CN116524849A - LED display system, device and method - Google Patents

Abstract

The application relates to the technical field of LED display, and specifically provides an LED display system, an LED display device and an LED display method, which comprise the following steps: a first display information transmitting module; the first-level cache is constructed based on hardware, is electrically connected with the first display information sending module and is used for caching the first display information sent by the first display information sending module; one end of the transmission equipment is electrically connected with the first-level cache; the other end of the transmission device is electrically connected with a memory for storing firmware based on a second-level buffer constructed by the firmware; the LED array is electrically connected with the memory for storing the firmware and is used for displaying second display information; the firmware is used for controlling the transmission equipment to acquire second display information based on the first-level cache according to the display refresh rate of the LED array and writing the second display information into the second-level cache, wherein the second display information is one frame of information in the first display information; the system can write the first display information into the first-level cache without occupying the communication bandwidth of the firmware.

Description

A LED display system, device and method

technical field

The present application relates to the technical field of LED display, in particular, to an LED display system, device and method.

Background technique

As shown in Figure 1, the existing LED display system includes a controller (MCU in Figure 1), firmware (Firmware in Figure 1), a control circuit (Controller in Figure 1) and a display panel driver that are electrically connected in sequence (LEDARRAY in Figure 1), the control circuit is integrated with a display buffer that can store one or more frames of display data (Display DataBuffer Memory in Figure 1). The display process of the existing LED display system is: the controller writes the content data (display content) to be displayed into the display buffer through the firmware, and the control circuit transfers the display data from the display frame by frame according to the display refresh rate of the display panel driver. The buffer is sent to the display board driver for display by the display board driver. Since the firmware plays the role of transmission bandwidth when the display content in the controller is written into the display buffer, writing the display content into the display buffer needs to occupy the communication bandwidth of the firmware, and the firmware needs to send the data in the display buffer to the display frame by frame. Board driver, so the amount of data that the firmware needs to process is large, which leads to the situation in the prior art that the communication bandwidth of the firmware is fully occupied and the LED display system is stuck due to the large amount of data generated by the LED display system at one time.

For the above problems, there is no effective technical solution at present.

Contents of the invention

The purpose of the present application is to provide an LED display system, device and method, which can write the first display information into the first-level cache without occupying the communication bandwidth of the firmware.

In a first aspect, the present application provides an LED display system, which includes:

The first display information sending module;

A hardware-based first-level buffer is electrically connected to the first display information sending module, and is used for buffering the first display information sent by the first display information sending module;

a transmission device, one end of which is electrically connected to the first-level cache;

The second-level cache based on firmware, the other end of the transmission device is electrically connected to the memory for storing firmware;

The LED array is electrically connected with the memory for storing the firmware, and is used for displaying the second display information;

The firmware is used to control the transmission device according to the display refresh rate of the LED array to obtain the second display information based on the first-level cache and write it into the second-level cache. The second display information is one frame of information in the first display information.

An LED display system provided by this application directly writes the first display information into the first-level cache, because the firmware of this application is only used to control the transmission device to obtain the second display based on the first-level cache according to the display refresh rate of the LED array. The information is written into the second-level cache, and the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache and sending the data in the first-level cache to the LED array frame by frame, so compared Compared with the existing technology, the system can effectively reduce the data processing volume of the firmware, thereby effectively avoiding the situation that the communication bandwidth of the firmware is fully occupied and the LED display system is stuck due to the large amount of data generated by the LED display system at one time.

Optionally, the transmission device is a DMA transmission device.

Since the DMA transmission device has the advantage of fast data transmission speed, this technical solution can effectively increase the transmission rate of the second display information.

Optionally, the second-level cache includes a plurality of cache units, each cache unit is used to cache a second display information, and the firmware controls the transmission device based on the first-level cache to obtain the second display information based on the display refresh rate of the LED array and write The process of entering the second-level cache includes:

judging whether the second display information in the current cache unit has been displayed;

If yes, the transmission device is controlled according to the display refresh rate of the LED array to obtain the corresponding second display information in the next display stage based on the first-level cache and write it into the current cache unit.

