CN113205774A - Method and device for preventing ghost shadow of channel of OLED screen body, display equipment and medium - Google Patents
Method and device for preventing ghost shadow of channel of OLED screen body, display equipment and medium Download PDFInfo
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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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- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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Abstract
The invention discloses a method and a device for preventing ghost shadow of a channel of an OLED screen body, display equipment and a medium, wherein the method comprises the following steps: detecting and identifying whether an HDM I channel switching operation exists; when the HDMI channel switching operation is detected, whether an HDMI signal is input is identified; when the HDMI signal is recognized, controlling a screen to display a HDMI equipment page, and reducing the screen brightness to a first preset brightness; when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be reduced to a second preset brightness; and when the picture is still detected in the HDMI channel for the second preset time and no operation is performed, controlling the screen to enter a screen saver state. The invention can reduce the risk of afterimage of the OLED screen under the HDMI channel.
Description
Technical Field
The invention relates to the technical field of image display, in particular to a method and a device for preventing ghost shadow of a channel of an OLED screen body, display equipment and a storage medium.
Background
With the rapid development of display devices, intelligent display devices have increasingly penetrated into people's lives. With the development of display technology, the increase of application scenes of display devices and the improvement of image quality experience requirements of people, people have higher requirements on the color expressiveness of displays, and the display devices are required to have higher display effects so as to meet the requirements for high-image quality visual experience.
An OLED (Organic Light-Emitting Diode) is a display screen technology. The OLED television manufactured by adopting the OLED technology does not need liquid crystal any more, RGB color signals are directly displayed by the OLED diode, and the problem of the visual angle of the liquid crystal hardly exists.
Based on the excellent display effect of the OLED, more and more televisions or display devices currently employ an OLED screen as a main display window.
In the prior art, the OLED screen body has a self-luminous characteristic, and due to the material problem (large power consumption) of the OLED screen body, after the OLED screen displays a static picture and a high-brightness picture for a long time, the organic materials can accelerate aging speed due to continuous light emission, so that the brightness is reduced, and a residual image is left on the screen. Particularly, after the OLED screen is connected to the HDMI device (such as a computer), the OLED screen may display the computer interface for a long time, for example, the computer interface displays many static pictures and high-brightness scenes for a long time, and the OLED afterimage risk is higher in such a scene, which is sometimes inconvenient for a user to use.
Thus, there is a need for improvements and enhancements in the art.
Disclosure of Invention
The present invention is directed to a method, an apparatus, a display device, and a storage medium for preventing image sticking in a channel of an OLED display, and aims to solve the problems that after a static image and a high-brightness image are displayed on an OLED screen for a long time, the display device in the prior art continuously emits light to accelerate aging speed, so that brightness is reduced, and an image sticking is left on the screen. The invention can reduce the risk of afterimage of the OLED screen under the HDMI channel.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for preventing the ghost shadow of a channel of an OLED screen body is disclosed, wherein the method comprises the following steps:
detecting and identifying whether an HDMI channel switching operation exists;
when the HDMI channel switching operation is detected, whether an HDMI signal is input is identified;
when the HDMI signal is recognized, controlling a screen to display a HDMI equipment page, and reducing the screen brightness to a first preset brightness;
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be reduced to a second preset brightness;
and when the picture is still detected in the HDMI channel for the second preset time and no operation is performed, controlling the screen to enter a screen saver state.
The method for preventing the ghost shadow of the channel of the OLED screen body comprises the following steps of:
the OLED screen device detects and identifies whether an instruction for manually switching to the HDMI channel exists or whether the instruction for automatically identifying whether the HDMI device is input and then jumps to the HDMI channel;
when a command of manually switching to the HDMI channel is detected, or the HDMI device jumps to the HDMI channel after being input is automatically recognized, the HDMI channel switching operation is considered to be detected.
The method for preventing the ghost shadow of the channel of the OLED screen body comprises the following steps of, when the operation of switching the HDMI channel is detected, identifying whether an HDMI signal is input or not:
when the HDMI channel switching operation is detected, whether an HDMI signal is input currently is identified;
when the fact that no HDMI signal is input currently is recognized, displaying no signal; and if the no-signal state lasts for a third preset time, the television displays the OLED screen saver.
The method for preventing the ghost image in the channel of the OLED screen body comprises the following steps of, when an HDMI signal is identified, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness:
when the HDMI signal is recognized, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness;
and a station logo recognition function is started in the HDMI channel, and a semitransparent shade is added to the station logo area.
The method for preventing the afterimage of the channel of the OLED screen body comprises the following steps of:
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be further reduced to a second preset brightness; if the picture is in motion, the picture is displayed according to the first preset brightness.
The method for preventing the afterimage of the channel of the OLED screen body comprises the following steps of:
when the picture is still detected in the HDMI channel for a second preset time and no operation is performed, controlling the screen to enter a screen saver state;
when the OLED screen body equipment is operated by receiving an operation instruction in the screen saver state, the page of the external equipment is displayed according to a first preset brightness state under the condition that the input of the external equipment is not changed.
The method for preventing the residual image of the channel of the OLED screen body is characterized in that the first preset brightness is 350 nits; the second predetermined brightness is 250 nits;
the first predetermined time is 5 minutes;
the second predetermined time is 10 minutes.
An anti-ghosting device for a channel of an OLED screen, wherein the device comprises:
the detection and identification module is used for detecting and identifying whether the HDMI channel switching operation exists;
the signal identification module is used for identifying whether an HDMI signal is input or not when the HDMI channel switching operation is detected;
the first adjusting module is used for controlling the screen to display the HDMI equipment page when the HDMI signal is recognized, and reducing the screen brightness to a first preset brightness;
the second adjusting module is used for controlling the screen brightness to be reduced to second preset brightness when the HDMI channel detects that the picture is static for first preset time and no operation is performed;
and the screen saver control module is used for controlling the screen to enter a screen saver state when the HDMI channel detects that the picture is still for the second preset time and no operation is performed.
A display device comprises a memory, a processor and an image display program which is stored in the memory and can run on the processor, wherein when the processor executes the image display program, the method for preventing the ghost shadow of the channel of the OLED screen body is realized.
A computer readable storage medium, wherein the computer readable storage medium has stored thereon an image display program, and when the image display program is executed by a processor, the image display program implements the steps of any one of the methods for preventing the afterimage of the channel of the OLED screen.
Has the advantages that: compared with the prior art, the invention provides a channel ghost-proof method of an OLED screen body, the invention reduces the brightness by identifying the progress HDMI channel through software, and the brightness of a television picture is further reduced under a long-time static state; and the screen saver is displayed when the user is not in use due to the long-time static picture, so that the purpose of preventing the residual image of the OLED screen under the HDMI channel is achieved, the energy consumption is reduced, the risk of the residual image caused by the long-time static picture of the OLED screen under the external HDMI equipment is avoided, and convenience is provided for the user to use.
Drawings
Fig. 1 is a flowchart of a specific embodiment of a method for preventing image sticking in a channel of an OLED panel according to an embodiment of the present invention.
Fig. 2 is a flowchart of an embodiment of a specific application of the method for preventing the image sticking of the channel of the OLED screen according to the embodiment of the present invention.
Fig. 3 is a schematic block diagram of a channel anti-ghost device of an OLED screen according to an embodiment of the present invention.
Fig. 4 is a schematic block diagram of an internal structure of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
With the rapid development of display devices, intelligent display devices have increasingly penetrated into people's lives. With the development of display technology, the increase of application scenes of display devices and the improvement of image quality experience requirements of people, people have higher requirements on the color expressiveness of displays, and the display devices are required to have higher display effects so as to meet the requirements for high-image quality visual experience.
An OLED (Organic Light-Emitting Diode) is a display screen technology. The OLED television manufactured by adopting the OLED technology does not need liquid crystal any more, RGB color signals are directly displayed by the OLED diode, and the problem of the visual angle of the liquid crystal hardly exists.
Based on the excellent display effect of the OLED, more and more televisions or display devices currently employ an OLED screen as a main display window.
In the prior art, the OLED screen body has a self-luminous characteristic, and due to the material problem (large power consumption) of the OLED screen body, after the OLED screen displays a static picture and a high-brightness picture for a long time, the organic materials can accelerate aging speed due to continuous light emission, so that the brightness is reduced, and a residual image is left on the screen. Particularly, after the OLED screen is connected to the HDMI device (such as a computer), the OLED screen may display the computer interface for a long time, for example, the computer interface displays many static pictures and high-brightness scenes for a long time, and the OLED afterimage risk is higher in such a scene, which is sometimes inconvenient for a user to use.
