CN109088961B - Sensor control circuit and electronic device - Google Patents
Sensor control circuit and electronic device Download PDFInfo
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- CN109088961B CN109088961B CN201810621596.5A CN201810621596A CN109088961B CN 109088961 B CN109088961 B CN 109088961B CN 201810621596 A CN201810621596 A CN 201810621596A CN 109088961 B CN109088961 B CN 109088961B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/22—Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector
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- Computer Networks & Wireless Communication (AREA)
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- Controls And Circuits For Display Device (AREA)
Abstract
The embodiment of the application discloses a sensor control circuit and an electronic device, wherein the sensor control circuit comprises a level generation circuit, a detection circuit, an infrared sensor and a power supply module; the sensor control circuit is applied to an electronic device comprising a touch display screen, and the infrared sensor is arranged below the touch display screen; the level generating circuit is used for generating corresponding level pulses according to the working mode of the touch display screen; the detection circuit is used for detecting the level pulse, determining the working mode of the touch display screen according to the level pulse, and controlling the power supply module to stop supplying power to the infrared sensor when the working mode of the touch display screen is a bright screen mode. By implementing the embodiment of the application, the phenomenon of screen flashing of the touch display screen can be avoided.
Description
Technical Field
The application relates to the technical field of communication, in particular to a sensor control circuit and an electronic device.
Background
With the increasing popularity of electronic devices such as mobile phones, the appearance of the mobile phones has also changed significantly. Full screen handsets have become the focus of current research. In the case of a full screen, the location of many sensors (e.g., infrared sensors, ambient light sensors, etc.) on the handset may need to be rearranged. Currently, infrared sensors are typically placed under the screen. However, in the bright screen state, the infrared sensor under the screen can cause the phenomenon of screen flickering.
Disclosure of Invention
The embodiment of the application provides a sensor control circuit and an electronic device, which can avoid the phenomenon of screen flashing of a touch display screen.
In a first aspect of the embodiments of the present application, a sensor control circuit is provided, where the control circuit includes a level generating circuit, a detection circuit, an infrared sensor, and a power supply module; the control circuit is applied to an electronic device comprising a touch display screen, and the infrared sensor is arranged below the touch display screen;
the level generating circuit is used for generating corresponding level pulses according to the working mode of the touch display screen;
the detection circuit is used for detecting the level pulse, determining the working mode of the touch display screen according to the level pulse, and controlling the power supply module to stop supplying power to the infrared sensor when the working mode of the touch display screen is a bright screen mode.
In a second aspect of the embodiments of the present application, an electronic device is provided, where the electronic device includes a touch display screen, a touch screen sensor and a control circuit provided in the first aspect of the embodiments of the present application, the control circuit includes a level generating circuit, a detection circuit, an infrared sensor and a power module, the infrared sensor is disposed below the touch display screen, and the touch display screen is a full screen;
the infrared sensor is used for carrying out proximity detection when the working mode of the touch display screen is a bright screen mode;
the touch screen sensor is used for carrying out proximity detection when the working mode of the touch display screen is a screen-off mode or an AOD mode.
In the embodiment of the application, the sensor control circuit comprises a level generating circuit, a detection circuit, an infrared sensor and a power supply module; the sensor control circuit is applied to an electronic device comprising a touch display screen, and the infrared sensor is arranged below the touch display screen; the level generating circuit is used for generating corresponding level pulses according to the working mode of the touch display screen; the detection circuit is used for detecting the level pulse, determining the working mode of the touch display screen according to the level pulse, and controlling the power supply module to stop supplying power to the infrared sensor when the working mode of the touch display screen is a bright screen mode. In the embodiment of the application, when the touch display screen works in the bright screen mode, the control power supply module stops supplying power to the infrared sensor, the infrared sensor is guaranteed to be out of work in the bright screen mode from the aspect of hardware design, the situation that the touch display screen is mistakenly opened in the bright screen mode due to the fact that a bug (bug) appears in software control is prevented from occurring, the phenomenon of screen flashing of the touch display screen is avoided, and the display effect of the touch display screen is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application;
FIG. 2 is a sensor control circuit disclosed in an embodiment of the present application;
FIG. 3 is a schematic display diagram of an electronic device in AOD mode according to an embodiment of the present disclosure;
FIG. 4 is another sensor control circuit disclosed in an embodiment of the present application;
FIG. 5 is another sensor control circuit disclosed in an embodiment of the present application;
fig. 6 is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, system, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The electronic device according to the embodiment of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like. For convenience of description, the above-mentioned apparatuses are collectively referred to as electronic devices.
