CN112634825A - Display circuit for splicing display, splicing display structure and display system - Google Patents
Display circuit for splicing display, splicing display structure and display system Download PDFInfo
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- CN112634825A CN112634825A CN202011641303.3A CN202011641303A CN112634825A CN 112634825 A CN112634825 A CN 112634825A CN 202011641303 A CN202011641303 A CN 202011641303A CN 112634825 A CN112634825 A CN 112634825A
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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]
Abstract
The application relates to a display circuit, a splicing display structure and a display system for splicing display, which belong to the field of subway tunnel display and are used for solving the problem that the display system in the related technology cannot adapt to the inner wall of the cambered surface of a subway tunnel, the display system comprises a plurality of display structures, the display structures are formed by sequentially connecting a plurality of display circuits, each display circuit comprises a circuit board, display pixel points arranged on the circuit board, a signal input interface, a signal output interface and a display driving unit for controlling the display of the display pixel points, the display driving unit is arranged opposite to the signal input interface and the signal output interface and can buffer display control signals accessed by the signal input interface, the signal output interface can output the display control signals accessed by the corresponding signal input interface, and the display structures are formed by splicing the plurality of display circuits according to the display requirements, the method can be suitable for the requirements of scenes such as the inner wall of the cambered surface of the subway tunnel and the like on the display surface.
Description
Technical Field
The application relates to the field of subway tunnel display, in particular to a display circuit, a splicing display structure and a display system for splicing display.
Background
Subway tunnel display is a technology for setting a display system in a subway tunnel to display related information such as advertisement media information or subway station information.
In the related art, a display system applied to a subway tunnel generally comprises a display circuit board, wherein LED lamps are welded on the display circuit board, the display circuit board is arranged on planes on two sides of the subway tunnel, and through controlling the display time of the LED lamps, images, characters or video streams appointed for passengers can be presented when the subway passes through the tunnel, so that the display of related information such as advertisement media information and subway station information is realized.
In view of the above-mentioned related art, the inventor thinks that the display system is only adapted to the planar inner walls at two sides of the subway tunnel, but not adapted to the cambered inner wall at the top of the subway tunnel.
Disclosure of Invention
In order to adapt to the inner wall of the cambered surface in the subway tunnel, the application provides a display circuit, a splicing display structure and a display system for splicing display.
In a first aspect, the present application provides a display circuit for tiled displays. The display circuit includes:
a circuit board;
a plurality of display pixel points which are arranged to one side of one board surface of the circuit board in one or more rows to one side opposite to the one side;
a plurality of signal input interfaces and a plurality of signal output interfaces, wherein the plurality of signal input interfaces are arranged on one side, and the plurality of signal output interfaces are arranged on the side opposite to the one side; and
the display driving unit is arranged relative to a group of signal input interfaces and signal output interfaces, the input end of the display driving unit is connected with the signal input interfaces and is used for caching display control signals accessed by the signal input interfaces so as to control the display pixel points according to the display control signals; the signal output interface can be connected with a specified signal input interface so as to output a display control signal accessed by the specified signal input interface;
in the other groups of the signal input interfaces and the signal output interfaces, the signal input interfaces are connected with the signal output interfaces, so that the signal output interfaces in the other groups can output display control signals accessed by the corresponding signal input interfaces.
By adopting the technical scheme, each signal input interface of each display circuit can be connected with one display control signal, the display control signals connected with the display driving units can control the display circuits to display, each signal output interface can output the display control signals connected with the corresponding signal input interfaces, and therefore parallel transmission of the display control signals is achieved. This display circuit can splice the display surface that forms different shapes, with the demand that adapts to different display surfaces, like the curved surface in adaptation subway tunnel, and the connected mode that shows through this display circuit concatenation is comparatively simple, the setting has been made things convenient for, parallel transmission makes mutual noninterference between the display control circuit, every display circuit's display drive unit only needs to handle appointed display control signal, need not carry out work such as the reprint of selecting appointed display control signal and other display control signals in a plurality of display control signals, be favorable to reducing display circuit's cost, improve display circuit's processing speed.
