CN107453837A - The method of adjustment and device of LCD signal - Google Patents
The method of adjustment and device of LCD signal Download PDFInfo
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- CN107453837A CN107453837A CN201610375634.4A CN201610375634A CN107453837A CN 107453837 A CN107453837 A CN 107453837A CN 201610375634 A CN201610375634 A CN 201610375634A CN 107453837 A CN107453837 A CN 107453837A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
- H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
- H04B15/06—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/20—Countermeasures against jamming
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/10—Jamming or countermeasure used for a particular application
- H04K2203/16—Jamming or countermeasure used for a particular application for telephony
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Telephone Function (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a kind of method of adjustment of LCD signal and device, wherein, this method includes：Obtain the communications band where the current radio frequency network of terminal；First working clock frequency is calculated according to the communications band, wherein any harmonic component of first working clock frequency is respectively positioned on and stated outside communications band；The working clock frequency of the LCDs LCD signal of the terminal is adjusted to first working clock frequency.By the present invention, solve the problems, such as to be unable to interference of the adjust automatically LCD signal to mobile phone radiofrequency signal in correlation technique.
Description
Technical field
The present invention relates to field of signal processing, in particular to the method for adjustment and device of a kind of LCD signal.
Background technology
With the continuous development of the communication technology, the frequency range of various network formats is increasing, GSM/CDMA/WCDMA/
The various networks such as LTE, the network of mobile terminal support, frequency range are also more and more.Mobile phone signal is also more easily interfered, such as
Motor, camera, liquid crystal display (Liquid Crystal Display, referred to as LCD) etc. is likely to disturb radio frequency to connect
Receive performance.
For interfering between LCD and radiofrequency signal, the external interference of LCD clock signals is eliminated, in correlation technique
Scheme be exactly to add common-mode filter, when differential clocks electric current flows through common mode inductance, inductor wire of the electric current in same-phase coiling
In circle, produce reverse magnetic field and cancel out each other, eliminate electromagnetic interference (Electromagnetic Interference, abbreviation
For EMI) noise, inductance also has the effect of filtering to high-frequency harmonic in itself.
But applicant invents, and for different frequency range, sets fixed common-mode filter effective in correlation technique
Avoid interference of the LCD to mobile phone radio frequency.
For above mentioned problem present in correlation technique, at present it is not yet found that the solution of effect.
The content of the invention
The embodiments of the invention provide a kind of method of adjustment of LCD signal and device, at least to solve in correlation technique not
Can interference of the adjust automatically LCD signal to mobile phone radiofrequency signal the problem of.
According to one embodiment of present invention, there is provided a kind of method of adjustment of LCD signal, including：It is current to obtain terminal
Radio frequency network where communications band；First working clock frequency is calculated according to the communications band, wherein first work
Any harmonic component for making clock frequency is respectively positioned on and stated outside communications band；By the LCDs LCD signal of the terminal
Working clock frequency is adjusted to first working clock frequency.
Alternatively, before the communications band where obtaining the current radio frequency network of terminal, in addition to：Judge the terminal
Whether current radio frequency network changes；When judged result is to be, it is determined that where obtaining the current radio frequency network of terminal
Communications band.
Alternatively, when the LCD signal is periodic signal, first working clock frequency is calculated by below equation
f(t)：
Wherein, a0DC component after being decomposed for the LCD signal by Fourier transformation, n are the LCD signal
Harmonic order, n is positive integer, and ω is angular speed, anFor the amplitude of n cosine wave component, bnFor shaking for n component sine waves
Width.
Alternatively, the communications band where obtaining the current radio frequency network of terminal includes：Inquire about belonging to the radio frequency network
Network type；Communications band corresponding with the network type is determined according to default frequency allocation table.
Alternatively, the working clock frequency of the LCDs LCD signal of the terminal is adjusted to first work
Clock frequency includes：By the frequency multiplication of the inside phaselocked loop that adjusts the terminal and frequency division parameter by the frequency of the LCD signal
It is transferred to first working clock frequency.
According to another embodiment of the invention, there is provided a kind of adjusting apparatus of LCD signal, including：Acquisition module, use
Communications band where the current radio frequency network of terminal is obtained；Computing module, for calculating first according to the communications band
Working clock frequency, wherein any harmonic component of first working clock frequency is respectively positioned on and stated outside communications band；Adjustment
Module, for the working clock frequency of the LCDs LCD signal of the terminal to be adjusted into the first work clock frequency
Rate.
Alternatively, described device also includes：Judge module, for obtaining the current radio frequency network of terminal in the acquisition module
Before communications band where network, judge whether the current radio frequency network of the terminal changes；Determining module, for sentencing
Disconnected result is when being, it is determined that obtaining the communications band where the current radio frequency network of terminal.
Alternatively, when the LCD signal is periodic signal, the computing module calculates described first by below equation
Working clock frequency f (t)：
Wherein, a0DC component after being decomposed for the LCD signal by Fourier transformation, n are the LCD signal
Harmonic order, n is positive integer, and ω is angular speed, anFor the amplitude of n cosine wave component, bnFor shaking for n component sine waves
Width.
Alternatively, acquisition module includes：Query unit, for inquiring about the network type belonging to the radio frequency network；It is determined that
Unit, for determining communications band corresponding with the network type according to default frequency allocation table.
Alternatively, adjusting module includes：Adjustment unit, for the inside phaselocked loop by adjusting the terminal frequency multiplication and
The frequency of the LCD signal is transferred to first working clock frequency by frequency division parameter.
According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is arranged to storage and used
In the program code for performing following steps：
Obtain the communications band where the current radio frequency network of terminal；
First working clock frequency is calculated according to the communications band, wherein first working clock frequency is any humorous
Wave component, which is respectively positioned on, to be stated outside communications band；
The working clock frequency of the LCDs LCD signal of the terminal is adjusted to the first work clock frequency
Rate.
Pass through the present invention, the communications band where the radio frequency network current by obtaining terminal, then according to the communication
Frequency range calculates the first working clock frequency, wherein any harmonic component of first working clock frequency, which is respectively positioned on, states communication frequency
Outside section, the working clock frequency of the LCDs LCD signal of the terminal is finally adjusted to first work clock
Frequency, by the communication frequency current according to terminal to LCD clock frequency adjust automaticallies so that the clock harmonic of LCD signal point
Amount falls outside working frequency range, can effectively avoid interference of the LCD to mobile phone signal, it is continually changing can be applicable terminal radio frequency signal
Situation, solve the problems, such as to be unable to interference of the adjust automatically LCD signal to mobile phone radiofrequency signal in correlation technique.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of hardware block diagram of the mobile terminal of the method for adjustment of LCD signal of the embodiment of the present invention；
Fig. 2 is the flow chart of the method for adjustment of LCD signal according to embodiments of the present invention；
Fig. 3 is the structured flowchart of the adjusting apparatus of LCD signal according to embodiments of the present invention；
Fig. 4 is the alternative construction block diagram one of the adjusting apparatus of LCD signal according to embodiments of the present invention；
Fig. 5 is the alternative construction block diagram two of the adjusting apparatus of LCD signal according to embodiments of the present invention；
Fig. 6 is workflow schematic diagram according to embodiments of the present invention；
Fig. 7 is the waveform diagram of fundamental wave according to embodiments of the present invention and harmonic wave.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.
Embodiment 1
The embodiment of the method that the embodiment of the present application one is provided can be in mobile terminal, terminal or similar fortune
Calculate and performed in device.Exemplified by running on mobile terminals, Fig. 1 is a kind of method of adjustment of LCD signal of the embodiment of the present invention
Mobile terminal hardware block diagram.As shown in figure 1, mobile terminal 10, which can include one or more, (only shows one in figure
It is individual) (processor 102 can include but is not limited to Micro-processor MCV or PLD FPGA etc. processing to processor 102
Device), the memory 104 for data storage and the transmitting device 106 for communication function.Ordinary skill people
It is appreciated that the structure shown in Fig. 1 is only to illustrate, it does not cause to limit member to the structure of above-mentioned electronic installation.It is for example, mobile
Terminal 10 may also include more either less components than shown in Fig. 1 or have the configuration different from shown in Fig. 1.