Optionally, the process of the firmware controlling the transmission device to obtain the second display information based on the first-level cache and write the second-level cache according to the display refresh rate of the LED array also includes:

If the display of the second display information in the current cache unit has not been completed, the second level cache is controlled to output the cached second display information, so that the LED array displays the second display information.

Optionally, the process of controlling the transmission device according to the display refresh rate of the LED array to obtain the corresponding second display information in the next display stage based on the first-level cache and write it into the current cache unit also includes:

Determine whether all cache units have been updated;

If not, judging whether the corresponding second display information in the next display stage can be transmitted;

If the corresponding second display information in the next display stage can be transmitted, the transmission device is controlled according to the display refresh rate of the LED array to obtain the second display information based on the first-level cache and write it into the current cache unit.

Optionally, the firmware is further configured to write error information in the cache unit corresponding to the second display information when the transmission device acquires or writes the second display information incorrectly.

Since the error information will not affect the subsequent transmission of the second display information by the transmission device, this technical solution can effectively avoid the situation that the LED array display is stuck due to an error in obtaining or writing the second display information by the transmission device.

Optionally, the firmware is further configured to control the transmission device to retransmit the second display information in the next write cycle when the transmission device acquires or writes the second display information incorrectly.

Since the technical solution controls the transmission device to retransmit the second display information in the next writing cycle when the transmission device acquires or writes the second display information incorrectly, the technical solution can effectively avoid the transmission error caused by the second display information. As a result, the LED array displays flowery frames.

In the second aspect, the present application also provides an LED display device, the device includes firmware, and the firmware includes:

An acquisition module, configured to acquire the display refresh rate of the LED array;

A pre-built L2 cache with frame count and frame structure matching the LED array;

The trigger module is configured to generate trigger information according to the display refresh rate, so that the transmission device obtains the second display information based on the first-level cache and writes it into the second-level cache, the second display information is one frame of information in the first display information, It is also used to control the second-level cache to send the received second display information to the LED array one by one according to the display refresh rate, so that the LED array displays the second display information.

An LED display device provided by this application directly writes the first display information into the first-level cache, because the firmware of this application is only used to control the transmission device to obtain the second display based on the first-level cache according to the display refresh rate of the LED array. The information is written into the second-level cache, and the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache and sending the data in the first-level cache to the LED array frame by frame, so compared Compared with the prior art, the device can effectively reduce the amount of data processing by the firmware, thereby effectively avoiding the situation that the communication bandwidth of the firmware is fully occupied and the LED display system is stuck due to the large amount of data generated by the LED display system at one time.

In the third aspect, the present application also provides an LED display method, which is applied in an LED display system. The LED display system includes a first display information sending module, a first-level buffer based on hardware, a transmission device, and a first-level buffer based on firmware. The second-level cache and the LED array, the first-level cache is electrically connected to the first display information sending module, the first-level cache is used to cache the first display information sent by the first display information sending module, and the two ends of the transmission device are respectively connected to the first display information sending module. The first-level cache is electrically connected to the memory for storing the firmware, the LED array is electrically connected to the memory for storing the firmware, and the LED array is used to display the second display information. The LED display method includes steps:

Obtain the display refresh rate of the LED array;

Generate trigger information according to the display refresh rate, so that the transmission device acquires second display information based on the first-level cache and writes it into the second-level cache, where the second display information is one frame of information in the first display information;

Controlling the second-level cache to send the received second display information to the LED array one by one according to the display refresh rate, so that the LED array displays the second display information.

An LED display method provided by this application directly writes the first display information into the first-level cache, because the firmware of this application is only used to control the transmission device to obtain the second display based on the first-level cache according to the display refresh rate of the LED array. The information is written into the second-level cache, and the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache and sending the data in the first-level cache to the LED array frame by frame, so compared Compared with the prior art, this method can effectively reduce the amount of data processing by the firmware, thereby effectively avoiding the situation that the communication bandwidth of the firmware is fully occupied and the LED display system is stuck due to the large amount of data generated by the LED display system at one time.

