CN113948037A

CN113948037A - Data processing method, device and system, LED driving chip and controller

Info

Publication number: CN113948037A
Application number: CN202111216519.XA
Authority: CN
Inventors: 林斌斌; 黄梅芳
Original assignee: Shenzhen Jueming Technology Co ltd
Current assignee: Shenzhen Jueming Technology Co ltd
Priority date: 2020-10-19
Filing date: 2021-10-19
Publication date: 2022-01-18
Anticipated expiration: 2041-10-19
Also published as: CN112382230A; CN113948037B

Abstract

The application relates to a data processing method, a data processing device, a data processing system, an LED driving chip and a controller. The data processing method comprises the following steps: acquiring target data and judging whether the target data carries a curing instruction or not; if the target data carries the curing instruction, responding to the curing instruction to enter a curing mode; and receiving display data in the curing mode, and storing the received display data in a memory configured by the LED driving chip, wherein the display data is used for indicating the LED driving chip to drive the corresponding LED pixel to emit light when displaying. The data processing method can reduce the power consumption of the LED display screen during displaying.

Description

Data processing method, device and system, LED driving chip and controller

Technical Field

The present application relates to the field of LED display technologies, and in particular, to a data processing method, apparatus, system, LED driving chip, and controller.

Background

With the development of LED display technology, LED display screens have emerged. The LED display screen displays by driving corresponding pixels to emit light through a plurality of LED driving chips.

At present, in a common LED display screen, when the LED display screen needs to display, display data is output by a computer, the display data is forwarded to each LED driving chip by a multimedia controller, and then the LED driving chip receives the display data forwarded by the controller in real time to drive the corresponding LED pixel to emit light, thereby realizing the display of the LED display screen.

However, the applicant finds that the current LED display screen consumes very large power during displaying.

Disclosure of Invention

As described in the background art, the LED display panel in the prior art has a problem of very large power consumption during displaying, and as a result of research by the inventors, the problem arises because the number of LED driving chips that can be driven by a single multimedia controller is limited, the number of LED driving chips that can be controlled by one controller is generally not more than 1000, and for a typical screen, a 1080P screen requires thousands of controllers, so that the LED display panel has very many controllers operating during displaying, and display data needs to be transmitted at high speed to reduce display delay, which results in very large power consumption during displaying of the LED display panel.

In view of the above, it is necessary to provide a data processing method, device, system, LED driving chip and controller capable of reducing power consumption of the LED display screen during displaying.

A data processing method is applied to an LED driving chip and comprises the following steps:

acquiring target data and judging whether the target data carries a curing instruction or not;

if the target data carries the curing instruction, responding to the curing instruction to enter a curing mode;

and receiving display data in the curing mode, and storing the received display data in a memory configured by the LED driving chip, wherein the display data is used for indicating the LED driving chip to drive the corresponding LED pixel to emit light when displaying.

In one embodiment, the storing the received display data to the memory of the LED driving chip configuration includes:

intercepting current-level display data corresponding to the LED driving chip from the received display data;

and storing the current-stage display data into the storage area.

In one embodiment, the method further comprises:

and if the target data do not carry the curing instruction, reading prestored target display data from the storage area based on the target data so as to instruct the LED driving chip to drive the corresponding LED pixel to emit light.

In one embodiment, the reading of the pre-stored target display data from the storage area based on the target data includes:

extracting the video stream identifier and the frame number identifier carried by the target data;

searching display data corresponding to the video stream identifier from the storage area according to the video stream identifier;

and reading target display data corresponding to the frame number identification in the display data according to the frame number identification.

In one embodiment, the determining whether the target data carries a curing instruction includes:

judging whether the target data has a solidified check code;

and if the target data has the curing check code, determining that the target data carries the curing instruction.

In one embodiment, the intercepting the current-level display data corresponding to the LED driving chip from the received display data includes:

determining a preset data length corresponding to the current stage display data;

and intercepting data matched with the preset data length from the data head of the display data as the current-stage display data.

In one embodiment, the method further comprises:

acquiring a first gray scale original value of the LED pixel during display;

searching gamma correction information stored in advance from the memory, wherein the gamma correction information is received by the LED driving chip in the curing mode and is stored in the memory to be obtained;

and correcting the first gray scale original value according to the gamma correction information to obtain a target gamma correction value, so as to adjust the display brightness of the LED pixel through the target gamma correction value.

In one embodiment, the gamma correction information includes a correction difference value group including mth-order correction difference values corresponding to different gray-scale original values, respectively, the mth-order correction difference value is obtained by calculating a difference value between gamma correction values, M is a natural number greater than 1, and the correcting the first gray-scale original value according to the gamma correction information includes:

obtaining at least one Mth order correction difference value associated with the first gray scale original value from the correction difference value group;

and performing gamma correction according to at least one Mth-order correction difference value associated with the first gray scale original value.

