CN113066447A - Electronic device and display screen control method - Google Patents
Electronic device and display screen control method Download PDFInfo
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- CN113066447A CN113066447A CN202010002132.3A CN202010002132A CN113066447A CN 113066447 A CN113066447 A CN 113066447A CN 202010002132 A CN202010002132 A CN 202010002132A CN 113066447 A CN113066447 A CN 113066447A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides an electronic device and a display screen control method, wherein the method comprises the steps of determining preset line synchronization time according to the refresh rate and the resolution of a display screen; judging whether the current line synchronization time is equal to the preset line synchronization time or not; when the current line synchronization time is judged not to be equal to the preset line synchronization time, adjusting the driving parameters of a driving unit according to the total line synchronization time for displaying each frame of image; and when the display screen displays the next frame of image, controlling the driving unit to output a control signal to the light source according to the driving parameter so as to drive the light source to be started. The invention controls the brightness of the light source of the display screen according to the line synchronization signal of the display screen, avoids the display screen from generating dynamic blurring when displaying pictures, improves the display picture quality and improves the use experience of users.
Description
Technical Field
The invention relates to the field of display control, in particular to an electronic device and a display screen control method.
Background
With the development of science and technology, display screens as image output devices have been widely used in various electronic devices, such as smart phones, personal computers, smart televisions, and vr (visual reality) devices. When the display screen displays a picture, the display screen is usually controlled by a display driving circuit to output the picture, and an LED driving circuit controls a backlight LED light source to control the brightness of the picture. However, in the actual display process, because the response time of the display screen displaying each frame of picture is long, or the backlight LED light source of the display screen is always on, the picture displayed by the display screen is easily blurred, which results in the degradation of picture quality, thereby affecting the visual experience of the user.
Disclosure of Invention
Accordingly, there is a need for an electronic device and a method for controlling a display panel, which can control the brightness of a light source of the display panel according to a line synchronization signal to avoid motion blur when the display panel displays a picture.
A display screen control method is applied to an electronic device, the electronic device comprises a display screen, the display screen comprises a light source and a driving unit, and the method comprises the following steps:
determining preset line synchronization time according to the refresh rate and the resolution of the display screen;
judging whether the current line synchronization time is equal to the preset line synchronization time or not;
when the current line synchronization time is judged not to be equal to the preset line synchronization time, adjusting the driving parameters of the driving unit according to the total line synchronization time for displaying each frame of image; and
and when the display screen displays the next frame of image, controlling the driving unit to output a control signal to the light source according to the driving parameter so as to drive the light source to be started.
Preferably, the method further comprises the step of:
and when the current line synchronization time is judged to be equal to the preset line synchronization time, controlling the driving unit to drive the light source to be started according to the initial driving parameters.
Preferably, the driving parameter is a light source turn-on time, and the step of "adjusting the driving parameter of the driving unit according to the total line synchronization time for displaying each frame of image" specifically includes:
and adjusting the time for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and a preset duty ratio.
Preferably, the driving parameter is a driving current, and the step of "adjusting the driving parameter of the driving unit according to the total line synchronization time for displaying each frame of image" specifically includes:
and adjusting the current of the driving unit for driving the light source to be switched on according to the total line synchronization time for displaying each frame of image and a preset proportion.
Preferably, the driving parameters include a light source turn-on time and a driving current, and the step of adjusting the driving parameters of the driving unit according to a total line synchronization time for displaying each frame of image specifically includes:
adjusting the time for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and a preset duty ratio; and
and adjusting the current of the driving unit for driving the light source to be switched on according to the total line synchronization time for displaying each frame of image and a preset proportion.
Preferably, the method further comprises the steps of:
when the starting time of the light source is smaller than or equal to the preset value, adjusting the starting time of the driving unit for driving the light source according to the total line synchronization time for displaying each frame of image and the preset duty ratio;
judging whether the starting time of the light source is greater than a preset value; and
and when the starting time of the light source is greater than the preset value, adjusting the current of the driving unit for driving the light source to be started according to the total line synchronization time for displaying each frame of image and a preset proportion.
Preferably, the control signal is a pulse modulation signal or I2And C, a signal.
An electronic device comprises a processor and a display screen, wherein the display screen comprises a light source and a driving unit, and the processor comprises:
the determining module is used for determining preset line synchronization time according to the refresh rate and the resolution of the display screen;
the judging module is used for judging whether the current line synchronization time is equal to the preset line synchronization time or not;
the adjusting module is used for adjusting the driving parameters of the driving unit according to the total line synchronization time for displaying each frame of image when the current line synchronization time is judged not to be equal to the preset line synchronization time; and
and the driving module is used for controlling the driving unit to output a control signal to the light source according to the driving parameter so as to drive the light source to be started when the display screen displays the next frame of image.