Optionally, the construction steps of the second-level cache include:

Configure the frame number and frame structure of the second-level cache according to the LED array.

It can be seen from the above that the LED display system, device and method provided by the present application directly write the first display information into the first-level cache, because the firmware of the present application is only used to control the transmission device based on the display refresh rate of the LED array. The first-level cache acquires the second display information and writes it into the second-level cache, while the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache and the data in the first-level cache frame by frame sent to the LED array, so compared with the existing technology, the system can effectively reduce the amount of data processing of the firmware, thereby effectively avoiding that the communication bandwidth of the firmware is fully occupied due to the large amount of data generated by the LED display system at one time. Indicates that the system is stuck.

Description of drawings

FIG. 1 is a schematic structural diagram of an existing LED display system.

FIG. 2 is a schematic diagram of data transmission of an LED display system provided by an embodiment of the present application.

FIG. 3 is a schematic structural diagram of an LED display system provided by an embodiment of the present application.

Fig. 4 is a schematic structural diagram of an LED display device, a transmission device and an LED array provided by an embodiment of the present application.

FIG. 5 is a flowchart of an LED display method provided by an embodiment of the present application.

Reference signs: 1. First display information sending module; 2. First-level cache; 3. Transmission device; 4. Second-level cache; 5. LED array; 6. Memory for storing firmware; 7. Obtaining module ; 8. Trigger module.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

In the first aspect, as shown in Figure 2 and Figure 3, the present application provides an LED display system, which includes:

The first display information sending module 1;

The hardware-based first-level cache 2 is electrically connected to the first display information sending module 1, and is used to cache the first display information sent by the first display information sending module 1;

A transmission device 3, one end of which is electrically connected to the first-level cache 2;

The second-level cache 4 constructed based on the firmware, the other end of the transmission device 3 is electrically connected to the memory 6 for storing the firmware;

The LED array 5 is electrically connected to the memory 6 for storing the firmware, and is used for displaying the second display information;

The firmware is used to control the transmission device 3 based on the display refresh rate of the LED array 5 to obtain the second display information based on the first-level cache 2 and write it into the second-level cache 4. The second display information is one frame of information in the first display information.

Wherein, the first display information sending module 1 of this embodiment is equivalent to the controller in the prior art, the first display information sending module 1 is used to send the first display information, and the first display information is the content to be displayed by the LED array 5 . The first-level cache 2 is built based on hardware. The hardware in this embodiment is preferably SRAM. The first-level cache 2 is electrically connected to the first display information sending module 1. The first-level cache 2 is used to cache the first display information sending The module 1 sends the first display information (equivalent to the first display information sending module 1 writing the first display information into the first-level cache 2), so the first-level cache 2 is equivalent to the display cache in the prior art. The transmission device 3 can be a program direct control type data transmission device, an interrupt control type data transmission device, a DMA (direct memory access) type data transmission device or a channel type data transmission device, etc. program, so the two ends of the transmission device 3 are respectively electrically connected to the first-level cache 2 and the memory 6 for storing firmware, and the transmission device 3 can transmit the data in the first-level cache 2 to the second-level cache 4 . The second-level cache 4 is built based on firmware, and the second-level cache 4 is equivalent to a virtual cache. The LED array 5 is a prior art, and will not be discussed in detail here. The LED array 5 and the memory 6 for storing firmware are electrically connected. sexual connection. The firmware is used to control the transmission device 3 to transmit the second display information according to the display refresh rate of the LED array 5. The second display information is the content of one frame of the first display information. The second level cache 4 of this embodiment is equivalent to The display refresh rate of 5 sends the first display information in the first level cache 2 to the LED array 5 frame by frame, so that the LED array 5 can display. It should be understood that, since the second-level cache 4 is a virtual cache, the number of frames and the frame structure of the second-level cache 4 are variable, that is, the second-level cache 4 can cache different amounts of second display information. It should also be understood that the LED display system provided by the present application is preferably applied in a static LED display or an application scenario in which a simple animation is realized based on a multi-frame structure, so the second-level cache 4 preferably satisfies the first-level cache according to the LED array 5 multi-frame structure.

