CN110609646A - Signal processing method and device and electronic equipment - Google Patents
Signal processing method and device and electronic equipment Download PDFInfo
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- CN110609646A CN110609646A CN201910917675.5A CN201910917675A CN110609646A CN 110609646 A CN110609646 A CN 110609646A CN 201910917675 A CN201910917675 A CN 201910917675A CN 110609646 A CN110609646 A CN 110609646A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—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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Abstract
The disclosure relates to a signal processing method, a signal processing device and an electronic device, wherein the method comprises the steps of detecting the charging state of the electronic device; adjusting the amplitude of the scanning signal according to the charging state; the scanning signal is used for scanning the touch panel to obtain a scanning result for determining the touch position. According to the embodiment of the disclosure, the intensity of the scanning signal can be automatically adjusted under different charging states of the electronic equipment, so that the signal-to-noise ratio is improved, and the influence of the noise of the charger in the touch scanning process is reduced; and the processes of noise detection and frequency hopping are not needed, the area of a hardware circuit and the participation of software control are reduced, and the response speed of touch detection is improved.
Description
Technical Field
The present disclosure relates to the field of touch technologies, and in particular, to a signal processing method and apparatus, and an electronic device.
Background
Touch screens are widely used in more and more electronic devices, and users can operate the electronic devices through the touch screens. However, when the electronic device is being charged, noise generated by the charger may be injected into the touch screen, which may cause problems such as touch jumping or sliding disconnection, and affect normal use of the user. In the related art, multiple noise detection and frequency hopping processes are required to avoid noise interference, which affects the response speed of the touch scanning process.
Disclosure of Invention
In view of this, the present disclosure provides a signal processing method, a signal processing apparatus, and an electronic device.
According to an aspect of the present disclosure, there is provided a signal processing method including:
detecting a charging state of the electronic device;
adjusting the amplitude of the scanning signal according to the charging state;
the scanning signal is used for scanning a touch panel of the electronic equipment to obtain a scanning result for determining a touch position.
In one possible implementation, adjusting the amplitude of the scan signal according to the charging state includes:
and amplifying the amplitude of the scanning signal or keeping the amplitude of the scanning signal unchanged according to the charging state.
In one possible implementation manner, amplifying or keeping constant the amplitude of the scan signal according to the charging state includes:
amplifying the amplitude of the scanning signal to a first amplitude under the condition that the electronic equipment is in a charging state;
and under the condition that the electronic equipment is in a non-charging state, keeping the amplitude of the scanning signal as a second amplitude, wherein the first amplitude is larger than the second amplitude.
In one possible implementation, adjusting the amplitude of the scan signal according to the charging state includes:
determining a corresponding driving voltage according to the charging state;
and adjusting the amplitude of the scanning signal according to the driving voltage.
In one possible implementation, the amplitude of the scan signal increases with an increase in the driving voltage, or the amplitude of the scan signal decreases with a decrease in the driving voltage.
In one possible implementation, determining the corresponding driving voltage according to the charging state includes:
determining a first voltage as a driving voltage when the electronic device is in a charging state;
determining a second voltage as a driving voltage under the condition that the electronic equipment is in a non-charging state; wherein the first voltage is greater than the second voltage.
In one possible implementation, determining the corresponding driving voltage according to the charging state includes:
the driving voltage is selected from a plurality of different candidate voltages according to a state of charge of the electronic device.
According to another aspect of the present disclosure, there is provided a signal processing apparatus including:
the first module is used for detecting the charging state of the electronic equipment;
the second module is used for adjusting the amplitude of the scanning signal according to the charging state;
the scanning signal is used for scanning a touch panel of the electronic equipment to obtain a scanning result for determining a touch position.
In one possible implementation manner, the second module includes:
and the first unit is used for amplifying the amplitude of the scanning signal or keeping the amplitude of the scanning signal unchanged according to the charging state.
In a possible implementation manner, the first unit is configured to amplify an amplitude of a scan signal to a first amplitude value when the electronic device is in a charging state; keeping the amplitude of the scanning signal as a second amplitude unchanged under the condition that the electronic equipment is in a non-charging state; wherein the first amplitude is greater than the second amplitude.
In one possible implementation manner, the second module includes:
the first circuit is used for determining corresponding driving voltage according to the charging state;
and the second unit is used for adjusting the amplitude of the scanning signal according to the driving voltage.
In one possible implementation, the amplitude of the scan signal increases with an increase in the driving voltage, or the amplitude of the scan signal decreases with a decrease in the driving voltage.
In one possible implementation, the first circuit includes:
a first input terminal for inputting a first voltage;
a second input terminal for inputting a second voltage; wherein the first voltage is greater than the second voltage;
a third input end for inputting a charging state indicating signal of the electronic device;
a third unit, configured to determine that the first voltage is the driving voltage when the charging state indication signal indicates that the electronic device is in a charging state; determining a second voltage as a driving voltage under the condition that the indication signal indicates that the electronic equipment is in a non-charging state;
and the output end is used for outputting the driving voltage.
In one possible implementation, the first circuit is configured to: the driving voltage is selected from a plurality of different candidate voltages according to a state of charge of the electronic device.
According to another aspect of the present disclosure, an electronic device is provided, which includes the signal processing apparatus described above.
In one possible implementation, the electronic device includes at least one of: mobile phones, computers, digital broadcast terminals, game consoles, tablet devices, medical devices, fitness devices, personal digital assistants.
According to the signal processing method, the signal processing device and the electronic equipment, the intensity of the scanning signal can be automatically adjusted under different charging states of the electronic equipment, so that the signal-to-noise ratio is improved, and the influence of charger noise in the touch scanning process is reduced; and the processes of noise detection and frequency hopping are not needed, the area of a hardware circuit and the participation of software control are reduced, and the response speed of touch detection is improved.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 shows a flow diagram of a signal processing method according to an embodiment of the present disclosure;
fig. 2 shows a flow diagram of a signal processing method according to an embodiment of the present disclosure;
FIG. 3 shows a block diagram of a signal processing apparatus according to an embodiment of the present disclosure;
FIG. 4 shows a schematic structural diagram of a first circuit according to an embodiment of the present disclosure;
fig. 5 illustrates a structural diagram of a control device of a touch panel according to an embodiment of the present disclosure;
fig. 6 shows a block diagram of an electronic device for signal processing according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
Touch screens are widely used in more and more electronic devices, and users can operate the electronic devices through the touch screens. The capacitive touch screen judges the touched position by detecting capacitance change when a finger touches, however, when the electronic device is charged, noise generated by the charger is injected into the touch screen, so that the problems of touch jumping or sliding disconnection and the like are caused, and the normal use of a user is influenced.
In the related method for suppressing the noise of the charger, the most common method is to add the scanning of the noise frequency in the scanning process of the touch screen, detect the frequency bands with higher noise, and then avoid the frequencies to carry out normal scanning so as to achieve the purpose of resisting the interference. According to the scheme, the noise detection and frequency hopping process needs to be carried out for multiple times to avoid interference, however, the steps need to be repeated when the noise frequency changes, and the response speed of the touch scanning process is influenced.
Therefore, the embodiment of the present disclosure provides a signal processing method, a signal processing apparatus, and an electronic device, which can respectively use scanning signals with different intensities in different charging states, so as to reduce the influence of charger noise in a touch scanning process; in addition, the touch control device does not need to use a specific hardware circuit or a software algorithm to process noise, reduces circuit area cost and improves response speed of the touch control device.
Fig. 1 shows a flow diagram of a signal processing method according to an embodiment of the present disclosure. As shown in fig. 1, the method may include the steps of:
and step S10, detecting the charging state of the electronic equipment.
The charging state of the electronic device may be divided into a charging state and a non-charging state, and before the amplitude of the scanning signal is adjusted, the charging state of the electronic device at present needs to be acquired, and for example, the real-time charging state of the electronic device may be acquired through a component having a power supply monitoring function in the electronic device; the charging state detection unit may also be arranged to detect the charging state of the electronic device in real time, which is not limited herein.
And step S20, adjusting the amplitude of the scanning signal according to the charging state.
The scanning signal is used for scanning the touch panel to obtain a scanning result for determining the touch position.
