CN114035701A - Howling control method, device, terminal and medium - Google Patents
Howling control method, device, terminal and medium Download PDFInfo
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- CN114035701A CN114035701A CN202111245622.7A CN202111245622A CN114035701A CN 114035701 A CN114035701 A CN 114035701A CN 202111245622 A CN202111245622 A CN 202111245622A CN 114035701 A CN114035701 A CN 114035701A
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- 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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- G—PHYSICS
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- 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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Abstract
The disclosure relates to a howling control method, a howling control device, a terminal and a medium, wherein the terminal comprises a display driving chip, the display driving chip comprises a touch scanning signal adjusting module, and the adjusting module is configured to reduce radiation energy of the touch scanning signal. In the terminal disclosed by the disclosure, the adjusting module of the display driving chip can adjust the touch scanning signal, so that the rising edge and/or the falling edge of the touch scanning signal are/is slowed down, the radiation energy of the touch scanning signal is reduced, and then howling is reduced.
Description
Technical Field
The present disclosure relates to the field of terminal technologies, and in particular, to a howling control method, apparatus, terminal, and medium.
Background
At present, the functions of terminals such as mobile phones are more and more comprehensive, and the mobile phones become an indispensable part of daily life.
TDDI-LCD type display modules are the mainstream solution for LCD display modules on the market. Wherein, TDDI is called Touch and Display Driver Integration, meaning that Touch and Display driving are integrated; LCDs are collectively known as Liquid Crystal displays and are commonly referred to as Liquid Crystal displays.
However, based on the design principle of the current TDDI-LCD display module, all mobile phones with the TDDI-LCD display module cannot avoid different levels of howling.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a howling control method, apparatus, terminal, and medium.
According to a first aspect of the embodiments of the present disclosure, a terminal is provided, where the terminal includes a display driving chip, and the display driving chip includes a conditioning module for a touch scan signal, and the conditioning module is configured to reduce radiation energy of the touch scan signal.
Optionally, the adjusting module is configured to adjust the radiation energy down by reducing a rising edge slope and/or a falling edge slope of the touch scan signal.
Optionally, the terminal includes a display module, a motherboard and a circuit board, the display module includes a liquid crystal display main body, the display driving chip is electrically connected to the motherboard through the circuit board, and the fitting resonance frequency of the display module is not in a frequency doubling relationship with the frequency of the touch scanning signal;
the fitted resonance frequency is determined from the frequency of the touch scan signal and at least one of the following parameters:
the display module comprises a display frame rate of the display module, a capacitance value of the circuit board, the thickness of a liquid crystal box of the liquid crystal screen main body, a liquid crystal material of the liquid crystal screen main body and a thin film transistor material of the liquid crystal screen main body.
Optionally, the display module comprises a backlight unit, and a backlight film material of the backlight unit is obtained by freezing and static electricity removal.
Optionally, the terminal includes a middle frame, the middle frame includes a first region and a second region, the hardness of the first region is greater than the hardness of the second region, and the first region is a region of the middle frame corresponding to the circuit board.
According to a second aspect of the embodiments of the present disclosure, there is provided a howling control method applied to a terminal, the method including:
and when the terminal is in an active mode, controlling a touch scanning signal to pass through an adjusting module of a display driving chip so that the adjusting module adjusts the touch scanning signal and reduces the radiation energy of the touch scanning signal.
Optionally, the adjusting module for controlling the touch scanning signal to pass through the display driving chip includes:
and sending a first control signal to a register of the adjusting module so that the touch scanning signal is transmitted to the adjusting module.
Optionally, the method comprises:
judging whether the received touch signal is an effective signal;
and if the received touch signal is determined to be an effective signal, controlling the terminal to be in the active mode.
Optionally, the determining that the received touch signal is a valid signal includes:
determining a touch area corresponding to the received touch signal;
and if the touch area is determined to be smaller than or equal to the set area threshold, determining the received touch signal as an effective signal.
Optionally, the method comprises:
determining that the received touch signal is not a valid signal;
and controlling the terminal to be in a low power consumption mode.
Optionally, the method comprises:
and when the terminal is in the low power consumption mode, controlling the touch scanning signal not to pass through the adjusting module.
Optionally, the controlling the touch scan signal not to pass through the adjusting module includes:
and sending a second control signal to the register so that the touch scanning signal is not transmitted to the adjusting module.
According to a third aspect of the embodiments of the present disclosure, there is provided a howling control apparatus applied to a terminal, the apparatus including:
and the control module is used for controlling the touch scanning signal to pass through the adjusting module of the display driving chip when the terminal is in the active mode, so that the adjusting module adjusts the touch scanning signal and reduces the radiation energy of the touch scanning signal.
Optionally, the control module comprises:
and the sending submodule is used for sending a first control signal to a register of the adjusting module so as to transmit the touch scanning signal to the adjusting module.
Optionally, the apparatus comprises a determining module,
the determining module is used for judging whether the received touch signal is an effective signal;
and the control module is used for controlling the terminal to be in the active mode if the received touch signal is determined to be an effective signal.
Optionally, the determining module is configured to:
determining a touch area corresponding to the received touch signal;
and if the touch area is determined to be smaller than or equal to the set area threshold, determining the received touch signal as an effective signal.
Alternatively,
the determining module is used for determining that the received touch signal is not a valid signal;
and the control module is used for controlling the terminal to be in a low power consumption mode.
Optionally, the control module is configured to:
and when the terminal is in the low power consumption mode, controlling the touch scanning signal not to pass through the adjusting module.
Optionally, the control module comprises:
and the sending submodule is used for sending a second control signal to the register so as to prevent the touch scanning signal from being transmitted to the adjusting module.
According to a fourth aspect of the embodiments of the present disclosure, there is provided a terminal, further comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to perform the method of the second aspect.
According to a fifth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having instructions thereon which, when executed by a processor of a terminal, enable the terminal to perform the method according to the second aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the terminal disclosed by the disclosure, the adjusting module of the display driving chip can adjust the touch scanning signal, so that the rising edge and/or the falling edge of the touch scanning signal are/is slowed down, the radiation energy of the touch scanning signal is reduced, and then howling is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a block diagram illustrating a display driving chip according to an exemplary embodiment.
Fig. 2 is a block diagram illustrating relative positions of a display module and a circuit board according to an exemplary embodiment.
FIG. 3 is a block diagram illustrating a midblock in accordance with an exemplary embodiment.
Fig. 4 is a flowchart illustrating a howling control method according to an exemplary embodiment.
FIG. 5 is a schematic diagram illustrating a touch scan signal according to an exemplary embodiment.
FIG. 6 is a schematic diagram illustrating a touch scan signal according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a howling control apparatus according to an exemplary embodiment.
Fig. 8 is a block diagram of a terminal shown in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Many display modules have a howling problem. For example, in a TDDI-LCD display module, when a touch scan signal (generally referred to as an SX signal, which is a detection signal for detecting whether the display module receives touch information) is in operation, the touch scan signal is in a high frequency (generally above 240 Hz) state in an Active Mode, and the energy of the rising edge and the falling edge is concentrated, so that the radiation energy is large, and a slight howling sound is generated. The sound wave emitted by the squealing sound causes the backlight film material of the display module to vibrate, and the vibration of the backlight film material has an expansion effect on the squealing sound. In addition, when the display module is applied to terminals such as mobile phones, a middle frame of the terminal and the display module form a structure similar to a sound cavity, and the structure has an expanding effect on the howling sound. When the user uses the terminal in a quiet scene, the user can hear a howling similar to a nourishing current sound.
The disclosure provides a terminal, in which a display driving chip may include an adjusting unit, and the adjusting unit may adjust a touch scanning signal, so that a rising edge and/or a falling edge of the touch scanning signal is slowed down, thereby reducing radiation energy of the touch scanning signal, further reducing howling generated by the terminal, and improving user experience.
In one exemplary embodiment, a terminal is provided. The terminal is, for example, a mobile phone, a notebook computer, a tablet computer, a wearable device, and the like. Referring to fig. 1-3, the terminal includes a display driver Chip 3 (Chip is generally called Integrated Circuit Chip, abbreviated as IC).
Referring to fig. 1, the display driving chip 3 includes an adjusting unit 31, and the adjusting unit 31 can adjust the touch scan signal, so that the rising edge and/or the falling edge of the touch scan signal are/is slowed down, the radiation energy of the touch scan signal is reduced, the howling generated by the display module 1 is reduced, and the use experience of the user is improved.
The display driver chip 3 may be provided with an IP (also called an IP core), which may be named detemodo, where the detemodo is used as the adjusting unit 31 of the display driver chip 3 to implement the function of adjusting the touch scan signal.
For example, based on the generation principle of howling, when the touch scan signal is in operation, since the touch scan signal is in a high frequency state (generally above 240 Hz) in an Active Mode, the energy of the rising edge and the falling edge is concentrated, the radiation energy is large, and howling is generated. Therefore, the generation of howling can be reduced or even avoided by turning down the radiation energy of the scanning touch signal. Based on this, the circuit of the display driving chip 3 may be designed, the adjusting unit 31 is provided in the display driving chip 3, and the adjusting unit 31 is configured to adjust the radiation energy of the touch scan signal low. That is, detemod may be used to turn down the energy of the touch scan signal.
The adjusting unit 31 may slow down a rising edge of the touch scan signal, thereby reducing the radiation energy of the touch scan signal. For example, the adjusting unit 31 may cause the touch scan signal to rise in a step form, thereby adjusting the radiation energy of the touch scan signal to be low.
The adjusting unit 31 may slow down a falling edge of the touch scan signal, thereby reducing the radiation energy of the touch scan signal. For example, the adjusting unit 31 may cause the touch scan signal to fall in a stepwise manner, thereby adjusting the radiation energy of the touch scan signal to be low.
The adjusting unit 31 can slow down the rising edge of the touch scan signal and simultaneously slow down the falling edge of the touch scan signal, thereby better adjusting the radiation energy of the touch scan signal. The degree of slowing down the rising edge and the degree of slowing down the falling edge may be the same or different.
The display driving chip 3 can adjust the touch scan signal through the adjusting unit 31, so that the rising edge and/or the falling edge of the touch scan signal are/is slowed down, the radiation energy of the touch scan signal is reduced, and howling is reduced.
It should be noted that the adjusting unit 31 may configure a register, and the register may be denoted as Detec EN. In the display driving chip 3, whether the touch scan signal enters the adjusting unit 31 or not can be controlled by a register.
For example, when Detec EN is 1, the touch scan signal may be enabled to enter the adjusting unit 31, and the adjusting unit 31 may adjust the touch scan signal to reduce the radiation energy of the touch scan signal and reduce howling. When Detec EN is 0, the touch scan signal may be controlled not to enter the adjusting unit 31. In this example, by setting the register, it is possible to control whether the touch scan signal enters the adjusting unit 31, and further control whether the radiation energy of the touch scan signal needs to be reduced, so that different requirements of a user can be better satisfied.
In one exemplary embodiment, a terminal is provided. Referring to fig. 1 to 3, in the terminal, the adjusting unit 31 of the display driving chip 3 is configured to adjust the radiation energy by reducing the rising edge slope and/or the falling edge slope of the touch scan signal.
Wherein, the adjusting unit 31 may reduce the rising edge slope and/or the falling edge slope of the touch scan signal by means of the skew Rate. Wherein, the skew Rate refers to a voltage conversion Rate, abbreviated as SR, abbreviated as Slew Rate.
For example, the adjusting unit 31 performs the skew Rate adjustment on the touch scan signal to decrease the slope of the rising edge of the touch scan signal, so as to slow down the rising edge, and further to decrease the radiation energy of the touch scan signal, so as to reduce howling.
For another example, the adjusting unit 31 performs the skew Rate adjustment on the touch scan signal to reduce the slope of the falling edge of the touch scan signal, so as to slow down the falling edge, and further reduce the radiation energy of the touch scan signal, thereby reducing the howling.
For another example, the adjusting unit 31 performs the skew Rate adjustment on the touch scan signal, so that the slope of the rising edge and the slope of the falling edge of the touch scan signal are both reduced, and further the radiation energy of the touch scan signal is better reduced, and the howling is reduced.
In the terminal, the adjusting unit 31 of the display driving chip 3 adjusts the radiation energy of the touch scan signal by reducing the rising edge slope and/or the falling edge slope of the touch scan signal, thereby reducing howling.
In one exemplary embodiment, a terminal is provided. Referring to fig. 1-3, the terminal includes a display module 1, a main board (not shown), and a circuit board 4, the display module 1 includes a liquid crystal display main body (not shown), the display driver chip 3 is electrically connected to the main board of the terminal through the circuit board 4, and the circuit board 4 may be a Flexible Printed Circuit (FPC).
The display module 1 may be a TDDI-LCD display screen. Due to the electrostrictive effect, the periodically changing touch scan signal (SX signal) causes the display module 1 to generate a periodic vibration to generate howling. Through research, parameters such as a display frame rate (display frequency) of the display module 1, a capacitance value of the circuit board 4, a liquid crystal cell thickness (cell gap) of the liquid crystal screen main body, a liquid crystal material of the liquid crystal screen main body, a Thin Film Transistor (TFT) material of the liquid crystal screen main body and the like all affect a vibration frequency of the display module 1, so that a howling magnitude is affected.
At the beginning of the design of the display module 1, the frequency of the touch scanning signal can be calculated through simulation in a simulation mode, and then the resonant frequency is finally fitted by combining the parameters of the display frame rate of the display module 1, the capacitance value of the circuit board 4, the thickness of the liquid crystal box of the liquid crystal screen main body, the liquid crystal material of the liquid crystal screen main body, the thin film transistor material of the liquid crystal screen main body and the like, and is recorded as the fitted resonant frequency.
And judging and predicting the magnitude of the howling sound according to whether the fitting resonance frequency and the frequency of the touch scanning signal are in a frequency doubling relation. If the howling sound exceeds the acceptable range, at least one of the parameters can be modified, so that the fitting resonance frequency and the frequency of the touch scanning signal are not in a frequency doubling relationship any more, and the howling is reduced or even avoided from the source.
Therefore, in the terminal, the fitting resonance frequency of the display module 1 and the frequency of the touch scanning signal are not in a frequency doubling relationship. That is, the fitting resonance frequency is not an integer multiple of the frequency of the touch scan signal, thereby reducing or even avoiding howling from the source.
In one exemplary embodiment, a terminal is provided. The display module of the terminal comprises a backlight unit, and the backlight unit comprises a backlight film material.
In an exemplary display module, the backlight unit is formed by laminating a plurality of backlight films. The multilayer backlight film can be attached by electrostatic adsorption. Therefore, there is generally a large amount of static electricity remaining between the backlight films. Research shows that the static residual quantity can directly influence the vibration frequency of the display module, and further influence the magnitude of the squeal.
In view of this, in the terminal, the backlight film can be obtained by freezing and static electricity removing treatment to reduce the static electricity residue in the backlight film, thereby reducing the amplification effect of the backlight unit on the howling sound and reducing the howling.
The backlight film may be obtained by other methods as long as the static electricity remaining in the backlight film can be reduced, and the method is not limited thereto.
In one exemplary embodiment, a terminal is provided. Referring to fig. 1 to 3, the terminal may include a middle frame 2, and the middle frame 2 includes a first area 21 and a second area 22. The area of the middle frame 2 corresponding to the circuit board 4 may be referred to as a first area 21, and the other areas may be referred to as a second area 22. In the middle frame 2, the hardness of the first region 21 is greater than that of the second region 22 to better avoid the first region 21 from vibrating, thereby reducing squeal.
The hardness of the first region 21 may be increased by filling the first region 21 with a common metal or a high-strength metal, but the hardness of the first region 21 may be increased by providing an alloy in the first region 21 to increase the thickness of the first region 21, which is not limited herein.
Through simulation research, the frequency of the touch scanning signal is brought into a simulation model, and then the material of the middle frame 2, the distance between the display module 1 and the middle frame 2, the hardness parameter of the middle frame 2 and the like are brought into the simulation model, so that the distance between the display module 1 and the middle frame 2 and the hardness (namely the structural stability) of the middle frame 2 can be found to directly influence the magnitude of the vibration frequency and further influence the magnitude of the squeal sound. Wherein, the stronger the structural stability of the middle frame 2, the smaller the howling sound emitted by the terminal.
Further, as is apparent from the examination, since the main region where the middle frame 2 vibrates is the first region 21, by setting the hardness of the first region 21 to be higher than the hardness of the second region 22, the vibration of the middle frame 2 can be reduced well, and the squeal can be reduced.
In an exemplary embodiment, a howling control method is provided and applied to a terminal, which may be the terminal in the above embodiments. Referring to fig. 4, the method may include:
and S110, controlling the touch scanning signal to pass through an adjusting unit of the display driving chip when the terminal is in an active mode, so that the adjusting unit adjusts the touch scanning signal and reduces the radiation energy of the touch scanning signal.
Wherein the active mode is generally referred to as active mode. The mode is a high power consumption and high sensitivity mode, and the frequency of the touch scanning signal is generally above 240Hz, which easily causes the terminal to generate howling.
Therefore, in this method, the circuit of the display driver chip of the terminal may be redesigned, and an IP named detemodo is provided in the display driver chip as an adjusting unit for adjusting the touch scan signal. When it is determined that the terminal is in the active mode, the touch scan signal may be controlled to enter the adjusting unit, and the touch scan signal before being adjusted is, for example, as shown in fig. 5. The adjusting unit adjusts the touch scan signal so that the radiation energy of the touch scan signal is reduced, and the adjusted touch scan signal is shown in fig. 6, for example. And then the output signal is output by the adjusting unit, and whether the display module receives the touch information is detected by using the output signal.
The method can not only keep the touch performance of the terminal without reducing the touch experience of the user, but also reduce howling, thereby improving the use experience of the user.
In one exemplary embodiment, a howling control method is provided and applied to a terminal. In the method, the controlling the touch scan signal to pass through the adjusting unit of the display driving chip may include:
and sending a first control signal to a register of the adjusting unit so that the touch scanning signal is transmitted to the adjusting unit.
The register may be denoted as Detec EN, and the first control signal may refer to an enable signal of Detec EN ═ 1. In the method, when Detec EN is 1, the touch scanning signal can enter the adjusting unit, the adjusting unit can adjust the touch scanning signal to reduce the radiation energy of the touch scanning signal, and the terminal can detect the touch information by using the scanning signal processed by the adjusting unit to reduce howling.
According to the method, the touch scanning signal is controlled to be adjusted in a first control signal mode, so that the radiation energy of the touch scanning signal can be reduced in an active mode, and howling is reduced. The method can ensure good touch experience, reduce howling and improve the use experience of users.
In one exemplary embodiment, a howling control method is provided and applied to a terminal. The method comprises the following steps:
s210, judging whether the received touch signal is an effective signal; if yes, go to step S220; if the determination result is negative, go to step S230;
s220, controlling the terminal to be in an active mode;
and S230, controlling the terminal to be in a low power consumption mode.
In this method, the terminal may be in an active mode (active mode) or a low power mode (doze mode), which is not limited herein. That is, in both the active mode and the low power mode, the terminal can receive the touch signal. And can judge whether the received touch signal is an effective signal.
When determining whether the touch signal is an effective signal, the determination may be performed based on parameters of the touch signal, such as a touch duration, a touch pressure, or a touch area. Of course, the determination may also be performed based on parameters such as the touch duration, the touch pressure, and the touch area, which are not described herein again.
If the judgment result is yes, namely the touch signal is determined to be an effective signal, the terminal is controlled to be in an active mode. For example, if the terminal is in the low power consumption mode at this time, the terminal is switched to the active mode; if the terminal is in the active mode, the active mode is maintained. When the terminal is in the active mode, howling is easily generated because the frequency of the touch scan signal of the terminal is high. Therefore, the processor or the display driving chip of the terminal may input the first control signal to the register of the adjusting unit, so that the touch scan signal may be transmitted to the adjusting unit, and the adjusting unit may adjust the radiation energy of the touch scan signal to be low, thereby reducing howling.
If the judgment result is negative, that is, the touch signal is determined not to be the effective signal, the control terminal is in the low power consumption mode. For example, if the terminal is in the active mode at this time, the terminal is switched to the low power consumption mode; and if the terminal is in the low power consumption mode, maintaining the low power consumption mode unchanged. When the terminal is in the low power consumption mode, the frequency of the touch scanning signal is low, and howling is generally not generated.
According to the method, whether the touch signal is an effective signal or not is judged, so that the control accuracy is improved, and the user experience is improved.
In one exemplary embodiment, a howling control method is provided and applied to a terminal. In the method, determining that the received touch signal is an effective signal may include:
s310, determining a touch area corresponding to the received touch signal;
and S320, if the touch area is determined to be smaller than or equal to the set area threshold, determining the received touch signal as an effective signal.
When a user operates a terminal such as a mobile phone in a touch manner, the touch area is generally small. When a user holds a terminal such as a mobile phone, the palm of the user may press against the mobile phone, so that the mobile phone receives a touch signal, and the touch area is generally large. Or when the user uses the mobile phone to make a call, the user presses the display module of the mobile phone and generates a touch signal, and the touch area is generally larger. Therefore, whether the touch signal is a valid signal can be determined by determining whether the touch area is a false touch.
In this method, a set area threshold may be set at the terminal. The set area threshold value can be set before the terminal leaves a factory or after the terminal leaves the factory, and after the set area threshold value is set, the set area threshold value can be subsequently modified so as to better meet the requirements of users.
The processor or the display driving chip of the terminal may determine the touch area of the touch signal first, and then determine the size between the touch area and the set area threshold. If the touch area is smaller than or equal to the set area threshold, it indicates that no false touch occurs, and the touch signal is determined to be an effective signal. If the touch area is larger than the set area threshold, the touch is mistakenly touched, and the touch signal is determined not to be the valid signal, namely the touch signal is determined to be the invalid signal.
For example, the terminal is a mobile phone, and the area threshold is set to be 5 square centimeters. If the processor or the display driving chip of the mobile phone determines that the touch area of the received touch signal is smaller than or equal to 5 square centimeters, the processor or the display driving chip determines that the touch signal is an effective signal, controls the mobile phone to be in an active mode, and sends a first control signal to a register of the adjusting unit so as to reduce howling. And if the touch area of the received touch signal is determined to be larger than 5 square centimeters, determining that the touch signal is an invalid signal, and controlling the mobile phone to be in a low power consumption mode to avoid howling.
The method can ensure good touch experience, can better avoid howling and improve the use experience of the user.
In one exemplary embodiment, a howling control method is provided and applied to a terminal. The method can comprise the following steps:
and controlling the touch scanning signal not to pass through the adjusting unit when the terminal is in the low power consumption mode.
The terminal is in a low power consumption mode, the frequency of the touch scanning signal is low, and howling is generally not generated. That is, in this case, the terminal does not generate howling even if the touch scan signal is not adjusted. Therefore, when the terminal is in the low power consumption mode, the touch scanning signal can be controlled not to pass through the adjusting unit, and the touch scanning signal does not need to be adjusted.
The controlling the touch scan signal not to pass through the adjusting unit may include:
and sending a second control signal to the register so that the touch scanning signal is not transmitted to the adjusting unit.
The register may be denoted as Detec EN, and the second control signal may refer to an enable signal of Detec EN ═ 0. In the method, when Detec EN is 0, the touch scan signal can be controlled not to enter the adjusting unit, so that unnecessary signal processing is avoided, the energy consumption of the terminal is reduced, and the use experience of a user is further improved.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. The apparatus is used to implement the above-mentioned howling control method. Illustratively, and with reference to fig. 7, the apparatus includes a control module 101, wherein,
and the control module 101 is configured to control the touch scanning signal to pass through the adjusting unit of the display driving chip when the terminal is in the active mode, so that the adjusting unit adjusts the touch scanning signal and reduces radiation energy of the touch scanning signal.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. Referring to fig. 5, in the apparatus, a control module 101 includes:
the sending submodule 101a is configured to send a first control signal to a register of the adjusting unit, so that the touch scan signal is transmitted to the adjusting unit.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. Referring to fig. 7, the apparatus may include a determination module 102, wherein,
a determining module 102, configured to determine whether a received touch signal is a valid signal;
the control module 101 is configured to control the terminal to be in an active mode if it is determined that the received touch signal is an active signal.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. Referring to fig. 7, in the apparatus, the determining module 102 is configured to:
determining a touch area corresponding to the received touch signal;
and if the touch area is determined to be smaller than or equal to the set area threshold, determining the received touch signal as an effective signal.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. Referring to fig. 7, in the apparatus,
a determining module 102, configured to determine that the received touch signal is not a valid signal;
and the control module 101 is used for controlling the terminal to be in a low power consumption mode.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. Referring to fig. 7, in the apparatus, a control module 101 is configured to:
and controlling the touch scanning signal not to pass through the adjusting unit when the terminal is in the low power consumption mode.
In one exemplary embodiment, a howling control apparatus is provided and applied to a terminal. Referring to fig. 7, in the apparatus, a control module 101 includes:
and a transmitting sub-module 101a for transmitting a second control signal to the register so that the touch scan signal is not transmitted to the adjusting unit.
In one exemplary embodiment, a terminal is provided, such as a mobile phone, a laptop, a tablet, a wearable device, and the like.
Referring to fig. 1-3, the terminal may include a display module 1, a middle frame 2, a display driving chip 3, a circuit board 4 and a processor (not shown), and the display module 1 may be a TDDI-LCD display screen. The display module 1 includes a liquid crystal panel main body. The circuit board 4 may be a flexible circuit board, and the display driving chip 3 is electrically connected to the processor through the flexible circuit board 4. The middle frame 2 includes a first area and a second area. The region of the middle frame 2 corresponding to the flexible circuit board 4 may be referred to as a first region, and the other regions may be referred to as second regions.
In the terminal, common metal or high-strength metal can be filled in the first area, and an alloy layer can be additionally arranged in the first area to improve the hardness of the first area, so that the stability of the whole structure of the middle frame 2 is improved, the vibration of the first area is better avoided, and the squeaking is reduced.
The fitting resonance frequency of the display module 1 is not in a frequency multiplication relation with the frequency of the touch scanning signal, so that the display module 1 can be better prevented from vibrating due to the touch scanning signal, and howling can be better avoided.
The display module 1 may further include a backlight unit formed by laminating a plurality of backlight films. In the manufacturing process of the backlight unit, after the backlight film material is attached, the backlight film material can be frozen to remove static electricity so as to reduce the static electricity residue of the backlight film material, thereby reducing the static electricity residue of the backlight unit, reducing the expanding effect of the backlight unit on squeaking, and further reducing the squeaking.
The display driving chip 3 includes an adjusting unit 31, and the adjusting unit 31 may reduce the slope of the rising edge and the slope of the falling edge of the touch scan signal based on the skew Rate to adjust the radiation energy of the touch scan signal.
The touch mode of the terminal generally includes an active mode (active mode) and a low power mode (doze mode). The active mode is a high power consumption and high sensitivity mode, and the frequency of the touch scan signal is generally above 240Hz, which easily causes the terminal to generate howling. The frequency of the touch scan signal is low in the low power mode, and howling is not generally generated.
The terminal can receive the touch signal no matter in the active mode or the low power consumption mode. And the touch area of the touch signal and the size of the set area threshold can be judged. The set area threshold may be 5 square centimeters.
This terminal may configure a register for the adjustment unit 31, denoted Detec EN. After the terminal receives the touch signal, the touch area of the touch signal can be determined. And then judging whether the touch area is larger than 5 square centimeters.
If the touch area is larger than 5 square centimeters, it is indicated that the touch is likely to be mistaken touch, and the touch signal is determined not to be an effective signal, so that the terminal is in a low power consumption mode. And then send the enable signal that Detec EN equals 0 to the register for register Detec EN equals 0, and touch scanning signal just can not transmit to adjusting element 31, avoids carrying out meaningless regulation to touch scanning signal, reduces terminal energy consumption.
If the touch area is less than or equal to 5 square centimeters, the touch is not mistaken touch at this time, and the touch signal is determined to be an effective signal, so that the terminal is in an active mode. And then sends an enable signal of Detec EN ═ 1 to the register so that the register Detec EN ═ 1, the touch scan signal (the touch scan signal before adjustment, for example, as shown in fig. 5) can be transmitted to the adjusting unit 31, and the adjusting unit 31 decreases the slope of the rising edge and the slope of the falling edge of the touch scan signal (the touch scan signal after adjustment, for example, as shown in fig. 6) in the manner of the Slew Rate to decrease the radiation energy of the touch scan signal, thereby decreasing howling.
The present disclosure provides a method of controlling howling comprehensively. Through the improvement of the structure, on the premise that the touch performance of the terminal is not affected and good touch experience of a user is ensured, howling can be reduced or even avoided at the source of the howling from the design angle of a TDDI-LCD display screen, the amplification effect of structures such as a backlight unit and a middle frame 2 on the howling can be reduced, and through a howling control method, the touch scanning signal in an active mode can be adjusted in a targeted manner, the radiation energy of the touch scanning signal is reduced, and the howling is reduced.
Referring to fig. 8, terminal 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input/output (I/O) pins 412, sensor component 414, and communication component 416.
The processing component 402 generally controls overall operation of the terminal 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
The memory 404 is configured to store various types of data to support operations at the terminal 400. Examples of such data include instructions for any application or method operating on the terminal 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 may be implemented by any type of volatile or non-volatile storage terminal or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power components 406 provide power to the various components of the terminal 400. The power components 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal 400.
The multimedia component 408 includes a screen between the terminal 400 and the user that provides an output pin. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front camera module and/or a rear camera module. The front camera module and/or the rear camera module can receive external multimedia data when the terminal 400 is in an operation mode, such as a shooting mode or a video mode. Each front camera module and rear camera module may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 410 is configured to output and/or input audio signals. For example, the audio component 410 includes a Microphone (MIC) configured to receive external audio signals when the terminal 400 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.
The I/O pins 412 provide pins between the processing component 402 and a peripheral pin module, which may be a keyboard, click wheel, button, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 414 includes one or more sensors for providing various aspects of status assessment for the terminal 400. For example, the sensor assembly 414 can detect an open/closed state of the terminal 400, relative positioning of components, such as a display and keypad of the terminal 400, the sensor assembly 414 can also detect a change in position of the terminal 400 or a component of the terminal 400, the presence or absence of user contact with the terminal 400, orientation or acceleration/deceleration of the terminal 400, and a change in temperature of the terminal 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 416 is configured to facilitate communications between the terminal 400 and other terminals in a wired or wireless manner. The terminal 400 may access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the terminal 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), digital signal processing terminals (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 404 comprising instructions, executable by the processor 420 of the terminal 400 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage terminal, and the like. The instructions in the storage medium, when executed by a processor of the terminal, enable the terminal to perform the methods shown in the above-described embodiments.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (21)
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| CN202111245622.7A CN114035701B (en) | 2021-10-26 | 2021-10-26 | Howling control method, device, terminal and medium |
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