CN111443888B - Display control method, display control device, electronic equipment and storage medium - Google Patents
Display control method, display control device, electronic equipment and storage medium Download PDFInfo
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- CN111443888B CN111443888B CN202010227766.9A CN202010227766A CN111443888B CN 111443888 B CN111443888 B CN 111443888B CN 202010227766 A CN202010227766 A CN 202010227766A CN 111443888 B CN111443888 B CN 111443888B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
Abstract
The embodiment of the application discloses a display control method, a device, a storage medium and electronic equipment, wherein the display control method is used for controlling the clock frequency of a logic board of a display panel, and the method comprises the following steps: acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section; detecting the field state of the video code stream in real time; when detecting that the field state of the video code stream enters a blank section from a specific content section, the clock frequency of the logic board is adjusted downwards from a first frequency to a second frequency; therefore, the output power consumption of the source driver is reduced by adjusting the clock frequency of the logic board, the power supply loop is improved, and the corresponding electromagnetic interference is reduced.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display control method, a display control device, an electronic device, and a storage medium.
Background
As the size and resolution of display panels become larger, electromagnetic interference (Electromagnetic Interference, EMI) translates into electromagnetic interference. This is a composite word, we should consider "electromagnetic" and "interference", respectively. The interference phenomenon generated after the electromagnetic wave acts on the electronic element is two kinds of conduction interference and radiation interference. Conductive interference refers to coupling (interfering) signals on one electrical network to another electrical network through a conductive medium. The radiated interference means that the interference source couples (interferes) signals to another electric network through space, and in the design of high-speed PCB and system, high-frequency signal wires, pins of integrated circuits, various connectors and the like can become the radiated interference source with antenna characteristics, and can emit electromagnetic waves and influence the normal operation of other systems or other subsystems in the system.
Disclosure of Invention
The embodiment of the application provides a display control method, a display control device, electronic equipment and a storage medium, which can reduce electromagnetic interference and power consumption.
In a first aspect, an embodiment of the present application provides a display control method for controlling a clock frequency of a logic board of a display panel, the method including the steps of:
acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section;
detecting the field state of the video code stream in real time;
and when detecting that the field state of the video code stream enters a blank section from a specific content section, the clock frequency of the logic board is adjusted down from a first frequency to a second frequency.
In the display control method according to the embodiment of the present application, after the step of down-adjusting the clock frequency from the first frequency to the second frequency when the field state of the video code stream is detected to enter the blank space from the specific content segment, the method further includes:
and when the remaining first preset length of the blank section is detected, switching the clock frequency of the logic board from the second frequency to the first frequency.
In the display control method according to the embodiment of the application, the method further includes the following steps:
and when detecting that the field state of the video code stream is in a specific content segment, maintaining the clock frequency of the logic board at a first frequency.
In the display control method according to the embodiment of the present application, after the step of down-adjusting the clock frequency from the first frequency to the second frequency when the field state of the video code stream is detected to enter the blank space from the specific content segment, the method further includes:
when the field state of the video code stream is detected to enter a specific content section from a blank section, the clock frequency of the logic board is up-regulated from the second frequency to the first frequency.
In the display control method according to the embodiment of the present application, when the remaining first preset length of the blank section is detected, the step of switching the clock frequency of the logic board from the second frequency to the first frequency includes:
acquiring the total length value of the current blank section;
calculating a first preset length according to the total length value;
and when the remaining first preset length of the blank section is detected, switching the clock frequency of the logic board from the second frequency to the first frequency.
The embodiment of the application also provides a display control device, which is used for controlling the clock frequency of a logic board of a display panel, and is characterized in that the device comprises:
the first acquisition module is used for acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section;
the detection module is used for detecting the field state of the video code stream in real time;
and the first adjusting module is used for adjusting the clock frequency of the logic board from the first frequency to the second frequency when detecting that the field state of the video code stream enters a blank section from a specific content section.
In the display control device according to the embodiment of the present application, the device further includes:
and the second adjusting module is used for switching the clock frequency of the logic board from the second frequency to the first frequency when the remaining first preset length of the blank section is detected.
