CN112165750A - LED lamp control method, device and system and computer readable storage medium - Google Patents
LED lamp control method, device and system and computer readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity of the light using optical feedback
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
Abstract
The invention discloses an LED lamp control method, which is applied to the field of LED illumination and comprises the following steps: acquiring display data of a current frame and display data of a next frame; calculating to obtain display data of a transition frame according to the display data of the current frame and the display data of the next frame; and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame. The invention also discloses a device and a system for controlling the LED lamp and a computer readable storage medium, the average value of the display data of two adjacent frames is obtained to be used as the display data of the transition frame, so that the LED lamp can be smoother in the process of displaying and changing the frames, the brightness difference generated between the two adjacent frames during changing the frames is effectively reduced, the brightness difference captured by human eyes when the display data is in a low-gray-scale data stage is avoided, the display effect of the LED lamp is improved, and the user experience is improved.
Description
Technical Field
The invention relates to the field of LED illumination, in particular to an LED lamp control method, device and system and a computer readable storage medium.
Background
In the prior art, with the continuous development of the LED lighting display technology, LED lamps are accepted by users due to their characteristics of low power consumption, long service life, convenient transportation, environmental protection, pure and thick color, etc. At present, the LED lamp is widely applied to the fields of stage lighting, urban landscape brightening and the like.
However, in the process of using the LED lamp, in order to meet the highlighting requirement of some occasions, a high-power LED lamp is generally used, and since the brightness is integrally improved, even in a low-gray stage, the brightness difference of two adjacent gray data after gamma correction is easily captured by human eyes, so that when gradually changing display, the human eyes can feel the light feeling of slight shaking, the display effect is affected, and the user experience is greatly reduced.
Disclosure of Invention
The invention mainly aims to provide an LED lamp control method, and aims to solve the technical problem which cannot be realized in the prior art.
In order to achieve the above object, the present invention provides a method for controlling an LED lamp, comprising the following steps:
acquiring display data of a current frame and display data of a next frame;
calculating to obtain display data of a transition frame according to the display data of the current frame and the display data of the next frame;
and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame.
Wherein the step of calculating display data of a transition frame according to the display data of the current frame and the display data of the next frame comprises:
and caching the display data of the current frame and the display data of the next frame, calculating the average value of the display data of the current frame and the display data of the next frame, and marking the average value as the display data of the transition frame.
Wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
collecting the frame interval time of a current frame and a next frame, setting a frame interval time threshold value, and setting the transition display time of the display data of the transition frame according to the frame interval time and the frame interval time threshold value.
Wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
and comparing the frame interval time with the frame interval time threshold, and correspondingly setting the display time of the transition frame display data to be half of the frame interval time if the frame interval time is less than the frame interval time threshold.
Wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
comparing the frame interval time with the frame interval time threshold, and if the frame interval time is greater than the frame interval time threshold, correspondingly setting the transitional display time as a fixed value, wherein the transitional display time is less than the frame interval time.
Wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
and controlling a pulse width modulation module to encode, generating display data carrying and displaying the transition frame, displaying a display control instruction of the display data of the transition frame before the display data of the next frame, and controlling an LED lamp to correspondingly display.
Wherein the step of obtaining the display data of the current frame and the display data of the next frame comprises:
and decoding the input signal to acquire the display data of the current frame and the display data of the next frame, wherein the display data is gray data.
In addition, to achieve the above object, the present invention provides an LED lamp control device including: a memory, a processor and an LED lamp control program stored on said memory and executable on said processor, said LED lamp control program when executed by said processor implementing the steps of the method as described above.
The invention also provides an LED lamp control system, which comprises an LED lamp control device and at least an LED lamp, and the LED lamp control system realizes the steps of the LED lamp control method when being executed.
The present invention also provides a computer readable storage medium having stored thereon an LED lamp control program, which when executed by a processor implements the steps of the LED lamp control method as described above.