In one embodiment, the obtaining at least one mth order correction difference value associated with the first gray scale original value corresponding to the target display data from the correction difference value set includes:

determining a second gray scale original value less than or equal to the first gray scale original value;

identifying M-th order correction difference values corresponding to all the second gray-scale original values from the correction difference value group;

respectively corresponding M-th order correction difference values of all the second gray scale original values to serve as M-th order correction difference values associated with the first gray scale original values;

the gamma correction according to at least one Mth order correction difference value associated with the first gray scale original value comprises the following steps:

and performing M-order accumulation on at least one M-order correction difference value associated with the original value of the first gray scale.

A method of data processing, the method comprising:

sending target data carrying a curing instruction to at least one LED driving chip, wherein the curing instruction is used for indicating the LED driving chip to enter a curing mode;

and sending display data to the LED driving chip so that the LED driving chip receives the display data in a curing mode and stores the received display data to a memory configured by the LED driving chip, wherein the display data is used for indicating the LED driving chip to drive the corresponding LED pixel to emit light when displaying.

A data processing device is applied to an LED driving chip and comprises:

the decoding module is used for acquiring target data and judging whether the target data carries a curing instruction or not;

and the storage module is used for responding to the curing instruction to enter a curing mode to receive display data and storing the received display data to a memory configured by the LED driving chip if the target data carries the curing instruction, and the display data is used for indicating the LED driving chip to drive the corresponding LED pixel to emit light during display.

A data processing apparatus, the apparatus comprising:

the system comprises a target data sending module, a data processing module and a data processing module, wherein the target data sending module is used for sending target data carrying a curing instruction to at least one LED driving chip, and the curing instruction is used for indicating the LED driving chip to enter a curing mode;

the display data sending module is used for sending display data to the LED driving chip so that the LED driving chip receives the display data in a curing mode and stores the received display data to a memory configured by the LED driving chip, and the display data is used for indicating the LED driving chip to drive the corresponding LED pixel to emit light when displaying.

An LED driving chip comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method when executing the computer program.

A controller comprising a memory storing a computer program and a processor implementing the steps of the method described above when the processor executes the computer program.

A display device, comprising:

the LED driving chip is used for acquiring target data and judging whether the target data carries a curing instruction or not, if the target data carries the curing instruction, the LED driving chip responds to the curing instruction to enter a curing mode, receives display data in the curing mode and stores the received display data into a memory configured by the LED driving chip, and the display data is used for indicating the LED driving chip to drive a corresponding LED pixel to emit light when displaying;

the controller is used for sending target data to at least one LED driving chip, wherein the target data carries a curing instruction and sends display data to the LED driving chip so that the LED driving chip receives the display data in a curing mode.

A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.

According to the data processing method, the data processing device, the data processing system, the LED driving chip and the controller, target data are obtained, and whether the target data carry a curing instruction is judged; if the target data carries the curing instruction, responding to the curing instruction to enter a curing mode; the display data are received in the curing mode and stored in the memory configured to the LED driving chip, and the display data are pre-stored in the memory configured to the LED driving chip, so that when the display is performed, the LED driving chip can drive the corresponding LED pixel to emit light according to the target display data only by reading the pre-stored target display data in the configured memory, and the display of the LED display screen is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1A is a schematic structural diagram of an LED driving circuit according to an embodiment;

FIG. 1B is a diagram of an application environment, according to an embodiment;

FIG. 1C is a schematic diagram of another application environment provided by one embodiment;

FIG. 2 is a flow diagram that illustrates a method for data processing, according to an embodiment;

FIG. 3 is a flow diagram that illustrates another data processing method, according to an embodiment;

FIG. 4 is a flow diagram that illustrates another data processing method, according to an embodiment;

FIG. 5 is a flow diagram that illustrates another data processing method, according to an embodiment;

FIG. 6 is a flow diagram that illustrates another data processing method, according to an embodiment;

FIG. 7 is a schematic diagram of a gamma correction process for an LED pixel according to an embodiment;

FIG. 8 is a block diagram of a data processing apparatus according to an embodiment;

fig. 9 is a schematic structural diagram of a data processing apparatus according to an embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an LED driving circuit according to an embodiment. In one embodiment, as shown in fig. 1, the LED driving circuit includes a memory 130 and at least one LED driving chip 120. Wherein:

the memory 130 is used to store display data. Each of the LED driving chips 120 is configured with the memory 130, and each of the LED driving chips 120 is configured to store the received display data into the configured memory 130, and read pre-stored target display data from the configured memory 130 during displaying, so as to drive the corresponding LED pixel to emit light according to the target display data.