In order to solve the above problems, embodiments of the present invention provide a method for preventing ghost shadows in a channel of an OLED screen, where the method reduces brightness by recognizing a schedule HDMI channel through software, and further reduces brightness in a tv picture in a long-time still state; and the screen saver is displayed when the user is not in use due to the long-time static picture, so that the purpose of preventing the residual image of the OLED screen under the HDMI channel is achieved, the energy consumption is reduced, the risk of the residual image caused by the long-time static picture of the OLED screen under the external HDMI equipment is avoided, and convenience is provided for the user to use.
For example, as 1. other page brightness of TV is used normally: 450nits, 2. screen brightness reduction into the HMDI channel is: 350 nits; 3. the brightness decreased to 250nits after 5 minutes at rest; 4. the screen is kept still for 10 minutes (nits brightness refers to the brightness of the object, and is defined as the luminous intensity per unit area, and its unit is nit (nit), 1nit is 1 candela/square meter, and Lumen (LM) is the unit of luminous flux). The invention can reduce the risk of afterimage of the OLED screen under the HDMI channel.
Exemplary method
The channel anti-afterimage method of the OLED screen in this embodiment can be applied to an OLED display device, and specifically, as shown in fig. 1, the channel anti-afterimage method of the OLED screen includes the following steps:
s100, detecting and identifying whether an HDMI channel switching operation exists;
in the embodiment of the invention, in order to prevent the risk that the OLED screen body leaves the residual image when the OLED screen body is externally connected with other equipment in the HDMI channel, a set of residual image prevention strategy is adopted from a software end. The method specifically comprises the following steps:
after the OLED screen device is started, whether HDMI channel switching operation exists or not can be detected and identified.
Specifically, the OLED screen device, such as an OLED television, detects and identifies whether there is a command to manually switch to the HDMI channel, or whether there is an HDMI device input and then jumps to the HDMI channel;
when a command of manually switching to the HDMI channel is detected, or the HDMI device jumps to the HDMI channel after being input is automatically recognized, the HDMI channel switching operation is considered to be detected. That is, in the specific implementation, the OLED television may receive a user operation instruction to switch to the HDMI channel, or automatically recognize the HDMI channel when the OLED television is turned on.
The HDMI is a High Definition Multimedia Interface (HDMI), which is a fully digital video and audio transmission Interface capable of transmitting uncompressed audio and video signals. The HDMI can be used for set-top boxes, DVD players, personal computers, televisions, game hosts, comprehensive amplifiers, digital stereos, televisions and other equipment.
Step S200, when the HDMI channel switching operation is detected, whether an HDMI signal is input is identified;
in the embodiment of the invention, when the OLED screen body equipment is in a power-on state, the OLED screen body equipment is manually switched to the HDMI channel or jumps to the HDMI channel after the input of the HDMI equipment is automatically recognized. When the HDMI channel switching operation is detected, whether an HDMI signal is input or not is identified.
Specifically, when the HDMI channel switching operation is detected, whether an HDMI signal is input currently is identified; when the current HDMI signal is recognized to be input, the method goes to step S300;
when the fact that no HDMI signal is input currently is recognized, displaying no signal; and if the no-signal state lasts for a third preset time, the television displays the OLED screen saver. In the invention, if no signal is input, no signal is displayed; if the no-signal state lasts for 2 minutes, the television displays an OLED screen saver; and operating the OLED screen body equipment in a screen saver state, if no signal is displayed under the condition that the external equipment is unchanged, and timing the no-signal checking time again. If the external device has an input, the process proceeds to step S300.
Step S300, when the HDMI signal is recognized, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness;
in the embodiment of the invention, when the HDMI signal is recognized, the screen is controlled to display the HDMI equipment page, and the screen brightness is reduced to the first preset brightness.
Specifically, when an HDMI signal is recognized, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness; and a station logo recognition function is started in the HDMI channel, and a semitransparent shade is added to the station logo area. Wherein the first predetermined brightness is 350 nits; for example, normally using other page brightness of TV: 450nits, when entering the HMDI channel, the HDMI signal is recognized, the screen is controlled to display the HDMI equipment page, and the screen brightness is reduced to 350 nits. And a station logo recognition function is started in the HDMI channel, and a semitransparent shade is added to the station logo area. The invention can avoid color crosstalk and reduce the risk of preventing ghost shadow by adopting brightness reduction.
