CN112951150B - Energy-saving method, device and equipment for LED display screen and storage medium - Google Patents
Energy-saving method, device and equipment for LED display screen and storage medium Download PDFInfo
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The application discloses an energy-saving method, device, equipment and storage medium for an LED display screen. The method comprises the following steps: collecting display data; updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals; and judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode. This application compares and can only trigger energy-conserving mode when next frame data is all zero data now, and this embodiment judges the signal pulse width of display data in each row drive signal in the shadow time that disappears, increases the number of times of opening of the energy-conserving mode of row drive module in the line scanning cycle to improve the energy-conserving efficiency of LED display screen.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to an energy-saving method, device, equipment and storage medium for an LED display screen.
Background
In recent years, in the field of LED display screens, LEDs are used as basic light emitting devices of various light emitting devices, and large-area display screens composed of dot matrix modules or pixel unit modules formed by LEDs have been rapidly grown as mainstream products of flat panel displays in short decades due to the characteristics of high reliability, long service life, strong environmental adaptability, high price-performance ratio, low use cost, and the like, and are widely applied in the field of information display.
With the continuous development of display technology, the requirements for display screens are higher and higher. In order to meet the requirement of low power consumption of a display screen, a data memory for caching 2 frames of display data is arranged in an LED driving chip in the current market, wherein one frame of display data is current display data, and the other frame of display data is next frame of display data. Although the power consumption can be reduced to a certain extent by the mode, the actual energy-saving effect is still not ideal.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The embodiment of the application aims to improve the energy-saving efficiency of the LED display screen by providing an energy-saving method, an energy-saving device, energy-saving equipment and a storage medium for the LED display screen.
The embodiment of the application provides an energy-saving method for an LED display screen, wherein the LED display screen comprises a line scanning module and a column driving module, the line scanning module is used for outputting a plurality of line scanning signals, the column driving module is used for outputting a plurality of column driving signals, and the method comprises the following steps:
collecting display data;
updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
and judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
In some embodiments, after the calculating the signal pulse width of the display data in each column driving signal of the next row at the blanking time, the method further includes:
and outputting a pulse width modulation signal corresponding to each column driving signal according to the calculated signal pulse width of the display data in each column driving signal.
In some embodiments, the determining, based on the signal pulse width, an operating mode of a driving circuit of a column driving module corresponding to each column driving signal, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the operating mode includes:
the following steps are performed for each column drive signal:
if the signal pulse width is zero, judging the signal is in an energy-saving mode;
and outputting an energy-saving signal to a driving circuit of the column driving module corresponding to the column driving signal, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode.
In some embodiments, the determining, based on the signal pulse width, an operating mode of a driving circuit of a column driving module corresponding to each column driving signal, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the operating mode includes:
the following steps are performed for each column drive signal:
if the signal pulse width is not zero, judging the signal pulse width to be in a normal driving mode;
and not outputting the energy-saving signal to the driving circuit of the column driving module corresponding to the column driving signal, and driving the driving circuit of the column driving module corresponding to the column driving signal to normally work according to the normal driving mode.
In some embodiments, the LED display screen energy saving method further comprises:
and if the signal pulse width is zero in the preset time range, outputting an energy-saving signal to a driving circuit of a column driving module and a row scanning module corresponding to the column driving signal, adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode, and adjusting the row scanning module to pause.
In some embodiments, the signal pulse width is a low level signal pulse width.
In some embodiments, the display data is grayscale data.
This application still provides a LED display screen economizer, includes:
the acquisition module is used for acquiring display data;
the calculation module is used for updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
and the working mode adjusting module is used for judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
The application also provides an LED display screen energy-saving device which comprises a processor, a memory electrically connected with the processor and an LED display screen energy-saving program stored in the memory and capable of running on the processor; the LED display screen energy-saving program realizes the steps of the LED display screen energy-saving method when being executed by the processor.
The present application also proposes a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps in the LED display energy saving method as described.
The method comprises the steps of judging the signal pulse width of display data in each column driving signal in a shadow eliminating time period, judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode. Therefore, compared with the prior art that the energy-saving mode can be triggered only when the next frame of data is all-zero data, the embodiment judges the signal pulse width of the display data in each column driving signal within the shadow eliminating time, and enables the driving circuit of the corresponding column driving module with the signal pulse width of zero to enter the energy-saving mode, so that the starting times of the energy-saving mode of the column driving module within the line scanning period are increased, and the energy-saving efficiency of the LED display screen is improved.
Drawings
FIG. 1 is a hardware block diagram of an embodiment of an LED display screen energy saving device of the present application;
FIG. 2 is a block flow diagram of an embodiment of an energy saving method for an LED display screen according to the present application;
FIG. 3 is a block flow diagram of one embodiment of step 100 of FIG. 2;
FIG. 4 is a block flow diagram illustrating an embodiment of steps 300 of an energy saving method for an LED display screen according to the present application;
FIG. 5 is a block flow diagram illustrating a further embodiment of the steps 300 of the LED display energy saving method of the present application;
FIG. 6 is a block flow diagram of another embodiment of an LED display screen energy saving method of the present application;
FIG. 7 is a block flow diagram of another embodiment of an LED display energy saving method of the present application;
fig. 8 shows row scan pulses for each row of a row scan period of one frame data;
FIG. 9 shows a first column signal pulse width and corresponding power save signal, and a sixteenth column signal pulse width and corresponding power save signal;
fig. 10 shows a case where the signal pulse widths of the display data are all zero in a preset time range;
fig. 11 is a schematic block diagram of an embodiment of an energy saving device for an LED display screen according to the present application.
Fig. 12 is a schematic diagram of an embodiment of a row scanning module and a column driving module according to the present application.
Detailed Description
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
With the continuous development of display technology, the requirements for display screens are higher and higher. In order to meet the requirement of low power consumption of a display screen, a data memory for caching 2 frames of display data is arranged in an LED driving chip in the current market, wherein one frame of display data is current display data, and the other frame of display data is next frame of display data. Although the power consumption can be reduced to a certain extent by the mode, the actual energy-saving effect is still not ideal.
Therefore, there is a need to improve the energy saving efficiency of LED display screens. In view of this, the present application provides an energy saving method, apparatus, device and storage medium for an LED display screen.
Referring to fig. 1, an LED display screen energy saving device is described below, which may include: a processor 1001, such as a CPU, a memory 1005, a user interface 1003, a network interface 1004, a communication bus 1002. The communication bus 1002 is used to implement connection communication among these components. The user interface 1003 may include an input unit such as a keypad (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a wireless interface (e.g., a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be understood by those skilled in the art that the LED panel energy saving device configuration shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an LED display screen power saving program. The operating system is a program for managing and controlling hardware and software resources of the LED display screen energy-saving device and supports the running of the LED display screen energy-saving program and other software or programs.
In the LED display screen energy saving device shown in fig. 1, the processor 1001 may be configured to call the LED display screen energy saving program stored in the memory 1005 and execute the steps of the LED display screen energy saving method as described above.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
collecting display data;
updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
and judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
after the signal pulse width of display data in each column driving signal of the next row is calculated in the shadow elimination time, the method further comprises the following steps:
And outputting a pulse width modulation signal corresponding to each column driving signal according to the calculated signal pulse width of the display data in each column driving signal.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
the determining a working mode of a driving circuit of a column driving module corresponding to each column driving signal based on the signal pulse width and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode includes:
the following steps are performed for each column drive signal:
if the signal pulse width is zero, judging the signal is in an energy-saving mode;
and outputting an energy-saving signal to a driving circuit of the column driving module corresponding to the column driving signal, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
the determining a working mode of a driving circuit of a column driving module corresponding to each column driving signal based on the signal pulse width and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode includes:
The following steps are performed for each column drive signal:
if the signal pulse width is not zero, judging that the signal pulse width is in a normal driving mode;
and not outputting the energy-saving signal to the driving circuit of the column driving module corresponding to the column driving signal, and driving the driving circuit of the column driving module corresponding to the column driving signal to normally work according to the normal driving mode.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
the energy-saving method of the LED display screen further comprises the following steps:
and if the signal pulse width is zero in the preset time range, outputting an energy-saving signal to a driving circuit of a column driving module and a row scanning module corresponding to the column driving signal, adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode, and adjusting the row scanning module to pause.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
the signal pulse width is a low level signal pulse width.
In one embodiment, the processor 1001 may be configured to call the LED display screen power saving program stored in the memory 1005 and execute the method including:
The display data is gray scale data.
According to the LED display screen energy-saving equipment, the signal pulse width of display data in each column driving signal is judged in the shadow eliminating time period, the working mode of the driving circuit of the column driving module corresponding to each column driving signal is judged, and the driving circuit of the column driving module corresponding to each column driving signal is adjusted according to the working mode. Compared with the prior art that the energy-saving mode can be triggered only when the next frame data is all-zero data, the signal pulse width of the display data in each column driving signal is judged within the shadow elimination time, the driving circuit of the corresponding column driving module with the signal pulse width being zero enters the energy-saving mode, the starting times of the energy-saving mode of the column driving module within the line scanning period are increased, and the energy-saving efficiency of the LED display screen is improved.
Referring to fig. 2, based on the hardware architecture of the LED display panel energy saving device, a first embodiment of the LED display panel energy saving method of the present application is provided below, referring to fig. 12, the LED display panel includes a row scanning module 10 for outputting a plurality of row scanning signals, and a column driving module 21 for outputting a plurality of column driving signals,
The energy-saving method for the LED display screen comprises the following steps:
s100, collecting display data;
specifically, the display data of the present embodiment may be display data that displays various multimedia contents. For example, the display data may be display data for displaying content such as pictures, videos, texts, and application interfaces. Further, the display data of the present embodiment may be gradation data that displays various multimedia contents. The LED display screen generally has a rectangular display area formed by LED lamps arranged in rows and columns. The gray data at least comprises red light LED gray data which are controlled to be displayed by an LED lamp on the LED display screen, green light LED gray data which are controlled to be displayed by the LED lamp on the LED display screen, and blue light LED gray data which are controlled to be displayed by the LED lamp on the LED display screen.
In some embodiments, referring to fig. 3, the steps specifically include the following steps:
s110, receiving display data and storing the display data into a data memory;
s120, reading display data from the data memory;
it should be understood that the data Memory may be a Dynamic Random Access Memory (DRAM); or Static Random-Access Memory (SRAM).
S200, updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
specifically, the scanning mode of the LED display screen can be divided into a dynamic screen and a static screen, where the static screen is that each scanning line is turned on simultaneously, and each LED lamp is controlled by a different driving chip, so that a lot of driving chips are required for control. The dynamic screen only displays a certain row at a certain time, then displays the next row at the next time until all rows are displayed, then displays the first row, and so on, and circularly displays. In an exemplary embodiment, referring to fig. 8, the LED display screen of the present embodiment displays scan line 1 at a certain time, scan line 1 lasts for a line scan time, and then displays scan line 2 at the next time, scan line 2 lasts for a line scan time, until scan line 64 is displayed. Then, the scanning line 1 is displayed, and so on, and the display is circulated. The scanning mode of the dynamic screen utilizes the visual retention principle of human eyes, and after the frequency of scanning lines reaches a certain threshold value, the human eyes can display the whole picture. The row scan time indicates the duration of the row scan pulse for each row.
It should be noted that the line period may be a line period of one frame of display data, as shown in fig. 8. Of course, the line scanning period may be a line scanning period for displaying data of other frame numbers such as two frames, three frames, and the like. And is not particularly limited herein.
The vanishing time is the time gap between the line scanning pulses of the adjacent line scanning signals. As shown in fig. 8, the blanking time is a time interval between the line scan pulse for scanning line 1 and the line scan pulse for scanning line 2. It is worth mentioning that the line scanning pulse is usually a high level signal, but it should be understood that the line scanning pulse may be a low level signal in some embodiments.
It should be noted that the signal pulse width of the display data in each column driving signal is a low level signal pulse width.
And S300, judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
Specifically, referring to fig. 4, in step S310, the following steps are performed on each column driving signal:
if the signal pulse width is zero, judging that the signal is in an energy-saving mode;
And outputting an energy-saving signal to a driving circuit of the column driving module corresponding to the column driving signal, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode.
When the pulse width of the signal is zero, it indicates that no picture information needs to be displayed when the next line is scanned, that is, the picture, video or application program is black within the line scanning time of the next line, that is, no color display is needed. And at the moment, judging the energy-saving mode, outputting an energy-saving signal to the driving circuit of the column driving module corresponding to the column driving signal, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause working according to the energy-saving mode.