In the present embodiment, the LED driving chip 120 is configured to receive the display data and store the received display data in the configured memory 130. When display is needed, the pre-stored target display data is directly read from the configured memory 130, and then the corresponding LED pixels can be driven to emit light according to the target display data, so that the display screen plays video pictures. Optionally, the display data of this embodiment is all frame data of one video, that is, all frame data of one video is stored in the configured memory 130 by the LED driving chip 120, so that when one video needs to be played, the pre-stored display data is directly read, and thus the corresponding pixel is driven to emit light according to the read display data, and each LED driving chip 120 of the LED driving circuit synchronizes this operation, thereby completing the display of one video by the display screen.

It should be noted that, in the at least one LED driving chip 120 of the present embodiment, each LED driving chip 120 may be individually configured with one memory 130, or a plurality of LED driving chips 120 may be configured with one memory 130 together, which is not limited herein.

In one embodiment, the memory 130 includes a plug-in memory 130 externally hung on the LED driving chip 120 and/or a built-in memory 130 built in the LED driving chip 120. In the present embodiment, specifically, when the memory 130 includes the built-in memory 130 built in the LED driving chip 120, each LED driving chip 120 is individually configured with one memory 130. When the memory 130 includes the external memory 130 externally connected to the LED driving chip 120, each LED driving chip 120 may be configured with one external memory 130 separately, or a plurality of LED driving chips 120 may be configured with one external memory 130 together, which is not limited herein. The built-in means that the LED driving chip 120 is manufactured with the memory 130, and the plug-in means that the memory 130 and the LED driving chip 120 are packaged together, and the package includes various integrated circuit packages.

In the present embodiment, the memory 130 includes an NVM (non-volatile memory) and/or a volatile memory. Preferably, the memory 130 of the present embodiment comprises an NVM memory. It is understood that when the memory 130 is an NVM memory, the stored display data may still exist even after power is turned off, and all the transmission devices for the display data may be removed after the curing is completed.

Referring to fig. 1B, fig. 1B is a schematic diagram of an application environment of an LED driving circuit according to an embodiment. As shown in fig. 1B, the controller 110 communicates with the first LED driving chip 120, the LED driving chips 120 are sequentially cascaded, and the cascaded LED driving chips 120 communicate with each other. The controller 110 forwards the data to the first LED driving chip 120, and the first LED driving chip 120 forwards the data further downwards until the nth LED driving chip 120 receives the data. After receiving the data, each LED driving chip 120 stores the data in the configured memory 130. The cascaded LED driving chips 120 communicate with each other to perform synchronous display during display.

Referring to fig. 1C, fig. 1C is a schematic diagram of an application environment of another LED driving circuit according to an embodiment. As shown in fig. 1C, wherein the controller 110 is in communication with each LED driving chip 120. The controller 110 sequentially forwards the data to each of the LED driving chips 120, and each of the LED driving chips 120 stores the data in the configured memory 130 after receiving the data. The LED driving chips 120 are sequentially cascaded, and the cascaded LED driving chips 120 communicate with each other to perform synchronous display during display.

It is to be understood that the above application environments are only examples, and the actual application environment of the LED driving circuit of the present embodiment is not limited to the above application environments.

Referring to fig. 2, fig. 2 is a flowchart illustrating a data processing method according to an embodiment. In one embodiment, as shown in fig. 2, the method is applied to an LED driving chip as an example. A data processing method comprises the following steps:

step S210, target data is obtained, and whether the target data carries a curing instruction is judged.

The target data is data transmitted from the upper device. The target data is used for instructing the LED driving chip to store data or drive the corresponding LED pixel to emit light. The upper-level element can be a controller or a previous-level LED driving chip. Taking fig. 1B as an example, the upper-level element is the upper-level LED driving chip, taking fig. 1C as an example, the upper-level element is the controller, and the present embodiment does not limit the specific upper-level element. The curing instruction is an instruction carried in the target data, and the curing instruction is used for indicating the LED driving chip to enter a curing mode so that the LED driving chip stores the received display data in the curing mode. Specifically, after the LED driving chip obtains the target data, it is determined whether the target data carries a curing instruction, and if the target data carries the curing instruction, step S220 is executed.

In a possible embodiment, the determining whether the target data carries a curing instruction includes:

judging whether the target data has a solidified check code; and if the target data has the curing check code, determining that the target data carries the curing instruction.

The curing check code refers to a check code associated with the curing instruction. The form of the cured check code may be set according to the requirement, and the embodiment is not limited. For example, if "101010" is used as the solidification check code and the data header for which the target data is verified is "101010", the solidification mode is entered.

Step S220, if the target data carries the curing instruction, responding to the curing instruction and entering a curing mode.

The curing mode is a mode for curing data, and may be understood as a mode for storing received data.