Nits brightness is the degree of brightness of an object, and is defined as the luminous intensity per unit area, and its unit is nit (nit), 1nit 1 kat/m, and Lumens (LM) are the units of luminous flux.
Step S400, when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be reduced to a second preset brightness;
in this step, when the HDMI channel detects that the frame is still for the first predetermined time and no operation is performed, the screen brightness is controlled to be reduced to the second predetermined brightness:
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be further reduced to a second preset brightness; if the picture is in motion, the picture is displayed according to the first preset brightness. The first predetermined time is 5 minutes; the second predetermined brightness is 250 nits.
For example, in this step, when it is detected that the frame is still for a first predetermined time, for example, 5 minutes, and no operation is performed, that is, whether the still frame lasts for 5 minutes is detected, and if the still frame lasts for 5 minutes, the screen brightness further decreases to a second predetermined brightness of 250 nits; the invention can reduce the risk of ghost shadow prevention by adopting the step reduction of the brightness.
If the picture is active, the picture is displayed with a first predetermined brightness of 350 nits.
And step S500, when the picture is still detected in the HDMI channel for the second preset time and no operation is performed, controlling the screen to enter a screen saver state.
In the embodiment of the invention, when the HDMI channel is continuously detected that the picture is still for the second preset time and no operation is performed, the screen is controlled to enter the screen saver state. The second predetermined time is 10 minutes.
Specifically, when the picture is continuously detected to be still for a second preset time (for example, 10 minutes) and no operation is carried out on the HDMI channel, the screen is controlled to enter a screen saver state; when the OLED screen body equipment is operated by receiving an operation instruction in the screen saver state, the page of the external equipment is displayed in a first preset brightness (for example, 350nits) state under the condition that the input of the external equipment is not changed.
In the embodiment of the invention, the key steps are as follows: s1, entering an HDMI channel, and reducing certain brightness to a first preset brightness; s2, then the 5-minute picture of the HDMI channel is static, no operation is performed, and the brightness is reduced to a second preset brightness; s3, on the basis of the point S2 of the HDMI channel, the picture is still for 10 minutes, and a screen saver is displayed: for example, 1. when the OLED television normally uses the other page brightness of the TV: 450nits, 2. the screen brightness reduction of the invention into the HMDI channel is: 350 nits; 3. the brightness decreased to 250nits after 5 minutes at rest; 4. the screen is taken out after standing for another 10 minutes. As above, the brightness reduction has been proven from current theory and practice to reduce the risk of ghost shadow prevention; according to the invention, the first preset brightness is reduced relative to the brightness of other scenes, so that the ghost can be reduced; the second predetermined brightness is further reduced than the first predetermined brightness, so that the afterimage can be further reduced.
The invention is explained in more detail below by means of a specific application example
The embodiment of the invention provides a method for preventing ghost shadow of a channel of an OLED screen body, which comprises the following steps:
step S11, start;
step S12, the OLED screen device selects an HDMI channel;
step S13, whether an external HDMI signal is accessed or not is judged, if yes, the step S14 is executed, and if no, the step S21 is executed;
step S14, displaying the HDMI equipment page on a screen;
step S15, setting the screen brightness to be A;
step S16, checking whether the picture is still for 5 minutes, if yes, going to step S17, and if no, going to step S15;
step S17, setting the screen brightness to be B;
step S18, checking whether the picture is still for 10 minutes, if yes, going to step S19, if no, returning to step S15;
step S19, displaying the OLED screen saver on the screen, and entering step S30;
step S21, no signal prompt is given on the screen, and the step S22 is entered;
step S22, detecting whether an external HDMI signal is accessed within 2 minutes; if there is a signal to step S14, if there is no signal to step S19;
and step S30, operating the remote controller to cancel the screen saver and returning to the state before the screen saver is displayed.
Therefore, the method can reduce the risk of the ghost shadow of the OLED screen under the HDMI channel.