The working principle of this embodiment is: an LED display system provided by this application includes a first display information sending module 1, a first-level cache 2, a transmission device 3, a second-level cache 4, and an LED array 5 that are electrically connected in sequence , the system directly writes the first display information into the first-level cache 2 (equivalent to the existing controller directly writing the display content into the existing display cache), since the firmware of this application is only used for the LED array 5 The display refresh rate control transmission device 3 obtains the second display information based on the first-level cache 2 and writes it into the second-level cache 4, while the firmware of the prior art needs to be used as the transmission bandwidth for writing the first display information into the first-level cache 2 and send the data in the first-level cache 2 to the LED array 5 frame by frame, so compared with the prior art, this system can effectively reduce the data processing amount of the firmware, thereby effectively avoiding the one-time generation of LED display system A large amount of data causes the communication bandwidth of the firmware to be fully occupied, and the LED shows that the system is stuck. It should be understood that in this embodiment, the automatic display of the LED array 5 can be realized without refreshing the first-level cache 2 by configuring the display time, thereby effectively reducing the data transmission bandwidth.

An LED display system provided by this application directly writes the first display information into the first-level cache 2, because the firmware of this application is only used to control the transmission device 3 based on the first-level cache 2 according to the display refresh rate of the LED array 5 Acquiring the second display information and writing it into the second-level cache 4, while the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache 2 and sending the data in the first-level cache 2 frame by frame For the LED array 5, compared with the prior art, the system can effectively reduce the amount of data processing of the firmware, thereby effectively avoiding that the communication bandwidth of the firmware is fully occupied due to the large amount of data generated by the LED display system at one time. Indicates that the system is stuck.

In some embodiments, the transmission device 3 is a DMA transmission device. The DMA transmission device 3 in this embodiment is equivalent to the DMA data transmission device in the above embodiment. Since the DMA transmission device has the advantage of high data transmission speed, this embodiment can effectively increase the transmission rate of the second display information.

In some embodiments, the second-level cache 4 includes a plurality of cache units, and each cache unit is used to cache a second display information, and the firmware controls the transmission device 3 to acquire based on the first-level cache 2 according to the display refresh rate of the LED array 5 The second process of displaying information and writing the second-level cache 4 includes:

judging whether the second display information in the current cache unit has been displayed;

If yes, the transmission device 3 is controlled according to the display refresh rate of the LED array 5 to obtain the corresponding second display information in the next display stage based on the first-level cache 2 and write it into the current cache unit.

Since the writing of the second-level cache 4 needs to take frames as the operation unit, this embodiment can set the The display content corresponding to the first display information is divided into multiple display stages, for example, the total number of frames of the first display information is 20 frames, and the number of buffer units is 10, then the first display information is divided into a display stage, the second One display stage is frame 1-frame 10 of the first display information, and the second display stage is frame 11-frame 20 of the first display information. Judging whether the display of the second display information in the current buffer unit is completed belongs to the prior art, and will not be discussed in detail here. If the second display information in the current cache unit is displayed, the firmware controls the transmission device 3 to obtain the corresponding second display information in the next display stage based on the first-level cache 2 based on the display refresh rate of the LED array 5 and writes it into the current cache. unit to update the current cache unit, and the above steps are repeated until the display of the first display information is completed.

In some embodiments, the process of the firmware controlling the transmission device 3 to acquire the second display information based on the first-level cache 2 and writing it into the second-level cache 4 according to the display refresh rate of the LED array 5 also includes:

If the second display information in the current cache unit has not been displayed, control the second level cache 4 to output the cached second display information, so that the LED array 5 displays the second display information.

In this embodiment, if the second display information in the current cache unit has not been displayed, the firmware controls the current second-level cache 4 to output the cached second display information (equivalent to controlling the second display information to be received by the current cache unit). The information is sent to the LED array 5 ), so that the LED array 5 displays the second display information.