Memory 104 can be used for the software program and module of storage application software, such as the LCD letters in the embodiment of the present invention
Number method of adjustment corresponding to programmed instruction/module, processor 102 is stored in software program in memory 104 by operation
And module, so as to perform various function application and data processing, that is, realize above-mentioned method.Memory 104 may include height
Fast random access memory, may also include nonvolatile memory, as one or more magnetic storage device, flash memory or other
Non-volatile solid state memory.In some instances, memory 104 can further comprise remotely located relative to processor 102
Memory, these remote memories can pass through network connection to mobile terminal 10.The example of above-mentioned network includes but unlimited
In internet, intranet, LAN, mobile radio communication and combinations thereof.
Transmitting device 106 is used to data are received or sent via a network.Above-mentioned network instantiation may include
The wireless network that the communication providerses of mobile terminal 10 provide.In an example, transmitting device 106 includes a Network adaptation
Device (Network Interface Controller, NIC), its can be connected by base station with other network equipments so as to it is mutual
Networking is communicated.In an example, transmitting device 106 can be radio frequency (Radio Frequency, RF) module, and it is used
In wirelessly being communicated with internet.
A kind of method of adjustment for the LCD signal for running on above-mentioned mobile terminal is provided in the present embodiment, and Fig. 2 is basis
The flow chart of the method for adjustment of the LCD signal of the embodiment of the present invention, as shown in Fig. 2 the flow comprises the following steps：
Step S202, obtain the communications band where the current radio frequency network of terminal；
Step S204, the first working clock frequency is calculated according to communications band, wherein the first working clock frequency is any
Harmonic component, which is respectively positioned on, to be stated outside communications band；
Step S206, the working clock frequency of the LCDs LCD signal of terminal is adjusted to the first work clock frequency
Rate.
By above-mentioned steps, the communications band where the radio frequency network current by obtaining terminal, then according to communication frequency
Section calculate the first working clock frequency, wherein any harmonic component of the first working clock frequency be respectively positioned on state communications band it
Outside, the working clock frequency of the LCDs LCD signal of terminal is finally adjusted to the first working clock frequency, passes through foundation
The current communication frequency of terminal is to LCD clock frequency adjust automaticallies so that the clock harmonic component of LCD signal falls in working frequency range
Outside, interference of the LCD to mobile phone signal can be effectively avoided, the continually changing situation of terminal radio frequency signal can be applicable, solve phase
The problem of interference of the adjust automatically LCD signal to mobile phone radiofrequency signal is unable in the technology of pass.
Alternatively, the executive agent of above-mentioned steps can be terminal, radio-frequency unit of such as mobile phone with screen, but be not limited to
This.
Optionally, before the communications band where obtaining the current radio frequency network of terminal, also comprise the following steps：
S11, judges whether the current radio frequency network of terminal changes；
S12, when judged result is to be, it is determined that obtaining the communications band where the current radio frequency network of terminal.
In the present embodiment, when LCD signal is periodic signal, the first working clock frequency f is calculated by below equation
(t)：
Wherein, a0DC component after being decomposed for LCD signal by Fourier transformation, n be LCD signal harmonic order, n
For positive integer, ω is angular speed, anFor the amplitude of n cosine wave component, bnFor the amplitude of n component sine waves.
Alternatively, the communications band where obtaining the current radio frequency network of terminal includes：
S21, inquire about the network types such as the network type belonging to radio frequency network, such as movement, UNICOM, 2G, 3G；
S22, communications band corresponding with network type is determined according to default frequency allocation table.Due to each network type
Network has intrinsic network frequency range, and e.g., CHINAUNICOM WCDMA2100 (B1 frequency ranges) is in China domestic uplink/downlink frequency range
It is 1920-1980/2110-2170M respectively.Frequency allocation table can be set in advance in terminal, carry out direct matched and searched.
Alternatively, the working clock frequency of the LCDs LCD signal of terminal is adjusted to the first working clock frequency
Including：The frequency of LCD signal is transferred to by the first work clock by the frequency multiplication and frequency division parameter for the inside phaselocked loop for adjusting terminal
Frequency.It is by taking high-pass platform as an example herein：LCD work clock MIPI_DSI_CLK is provided by phaselocked loop inside MCU, can be with
Output frequency is adjusted by changing frequency multiplication, frequency division parameter etc..
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot
In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing
The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage
In medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, calculate
Machine, server, or network equipment etc.) method that performs each embodiment of the present invention.
Embodiment 2
Additionally provide a kind of adjusting apparatus of LCD signal in the present embodiment, the device be used to realizing above-described embodiment and
Preferred embodiment, repeating no more for explanation was carried out.As used below, term " module " can realize predetermined work(
The combination of the software and/or hardware of energy.Although device described by following examples is preferably realized with software, firmly
Part, or the realization of the combination of software and hardware is also what may and be contemplated.
Fig. 3 is the structured flowchart of the adjusting apparatus of LCD signal according to embodiments of the present invention, as shown in figure 3, the device bag
Include：
Acquisition module 30, the communications band where the radio frequency network current for obtaining terminal；
Computing module 32, for calculating the first working clock frequency according to communications band, wherein the first working clock frequency
Any harmonic component be respectively positioned on and state outside communications band；
Adjusting module 34, for the working clock frequency of the LCDs LCD signal of terminal to be adjusted into the first work
Clock frequency.
Fig. 4 is the alternative construction block diagram one of the adjusting apparatus of LCD signal according to embodiments of the present invention, as shown in figure 4, should
In addition to including all modules shown in Fig. 3, device also includes device：
Judge module 40, before the communications band where obtaining the current radio frequency network of terminal in acquisition module 30,
Judge whether the current radio frequency network of terminal changes；
Determining module 42, during for being in judged result, it is determined that obtaining the communication where the current radio frequency network of terminal
Frequency range.
Optionally, when LCD signal is periodic signal, computing module calculates the first working clock frequency by below equation
f(t)：
Wherein, a0DC component after being decomposed for LCD signal by Fourier transformation, n be LCD signal harmonic order, n
For positive integer, ω is angular speed, anFor the amplitude of n cosine wave component, bnFor the amplitude of n component sine waves.
Fig. 5 is the alternative construction block diagram two of the adjusting apparatus of LCD signal according to embodiments of the present invention, as shown in figure 5, should
In addition to including all modules shown in Fig. 3, acquisition module 30 includes device：
Query unit 50, for inquiring about the network type belonging to radio frequency network；
Determining unit 52, for determining communications band corresponding with network type according to default frequency allocation table.
Optionally, adjusting module includes：Adjustment unit, frequency multiplication and frequency dividing for the inside phaselocked loop by adjusting terminal
The frequency of LCD signal is transferred to the first working clock frequency by parameter.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or above-mentioned modules are with any
The form of combination is located in different processors respectively.
Embodiment 3
The present embodiment is the alternative embodiment of the present invention, for the present invention is described in detail：
The working frequency of LCD of mobile phone is not changeless, but adjustable in the range of certain frequency.The present invention's
Core content is：For the network frequency range residing for the mobile terminals such as mobile phone, different frequency LCD clocks, this clock can be used
And its frequency of any order harmonic component for including, do not avoid LCD effectively thus in mobile phone work at present frequency range
Interference of the clock to radio frequency.
When the working frequency range of mobile phone changes, CPU can also automatically be checked and be adjusted LCD work clock, during LCD
The harmonic component of clock is all the time outside operating handset frequency range.
Present invention mainly solves LCD clock frequencies to disturb RF index problem, and Fig. 6 is work according to embodiments of the present invention
Schematic flow sheet, including：
Step S601：The network being currently located is inquired about, obtains the communications band of current network；
Step S602：Software calculates a LCD working clock frequency so that any harmonic component of the clock all falls
Outside communications band；
Step S603：LCD clock frequencies are adjusted to optimal.
Step S601 be enquiry mobile terminal where network, can software inquiry record or daily record LOG by way of,
Obtain current network information.Table 1 is the frequency allocation table of the present embodiment, and each working frequency range of terminal communication is listed in table 1, than
It is CHINAUNICOM WCDMA2100 (B1 frequency ranges) to find current network such as software, and uplink/downlink frequency range is 1920-1980/ respectively
2110-2170M, (the actually domestic frequency range for distributing to UNICOM is 1940-1955/2130-2145M), when optimizing LCD work
Zhong Shi, it should be ensured that the frequency of harmonic component falls outside the frequency range.