Step S230, receiving display data in the curing mode, and storing the received display data in a memory configured to the LED driving chip, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light during displaying.

The display data is data for instructing the LED driving chip to drive the corresponding LED pixel to emit light, so that the LED display screen displays the light. The display data of the present embodiment is used for reading when display is required. Specifically, the display data of this embodiment may be all frame data of a segment of video. The memory of this embodiment may be a built-in memory built in the LED driving chip, or an external memory attached to the LED driving chip, which is not limited in this embodiment. Optionally, the memory of this embodiment may be an NVM (non-volatile memory) or a volatile memory, which is not limited herein. It is to be understood that the storage area of the present embodiment is not limited to the NVM memory and the volatile memory, as long as the function of storing display data can be realized. Preferably, the memory of the embodiment is an NVM, and because the NVM is used for storing data, the data can be not lost after power failure, and the memory supports over millions of erasing and programming.

Specifically, the LED driving chip receives data in the curing mode, and stores the display data in the configured memory after receiving the display data, so that the display data is read when the display is needed, and the corresponding LED pixels are driven to emit light, thereby realizing the display of the LED display screen.

It should be noted that the display data of this embodiment may be that the controller sends the target data together while sending the target data, and then the LED driving chip may receive the display data after entering the curing mode according to the target data, or may be that after the LED driving chip enters the curing mode according to the target mode, a curing completion instruction is fed back to the controller, and then the controller sends the display data to the LED driving chip that has entered the curing mode according to the curing completion instruction.

In this embodiment, after receiving the target data, if it is determined that the target data carries a curing instruction, the LED driving chip enters a curing mode, receives and stores the display data in the curing mode, when the LED display screen needs to display, the LED driving chip can directly read the pre-stored display data to drive the corresponding LED pixels to emit light, and then the LED display screen does not need to be controlled by the controller when displaying, and power consumption generated by the controller during working is not needed. In addition, it can be understood that, because the display data is stored in the storage area in advance, and is directly read for use during display, the problem that when the controller sends the display data in real time in the form of carrier signals, the carrier signals are interfered to cause display errors of the LED display, especially the problem that the screen of the LED display flickers during display is avoided, and the accuracy of the LED display screen during display is improved.

Referring to fig. 3, fig. 3 is a flow chart illustrating another data processing method according to an embodiment. This embodiment is a refinement of the above embodiment, and further refines the step of storing the received display data in the memory of the LED driving chip configuration. In one embodiment, as shown in fig. 3, another data processing method includes:

step S310, target data is obtained, and whether the target data carries a curing instruction or not is judged.

This step may refer to the description of any of the above embodiments, which is not repeated herein.

Step S320, if the target data carries the curing instruction, responding to the curing instruction to enter a curing mode.

Step S330, receiving display data in the curing mode, and intercepting current-level display data corresponding to the LED driving chip from the received display data, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light during display.

The current-level display data refers to display data corresponding to the current-level LED driving chip. Generally, an LED driving chip stores all display data, and extracts data required by a current stage from all display data to display the data when display is required. But in the step, the display data of the current level required by the current level is intercepted and then stored.

And step S340, storing the current-stage display data in the storage area.

In this step, when the stored data is the current-stage display data, the current-stage display data is directly read for display when the display is needed.

In this embodiment, when the display data is received in the curing mode, the current-level display data corresponding to the current-level LED driving chip in the display data is first captured, and only the current-level display data needs to be stored, so that the stored data is smaller, and the requirement of the storage space of the storage area can be reduced. In addition, because the stored data is the current-level display data, when the display is needed, the current-level display data is directly read for display, data extraction is not needed, the display time is shortened, and the display frame rate can be further improved.

In one possible embodiment, intercepting the current-level display data corresponding to the LED driving chip from the received display data includes:

determining a preset data length corresponding to the current stage display data; and intercepting data matched with the preset data length from the data head of the display data as the current-stage display data.

Specifically, the present embodiment is suitable for an application scenario in which display data is transmitted between LED driving chips in a cascade manner. The preset data length is the data length of the current stage display data. Specifically, since the data is forwarded by the cascaded LED driving chips, the data received by the LED driving chips is the sum of the current-stage display data and the subsequent-stage display data. Therefore, data matched with the preset data length is intercepted from the data head of the display data, namely the current-stage display data required by the current-stage LED driving chip.

In the embodiment, the data matched with the preset data length is intercepted from the data head of the display data to serve as the current-level display data, the mode of intercepting the current-level display data is simple and easy to operate, and the complexity of intercepting the current-level display data required by the current-level LED driving chip is reduced.

Referring to fig. 4, fig. 4 is a flow chart illustrating another data processing method according to an embodiment. The embodiment is further detailed in the above embodiment, and is suitable for the case that the target data does not carry the solidification instruction. In one embodiment, as shown in fig. 4, another data processing method includes:

and S410, acquiring target data and judging whether the target data carries a curing instruction.