In some embodiments, the process of controlling the transmission device 3 based on the display refresh rate of the LED array 5 to obtain the corresponding second display information in the next display stage based on the first-level cache 2 and write it into the current cache unit also includes:

Determine whether all cache units have been updated;

If not, judging whether the corresponding second display information in the next display stage can be transmitted;

If the corresponding second display information in the next display stage can be transmitted, the transmission device 3 is controlled according to the display refresh rate of the LED array 5 to obtain the second display information based on the first-level cache 2 and write it into the current cache unit.

In this embodiment, judging whether all cache units have been updated is equivalent to judging whether the display of the first display information is completed. If the display of the first display information is not completed, it is judged whether the corresponding second display information in the next display stage can be transmitted, and when the corresponding second display information can be transmitted in the next display stage, according to the LED array 5 The display refresh rate control transmission device 3 acquires the second display information based on the first-level cache 2 and writes it into the current cache unit, so as to update the current cache unit.

When the transmission device continuously obtains and writes the second display information, if there is an error in the transmission device obtaining or writing the second display information (such as failure to obtain the second display information, writing the second display information to the second level If the cache 4 fails or cannot write the second display information into the second-level cache 4 within the specified time), it will cause the transmission device 3 to fail to obtain and write the subsequent second display information normally, thus causing the LED array 5 to freeze .

In order to solve this technical problem, in some embodiments, the firmware is further configured to write error information in the cache unit corresponding to the second display information when the transmission device 3 acquires or writes the second display information incorrectly. Since the error information will not affect the subsequent transmission of the second display information by the transmission device 3, this embodiment can effectively avoid the situation that the display of the LED array 5 is stuck due to an error in the transmission device 3 acquiring or writing the second display information.

When the transmission device obtains and writes the second display information discontinuously, if there is an error in the transmission device obtaining or writing the second display information (such as failure to obtain the second display information, writing the second display information into the second If the level-1 cache 4 fails or the second display information cannot be written into the second-level cache 4 within the specified time), it will cause the LED array to display a broken frame.

In order to solve this technical problem, in some embodiments, the firmware is also used to control the transmission device 3 to retransmit the second display information in the next writing cycle when the transmission device 3 obtains or writes the second display information incorrectly. In a write cycle, the transmission device 3 obtains a piece of second display information based on the first-level cache 2 and writes the second display information into the second-level cache 4 . Because when the transmission device 3 obtains or writes the second display information incorrectly, this embodiment controls the transmission device 3 to retransmit the second display information in the next writing cycle, so this embodiment can effectively avoid the occurrence of errors caused by the second display information. The transmission error causes the LED array 5 to display a flowery frame. It should be understood that this embodiment will control the transmission device 3 to retransmit the second display information in the next writing cycle only before the LED array does not display the second display information of the transmission error.

It can be known from the above that the LED display system provided by this application directly writes the first display information into the first-level cache 2, since the firmware of this application is only used to control the transmission device 3 based on the display refresh rate of the LED array 5 The first-level cache 2 obtains the second display information and writes it into the second-level cache 4, and the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache 2 and the transmission bandwidth of the first-level cache 2. The data is sent to the LED array 5 frame by frame, so compared with the prior art, this system can effectively reduce the data processing amount of the firmware, thereby effectively avoiding the communication bandwidth of the firmware being limited due to the large amount of data generated by the LED display system at one time. Occupied, the LED shows the situation that the system is stuck.

In the second aspect, the present application also provides an LED display device, the device includes firmware, and the firmware includes:

An acquisition module 7, configured to acquire the display refresh rate of the LED array 5;

A pre-built second-level cache 4 whose frame number and frame structure matches the LED array 5;

The trigger module 8 is configured to generate trigger information according to the display refresh rate, so that the transmission device 3 obtains the second display information based on the first-level cache 2 and writes it into the second-level cache 4, and the second display information is the information in the first display information One frame of information is also used to control the second-level cache 4 to send the received second display information to the LED array 5 one by one according to the display refresh rate, so that the LED array 5 displays the second display information.

The frame number and frame structure of the second-level buffer 4 in this embodiment match the LED array 5 , specifically, the frame number and frame structure of the second-level buffer 4 match the display mode and display requirements of the LED array 5 . The present application provides an LED display device, which includes firmware. The working principle of the firmware is similar to that of the LED display system provided in the first aspect above, and will not be discussed in detail here.