The following describes embodiments of the present application in detail.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application, and as shown in fig. 1, the electronic device 100 includes a touch display screen 21, a touch screen sensor 22, and a control circuit 10; the control circuit 10 comprises a detection circuit 11, a power supply module 12, an infrared sensor 13 and a level generation circuit 14, wherein the infrared sensor 13 is arranged below the touch display screen 21;
the infrared sensor 13 is used for performing proximity detection when the working mode of the touch display screen 21 is a bright screen mode;
the touch screen sensor 22 is configured to perform proximity detection when the operating mode of the touch display screen 21 is an off-screen mode or an AOD mode, where the touch display screen 21 is a full-screen.
In the embodiment of the present application, the touch display screen 21 is a full screen, which means that the touch display screen 21 is on the whole front surface of the electronic device 100, and when the touch display screen 21 is a full screen, the infrared sensor cannot be set by opening a hole on the whole front surface of the electronic device 100. The embodiment of the present application arranges the infrared sensor 13 under the touch display screen 21.
A Touch Panel (TP) sensor 22, also referred to as a TP sensor. The TP sensor 22 and the infrared sensor 13 can perform proximity detection for detecting a distance between the touch display screen 21 and an external object.
The TP sensor may include a plurality of detection units, the plurality of detection units are distributed on each pixel point of the display screen, and when the capacitance of one or more pixel points changes, it may be determined that an object is close to or far away from the one or more pixel points.
The infrared sensor 13 may include an infrared LED for emitting infrared light outward, and a photoelectric sensing device for detecting infrared light, and the infrared light emitted from the infrared LED is emitted from below the touch display screen 21 to above the touch display screen 21 and reaches an external object. The photoelectric sensing device is used for receiving the intensity of infrared light reflected by an external object to determine whether the external object approaches and the distance between the external object and the touch display screen 21. The foreign object may be a body organ of the user (e.g., a finger, cheek, etc.).
Since the infrared sensor 13 is disposed below the touch display screen 21, if the infrared sensor 13 and the touch display screen 21 work simultaneously, when the touch display screen 21 works in a bright screen mode, especially when a white screen is displayed, a screen flash phenomenon may occur when the infrared sensor 13 is activated for proximity detection.
In the embodiment of the application, when the working mode of the touch display screen 21 is the bright screen mode, the power supply of the infrared sensor 13 is turned off, and the proximity detection is performed through the touch screen sensor 22; when the working mode of the touch display screen 21 is the screen-off mode or the AOD mode, the infrared sensor 13 is used for proximity detection, and the fact that the infrared sensor does not work in the screen-on mode is guaranteed from the aspect of hardware design, so that the phenomenon of screen flashing of the touch display screen is avoided, and the display effect of the touch display screen is improved.
Referring to fig. 2, fig. 2 is a sensor control circuit according to an embodiment of the disclosure. As shown in fig. 2, the sensor control circuit 10 includes a detection circuit 11, a power supply module 12, an infrared sensor 13, and a level generation circuit 14; the control circuit 10 is applied to an electronic device including a touch display screen, and the infrared sensor 13 is disposed below the touch display screen;
the level generating circuit 14 is configured to generate a corresponding level pulse according to a working mode of the touch display screen;
the detection circuit 11 is configured to detect the level pulse, determine a working mode of the touch display screen according to the level pulse, and control the power module 12 to stop supplying power to the infrared sensor 13 when the working mode of the touch display screen is a bright screen mode.
In this embodiment of the application, the touch display screen can work in a bright screen mode, an off screen display (AOD) mode and an off screen mode. In the screen lightening mode, all pixel points of the whole screen of the touch display screen are lightened, and in the screen extinguishing mode, all pixel points of the whole screen of the touch display screen are extinguished.