According to the embodiment of the disclosure, scanning signals with different intensities can be adopted in different charging states, so that the influence of noise of the charger in the touch scanning process is reduced; in addition, the noise is not processed by a special hardware circuit or a software algorithm, so that the circuit area cost is reduced, and the response speed of the touch device is improved.
In one possible implementation, the amplitude of the scan signal may be amplified or kept constant according to a charging state of the electronic device. Therefore, scanning signals with different intensities can be adopted in different charging states, and the influence of noise of the charger in the touch scanning process is reduced.
In one possible implementation, the amplitude of the scan signal may be amplified to a first amplitude when the electronic device is in a charging state, and the amplitude of the scan signal may be kept unchanged to a second amplitude when the electronic device is in a non-charging state, where the first amplitude is greater than the second amplitude. Namely, the amplitude of the scanning signal in the charging state is higher than that in the non-charging state, so that the influence of noise of the charger in the touch scanning process is reduced.
There are various ways to adjust the amplitude of the scan signal according to the charging state, which is not limited in this disclosure.
In one possible implementation, in step S20, the adjusting the amplitude of the scan signal according to the charging state may include the following steps:
determining a corresponding driving voltage according to the charging state;
and adjusting the amplitude of the scanning signal according to the driving voltage.
After the real-time charging state of the electronic equipment is detected, the corresponding driving voltage can be selected according to the different charging states, so that the amplitude of the scanning signal can be adjusted by respectively selecting different driving voltages in the charging state and the non-charging state, and the noise interference of the charger can be effectively resisted.
In one possible implementation, the driving voltage may be selected from a plurality of different candidate voltages according to a charging state of the electronic device.
In order to respectively determine different driving voltages when the electronic equipment is in a charging state and a non-charging state, a voltage division circuit and the like can be used for carrying out voltage division processing on a power supply voltage to obtain a plurality of candidate voltages with different voltage values, and then the driving voltage respectively corresponding to the current charging state is selected from the plurality of candidate voltages; the method for dividing the power voltage is not limited, so that the corresponding driving voltage of the electronic device in the charging and non-charging states can be selected from a plurality of candidate voltages according to various factors such as the external working environment (such as temperature, humidity and the like) and the internal environment of the electronic device, the driving voltage in different environments can be dynamically adjusted, and the applicability of charger noise interference resistance is improved.
For example, the power supply chip in the electronic device may divide the power supply voltage to obtain four candidate voltages with different voltage values: for example, the first voltage V1 is 1.2V, the second voltage V2 is 1.1V, the third voltage V3 is 1.3V, and the fourth voltage V4 is 1.4V. And then two voltages can be selected from the first voltage, the second voltage, the third voltage and the fourth voltage according to various factors such as external working environment, internal environment and the like and respectively used as corresponding driving voltages of the electronic equipment in a charging state and a non-charging state. For example, a first voltage and a second voltage, or a second voltage and a third voltage are selected. The first voltage, the second voltage, the third voltage, and the fourth voltage may include a rated operating voltage of the touch panel, such as: the second voltage V2 is 1.1V.
In one possible implementation, the determining the driving voltage according to the charging state of the electronic device may include:
determining the first voltage as a driving voltage under the condition that the electronic equipment is in a charging state;
determining the second voltage as a driving voltage under the condition that the electronic equipment is in a non-charging state; wherein the first voltage is greater than the second voltage.
In the determination of the driving voltage, the driving voltage for the electronic device in the charging state is larger than the driving voltage for the electronic device in the non-charging state, so that the driving voltage is increased to resist the influence of noise in the case of charger noise. Meanwhile, the high voltage is selected as the driving voltage only in the charging process, so that the power consumption is effectively controlled, and the normal service time of the electronic equipment is not influenced.
In the embodiment of the disclosure, the driving voltage can be automatically switched according to different charging states of the electronic device by means of a voltage switching circuit and the like. For example, the voltage switching circuit may further determine and select the selected two driving voltages (e.g., the first voltage V1 and the second voltage V2) respectively corresponding to the electronic device in the charging state and the non-charging state according to the charging state indicating signal, and select the first voltage V1 as the driving voltage when the charging state indicating signal indicates that the electronic device is in the charging state; when the charging state indicating signal indicates that the electronic equipment is in the non-charging state, selecting a second voltage V2 as a driving voltage; that is, the rated operating voltage 1.1V is selected as the driving voltage when the electronic device is not charged, and the voltage 1.2V is selected as the driving voltage when the electronic device is charged.
