CN104994204A - Method and system for lowering interference of terminal display screen - Google Patents
Method and system for lowering interference of terminal display screen Download PDFInfo
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- CN104994204A CN104994204A CN201510439350.2A CN201510439350A CN104994204A CN 104994204 A CN104994204 A CN 104994204A CN 201510439350 A CN201510439350 A CN 201510439350A CN 104994204 A CN104994204 A CN 104994204A
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Abstract
The invention discloses a method and a system for lowering interference of a terminal display screen. The method comprises the steps of firstly, determining a mobile industry processor interface (MIPI) interference interval of the display screen according to read MIPI frequency of the display screen and MIPI line quantity used by the display screen and stored in a terminal; then, determining an interference frequency point of the display screen according to the MIPI interference interval of the display screen and a frequency domain used by the terminal; and configuring a notching filter for a channel corresponding to the interference frequency point of the display screen in a modulator-demodulator. Through adoption of the method, the interference is prevented at the beginning, a radio frequency signal is prevented from interference of the display screen, the complete machine receiving performance of the terminal is improved, and the method is suitable for practical application.
Description
Technical field
The present invention relates to terminal display screen technical field, particularly relate to a kind of method and system reducing terminal display screen interference.
Background technology
The design of the mobile communication terminals such as present smart mobile phone becomes increasingly complex, each functional module gets more and more (as display screen, camera, transducer, button etc.), the interference of each module to cellular communications network also gets more and more, and display screen is exactly wherein the most obvious one of interference source.The method of the interference of current processes and displays screen radio frequency first carries out coupling sensitivity test, cause after coupling sensitivity is deteriorated having found that some channel is interfered, then investigate interference source, determining interference source is after display screen, again display screen is processed, solve interference problem.Prior art goes for reason from result, and reattempt various Improving Measurements, radiofrequency signal is interfered, and complex disposal process, the waste plenty of time.
Summary of the invention
Based on above-mentioned situation, the present invention proposes a kind of method and system reducing terminal display screen interference, evade interference from source, reduce the interference of display screen radio frequency, simple, convenient, meet actual needs.
To achieve these goals, the embodiment of technical solution of the present invention is:
Reduce a method for terminal display screen interference, comprise the following steps:
Determine that the MIPI of described display screen disturbs interval according to the MIPI circuit number that MIPI (Mobile Industry Processor Interface, the mobile Industry Processor Interface) frequency of the display screen read and the described display screen of terminal storage use;
The frequency range disturbing interval and described terminal to use according to the MIPI of described display screen determines the interference frequency of described display screen;
Channel configuration notch filter corresponding to the interference frequency of described display screen in modulator-demodulator.
Reduce a system for terminal display screen interference, comprising:
Interference interval determination module, the MIPI circuit number for using according to the MIPI frequency of the display screen read and the described display screen of terminal storage determines that the MIPI of described display screen disturbs interval;
Interference frequency determination module, the frequency range for disturbing interval and described terminal to use according to the MIPI of described display screen determines the interference frequency of described display screen;
Interference processing module, for channel configuration notch filter corresponding to the interference frequency of described display screen in modulator-demodulator.
Compared with prior art, beneficial effect of the present invention is: the present invention reduces the method and system of terminal display screen interference, first interval is disturbed according to the MIPI of the MIPI frequency of display screen read and the display screen MIPI circuit number determination display screen of storage, the interference frequency of the frequency range determination display screen then used according to terminal, finally corresponding to the interference frequency of display screen channel configuration notch filter, interference is evaded from source, radiofrequency signal is avoided to be subject to the interference of display screen, improve the complete machine receptivity of terminal, processing procedure is simple, save the plenty of time, be applicable to practical application.
Accompanying drawing explanation
Fig. 1 is the method flow diagram reducing terminal display screen interference in an embodiment;
Fig. 2 for based on reduce in the concrete example of method one shown in Fig. 1 terminal display screen interference method flow diagram;
Fig. 3 is the system configuration schematic diagram reducing terminal display screen interference in an embodiment.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that embodiment described herein only in order to explain the present invention, do not limit protection scope of the present invention.