In the display control device according to the embodiment of the present application, the device further includes:
and the third adjusting module is used for keeping the clock frequency of the logic board at the first frequency when detecting that the field state of the video code stream is in a specific content segment.
In a third aspect, embodiments of the present application also provide an electronic device comprising a processor and a memory storing computer readable instructions that, when executed by the processor, perform the steps of the above-described method.
In a fourth aspect, embodiments of the present application also provide a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method described above.
As can be seen from the above, in the embodiment of the present application, by acquiring a video code stream to be displayed, the video code stream includes a specific content segment and a blank segment; detecting the field state of the video code stream in real time; when detecting that the field state of the video code stream enters a blank section from a specific content section, downwards adjusting the clock frequency of the logic board from a first frequency to a second frequency; therefore, the output power consumption of the source driver is reduced by adjusting the clock frequency of the logic board, the power supply loop is improved, and the corresponding electromagnetic interference is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for processing contraband provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a first contraband processing apparatus according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a flowchart of a display control method according to some embodiments of the present application. The display control method is used for controlling the clock frequency of a logic board of a display panel, and comprises the following steps:
s101, acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section.
S102, detecting the field state of the video code stream in real time.
S103, when detecting that the field state of the video code stream enters a blank section from a specific content section, the clock frequency of the logic board is adjusted down from a first frequency to a second frequency.
Wherein, in the step S101, the rate of the code words of the video code stream is controlled by a logic board. Specifically, the logic board controls the rate of the codeword by controlling the clock frequency of the output. The video bitstream includes specific content segments and blank segments.
In step S102, when detecting the field state of the video code stream, the DE is mainly determined by the valid indication signal DE in the video code stream, and is continuously low level for a long time during the blank field, and the corresponding DE low level number is counted, for example, when the DE low level number in the preset time period is greater than a certain threshold, the DE low level number is determined to be in the blank section, otherwise, the DE low level number is determined to be in the specific content section.
Wherein, in the step S103, the first frequency is a clock frequency when the field status of the video code stream is a specific content segment; the first frequency is greater than the second frequency. The method controls the rate of outputting the code words of the blank section of the video code stream through the Tcon logic board, reduces the corresponding frequency, and adopts the first frequency under the normal condition, namely when the video code stream is in a specific content section, the normal rate transmission, namely the clock frequency is adopted. Thus, the output power consumption of the source driver is reduced, the power supply loop is improved, and the corresponding EMI is improved.
It will be appreciated that in some embodiments, after this step S103, further comprises:
s104, when the remaining first preset length of the blank section is detected, the clock frequency of the logic board is switched from the second frequency to the first frequency. The clock frequency is recovered to the first frequency N lines before the end of the current blank section in order to prepare the communication between the logic board and the source driver in advance to prevent the occurrence of erroneous operation.
The step S104 specifically includes: s1041, obtaining the total length value of the blank section currently; s1042, calculating a first preset length according to the total length value; s1043, when the remaining first preset length of the blank section is detected, switching the clock frequency of the logic board from the second frequency back to the first frequency. The length of the first preset length may be two rows of lengths.
In some embodiments, after this step S103, further comprising:
s105, when detecting that the field state of the video code stream is in a specific content segment, the clock frequency of the logic board is kept at a first frequency. In this step, when the field state of the video stream is detected as a specific content segment, the current clock frequency is kept unchanged.
In some embodiments, after this step S103, further comprising
S106, when the field state of the video code stream is detected to enter a specific content section from a blank section, the clock frequency of the logic board is up-regulated from the second frequency to the first frequency.
In this step, the clock frequency of the logic board is changed immediately as soon as the field of the video code stream is detected to change, thereby reducing the output power consumption of the source driver and electromagnetic interference as much as possible.
As can be seen from the above, in the embodiment of the present application, by acquiring a video code stream to be displayed, the video code stream includes a specific content segment and a blank segment; detecting the field state of the video code stream in real time; when detecting that the field state of the video code stream enters a blank section from a specific content section, downwards adjusting the clock frequency of the logic board from a first frequency to a second frequency; therefore, the output power consumption of the source driver is reduced by adjusting the clock frequency of the logic board, the power supply loop is improved, and the corresponding electromagnetic interference is reduced.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a display control device according to some embodiments of the present application. The display control device is used for controlling the clock frequency of a logic board of a display panel, and comprises: a first acquisition module 201, a detection module 202 and a first adjustment module 203.
