
| CN118397961A (en) * | 2024-06-28 | 2024-07-26 | 广州中基国威电子科技有限公司 | Addressing method of driving chip, lamp strip and display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104332135B (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104332135A (en) | Parallel display circuit and display device thereof | |
| CN104464617A (en) | Parallel display system and display devices thereof | |
| CN101877207B (en) | A kind of LED display screen system and control method | |
| CN101256544B (en) | Method, apparatus and system for expansion of inside integrated circuit bus | |
| US20090128080A1 (en) | System and method for controlling multiple servo motors | |
| CN106066834A (en) | There is the bus communication of many equipment messages transmission | |
| CN100383544C (en) | Method and apparatus for real-time monitoring level signal | |
| CN101783812A (en) | FPGA configuration system and configuration method based on network | |
| CN204537117U (en) | A kind of FPGA remote online upgrade-system based on microprocessor | |
| CN102667649A (en) | Multi-processor based programmable logic controller and method for operating the same | |
| CN103902485A (en) | Multi-channel synchronized monitoring method for controlling parallel optical modules | |
| CN103500154A (en) | Serial bus interface chip, serial bus transmission system and method | |
| CN202183219U (en) | Addressing parallel display drive circuit and system thereof | |
| CN102955474A (en) | Measurement control method and system of automobile ECU (electronic control unit) | |
| CN101149722A (en) | Method for executing CPU access to XFP optical module | |
| CN101082896A (en) | Control method and device between master-salve module | |
| CN103841724B (en) | A kind of LED parallel connection lamp control system and parallel connection lamp control circuit thereof | |
| CN105357799A (en) | LED display module management apparatus | |
| US20100125343A1 (en) | Complex Servo Control System | |
| CN205176901U (en) | Electronic tags reads and writes equipment | |
| JP5871309B2 (en) | Bidirectional serial bus communication control method and bidirectional serial bus switch | |
| CN106354041B (en) | A kind of tandem type multinode industrial automation control system of non-all-key parallel bus | |
| CN201698420U (en) | Small-sized pluggable optical receiving-sending module control device based on I2C bus | |
| CN105163108A (en) | Image data dummy source | |
| CN103412845B (en) | A kind of serial bus system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |