CN107302792B - A kind of method and mobile terminal of crystal frequency calibration - Google Patents
A kind of method and mobile terminal of crystal frequency calibration Download PDFInfo
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- CN107302792B CN107302792B CN201710494297.5A CN201710494297A CN107302792B CN 107302792 B CN107302792 B CN 107302792B CN 201710494297 A CN201710494297 A CN 201710494297A CN 107302792 B CN107302792 B CN 107302792B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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Abstract
The invention belongs to RF applications, provide the method and mobile terminal of a kind of crystal frequency calibration.It the described method comprises the following steps: obtaining the first radio-frequency module of operation irregularity in the mobile terminal and the second radio-frequency module of normal work；Using the crystal output frequency of second radio-frequency module as reference frequency, the output frequency of first radio-frequency module is calibrated.The embodiment of the present invention calibrates the output frequency of the radio-frequency module of operation irregularity using the crystal output frequency of radio-frequency module working properly as reference frequency, so that the radio-frequency module of operation irregularity can work normally, realizes the automatic calibration of crystal frequency；To solve the technical issues of crystal breakdown maintenance must return factory in mobile terminal, fast automatic progress crystal output frequency optimization is reached, has saved cost and save time technical effect.
Description
Technical field
The embodiment of the present invention belongs to the method and mobile terminal of RF application more particularly to a kind of calibration of crystal frequency.
Background technique
Universal and its application with mobile terminal is increased, and mobile terminal has become more and more convenient and indispensable
Equipment, all be unable to do without its presence in life, work and study.
But mobile terminal is in use, internal electronic device gradually aging, in addition can inevitably go out in use process
Situations such as now such as falling, touching firmly, such phenomenon run up to a certain amount of, and crystal oscillation system load capacitance and internal performance is caused to occur
Variation causes the frequency of mobile terminal internal crystal oscillator, the error of frequency deviation to increase, so that the crystal output frequency of mobile terminal
Error leads to mobile terminal registration failure synchronous with communication base station beyond range as defined in communication protocol.
Summary of the invention
A kind of method for being designed to provide crystal frequency calibration of the embodiment of the present invention, it is intended to solve in mobile terminal
When crystal output frequency error is larger, mobile terminal cannot registration synchronous with communication base station the problem of.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows: a kind of method of crystal frequency calibration, is applied to
Mobile terminal the described method comprises the following steps:
Obtain the first radio-frequency module of operation irregularity in the mobile terminal and the second radio-frequency module of normal work；
Output using the crystal output frequency of second radio-frequency module as reference frequency, to first radio-frequency module
Frequency is calibrated.
The embodiment of the invention also provides a kind of mobile terminal, the mobile terminal includes:
Acquiring unit, for obtain operation irregularity in the mobile terminal the first radio-frequency module and normal work
Two radio-frequency modules；
Calibration unit, for using the crystal output frequency of second radio-frequency module as reference frequency, to described first
The output frequency of radio-frequency module is calibrated.
The embodiment of the present invention separately provides a kind of mobile terminal, including processor, memory and is stored in the memory
Crystal frequency calibration procedure that is upper and can running on the processor, the crystal frequency calibration procedure are held by the processor
The step of method of the crystal frequency calibration is realized when row.
The embodiment of the present invention further provides a kind of computer readable storage medium, the computer readable storage medium
On be stored with crystal frequency calibration procedure, the crystal frequency is realized when the crystal frequency calibration procedure is executed by processor
The step of method of calibration.
In embodiments of the present invention, using the crystal output frequency of radio-frequency module working properly as reference frequency, to work
The output frequency for making abnormal radio-frequency module is calibrated, so that the radio-frequency module of operation irregularity can work normally, is realized
The automatic calibration of crystal frequency；To solve the technical issues of crystal breakdown maintenance must return factory in mobile terminal, reach
Fast automatic progress crystal output frequency optimization saves cost and saves time technical effect.
Detailed description of the invention
Fig. 1 is the hardware structural diagram of mobile terminal described in the embodiment of the present invention；
Fig. 2 is the flow chart of the method for the crystal frequency calibration that the embodiment of the present invention is applied to mobile terminal；
Fig. 3 is that the embodiment of the present invention judges whether the error of the crystal output frequency of the first radio-frequency module exceeds pre-determined threshold
The step schematic diagram of threshold value；
Fig. 4 is frequency dividing of the embodiment of the present invention and phase shift processing, calculating difference and sentences thresholding schematic diagram；
Fig. 5 is the step schematic diagram that the embodiment of the present invention calibrates the output frequency of the first radio-frequency module；
Fig. 6 is the second adjustment process schematic diagram of the load capacitance value that the embodiment of the present invention adjusts the first radio-frequency module；
The corresponding load capacitance value of optimum network parameter is determined as the first radio-frequency module for the embodiment of the present invention by Fig. 7 to carry out
The step schematic diagram of the object reference capacitance of calibration；
Fig. 8 is the circuit theory schematic diagram of mobile terminal of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, mobile terminal include but is not limited to be such as mobile phone, tablet computer, laptop,
The mobile terminals such as palm PC, navigation device, wearable device, Intelligent bracelet, pedometer.
A kind of hardware structural diagram of Fig. 1 mobile terminal of each embodiment to realize the present invention, the mobile terminal 100
Including but not limited to: radio frequency unit 101, network module 102, audio output unit 103, (audio/video) input unit 104,
Sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, Yi Ji electricity
The components such as source 111.It will be understood by those skilled in the art that mobile terminal structure shown in Fig. 1 is not constituted to mobile terminal
Restriction, mobile terminal may include perhaps combining certain components or different components than illustrating more or fewer components
Arrangement.
It is specifically introduced below with reference to all parts of the Fig. 1 to mobile terminal:
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, signal sends and receivees, specifically, by base station
Downlink information receive after, to processor 110 handle；In addition, the data of uplink are sent to base station.In general, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrating
Frequency unit 101 can also be communicated with network and other equipment by wireless communication.Any communication can be used in above-mentioned wireless communication
Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications
System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code
Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division
Multiple Access, wideband code division multiple access), TD-SCDMA (Time Division-Synchronous Code
Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division
Duplexing-Long Term Evolution, frequency division duplex long term evolution), TDD-LTE (Time Division
Duplexing-Long Term Evolution, time division duplex long term evolution), Wi-Fi module, NFC module and bluetooth module
Deng.
Mobile terminal can help user to send and receive e-mail, browse webpage and access streaming matchmaker by network module 102
Body etc., it provides wireless broadband internet access for user, network module 102 include but is not limited to be RJ45 port module
Deng.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or network module 102 it is received or
The audio data stored in memory 109 is converted into audio signal and exports to be sound.Moreover, audio output unit 103
Audio output relevant to the specific function that mobile terminal 100 executes can also be provided (for example, call signal receives sound, disappears
Breath receives sound etc.).Audio output unit 103 includes loudspeaker, buzzer and receiver etc..
Input unit 104 is for receiving audio or video signal.Input unit 104 may include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 106.Through graphics processor 1041, treated that picture frame can be deposited
Storage is sent in memory 109 (or other storage mediums) or via radio frequency unit 101 or network module 102.Mike
Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042
Quiet down sound (audio data), and can be audio data by such acoustic processing.Audio that treated (voice) data can
To be converted to the format output that can be sent to mobile communication base station via radio frequency unit 101 in the case where telephone calling model.
Mobile terminal 100 further includes at least one sensor 105, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 1061, and proximity sensor can close when mobile terminal 100 is moved in one's ear
Display panel 1061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify answering for mobile terminal posture
With (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion)
Deng；The fingerprint sensor that can also configure as mobile terminal, pressure sensor, iris sensor, molecule sensor, gyroscope,
The other sensors such as barometer, hygrometer, thermometer, infrared sensor, details are not described herein.
Display unit 106 is for showing information input by user or being supplied to the information of user.Display unit 106 can wrap
Display panel 1061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 1061.
User input unit 107 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 107 may include touch panel 1071 with
And other input equipments 1072.Touch panel 1071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 1071 or in touch panel 1071
Neighbouring operation), and corresponding attachment device is driven according to preset formula.Touch panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
It is converted into contact coordinate, then gives processor 110, and order that processor 110 is sent can be received and executed.In addition, can
To realize touch panel 1071 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
It includes but is not limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc.
It is one or more, specifically herein without limitation.
Further, touch panel 1071 can cover display panel 1061, when touch panel 1071 detect on it or
After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing
The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, touch panel 1071 and display panel
1061 be the function that outputs and inputs of realizing mobile terminal as two independent components, but in certain embodiments, it can
The function that outputs and inputs of mobile terminal is realized so that touch panel 1071 and display panel 1061 is integrated, is not done herein specifically
It limits.
Interface unit 108 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example,
External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing
Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number
It is believed that breath, electric power etc.) and the input received is transferred to one or more elements in mobile terminal 100 or can be with
For transmitting data between mobile terminal 100 and external device (ED).
Memory 109 can be used for storing software program and various data.Memory 109 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 109 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 110 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 109, and calls and is stored in storage
Data in device 109 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 110 may include one or more processing units；Preferably, processor 110 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) powered to all parts, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, mobile terminal 100 includes some unshowned functional modules, details are not described herein.
Based on the hardware configuration of above-mentioned mobile terminal, various embodiments of the present invention are described in detail below.
The process for the method that the crystal frequency that Fig. 2 shows provided in an embodiment of the present invention applied to mobile terminal is calibrated,
For ease of description, part related to the embodiment of the present invention is only listed, details are as follows:
As a preferred embodiment of the present invention, the crystal frequency provided in an embodiment of the present invention applied to mobile terminal is calibrated
Method, comprising the following steps:
Step S10 obtains the first radio-frequency module of operation irregularity and the second radio frequency mould of normal work in mobile terminal
Block.
Specifically, the radio-frequency module in mobile terminal mainly includes carrying out network (for example, the standards such as 2G/3G/4G/5G
Network) registration and communication communication radio frequency module and carry out radio-frequency module (such as the Wi-Fi module of wireless LAN communication
Deng).
