CN109873636B - Frequency adjustment method and mobile terminal - Google Patents

Abstract

The invention provides a frequency adjustment method and a mobile terminal, wherein the method comprises the following steps: determining a frequency change rate of the crystal oscillator; judging the magnitude relation between the frequency change rate and the first frequency change rate threshold value; and if the frequency change rate is greater than or equal to the first frequency change rate threshold, adjusting the temperature change speed of the target heat source in the heat sources based on the frequency change rate so that the frequency change rate is smaller than the first frequency change rate threshold. According to the technical scheme provided by the embodiment of the invention, the influence of temperature change on the frequency of the crystal oscillator can be reduced, so that the satellite capturing time length can be reduced and the positioning precision can be improved.

Description

Frequency adjustment method and mobile terminal

technical field

The present invention relates to the field of terminals, in particular to a frequency adjustment method and a mobile terminal.

Background technique

At present, many mobile terminals such as mobile phones and vehicle-mounted computers have built-in positioning devices, and positioning devices such as GPS (Global Positioning System, Global Positioning System) are more and more widely used. A stable local clock signal is required in the positioning device to be accurate. position.

In one technical solution, the mobile terminal uses a quartz crystal oscillator to provide a local clock signal. However, quartz crystal oscillators have the inherent characteristic of "temperature drift", that is, the frequency of the crystal oscillator changes with changes in temperature. Therefore, in this technical solution, since the frequency of the crystal oscillator changes with temperature, the satellite acquisition time of the positioning device will be prolonged or the satellite will be lost in a scene of temperature change.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a frequency adjustment method and a mobile terminal to solve the problem that the satellite acquisition time of the positioning device becomes longer or the satellite is lost because the frequency of the crystal oscillator changes with temperature.

In order to solve the above-mentioned technical problems, the embodiment of the present invention is implemented as follows:

In the first aspect, an embodiment of the present invention provides a method for adjusting the frequency of a crystal oscillator, which is applied to a mobile terminal. The mobile terminal includes the crystal oscillator and a heat source. The frequency adjustment method includes: determining the frequency of the crystal oscillator The frequency change rate of the device; judge the size relationship between the frequency change rate and the first frequency change rate threshold; if the frequency change rate is greater than or equal to the first frequency change rate threshold, then based on the frequency change rate to the The temperature change rate of the target heat source among the heat sources is adjusted so that the frequency change rate is smaller than the first frequency change rate threshold.

In a second aspect, an embodiment of the present invention provides a mobile terminal, the mobile terminal includes a crystal oscillator and a heat source, and the mobile terminal further includes: a frequency offset determination module, configured to determine the frequency change rate of the crystal oscillator ; Judging module, used to judge the size relationship between the frequency change rate and the first frequency change rate threshold; Adjusting module, if the frequency change rate is greater than or equal to the first frequency change rate threshold, based on the The frequency change rate adjusts the temperature change speed of a target heat source among the heat sources, so that the frequency change rate is smaller than the first frequency change rate threshold.

In a third aspect, an embodiment of the present invention provides a mobile terminal, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, the computer program being executed by the processor During execution, the steps of the frequency adjustment method described in the first aspect above are realized.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the frequency as described in the above-mentioned first aspect is realized. Steps in the tuning method.

According to the technical solution of the embodiment of the present invention, on the one hand, when the frequency change rate of the crystal oscillator is greater than or equal to the first frequency change rate threshold, the temperature change speed of the target heat source is adjusted based on the frequency change rate, which can reduce the temperature change The impact on the frequency of the crystal oscillator can reduce the satellite acquisition time and improve the positioning accuracy; on the other hand, because there is no need for a temperature-sensitive crystal and an analog-to-digital conversion circuit with an integrated thermistor, the cost can be reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 shows a schematic block diagram of an application scenario of a frequency adjustment method provided according to some embodiments of the present invention;

Fig. 2 shows a schematic flowchart of a frequency adjustment method provided according to some embodiments of the present invention;

Fig. 3 shows a schematic flowchart of a frequency adjustment method provided according to another embodiment of the present invention;

Fig. 4 shows a schematic flowchart of a frequency adjustment method provided according to still other embodiments of the present invention;