Step S420, if the target data carries the curing instruction, responding to the curing instruction to enter a curing mode.

Step S430, receiving display data in the curing mode, and storing the received display data in a memory configured to the LED driving chip, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light during displaying.

Step S440, if the target data does not carry the curing instruction, reading pre-stored target display data from the storage area based on the target data to instruct the LED driving chip to drive the corresponding LED pixel to emit light.

The target display data is display data corresponding to an image or video to be displayed. In this step, if the target data does not carry the curing instruction, the prestored target data is read from the storage area based on the target data, so that the LED driving chip drives the corresponding LED pixel to emit light according to the target display data, thereby realizing the display of the LED display screen.

It should be noted that, if the LED driving chip automatically switches to the synchronous mode after the display data is stored, the target data does not carry the curing instruction, and what instruction may not be carried; if the LED driving chip is kept in the curing mode after the display data is stored, the target data does not carry a curing instruction, or carries a synchronous instruction, so that the LED driving chip is instructed to be switched from the curing mode to the synchronous mode. The synchronous mode is a mode in which the LED driving chip drives the corresponding LED pixel to emit light.

In one possible embodiment, reading pre-stored target display data from the storage area based on the target data includes:

extracting the video stream identifier and the frame number identifier carried by the target data; searching display data corresponding to the video stream identifier from the storage area according to the video stream identifier; and reading target display data corresponding to the frame number identification in the display data according to the frame number identification.

In this embodiment, the video stream identifier refers to an identifier of a video to be played. The frame number identifier is an identifier of one frame of a video to be played. In this embodiment, a plurality of video streams are stored in the storage area in advance, and then the target display data can be searched from the storage area according to the video stream identifier and the frame number identifier carried by the target data, so as to instruct the LED driving chip to drive the corresponding LED pixel to emit light.

For example, the target data is 00100001, i.e. 00001 th frame of 001 video is played, so the full-screen LED driver chip will perform synchronous playing according to the video stream identifier and the frame number identifier carried by the target data.

Referring to fig. 5, fig. 5 is a flow chart illustrating another data processing method according to an embodiment. In one embodiment, as shown in fig. 5, the method is applied to the controller and/or the LED driving chip for illustration. The data processing method comprises the following steps:

step S510, sending target data carrying a curing instruction to at least one LED driving chip, where the curing instruction is used to instruct the LED driving chip to enter a curing mode.

Step S520, sending display data to the LED driving chip, so that the LED driving chip receives the display data in the curing mode, and stores the received display data in a memory configured to the LED driving chip, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light during display.

In this embodiment, specifically, the controller sends target data carrying a curing instruction to at least one LED driving chip. And the LED driving chip acquiring the target data enters a curing mode after judging that the target data carries a curing instruction. At this time, the controller sends display data to the LED driving chip entering the curing mode. The LED driving chip stores the received display data in the configured memory after receiving the display data in the curing mode.

It can be understood that, when the target data is mutually transmitted between the LED driving chips, the method of the present embodiment may also be applied to an upper-level LED driving chip that transmits the target data to the LED driving chip.

Referring to fig. 6, fig. 6 is a flow chart illustrating another data processing method according to an embodiment. In one embodiment, as shown in fig. 6, another data processing method includes:

step S610, sending target data carrying a curing instruction to at least one LED driving chip, wherein the curing instruction is used for indicating the LED driving chip to enter a curing mode.

Step S620, sending display data to the LED driving chip, so that the LED driving chip receives the display data in the curing mode, and stores the received display data in a memory configured to the LED driving chip, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light when displaying.

Step S630, determining a target LED driving chip in at least one LED driving chip, wherein the target LED driving chip is an LED driving chip with abnormal display.

The target LED driving chip is a driving chip displaying abnormity. Specifically, in the process of receiving display data, due to interference of a carrier signal, an error code may be generated, so that the received display data is inaccurate, and then the LED driving chip receiving the inaccurate display data cannot be normally driven, so that the LED display screen may generate a screen flashing phenomenon.

And step 640, resending the target data carrying the curing instruction to the target LED driving chip so that the target LED driving chip receives the display data again in a curing mode.

In the step, the target data carrying the curing instruction is sent to the target LED driving chip with abnormal display again, so that the target LED driving chip receives the display data again, and the phenomenon of screen flashing of the LED display screen is avoided. Specifically, the abnormal target LED driving chip may be an LED driving chip corresponding to a screen flashing position found by a user when the user uses the LED display screen, so that the abnormal LED driving chip is input into the controller, and the controller retransmits the target data carrying the curing instruction according to a chip address of the target LED driving chip.