In embodiments of the present invention, the operation irregularity of radio-frequency module includes that network registry is unsuccessful, can not carry out positive normal open
Letter etc..By taking the mobile terminal of the embodiment of the present invention as an example, usually there are multiple crystal oscillator devices on the mainboard of mobile terminal,
Clock (CLK) signal is provided to disparate modules respectively, guarantees that each module can work normally.One crystal oscillator module can because falling or
Person's device aging reason, occurs that crystal output frequency error is excessive, such as when the crystal output frequency error of communication radio frequency module
When excessive, it will lead to the not upper network phenomenon of communication radio frequency Module registers, so as to cause operation irregularity.But multiple radio-frequency modules
The probability that operation irregularity occurs simultaneously in corresponding crystal oscillator device is relatively low；In general, in a radio-frequency module operation irregularity
When, another radio-frequency module still can be working properly.In example as above, when communication radio frequency module is unable to registered network, operation irregularity
When, Wi-Fi module can still normal registration network, work normally.Therefore a kind of method can be realized inside mobile terminal,
Using the crystal output frequency of Wi-Fi module working properly as reference frequency, to the crystalline substance of the communication radio frequency module of operation irregularity
Body frequency is calibrated, and following step S20 is please referred to.
Step S20, the output using the crystal output frequency of the second radio-frequency module as reference frequency, to the first radio-frequency module
Frequency is calibrated.
In the embodiment of the present invention, the second radio-frequency module is the radio-frequency module worked normally, and the first radio-frequency module is that work is different
Normal radio-frequency module.The embodiment of the present invention is made using the crystal output frequency of radio-frequency module working properly as reference frequency
For carry out calibration process frequency reference, to the output frequency of the corresponding crystal oscillator device of the radio-frequency module of operation irregularity
It is calibrated, so that the radio-frequency module of operation irregularity can work normally, realizes the crystal to the radio-frequency module of operation irregularity
The automatic calibration of frequency；To solve the technical issues of crystal breakdown maintenance must return factory in mobile terminal, reach quick
It is automatic to carry out the optimization of crystal output frequency, save cost and save time technical effect.
The step S10 and S20 of the method for above-mentioned crystal frequency calibration, executing subject are mobile terminal.
As a preferred embodiment of the present invention, using the crystal output frequency of the second radio-frequency module as ginseng in step S20
After the step of examining frequency, and before the step of being calibrated to the output frequency of the first radio-frequency module, further includes:
Judge whether the error of the crystal output frequency of the first radio-frequency module exceeds pre-determined threshold threshold value；
If it is, executing the step of calibrating to the output frequency of the first radio-frequency module.
In practical applications, the reason of radio-frequency module operation irregularity is diversified, it is possible to be not due to crystalline substance
Caused by body frequency error.By taking mobile terminal as an example, when communication radio frequency module is unable to registered network, possible reason includes not
The failure etc. of any link in service area, base station exception, the exception of other electronic devices and register flow path.When the first radio frequency
When the error of the crystal output frequency of module is less than pre-determined threshold, caused by operation irregularity may be other reasons, to it
Crystal output frequency is calibrated the problem of not can solve operation irregularity.
Thus, in the preferred embodiment of the present invention, before the step of output frequency to the first radio-frequency module is calibrated
First judge the crystal frequency error of the radio-frequency module of operation irregularity, if crystal frequency error is more than pre-determined threshold threshold value, just executes
The step of calibration；Otherwise it can be determined that the reason of operation irregularity of the first radio-frequency module is not due to crystal frequency error is caused
, thus calibration steps is not carried out.
Preferred embodiment can orientation problem be accurately crystal output frequency offset issue through the invention, and then execute
The step of to the calibration of crystal output frequency；Avoid all carry out frequency calibration in the operation irregularity of radio-frequency module in any case and
It is unable to solving practical problems.
As shown in figure 3, as a preferred embodiment of the present invention, the crystal output frequency of the first radio-frequency module of above-mentioned judgement
Whether error exceeds the step of pre-determined threshold threshold value, comprising:
Step S21 distinguishes the crystal output frequency of the crystal output frequency of the first radio-frequency module and the second radio-frequency module
Frequency dividing and phase shift processing are carried out, identical first crossover frequency of phase and the second crossover frequency are obtained.
The frequency dividing of the preferred embodiment of the present invention and phase shift processing, can be while to the first radio-frequency module and the second radio frequency mould
Block carries out frequency dividing and phase shift processing, only can also carry out frequency dividing to wherein any one radio-frequency module and phase shift is handled, each
The number of radio-frequency module frequency dividing is also not necessarily identical.It is determined when specific implementation according to the nominal frequency of each functional module, as far as possible
Making the output frequency of two radio-frequency modules after frequency dividing and phase shift has theoretic same frequency and same-phase.
For example, the nominal output frequency of the crystal of a communication radio frequency module is 19.2M, the crystal mark of a Wi-Fi module
Output frequency is referred to as 38.4M, then the frequency of 1 acquisition 19.2M can be divided to the output frequency of Wi-Fi module, and to logical
Letter radio-frequency module does not divide；Communication radio frequency module and Wi-Fi module are subjected to phase shift processing simultaneously, it is identical to be allowed to phase, in this way
Theoretically communication radio frequency module and Wi-Fi module frequency having the same and phase after frequency dividing and phase shift.
In another example, it is assumed that the nominal output frequency of the crystal of A module is 48M, and the nominal output frequency of the crystal of B module is
32M divides B module 2 times, equally also obtains the frequency of 16M then can divide the frequency of 3 acquisition 16M to A module；Together
When two module phase shifts are processed into same phase, theoretically A module and B module are having the same after frequency dividing and phase shift in this way
Frequency and phase.
According to both the above specific embodiment, in the preferred embodiment of the present invention, the crystal of the first radio-frequency module is exported into frequency
The crystal output frequency of rate and the second radio-frequency module carries out frequency dividing and respectively the step of phase shift is handled, and can further comprise: by the
The crystal output frequency F2 of two radio-frequency modules obtains frequency f2 as benchmark after frequency dividing N2 times, the sine wave signal of cycle T 2, i.e.,
Second crossover frequency；The crystal output frequency F1 of first radio-frequency module is divided N1 times and obtains frequency f1, the sine wave of cycle T 1
Signal, i.e. the first crossover frequency.
Step S22, calculates the difference of the first crossover frequency and the second crossover frequency, and judges whether difference exceeds pre- gating
Limit threshold value.
According to above-described embodiment, the first crossover frequency after the first radio-frequency module frequency dividing is f1, the second radio-frequency module frequency dividing
The second crossover frequency afterwards is f2, then the difference of the first crossover frequency and the second crossover frequency is represented by △ f=f2-f1.Root
According to demand, a pre-determined threshold threshold value is set, △ f and pre-determined threshold threshold value are compared, if △ f is greater than or equal to gating and limits threshold
Value, then may determine that the error of the crystal output frequency of the radio-frequency module of operation irregularity is excessive, need to carry out frequency calibration.
Specifically, pre-determined threshold threshold value can be according to the crystal oscillator device of the first radio-frequency module and the second radio-frequency module
The normal work demand of output frequency, the first radio-frequency module and the second radio-frequency module, the radiofrequency signal of mobile terminal require etc. and
It determines, the present invention is not especially limit this.
Preferably, when the value of pre-determined threshold can be according to mobile terminal product export, under kilter, in mobile terminal
Output frequency difference determines between the crystal of two radio-frequency modules.
As Fig. 4 is frequency dividing of the embodiment of the present invention and phase shift processing, calculating difference and sentences thresholding schematic diagram.As shown in figure 4, step
Rapid S21 and step S22 mainly includes carrying out respectively to the parent crystal output frequency of the first radio-frequency module and the second radio-frequency module
The first crossover frequency and the second crossover frequency are obtained after frequency dividing and phase shift, then calculates the first crossover frequency and the second crossover frequency
Difference, then carry out sentencing thresholding, that is, judge the big of the difference of the first crossover frequency and the second crossover frequency and pre-determined threshold threshold value
It is small, and then judging result is provided, foundation is provided to carry out calibration for the output frequency to the first radio-frequency module.If the first frequency dividing
The difference of frequency and the second crossover frequency, which is greater than or equal to, sets threshold value, then needs to be implemented the frequency of the output to the first radio-frequency module
Otherwise the step of rate is calibrated does not execute.
As shown in figure 5, as a preferred embodiment of the present invention, in step S20 to the output frequency of the first radio-frequency module into
The step of row calibration, comprising:
Step S23, the load capacitance value for adjusting the first radio-frequency module subtract difference gradually to change the first crossover frequency
It is small；
In the preferred embodiment of the present invention, load capacitance value is the load of the corresponding crystal oscillator device of the first radio-frequency module
Capacitance.
Wherein, the load capacitance value that step S23 adjusts the first radio-frequency module may is that the load electricity of the first radio-frequency module
Capacitance is repeatedly adjusted according to the sequence being raised and lowered, and obtains multiple regulated values.It is penetrated specifically, first can be obtained first
The present load capacitance of frequency module, according to certain increment or decrement successively to load on the basis of present load capacitance
Capacitance is raised and lowered, and can obtain multiple regulated values in this way.The first crossover frequency can all be changed by adjusting each time, tool
Body is to increase or reduce, according to the actual situation depending on, generally meet: after adjusting, the first radio-frequency module and as benchmark
The difference of crystal output frequency of the second radio-frequency module be gradually reduced.
For example, in the above-described embodiments, by adjusting the load electricity of the corresponding crystal oscillator device of the first radio-frequency module
Capacitance, so as to adjust the first crossover frequency f1 of the first radio-frequency module, so that the first crossover frequency f1 and the second crossover frequency f2
Between difference △ f constantly reduce；The crystal output frequency of the first radio-frequency module is (f2- △ f) * N1, the first radio frequency after adjustment
Crystal output frequency difference △ f between module and the second radio-frequency module levels off to zero.
In the preferred embodiment of the present invention, the load capacitance value of the first radio-frequency module is adjusted in step S23, may include first
Adjustment process or the second adjustment process.
First adjustment process, includes the following steps:
The load capacitance value for adjusting the first radio-frequency module obtains the first radio-frequency module based on the regulated value adjusted each time
Network parameter, until the first radio-frequency module is working properly.It may be noted that obtaining the first radio-frequency module in the first adjustment process
Network parameter can only include obtain the first radio-frequency module whether registered network success, the first radio-frequency module working properly i.e. the
The success of one radio-frequency module registered network.