Preferably, the driving parameter is a light source turn-on time, and the adjusting module is configured to adjust the time for the driving unit to drive the light source to turn on according to a total line synchronization time for displaying each frame of image and a preset duty ratio.
Preferably, the driving parameter is a driving current, and the adjusting module is configured to adjust a current of the driving unit driving the light source to be turned on according to a total line synchronization time for displaying each frame of image and a preset ratio.
Preferably, the driving parameters include light source turn-on time and driving current, and the adjusting module is configured to adjust the time for the driving unit to drive the light source to turn on according to the total line synchronization time for displaying each frame of image and a preset duty cycle, and adjust the current for the driving unit to drive the light source to turn on according to the total line synchronization time for displaying each frame of image and a preset ratio.
The electronic device and the display screen control method control the brightness of the light source of the display screen according to the line synchronization signal of the display screen, avoid dynamic blurring of the display screen when the display screen displays the picture, improve the display image quality and improve the use experience of a user.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to a preferred embodiment of the invention.
Fig. 2 is a functional block diagram of a display screen control system of an electronic device according to a preferred embodiment of the invention.
FIG. 3 is a flowchart illustrating a display control method according to a preferred embodiment of the invention.
Description of the main elements the electronic device 1
Display screen control system 100
Determining module 101
The following detailed description of the invention will be presented in conjunction with the above-identified drawing figures.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a schematic structural diagram of an electronic device 1 according to a preferred embodiment of the invention.
In this embodiment, the electronic apparatus 1 may be a smart phone, a personal computer, a smart television, or a VR device. Preferably, the electronic apparatus 1 is a VR device. A display control system 100 is operated in the electronic device 1 for controlling the on-state of the backlight of the display to avoid the motion blur of the image displayed on the display.
The electronic device 1 includes, but is not limited to, a processor 10, a memory 20, and a display screen 30. It will be appreciated by a person skilled in the art that the schematic diagram is only an example of the electronic apparatus 1 and does not constitute a limitation of the electronic apparatus 1, and may comprise more or less components than those shown, or combine some components, or different components, for example, the electronic apparatus 1 may further comprise an input output device, a network access device, a bus, etc.
The Processor 10 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor 10 may be any conventional processor or the like, the processor 10 being the control center of the electronic device 1, and various interfaces and lines connecting the various parts of the whole electronic device 1.
The memory 20 may be used for storing computer programs and/or modules/units, and the processor 10 implements various functions of the electronic device 1 by running or executing the computer programs and/or modules/units stored in the memory 20 and calling data stored in the memory 20. The memory 20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the electronic apparatus 1, and the like. In addition, the memory 20 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The Display screen 30 is an LCD (Liquid Crystal Display) Display screen or an OLED (Organic Light-Emitting Diode) Display screen. The display 30 includes, but is not limited to, a light source 31 and a driving unit 32. In this embodiment, the light source 31 is an LED lamp for providing backlight to the display screen 30. The driving unit 32 is an LED driving circuit, and is configured to drive the light source 31 to turn on.
Please refer to fig. 2, which is a functional block diagram of a display screen control system according to a preferred embodiment of the present invention.
In the present embodiment, the display screen control system 100 operates in the electronic device 1. The display control system 100 may include a plurality of functional modules comprised of program code segments. Program code for various program segments in the display control system 100 may be stored in the memory 20 of the electronic device 1 and executed by the processor 10 to implement display control functions.
In this embodiment, the display screen control system 100 may be divided into a plurality of functional modules according to the functions it performs. As shown in fig. 2, the functional modules may include a determining module 101, an obtaining module 102, a determining module 103, an adjusting module 104, and a driving module 105. The module referred to in the present invention refers to a series of computer program segments capable of being executed by at least one processor and performing a fixed function, which are stored in the memory 20. It will be appreciated that in other embodiments the modules may also be program instructions or firmware (firmware) that are fixed in the processor 10.
The determining module 101 is configured to determine a preset line synchronization time according to the refresh rate and the resolution of the display screen 30.
In this embodiment, the refresh rate and the resolution are fixed parameters of the display screen 30, and the preset line synchronization time Hsync 01/refresh rate/resolution. For example, when the refresh rate of the display screen 30 is 120Hz and the resolution is 1920 × 1080, the preset line synchronization time Hsync0＝1/120Hz/1920＝4.3μs。
The obtaining module 102 is configured to obtain a current line synchronization time of the display screen 30.
In this embodiment, the obtaining module 102 obtains a line synchronization signal and a frame synchronization signal when the display screen 30 displays an image, divides the number of frames of the image displayed on the display screen 30 according to the frame synchronization signal, and then determines an actual line synchronization time Hsync when the display screen 30 displays each frame of image.
The judging module 103 is configured to judge whether the current line synchronization time is equal to the preset line synchronization time.
The adjusting module 104 is configured to adjust the driving parameters of the driving unit 32 according to the total line synchronization time for displaying each frame of image when the judging module 103 determines that the current line synchronization time is not equal to the preset line synchronization time.
In a first embodiment, the driving parameter is a light source on-time. The adjusting module 104 adjusts the time for the driving unit 32 to drive the light source 31 to turn on according to the total line synchronization time for displaying each frame of image and the preset duty ratio. In the first embodiment, the light source on time t ═ aT. Wherein, T displays the total line synchronization time of each frame of image, a is the preset duty ratio, and the specific value is 10%. In other embodiments, the duty cycle may be set to other values, such as 6%, 8%, or 12%.
Specifically, when the resolution of the display screen 30 is 1920 × 1080, the total line synchronization time T for displaying each frame of image is 1920Hsync, and the light source on time T is 10% × 1920Hsync 192 Hsync.
In a second embodiment, the drive parameter is a drive current. The adjusting module 104 adjusts the current for driving the light source 31 to turn on by the driving unit 32 according to the total line synchronization time for displaying each frame of image and a preset ratio. In the second embodiment, the driving current I ═ bT. Wherein, T shows the total line synchronization time of each frame of image, b is the preset ratio, the specific value is 1/24, and the unit is mA/Hsync. In other embodiments, the preset ratio may be set to other values, such as 1/20, 1/22, or 1/26.
Specifically, when the resolution of the display screen 30 is 1920 × 1080, the total line synchronization time T for displaying each frame of image is 1920Hsync, and the driving current I is 1/24 × 1920mA is 80 mA.
In a third embodiment, the driving parameters include a light source on-time and a driving current. The adjusting module 104 adjusts the time for the driving unit 32 to drive the light source 31 to turn on according to the total line synchronization time for displaying each frame of image and the preset duty ratio, and adjusts the current for the driving unit 32 to drive the light source 31 to turn on according to the total line synchronization time for displaying each frame of image and the preset ratio.
In a fourth embodiment, the driving parameters include a light source on-time and a driving current. The adjusting module 104 adjusts the time for the driving unit 32 to drive the light source 31 to turn on according to the total line synchronization time for displaying each frame of image and the preset duty ratio. The determining module 103 determines whether the turn-on time of the light source 31 is greater than a preset value. When the turn-on time of the light source 31 is less than or equal to the preset value, the adjusting module 104 continues to adjust the turn-on time of the light source 31 driven by the driving unit 32 according to the total line synchronization time for displaying each frame of image and the preset duty ratio. When the turn-on time of the light source 31 is greater than the preset value, the current of the driving unit 32 for driving the light source 31 to turn on is adjusted according to the total line synchronization time for displaying each frame of image and a preset proportion.
In the fourth embodiment, the preset value is 230 Hsync. In other embodiments, the preset value may also be set to other values according to requirements.
The driving module 105 is configured to control the driving unit 32 to output a control signal to the light source 31 according to the driving parameter to drive the light source 31 to turn on when the display screen 30 displays a next frame of image.
In the first embodiment, the driving unit 32 outputs a control signal to the light source 31 to drive the light source 31 to turn on for the light source turn-on time.
In the second embodiment, the driving unit 32 outputs a control signal to the light source 31 at the driving current to drive the light source 31 to be always turned on.
In the third embodiment, the driving unit 32 outputs a control signal to the light source 31 at the driving current to drive the light source 31 to turn on for the light source on time.
In the fourth embodiment, the driving unit 32 outputs a control signal to the light source 31 to drive the light source 31 to turn on for the light source turn-on time. When the light source on time is greater than the preset value, and the display screen 30 displays the next frame of image, the driving unit 32 outputs a control signal to the light source 31 with the driving current to drive the light source 31 to be always on.
In this embodiment, the control signal is a PWM (Pulse width modulation) signal or I2A C (Inter-Integrated Circuit, serial bus) signal.
The driving module 105 is further configured to control the driving unit 32 to drive the light source 31 to turn on according to an initial driving parameter when the display screen 30 displays a next frame of image when the judging module 103 judges that the current line synchronization time is equal to the preset line synchronization time. In this embodiment, the initial driving parameter is an initial light source on time. Wherein the initial light source turn-on time is 0.8 milliseconds. In other embodiments, the initial driving parameter may also be an initial driving current, or include the initial light source on-time and the initial driving current. Wherein the initial driving current is 80 mA.
It should be noted that, in other embodiments, the display 30 further includes a microprocessor (not shown) integrated with the driving unit 32. Wherein the determining module 101 and the obtaining module 102 are executed by the processor 10. The determining module 103, the adjusting module 104 and the driving module 105 are executed by the microprocessor. That is, the determining module 101 transmits the determined preset line synchronization time to the microprocessor, the acquiring module 102 transmits the acquired line synchronization time to the microprocessor, and the microprocessor controls the determining module 103, the adjusting module 104, and the driving module 105 to execute corresponding functions.
Please refer to fig. 3, which is a flowchart illustrating a display screen control method according to a preferred embodiment of the invention. The order of the steps in the flow chart may be changed and some steps may be omitted according to different needs.
Step S301, determining a preset line synchronization time according to the refresh rate and the resolution of the display screen 30.
Step S302, acquiring the current line synchronization time of the display screen 30.
Step S303, determining whether the current line synchronization time is equal to the preset line synchronization time. When the current line synchronization time is not equal to the preset line synchronization time, the step proceeds to S304. When the current line synchronization time is equal to the preset line synchronization time, the step proceeds to S306.
Step S304, adjusting the driving parameters of the driving unit 32 according to the total line synchronization time for displaying each frame of image.
In a first embodiment, the driving parameter is a light source on-time. The step S304 includes: and adjusting the time for driving the light source 31 to be turned on by the driving unit 32 according to the total line synchronization time for displaying each frame of image and a preset duty ratio. In the first embodiment, the light source on time t ═ aT. Wherein, T displays the total line synchronization time of each frame of image, a is the preset duty ratio, and the specific value is 10%. In other embodiments, the duty cycle may be set to other values, such as 6%, 8%, or 12%.
In a second embodiment, the drive parameter is a drive current. The step S304 includes: and adjusting the current for driving the light source 31 to be switched on by the driving unit 32 according to the total line synchronization time for displaying each frame of image and a preset proportion. In the second embodiment, the driving current I ═ bT. Wherein, T shows the total line synchronization time of each frame of image, b is the preset ratio, the specific value is 1/24, and the unit is mA/Hsync. In other embodiments, the preset ratio may be set to other values, such as 1/20, 1/22, or 1/26.
In a third embodiment, the driving parameters include a light source on-time and a driving current. The step S304 includes: adjusting the time for driving the light source 31 to be turned on by the driving unit 32 according to the total line synchronization time for displaying each frame of image and the preset duty ratio, and adjusting the current for driving the light source 31 to be turned on by the driving unit 32 according to the total line synchronization time for displaying each frame of image and the preset proportion.
In a fourth embodiment, the driving parameters include a light source on-time and a driving current. The step S304 includes: adjusting the time for driving the light source 31 to be turned on by the driving unit 32 according to the total line synchronization time for displaying each frame of image and the preset duty ratio; judging whether the opening time of the light source 31 is greater than a preset value; when the turn-on time of the light source 31 is less than or equal to the preset value, the turn-on time of the light source 31 driven by the driving unit 32 is continuously adjusted according to the total line synchronization time for displaying each frame of image and the preset duty ratio. When the turn-on time of the light source 31 is greater than the preset value, the current of the driving unit 32 for driving the light source 31 to turn on is adjusted according to the total line synchronization time for displaying each frame of image and a preset proportion.
Step S305, when the display screen 30 displays the next frame of image, controlling the driving unit 32 to output a control signal to the light source 31 according to the driving parameter so as to drive the light source 31 to turn on.
In the first embodiment, the step S305 includes: the driving unit 32 is controlled to output a control signal to the light source 31 to drive the light source 31 to turn on for the light source turn-on time.
In the second embodiment, the step S305 includes: the driving unit 32 is controlled to output a control signal to the light source 31 with the driving current to drive the light source 31 to be always turned on.
In the third embodiment, the step S305 includes: controlling the driving unit 32 to output a control signal to the light source 31 with the driving current to drive the light source 31 to turn on for the light source on time.
In the fourth embodiment, the step S305 includes: the driving unit 32 is controlled to output a control signal to the light source 31 to drive the light source 31 to turn on for the light source turn-on time. When the light source on time is greater than the preset value, and the display screen 30 displays the next frame of image, the driving unit 32 outputs a control signal to the light source 31 with the driving current to drive the light source 31 to be always on.