Exemplary devices
As shown in fig. 3, the present embodiment further provides a device for preventing image sticking in a channel of an OLED panel, the device includes:
the detection and identification module 31 is used for detecting and identifying whether an operation of switching the HDMI channel exists;
the signal identification module 32 is used for identifying whether an HDMI signal is input or not when the HDMI channel switching operation is detected;
the first adjusting module 33 is configured to control the screen to display the HDMI device page and reduce the screen brightness to a first predetermined brightness when the HDMI signal is recognized;
a second adjusting module 34, configured to control to reduce the screen brightness to a second predetermined brightness when no operation is performed for a first predetermined time after the frame is detected to be still on the HDMI channel;
the screen saver control module 35 is configured to, when it continues to detect that the frame is still for the second predetermined time and no operation is performed on the HDMI channel, control the screen to enter the screen saver state, which is specifically described above.
Based on the above embodiments, the present invention further provides a display device, and a schematic block diagram thereof may be as shown in fig. 4. The display device comprises a processor, a memory, a network interface, a display screen and an HDMI channel interface which are connected through a system bus. Wherein the processor of the display device is configured to provide computing and control capabilities. The memory of the display device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the display device is used for communicating with an external terminal through network connection. The computer program is executed by a processor to realize a channel anti-ghost method of the OLED screen body. The display screen of the display device may be a liquid crystal display screen or an electronic ink display screen.
It will be understood by those skilled in the art that the schematic block diagram shown in fig. 4 is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation of the display device to which the solution of the present invention is applied, and a specific display device may include more or less components than those shown in the drawings, or may combine some components, or have different arrangements of components.
In one embodiment, a display device is provided, the display device includes a memory, a processor, and an image display program stored in the memory and executable on the processor, and the processor implements the following operation instructions when executing the image display program:
detecting and identifying whether an HDMI channel switching operation exists;
when the HDMI channel switching operation is detected, whether an HDMI signal is input is identified;
when the HDMI signal is recognized, controlling a screen to display a HDMI equipment page, and reducing the screen brightness to a first preset brightness;
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be reduced to a second preset brightness;
when the picture is still for the second preset time and no operation is detected in the HDMI channel, the screen is controlled to enter the screen saver state, which is specifically described above.
The step of detecting and identifying whether an operation of switching the HDMI channel exists comprises the following steps:
the OLED screen device detects and identifies whether an instruction for manually switching to the HDMI channel exists or whether the instruction for automatically identifying whether the HDMI device is input and then jumps to the HDMI channel;
when a command of manually switching to the HDMI channel is detected, or the HDMI device jumps to the HDMI channel after being input is automatically recognized, the HDMI channel switching operation is considered to be detected.
Wherein, when detecting that there is an operation of switching HDMI channels, the step of identifying whether there is an input of HDMI signal includes:
when the HDMI channel switching operation is detected, whether an HDMI signal is input currently is identified;
when the fact that no HDMI signal is input currently is recognized, displaying no signal; and if the no-signal state lasts for a third preset time, the television displays the OLED screen saver.
When the HDMI signal is recognized, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness comprises the following steps:
when the HDMI signal is recognized, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness;
and a station logo recognition function is started in the HDMI channel, and a semitransparent shade is added to the station logo area.
The method for preventing the afterimage of the channel of the OLED screen body comprises the following steps of:
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be further reduced to a second preset brightness; if the picture is in motion, the picture is displayed according to the first preset brightness.
When the HDMI channel is continuously detected that the picture is still for the second preset time and is not operated, the step of controlling the screen to enter the screen saver state comprises the following steps:
when the picture is still detected in the HDMI channel for a second preset time and no operation is performed, controlling the screen to enter a screen saver state;
when the OLED screen body equipment is operated by receiving an operation instruction in the screen saver state, the page of the external equipment is displayed according to a first preset brightness state under the condition that the input of the external equipment is not changed.