According to the LED lamp control method provided by the embodiment of the invention, the display data of the transition frame is obtained by obtaining the display data of the current frame and the display data of the next frame, the display data of the transition frame is calculated and obtained according to the display data of the current frame and the display data of the next frame, and the display data of the transition frame is displayed before the display data of the next frame is displayed. The average value between two frames is acquired to serve as the display data of the transition frame, so that the LED lamp can be smoother in the frame changing process, the brightness difference between the current frame and the next frame when the frame is changed can be effectively reduced, the brightness difference captured by human eyes when the display data are low-gray-scale data is avoided, the display effect of the LED lamp is improved, and the user experience degree is improved.
Drawings
FIG. 1 is a schematic diagram of an LED lamp control device for a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of an LED control method according to the present invention;
FIG. 3 is a schematic flow chart of a second embodiment of an LED control method according to the present invention;
fig. 4 is a functional block diagram of an embodiment of an LED control system according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring display data of a current frame and display data of a next frame; calculating to obtain display data of a transition frame according to the display data of the current frame and the display data of the next frame; and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame.
In the prior art, with the continuous development of the LED illumination display technology, the LED lamp is accepted by users due to the characteristics of low power consumption, long service life, convenient transportation, environmental protection, pure and thick color and the like. At present, the LED lamp is widely applied to the fields of stage lighting, urban landscape brightening and the like.
However, in the process of using the LED lamp, in order to meet the highlighting requirement of some occasions, a high-power LED lamp is usually used, and since the brightness is integrally improved, even in a low-gray stage, the brightness difference of two adjacent gray data after being corrected is also easily captured by human eyes, so that when the display is gradually changed, the human eyes can feel the light feeling of slight shaking, the display effect is affected, and the user experience is greatly reduced.
The invention provides a solution, which obtains the display data of a transition frame by obtaining the display data of a current frame and the display data of a next frame, calculates and obtains the display data of the transition frame according to the display data of the current frame and the display data of the next frame, and displays the display data of the transition frame before the display data of the next frame is displayed. The average value between two frames is acquired to serve as the display data of the transition frame, so that the LED lamp can be smoother in the frame changing process, the brightness difference between the current frame and the next frame when the frame is changed can be effectively reduced, the brightness difference captured by human eyes when the display data are low-gray-scale data is avoided, the display effect of the LED lamp is improved, and the user experience degree is improved.
As shown in fig. 1, fig. 1 is a schematic view of an operating environment structure of an LED lamp control device according to an embodiment of the present invention.
As shown in fig. 1, the LED lamp control apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a Keyboard (Keyboard), and the network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., 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.
Optionally, the LED lamp control apparatus may further include a tuning demodulator, a return channel, RF (Radio Frequency) circuitry, a sensor, audio circuitry, and the like.
Those skilled in the art will appreciate that the hardware configuration of the LED lamp control device shown in fig. 1 does not constitute a limitation of the LED lamp control device, 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, the memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, a data decoding module, a frame interval time acquisition module, a PWM output module, and an LED lamp control program.
The operating system is a program for managing and controlling the LED lamp control device and software resources, and supports the operation of the LED lamp control program and other programs.
The data decoding module is used for decoding the input signal to acquire display data of a current frame of the LED lamp and display data of an adjacent next frame.
The frame interval time acquisition module is used for acquiring the frame interval time of the current frame and the next frame and setting the display time of the transition frame.
The PWM output module, namely the pulse width modulation output module, is used for generating a PWM signal carrying a control instruction and controlling the LED lamp to perform corresponding display operation.
In the hardware structure of the LED lamp control device shown in fig. 1, the network interface 1004 is mainly used for accessing a network; the user interface 1003 is mainly used for detecting a confirmation instruction, an editing instruction, and the like. And processor 1001 may be configured to invoke the LED lamp control program stored in memory 1005 and perform the following operations:
acquiring display data of a current frame and display data of a next frame;
calculating to obtain display data of a transition frame according to the display data of the current frame and the display data of the next frame;
and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame.
Further, the processor 1001 may call the LED lamp control program stored in the memory 1005, and also perform the following operations:
and caching the display data of the current frame and the display data of the next frame, calculating the average value of the display data of the current frame and the display data of the next frame, and marking the average value as the display data of the transition frame.