Second adjustment process, includes the following steps:
The load capacitance value for adjusting the first radio-frequency module obtains the first radio-frequency module based on the regulated value adjusted each time
Network parameter.When the 1st task of the first radio-frequency module is normal, the network parameter of the first radio-frequency module is recorded, i.e., for the first time
Registion time and registration quality when working properly, and it is labeled as first group of index parameter.Continue to adjust the first radio-frequency module
Load capacitance value, until the first radio-frequency module of n-th operation irregularity again；The first radio-frequency module the 2nd time is recorded to the N-1 times just
The network parameter often to work is respectively labeled as second group of index parameter to N-1 group index parameter, as shown in Figure 6.
It is the realization step of the second adjustment process above.The first adjustment process and the second adjustment process are divided below
Analysis.
First adjustment process is completed when the first radio-frequency module is working properly for the first time, i.e., the first radio-frequency module registers net for the first time
It is completed when network success, such regulating time is shorter, and network parameter optimal at this time is that the first radio-frequency module is working properly for the first time
Network parameter.
Second adjustment process includes the first radio-frequency module engineering abnormal, process working properly and operation irregularity again,
First radio-frequency module again operation irregularity when complete, that is, include: when the first radio-frequency module is nonserviceabled registered network failure, adjust
Registered network succeeds and continues to adjust to a certain extent registered network again and fails after section, and regulating time is longer.During this,
First radio-frequency module has 1 time or repeatedly working properly, therefore can obtain 1 time or network parameter i.e. first repeatedly worked normally
Index parameter is organized to N-1 group index parameter.
By being analyzed above it is found that only have one action normal for the first radio-frequency module in the first adjustment process, because when the
It just stopped adjustment when one radio-frequency module is working properly for the first time.The once or multiple work of first radio-frequency module in second adjustment process
A possibility that work is normal, bigger has repeatedly working properly.First adjustment process and the second adjustment process respectively have its advantage, such as
First adjustment process time is short, and the second adjustment process can obtain more preferably network parameter etc..Specifically use any adjusting
Process, the embodiment of the present invention are not construed as limiting, as needed using one of adjustment process.
Step S24 detects the network parameter of load capacitance value first radio-frequency module in adjustment process each time, network ginseng
Number includes network registry time and network signal intensity；
Since step S23 has adjusted the load capacitance value of the first radio-frequency module, thus the crystal output of the first radio-frequency module
Frequency also occurs to change accordingly.The embodiment of the present invention detects the adjusting each time in the load capacitance value of the first radio-frequency module
In, network parameter of first radio-frequency module based on the crystal output frequency after adjusting, network parameter include the network registry time and
Network signal intensity.
On the other hand, after the load capacitance value every time to the first radio-frequency module is adjusted, the first radio-frequency module is all tasted
Try registered network, it is possible to succeed in registration, it is also possible to registration failure；Regardless of success or failure, the registration of the first radio-frequency module is obtained
The duration and network signal intensity of network；In other words, if the first radio-frequency module registered network fails, there is no effective registrations
The duration and network signal intensity of network；If the success of the first radio-frequency module registered network, obtains the first radio-frequency module from the beginning of
Registered network is until the network signal after duration consumed by succeeding in registration succeeds in registration as network registry time, and acquisition is strong
Degree.
If above-described embodiment describes, if being adjusted by the first adjustment process, only whether the first radio-frequency module can be detected
Registered network success, because the first adjustment process stops after network registry success.If being adjusted by the second adjustment process, by
In there is the success of multiple network registry, therefore whether registered network success is outer in addition to detecting the first radio-frequency module, it is also necessary to which detection is infused
Network signal intensity after volume network success, so that subsequent further judgement obtains optimal regulation scheme.
Step S25 obtains the corresponding load capacitance value of optimum network parameter in the network parameter of detection；
In the embodiment of the present invention, if being adjusted by the first adjustment process, optimum network parameter is in network parameter
Network parameter when first radio-frequency module is working properly obtains the load capacitance value of corresponding first radio-frequency module at this time i.e.
It can.If being adjusted by the second adjustment process, since there are N-1 group index parameters when the first radio-frequency module is working properly, thus
Load capacitance value corresponding to an optimum network parameter can be selected in N-1 group index parameter.
Specifically, optimum network parameter can be, registion time is most short, the strongest network parameter of network signal intensity.
The load capacitance value of first radio-frequency module is adjusted to the corresponding load capacitance value of optimum network parameter by step S26.
In the embodiment of the present invention, either the first adjustment process or the second adjustment process have been had selected by step S25
The corresponding load capacitance value of one optimum network parameter, then the load capacitance value of the first radio-frequency module is adjusted to walk by step S26
The load capacitance value that rapid S25 is determined, so that the load capacitance that the crystal oscillator device of the first radio-frequency module is determined in step S25
The lower work of value, to eliminate the crystal output frequency error of the first radio-frequency module, with successful registration network and can work normally.
As shown in fig. 7, as a preferred embodiment of the present invention, after step S26, further includes:
The corresponding load capacitance value of optimum network parameter is determined as the mesh that the first radio-frequency module is calibrated by step S27
Mark reference capacitance value.