And adjusting the amplitude of the scanning signal according to the driving voltage determined in the step, further scanning the touch panel by using the scanning signal to obtain a scanning result, and determining the touch position by using the scanning result.
In one possible implementation, the amplitude of the scan signal varies with the magnitude of the driving voltage. The circuit with the scanning signal generation function in the related technology can be adopted, the corresponding scanning signal is generated through the input driving voltage, meanwhile, the amplitude of the scanning signal and the driving voltage can have a qualitative relation, the intensity of the scanning signal can be changed by changing the size of the driving voltage under the condition that charger noise exists, and the influence of the noise on the position judgment of the touch screen can be effectively inhibited.
In one possible implementation, the amplitude of the scan signal increases with an increase in the driving voltage, or the amplitude of the scan signal decreases with a decrease in the driving voltage; for example, when the amplitude of the scanning signal increases with the increase of the driving voltage, the intensity of the scanning signal can be further improved by increasing the driving voltage under the condition of charger noise, and the influence of the noise on the position judgment of the touch screen can be effectively suppressed.
For example, fig. 2 is a flowchart illustrating a signal processing method according to an embodiment of the disclosure, as shown in fig. 2, the first voltage V1 drives the scan signal during the charging process, and the second voltage V2 drives the scan signal after the charging process is terminated; specifically, whether the electronic device is in a charging state or not is detected, and when the electronic device is in an uncharged state, a second voltage V2(1.1V) is selected to drive a scanning signal and sent to the touch panel for finger position detection; when the electronic device is in a charging state, a first voltage V1(1.2V) can be selected to drive a scanning signal and send the scanning signal to the touch panel for finger position detection; meanwhile, in the charging process, whether the electronic equipment exits from the charging state is detected in real time; if not, continuing to drive the scanning signal to scan by using the driving voltage V1; when the electronic device exits the charging state, the second voltage V2(1.1V) is selected to drive the scan signal and send it to the touch panel for finger touch position detection.
In one possible implementation, in step S20, the adjusting the amplitude of the scan signal according to the charging state may further include: and under the condition of keeping the driving voltage constant, adjusting the amplitude of the scanning signal according to the charging state. Therefore, the amplitude of the scanning signal can be changed along with the difference of the charging state of the electronic equipment without dividing the power supply voltage into a plurality of driving voltages, and the influence of noise on the position judgment of the touch screen is effectively inhibited.
For example, the second voltage V2(1.1V) may be selected as a constant driving voltage, and the scanning signal may be generated by the driving voltage when the electronic device is not charged; in the case where the electronic device is charging, the amplitude of the scanning signal may be increased by an adjustable gain amplifier or the like.
It should be noted that, although the signal processing method is described above by taking the above-mentioned embodiment as an example, those skilled in the art can understand that the present disclosure should not be limited thereto. In fact, the user can flexibly set each implementation mode according to personal preference and/or actual application scene, as long as the technical scheme of the disclosure is met.
Therefore, according to the signal processing method disclosed by the embodiment of the disclosure, the intensity of the scanning signal can be automatically adjusted under different charging states of the electronic equipment, so that the signal-to-noise ratio is improved, and the influence of the noise of the charger in the touch scanning process is reduced. And the processes of noise detection and frequency hopping are not needed, the area of a hardware circuit and the participation of software control are reduced, and the response speed of touch detection is improved.
Fig. 3 illustrates a block diagram of a signal processing apparatus according to an embodiment of the present disclosure. As shown in fig. 3, the apparatus may include: a first module 31 for detecting a charging state of the electronic device; a second module 32, configured to adjust an amplitude of the scanning signal according to the charging state; the scanning signal is used for scanning the touch panel to obtain a scanning result for determining the touch position.
In a possible implementation manner, the second module may include: the first unit is used for amplifying the amplitude of the scanning signal or keeping the amplitude of the scanning signal unchanged according to the charging state of the electronic equipment. Therefore, scanning signals with different intensities can be adopted in different charging states, and the influence of noise of the charger in the touch scanning process is reduced.
In a possible implementation manner, the first unit is configured to amplify the amplitude of the scan signal to a first amplitude when the electronic device is in a charging state, and keep the amplitude of the scan signal unchanged to a second amplitude when the electronic device is in a non-charging state; wherein the first amplitude is greater than the second amplitude.
For example, the first unit may be a multiplexer including an amplifier, and the generated original scan signal may be input to the multiplexer in the second module. The first branch of the multi-path selector directly outputs the scanning signal without amplification, and the second branch of the multi-path selector amplifies the scanning signal and then outputs the scanning signal. The charging state indicating signal can be sent to the multiplexer, if the electronic equipment is in a charging state, the charging state indicating signal controls the second branch circuit to be gated, the amplitude of the scanning signal is amplified to be a first amplitude, if the electronic equipment is in a non-charging state, the charging state indicating signal controls the first branch circuit to be gated, the scanning signal is directly output without being amplified, and the amplitude is kept unchanged to be a second amplitude. The above is merely an example of the first unit, and the present disclosure does not limit the specific structure of the first unit.
In a possible implementation manner, the second module may include: the first circuit is used for determining corresponding driving voltage according to the charging state; and the second unit is used for adjusting the amplitude of the scanning signal according to the driving voltage. Therefore, the amplitude of the scanning signal is adjusted by respectively selecting different driving voltages in different charging states, and the noise interference of the charger can be effectively resisted.
In one possible implementation, the amplitude of the scan signal varies with the magnitude of the driving voltage. The circuit with the scanning signal generation function in the related technology can be adopted, the corresponding scanning signal is generated through the input driving voltage, meanwhile, the amplitude of the scanning signal and the driving voltage have a qualitative relation, the intensity of the scanning signal can be changed by changing the size of the driving voltage under the condition that charger noise exists, and the influence of the noise on the position judgment of the touch screen is effectively inhibited.
In one possible implementation, the amplitude of the scan signal increases with an increase in the driving voltage, or the amplitude of the scan signal decreases with a decrease in the driving voltage; for example, the amplitude of the scanning signal increases with the increase of the driving voltage, and the intensity of the scanning signal can be further improved by increasing the driving voltage under the condition of charger noise, so that the influence of the noise on the position judgment of the touch screen is effectively suppressed.
The driving voltage is a voltage capable of driving the second unit to work, the specific circuit structure of the second unit can be selected as required, and accordingly, the input mode of the driving voltage can also be adaptively selected according to the circuit structure.
In one possible implementation, the first circuit may be configured to: the driving voltage is selected from a plurality of different candidate voltages according to a state of charge of the electronic device. Exemplarily, the power supply voltage can be divided through a power supply chip in the electronic device to obtain a plurality of candidate voltages with different voltage values, and then the obtained plurality of voltage values are input to the first circuit, and the first circuit selects the corresponding driving voltage according to the charging state, so that the driving voltages under different environments can be dynamically adjusted, and the applicability of charger noise interference resistance is improved.
In a possible implementation manner, fig. 4 shows a schematic structural diagram of a first circuit according to an embodiment of the present disclosure, and as shown in fig. 4, the first circuit may include: a first input terminal, a second input terminal, a third unit, and an output terminal; wherein, the first input terminal (input1) is used for inputting a first voltage; a second input terminal (input2) for inputting a second voltage; wherein the first voltage is greater than the second voltage; -a third input (sel) for inputting a charge state indication signal of the electronic device; a third unit, configured to determine that the first voltage is the driving voltage when the charging state indication signal indicates that the electronic device is in a charging state; determining a second voltage as a driving voltage under the condition that the indication signal indicates that the electronic equipment is in a non-charging state; an output terminal (output) for outputting the driving voltage. Illustratively, the first input (input1) and the second input (input2) may be electrically connected to two voltage-dividing output ports of a power chip in the electronic device, respectively. The first circuit may further include a plurality of input terminals, and the power supply chip may include a plurality of voltage division output terminals, so that a plurality of different candidate voltages obtained by dividing the power supply voltage are input to the third unit through the plurality of input terminals, and two driving voltages are selected from the plurality of candidate voltages. The specific structure of the first circuit may be implemented according to the related art, and the present disclosure does not limit the specific structure of the first circuit.
It should be noted that, in the embodiment of the present disclosure, the first circuit is switched to the high voltage only during the charging process, so as to effectively control the power consumption, and not to affect the normal use time of the electronic device. Meanwhile, the circuit structure becomes simple, and a special noise detection and processing circuit is not needed, so that the power consumption is further reduced.
In a possible implementation manner, the first module may acquire a charging state indicating signal of the electronic device. Further, the first module may be connected to the first circuit, and the obtained charge state indication signal of the electronic device is input to the third unit through a third input terminal of the first circuit, and the third unit selects a driving voltage of the touch panel scanning signal according to the charge state indication signal. The first module can determine the charging state of the electronic device by detecting the power supply voltage and other related technologies and generate a charging state indicating signal.
In a possible implementation manner, the second module may further include: and the fourth unit is used for adjusting the amplitude of the scanning signal according to the charging state under the condition of keeping the driving voltage constant. Therefore, the amplitude of the scanning signal can be changed along with the difference of the charging state of the electronic equipment without dividing the power supply voltage into a plurality of driving voltages, and the influence of noise on the position judgment of the touch screen is effectively inhibited.
For example, the fourth unit may include an adjustable gain amplifier, which inputs a constant driving voltage, and adjusts a gain of the amplifier according to the charge state indicating signal, thereby changing the amplitude of the scan signal.
In one possible implementation, fig. 5 shows a structural diagram of a control device of a touch panel according to an embodiment of the present disclosure; as shown in fig. 5, the control device may be connected to the touch panel and the main processor, so as to achieve charger noise interference resistance; the control device may include: a scanning signal generating module 501, a sending channel 502, a receiving channel 503 and a touch position reporting module 504; the scanning signal generating module may be the signal processing apparatus shown in fig. 3, and is configured to generate corresponding scanning signals according to different charging states; a sending channel: the scanning signal generating module is used for generating a scanning signal, sending the scanning signal to the touch panel for touch scanning, and generating a scanning result which can be used for determining a touch position when the touch panel is touched and the amplitude intensity of the scanning signal changes; the receiving channel is used for receiving the scanning result of the touch signal in the touch panel; and the touch position reporting module is used for reporting the scanning result received by the receiving channel to units such as a main processor of the electronic equipment.
It should be noted that, although the signal processing device and the control device of the touch panel are described above by taking the above embodiments as examples, those skilled in the art can understand that the disclosure should not be limited thereto. In fact, the user can flexibly set each implementation mode according to personal preference and/or actual application scene, as long as the technical scheme of the disclosure is met.
Therefore, the signal processing device and the control device of the touch panel according to the embodiments of the disclosure can automatically adjust the intensity of the scanning signal under different charging states of the electronic device, thereby improving the signal-to-noise ratio and reducing the influence of the charger noise in the touch scanning process. And the processes of noise detection and frequency hopping are not needed, the area of a hardware circuit and the participation of software control are reduced, and the response speed of touch detection is improved.
Based on this, the embodiment of the present disclosure also provides an electronic device, and fig. 6 shows a block diagram of an electronic device 800 for signal processing according to an embodiment of the present disclosure. The electronic device may comprise the signal processing means described above and shown in fig. 3.
In one possible implementation, the electronic device 800 may include at least one of: mobile phones, computers, digital broadcast terminals, game consoles, tablet devices, medical devices, fitness devices, personal digital assistants, and the like.
Referring to fig. 6, electronic device 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.
The processing component 802 generally controls overall operation of the electronic device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices 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.
Power components 806 provide power to the various components of device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.
The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and a user. 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 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the electronic device 800 is in an operation mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 800 is in an operational 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 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, 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 assembly 814 includes one or more sensors for providing various aspects of state assessment for the electronic device 800. For example, the sensor assembly 814 may detect an open/closed state of the electronic device 800, the relative positioning of components, such as a display and keypad of the apparatus 800, the sensor assembly 814 may also detect a change in position of the electronic device 800 or a component of the electronic device 800, the presence or absence of user contact with the apparatus 800, orientation or acceleration/deceleration of the electronic device 800, and a change in temperature of the electronic device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 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 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 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 electronic device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (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, such as the memory 804, is also provided that includes computer program instructions executable by the processor 820 of the electronic device 800 to perform the above-described methods.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (16)
1. A signal processing method, comprising:
detecting a charging state of the electronic device;
adjusting the amplitude of the scanning signal according to the charging state;
the scanning signal is used for scanning a touch panel of the electronic equipment to obtain a scanning result for determining a touch position.
2. The method of claim 1, wherein adjusting the amplitude of the scanning signal based on the charging state comprises:
and amplifying the amplitude of the scanning signal or keeping the amplitude of the scanning signal unchanged according to the charging state.
3. The method of claim 2, wherein amplifying or keeping constant the amplitude of the scan signal according to the charging state comprises:
amplifying the amplitude of the scanning signal to a first amplitude under the condition that the electronic equipment is in a charging state;
keeping the amplitude of the scanning signal as a second amplitude unchanged under the condition that the electronic equipment is in a non-charging state; wherein the first amplitude is greater than the second amplitude.
4. The method of claim 1, wherein adjusting the amplitude of the scanning signal based on the charging state comprises:
determining a corresponding driving voltage according to the charging state;
and adjusting the amplitude of the scanning signal according to the driving voltage.
5. The method of claim 4, wherein the amplitude of the scan signal increases with an increase in the driving voltage or the amplitude of the scan signal decreases with a decrease in the driving voltage.
6. The method of claim 4, wherein determining the corresponding driving voltage based on the state of charge comprises:
determining a first voltage as a driving voltage when the electronic device is in a charging state;
determining a second voltage as a driving voltage under the condition that the electronic equipment is in a non-charging state; wherein the first voltage is greater than the second voltage.
7. The method of claim 4, wherein determining the corresponding driving voltage based on the state of charge comprises:
the driving voltage is selected from a plurality of different candidate voltages according to a state of charge of the electronic device.
8. A signal processing apparatus, characterized by comprising:
the first module is used for detecting the charging state of the electronic equipment;
the second module is used for adjusting the amplitude of the scanning signal according to the charging state;
the scanning signal is used for scanning a touch panel of the electronic equipment to obtain a scanning result for determining a touch position.
9. The apparatus of claim 8, wherein the second module comprises:
and the first unit is used for amplifying the amplitude of the scanning signal or keeping the amplitude of the scanning signal unchanged according to the charging state.
10. The apparatus of claim 9, wherein the first unit is configured to amplify an amplitude of a scan signal to a first amplitude value if the electronic device is in a charging state; keeping the amplitude of the scanning signal as a second amplitude unchanged under the condition that the electronic equipment is in a non-charging state; wherein the first amplitude is greater than the second amplitude.
11. The apparatus of claim 9, wherein the second module comprises:
the first circuit is used for determining corresponding driving voltage according to the charging state;
and the second unit is used for adjusting the amplitude of the scanning signal according to the driving voltage.
12. The apparatus of claim 11, wherein the amplitude of the scan signal increases with an increase in the driving voltage or the amplitude of the scan signal decreases with a decrease in the driving voltage.
13. The apparatus of claim 11, wherein the first circuit comprises:
a first input terminal for inputting a first voltage;
a second input terminal for inputting a second voltage; wherein the first voltage is greater than the second voltage;
a third input end for inputting a charging state indicating signal of the electronic device;
a third unit, configured to determine that the first voltage is the driving voltage when the charging state indication signal indicates that the electronic device is in a charging state; determining a second voltage as a driving voltage under the condition that the indication signal indicates that the electronic equipment is in a non-charging state;
and the output end is used for outputting the driving voltage.
14. The apparatus of claim 11, wherein the first circuit is configured to:
the driving voltage is selected from a plurality of different candidate voltages according to a state of charge of the electronic device.
15. An electronic device, characterized in that the electronic device comprises a signal processing arrangement according to any of claims 8-14.
16. The electronic device of claim 15, wherein the electronic device comprises at least one of: mobile phones, computers, digital broadcast terminals, game consoles, tablet devices, medical devices, fitness devices, personal digital assistants.
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| CN112328121A (en) * | 2020-11-27 | 2021-02-05 | 北京集创北方科技股份有限公司 | Electronic device, method and electronic equipment |
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