Step S602 is the clock frequency for optimizing LCD, and processor is according to Harmonic Theory, when calculating optimal work automatically
Clock.Periodic signal can be decomposed into DC component a by Fourier transformation0With the linear superposition of the sinusoidal signal of different frequency：
N=1, referred to as first harmonic (fundamental wave), n=2,3,4 ... are referred to as higher hamonic wave, and Fig. 7 is according to embodiments of the present invention
Fundamental wave and harmonic wave waveform diagram, such as Fig. 7, the frequency of harmonic wave：The π of f=ω/2.The frequency of higher hamonic wave is the integer of fundamental wave
Times, for example fundamental frequency is 50MHz, second harmonic frequency is 100MHz, and third harmonic frequencies are 150MHz, by that analogy.Base
The frequency of ripple can be set by software, can thus calculate the frequency of harmonic component, avoid the current work frequency of mobile phone
Section.
Step S603 resets LCD clock frequencies, by taking high-pass platform as an example：LCD work clock MIPI_DSI_CLK
It is to be provided by phaselocked loop inside MCU, output frequency can be adjusted by changing frequency multiplication, frequency division parameter etc..Institute is calculated in S602
During the clock frequency needed, the configuration parameter of correlation is preferably calculated.
The present embodiment is real-time detection operating handset frequency range, and Automatic Optimal adjusts LCD clock frequencies, in mobile phone handover network
Afterwards, for example the 4G from 3G switchings, LCD clock frequencies can also be readjusted.
Optionally, step S602 calculates required clock frequency by algorithm, if money can be wasted by being calculated in real time with CPU
Source, and algorithm is complicated.Mobile terminal is when networking, the network that all can clearly be supported, can according to the frequency range of real work,
LCD clocks corresponding to each frequency range, and phase-locked-loop configuration parameter are first calculated, is put in memory.Mobile phone at work can be straight
Connect and table look-up to adjust LCD working frequencies, calculated again so there is no need to system, reduce power consumption.
Whether the clock frequency calculated is suitable, can also be verified by frequency spectrograph, see the high frequency harmonic components of clock
Whether fall outside working frequency range.
The use of single LCD clock frequencies is difficult to avoid producing interference to signal with being continuously increased for mobile phone frequency range.This
Embodiment passes through LCD clock frequency adjust automaticallies so that clock harmonic component falls on the basis of traditional elimination EMI interference
Outside working frequency range, interference of the LCD to mobile phone signal can be effectively avoided, the method for the present embodiment is all useful to all frequency ranges.
Embodiment 4
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can
The program code for performing following steps to be arranged to storage to be used for：
S1, obtain the communications band where the current radio frequency network of terminal；
S2, the first working clock frequency is calculated according to communications band, wherein any harmonic wave of the first working clock frequency point
Amount, which is respectively positioned on, to be stated outside communications band；
S3, the working clock frequency of the LCDs LCD signal of terminal is adjusted to the first working clock frequency.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or
CD etc. is various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs according to the program code stored in storage medium and obtains terminal
Communications band where current radio frequency network；
Alternatively, in the present embodiment, processor is performed according to communication according to the program code stored in storage medium
Frequency range calculate the first working clock frequency, wherein any harmonic component of the first working clock frequency be respectively positioned on state communications band it
Outside；
Alternatively, in the present embodiment, processor is performed terminal according to the program code stored in storage medium
The working clock frequency of LCDs LCD signal is adjusted to the first working clock frequency.
Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment
Example, the present embodiment will not be repeated here.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. method of adjustment of LCD signal, it is characterised in that including：Obtain the communications band where the current radio frequency network of terminal；First working clock frequency is calculated according to the communications band, wherein any harmonic wave of first working clock frequency point Amount, which is respectively positioned on, to be stated outside communications band；The working clock frequency of the LCDs LCD signal of the terminal is adjusted to first working clock frequency.
- 2. according to the method for claim 1, it is characterised in that the communication frequency where the current radio frequency network of terminal is obtained Before section, in addition to：Judge whether the current radio frequency network of the terminal changes；When judged result is to be, it is determined that obtaining the communications band where the current radio frequency network of terminal.