Further, the processor 1001 may call the LED lamp control program stored in the memory 1005, and also perform the following operations:
collecting the frame interval time of a current frame and a next frame, setting a frame interval time threshold value, and setting the transition display time of the display data of the transition frame according to the frame interval time and the frame interval time threshold value.
Further, the processor 1001 may call the LED lamp control program stored in the memory 1005, and also perform the following operations:
and comparing the frame interval time with the frame interval time threshold, and correspondingly setting the display time of the transition frame display data to be half of the frame interval time if the frame interval time is less than the frame interval time threshold.
Further, the processor 1001 may call the LED lamp control program stored in the memory 1005, and also perform the following operations:
comparing the frame interval time with the frame interval time threshold, and if the frame interval time is greater than the frame interval time threshold, correspondingly setting the transitional display time as a fixed value, wherein the transitional display time is less than the frame interval time.
Further, the processor 1001 may call the LED lamp control program stored in the memory 1005, and also perform the following operations:
and controlling a pulse width modulation module to encode, generating display data carrying and displaying the transition frame, displaying a display control instruction of the display data of the transition frame before the display data of the next frame, and controlling an LED lamp to correspondingly display.
Further, the processor 1001 may call the LED lamp control program stored in the memory 1005, and also perform the following operations:
and decoding the input signal to acquire the display data of the current frame and the display data of the next frame, wherein the display data is gray data.
Based on the hardware structure of the LED lamp control device, the invention provides various embodiments of the LED lamp control method.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the LED lamp control method of the present invention.
In this embodiment, the LED lamp control method includes:
step S10: acquiring display data of a current frame and display data of a next frame;
optionally, the data decoding module decodes the input data input to the LED lamp to obtain the display data of the current frame and the display data of the next frame of the LED lamp. Specifically, the display data is gray scale data reflecting the brightness change of the LED lamp. Optionally, in a specific embodiment, the gray scale data includes information reflecting the brightness of the LED lamp, such as a time width occupied by a pulse adjustment period of the pulse modulation signal to be generated and a time width occupied by the LED on level.
Alternatively, the acquired display data may be display data of low gray scale, or display data at other gray scale levels.
Alternatively, in one embodiment, the input data is 256-level gray scale data, so that the LED lamp can display 16 million colors, which is 166777216 colors by controlling the values of R, G, B three primary colors of the LED lamp.
Optionally, in a specific embodiment, in order to reduce noise and improve stability and noise immunity for better display effect, the acquired input data is subjected to 65536 level gamma correction. Specifically, the acquired 256-level gray data is corrected to 65536-level gray data by a gamma correction formula or by looking up a gamma comparison table corresponding to the 256-level gray data and 65536.
65536-level gray data is obtained by correcting the 256-level gray data, so that the LED lamp has a better display effect and can adapt to more application scenes.
Step S20: calculating to obtain display data of a transition frame according to the display data of the current frame and the display data of the next frame;
optionally, the obtained display data of the current frame and the next frame of the LED lamp are cached in a memory, and an average value of the display data of the current frame and the display data of the next frame of the LED lamp is obtained through calculation.
Optionally, the obtained average value of the display data of the current frame and the display data of the next frame of the LED lamp is marked as the display data of the transition frame. Specifically, the gray data of the transition frame is different from both the gray data of the current frame and the gray data of the next frame. And the gray data of the transition frame is between the gray data of the current frame and the next frame. The brightness of the transition frame when displayed is also between the display brightness of the current frame and the display brightness of the next frame.
Optionally, in a specific embodiment, after the display data of the transition frame is obtained, the display data of the transition frame is buffered.
Step S30: and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame.
Specifically, the PWM output module (i.e., the pulse width modulation output module) is controlled to encode, and generate a PWM signal. The PWM signal carries a driving instruction for displaying the display data of the transition frame at the frame changing moment after the display of the current frame is finished, and displaying the display data of the next frame after the display of the display data of the transition frame is finished.
Specifically, the human eye considers that the picture is continuous and uninterrupted because of the time delay of the human eye perception, for example, for 36 frames displayed pictures, that is, 36 pictures displayed continuously per second. Therefore, in a specific embodiment, the pulse width modulation module is controlled to set the corresponding duty ratio to control the LED lamp to display, so as to achieve the purpose of controlling the brightness perceived by human eyes, so that the LED lamp displays the display data of the transition frame at the frame change time after the current frame is displayed, specifically, the display data of the transition frame is an average value of the display data of the current frame and the display data of the next frame, and the display data of the next frame is displayed after the display data of the transition frame is displayed.
And the PWM output module transmits the coded corresponding PWM signal to the LED lamp and controls the LED lamp to display according to an operation instruction carried by the PWM signal. Specifically, in a specific embodiment, after receiving the PWM signal, the LED lamp displays the PWM signal according to a display rule of "displaying a current frame, displaying a transition frame, and then displaying a next frame". The obtained transition frame is the average value of the display data of the current frame and the next frame, so that the display effect from the current frame to the transition frame to the next frame is smoother compared with the display effect from the current frame to the next frame, the occurrence of the situation that human eyes observe brightness difference can be effectively reduced in the low-gray stage, and the situation that a user feels light jitter is avoided.
In this embodiment, the display data of the current frame and the display data of the next frame are obtained through decoding, an average value is calculated according to the display data of the current frame and the display data of the next frame and is used as the display data of the transition frame, and before the display data of the next frame is displayed, the display data of the transition frame is displayed, so that the LED lamp can be smoother in the display frame changing process, the brightness difference between the current frame and the next frame at the frame changing moment can be effectively reduced, the brightness difference captured by human eyes when the display data is low-gray-scale data is avoided, the display effect of the LED lamp is improved, and the user experience is improved.
Referring to fig. 3, fig. 3 is a schematic flow chart of a second embodiment of the LED lamp control method of the present invention.
Based on the first embodiment shown in fig. 2, the LED lamp control method further includes:
step S21: collecting the frame interval time of a current frame and a next frame, and setting a frame interval time threshold;
optionally, the frame interval time acquiring module is controlled to acquire the frame interval time of the current frame and the next frame, specifically, the time mark is performed when the display data is received, the time mark is the time for displaying the display data, and optionally, the frame interval time of the current frame and the next frame is the difference between the time marks of the next frame and the current frame. Optionally, in a specific embodiment, the frame interval time between the collected current frame and the next frame is 32ms (milliseconds).
Optionally, in a specific embodiment, a frame interval time threshold is preset, and the frame interval time threshold is a self-defined preset value. And correspondingly setting the display time of the acquired transition frame according to the frame interval time threshold and the frame interval time as setting references. Optionally, in a specific embodiment, the preset frame interval time threshold is 30 ms. In another embodiment, the predetermined frame interval time threshold is 36 ms.
Step S22: and setting the transition display time of the display data of the transition frame according to the frame interval time and the frame interval time threshold.
Specifically, the frame interval time and the frame interval time threshold are compared, a comparison result is obtained, and the display time of the transition frame is correspondingly set according to the comparison result.
Optionally, if the comparison result is that the inter-frame time is less than the inter-frame time threshold, the display time of the transition frame is set to be half of the inter-frame time. Optionally, in a specific embodiment, the frame interval time between the current frame and the next frame acquired by the frame interval time acquiring module is 32ms, the preset frame interval time threshold is 36ms, and the frame interval time is less than the preset frame interval time threshold, so that the set display time of the transition frame is half of the frame interval time, and the display time of the transition frame is 16 ms.
Optionally, if the comparison result is that the frame interval time is greater than the preset frame interval time threshold, the display time is correspondingly set to be a fixed value, and the setting is specifically performed according to the actual display effect requirement, so as to improve the display effect and avoid generating the smear. Optionally, the fixed value is less than the frame interval time. In a specific embodiment, the frame interval time between the current frame and the next frame acquired by the frame interval time acquisition module is 36ms, the preset frame interval time threshold is 34ms, the frame interval time is greater than the preset frame interval time threshold, and the display time of the transition frame is fixedly set to be 16 ms.
Step S31: and displaying the display data of the transition frame in the display time of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame.
Specifically, the PWM output module is controlled to encode, and a PWM signal is generated. The PWM signal carries a driving command for displaying the display data of the transition frame at the frame change time after the display of the current frame is finished, and displaying the display data of the next frame after the display time of the transition frame is finished.