The AOD mode, which may also be referred to as a normal display mode, is a display mode in which a partial area of a touch display screen of an electronic device (e.g., a mobile phone) is kept normally bright in a screen-locked state. In the AOD mode, information such as time and notification may be displayed in a partial area of the touch display screen.
Referring to fig. 3, fig. 3 is a schematic display diagram of an electronic device in an AOD mode according to an embodiment of the present disclosure. As shown in fig. 3, the display area of the touch display screen of the electronic device occupies a very small area of the entire touch display screen, the display area is used for displaying information such as time and date notification messages, and other areas of the touch display screen except the display area are not displayed and are in a black screen state. Because only partial area of the touch display screen is lighted, the power consumption of the AOD mode can be very low, and the touch display screen is convenient and fast for a user who is used to check the electronic device (such as a mobile phone) without frequently lighting the screen of the mobile phone and unlocking the mobile phone.
The user may manually turn on or off the AOD mode, for example, in a setting option of the electronic device, an AOD mode selection button may be set, and the user may manually click the AOD mode turn-on or turn-off button to turn on the AOD mode or turn off the AOD mode.
It should be noted that the infrared sensor 13 is disposed below the touch display screen, and the vertical projection of the infrared sensor 13 on the touch display screen is not located in the display area. The display area in the AOD mode is avoided from the infrared sensor 13, so that the interference of the infrared sensor 13 on the display screen in the AOD mode can be avoided.
In the embodiment of the present application, the input terminal 141 of the level generating circuit 14 is connected to the refresh frequency input by the touch display screen; the first output terminal 142 of the level generating circuit 14 is connected to the first input terminal 113 of the detecting circuit 11, the second output terminal 143 of the level generating circuit 14 is connected to the second input terminal 114 of the detecting circuit 11, the power pin 111 of the detecting circuit 11 is connected to the input terminal 121 of the power module 12, and the output pin 112 of the detecting circuit 11 is connected to the power supply terminal 131 of the infrared sensor 13.
The refresh frequency, also referred to as a refresh rate, of the touch display screen refers to the number of times that the screen of the touch display screen is refreshed per second.
And the level generating circuit 14 is configured to generate a corresponding level pulse according to the working mode of the touch display screen.
Optionally, when the operating mode of the touch display screen is a screen-off mode, the level generating circuit 14 generates a low level signal;
when the working mode of the touch display screen is the AOD mode, the level generating circuit 14 generates a single pulse signal;
when the working mode of the touch display screen is the bright screen mode, the level generating circuit 14 generates a periodic pulse signal.
In this embodiment, the level generating circuit 14 may output different level signals to the detecting circuit 11 according to the working mode of the touch display screen for detection, so that the detecting circuit 11 can determine the working mode of the touch display screen according to the level signal output by the level generating circuit 14, thereby controlling whether to supply power to the infrared sensor 13.
When the operating mode of the touch display screen is the off-screen mode, the level generating circuit 14 generates the low level signal, which may be 0V. When the operation mode of the touch display screen is the AOD mode, the single pulse signal generated by the level generating circuit 14 may be a single pulse with a pulse width of 33 ms. When the working mode of the touch display screen is the bright screen mode, the level generating circuit 14 generates a periodic pulse signal. The high level of the periodic pulse signal may be 3.3V, the high level of the periodic pulse signal may be 0V, and the frequency of the periodic pulse signal may be 60 Hz.
Specifically, the level generation circuit 14 detects the operation mode of the touch display screen by detecting the refresh frequency of the touch display screen. For example, when the refresh frequency of the touch display screen is at the refresh frequency (for example, 60Hz) corresponding to the bright screen mode, the level generating circuit 14 determines that the touch display screen operates in the bright screen mode; when the refresh frequency of the touch display screen is located at the refresh frequency (for example, 30Hz) corresponding to the AOD mode, the level generation circuit 14 determines that the touch display screen operates in the AOD mode; when the refresh frequency of the touch display screen is at the refresh frequency (e.g., 0Hz) corresponding to the screen-off mode, the level generation circuit 14 determines that the touch display screen is operating in the screen-off mode.
Generally speaking, when the touch display screen is in a bright screen mode, in order to ensure the display effect, the refresh frequency of the touch display screen is set to be 60 Hz; when the touch display screen is in the AOD mode, in order to reduce the power consumption of the touch display screen, the refreshing frequency of the touch display screen is set to be 30 Hz; when the touch display screen is in the screen-off mode, the touch display screen does not work, and the refreshing frequency of the touch display screen is 0.
Optionally, the detection circuit 11 is further configured to control the power module 12 to stop supplying power to the infrared sensor 13 when the operating mode of the touch display screen is the screen-off mode or the screen-off display AOD mode.
When the touch display screen works in the screen-off mode or the screen-off display AOD mode, the infrared sensor 13 arranged below the touch display screen cannot cause the phenomenon that the touch display screen flickers. Therefore, when the screen-off mode or the screen-off display AOD mode is performed, the infrared sensor 13 is turned on, and proximity detection is performed by the infrared sensor 13.
In the embodiment of the application, in order to ensure that the infrared sensor does not work when the touch display screen works in the bright screen mode, the detection circuit controls the power supply module to stop supplying power to the infrared sensor. Can guarantee from hardware design that infrared sensor is out of work under the bright screen mode, and then avoid the touch-control display screen phenomenon of twinkling of a screen to appear, improve the display effect of touch-control display screen.
Optionally, the touch display screen is driven by a display driving module, the display driving module includes a Tearing Effect (TE) pin, and the TE pin is configured to transmit a level signal to the touch display screen at a refresh frequency when the touch display screen works.
Optionally, the input terminal 14 of the level generating circuit 14 is connected to the TE pin of the display driving module, the first output terminal 142 of the level generating circuit 14 is connected to the first input terminal 113 of the detecting circuit 11, and the second output terminal 143 of the level generating circuit 14 is connected to the second input terminal 114 of the detecting circuit 11.
In this embodiment, when the level generating circuit 14 detects that the touch display screen operates in different modes (the screen-off mode, the AOD mode, and the screen-on mode), the first output terminal 142 and the second output terminal 143 of the level generating circuit 14 may output different level signals to the detecting circuit 11 for detection.
Optionally, as shown in fig. 4, the detection circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a first switch transistor T1, a second switch transistor T2, a third switch transistor T3, and a fourth switch transistor T4;
a first terminal of the first resistor R1 is connected to the first output terminal 142 of the level generating circuit 14, a second terminal of the first resistor R1 is connected to the first terminal of the first capacitor C1 and the gate of the first switch transistor T1, a second terminal of the first capacitor C1 and the source of the first switch transistor T1 are grounded, a drain of the first switch transistor T1 is connected to the first terminal of the second resistor R2 and the gate of the second switch transistor T2, a source of the second switch transistor T2 is grounded, a drain of the second switch transistor T2 is connected to the first terminal of the third resistor R3, the drain of the third switch transistor T3 and the gate of the fourth switch transistor T4, a source of the third switch transistor T3 is grounded, a gate of the third switch transistor T3 is connected to the second output terminal 143 of the level generating circuit 14, a source of the fourth switch transistor T4, the second end of the third resistor R3 and the second end of the second resistor R2 are connected to the output end 121 of the power module 12, and the drain of the fourth switch tube T4 is connected to the power supply end of the infrared sensor 13.
In this embodiment, when the first output terminal 142 and the second output terminal 143 of the level generating circuit 14 can output different level signals, the detecting circuit 11 can control the power module 12 to supply power to the infrared sensor 13, or control the power module 12 to stop supplying power to the infrared sensor 13.
The first switch tube T1, the second switch tube T2, the third switch tube T3, and the fourth switch tube T4 may be metal-oxide-semiconductor (MOS) field effect transistors, Insulated Gate Bipolar Transistors (IGBTs), or semiconductor switch tubes such as a triode.
In the following, the first switch transistor T1, the second switch transistor T2, the third switch transistor T3 and the fourth switch transistor T4 are all NMOS transistors as an example.