Specifically, object reference capacitance can be stored in mobile terminal NV.Mobile terminal NV is
Nonvolantile value refers to the radio frequency parameter of storage in the nonvolatile memory, such as the RF_NV_Manager of high pass
Can read NV, can also modify, QXDM can read it is NV more detailed, including RF_NV_Manager read not come out.Generally
In the case of, NV are close compared with communication function, such as the network that intelligent terminal can be marked to allow to register in NV, current to register
Network etc..The data being stored in NV will not disappear because of power-off, and writeable.The information generally stored has: rf's
Related data；imei；Similar macro some definition may also be stored in NV.
In the embodiment of the present invention, the mesh calibrated as the first radio-frequency module of load capacitance value that step S25 is determined
Reference capacitance value is marked, this object reference capacitance is based on, the output frequency that the crystalline substance of the first radio-frequency module mentions oscillator parts passes through
Error is eliminated after adjustment, ensure that the normal work of the first radio-frequency module.
In embodiments of the present invention, load capacitance value is the load electricity of the crystal oscillation system in mobile terminal inside radio-frequency module
Appearance group parameter, need to adjust is the load capacitance value of the radio-frequency module of operation irregularity, i.e. which radio-frequency module operation irregularity, just
Need to adjust the load capacitance value of the corresponding crystal oscillation system of which radio-frequency module.
Typically, load refers to that the electronic component load of the both ends of power of connection in circuit includes capacitive load, resistance
Property load and three kinds of inductive load.Directly two poles should not be connected without load in circuit, this connection is known as short circuit.Often
Load the element for having resistance, engine and light bulb etc. that can consume power.The element of power, such as capacitor are not consumed, can also be connected
It goes, but this situation is open circuit.The meaning of capacitive load refers to the property (charge and discharge, voltage cannot be mutated) with capacitor, i.e., and
Power supply is compared, and when load current leading load one phase difference of voltage, is loaded as capacitive (if load is compensating electric capacity).
Load capacitance refers to the sum of all effective capacitances inside and out two leads connection IC block of crystal oscillator, can
Regard crystal oscillator as and concatenates a capacitor in circuit.
The nominal value of crystal oscillator has the condition of one " load capacitance " in test, meets this at work
Part, frequency of oscillation are just consistent with nominal value.Load capacitance is only to maintain the voltage value of this fixation, does not serve other.No
It is related for needing different voltage and capacitance with crystal oscillator.It loads frequency difference and determines that the frequency of oscillation of oscillator is different.Mark
Claim frequency identical crystal oscillator, load capacitance is not necessarily identical.Because quartz oscillator, there are two resonance frequency, one is string
Connection wipes the low-load capacitor crystal oscillator of vibration crystal oscillator: another wipes the high load capacitor crystal oscillator of vibration crystal oscillator for parallel connection.So nominal frequency
Identical crystal oscillator must also require load capacitance consistent when exchanging, and cannot hastily exchange, it is abnormal otherwise to will cause electrical work.
In general, series resonant crystal has low-load capacitor, and crystal oscillator in parallel has high load capacitor.Feature on circuit
Are as follows: one capacitor of crystal oscillator string is connected across on two feet of IC, then is series resonance-type；A capacitor in crystal oscillator
A foot meet IC, foot ground connection, then be parallel connection type.
The main function of the matching capacitance of crystal oscillator is matching crystal oscillator and oscillating circuit, so that circuit is easy to open vibration and locates
Under reasonable excited state, frequency of oscillation can be finely tuned by adjusting the sizes of the two capacitors.To micro-control unit
(Microcontroller Unit, MCU), the correct matching capacitance for selecting crystal oscillator, it is important to which the excitation state for finely tuning crystal is kept away
Exempt from overdriving or underexcitation, the former, which makes crystal be easy aging, influences service life and oscillating circuit EMC characteristic is caused to deteriorate, then
Person is then not easy to open vibration, works also unstable, so correctly selection crystal match capacitor is critically important.
In the embodiment of the present invention, after load capacitance value is adjusted, the temperature-frequency curve of the crystal based on load capacitance value
Deng can also change therewith, so that the output frequency of crystal is just changed accordingly, to realize because of crystal output frequency
Have error and in the radio-frequency module of operation irregularity crystal output frequency automatic calibration.
A kind of method of crystal frequency calibration of the embodiment of the present invention, by obtaining the radio-frequency module of operation irregularity and working just
Normal radio-frequency module judges the frequency between them after carrying out frequency dividing and phase shift processing respectively to their crystal output frequency
Error, if error is more than pre-determined threshold threshold value, the problem of being accurately positioned the radio-frequency module of operation irregularity reason be its correspondence
The output frequency of crystal oscillator device have an operation irregularity caused by error, and then the step of executing frequency calibration.In frequency
In the step of rate is calibrated, using the crystal output frequency of radio-frequency module working properly as reference frequency, operation irregularity is adjusted
The load capacitance value of the corresponding crystal oscillator device of radio-frequency module；It detects under regulated value each time, works in adjustment process
The network parameter of abnormal radio-frequency module obtains an optimum network parameter, from one or more groups of network parameters with best net
The corresponding load capacitance value of network parameter is arranged in mobile terminal NV as object reference capacitance, to realize crystal
The automatic calibration of frequency, solves the technical issues of crystal breakdown maintenance must return factory in mobile terminal, has reached fast automatic
The optimization of crystal output frequency is carried out, cost is saved and saves time technical effect.