Optionally, the PWM output module transmits the encoded corresponding PWM signal to the LED lamp, and controls the LED lamp to display according to an operation instruction carried by the PWM signal.
In this embodiment, by obtaining the frame interval between the current frame and the next frame and presetting the frame interval threshold, the frame interval is compared with the preset frame interval threshold, and the display time of the transition frame is set according to the comparison result, so that the LED lamp can be smoother in the display frame changing process, the brightness difference between the current frame and the next frame at the frame changing time can be effectively reduced, and the phenomenon that the brightness difference is captured by human eyes when the display data is low-gray-scale data is avoided.
Referring to fig. 4, fig. 4 is a functional module schematic diagram of an embodiment of the LED lamp control system of the present invention.
Based on the LED lamp control method in the above embodiment of the present invention, this embodiment further provides an LED lamp control system, and in this embodiment, the LED lamp control system includes an LED lamp control device 10 and a plurality of LED lamps 20 that receive the PWM commands sent by the LED lamp control device 10 to perform corresponding display. The LED lamp control system in this embodiment, when executed, implements the steps of the LED lamp control method in any of the above embodiments.
Optionally, in order to achieve the above object, the present invention further provides a computer-readable storage medium, where an LED lamp control program is stored in the computer-readable storage medium provided in this embodiment, and the stored LED lamp control program can be read, interpreted and executed by a processor, so as to implement the steps of the LED lamp control method in any one of the above LED lamp control method embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An LED lamp control method is characterized by comprising the following steps:
acquiring display data of a current frame and display data of a next frame;
calculating to obtain display data of a transition frame according to the display data of the current frame and the display data of the next frame;
and displaying the display data of the transition frame, wherein the display data of the transition frame is displayed before the display data of the next frame.
2. The LED lamp control method according to claim 1, wherein the step of calculating the display data of the transition frame based on the display data of the current frame and the display data of the next frame comprises:
and caching the display data of the current frame and the display data of the next frame, calculating the average value of the display data of the current frame and the display data of the next frame, and marking the average value as the display data of the transition frame.
3. The LED lamp control method of claim 1, wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
collecting the frame interval time of a current frame and a next frame, setting a frame interval time threshold value, and setting the transition display time of the display data of the transition frame according to the frame interval time and the frame interval time threshold value.
4. The LED lamp control method according to claim 3, wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
and comparing the frame interval time with the frame interval time threshold, and correspondingly setting the display time of the transition frame display data to be half of the frame interval time if the frame interval time is less than the frame interval time threshold.
5. The LED lamp control method according to claim 3, wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
comparing the frame interval time with the frame interval time threshold, and if the frame interval time is greater than the frame interval time threshold, correspondingly setting the transitional display time as a fixed value, wherein the transitional display time is less than the frame interval time.
6. The LED lamp control method according to claim 3, wherein the step of displaying the display data of the transition frame before the display data of the next frame further comprises:
and controlling a pulse width modulation module to encode, generating display data carrying and displaying the transition frame, displaying a display control instruction of the display data of the transition frame before the display data of the next frame, and controlling an LED lamp to correspondingly display.
7. The LED lamp control method according to claim 1, wherein the step of acquiring the display data of the current frame and the display data of the next frame comprises:
and decoding the input signal to acquire the display data of the current frame and the display data of the next frame, wherein the display data is gray data.
8. An LED lamp control apparatus, comprising: a memory, a processor, and an LED lamp control program stored on the memory and run on the processor, which when executed by the processor implements the LED lamp control method of any one of claims 1-7.
9. An LED lamp control system comprising an LED lamp control device and at least one LED lamp, which when executed performs the steps of the LED lamp control method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a LED lamp control program, which when executed by a processor implements the steps of the LED lamp control method according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113068289A (en) * | 2021-03-09 | 2021-07-02 | 深圳市明微电子股份有限公司 | Method and device for improving gradual change effect of LED lamp |
| CN113905475A (en) * | 2021-09-30 | 2022-01-07 | 马瑞利汽车零部件(芜湖)有限公司 | LED animation stepping dimming method, lamp and automobile |
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