When the first output end 142 of the level generating circuit 14 outputs a high level signal and the second output end 143 of the level generating circuit 14 outputs a low level signal, the first switch tube T1 is turned on, the second switch tube T2 is turned off, the third switch tube T3 is turned off, and the fourth switch tube T4 is turned on, at this time, the output end 121 of the power module 12 may be communicated with the power supply end 131 of the infrared sensor 13, and the power module 12 supplies power to the infrared sensor 13;
when the first output end 142 of the level generating circuit 14 outputs a high level signal and the second output end 143 of the level generating circuit 14 outputs a high level signal, the first switch tube T1 is turned on, the second switch tube T2 is turned off, the third switch tube T3 is turned on, and the fourth switch tube T4 is turned off, at this time, the output end 121 of the power module 12 cannot be communicated with the power supply end 131 of the infrared sensor 13, and the power module 12 stops supplying power to the infrared sensor 13;
when the first output end 142 of the level generating circuit 14 outputs a low level signal and the second output end 143 of the level generating circuit 14 outputs a high level signal, the first switch tube T1 is turned off, the second switch tube T2 is turned on, the third switch tube T3 is turned on, and the fourth switch tube T4 is turned off, at this time, the output end 121 of the power module 12 cannot be communicated with the power supply end 131 of the infrared sensor 13, and the power module 12 stops supplying power to the infrared sensor 13;
when the first output end 142 of the level generating circuit 14 outputs a low level signal and the second output end 143 of the level generating circuit 14 outputs a low level signal, the first switch tube T1 is turned off, the second switch tube T2 is turned on, the third switch tube T3 is turned off, and the fourth switch tube T4 is turned off, at this time, the output end 121 of the power module 12 cannot be communicated with the power supply end 131 of the infrared sensor 13, and the power module 12 stops supplying power to the infrared sensor 13.
Wherein, R1 and C1 constitute a filter circuit, which can allow the pulse signals output from the first output terminal 142 and the second output terminal 143 of the level generating circuit 14 to pass through.
Optionally, when the level generating circuit 14 detects that the operating mode of the touch display screen is the screen-off mode or the AOD mode, the first output terminal 142 of the level generating circuit 14 outputs a high level signal, and the second output terminal 143 of the level generating circuit 14 outputs a low level signal.
Optionally, when the level generating circuit 14 detects that the operating mode of the touch display screen is the bright screen mode, the first output terminal 142 of the level generating circuit 14 outputs a high level signal, and the second output terminal 143 of the level generating circuit 14 outputs a high level signal.
In the embodiment of the present application, the low level signal may be 0V, and the high level signal may be 3.3V.
Optionally, as shown in fig. 5, the control circuit 10 further includes a second capacitor C2, a first end of the second capacitor C2 is connected to the power supply terminal of the infrared sensor 13, and a second end of the second capacitor C2 is grounded.
In the embodiment of the present application, the second capacitor C2 plays a role in voltage stabilization, so as to prevent the voltage of the power supply terminal 131 of the infrared sensor 13 from jumping, and ensure the working stability of the infrared sensor 13.
The infrared sensor 13 may be an integrated module, and its power supply terminal is connected to the output terminal 123 of the driving circuit 12.
In the embodiment of the application, when the touch display screen works in the bright screen mode, the control power supply module stops supplying power to the infrared sensor, the infrared sensor is guaranteed to be out of work in the bright screen mode from the aspect of hardware design, the situation that the touch display screen is mistakenly opened in the bright screen mode due to the fact that a bug (bug) appears in software control is prevented from occurring, the phenomenon of screen flashing of the touch display screen is avoided, and the display effect of the touch display screen is improved.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application, the electronic device 100 includes a storage and processing circuit 710, and a communication circuit 720 and an audio component 740 connected to the storage and processing circuit 710, wherein in some specific electronic devices, a display component 730 or a touch component may be further disposed.
The electronic device 100 may include control circuitry that may include the storage and processing circuitry 710. The storage and processing circuit 710 may be a memory, such as a hard disk drive memory, a non-volatile memory (e.g., a flash memory or other electronically programmable read-only memory used to form a solid state drive, etc.), a volatile memory (e.g., a static or dynamic random access memory, etc.), etc., and the embodiments of the present application are not limited thereto. The processing circuitry in the storage and processing circuitry 710 may be used to control the operation of the electronic device 100. The processing circuitry may be implemented based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, display driver integrated circuits, and the like.