The first obtaining module 201 is configured to obtain a video code stream to be displayed, where the video code stream includes a specific content segment and a blank segment; the rate of the codewords of the video stream is controlled by a logic board. Specifically, the logic board controls the rate of the codeword by controlling the clock frequency of the output. The video bitstream includes specific content segments and blank segments.
The detection module 202 is configured to detect a field state of the video bitstream in real time; when the field state of the video code stream is detected, the detection is mainly carried out by the effective indication signal DE in the video code stream, the DE is continuously low level for a long time in the blank field period, and the detection is carried out by counting the corresponding DE low level number, for example, when the DE low level number in the preset time period is larger than a certain threshold value, the detection is carried out in the blank section, otherwise, the detection is carried out in the specific content section.
The first adjusting module 203 is configured to, when detecting that the field state of the video code stream enters a blank space from a specific content segment, adjust the clock frequency of the logic board from a first frequency to a second frequency. Wherein the first frequency is a clock frequency when a field state of the video code stream is a specific content segment; the first frequency is greater than the second frequency. The method controls the rate of outputting the code words of the blank section of the video code stream through the Tcon logic board, reduces the corresponding frequency, and adopts the first frequency under the normal condition, namely when the video code stream is in a specific content section, the normal rate transmission, namely the clock frequency is adopted. Thus, the output power consumption of the source driver is reduced, the power supply loop is improved, and the corresponding EMI is improved.
Optionally, in the display control apparatus described in the embodiment of the present application, the apparatus further includes: and a second adjustment module. And the second adjusting module is used for switching the clock frequency of the logic board from the second frequency to the first frequency when the remaining first preset length of the blank section is detected. The clock frequency is recovered to the first frequency N lines before the end of the current blank section in order to prepare the communication between the logic board and the source driver in advance to prevent the occurrence of erroneous operation. Wherein, this second adjustment module is used for: acquiring the total length value of the current blank section; calculating a first preset length according to the total length value; and when the remaining first preset length of the blank section is detected, switching the clock frequency of the logic board from the second frequency to the first frequency. The length of the first preset length may be two rows of lengths.
Optionally, in the display control apparatus described in the embodiment of the present application, the apparatus further includes: and the third adjusting module is used for keeping the clock frequency of the logic board at the first frequency when detecting that the field state of the video code stream is in a specific content section. The third adjustment module is used for keeping the current clock frequency unchanged when detecting that the field state of the video code stream is a specific content segment.
Optionally, in the display control apparatus described in the embodiment of the present application, the apparatus further includes: and the fourth adjusting module is used for adjusting the clock frequency of the logic board from the second frequency to the first frequency when detecting that the field state of the video code stream enters the specific content section from the blank section. The fourth adjusting module changes the clock frequency of the logic board immediately as long as the field of the video code stream is detected to change, so that the output power consumption and electromagnetic interference of the source driver are reduced as much as possible.
As can be seen from the above, the display control device provided in the embodiment of the present application obtains a video code stream to be displayed, where the video code stream includes a specific content segment and a blank segment; detecting the field state of the video code stream in real time; when detecting that the field state of the video code stream enters a blank section from a specific content section, downwards adjusting the clock frequency of the logic board from a first frequency to a second frequency; therefore, the output power consumption of the source driver is reduced by adjusting the clock frequency of the logic board, the power supply loop is improved, and the corresponding electromagnetic interference is reduced.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application, where the electronic device 3 includes: processor 301 and memory 302, the processor 301 and memory 302 being interconnected and in communication with each other by a communication bus 303 and/or other form of connection mechanism (not shown), the memory 302 storing a computer program executable by the processor 301, the processor 301 executing the computer program when the computing device is running to perform the method in any of the alternative implementations of the above embodiments to carry out the following functions:
acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section; detecting the field state of the video code stream in real time; when detecting that the field state of the video code stream enters a blank section from a specific content section, downwards adjusting the clock frequency of the logic board from a first frequency to a second frequency; therefore, the output power consumption of the source driver is reduced by adjusting the clock frequency of the logic board, the power supply loop is improved, and the corresponding electromagnetic interference is reduced.