Fig. 8 show another embodiment of the present invention provides mobile terminal circuit theory schematic diagram, for ease of description,
Part related to the embodiment of the present invention is only listed, details are as follows:
As a preferred embodiment of the present invention, mobile terminal provided in an embodiment of the present invention, comprising:
Acquiring unit 201, for obtain operation irregularity in mobile terminal the first radio-frequency module and normal work
Two radio-frequency modules；
Calibration unit 202, for using the crystal output frequency of the second radio-frequency module as reference frequency, to the first radio frequency mould
The output frequency of block is calibrated.
As a preferred embodiment of the present invention, mobile terminal further include:
Judging unit 203, for judging whether the error of crystal output frequency of the first radio-frequency module exceeds pre-determined threshold
Threshold value；
Whether control unit 204, the error for the crystal output frequency in the first radio-frequency module exceed pre-determined threshold threshold
When value, control calibration unit calibrates the output frequency of the first radio-frequency module.
As a preferred embodiment of the present invention, judging unit 203 is specifically used for:
The crystal output frequency of the crystal output frequency of first radio-frequency module and the second radio-frequency module is divided respectively
And phase shift processing, obtain identical first crossover frequency of phase and the second crossover frequency；
The difference of the first crossover frequency Yu the second crossover frequency is calculated, and judges whether difference exceeds pre-determined threshold threshold value.
As a preferred embodiment of the present invention, calibration unit 202 is specifically used for:
The load capacitance value of the first radio-frequency module is adjusted, to change the first crossover frequency, is gradually reduced difference；
The network parameter of load capacitance value first radio-frequency module in adjustment process each time is detected, network parameter includes net
Network registion time and network signal intensity；
Obtain the corresponding load capacitance value of optimum network parameter in the network parameter of detection；
The load capacitance value of first radio-frequency module is adjusted to the corresponding load capacitance value of optimum network parameter.
As a preferred embodiment of the present invention, mobile terminal further include:
Determination unit 205 is carried out for the corresponding load capacitance value of optimum network parameter to be determined as the first radio-frequency module
The object reference capacitance of calibration.
It should be noted that mobile terminal provided in an embodiment of the present invention and the above-mentioned crystal frequency applied to mobile terminal
The embodiment of the method for calibration is corresponding, and working principle and mode are corresponding applicable, just repeats no more here.
In embodiments of the present invention, using the crystal output frequency of radio-frequency module working properly as reference frequency, to work
The output frequency for making abnormal radio-frequency module is calibrated, so that the radio-frequency module of operation irregularity can work normally, is realized
The automatic calibration of crystal frequency.The automatic calibration of crystal frequency has may be implemented in mobile terminal provided in an embodiment of the present invention, solution
It is excellent to have reached fast automatic progress crystal output frequency for the technical issues of certainly crystal breakdown maintenance must return factory in mobile terminal
Change, save cost and save time technical effect.
Preferably, the embodiment of the present invention also provides a kind of mobile terminal, including processor 110, and memory 109 is stored in
On memory 109 and the computer program that can run on the processor 110, the computer program are executed by processor 110
Each process of the embodiment of the method for the above-mentioned crystal frequency calibration of Shi Shixian, and identical technical effect can be reached, to avoid weight
Multiple, which is not described herein again.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each mistake of the embodiment of the method for above-mentioned crystal frequency calibration when being executed by processor
Journey, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer-readable storage medium
Matter, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access
Memory, abbreviation RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (8)
1. a kind of method of crystal frequency calibration, is applied to mobile terminal, which is characterized in that the described method comprises the following steps:
Obtain the first radio-frequency module of operation irregularity in the mobile terminal and the second radio-frequency module of normal work；
Using the crystal output frequency of second radio-frequency module as reference frequency, to the output frequency of first radio-frequency module
It is calibrated；
It is described using the crystal output frequency of second radio-frequency module as the step of reference frequency after and it is described to institute
Before stating the step of the output frequency of the first radio-frequency module is calibrated, further includes:
Judge whether the error of the crystal output frequency of first radio-frequency module exceeds pre-determined threshold threshold value；
If it is, executing the step of output frequency to first radio-frequency module is calibrated；
The step of whether error of the crystal output frequency for judging first radio-frequency module exceeds pre-determined threshold threshold value, packet
It includes:
The crystal output frequency of the crystal output frequency of first radio-frequency module and second radio-frequency module is carried out respectively
Frequency dividing and phase shift processing, obtain identical first crossover frequency of phase and the second crossover frequency；
The difference of first crossover frequency Yu second crossover frequency is calculated, and it is described pre- to judge whether the difference exceeds
If threshold value.