Referring to fig. 9, LN _ width represents the signal pulse width of the column driving signal during the row scanning time of the corresponding row, for example, L1_ width represents the signal pulse width of the column driving signal during the row scanning time of scan row 1. During the blanking time of the scan lines 3 and 4 and during the row scan time of the scan lines 4, the pulse width of the signal in the first row is equal to 0, and at this time, the energy-saving signal is at a low level, so that the driving circuit of the row driving module corresponding to the first row stops operating. During the line scanning time of the scanning line 5, the pulse width of the signal in the first column is equal to 0, the driving circuit of the column driving module corresponding to the first column keeps suspending until the pulse width of the signal in the first column is not equal to 0 during the line scanning time of the scanning line 6, and at this time, the energy-saving signal is at a high level, so that the driving circuit of the column driving module corresponding to the first column normally operates, and enters a normal driving mode.
And judging the signal pulse width of display data in each column driving signal within each shadow eliminating time of a row scanning period, outputting an energy-saving signal to a driving circuit of a column driving module corresponding to the column driving signal when the signal pulse width is zero, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode. Therefore, compared with the prior art that the energy-saving mode can be triggered only when the next frame data is all 0, the signal pulse width of the display data in each column driving signal is judged within the shadow eliminating time, and the driving circuit of the corresponding column driving module with the signal pulse width being zero enters the energy-saving mode, so that the starting times of the energy-saving mode of the column driving module in the line scanning period are increased, and the energy-saving efficiency of the LED display screen is improved.
In other embodiments, referring to fig. 5, S320, the following steps are performed for each column driving signal:
if the signal pulse width is not zero, judging the signal pulse width to be in a normal driving mode;
and not outputting the energy-saving signal to the driving circuit of the column driving module corresponding to the column driving signal, and driving the driving circuit of the column driving module corresponding to the column driving signal to normally work according to the normal driving mode.
When the pulse width of the signal is not zero, it indicates that picture information needs to be displayed when the next line is scanned, that is, a picture, a video or an application program needs to display colors within the line scanning time of the next line. And at the moment, judging the driving mode to be a normal driving mode, not outputting the energy-saving signal to the driving circuit of the column driving module corresponding to the column driving signal, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to normally work according to the normal driving mode, so that the corresponding color is displayed.
Referring to fig. 2, during the blanking time of the scan lines 1 and 2 and during the row scanning time of the scan line 2, the pulse width of the signal in the sixteenth row is not equal to 0, and at this time, the energy-saving signal is at a high level, so that the driving circuit of the row driving module corresponding to the sixteenth row normally operates. Until the row scanning time of the scanning row 3, the pulse width of the signal in the sixteenth column is equal to 0, and at this time, the energy-saving signal is at a low level, so that the driving circuit of the column driving module corresponding to the sixteenth column stops working and enters an energy-saving mode.
The method comprises the steps of judging the signal pulse width of display data in each column driving signal in a shadow eliminating time period, judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode. Therefore, compared with the prior art that the energy-saving mode can be triggered only when the next frame of data is all-zero data, the embodiment judges the signal pulse width of the display data in each column driving signal within the shadow eliminating time, and enables the driving circuit of the corresponding column driving module with the signal pulse width of zero to enter the energy-saving mode, so that the starting times of the energy-saving mode of the column driving module within the line scanning period are increased, and the energy-saving efficiency of the LED display screen is improved.
Based on the same inventive concept, please refer to fig. 6, the present application further provides an embodiment two, which is based on the embodiment one.
Example two
The energy-saving method for the LED display screen comprises the following steps:
s100, collecting display data;
s200, updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
s400, outputting a pulse width modulation signal corresponding to each column driving signal according to the calculated signal pulse width of the display data in each column driving signal;
specifically, according to the calculated signal pulse width of the display data in each column driving signal, a pulse width modulation signal corresponding to each column driving signal is output, so that the LED lamps in the corresponding column are driven to display according to the color in the display data.
And S300, judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
Based on the same inventive concept, please refer to fig. 7, the present application further proposes a third embodiment, which is based on the second embodiment.
EXAMPLE III
The energy-saving method for the LED display screen comprises the following steps:
s100, collecting display data;
s200, updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
s400, outputting a pulse width modulation signal corresponding to each column driving signal according to the calculated signal pulse width of the display data in each column driving signal;
s300, judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode;
and S500, if the signal pulse widths are zero in the preset time range, outputting an energy-saving signal to a driving circuit of a column driving module and a row scanning module corresponding to the column driving signal, adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode, and adjusting the row scanning module to pause.