It can be seen from the above that the LED display device provided by the present application directly writes the first display information into the first-level cache 2, since the firmware of the present application is only used to control the transmission device 3 based on the display refresh rate of the LED array 5 The first-level cache 2 obtains the second display information and writes it into the second-level cache 4, and the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache 2 and the transmission bandwidth of the first-level cache 2. The data is sent to the LED array 5 frame by frame, so compared with the prior art, this device can effectively reduce the data processing amount of the firmware, thereby effectively avoiding the communication bandwidth of the firmware being limited due to the large amount of data generated by the LED display system at one time. Occupied, the LED shows the situation that the system is stuck.

In the third aspect, the present application also provides an LED display method, which is applied in an LED display system. The LED display system includes a first display information sending module 1, a hardware-based first-level cache 2, a transmission device 3, a firmware-based The second-level cache 4 and the LED array 5 are constructed, the first-level cache 2 is electrically connected to the first display information sending module 1, and the first-level cache 2 is used to cache the first display information sent by the first display information sending module 1 , the two ends of the transmission device 3 are respectively electrically connected to the first-level cache 2 and the memory 6 for storing the firmware, the LED array 5 is electrically connected to the memory 6 for storing the firmware, and the LED array 5 is used for displaying the second display information, the LED display method includes steps:

S1. Obtain the display refresh rate of the LED array 5;

S2. Generate trigger information according to the display refresh rate, so that the transmission device 3 acquires second display information based on the first-level cache 2 and writes it into the second-level cache 4, where the second display information is one frame of information in the first display information;

S3. Control the second-level cache 4 to send the received second display information to the LED array 5 one by one according to the display refresh rate, so that the LED array 5 displays the second display information.

The LED display method provided by the present application is applied in the LED display system. The working principle of the LED display method provided in the embodiment of the present application is the same as that of the LED display system provided in the first aspect above. Then discuss it in detail.

In some embodiments, the construction steps of the second-level cache 4 include:

The number of frames and the frame structure of the second-level cache 4 are configured according to the LED array 5 .

It can be seen from the above that the LED display method provided by this application directly writes the first display information into the first-level cache 2, since the firmware of this application is only used to control the transmission device 3 based on the display refresh rate of the LED array 5 The first-level cache 2 obtains the second display information and writes it into the second-level cache 4, and the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache 2 and the transmission bandwidth of the first-level cache 2. The data is sent to the LED array 5 frame by frame. Therefore, compared with the prior art, this method can effectively reduce the data processing amount of the firmware, thereby effectively avoiding that the communication bandwidth of the firmware is limited due to the large amount of data generated by the LED display system at one time. Occupied, the LED shows the situation that the system is stuck.

It can be seen from the above that the LED display system, device and method provided by the present application directly write the first display information into the first-level cache 2, since the firmware of the present application is only used to control the transmission according to the display refresh rate of the LED array 5 The device 3 obtains the second display information based on the first-level cache 2 and writes it into the second-level cache 4, while the firmware of the prior art needs as the transmission bandwidth for writing the first display information into the first-level cache 2 and the first-level The data in the cache 2 is sent to the LED array 5 frame by frame, so compared with the prior art, this system can effectively reduce the amount of data processing by the firmware, thereby effectively avoiding the occurrence of problems caused by the LED display system that generates a large amount of data at one time. The communication bandwidth is fully occupied, and the LED shows that the system is stuck.

In the embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the above units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or can be Integrate into another robot, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

In addition, the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be raised to one place, or may also be distributed to multiple network units . Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Furthermore, each functional module in each embodiment of the present application may be integrated to form an independent part, each module may exist independently, or two or more modules may be integrated to form an independent part.

In this document, relational terms such as first and second etc. are used only to distinguish one entity or operation from another without necessarily requiring or implying any such relationship between these entities or operations. Actual relationship or sequence.

The above descriptions are only examples of the present application, and are not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. An LED display system, the LED display system comprising:

a first display information transmitting module;

the first-level cache is constructed based on hardware, is electrically connected with the first display information sending module and is used for caching the first display information sent by the first display information sending module;

one end of the transmission equipment is electrically connected with the first-level cache;

the second-level cache constructed based on the firmware is electrically connected with the memory for storing the firmware at the other end of the transmission device;

the LED array is electrically connected with the memory for storing the firmware and is used for displaying second display information;

the firmware is used for controlling the transmission equipment to acquire second display information based on the first-level cache according to the display refresh rate of the LED array and writing the second display information into the second-level cache, wherein the second display information is one frame of information in the first display information.

2. The LED display system of claim 1, wherein the transfer device is a DMA transfer device.

3. The LED display system of claim 1, wherein the second level buffer comprises a plurality of buffer units, each buffer unit for buffering a second display information, and wherein the firmware controlling the transmission device to obtain the second display information based on the first level buffer and write the second display information into the second level buffer according to the display refresh rate of the LED array comprises:

judging whether the second display information in the current cache unit is displayed or not;

if yes, controlling the transmission equipment to acquire corresponding second display information in the next display stage based on the first-stage cache according to the display refresh rate of the LED array, and writing the second display information into a current cache unit.

4. The LED display system of claim 3, wherein the process of the firmware controlling the transmitting device to obtain second display information based on the first level cache and write to the second level cache according to the display refresh rate of the LED array further comprises:

and if the second display information in the current caching unit is not displayed, controlling the second-level cache to output the cached second display information so that the LED array displays the second display information.

5. The LED display system of claim 3, wherein said controlling the transmission device to obtain the corresponding second display information in the next display stage based on the first level buffer and write the second display information into the current buffer unit according to the display refresh rate of the LED array comprises:

judging whether all cache units are updated;

if not, judging whether the corresponding second display information in the next display stage can be transmitted or not;

and if the corresponding second display information in the next display stage can be transmitted, controlling the transmission equipment to acquire the second display information based on the first-level cache according to the display refresh rate of the LED array, and writing the second display information into the current cache unit.

6. The LED display system of claim 3, wherein the firmware is further configured to, when the transmission device acquires or writes the second display information, write the error information in the buffer unit corresponding to the second display information.

7. A LED display system according to claim 3, wherein the firmware is further adapted to control the transmitting device to retransmit the second display information at a next writing cycle when the transmitting device acquires or writes the second display information error.

8. An LED display device, comprising firmware comprising:

the acquisition module is used for acquiring the display refresh rate of the LED array;

the frame number and the frame structure of the second-level buffer memory which is built in advance are matched with the LED array;

the triggering module is used for generating triggering information according to the display refresh rate so that the transmission equipment obtains second display information based on the first-level cache and writes the second display information into the second-level cache, wherein the second display information is one frame of information in the first display information, and the triggering module is also used for controlling the second-level cache to send the received second display information to the LED arrays one by one according to the display refresh rate so that the LED arrays display the second display information.

9. The LED display method is characterized by being applied to an LED display system, wherein the LED display system comprises a first display information sending module, a first-level buffer memory constructed based on hardware, transmission equipment, a second-level buffer memory constructed based on firmware and an LED array, the first-level buffer memory is electrically connected with the first display information sending module, the first-level buffer memory is used for buffering first display information sent by the first display information sending module, two ends of the transmission equipment are respectively electrically connected with the first-level buffer memory and a memory for storing the firmware, the LED array is electrically connected with the memory for storing the firmware, the LED array is used for displaying second display information, and the LED display method comprises the following steps:

acquiring a display refresh rate of the LED array;

generating trigger information according to the display refresh rate, so that the transmission equipment obtains second display information based on the first-level buffer memory and writes the second display information into the second-level buffer memory, wherein the second display information is one frame of information in the first display information;

and controlling the second-level cache to send the received second display information to the LED array one by one according to the display refresh rate so as to enable the LED array to display the second display information.

10. The LED display method of claim 9, wherein the step of constructing the second level buffer comprises:

and configuring the frame number and the frame structure of the second-level buffer according to the LED array.