The present embodiments provide a storage medium that, when executed by a processor, performs the method of any of the alternative implementations of the above embodiments. The storage medium may be implemented by any type of volatile or nonvolatile Memory device or combination thereof, such as static random access Memory (Static Random Access Memory, SRAM), electrically erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
As can be seen from the above, in the embodiment of the present application, by acquiring a video code stream to be displayed, the video code stream includes a specific content segment and a blank segment; detecting the field state of the video code stream in real time; when detecting that the field state of the video code stream enters a blank section from a specific content section, downwards adjusting the clock frequency of the logic board from a first frequency to a second frequency; therefore, the output power consumption of the source driver is reduced by adjusting the clock frequency of the logic board, the power supply loop is improved, and the corresponding electromagnetic interference is reduced.
The foregoing describes in detail a display control method, apparatus, electronic device and storage medium provided in the embodiments of the present application, and specific examples are applied to illustrate the principles and embodiments of the present application, where the foregoing examples are only used to help understand the method and core idea of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (7)
1. A display control method for controlling a clock frequency of a logic board of a display panel, the method comprising the steps of:
acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section;
detecting the field state of the video code stream in real time, judging the field state of the video code stream through an effective indication signal in the video code stream, counting the number of low levels of the effective indication signal, and judging that the video code stream is in the blank section when the number of low levels of the effective indication signal in a preset time period is larger than a threshold value;
when detecting that the field state of the video code stream enters a blank section from a specific content section, downwards adjusting the clock frequency of the logic board from a first frequency to a second frequency;
acquiring the total length value of the current blank section;
calculating a first preset length according to the total length value;
and when the residual duration of the blank section is detected to be a first preset length, switching the clock frequency of the logic board from the second frequency back to the first frequency, wherein the first preset length comprises the lengths of two rows.
2. The display control method according to claim 1, wherein after the step of down-adjusting the clock frequency from the first frequency to the second frequency when detecting that the field state of the video stream enters a blank section from a specific content section, further comprising:
and when the remaining first preset length of the blank section is detected, switching the clock frequency of the logic board from the second frequency to the first frequency.
3. The display control method according to claim 1, characterized in that the method further comprises the steps of:
and when detecting that the field state of the video code stream is in a specific content segment, maintaining the clock frequency of the logic board at a first frequency.
4. A display control apparatus for controlling a clock frequency of a logic board of a display panel, the apparatus comprising:
the first acquisition module is used for acquiring a video code stream to be displayed, wherein the video code stream comprises a specific content section and a blank section;
the detection module is used for detecting the field state of the video code stream in real time, judging the field state of the video code stream through the effective indication signals in the video code stream, counting the number of the low levels of the effective indication signals, and judging that the video code stream is in the blank section when the number of the low levels of the effective indication signals in the preset time section is larger than a threshold value;
the first adjusting module is used for adjusting the clock frequency of the logic board from the first frequency to the second frequency when detecting that the field state of the video code stream enters a blank section from a specific content section;
the second adjusting module is used for acquiring the total length value of the blank section currently; calculating a first preset length according to the total length value; and when the residual duration of the blank section is detected to be a first preset length, switching the clock frequency of the logic board from the second frequency back to the first frequency, wherein the first preset length comprises the lengths of two rows.
5. The display control apparatus according to claim 4, characterized in that the apparatus further comprises:
and the third adjusting module is used for keeping the clock frequency of the logic board at the first frequency when detecting that the field state of the video code stream is in a specific content segment.
6. An electronic device comprising a processor and a memory storing computer readable instructions which, when executed by the processor, perform the steps of the method of any of claims 1-3.
7. A storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method according to any of claims 1-3.
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| CN202010227766.9A CN111443888B (en) | 2020-03-27 | 2020-03-27 | Display control method, display control device, electronic equipment and storage medium |
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| CN202010227766.9A CN111443888B (en) | 2020-03-27 | 2020-03-27 | Display control method, display control device, electronic equipment and storage medium |
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