The storage and processing circuit 710 may be used to run software in the electronic device 100, such as Voice Over Internet Protocol (VOIP) phone call applications, simultaneous interpretation functions, media playing applications, operating system functions, and so on. Such software may be used to perform control operations such as, for example, camera-based image capture, ambient light measurement based on an ambient light sensor, proximity sensor measurement based on a proximity sensor, information display functions implemented based on a status indicator such as a status indicator light of a light emitting diode, touch event detection based on a touch sensor, operations associated with performing wireless communication functions, operations associated with collecting and generating audio signals, control operations associated with collecting and processing button press event data, and other functions in the electronic device 100, and the like, without limitation to the embodiments of the subject application.
The electronic device 100 may also include input-output circuitry 750. The input-output circuit 750 may be used to enable the electronic apparatus 100 to implement input and output of data, i.e., to allow the electronic apparatus 100 to receive data from an external device and also to allow the electronic apparatus 100 to output data from the electronic apparatus 100 to the external device. Input-output circuit 750 may further include a sensor 770. The sensors 770 may include ambient light sensors, proximity sensors based on light and capacitance, touch sensors (e.g., based on optical touch sensors and/or capacitive touch sensors, where the touch sensors may be part of a touch display screen or used independently as a touch sensor structure), acceleration sensors, and other sensors, among others.
Input-output circuitry 750 may also include a touch sensor array (i.e., display 730 may be a touch display screen). The touch sensor may be a capacitive touch sensor formed by a transparent touch sensor electrode (e.g., an Indium Tin Oxide (ITO) electrode) array, or may be a touch sensor formed using other touch technologies, such as acoustic wave touch, pressure sensitive touch, resistive touch, optical touch, and the like, and the embodiments of the present application are not limited thereto.
The electronic device 100 may also include an audio component 740. The audio component 740 may be used to provide audio input and output functionality for the electronic device 100. The audio components 740 in the electronic device 100 may include a speaker, a microphone, a buzzer, a tone generator, and other components for generating and detecting sound.
The communication circuit 720 may be used to provide the wearable device 100 with the ability to communicate with external devices. The communications circuitry 720 may include analog and digital input-output interface circuitry, and wireless communications circuitry based on radio frequency signals and/or optical signals. The wireless communication circuitry in communication circuitry 720 may include radio-frequency transceiver circuitry, power amplifier circuitry, low noise amplifiers, switches, filters, and antennas. For example, the wireless Communication circuitry in Communication circuitry 720 may include circuitry to support Near Field Communication (NFC) by transmitting and receiving Near Field coupled electromagnetic signals. For example, communications circuitry 720 may include a near field communications antenna and a near field communications transceiver. The communications circuitry 720 may also include a cellular telephone transceiver and antenna, a wireless local area network transceiver circuit and antenna, and so forth.
The electronic device 100 may further include a battery, power management circuitry, and other input-output units 760. Input-output unit 760 may include buttons, joysticks, click wheels, scroll wheels, touch pads, keypads, keyboards, cameras, light emitting diodes or other status indicators, and the like.
A user may enter commands through the input-output circuitry 750 to control the operation of the electronic device 100, and may use the output data of the input-output circuitry 750 to enable receipt of status information and other outputs from the electronic device 100.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A sensor control circuit is characterized by comprising a level generation circuit, a detection circuit, an infrared sensor and a power supply module; the control circuit is applied to an electronic device comprising a touch display screen, and the infrared sensor is arranged below the touch display screen;
the level generating circuit is used for generating corresponding level pulses according to the working mode of the touch display screen;
the detection circuit is used for detecting the level pulse, determining a working mode of the touch display screen according to the level pulse, and controlling the power supply module to stop supplying power to the infrared sensor when the working mode of the touch display screen is a bright screen mode; when the working mode of the touch display screen is a bright screen mode, proximity detection is carried out through a touch screen sensor;
the detection circuit is further used for controlling the power supply module to supply power to the infrared sensor when the working mode of the touch display screen is a screen-off mode or a screen-off display AOD mode; when the working mode of the touch display screen is a screen-off mode or an AOD mode, carrying out proximity detection through the infrared sensor;
when the refreshing frequency of the touch display screen is located at the refreshing frequency corresponding to the screen-off mode, the working mode of the touch display screen is the screen-off mode, when the refreshing frequency of the touch display screen is located at the refreshing frequency corresponding to the AOD mode, the working mode of the touch display screen is the AOD mode, and when the refreshing frequency of the touch display screen is located at the refreshing frequency corresponding to the screen-on mode, the working mode of the touch display screen is the screen-on mode; the level generating circuit generates a corresponding level pulse according to the working mode of the touch display screen, and specifically comprises the following steps:
when the working mode of the touch display screen is the screen-off mode, the level generation circuit generates a low level signal;
when the working mode of the touch display screen is the AOD mode, the level generation circuit generates a single pulse signal;
when the working mode of the touch display screen is the bright screen mode, the level generation circuit generates a periodic pulse signal.