- 3. according to the method for claim 1, it is characterised in that when the LCD signal is periodic signal, pass through following public affairs Formula calculates the first working clock frequency f (t)：<mrow> <mi>f</mi> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>&alpha;</mi> <mn>0</mn> </msub> <mo>+</mo> <munderover> <mo>&Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>&infin;</mi> </munderover> <mrow> <mo>(</mo> <msub> <mi>a</mi> <mi>n</mi> </msub> <mi>c</mi> <mi>o</mi> <mi>s</mi> <mo>(</mo> <mrow> <mi>n</mi> <mi>&omega;</mi> <mi>t</mi> </mrow> <mo>)</mo> <mo>+</mo> <msub> <mi>b</mi> <mi>n</mi> </msub> <mi>s</mi> <mi>i</mi> <mi>n</mi> <mo>(</mo> <mrow> <mi>n</mi> <mi>&omega;</mi> <mi>t</mi> </mrow> <mo>)</mo> <mo>)</mo> </mrow> </mrow>Wherein, a0DC component after being decomposed for the LCD signal by Fourier transformation, n are the humorous of the LCD signal Ripple exponent number, n are positive integer, and ω is angular speed, anFor the amplitude of n cosine wave component, bnFor the amplitude of n component sine waves.
- 4. according to the method for claim 1, it is characterised in that obtain the communications band where the current radio frequency network of terminal Including：Inquire about the network type belonging to the radio frequency network；Communications band corresponding with the network type is determined according to default frequency allocation table.
- 5. according to the method for claim 1, it is characterised in that by the work of the LCDs LCD signal of the terminal Clock frequency, which is adjusted to first working clock frequency, to be included：The frequency of the LCD signal is transferred to described by the frequency multiplication and frequency division parameter for the inside phaselocked loop for adjusting the terminal One working clock frequency.
- A kind of 6. adjusting apparatus of LCD signal, it is characterised in that including：Acquisition module, the communications band where the radio frequency network current for obtaining terminal；Computing module, for calculating the first working clock frequency according to the communications band, wherein first work clock frequency Any harmonic component of rate, which is respectively positioned on, to be stated outside communications band；Adjusting module, for the working clock frequency of the LCDs LCD signal of the terminal to be adjusted into first work Make clock frequency.
- 7. device according to claim 6, it is characterised in that described device also includes：Judge module, before the communications band where obtaining the current radio frequency network of terminal in the acquisition module, judge Whether the current radio frequency network of the terminal changes；Determining module, during for being in judged result, it is determined that obtaining the communications band where the current radio frequency network of terminal.
- 8. device according to claim 6, it is characterised in that when the LCD signal is periodic signal, the calculating mould Block calculates the first working clock frequency f (t) by below equation：<mrow> <mi>f</mi> <mrow> <mo>(</mo> <mi>t</mi> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>&alpha;</mi> <mn>0</mn> </msub> <mo>+</mo> <munderover> <mo>&Sigma;</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>&infin;</mi> </munderover> <mrow> <mo>(</mo> <msub> <mi>a</mi> <mi>n</mi> </msub> <mi>c</mi> <mi>o</mi> <mi>s</mi> <mo>(</mo> <mrow> <mi>n</mi> <mi>&omega;</mi> <mi>t</mi> </mrow> <mo>)</mo> <mo>+</mo> <msub> <mi>b</mi> <mi>n</mi> </msub> <mi>s</mi> <mi>i</mi> <mi>n</mi> <mo>(</mo> <mrow> <mi>n</mi> <mi>&omega;</mi> <mi>t</mi> </mrow> <mo>)</mo> <mo>)</mo> </mrow> </mrow> 1Wherein, a0DC component after being decomposed for the LCD signal by Fourier transformation, n are the humorous of the LCD signal Ripple exponent number, n are positive integer, and ω is angular speed, anFor the amplitude of n cosine wave component, bnFor the amplitude of n component sine waves.
- 9. device according to claim 6, it is characterised in that acquisition module includes：Query unit, for inquiring about the network type belonging to the radio frequency network；Determining unit, for determining communications band corresponding with the network type according to default frequency allocation table.
- 10. device according to claim 6, it is characterised in that adjusting module includes：Adjustment unit, the frequency multiplication and frequency division parameter for the inside phaselocked loop by adjusting the terminal are by the LCD signal Frequency is transferred to first working clock frequency.
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| CN201610375634.4A CN107453837A (en) | 2016-05-30 | 2016-05-30 | The method of adjustment and device of LCD signal |
| PCT/CN2016/092748 WO2017206310A1 (en) | 2016-05-30 | 2016-08-01 | Method and device for adjusting lcd signal |
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