Referring to fig. 10, when the signal pulse width of the display data is zero in the preset time range, it indicates that the picture, video or application program interface displayed by the display data is black and does not need to display color, so that the energy-saving signal is output to the driving circuit of the column driving module corresponding to the column driving signal, so that the driving circuit of the column driving module corresponding to the column driving signal stops working, and the energy-saving signal can also be output to the row scanning module, so that the row scanning module stops working. The driving circuit of the column driving module and the row scanning module are suspended, so that the energy-saving effect is further enhanced. It should be understood that the preset time range can be set according to practical situations, and the specific value is not limited herein.
Referring to fig. 11, the present application further provides an energy saving device for an LED display screen, including: the device comprises an acquisition module 101, a calculation module 102 and an operation mode adjustment module 103.
The acquisition module 101 is used for acquiring display data;
a calculating module 102, configured to update the display data of a next row when a row scanning period enters a shadow elimination time, and calculate a signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
The operation mode adjustment module 103 determines an operation mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusts the driving circuit of the column driving module corresponding to each column driving signal according to the operation mode.
In some embodiments, the apparatus further includes a pulse width modulation signal output module 104, configured to output a pulse width modulation signal corresponding to each column driving signal according to the calculated signal pulse width of the display data in each column driving signal.
The steps implemented by each functional module of the energy-saving device for the LED display screen can refer to each embodiment of the energy-saving method for the LED display screen of the present invention, and are not described herein again.
The present application also provides a computer readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of the LED display energy saving method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An energy-saving method for an LED display screen, wherein the LED display screen comprises a row scanning module for outputting a plurality of row scanning signals and a column driving module for outputting a plurality of column driving signals, the method comprising:
collecting display data;
updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
And judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width, and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
2. The method of claim 1, further comprising, after calculating the signal pulse width of the display data in each column driving signal of the next row at the blanking time:
and outputting a pulse width modulation signal corresponding to each column driving signal according to the calculated signal pulse width of the display data in each column driving signal.
3. The method according to claim 2, wherein the determining the operation mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the operation mode comprises:
the following steps are performed for each column drive signal:
if the signal pulse width is zero, judging that the signal is in an energy-saving mode;
and outputting an energy-saving signal to a driving circuit of the column driving module corresponding to the column driving signal, and adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to the energy-saving mode.
4. The method according to claim 2, wherein the determining the operation mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the operation mode comprises:
the following steps are performed for each column drive signal:
if the signal pulse width is not zero, judging the signal pulse width to be in a normal driving mode;
and not outputting the energy-saving signal to the driving circuit of the column driving module corresponding to the column driving signal, and driving the driving circuit of the column driving module corresponding to the column driving signal to normally work according to the normal driving mode.
5. The method of claim 1, further comprising:
and if the signal pulse width is zero in the preset time range, outputting an energy-saving signal to the driving circuit of the column driving module and the row scanning module corresponding to the column driving signal, adjusting the driving circuit of the column driving module corresponding to the column driving signal to pause according to an energy-saving mode, and adjusting the row scanning module to pause.
6. The method of any of claims 1-5, wherein the signal pulse width is a low level signal pulse width.
7. The method according to any one of claims 1 to 5, wherein the display data is grayscale data.
8. An energy-saving device for an LED display screen is characterized by comprising:
the acquisition module is used for acquiring display data;
the calculation module is used for updating the display data of the next row when the line scanning period enters the shadow elimination time, and calculating the signal pulse width of the display data in each column driving signal of the next row at the shadow elimination time; the shadow elimination time is a time gap between line scanning pulses of adjacent line scanning signals;
and the working mode adjusting module is used for judging the working mode of the driving circuit of the column driving module corresponding to each column driving signal based on the signal pulse width and adjusting the driving circuit of the column driving module corresponding to each column driving signal according to the working mode.
9. An LED display screen energy-saving device is characterized by comprising a processor, a memory electrically connected with the processor and an LED display screen energy-saving program which is stored on the memory and can run on the processor; the steps of the LED display screen energy saving method according to any one of claims 1 to 7 are implemented when the LED display screen energy saving program is executed by the processor.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores one or more programs, which are executable by one or more processors to implement the steps in the LED display screen energy saving method according to any one of claims 1 to 7.
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