Fig. 5 shows a schematic flowchart of a frequency adjustment method provided according to some further embodiments of the present invention;

Figure 6 shows a schematic block diagram of a mobile terminal provided according to some embodiments of the present invention; and

Fig. 7 shows a schematic block diagram of a mobile terminal provided according to some embodiments of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Fig. 1 shows a schematic block diagram of an application scenario of a frequency adjustment method provided according to some embodiments of the present invention. Referring to FIG. 1 , the frequency adjustment method is applied to a mobile terminal 100 , the mobile terminal 100 includes a crystal oscillator 110 and a heat source, and the heat source includes a CPU 120 , a power amplifier 130 and a charging module 140 . The crystal oscillator 110 can generate a frequency signal to provide a local clock signal. The heat generated by a heat source such as the CPU 120, the power amplifier 130 or the charging module 140 will cause the temperature of the crystal oscillator 110 to change, resulting in a frequency signal generated by the crystal oscillator 110. frequency changes.

It should be noted that the mobile terminals in FIG. 1 include but are not limited to smart terminals such as mobile phones, tablet computers, computers, wearable devices, and vehicle-mounted computers. The frequency adjustment method according to an exemplary embodiment of the present invention will be described below with reference to FIG. 2 in conjunction with the application scenario of FIG. 1 . It should be noted that the above application scenarios are only shown for the purpose of understanding the spirit and principle of the present invention, and the embodiments of the present invention are not limited in this respect. On the contrary, the embodiments of the present invention can be applied to any applicable scene.

Fig. 2 shows a schematic flowchart of a frequency adjustment method provided according to some embodiments of the present invention. The frequency adjustment method includes steps S210 to S230, and can be applied to the mobile terminal in FIG. 1 , where the mobile terminal includes a crystal oscillator and a heat source. The frequency input method in the example embodiment of FIG. 2 will be described in detail below.

Referring to FIG. 2, in step S210, the frequency change rate of the crystal oscillator is determined.

In an exemplary embodiment, before positioning, the frequency change rate Δf of the crystal oscillator is detected, and the frequency change rate of the crystal oscillator represents the amount of frequency change per unit time, such as per second, and the unit is ppb/s.

It should be noted that, in the exemplary embodiment, the crystal oscillator can be an ordinary crystal oscillator, a voltage-controlled crystal oscillator, or other suitable crystal oscillators such as a temperature compensated crystal oscillator, a digitally compensated crystal oscillator device, which is not specifically limited in the present invention.

In step S220, a magnitude relationship between the frequency change rate and a first frequency change rate threshold is determined.

In an example embodiment, after the frequency change rate of the crystal oscillator is determined, it is determined whether the frequency change rate of the crystal oscillator is greater than or equal to the first frequency change rate threshold Δf ₀ . The first frequency change rate threshold is the frequency change rate threshold allowed by the positioning device such as GPS (Global Positioning System, Global Positioning System), that is, the frequency change rate allowed by the positioning device to work normally, the first frequency change rate threshold and the crystal oscillation It is related to the frequency stability of the device and the positioning accuracy of the positioning device.

It should be noted that, in example embodiments, the first frequency change rate threshold may be the frequency change rate threshold allowed by the positioning device, or may be smaller than the frequency change rate threshold allowed by the positioning device, which is also within the protection scope of the present invention.

In step S230, if the frequency change rate is greater than or equal to the first frequency change rate threshold, adjust the temperature change speed of the target heat source among the heat sources based on the frequency change rate, so that the frequency The rate of change is less than the first frequency rate of change threshold.

In an example embodiment, if the frequency change rate of the crystal oscillator is greater than or equal to the first frequency change rate threshold, then based on the frequency change rate, the temperature change rate of the target heat source among the heat sources of the mobile terminal is adjusted, so that the crystal oscillator The frequency change rate of the sensor is less than the first frequency change rate threshold, so that satellites can be captured quickly and positioned accurately. The target heat source in the heat sources of the mobile terminal may include at least one of a CPU (Central Processing Unit, central processing unit), a radio frequency power amplifier, and a charging module, and the target heat source may also include other suitable heat sources such as a Bluetooth module or a WiFi (Wireless- Fidelity, wireless fidelity) module, which is also within the protection scope of the present invention.

Specifically, when the frequency change rate of the crystal oscillator is greater than or equal to the first frequency change rate threshold, if the target heat source includes a CPU, then adjust the operating frequency of the CPU based on the frequency change rate of the crystal oscillator; and/or, if the target The heat source includes a radio frequency power amplifier, then adjust the transmission power of the radio frequency power amplifier based on the frequency change rate of the crystal oscillator; and/or, if the target heat source includes a charging module, then adjust the charging of the charging module based on the frequency change rate of the crystal oscillator current.

According to the frequency adjustment method in the exemplary embodiment of FIG. 2 , on the one hand, when the frequency change rate of the crystal oscillator is greater than or equal to the first frequency change rate threshold, the temperature change rate of the target heat source is adjusted based on the frequency change rate, The impact of temperature changes on the frequency of the crystal oscillator can be reduced, thereby reducing the satellite acquisition time and improving positioning accuracy; on the other hand, since there is no need for a temperature-sensitive crystal and an analog-to-digital conversion circuit integrating a thermistor, the cost can be reduced.

The following describes the case where the target heat source includes a CPU, a radio frequency power amplifier or a charging module. Where the target heat source includes a CPU, in an example embodiment, the operating frequency of the CPU is decreased if the rate of change of the frequency of the crystal oscillator is negative, or increased if the rate of change of the frequency of the crystal oscillator is positive. High operating frequency of the CPU.

Where the target heat source includes a radio frequency power amplifier, in an example embodiment, the transmit power of the radio frequency power amplifier is reduced if the rate of change of frequency of the crystal oscillator is negative; or if the rate of change of frequency of the crystal oscillator is positive value, the transmit power of the RF power amplifier is increased.

Where the target heat source includes a charging module, in an example embodiment, if the rate of change of frequency of the crystal oscillator is negative, the charging current of the charging module is reduced; or if the rate of change of frequency of the crystal oscillator is positive, Then increase the charging current of the charging module.

In addition, if the adjustment of the temperature change rate of the target heat source is stopped when the frequency change rate of the crystal oscillator is just lower than the first frequency change rate threshold, it will cause frequent adjustments to the target heat source and affect the normal operation of the mobile terminal. . Therefore, in an example embodiment, if the frequency change rate of the crystal oscillator is less than the first frequency rate change threshold, it is determined whether the frequency change rate of the crystal oscillator is less than the second frequency change rate threshold; if the crystal oscillator frequency If the rate of change is less than the second frequency rate of change threshold, stop adjusting the heat source, the second frequency rate of change threshold is less than the first frequency rate of change threshold, and the second frequency rate of change threshold is consistent with the frequency of the crystal oscillator degree and the positioning accuracy of the positioning device. By setting the second frequency change rate threshold, frequent adjustment of the temperature change rate of the target heat source can be avoided, and the adjustment efficiency can be improved.

Fig. 3 shows a schematic flowchart of a frequency adjustment method provided according to other embodiments of the present invention.

Referring to FIG. 3 , in step S310, according to the layout of the crystal oscillator in the mobile terminal, a variety of temperature change scenarios are preset, that is, a temperature rise scenario and a temperature drop scenario. (Power Amplifier, power amplifier) starts to transmit at least one scene, and the charging module starts to charge; the cooling scene includes at least one scene in which the CPU stops heavy load work, the radio frequency PA stops transmitting, and the charging module stops charging.

In step S320, the first frequency change rate threshold Δf ₀ is set. The first frequency change rate threshold is the frequency change allowed by the positioning device such as GPS, that is, the frequency change allowed by the positioning device to work normally. The first frequency change rate The threshold is related to the frequency stability of the crystal oscillator and the positioning accuracy of the positioning device. By adjusting the magnitude of the first frequency change rate threshold, the response speed for adjusting the heat source can be dynamically adjusted.

In step S330, the frequency change rate Δf of the crystal oscillator is determined, and the frequency change rate of the crystal oscillator represents the amount of frequency change per unit time, for example, per second.

In step S340, it is judged whether the frequency change rate Δf of the crystal oscillator is less than the first frequency change rate threshold Δf ₀ , if it is less than the first frequency change rate threshold Δf ₀ , proceed to step S350; if it is greater than or equal to the first frequency change rate threshold Δf ₀ , proceed to step S360.

In step S360, it is judged whether the value of the frequency change rate Δf of the crystal oscillator is a positive value or a negative value. If it is a negative value, it means that the frequency change rate of the crystal oscillator changes in a negative direction, indicating that it is a heating scene, and then proceed Proceed to step S370; if it is a positive value, it means that the frequency change rate of the crystal oscillator changes positively, indicating that it is a cooling scene, then proceed to step S380.

In step S370, reduce the temperature rise rate of the heat source, for example, reduce the operating frequency of the CPU, reduce the transmit power of the radio frequency PA, or reduce the charging current of the charging module, and alleviate the temperature change rate of the crystal oscillator by reducing the temperature rise rate of the heat source;

In step S380, reduce the cooling speed of the heat source, for example, increase the operating frequency of the CPU, increase the transmitting power of the radio frequency AP, or increase the charging current of the charging module, etc., and alleviate the temperature change of the crystal oscillator by reducing the cooling speed of the heat source Rate.

In step S390, wait for a specific time T1 such as 3s and jump to step S330 to continue determining the frequency change rate Δf of the crystal oscillator.

In the embodiment of the present invention, after waiting for a first predetermined period of time, for example, 3 seconds, the frequency change rate is acquired again, and the relationship between the newly acquired frequency change rate and the first frequency change rate threshold is judged.

Fig. 4 shows a schematic flowchart of a frequency adjustment method provided according to still other embodiments of the present invention.

Referring to FIG. 4 , in step S410, a second frequency change rate threshold Δf ₁ is set, the second frequency change rate threshold is smaller than the above-mentioned first frequency change rate threshold Δf ₀ , and the second frequency change rate threshold Δf ₁ indicates that the crystal For the normal frequency change of the oscillator, if the frequency change rate of the crystal oscillator is within the range of ±Δf ₁ , there is no need to adjust the temperature change speed of the heat source.

In step S415, the frequency change rate Δf of the crystal oscillator is determined, and the frequency change rate of the crystal oscillator represents the amount of frequency change per unit time, for example, per second.

In step S420, it is judged whether the frequency change rate Δf of the crystal oscillator is less than the first frequency change rate threshold Δf ₀ , if it is less than the first frequency change rate threshold Δf ₀ , proceed to step S440; if it is greater than or equal to the first frequency change rate threshold Δf ₀ , proceed to step S425.

In step S425, it is determined whether the value of the frequency change rate Δf of the crystal oscillator is a positive value or a negative value. If it is a negative value, it means that the frequency change of the crystal oscillator is a negative frequency change, indicating that it is a heating scene, and then proceed to Step S430; if it is a positive value, it means that the frequency change of the crystal oscillator is a positive frequency change, indicating that it is a cooling scene, and then proceed to step S435.

In step S430, reduce the heating rate of the heat source, for example, reduce the operating frequency of the CPU, reduce the transmit power of the radio frequency PA, or reduce the charging current of the charging module, and alleviate the temperature change rate of the crystal oscillator by reducing the heating rate of the heat source;

In step S435, reduce the cooling speed of the heat source, for example, increase the operating frequency of the CPU, increase the transmitting power of the radio frequency AP, or increase the charging current of the charging module, etc., and alleviate the temperature change of the crystal oscillator by reducing the cooling speed of the heat source Rate.

In step S440, a positioning device such as GPS performs stable tracking and acquisition of satellite signals, so as to locate the mobile terminal based on the acquired satellite signals.

In step S445, the frequency change rate Δf of the crystal oscillator is determined.

In step S450, it is judged whether the frequency change rate Δf of the crystal oscillator is less than the second frequency change rate threshold Δf ₁ , if less than the second frequency change rate threshold, proceed to step S455; if not less than the second frequency change rate threshold, Then proceed to step S460.

In step S455, cancel the cooling and heating measures for the heat source, for example, stop reducing or increasing the operating frequency of the CPU.

In step S460, wait for a specific time T1 such as 3s and jump to step S415 to continue determining the frequency change rate Δf of the crystal oscillator.

Fig. 5 shows a schematic flowchart of a frequency adjustment method provided according to some further embodiments of the present invention.

With reference to shown in Figure 5, in step S510, judge the size relationship between the frequency change rate Δf of the crystal oscillator and the first frequency change rate threshold value Δf ₀ , if the frequency change rate Δf of the crystal oscillator is less than the first frequency change rate threshold value Δf ₀ , proceed to step S520; if the frequency change rate Δf of the crystal oscillator is greater than or equal to the first frequency change rate threshold Δf ₀ , proceed to step S530.

In step S520, the GPS module of the mobile terminal quickly captures satellite signals and locates the mobile terminal.

In step S530, the temperature change speed of the target heat source among the heat sources of the mobile terminal is adjusted, for example, by inputting a control signal to the target heat source such as CPU, RF PA, etc. to adjust the operating frequency of the CPU or the transmit power of the RF PA.

In step S540, the temperature change rate of the target heat source is changed.

In step S550, the temperature change speed of the crystal oscillator is changed.

In step S560, the amount of frequency variation of the crystal oscillator is determined.

In step S570, determine the frequency change rate Δf of the crystal oscillator, and then proceed to step S510 to form an effective closed-loop control to control the frequency change of the crystal oscillator within the allowable range.

Fig. 6 shows a schematic block diagram of a mobile terminal provided according to some embodiments of the present invention. Referring to FIG. 6 , the mobile terminal 600 includes: a determination module 610 , a first judgment module 620 and an adjustment module 630 . Wherein, the determination module 610 is used to determine the frequency change rate of the crystal oscillator; the first judgment module 620 is used to judge the magnitude relationship between the frequency change rate and the first frequency change rate threshold; the adjustment module 630 is used to determine if the If the frequency change rate is greater than or equal to the first frequency change rate threshold, the temperature change speed of the target heat source among the heat sources is adjusted based on the frequency change rate so that the frequency change rate is smaller than the first frequency Rate of change threshold.

In some embodiments of the present invention, based on the above solution, the target heat source includes at least one of a central processing unit CPU, a radio frequency power amplifier, and a charging module; wherein, the adjustment module includes: a CPU adjustment unit, for if The target heat source includes the CPU, adjust the operating frequency of the CPU based on the frequency change rate; and/or a radio frequency adjustment unit, configured to adjust the frequency based on the frequency if the target heat source includes the RF power amplifier The rate of change adjusts the transmitting power of the radio frequency power amplifier; and/or the charging adjustment unit is configured to adjust the charging current of the charging module based on the frequency change rate if the target heat source includes the charging module.

In some embodiments of the present invention, based on the above solution, the CPU adjustment unit includes: a frequency reduction unit, configured to reduce the operating frequency of the CPU if the frequency change rate is negative; or a frequency increase unit, It is used for increasing the operating frequency of the CPU if the frequency change rate is positive.

In some embodiments of the present invention, based on the above solution, the radio frequency adjustment unit includes: a power reduction unit, configured to reduce the transmit power of the radio frequency power amplifier if the frequency change rate is negative; or, the power An increasing unit, configured to increase the transmission power of the radio frequency power amplifier if the rate of change of the frequency is positive.

In some embodiments of the present invention, based on the above solution, the charging adjustment unit includes: a current reducing unit, configured to reduce the charging current of the charging module if the frequency change rate is negative; and/or increase The current unit is configured to increase the charging current of the charging module if the rate of change of the frequency is positive.

In some embodiments of the present invention, based on the above solution, the mobile terminal further includes: a second judging module, if the frequency change rate is less than the first frequency change rate threshold, then determine whether the frequency change rate is less than A second frequency change rate threshold, the second frequency change rate threshold is less than the first frequency change rate threshold; a stop adjustment unit, configured to stop adjusting the frequency change rate if the frequency change rate is less than the second frequency change rate threshold The heat source is adjusted.

In some embodiments of the present invention, based on the above solution, after adjusting the temperature change speed of the target heat source among the heat sources, the first judging module 620 is configured to: re-judgment frequency after a first predetermined time period The relationship between the change rate and the first frequency change rate threshold.

FIG. 7 is a schematic diagram of a hardware structure of a mobile terminal provided by an embodiment of the present invention. As shown in FIG. 7, the mobile terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, and an input unit 704 , sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, processor 710, power supply 711 and other components. Those skilled in the art can understand that the structure of the mobile terminal shown in FIG. 7 does not constitute a limitation on the mobile terminal, and the mobile terminal may include more or less components than shown in the figure, or combine some components, or different components layout. In the embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, and a pedometer.

Wherein, the mobile terminal also includes a crystal oscillator and a heat source, and a computer program is stored in the memory 709. When the computer program is executed by the processor 710, the following process can be realized: determine the frequency change rate of the crystal oscillator; determine the The magnitude relationship between the frequency change rate and the first frequency change rate threshold; if the frequency change rate is greater than or equal to the first frequency change rate threshold, the temperature of the target heat source in the heat source is calculated based on the frequency change rate The change speed is adjusted so that the frequency change rate is smaller than the first frequency change rate threshold.

Optionally, the target heat source includes at least one of a central processing unit CPU, a radio frequency power amplifier, and a charging module; Adjusting the temperature change rate of the target heat source includes: if the target heat source includes the CPU, adjusting the operating frequency of the CPU based on the frequency change rate; and/or if the target heat source includes the radio frequency power amplifier , then adjust the transmitting power of the radio frequency power amplifier based on the frequency change rate; and/or if the target heat source includes the charging module, adjust the charging current of the charging module based on the frequency change rate.

Optionally, when the computer program is executed by the processor 810, the adjusting the operating frequency of the CPU based on the frequency change rate includes: reducing the operating frequency of the CPU if the frequency change rate is negative. ; or if the rate of change of the frequency is a positive value, increasing the operating frequency of the CPU.

Optionally, when the computer program is executed by the processor 810, the adjusting the transmit power of the radio frequency power amplifier based on the frequency change includes: if the frequency change rate is negative, reducing the radio frequency power amplifier transmit power; or if the rate of change of frequency is positive, increasing the transmit power of the radio frequency power amplifier.

Optionally, when the computer program is executed by the processor 810, the adjusting the charging current of the charging module based on the frequency change rate includes: reducing the charging current of the charging module if the frequency change rate is negative. current; or if the rate of change of the frequency is positive, increasing the charging current of the charging module.

Optionally, when the computer program is executed by the processor 810, the frequency adjustment method further includes: if the frequency change rate is less than the first frequency change rate threshold, determining whether the frequency change rate is less than a second frequency rate of change threshold, the second frequency rate of change threshold is less than the first frequency rate of change threshold; if the frequency rate of change is less than the second frequency rate of change threshold, stop controlling the temperature of the target heat source in the heat sources Adjust the speed of change.

Optionally, when the computer program is executed by the processor 810, after adjusting the temperature change speed of the target heat source among the heat sources, the frequency adjustment method further includes: re-judging the The magnitude relationship between the frequency change rate and the first frequency change rate threshold.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 701 can be used to receive and send signals during sending and receiving information or during a call. Specifically, the downlink data from the base station is received and processed by the processor 710; in addition, the Uplink data is sent to the base station. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 701 can also communicate with the network and other devices through a wireless communication system.

The mobile terminal provides users with wireless broadband Internet access through the network module 702, such as helping users send and receive emails, browse web pages, and access streaming media.

The audio output unit 703 may convert audio data received by the radio frequency unit 701 or the network module 702 or stored in the memory 709 into an audio signal and output as sound. Also, the audio output unit 703 can also provide audio output related to a specific function performed by the mobile terminal 700 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 703 includes a speaker, a buzzer, a receiver, and the like.

The input unit 704 is used to receive audio or video signals. The input unit 704 may include a graphics processor (Graphics Processing Unit, GPU) 7041 and a microphone 7042, and the graphics processor 7041 is used for still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The data is processed. The processed image frames may be displayed on the display unit 706 . The image frames processed by the graphics processor 7041 may be stored in the memory 709 (or other storage media) or sent via the radio frequency unit 701 or the network module 702 . The microphone 7042 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 701 for output in the case of a phone call mode.

The mobile terminal 700 also includes at least one sensor 705, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 7061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 7061 and the / or backlighting. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is still, and can be used to identify the posture of mobile terminals (such as horizontal and vertical screen switching, related games, etc.) , magnetometer posture calibration), vibration recognition-related functions (such as pedometer, knocking), etc.; the sensor 705 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be repeated here.

The display unit 706 is used to display information input by the user or information provided to the user. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like.

The user input unit 707 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the mobile terminal. Specifically, the user input unit 707 includes a touch panel 7071 and other input devices 7072 . The touch panel 7071, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 7071 or near the touch panel 7071). operate). The touch panel 7071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the For the processor 710, receive the command sent by the processor 710 and execute it. In addition, the touch panel 7071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 7071 , the user input unit 707 may also include other input devices 7072 . Specifically, other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.

Furthermore, the touch panel 7071 can be covered on the display panel 7061. When the touch panel 7071 detects a touch operation on or near it, it will be sent to the processor 710 to determine the type of the touch event. The type of event provides a corresponding visual output on the display panel 7061. Although the touch panel 7071 and the display panel 7061 are used as two independent components to realize the input and output functions of the mobile terminal, in some embodiments, the touch panel 7071 and the display panel 7061 can be integrated to realize the mobile terminal. The input and output functions are not limited here.

The interface unit 708 is an interface for connecting an external device to the mobile terminal 700 . For example, an external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 708 can be used to receive input from an external device (for example, data information, power, etc.) transfer data between devices.

The memory 709 can be used to store software programs as well as various data. The memory 709 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of mobile phones (such as audio data, phonebook, etc.), etc. In addition, the memory 709 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The processor 710 is the control center of the mobile terminal, which uses various interfaces and lines to connect various parts of the entire mobile terminal, by running or executing software programs and/or modules stored in the memory 709, and calling data stored in the memory 709 , execute various functions of the mobile terminal and process data, so as to monitor the mobile terminal as a whole. The processor 710 may include one or more processing units; preferably, the processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem The processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 710 .

The mobile terminal 700 can also include a power supply 711 (such as a battery) for supplying power to various components. Preferably, the power supply 711 can be logically connected to the processor 710 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. and other functions.

In addition, the mobile terminal 700 includes some functional modules not shown, which will not be repeated here.

The mobile terminal in the embodiment of the present application can implement each process of the aforementioned frequency adjustment method, and achieve the same effect and function, which will not be repeated here.

Furthermore, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above frequency adjustment method embodiment is implemented, and can achieve The same technical effects are not repeated here to avoid repetition. Wherein, the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the above-mentioned embodiments of the present invention.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, without departing from the gist of the present invention and the protection scope of the claims, many forms can also be made, all of which belong to the protection of the present invention.

Claims (15)