For example, there are N LED driving chips in total, where N is a natural number of 1 or more. Then (24bit) f0f0f0 × N + (16bit) a1a1 is sent, we set that f0f0f0 and a1a1 can complete verification and f0f0f0 is an instruction for the LED driving chips to enter the curing mode, and then all N LED driving chips enter the curing mode. If (24bit) f0f0f0+ (24bit)000000 x (N-1) + (16bit) a1a1 is sent, only the first 24bit completes the instruction verification, and other data cannot be completed, only the first LED driving chip enters the curing mode.

In this embodiment, if the LED display screen displays an abnormal condition, for example, a screen flashing phenomenon occurs, the abnormal target LED driving chip is determined, so that the display data is sent to the target LED driving chip independently, and the normal LED driving chips do not send the display data, so that the display data is prevented from being rewritten by all the LED driving chips.

In some exemplary cases, in the process of driving the corresponding LED pixel to emit light by the LED driving chip according to the target display data, the display effect of the LED pixel is not good due to different brightness of the surrounding environment, and therefore gamma correction needs to be performed on the LED pixel.

Referring to fig. 7, fig. 7 is a schematic flowchart illustrating gamma correction on an LED pixel according to an embodiment. In one embodiment, as shown in fig. 7, the data processing method further includes steps 710 to 730.

And 710, acquiring a first gray scale original value of the LED pixel during display.

The first gray scale original value refers to a current gray scale original value of the LED pixel. Specifically, the first gray scale original value may be understood as a gray scale original value to be corrected, or may be understood as an initial value. Specifically, the original value of the first gray level is related to bit data. For example, if the data to be corrected is 8-bit data, the first original value is any one of values from 0 to 255; if 16-bit data is to be corrected, the first original value is any one of 0-65535.

Step 720, searching gamma correction information stored in advance from the memory, wherein the gamma correction information is received by the LED driving chip in the curing mode and is stored in the memory to be obtained.

Wherein gamma correction information refers to information for correcting the original value of the first gray scale. Optionally, the gamma correction information includes mapping elements of gamma correction values. Specifically, the gamma correction information of the present embodiment is received by the LED driving chip in the curing mode and stored in the memory. It should be noted that, the scheme for receiving gamma correction information by the LED driving chip in the curing mode may refer to the scheme for receiving display data by the LED driving chip in the curing mode, which is not described in detail in this embodiment.

And step 730, correcting the first gray scale original value according to the gamma correction information to obtain a target gamma correction value, so as to adjust the display brightness of the LED pixel through the target gamma correction value.

Wherein, the target gamma correction value refers to the final correction value after the correction is completed. In this step, gamma correction is performed according to the correction difference set, so as to obtain a target gamma correction value corresponding to the first original value.

According to the technical scheme of the embodiment, the display effect of the LED pixel can be improved by correcting the original value of the first gray scale of the LED pixel during display. In addition, because the gamma correction information comprises the mapping element of the gamma correction value, the gamma correction value does not need to be calculated by a correction algorithm, and the system resource is reduced.

In one embodiment, the gamma correction information includes a correction difference value group including mth-order correction difference values respectively corresponding to different gray-scale original values, the mth-order correction difference value is obtained by calculating a difference value between gamma correction values, M is a natural number of 1 or more, and the correcting the first gray-scale original value according to the gamma correction information includes:

obtaining at least one Mth order correction difference value associated with the first gray scale original value from the correction difference value group; and performing gamma correction according to at least one Mth-order correction difference value associated with the first gray scale original value.

The correction difference set refers to a difference set stored in advance as a parameter for determining a final correction value. Specifically, the correction difference set includes mth order correction differences corresponding to different original values respectively. The different original values of this embodiment relate to bit data. For example, if 8-bit data is to be corrected, the different original values are a set of values from 0 to 255. The mth order correction difference values corresponding to different original values respectively mean that each original value corresponds to an mth order correction difference value. In the present embodiment, M is a natural number of 1 or more. Specifically, the correction difference values corresponding to different original values have the same order. For example, each original value corresponds to a 2 nd order correction difference. In the present embodiment, the order refers to the order of the difference. Optionally, when M is greater than or equal to 2, the mth order correction difference is a difference between the mth-1 order correction differences; when M is 1, the 1 st order correction difference is a difference between gamma correction values. For example, when the order is 1, the 1 st order correction difference is the difference between two adjacent gamma correction values; when the order is 2, the 2 nd order correction difference is the difference of two adjacent 1 st order correction differences; when the order is 3, the 3 rd order correction difference is the difference of the 2 nd order correction difference, and so on.

Wherein the first gamma correction value refers to a final correction value at which the correction is completed. In this step, gamma correction is performed according to the correction difference set, so as to obtain a first gamma correction value corresponding to the first original value.

Illustratively, a gamma correction with 8bit data gives 16bit data, and a gamma correction factor of 2.2 is illustrated. As shown in table 1, table 1 provides a1 st order correction difference, a 2 nd order correction difference, a 3 rd order correction difference and a first gamma correction value corresponding to a part of the first original values of 8-bit data.

First original value	First gamma correction value	1 st order correction difference	2 nd order correction difference	3 rd order correction difference
					0	0	0	0	0
1	0.33	0.33	0.33	0.33
					2	1.53	1.2	0.86	0.53
3	3.73	2.2	1.01	0.14
					4	7.02	3.29	1.09	0.09
5	11.48	4.45	1.16	0.07
					6	17.14	5.66	1.21	0.05
7	24.06	6.92	1.26	0.05
					8	32.28	8.22	1.3	0.04

TABLE 1

As can be seen from table 1, the mth order correction difference values corresponding to different original values are smaller than the gamma correction values corresponding to different original values, so that the occupied storage space is smaller, and the occupied resources are also smaller.

Since the correction difference group includes mth order correction differences corresponding to different original values, a part of the mth order correction differences may be unrelated to the first gamma correction value to be determined, and therefore at least one mth order correction difference associated with the first original value needs to be obtained from the correction difference group. It should be noted that the mth order correction difference is related to the value of the first original value.

According to the technical scheme of the embodiment, the correction difference value group is stored, namely the mth order correction difference value in the correction difference value group is stored, and the mth order correction difference value in the correction difference value group is obtained by calculating the difference value between gamma correction values, so that the stored value is smaller, the occupied storage space is smaller, and the reduction of the occupied resources of gamma correction is realized.

In one embodiment, obtaining at least one mth order correction difference value associated with the first gray scale original value corresponding to the target display data from the correction difference value set includes:

determining a second gray scale original value less than or equal to the first gray scale original value; identifying M-th order correction difference values corresponding to all the second gray-scale original values from the correction difference value group; and respectively corresponding M-th order correction difference values of all the second gray scale original values to serve as M-th order correction difference values associated with the first gray scale original values.

Wherein the second original value refers to one of the different original values, e.g. one of 0-255. The second original value in this embodiment is less than or equal to the first original value. For example, the first original value is 2, and the second original value includes 0, 1, and 2.

Since the correction difference group includes mth order correction differences corresponding to different original values, the mth order correction differences corresponding to all the second original values can be identified from the correction difference group. For example, if the second original value includes 0, 1 and 2, the mth order correction difference corresponding to the second original value 0, the mth order correction difference corresponding to the second original value 1 and the mth order correction difference corresponding to the second original value 2 are identified from the correction difference group.

It should be noted that, when the original value is 0, the corresponding mth order correction difference is 0.

In one embodiment, gamma correction according to at least one mth order correction difference value associated with the first gray scale original value includes:

And performing M-order accumulation on at least one M-order correction difference value associated with the first original value, which is equivalent to performing M-order accumulation on M-order correction difference values respectively corresponding to all second original values. It will be appreciated that since the mth order corrected difference is the difference between the mth-1 order corrected differences, the mth order accumulation can be understood as the process of reverse accumulation.

Specifically, regardless of the number of M, the 1 st order correction difference can be always determined from the mth order correction difference, and the first gamma correction value can be determined since the 1 st order correction difference is a difference between the gamma correction values.

With continued reference to table 1, for example, assuming that the first original value is 2 and M is 2, the second original value includes 0, 1, and 2. Then all second original values correspond to order 2 correction differences comprising 0, 0.33 and 0.86, respectively. Then the accumulation of order M at this time is expressed as: 0.33+0.33+0.86 ═ 1.53. At this point, it is determined that the first gamma correction value corresponding to the first original value 2 is 1.53.

TABLE 1

It should be understood that although the various steps in the flowcharts of fig. 2-7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-7 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a data processing apparatus according to an embodiment. In one embodiment, as shown in fig. 8, taking the application of the apparatus to an LED driving chip as an example for explanation, a data processing apparatus is provided, which includes a decoding module 810 and a storage module 820, wherein:

the decoding module 810 is configured to obtain target data and determine whether the target data carries a curing instruction;

a storage module 820, configured to, if the target data carries the curing instruction, respond to the curing instruction to enter a curing mode to receive display data, and store the received display data in a memory configured in the LED driving chip, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light during display.

In one embodiment, the storage module 820 includes an intercepting unit and a storage unit, wherein the intercepting unit is configured to intercept the current-level display data corresponding to the LED driving chip from the received display data; the storage unit is used for storing the current-level display data to the storage area.

In an embodiment, the apparatus further includes a display module, where the display module is configured to read pre-stored target display data from the storage area based on the target data if the target data does not carry the curing instruction, so as to instruct the LED driving chip to drive the corresponding LED pixel to emit light.