Optionally, the circuit board is rectangular, the plurality of display pixel points are arranged at equal intervals along the length of the circuit board, and the distance between the display pixel points at the two ends and the edge of the circuit board is not greater than half of the equal interval.
By adopting the technical scheme, the circuit board shape is regular, the production and manufacturing are convenient, the distance between adjacent display pixel points and the distance between the display pixel points at the two ends of the display circuit and the edge of the circuit board are matched, when a plurality of display circuits are used for splicing display, the distance between the display pixel points between the adjacent display circuits can be enabled to be equal to the distance between the adjacent display pixel points in each display circuit by setting the distance between the adjacent display circuits, so that the display pixel points on the display surface formed by splicing are uniform, and the display effect is favorably improved.
Optionally, the signal input interfaces are respectively arranged at two ends of the circuit board.
By adopting the technical scheme, when the two display circuit boards are spliced, the signal input interface of one display circuit can be relatively close to the signal output interface of the other display circuit, so that convenience is provided for the splicing display of the display circuits.
Optionally, the display pixel point is a three-color LED lamp.
By adopting the technical scheme, the display pixel point is the three-color LED, the cost is lower, the display is stable, and the display effect is better.
Optionally, the display circuit further includes: and the other groups of the signal input interfaces and the signal output interfaces are connected through the bus driving unit.
By adopting the technical scheme, the bus driving unit realizes the parallel connection of the signal input interface and the signal output interface in the display circuit, has lower cost and is beneficial to the more stable transmission process of the display control signal.
Optionally, the system further includes a resistor position identifier in one-to-one correspondence with the plurality of signal output interfaces, where the resistor position identifier is used to set a zero-ohm resistor;
the resistor position mark is arranged between the display driving unit and the signal output interface opposite to the display driving unit, and when the zero ohm resistor is arranged at the resistor position mark, the display driving unit is connected with the opposite signal output interface; any one of the other resistor position marks is arranged at the signal output interface opposite to the display driving unit and the common end of the signal output interface opposite to the any one and the bus driving unit, and when the zero ohm resistor is arranged at the any one position, the signal output interface opposite to the display driving unit outputs the display control signal accessed by the signal input interface opposite to the any one.
Through adopting above-mentioned technical scheme, through setting up zero ohm resistor at appointed resistor position sign can realize in the display circuit that the relative signal of display drive unit goes out the interface output appointed signal and goes into the display control signal that the interface inserts, when the display circuit concatenation, only need in the adjacent display circuit relative signal go into interface and signal go out the interface connection can, need not signal and go into interface and signal and go out interface dislocation connection, further provide convenience for the concatenation of display drive unit.
In a second aspect, a tiled display architecture is provided. The tiled display structure comprising a plurality of display circuits according to the first aspect; wherein the content of the first and second substances,
the display circuits are connected in sequence;
in the first display circuit, a signal input interface opposite to a display driving unit is used for accessing a display driving signal for driving the display circuit to display, and other signal input interfaces are respectively accessed to other display control signals;
in two adjacent display circuits, a signal input interface opposite to the display driving unit in the rear display circuit is connected with a signal output interface used for outputting a specified display control signal of the front display circuit; and other signal input interfaces in the rear display circuit are respectively connected with other signal output interfaces in the front display circuit.
Through adopting above-mentioned technical scheme, a plurality of display circuit concatenations form the display structure, can adapt to the needs of different shapes display surfaces, and the parallel transmission in display circuit shows control signal, and every display circuit only handles the display control signal who is used for controlling self demonstration, makes this display structure can adapt to the needs of different display surfaces, and the cost is lower, the display effect is better, to showing that control signal's processing speed is very fast.
Optionally, the whole display surface of the display structure is a plane or a curved surface.
By adopting the technical scheme, different display surfaces can adapt to different display requirements, and the usability of the display surface is improved.
In a third aspect, the present application provides a display system. The display system comprises a plurality of display structures as described in the second aspect.
By adopting the technical scheme, the display system is formed by applying a plurality of display structures according to the second aspect, so that various display requirements can be met.
Optionally, the whole display surface of the display structure is a curved surface matched with the cross section of the tunnel, and the display structures are sequentially arranged along the length direction of the tunnel;
further comprising:
each display control module is arranged relative to one display structure and is used for inputting display control signals to a signal input interface of a first display circuit in the relative display structure; the display control modules are sequentially in communication connection;
the vehicle speed measuring module is arranged in the tunnel and used for outputting passing speed information reflecting the speed of the vehicle passing through the tunnel;
the control synchronization module is connected with the vehicle speed measurement module to output synchronization control information responding to the traffic speed information;
and the centralized control module is connected with the control synchronization module and the display control module and is used for controlling the display control module according to the synchronization control information so as to control other display control modules and further control the display images of all the display structures.
By adopting the technical scheme, the display system is suitable for the structure of the subway tunnel, can bear the display work in the subway tunnel, and controls the display time of each display structure through the matching of the vehicle speed measuring module, the control synchronization module, the centralized control module and the display control module, so that passengers in the subway in the passing tunnel can watch the information displayed by the display system, and the display of related information such as advertisement media information and station information is realized.
In summary, the present application includes at least one of the following beneficial technical effects:
the display circuit, the display structure and the display system are used for splicing display, the display circuit can be spliced to form the display structure, the display structure can be combined to form the display system, the display structure or the display system formed by the display circuit can display, the requirements of different display surfaces can be met, the display cost is low, and the display effect is good.
Drawings
Fig. 1 shows a schematic structural diagram of a display circuit in an embodiment of the present application.
Fig. 2 shows a schematic structural diagram of a display structure in an embodiment of the present application.
Fig. 3 shows a schematic structural diagram of a display system in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The embodiments of the present application are specifically disclosed below with reference to fig. 1 to 3.
Fig. 1 shows a schematic structural diagram of a display circuit 100 in an embodiment of the present application. The display circuit 100 includes a circuit board, a display pixel, a signal input interface, a signal output interface, and a display driving unit.
The display pixel points are arranged on one surface of the circuit board and are arranged in one or more rows from one side of the circuit board to the other side opposite to the one side. The signal input interface and the signal output interface are arranged in pairs, the signal input interface is used for accessing the display control signal, and the signal output interface is used for outputting the display control signal accessed by the signal input interface opposite to the signal input interface. The display driving unit is arranged between a signal input interface and a signal output interface and used for caching the display control signal accessed by the signal input interface, so that the display of the display pixel point can be controlled by the display control signal.
The circuit board may be rectangular, or may be parallelogram or any other shape that can be spliced, and only the display circuit 100 needs to be spliced. The display pixel points can be LED lamps, LCD lamps or other light sources, and can be arranged in a row or in multiple rows. The signal input interface and the signal output interface are respectively located on the one side and the other side of the circuit board, so that when the display circuits 100 are spliced, the signal connection between the adjacent display circuits 100 is facilitated.
In some examples, the circuit board of the display circuit 100 is rectangular. The display pixel point is a three-color LED lamp, and the three colors can be three primary colors. The display pixels are arranged on one surface of the circuit board at equal intervals along the direction parallel to the long edge of the circuit board and are arranged from one end of the circuit board to the other end of the circuit board. For the convenience of splicing the plurality of display circuits 100, the distance between the display pixel points at the two ends of the circuit board and the end part of the circuit board is not more than half of the distance between the two adjacent display pixel points, and the display pixel points at the two ends of the circuit board can be specifically selected to be respectively located on the two long edges of the circuit board.
The signal input interfaces are arranged on one wide edge of the circuit board, the signal output interfaces are arranged on the other wide edge of the circuit board, and the straight line where each pair of the opposite signal input interface and the signal output interface is located is parallel to the long edge of the circuit board.
The display driving unit can be specifically selected as an LED display serial cache driving unit, a signal access end of the display driving unit is connected with a signal input interface, a signal output end of the display driving unit is connected with a signal output interface opposite to the signal input interface, when the signal input interface is accessed with a display control signal, the signal output interface outputs the display control signal, and the display driving unit caches the display control signal. The driving ends of the display driving units are respectively connected with the display pixel points so as to drive the display pixel points to perform display work according to the cached display control signals. The display driving unit can also be any other element which can be accessed and output the display control signal and buffer the display control signal to control the display of the display pixel point, the structure and the principle of the display pixel point driven by the display driving unit can be set to be other elements according to the requirement, and only the display driving unit can drive the display pixel point to display.
The display driving unit is positioned on the board surface of the circuit board and on one side of the display pixel point arrangement straight line, and the display driving unit can be respectively connected with a pair of signal input interfaces and a pair of signal output interfaces which are positioned on the wide side of the circuit board and close to the long side of the side where the display driving unit is positioned in order to facilitate wiring.
The other signal input interfaces and the signal output interfaces are correspondingly connected, when each signal input interface is connected with the display control signal, the corresponding signal output interface can output the corresponding display control signal, namely the signal input interface and the signal output interface are connected in parallel.
IN the display circuit 100, the signal-IN interfaces are identified by IN1, IN2, IN3 … … INn, the signal-IN interfaces are identified by OUT1, OUT2, OUT3 … … OUTn, IN1 corresponds to OUT1, IN2 corresponds to OUT2, and IN3 corresponds to OUT3, … … INn corresponds to OUTn.
Specifically, the display circuit 100 further includes a bus driving unit, which may be a bus driver, and the bus driver is provided with a signal input terminal and a signal output terminal in pair. Each signal input interface is connected with one signal input terminal of the bus driver, and the opposite signal output terminal is connected with the opposite signal output interface so as to realize the communication connection of the opposite signal input interface and the opposite signal output interface and enable the signal output interface to output a display control signal accessed by the signal input interface.
The bus driving unit can be specifically located on the opposite side of the circuit board from the side where the display driving unit is located, so that the display pixel points can be arranged at the position of the middle part of the approximate width of the circuit board, splicing along the width is facilitated, and the display effect is improved.
The structure that the signal input interface and the signal output interface are connected in parallel and do not interfere with each other is beneficial to the parallel transmission of a plurality of display control signals, and the transmission effect is good. The display driving unit is only arranged relative to the pair of signal input interface and signal output interface, and the display driving unit does not need to perform actions such as identification, selection and the like of display driving signals, so that the cost of the display driving unit is reduced, and the processing speed of the display driving unit is improved.
To match the display control signals of the three-color LED lamp, the signal in interface and the signal out interface may be configured as three-way parallel interfaces.
The display circuit 100 further includes a plurality of resistor site indicia, the number of resistor site indicia corresponding to the number of signal-in and signal-out interfaces, each resistor site indicia having a zero ohm resistor that may be considered a wire bonded thereto. A resistor is disposed with respect to a signal output interface. The position mark of the resistor corresponding to the signal output interface corresponding to the display driving unit is arranged between the display driving unit and the corresponding signal output interface, and when the zero-ohm resistor is welded at the position, the display driving unit is conducted with the corresponding signal output interface. The common end of the resistor position mark and the corresponding signal output interface is connected with one end of other resistor position marks, and the other end of each of the other resistor position marks is connected with the common end of the corresponding signal output interface and the bus driving unit. When a zero ohm resistor is welded at the specified resistor position identification, the signal output interface corresponding to the display driving unit outputs a display driving signal accessed by the signal input interface corresponding to the resistor position identification.
In the display circuit 100, the resistor position indicators are respectively identified as RP1, RP2, RP3 … … RPn, wherein RP1 corresponds to OUT1, RP2 corresponds to OUT2, RP3 corresponds to OUT3, … … RPn corresponds to OUTn.
The number of the display pixels and the number of the signal input interfaces and the signal output interfaces in the display circuit 100 may be determined according to a specific scene of the tiled display, and the determination of the number of the display pixels and the number of the signal input interfaces and the signal output interfaces in the display circuit 100 is specifically described below by combining the scene of the tiled display.
Fig. 2 shows a schematic structural diagram of a display structure 200 in an embodiment of the present application.
Referring to fig. 2, the display structure 200 includes a plurality of display circuits 100, and particularly, the display circuits 100 are sequentially connected to form the display structure. Only the connection relationship of the display circuit 100 is shown in the figure, and the positional relationship of the display circuit 100 is not shown.
In the display structure 200, the signal input interface of the first display circuit 100 can be connected to a front-end device to receive a display control signal.
In two adjacent display circuits 100, the signal output interface of the display circuit 100 in the back which is opposite to the display driving unit is connected with the signal output interface of the display circuit 100 in the front which outputs the appointed display control signal, so that the appointed display control signal can control the display of the display circuit 100 in the back, and other signal input interfaces of the display circuit 100 in the back are respectively connected with other signal output interfaces of the display circuit 100 in the front, so as to realize the parallel transmission of other display control signals.
In the display structure 200, one display control signal may control one display circuit 100, or may control a plurality of display circuits 100.
In a display scene, the total number of display pixels needs to be 1024, the scene is limited to be tiled and displayed by eight display circuits 100, 128 display pixels can be set on each display circuit 100, if four display control signals are used to control the eight display circuits 100, each display circuit 100 can include four pairs of signal input interfaces and signal output interfaces, the eight display circuits 100 can be tiled to form a display surface with 1024 display pixels, the tiled display surface can be connected with four display control signals, and each display control signal can control two display circuits 100 to display.
One specific display structure 200 scheme may be
Eight display circuits 100 are identified as A1, A2, A3, A4, A5, A6, A7, and A8. Each display circuit comprises four signal-IN interfaces IN1, IN2, IN3 and IN4 and four signal-OUT interfaces OUT1, OUT2, OUT3 and OUT4, display driving units IN a1, a2, A3, a4, a5, A6, a7 and A8 are all arranged relative to IN1 and OUT1, and four display control signals are respectively identified by C1, C2, C3 and C4.
If C1 is used for controlling A1 and A2, C2 is used for controlling A3 and A4, C3 is used for controlling A5 and A6, and C4 is used for controlling A7 and A8, the connection mode can be as follows:
a1, a2, A3, a4, A5, A6, a7, a8 are connected end to end IN sequence, and IN1 IN the display circuit 100 behind IN the adjacent display circuit 100 is connected to OUT1 IN the display circuit 100 ahead, IN2 IN the display circuit 100 behind is connected to OUT2 IN the display circuit 100 ahead, IN3 IN the display circuit 100 behind is connected to OUT3 IN the display circuit 100 ahead, and IN4 IN the display circuit 100 behind is connected to OUT4 IN the display circuit 100 ahead. Among them, zero-ohm resistors are welded at the resistor position identification RP1 in A1, A3, A5 and A7, zero-ohm resistors are welded at the resistor position identification RP2 in A2, zero-ohm resistors are welded at the resistor position identification RP3 in A4, zero-ohm resistors are welded at the resistor position identification RP4 in A6, and zero-ohm resistors are not welded at A8.
Through the connection mode, C1 can control A1 and A2, C2 can control A3 and A4, C3 can control A5 and A6, and C4 can control A7 and A8.
Those skilled in the art can understand how the number of the display pixels, the signal input interfaces and the signal output interfaces in the display circuit 100 are set according to the requirements of a specific scene according to the above description, and the specific connection mode between the display circuits 100 can also be set according to the control scheme. In light of the foregoing disclosure, those skilled in the art can also extend the display structure 200 to include any number of display circuits 100, each display circuit 100 includes any number of display pixels, signal input interfaces, and signal output interfaces, and each display control signal controls any number of display circuits 100, so that other equivalent examples of the display structure 200 are not described herein.
In the display structure 200, a plurality of display control signals are transmitted in parallel, and the display driving unit in each display circuit 100 only receives and caches one designated display control signal, which is beneficial to reducing the cost of the display driving end unit and improving the processing speed of the display driving unit, thereby improving the overall processing speed of the display structure 200. The display control signals are independent and do not interfere with each other, and the stability of the display control signal transmission is improved. And the display circuits 100 can be connected with each other in a short communication line, at a low cost and in a convenient manner.
The display surface of the display structure 200 formed by splicing the display circuits 100 may be a plane, a curved surface, or any shape suitable for the specific scene.
Fig. 3 shows a schematic structural diagram of a display system in an embodiment of the present application.
Referring to fig. 3, the display system includes a plurality of display structures 200, which illustrate the positional relationship between the display structures 200 and the positional relationship of the display circuits 100 in the display structures 200.
The display system may further include a display control module disposed opposite each display structure 200, and the display control module may be capable of outputting a display control signal to the opposite display structure 200, specifically to the first display circuit 100 in the display structure 200. The display control module can control the display circuit 100 in the corresponding display structure 200 to perform the display operation.
The display system may further include a centralized control module, which is connected to the display control module to realize centralized control of all the display control modules, thereby realizing centralized control of all the display structures 200.
Of course, the display system may also include other content depending on the particular scene needs.
For example, in a display system provided in a subway tunnel, the display structure 200 may be a semicircle matching the cross-sectional shape of the subway tunnel, and a plurality of display structures 200 are sequentially provided along the length of the subway tunnel.
The display control module is disposed on one side of the subway tunnel and located at a position where the first display circuit 100 of the display structure 200 is located, so that the display control module is connected to the display structure 200.
The display control modules can be connected in sequence, namely adjacent display control modules are connected in the subway tunnel, so that the connection control of all the display control modules can be realized by connecting the centralized control module with one display control module.
Under this scene, this display system can also include vehicle speed measuring module and control synchronization module, wherein the vehicle speed measuring module sets up in the subway tunnel, be used for whether the highway section that is provided with display structure 200 in confirming the subway reachs the subway tunnel, when this subway tunnel only supplies the one-way current of subway, the vehicle speed measuring module can set up in the entrance of this subway tunnel, when this subway tunnel can supply the two-way current of subway, can set up the vehicle speed measuring module at two mouths of this subway tunnel respectively, the vehicle speed measuring module can output the current speed information of reflection subway current speed.
The control synchronization module is connected with the vehicle speed measurement module, receives the traffic speed information and outputs synchronization control information responding to the traffic speed information. The centralized control module is connected with the control synchronization module and controls the display control module according to the synchronization control information, so that the images displayed by the display structures 200 are matched with the speed of the subway, and passengers on the subway can observe continuous display images through the display structures 200.
In the above, it is a conventional method of a person skilled in the art to control the display image of the display structure 200 according to the speed of the subway, so that a passenger can observe continuous display images, the display control module, the centralized control module, and the synchronous control module can be all configured as devices such as a controller with an information processing function, and it is a conventional technology to measure the speed of the subway through the vehicle speed measurement module, and it is not specifically disclosed herein, but only needs to know the display structure 200 applied by the display system, and it is sufficient to match the cross section of the subway tunnel well.
The display circuit 100, the display structure 200 and the display system are mainly structurally improved for the defects of the display system applied to the subway tunnel in the related art, but it should be understood that the related structure can also be applied to other scenes, for example, the display needs of the scenes such as buildings, roads and the like.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A display circuit for a tiled display, comprising:
a circuit board;
a plurality of display pixel points which are arranged to one side of one board surface of the circuit board in one or more rows to one side opposite to the one side;
a plurality of signal input interfaces and a plurality of signal output interfaces, wherein the plurality of signal input interfaces are arranged on one side, and the plurality of signal output interfaces are arranged on the side opposite to the one side; and
the display driving unit is arranged relative to a group of signal input interfaces and signal output interfaces, the input end of the display driving unit is connected with the signal input interfaces and is used for caching display control signals accessed by the signal input interfaces so as to control the display pixel points according to the display control signals; the signal output interface can be connected with a specified signal input interface so as to output a display control signal accessed by the specified signal input interface;
in the other groups of the signal input interfaces and the signal output interfaces, the signal input interfaces are connected with the signal output interfaces, so that the signal output interfaces in the other groups can output display control signals accessed by the corresponding signal input interfaces.
2. The display circuit for tiled display according to claim 1, wherein the circuit board is rectangular, the display pixels are arranged at equal intervals along the length of the circuit board, and the distance between the display pixel points at two ends and the edge of the circuit board is not more than half of the equal interval.
3. The display circuit for tiled display according to claim 2, wherein a plurality of the signal input interfaces are respectively arranged at two ends of the circuit board.
4. The display circuit for tiled display according to any of the claims 1 to 3, wherein the display pixels are tri-color LED lamps.
5. A display circuit for a tiled display according to any of the claims 1 to 3, further comprising: and the other groups of the signal input interfaces and the signal output interfaces are connected through the bus driving unit.
6. The display circuit for tiled display according to claim 5, further comprising a resistor position identifier in one-to-one correspondence with a plurality of said signal out interfaces, said resistor position identifier being used to set a zero ohm resistor;
the resistor position mark is arranged between the display driving unit and the signal output interface opposite to the display driving unit, and when the zero ohm resistor is arranged at the resistor position mark, the display driving unit is connected with the opposite signal output interface; any one of the other resistor position marks is arranged at the signal output interface opposite to the display driving unit and the common end of the signal output interface opposite to the any one and the bus driving unit, and when the zero ohm resistor is arranged at the any one position, the signal output interface opposite to the display driving unit outputs the display control signal accessed by the signal input interface opposite to the any one.
7. A tiled display structure comprising a plurality of display circuits (100) according to any of claims 1 to 6;
a plurality of the display circuits (100) are connected in sequence;
in the first display circuit (100), a signal input interface opposite to a display driving unit is used for accessing a display driving signal for driving the display circuit (100) to display, and other signal input interfaces are respectively accessed to other display control signals;
in two adjacent display circuits (100), a signal input interface opposite to the display driving unit in the rear display circuit (100) is connected with a signal output interface of the front display circuit (100) for outputting a specified display control signal; other signal input interfaces in the rear display circuit (100) are respectively connected with other signal output interfaces in the front display circuit (100).
8. A tiled display structure according to claim 7, wherein the display surface of the display structure is entirely planar or curved.
9. A display system comprising a plurality of display structures (200) as claimed in claim 7 or 8.
10. The display system according to claim 9, wherein the display surface of the display structure (200) is a curved surface matching the cross section of the tunnel as a whole, and a plurality of the display structures (200) are arranged in sequence along the length direction of the tunnel;
further comprising:
each display control module is arranged relative to one display structure (200) and is used for inputting display control signals to a signal input interface of a first display circuit (100) in the relative display structure (200); the display control modules are sequentially in communication connection;
the vehicle speed measuring module is arranged in the tunnel and used for outputting passing speed information reflecting the speed of the vehicle passing through the tunnel;
the control synchronization module is connected with the vehicle speed measurement module to output synchronization control information responding to the traffic speed information;
and the centralized control module is connected with the control synchronization module and the display control module and is used for controlling the display control module according to the synchronization control information so as to control other display control modules and further control the display images of all the display structures (200).
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