2. The control circuit of claim 1, wherein the touch display screen is driven by a display driver module, the display driver module comprising a Tearing Effect (TE) pin, the TE pin being configured to transmit a level signal to the touch display screen at a refresh frequency when the touch display screen is in operation.
3. The control circuit of claim 2, wherein an input of the level generating circuit is connected to the TE pin, a first output of the level generating circuit is connected to a first input of the detecting circuit, and a second output of the level generating circuit is connected to a second input of the detecting circuit.
4. The control circuit of claim 3, wherein the detection circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor, a first switch tube, a second switch tube, a third switch tube and a fourth switch tube;
the first end of the first resistor is connected with the first output end of the level generation circuit, the second end of the first resistor is connected with the first end of the first capacitor and the grid electrode of the first switch tube, the second end of the first capacitor and the source electrode of the first switch tube are grounded, the drain electrode of the first switch tube is connected with the first end of the second resistor and the grid electrode of the second switch tube, the source electrode of the second switch tube is grounded, the drain electrode of the second switch tube is connected with the first end of the third resistor, the drain electrode of the third switch tube and the grid electrode of the fourth switch tube, the source electrode of the third switch tube is grounded, the grid electrode of the third switch tube is connected with the second output end of the level generation circuit, the source electrode of the fourth switch tube, the second end of the third resistor and the second end of the second resistor are connected with the output end of the power supply module, and the drain electrode of the fourth switching tube is connected with the power supply end of the infrared sensor.
5. The control circuit according to claim 4, wherein when the level generating circuit detects that the operation mode of the touch display screen is the screen-off mode or the AOD mode, the first output terminal of the level generating circuit outputs a high level signal, and the second output terminal of the level generating circuit outputs a low level signal.
6. The control circuit according to claim 4, wherein when the level generating circuit detects that the operation mode of the touch display screen is the bright screen mode, the first output terminal of the level generating circuit outputs a high level signal, and the second output terminal of the level generating circuit outputs a high level signal.
7. The control circuit according to any one of claims 4-6, further comprising a second capacitor, wherein a first terminal of the second capacitor is connected to the power supply terminal of the infrared sensor, and a second terminal of the second capacitor is grounded.
8. An electronic device, comprising a touch display screen, a touch screen sensor, and the control circuit of any one of claims 1-7; the control circuit comprises a level generating circuit, a detection circuit, an infrared sensor and a power supply module, wherein the infrared sensor is arranged below the touch display screen, and the touch display screen is a comprehensive screen;
the touch screen sensor is used for carrying out proximity detection when the working mode of the touch display screen is a bright screen mode;
the infrared sensor is used for carrying out proximity detection when the working mode of the touch display screen is a screen-off mode or an AOD mode.
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| CN109271019B (en) * | 2018-08-22 | 2020-07-10 | Oppo广东移动通信有限公司 | Proximity event detection element switching control method and apparatus |
| CN112637417A (en) * | 2019-09-23 | 2021-04-09 | 深圳市万普拉斯科技有限公司 | Infrared proximity sensor control method and device and mobile terminal |
| CN112102774B (en) * | 2020-09-03 | 2022-01-04 | Oppo广东移动通信有限公司 | Display screen, electronic equipment and processing method |
| CN116962569A (en) * | 2022-02-28 | 2023-10-27 | 荣耀终端有限公司 | Method for switching working modes of approaching optical device and related electronic equipment |
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