In one embodiment, the display module includes an extraction unit, a search unit, and a display unit, where the extraction unit is configured to extract a video stream identifier and a frame number identifier carried by the target data; the searching unit is used for searching the display data corresponding to the video stream identifier from the storage area according to the video stream identifier; and the display unit is used for reading the target display data corresponding to the frame number identification in the display data according to the frame number identification.

In one embodiment, the decoding module 810 is specifically configured to determine whether the target data has a solidified check code; and if the target data has the curing check code, determining that the target data carries the curing instruction.

In one embodiment, the intercepting unit is specifically configured to determine a preset data length corresponding to the current-stage display data; and intercepting data matched with the preset data length from the data head of the display data as the current-stage display data.

In one embodiment, the device further comprises an acquisition module, a search module and a correction module, wherein the acquisition module is used for acquiring a first gray scale original value of the LED pixel when the LED pixel is displayed; the searching module is used for searching gamma correction information which is stored in advance from the memory, and the gamma correction information is received by the LED driving chip in the curing mode and is stored in the memory to be obtained; the correction module is used for correcting the first gray scale original value according to the gamma correction information to obtain a target gamma correction value, and the display brightness of the LED pixel is adjusted through the target gamma correction value.

In one embodiment, the gamma correction information includes a correction difference value group including mth order correction difference values corresponding to different gray scale original values, the mth order correction difference value is obtained by calculating a difference value between gamma correction values, M is a natural number greater than 1, and the correction module includes an acquisition unit and a correction unit; the acquisition unit is used for acquiring at least one Mth-order correction difference value associated with the first gray-scale original value from the correction difference value group; the correction unit is used for carrying out gamma correction according to at least one Mth-order correction difference value associated with the first gray scale original value.

In one embodiment, the obtaining unit is specifically configured to determine a second grayscale original value that is less than or equal to the first grayscale original value; identifying M-th order correction difference values corresponding to all the second gray-scale original values from the correction difference value group; respectively corresponding M-th order correction difference values of all the second gray scale original values to serve as M-th order correction difference values associated with the first gray scale original values; the correction unit is specifically configured to perform M-order accumulation on at least one mth-order correction difference value associated with the first gray-scale original value.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a data processing apparatus according to an embodiment. In one embodiment, as shown in fig. 9, taking the application of the device to a controller and/or an LED driving chip as an example for explanation, there is provided a data processing device comprising: a target data sending module 910 and a display data sending module 920, wherein:

the target data sending module 910 is configured to send target data carrying a curing instruction to at least one LED driving chip, where the curing instruction is used to instruct the LED driving chip to enter a curing mode;

the display data sending module 920 is configured to send display data to the LED driving chip, so that the LED driving chip receives the display data in the curing mode, and stores the received display data in a memory configured to the LED driving chip, where the display data is used to instruct the LED driving chip to drive a corresponding LED pixel to emit light when displaying.

For specific limitations of the data processing apparatus, reference may be made to the above limitations of the data processing method, which are not described herein again. The various modules in the data processing apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent of a processor in the display device, and can also be stored in a memory in the display device in a software form, so that the processor can call and execute operations corresponding to the modules. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In one embodiment, there is provided an LED driver chip comprising a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method of any of the above embodiments when executing the computer program.

In one embodiment, a controller is provided comprising a memory storing a computer program and a processor implementing the steps of the method of any of the above embodiments when the processor executes the computer program.

In one embodiment, a display device is provided that includes an LED driving chip and a controller. Wherein:

the LED driving chip is used for acquiring target data and judging whether the target data carries a curing instruction or not, if the target data carries the curing instruction, the LED driving chip responds to the curing instruction to enter a curing mode, receives display data in the curing mode and stores the received display data in a memory configured by the LED driving chip, and the display data is used for indicating the LED driving chip to drive a corresponding LED pixel to emit light when displaying.

It can be understood that, the description of the LED driving chip and the controller may also refer to the description of any of the above embodiments, and the description of this embodiment is not repeated.

In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A data processing method is applied to an LED driving chip and comprises the following steps:

2. The method of claim 1, wherein storing the received display data to a memory of the LED driver chip configuration comprises:

and storing the current-stage display data into the storage area.

3. The method of claim 1, wherein the method further comprises:

4. The method of claim 3, wherein reading pre-stored target display data from the memory area based on the target data comprises:

5. A method of data processing, the method comprising:

6. A data processing device is characterized in that the device is applied to an LED driving chip and comprises:

7. A data processing apparatus, characterized in that the apparatus comprises:

8. An LED driver chip comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any one of claims 1-4.

9. A controller comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of claim 5 when executing the computer program.

10. A display device, comprising: