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CN111586818B - Power consumption reduction method, chip, display screen and terminal equipment - Google Patents

Power consumption reduction method, chip, display screen and terminal equipment Download PDF

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Publication number
CN111586818B
CN111586818B CN202010394506.0A CN202010394506A CN111586818B CN 111586818 B CN111586818 B CN 111586818B CN 202010394506 A CN202010394506 A CN 202010394506A CN 111586818 B CN111586818 B CN 111586818B
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Prior art keywords
chip
power consumption
mode
terminal device
display screen
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CN111586818A (en
Inventor
上官修宁
王铁钢
姜海斌
郗文远
柴丽琴
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0267—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0267—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components
    • H04W52/027—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components by controlling a display operation or backlight unit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Environmental & Geological Engineering (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The embodiment of the invention provides a power consumption reduction method, a chip, a display screen and terminal equipment. The power consumption reduction method comprises the following steps: when the terminal equipment is in the dark mode, the detail requirement on the display picture on the display screen is low, so that when the terminal is in the dark mode, the data volume processed by the IC chip is reduced, and the optimization on the detail of the display picture is reduced. Therefore, on the basis that the watching experience of a user in a dark mode is not influenced, the power consumption of the IC chip is reduced, the service life of the electric quantity of the terminal equipment is prolonged, and the user experience is improved.

Description

Power consumption reduction method, chip, display screen and terminal equipment
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a power consumption reduction method, a chip, a display screen and terminal equipment.
Background
The amount of power of a battery in the mobile terminal is limited, and as the time for a user to use the mobile terminal increases, the standby time of the mobile terminal cannot meet the requirements of the user, and the standby time can be increased by reducing the power consumption of the mobile terminal.
As shown in fig. 1, a special scene dark and black mode is set for the mobile terminal, so that a user can watch a system interface presented by taking dark color or even black as a theme on a mobile phone, the power consumption of a screen body of the mobile terminal is reduced, and the standby time is prolonged.
However, although the screen power consumption of the mobile terminal can be reduced when the mobile terminal is in the dark mode, the mobile terminal is in the dark mode only from the viewpoint of the brightness of the system interface, and the power consumption is reduced by reducing the brightness of the system interface, which has a limited effect on prolonging the standby time of the mobile terminal.
Disclosure of Invention
Embodiments of the present invention provide a power consumption reduction method, a Chip, a display screen, and a terminal device, which can reduce power consumption of an IC Chip (Integrated Circuit Chip), so as to prolong a power usage duration of the terminal device.
In a first aspect, an embodiment of the present invention provides a method for reducing power consumption, including:
when the terminal is in a dark black mode, the data amount processed by the IC chip is reduced so as to reduce the power consumption of the IC chip.
Optionally, the reducing the data amount processed by the IC chip includes:
and compressing and decompressing the display data of the image to be displayed according to a first compression ratio, wherein the first compression ratio is smaller than the compression ratio of the display data when the power consumption of the IC chip is not required to be reduced.
Optionally, the reducing the data amount processed by the IC chip includes:
turning off at least one Sub Pixel Rendering (SPR) function.
Optionally, the reducing the data amount processed by the IC chip includes:
shutting down the pressure drop compensation function; or,
the two-dimensional pressure drop compensation function is replaced by a one-dimensional pressure drop compensation function.
Optionally, the reducing the data amount processed by the chip includes:
the number of gray level bindings to be set is reduced.
Optionally, before reducing the data amount processed by the IC chip, the method further includes:
judging whether the terminal receives a power consumption reduction mode starting instruction of the IC chip;
if yes, the IC chip is started to reduce the power consumption mode.
Optionally, the determining whether the terminal receives a power consumption reduction mode starting instruction of the IC chip includes:
the central processing unit judges whether the terminal receives a power consumption reduction mode starting instruction of the IC chip;
correspondingly, the turning on of the power down mode of the IC chip includes:
and the central processing unit controls the IC chip to start the power consumption reduction mode of the IC chip.
In a second aspect, an embodiment of the present invention provides a chip for performing a method as described in any of the embodiments of the first aspect.
In a third aspect, embodiments of the present invention provide a display screen, where the display screen includes the chip as described in the second aspect.
In a fourth aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes the display screen according to the third aspect.
In a fifth aspect, the present invention provides a computer-readable storage medium, in which program instructions are stored, and when the program instructions are executed by a processor, the method according to any one of the first aspect of the present invention is implemented.
In a sixth aspect, the present application provides a program product, where the program product includes a computer program, where the computer program is stored in a readable storage medium, and the computer program can be read by at least one processor of a terminal device from the readable storage medium, and the computer program is executed by the at least one processor to enable the terminal device to implement the method according to any one of the first aspect of the present application.
The embodiment of the invention provides a power consumption reduction method, a chip, a display screen and a terminal device. Therefore, on the basis that the watching experience of a user in a dark mode is not influenced, the power consumption of the IC chip is reduced, the service life of the electric quantity of the terminal equipment is prolonged, and the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display screen switching according to an embodiment of the present application;
fig. 2 is a flowchart of a power consumption reduction method according to an embodiment of the present application;
FIG. 3 is a flow chart of a power consumption reduction method according to another embodiment of the present application;
FIG. 4 is a flow chart of a power consumption reduction method according to another embodiment of the present application;
FIG. 5 is a flow chart of a power consumption reduction method according to another embodiment of the present application;
FIG. 6 is a flow chart of a power consumption reduction method according to another embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a data voltage conversion according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In order to reduce the power consumption of the terminal, especially for the mobile terminal, the standby time can be prolonged, and at present, the power consumption of the display screen is reduced through the dark mode, so as to reduce the power consumption of the terminal. However, the mobile terminal is in the dark mode only from the viewpoint of brightness of the system interface, and power consumption is reduced by reducing the brightness of the system interface, which has a limited effect on prolonging the standby time of the mobile terminal.
Therefore, the embodiments of the present application propose: when the terminal is in the dark mode, the display interface is darker in color, and even if details of a picture displayed on the display screen are clearer, the user does not have obvious viewing feeling due to the darker display interface, so that when the terminal is in the dark mode, the requirement on the display details of an image displayed on the display screen is relatively lower, and the displayed image needs to be processed by the IC chip and then displayed on the display screen. Therefore, the amount of processing of data of an image to be displayed by the IC chip can be reduced, thereby reducing the power consumption of the IC chip to achieve an increase in the standby time period.
In the following, the scheme of the present application is described by specific examples.
Fig. 2 is a flowchart of a power consumption reduction method according to an embodiment of the present application. The execution main body in the embodiment of the present application may be, for example, a Central Processing Unit (CPU) of the terminal device, or a Graphics Processing Unit (GPU), or an IC chip, where the execution main body is the CPU of the terminal device in the embodiment of the present application. As shown in fig. 2, the method of the present embodiment includes:
s201, detecting whether the terminal equipment is in a dark black mode, and if so, executing S202; optionally, if not, executing S203.
In this embodiment, a user sets a preset brightness for the terminal device to enter the dark-black mode on the terminal device, when the terminal device enters an environment with darker brightness, the terminal device detects the brightness of the current environment, and when the brightness of the current environment meets the preset brightness for entering the dark-black mode, the terminal device automatically starts the dark-black mode. The user can also set the time when the terminal enters the dark mode, for example, 11 pm to 6 am next day, the terminal device is in the dark mode, so that when the 11 pm point is reached, the terminal device automatically enters the dark mode, and when the 6 am point is reached, the terminal device automatically exits the dark mode. Or the user sets the terminal equipment to be in a dark mode according to the requirement. After the terminal device enters the dark black mode, the brightness of the system interface decreases, and the interface is in a dark color (for example, the background color of the interface is black).
After the terminal device enters the dark and dark mode, the CPU of the terminal device detects that the terminal device enters the dark and dark mode.
S202, when the terminal is in the dark mode, reducing the data volume processed by the IC chip so as to reduce the power consumption of the IC chip.
In this embodiment, when the terminal device is in the dark mode, for the display screen, the pixel point in the black area is in the off state, and the light emitting device does not emit light, so that the power consumption of the mobile device can be reduced. Moreover, when the terminal device is in the dark mode, the display screen seen by the user is dark color or even black, so that the requirement on the details of the picture displayed on the display screen is lower than that when the picture is normally displayed, and therefore, when the terminal device is in the dark mode, the processing amount of the picture to be displayed can be reduced, namely, the optimization of the details of the picture to be displayed is reduced, and the power consumption of the IC chip is reduced.
Optionally, before S202, the method further includes:
s2011, judging whether the terminal receives a power consumption reduction mode starting instruction of the IC chip; if yes, the IC chip power-down mode is started.
In this embodiment, for example, a button for turning on and off the power consumption reduction mode of the IC chip may be provided on the terminal device, and when the terminal device enters the dark mode, a user selects whether the terminal device enters the power consumption reduction mode of the IC chip by clicking the button. And after the CPU of the terminal equipment receives the power consumption reduction mode starting instruction of the IC chip, controlling the IC chip to enter the power consumption reduction mode of the IC chip. The method and the device have the advantages that the user can select whether to enter the IC chip power consumption reduction mode or not according to needs, the terminal equipment is prevented from entering the IC chip power consumption reduction mode once entering the dark mode, and user experience is improved.
And S203, controlling the data amount processed by the IC chip to correspond to the data amount processed by the IC chip when the power consumption of the IC chip is not required to be reduced.
In this embodiment, when the terminal device is in the normal display mode (non-dark mode), it may be considered that it is currently not necessary to reduce the power consumption of the IC chip. Or, when the terminal device is in the dark mode but the IC power consumption reduction mode is not turned on, it may be considered that the power consumption of the IC chip does not need to be reduced currently, and the data amount processed by the IC chip is consistent with the data amount processed in the normal display mode.
In this embodiment, when the terminal device is in the dark mode, the requirement on details of a display screen on the display screen is low, so that when the terminal device is in the dark mode, the data amount processed by the IC chip is reduced, and the optimization on the details of the display screen is reduced. Therefore, on the basis of not influencing the watching experience of a user in a dark mode, the power consumption of the IC chip is reduced, the service life of the electric quantity of the terminal equipment is prolonged, and the user experience is improved.
Fig. 3 is a flowchart of a power consumption reduction method according to another embodiment of the present application. On the basis of the embodiment shown in fig. 2, as shown in fig. 3, the method of the embodiment includes:
s301, when Mobile Industry Processor Interface (MIPI) data are transmitted to the MIPI module, whether the terminal equipment is in a dark black mode is detected, and if yes, S302 is executed; optionally, if not, executing S303.
In this embodiment, when display data related to an image to be displayed, that is, MIPI data, is transmitted to the MIPI module of the IC chip, the CPU of the terminal device detects whether the terminal device is in the dark mode. For example, the terminal device determines whether a dark-black mode instruction is received within a preset time length, if so, the terminal device is in the dark-black mode, or the terminal device determines the current time, and if the current time is within a time period set by the user that the terminal device is in the dark-black mode, the terminal device is in the dark-black mode.
S302, compressing and decompressing display data of the image to be displayed according to the first compression ratio.
The first compression ratio is smaller than a normal display ratio, and the normal display ratio is a compression ratio of display data when the power consumption of the IC chip is not required to be reduced.
In this embodiment, before the image to be displayed is displayed on the display screen, the display data of the image to be displayed needs to be processed. The IC chip is provided with a logic circuit module for compressing and decompressing data to be displayed, and the more data processed by the logic circuit module, the more electric energy consumed by the logic circuit module, so that the electric energy consumed by the logic circuit module can be reduced by reducing the data processed by the logic circuit module.
Therefore, if the terminal is in the dark mode, the CPU sends an instruction for adjusting to the first compression ratio to the IC chip, the IC chip switches the compression ratio to the first compression ratio after receiving the instruction, and then the IC chip selects the MIPI data in the MIPI module according to the first compression ratio. For example, when the first compression ratio is 1/3, 1/3 of the MIPI data is selected for compression, and when the first compression ratio is 2/5, 2/5 of the MIPI data is selected for compression. Thus, the image to be displayed is still displayed on the display screen, and the data volume of the compressed MIPI data of the IC chip is reduced.
After the MIPI data with the first compression ratio is compressed, the MIPI data is transmitted to a Random Access Memory (RAM), and when the MIPI data is displayed on a display screen, the IC chip obtains the compressed MIPI data from the RAM and decompresses the MIPI data, so that the data volume of the MIPI data which needs to be decompressed by the IC chip is also reduced.
Optionally, after compressing and decompressing the MIPI data according to the first compression ratio, the IC chip may automatically switch the first compression ratio to the compression ratio during normal display, or continue to compress and decompress the MIPI data according to the first compression ratio until receiving an instruction sent by the CPU to switch to another compression ratio.
And S303, compressing and decompressing the display data of the image to be displayed according to the compression ratio during normal display.
In this embodiment, if the terminal device is in the normal display mode or in the dark mode but does not start the IC power consumption reduction mode, the MIPI data is compressed and decompressed according to the compression ratio during normal display.
This embodiment, when terminal equipment is in the dark mode, through compressing and uncompressing MIPI data with first compression ratio, wherein, first compression ratio is less than the compression ratio to the display data when need not reduce IC chip power consumption, and like this, the data bulk of IC chip to the compression and uncompressing of display data has just been reduced, thereby reduce the power consumption of IC chip, and also can not influence user's watching when dark mode, the consumption of terminal equipment electric quantity has been reduced, the length of use of extension terminal equipment electric quantity, user experience is improved.
Fig. 4 is a flowchart of a power consumption reduction method according to another embodiment of the present application. On the basis of any of the above embodiments, as shown in fig. 4, the method of this embodiment includes:
s401, detecting that the terminal equipment is in a dark mode.
In this embodiment, S201 may be referred to for the specific implementation of S401, and is not described herein again.
S402, turning off at least one sub-pixel rendering SPR function.
In this embodiment, the SPR function, such as a Line Buffer (Line Buffer) function and an edge display processing function, is implemented by using fewer sub-pixels to display the same resolution in a color borrowing manner. During normal display, for each Line, the display data of the previous Line needs to be borrowed, the display data of the previous Line is accessed by using Line buffers, and for the edge display of the display screen, the pixels are borrowed mutually through an edge display processing algorithm, so that the display definition of the image to be displayed is improved.
When the terminal equipment is in the dark and black mode, the display detail requirement on the display picture is low, so the display definition of the image to be displayed can be reduced. Therefore, when it is detected that the terminal device is in the dark-black mode, the CPU sends an instruction for instructing to turn off the SPR function to the IC chip, wherein the instruction may also instruct the type of the SPR function that is turned off.
In the terminal device, the turning-off and turning-on of the SPR function may be controlled by a register, for example, so that after the IC chip receives the instruction, the register of each SPR function instructed to be turned off in the instruction is controlled according to the instruction, thereby turning off the SPR function, for example, when the instruction instructs to turn off the Line Buffer function, the IC chip adjusts the register related to the Line Buffer function, and turns off the Line Buffer function, or when the instruction instructs to turn off the Line Buffer function and the edge display processing function, the IC chip adjusts the register related to the Line Buffer function and the register related to the edge display processing function, and turns off the Line Buffer function and the edge display processing function, thereby reducing the power consumption of the IC chip.
Optionally, before executing S302, the image to be displayed may be preprocessed, for example, the image to be displayed is subjected to at least one of a sunlight mode, a color enhancement process, a contrast enhancement process, a color gamut process, an HDR process, and the like, then it is determined whether to perform the processing of the SPR algorithm on the preprocessed image to be displayed, when the terminal device is in the dark black mode, S302 is executed, and when the terminal device is in the normal display mode, the SPR algorithm is used for processing.
In the embodiment, when the terminal device is in the dark and black mode, the requirement on the display details of the display picture is low, so that the optimization degree of the image to be displayed can be reduced by closing at least one SPR function, namely, the power consumption of the IC chip is reduced by reducing the definition when the image is displayed on the display screen, the power consumption of the terminal device is reduced, the service life of the power of the terminal device is prolonged, and the user experience is improved.
Fig. 5 is a flowchart of a power consumption reduction method according to another embodiment of the present application. On the basis of any of the above embodiments, as shown in fig. 5, the method of this embodiment includes:
s501, detecting that the terminal equipment is in a dark mode.
In this embodiment, the specific implementation of S501 may refer to S201, and is not described herein again.
S502, closing a pressure drop compensation function; alternatively, the two-dimensional pressure drop compensation function is replaced with a one-dimensional pressure drop compensation function.
In this embodiment, with the use of the display screen, the aging degrees (light emitting efficiencies) of the light emitting devices on the display screen are different, which results in uneven brightness of the display screen, and therefore, in order to make the brightness of the display screen uniform, the display screen has a voltage drop compensation function, and the driving voltage of the light emitting device with the worse aging degree is increased by the voltage drop compensation, so that the difference between the brightness emitted by each light emitting device is smaller, thereby making the brightness of the display screen uniform. Therefore, the voltage drop compensation function is that the IC chip improves the luminous brightness of the light-emitting device by increasing the driving voltage of the light-emitting device, so that the consumption of electric energy can be reduced by closing the voltage drop compensation function, and the power consumption of the IC chip is also reduced.
When the terminal equipment is in the dark mode, for the display screen, the pixel points of the black area are in the closed state, and the light-emitting device does not emit light, so that the voltage drop compensation can not be performed on the light-emitting device, and for the light-emitting device, when the terminal is in the dark mode, a user can not realize whether the brightness of the display screen is uniform or not, or the requirement of the user on the brightness of the display screen is reduced, so that the voltage drop compensation function can be closed.
The voltage drop compensation function comprises a horizontal voltage drop compensation function and a vertical voltage drop compensation function, namely a two-dimensional voltage drop compensation function, so that when the terminal equipment is in a dark mode, one of the voltage drop compensation functions can be closed, and voltage drop compensation is carried out through the one-dimensional voltage drop compensation function.
Therefore, when the terminal device is in the dark and black mode, the CPU sends an instruction for instructing to turn off the voltage drop compensation function to the IC chip, and after receiving the instruction, the IC chip adjusts the register for controlling the turn-off and turn-on of the voltage drop compensation function to turn off the voltage drop compensation function, or the CPU sends an instruction for instructing to turn down the two-dimensional voltage drop compensation function to the one-dimensional voltage drop compensation function to the IC chip.
It should be noted that, for the mobile phone, when it is in the dark mode, since the power signal trace in the vertical direction is longer than the power signal trace in the horizontal direction, and the influence on the brightness uniformity of the display screen is larger, when the instruction is a two-dimensional voltage drop compensation instruction and there is no specific instruction to turn off the voltage drop compensation function in which direction, it may only perform the voltage drop compensation in the vertical direction, that is, turn off the voltage drop compensation in the horizontal direction, so that the brightness uniformity of the display screen may be made as much as possible on the basis of reducing the power consumption of the IC chip.
In this embodiment, when the terminal device is in the dark mode, the requirement on the display details of the display frame is low, and therefore, the power consumption of the IC chip is reduced by turning off the voltage drop compensation function or replacing the two-dimensional voltage drop compensation function with the one-dimensional voltage drop compensation function, so that the power consumption of the terminal device is reduced, the service life of the terminal device is prolonged, and the user experience is improved.
Fig. 6 is a flowchart of a power consumption reduction method according to another embodiment of the present application. On the basis of any of the above embodiments, as shown in fig. 6, the method of this embodiment includes:
s601, detecting that the terminal equipment is in a dark mode.
In this embodiment, S201 may be referred to for a specific implementation of S601, and is not described herein again.
S602, reducing the number of the set gray scale binding points.
In this embodiment, during Gamma debugging, the IC chip sets a binding point, wherein a module for setting the binding point in the IC chip is referred to as a Gamma module. During normal display, 15-33 binding points are set for the 0-255 gray levels, after the gray level binding points are determined, the voltage of the binding point gray level is set to be the set voltage, and the voltage of the non-binding point gray level is obtained by linear calculation, for example, the voltage difference between two adjacent gray levels in the 3 gray level is 3V, the 103 gray level is 4V, and the 3 gray level-103 gray level is:
Figure BDA0002487083890000091
the voltage corresponding to the 4 gray scale is 3.01V, the voltage corresponding to the 5 gray scale is 3.02V, and so on. As shown in fig. 7, after the Gamma module sets the number of gray scale binding points, the voltage corresponding to the gray scale corresponding to each binding point is converted into an analog voltage by the digital-to-analog conversion module (DAC module), and the analog voltage is transmitted to the data line port of the pixel driving circuit of the display screen through the data line (S channel). The more gray scale binding points are set, the richer the colors of the pictures displayed on the display screen are. However, the more grayscale ties that are set, the more grayscale voltages corresponding to output ties, resulting in more power consumption of the IC chip. Thus, the number of gray level bindings is reduced when the terminal device is in the dark mode.
The number of gray scale binding points is controlled through the register on the IC chip, and the number of gray scale binding points is determined through the control register. Therefore, when the terminal device enters the dark and black mode, the CPU sends an instruction for adjusting the gray scale binding point number to the IC chip, optionally, the instruction can also indicate the adjusted gray scale binding point number, and after the IC chip receives the instruction, the IC chip determines the gray scale binding point number according to the instruction control register. For example, in the dark mode, the gray levels of 0 to 255 are set from 15 to 33 to 5 to 15 binding points, and the voltages of other non-binding gray levels are linearly calculated, so that the output voltage is reduced, and the power consumption of the IC is reduced.
Optionally, the selection of the number of the binding points of different gray scales can be realized through a register of the IC chip, when the number of the binding points of the gray scales is adjusted, the CPU can control the number of the binding points of the gray scales determined by the IC chip through an instruction, for example, the CPU determines the number of the binding points of the gray scales according to the electric quantity of the current terminal equipment, when the electric quantity is large, the number of the binding points of the reduced gray scales can be small, and when the electric quantity is small, the number of the binding points of the reduced gray scales is large.
According to the embodiment, when the terminal equipment is in the dark and black mode, the requirement on the display details of the display picture is low, so that the number of gray-scale binding points can be reduced, the output binding point voltage is also reduced, the power consumption of the IC chip is reduced, the power consumption of the terminal equipment is prolonged, and the user experience is improved.
It should be noted that, when the terminal device is in the dark mode, the solutions shown in any one of fig. 3 to fig. 6 may be used to reduce the power consumption of the IC chip, the solutions shown in each embodiment of fig. 3 to fig. 6 may be simultaneously selected to reduce the power consumption of the IC chip, and the solutions shown in any two or 3 embodiments of fig. 3 to fig. 6 may also be selected to reduce the power consumption of the IC chip, which is not limited in this application. Wherein the schemes shown in each of the examples of fig. 3-6 are used to reduce the power consumption of the IC chip, and therefore, when the terminal is in the dark mode, the schemes for reducing the power consumption of the IC chip cooperate to increase the reduced power consumption of the IC chip. In addition, when the display screen displays the image to be displayed, the SPR function improves the display definition of the image to be displayed through mutual borrowing of pixels, so that the SPR function consumes more power consumption, and thus the scheme of the embodiment shown in fig. 4 has a better effect of reducing the power consumption of the IC chip than other schemes. The turning off of at least one SPR function may be performed separately, reducing power consumption in the dark mode while not affecting the look and feel of the user.
Optionally, when the terminal device is in the dark mode, the resolution of the terminal device may be changed, for example, if the resolution is Full High Definition (FHD) + resolution may be reduced to High Definition (HD), so that the output of the S channel is reduced, thereby reducing the power consumption of the IC chip.
Based on the inventive concept of the present application, the present application provides a chip, which can be used to perform the power consumption reduction method provided in any of the above embodiments. Optionally, the application does not limit the type of the chip, and the chip may be used for processing a picture to be displayed and/or controlling light emission of a display screen.
Based on the inventive concept of the present application, the present application provides a display screen, where the display screen includes a chip that can implement the power consumption reduction method provided in any of the embodiments of the present application.
Fig. 8 is a schematic structural diagram of a terminal Device according to an embodiment of the present disclosure, as shown in fig. 8, the terminal Device may include, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a Digital broadcast receiver, a Personal Digital Assistant (PDA), a tablet computer (PAD), a Portable Multimedia Player (PMP), a vehicle-mounted terminal (e.g., a car navigation terminal), and a fixed terminal such as a Digital TV, a desktop computer, and the like. The terminal device shown in fig. 8 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 8, the terminal device may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 901, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 902 or a program loaded from a storage means 808 into a Random Access Memory (RAM) 803. In the RAM803, various programs and data necessary for the operation of the terminal device are also stored. The processing apparatus 801, the ROM802, and the RAM803 are connected to each other by a bus 804. An input/output (I/O) interface 805 is also connected to bus 804.
Generally, the following devices may be connected to the I/O interface 805: input devices 806 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, or the like; a Display panel 807 including, for example, a Liquid Crystal Display (LCD), an Organic Light Emitting Display (OLED), and the like; storage 808 including, for example, magnetic tape, hard disk, etc.; and a communication device 808. The communication means 809 may allow the terminal device to perform wireless or wired communication with other devices to exchange data. While fig. 8 illustrates a terminal device having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as Read-Only Memory (ROM), RAM, magnetic disk, or optical disk.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media capable of storing program codes, such as Read-Only Memory (ROM), random Access Memory (RAM), magnetic or optical disk, and the like.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (4)

1. A method for reducing power consumption, comprising:
when the terminal is in a dark mode, reducing the data volume processed by the IC chip so as to reduce the power consumption of the IC chip;
the reducing of the data volume processed by the IC chip comprises the following steps:
turning off at least one sub-pixel rendering function;
or, the pressure drop compensation function is turned off;
or, replacing the two-dimensional pressure drop compensation function with a one-dimensional pressure drop compensation function;
alternatively, the number of gray level bindings set is reduced.
2. The method of claim 1, wherein prior to reducing the amount of data processed by the IC chip, further comprising:
judging whether the terminal receives a power consumption reduction mode starting instruction of the IC chip;
if yes, the IC chip power-down mode is started.
3. The method of claim 2, wherein the determining whether the terminal receives a power down mode start command of the IC chip comprises:
the central processing unit judges whether the terminal receives a power consumption reduction mode starting instruction of the IC chip;
correspondingly, the turning on of the IC chip to reduce the power consumption mode includes:
and the central processing unit controls the IC chip to start the power consumption reduction mode of the IC chip.
4. A terminal device, characterized in that the terminal device comprises an IC chip, a display screen and a processor for performing the power consumption reduction method according to any one of claims 1-3.
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CN104933983A (en) * 2015-07-17 2015-09-23 京东方科技集团股份有限公司 Method and system for reducing power consumption of mobile terminal
CN106710539A (en) * 2015-11-12 2017-05-24 小米科技有限责任公司 Liquid crystal display method and device

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