Wherein the first predetermined brightness is 350 nits; the second predetermined brightness is 250 nits;
the first predetermined time is 5 minutes;
the second predetermined time is 10 minutes.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
In summary, the present invention discloses a method, an apparatus, a display device and a storage medium for preventing ghost shadow in a channel of an OLED screen, wherein the method comprises: acquiring display frequency data of display equipment, and performing framing processing on an image to be displayed according to the display frequency data to obtain a plurality of image frames; acquiring backlight brightness adjustment data corresponding to the image to be displayed; and adjusting the brightness data of the image frames according to the backlight brightness adjustment data, and displaying the adjusted image frames. The invention splits the image to be displayed and controls the backlight brightness, thereby effectively avoiding the backlight color mixing phenomenon and the color cast phenomenon and improving the display effect of the image to be displayed.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for preventing ghost shadow of a channel of an OLED screen body is characterized by comprising the following steps:
detecting and identifying whether an HDMI channel switching operation exists;
when the HDMI channel switching operation is detected, whether an HDMI signal is input is identified;
when the HDMI signal is recognized, controlling a screen to display a HDMI equipment page, and reducing the screen brightness to a first preset brightness;
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be reduced to a second preset brightness;
and when the picture is still detected in the HDMI channel for the second preset time and no operation is performed, controlling the screen to enter a screen saver state.
2. The method for preventing the afterimage of the channel of the OLED screen according to claim 1, wherein the step of detecting and identifying whether there is an operation of switching the HDMI channel comprises:
the OLED screen device detects and identifies whether an instruction for manually switching to the HDMI channel exists or whether the instruction for automatically identifying whether the HDMI device is input and then jumps to the HDMI channel;
when a command of manually switching to the HDMI channel is detected, or the HDMI device jumps to the HDMI channel after being input is automatically recognized, the HDMI channel switching operation is considered to be detected.
3. The method for preventing the afterimage of the channel of the OLED screen according to claim 1, wherein the step of identifying whether the HDMI signal is inputted when the operation of switching the HDMI channel is detected comprises:
when the HDMI channel switching operation is detected, whether an HDMI signal is input currently is identified;
when the fact that no HDMI signal is input currently is recognized, displaying no signal; and if the no-signal state lasts for a third preset time, the television displays the OLED screen saver.
4. The method for preventing the afterimage of the channel of the OLED screen body according to claim 1, wherein the step of controlling the screen to display the HDMI device page and reducing the screen brightness to the first predetermined brightness when the HDMI signal is recognized comprises:
when the HDMI signal is recognized, controlling a screen to display an HDMI equipment page, and reducing the screen brightness to a first preset brightness;
and a station logo recognition function is started in the HDMI channel, and a semitransparent shade is added to the station logo area.
5. The method of claim 1, wherein the step of controlling the screen brightness to be reduced to a second predetermined brightness when no operation is performed for a first predetermined time after the frame is still detected in the HDMI channel comprises:
when the HDMI channel detects that the picture is still for a first preset time and no operation is performed, controlling the screen brightness to be further reduced to a second preset brightness; if the picture is in motion, the picture is displayed according to the first preset brightness.
6. The method according to claim 1, wherein the step of controlling the screen to enter the screen saver state when the frame is still for the second predetermined time and no operation is detected in the HDMI channel comprises:
when the picture is still detected in the HDMI channel for a second preset time and no operation is performed, controlling the screen to enter a screen saver state;
when the OLED screen body equipment is operated by receiving an operation instruction in the screen saver state, the page of the external equipment is displayed according to a first preset brightness state under the condition that the input of the external equipment is not changed.
7. The method according to claim 1, wherein the first predetermined brightness is 350 nits; the second predetermined brightness is 250 nits;
the first predetermined time is 5 minutes;
the second predetermined time is 10 minutes.
8. An anti-ghost device for a channel of an OLED screen, the device comprising:
the detection and identification module is used for detecting and identifying whether the HDMI channel switching operation exists;
the signal identification module is used for identifying whether an HDMI signal is input or not when the HDMI channel switching operation is detected;
the first adjusting module is used for controlling the screen to display the HDMI equipment page when the HDMI signal is recognized, and reducing the screen brightness to a first preset brightness;
the second adjusting module is used for controlling the screen brightness to be reduced to second preset brightness when the HDMI channel detects that the picture is static for first preset time and no operation is performed;
and the screen saver control module is used for controlling the screen to enter a screen saver state when the HDMI channel detects that the picture is still for the second preset time and no operation is performed.
9. A display device, comprising a memory, a processor and an image display program stored in the memory and executable on the processor, wherein the processor executes the image display program to implement the steps of the method for preventing the ghost shadow of the OLED screen according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an image display program, which when executed by a processor, implements the steps of the channel anti-ghosting method of the OLED screen according to any one of claims 1 to 7.
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