2. the method according to claim 1, wherein the output frequency to first radio-frequency module carries out
The step of calibration, comprising:
The load capacitance value of first radio-frequency module is adjusted, to change first crossover frequency, subtracts the difference gradually
It is small；
The load capacitance value is detected in the network parameter of the first radio-frequency module described in adjustment process each time, the network ginseng
Number includes network registry time and network signal intensity；
Obtain the corresponding load capacitance value of optimum network parameter in the network parameter of the detection；
The load capacitance value of first radio-frequency module is adjusted to the corresponding load capacitance value of the optimum network parameter.
3. according to the method described in claim 2, it is characterized in that, in the load capacitance value by first radio-frequency module
After the step of being adjusted to the optimum network parameter corresponding load capacitance value, further includes:
The corresponding load capacitance value of the optimum network parameter is determined as the target ginseng that first radio-frequency module is calibrated
Examine capacitance.
4. a kind of mobile terminal, which is characterized in that the mobile terminal includes:
Acquiring unit, for obtaining the first radio-frequency module of operation irregularity in the mobile terminal and second penetrating for normal work
Frequency module；
Calibration unit, for using the crystal output frequency of second radio-frequency module as reference frequency, to first radio frequency
The output frequency of module is calibrated；
The mobile terminal further include:
Judging unit, for judging whether the error of crystal output frequency of first radio-frequency module exceeds pre-determined threshold threshold
Value；
Whether control unit, the error for the crystal output frequency in first radio-frequency module exceed pre-determined threshold threshold value
When, it controls the calibration unit and the output frequency of first radio-frequency module is calibrated；
The judging unit is specifically used for:
The crystal output frequency of the crystal output frequency of first radio-frequency module and second radio-frequency module is carried out respectively
Frequency dividing and phase shift processing, obtain identical first crossover frequency of phase and the second crossover frequency；
The difference of first crossover frequency Yu second crossover frequency is calculated, and it is described pre- to judge whether the difference exceeds
If threshold value.
5. mobile terminal according to claim 4, which is characterized in that the calibration unit is specifically used for:
The load capacitance value of first radio-frequency module is adjusted, to change first crossover frequency, subtracts the difference gradually
It is small；
The load capacitance value is detected in the network parameter of the first radio-frequency module described in adjustment process each time, the network ginseng
Number includes network registry time and network signal intensity；
Obtain the corresponding load capacitance value of optimum network parameter in the network parameter of the detection；
The load capacitance value of first radio-frequency module is adjusted to the corresponding load capacitance value of the optimum network parameter.
6. mobile terminal according to claim 5, which is characterized in that the mobile terminal further include:
Determination unit is carried out for the corresponding load capacitance value of the optimum network parameter to be determined as first radio-frequency module
The object reference capacitance of calibration.
7. a kind of mobile terminal, which is characterized in that including processor, memory and be stored on the memory and can be described
The crystal frequency calibration procedure run on processor is realized when the crystal frequency calibration procedure is executed by the processor as weighed
Benefit require any one of 1 to 3 described in crystal frequency calibration method the step of.
8. a kind of computer readable storage medium, which is characterized in that be stored with crystal frequency on the computer readable storage medium
Rate calibration procedure is realized as claimed any one in claims 1 to 3 when the crystal frequency calibration procedure is executed by processor
The step of method of crystal frequency calibration.
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| CN108123716B (en) * | 2017-12-18 | 2021-04-27 | 飞天诚信科技股份有限公司 | Crystal frequency calibration system |
| CN108736984B (en) * | 2018-08-04 | 2023-04-25 | 深圳市瀚索科技开发有限公司 | Frequency offset calibration method and device for radio frequency module |
| CN109040459B (en) * | 2018-08-27 | 2020-11-06 | 维沃移动通信有限公司 | Terminal device control method, terminal device and computer readable storage medium |
| CN109510671B (en) * | 2018-12-29 | 2022-02-18 | 芯讯通无线科技（上海）有限公司 | Setting method and system, and testing method and system of wireless communication module |
| CN115629268B (en) * | 2022-12-19 | 2023-03-28 | 天津伍嘉联创科技发展股份有限公司 | Method and system for testing crystal parameters of tuning fork quartz resonator |
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| CN101826850A (en) * | 2010-03-19 | 2010-09-08 | 北京天碁科技有限公司 | Method for controlling working frequency of quartz crystal and reference clock based on quartz crystal |
| CN103442416A (en) * | 2013-08-23 | 2013-12-11 | 青岛海信移动通信技术股份有限公司 | Data transmission method and device |
| CN106850937A (en) * | 2016-09-09 | 2017-06-13 | 联发科技（新加坡）私人有限公司 | Mobile terminal and overcome crystal aging method for searching network |
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| US20100054377A1 (en) * | 2008-08-28 | 2010-03-04 | Honeywell International Inc. | Systems and methods for spurious signal reduction in multi-mode digital navigation receivers |
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| CN101826850A (en) * | 2010-03-19 | 2010-09-08 | 北京天碁科技有限公司 | Method for controlling working frequency of quartz crystal and reference clock based on quartz crystal |
| CN103442416A (en) * | 2013-08-23 | 2013-12-11 | 青岛海信移动通信技术股份有限公司 | Data transmission method and device |
| CN106850937A (en) * | 2016-09-09 | 2017-06-13 | 联发科技（新加坡）私人有限公司 | Mobile terminal and overcome crystal aging method for searching network |
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