1. A frequency adjustment method, applied to a mobile terminal, the mobile terminal comprising a crystal oscillator and a heat source, characterized in that, the frequency adjustment method comprises: determining a rate of change of frequency of the crystal oscillator; judging the magnitude relationship between the frequency change rate and the first frequency change rate threshold; If the frequency change rate is greater than or equal to the first frequency change rate threshold, then adjust the temperature change rate of the target heat source among the heat sources based on the frequency change rate, so that the frequency change rate is less than the The first frequency change rate threshold. 2. The frequency adjustment method according to claim 1, wherein the target heat source comprises at least one of a central processing unit CPU, a radio frequency power amplifier, and a charging module; Wherein, the adjusting the temperature change speed of the target heat source among the heat sources based on the frequency change rate includes: If the target heat source includes the CPU, adjusting the operating frequency of the CPU based on the frequency change rate; and/or If the target heat source includes the radio frequency power amplifier, adjusting the transmission power of the radio frequency power amplifier based on the frequency change rate; and/or If the target heat source includes the charging module, adjusting the charging current of the charging module based on the frequency change rate. 3. The frequency adjustment method according to claim 2, wherein the adjusting the operating frequency of the CPU based on the frequency change rate comprises: If the rate of change of the frequency is negative, then reduce the operating frequency of the CPU; or If the frequency change rate is positive, then increase the operating frequency of the CPU. 4. The frequency adjustment method according to claim 2, wherein the adjusting the transmission power of the RF power amplifier based on the frequency change rate comprises: If the rate of change of the frequency is negative, reducing the transmit power of the radio frequency power amplifier; or If the rate of change of the frequency is positive, then increase the transmission power of the radio frequency power amplifier. 5. The frequency adjustment method according to claim 2, wherein the adjusting the charging current of the charging module based on the frequency change rate comprises: If the rate of change of the frequency is negative, then reduce the charging current of the charging module; or If the rate of change of the frequency is positive, the charging current of the charging module is increased. 6. The frequency adjustment method according to claim 1, wherein the frequency adjustment method further comprises: If the frequency rate of change is less than the first frequency rate of change threshold, then determine whether the frequency rate of change is less than a second frequency rate of change threshold, the second frequency rate of change threshold is less than the first frequency rate of change threshold; If the frequency change rate is smaller than the second frequency change rate threshold, stop adjusting the temperature change rate of the target heat source among the heat sources. 7. The frequency adjustment method according to any one of claims 1 to 6, characterized in that, after adjusting the temperature change speed of the target heat source in the heat sources, the frequency adjustment method further comprises: After the first predetermined period of time, re-judging the magnitude relationship between the frequency change rate and the first frequency change rate threshold. 8. A kind of mobile terminal, described mobile terminal comprises crystal oscillator and heat source, it is characterized in that, described mobile terminal also comprises: A determining module, configured to determine the frequency change rate of the crystal oscillator; A first judgment module, configured to judge the magnitude relationship between the frequency change rate and the first frequency change rate threshold; An adjustment module, configured to adjust the temperature change speed of a target heat source among the heat sources based on the frequency change rate if the frequency change rate is greater than or equal to the first frequency change rate threshold, so that the frequency The rate of change is less than the first frequency rate of change threshold. 9. The mobile terminal according to claim 8, wherein the target heat source comprises at least one of a central processing unit CPU, a radio frequency power amplifier, and a charging module; Wherein, the adjustment module includes: A CPU adjustment unit, configured to adjust the operating frequency of the CPU based on the frequency change rate if the target heat source includes the CPU; and/or A radio frequency adjustment unit, configured to adjust the transmission power of the radio frequency power amplifier based on the frequency change rate if the target heat source includes the radio frequency power amplifier; and/or A charging adjustment unit, configured to adjust the charging current of the charging module based on the frequency change rate if the target heat source includes the charging module. 10. The mobile terminal according to claim 9, wherein the CPU adjusting unit comprises: a frequency reduction unit, configured to reduce the operating frequency of the CPU if the rate of change of the frequency is negative; or A frequency increasing unit, configured to increase the operating frequency of the CPU if the frequency change rate is positive. 11. The mobile terminal according to claim 9, wherein the radio frequency adjustment unit comprises: A power reduction unit, configured to reduce the transmission power of the radio frequency power amplifier if the rate of change of the frequency is negative; or, A power increasing unit, configured to increase the transmission power of the radio frequency power amplifier if the rate of change of the frequency is positive. 12. The mobile terminal according to claim 9, wherein the charging adjustment unit comprises: a current reducing unit, configured to reduce the charging current of the charging module if the rate of change of the frequency is negative; or A current boosting unit, configured to increase the charging current of the charging module if the rate of change of the frequency is positive. 13. The mobile terminal according to claim 8, further comprising: A second judging module, configured to determine whether the frequency change rate is less than a second frequency change rate threshold if the frequency change rate is less than the first frequency change rate threshold, and the second frequency change rate threshold is less than the a first frequency change rate threshold; The stop adjustment unit is configured to stop adjusting the temperature change speed of a target heat source among the heat sources if the frequency change rate is smaller than the second frequency change rate threshold. 14. A mobile terminal, characterized in that it comprises: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, the following The steps of the frequency adjustment method according to any one of claims 1 to 7. 15. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is realized. Steps of the frequency adjustment method.

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