Step S306, controlling the driving unit 32 to drive the light source 31 to turn on according to the initial driving parameters when the display screen 30 displays the next frame of image.
When each frame of image is displayed on the display screen 30, the electronic device and the display screen control method adjust the time for turning on the light source 31 and/or the current for driving the light source 31 to be turned on according to the current line synchronization time, so that the backlight brightness of the display screen 30 is compensated, the image is prevented from generating dynamic blurring, the visual effect of a user is optimized, and the user experience is effectively improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units or means recited in the apparatus claims may also be embodied by one and the same item or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above examples are only intended to illustrate embodiments of the present invention and not to limit the same, and although the present invention has been described in detail with reference to preferred examples, it will be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (11)
1. A display screen control method is applied to an electronic device, the electronic device comprises a display screen, the display screen comprises a light source and a driving unit, and the method is characterized by comprising the following steps:
determining preset line synchronization time according to the refresh rate and the resolution of the display screen;
judging whether the current line synchronization time is equal to the preset line synchronization time or not;
when the current line synchronization time is judged not to be equal to the preset line synchronization time, adjusting the driving parameters of the driving unit according to the total line synchronization time for displaying each frame of image; and
and when the display screen displays the next frame of image, controlling the driving unit to output a control signal to the light source according to the driving parameter so as to drive the light source to be started.
2. The display screen control method of claim 1, wherein the method further comprises the steps of:
and when the current line synchronization time is judged to be equal to the preset line synchronization time, controlling the driving unit to drive the light source to be started according to the initial driving parameters.
3. The display screen control method of claim 1, wherein the driving parameter is a light source turn-on time, and the step of adjusting the driving parameter of the driving unit according to the total line synchronization time for displaying each frame of image specifically comprises:
and adjusting the time for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and a preset duty ratio.
4. The display screen control method of claim 1, wherein the driving parameter is a driving current, and the step of adjusting the driving parameter of the driving unit according to the total line synchronization time for displaying each frame of image specifically comprises:
and adjusting the current of the driving unit for driving the light source to be switched on according to the total line synchronization time for displaying each frame of image and a preset proportion.
5. The display screen control method of claim 1, wherein the driving parameters include a light source on time and a driving current, and the step of adjusting the driving parameters of the driving unit according to a total line synchronization time for displaying each frame of image specifically comprises:
adjusting the time for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and a preset duty ratio; and
and adjusting the current of the driving unit for driving the light source to be switched on according to the total line synchronization time for displaying each frame of image and a preset proportion.
6. The display screen control method of claim 5, further comprising the steps of:
when the starting time of the light source is smaller than or equal to the preset value, adjusting the starting time of the driving unit for driving the light source according to the total line synchronization time for displaying each frame of image and the preset duty ratio;
judging whether the starting time of the light source is greater than a preset value; and
and when the starting time of the light source is greater than the preset value, adjusting the current of the driving unit for driving the light source to be started according to the total line synchronization time for displaying each frame of image and a preset proportion.
7. The display screen control method of claim 1, wherein: the control signal is a pulse modulation signal or I2And C, a signal.
8. An electronic device, comprising a processor and a display screen, wherein the display screen comprises a light source and a driving unit, the processor comprising:
the determining module is used for determining preset line synchronization time according to the refresh rate and the resolution of the display screen;
the judging module is used for judging whether the current line synchronization time is equal to the preset line synchronization time or not;
the adjusting module is used for adjusting the driving parameters of the driving unit according to the total line synchronization time for displaying each frame of image when the current line synchronization time is judged not to be equal to the preset line synchronization time; and
and the driving module is used for controlling the driving unit to output a control signal to the light source according to the driving parameter so as to drive the light source to be started when the display screen displays the next frame of image.
9. The electronic device of claim 8, wherein: the driving parameter is the light source starting time, and the adjusting module is used for adjusting the time for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and the preset duty ratio.
10. The electronic device of claim 8, wherein: the driving parameter is driving current, and the adjusting module is used for adjusting the current of the driving unit for driving the light source to be started according to the total line synchronization time for displaying each frame of image and a preset proportion.
11. The electronic device of claim 8, wherein: the driving parameters comprise light source starting time and driving current, and the adjusting module is used for adjusting the time for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and a preset duty ratio, and adjusting the current for driving the light source to be started by the driving unit according to the total line synchronization time for displaying each frame of image and a preset proportion.
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