Reduce the method for terminal display screen interference in an embodiment, as shown in Figure 1, comprise the following steps:
Step S101: determine that the MIPI of described display screen disturbs interval according to the MIPI circuit number that the MIPI frequency of the display screen read and the described display screen of terminal storage use;
Step S102: the frequency range disturbing interval and described terminal to use according to the MIPI of described display screen determines the interference frequency of described display screen;
Step S103: channel configuration notch filter corresponding to the interference frequency of described display screen in modulator-demodulator.
Known from the above description, the present invention reduces the method for terminal display screen interference, evades interference from source, reduces the interference of display screen radio frequency, saves the workload of experiment investigation, checking.
In addition, in a concrete example, the MIPI interference of described display screen is spaced apart 1/4 frequency division or 1/12 frequency division of the MIPI frequency of described display screen.
RGB (Red, Green, Blue, red, green, blue) signal parallel transmission on MIPI circuit, when MIPI circuit number is 2 groups, once repeating appears in same color component (R or G or B) every 3 clock cycle; When MIPI circuit number is 3 groups, once repeating appears in same color component (R or G or B) every 1 clock cycle; When MIPI circuit number is 4 groups, once repeating appears in same color component (R or G or B) every 3 clock cycle, by that analogy.2 color component data can be transmitted in each clock cycle, each color component data comprises 8 bytes, so when color component data every 3 clock cycle repeat one time, MIPI disturbs interval=MIPI frequency * 2/ (8*3)=MIPI frequency/12; When color component data every 1 clock cycle repeats one time, MIPI disturbs interval=MIPI frequency * 2/ (8*1)=MIPI frequency/4.So when MIPI circuit is 2 groups, MIPI interference interval is 1/12 frequency division of MIPI frequency; When MIPI circuit is 3 groups, MIPI interference interval is 1/4 frequency division of MIPI frequency; When MIPI circuit is 4 groups, MIPI interference interval is 1/12 frequency division of MIPI frequency, by that analogy.
In addition, in a concrete example, determine that the step of the interference frequency of described display screen comprises:
The frequency range that all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of described display screen or 1/12 frequency division use with described terminal is respectively compared;
Obtain 1/4 frequency division of MIPI frequency or the frequency multiplication frequency of 1/12 frequency division of the described display screen in the frequency range that described terminal uses, the frequency multiplication frequency obtained is the interference frequency of described display screen.
Such as mobile communication terminal uses GSM900 frequency range to carry out communication, its useful receive frequency range is 925.2MHz ~ 959.8MHz, all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of display screen or 1/12 frequency division and above-mentioned receive frequency range 925.2MHz ~ 959.8MHz are compared, if 3 frequency multiplication frequencies of 1 frequency multiplication frequency of 1/4 frequency division of the MIPI frequency of display screen or 1/12 frequency division are within the scope of 925.2MHz ~ 959.8MHz, then 1 frequency multiplication frequency of 1/4 frequency division of the MIPI frequency of display screen or 3 frequency multiplication frequencies of 1/12 frequency division are the interference frequency of display screen.
In addition, in a concrete example, before determining that the MIPI of described display screen disturbs interval, also step is comprised:
Read the MIPI frequency of described display screen, facilitate subsequent treatment normally to carry out, be applicable to application.
In order to understand this method better, below elaborate the method application example that a present invention reduces terminal display screen interference, the MIPI circuit number that in this embodiment, display screen uses is 3 groups.
As shown in Figure 2, this application example can comprise the following steps:
Step S201: the MIPI frequency of reading displayed screen;
Step S202: determine that the MIPI of this display screen disturbs interval according to the MIPI circuit number that the MIPI frequency of the display screen read and this display screen of terminal storage use, MIPI circuit number is 3 groups, and MIPI interference interval is 1/4 frequency division of the MIPI frequency of the display screen read;
Step S203: the frequency range that all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of above-mentioned display screen use with terminal is respectively compared;
Step S204: the frequency multiplication frequency obtaining 1/4 frequency division of the MIPI frequency of the display screen in the frequency range that terminal uses, the frequency multiplication frequency obtained is the interference frequency of display screen;
Step S205: calculate the channel that the interference frequency of above-mentioned display screen is corresponding;
Step S206: channel configuration notch filter corresponding to the interference frequency of above-mentioned display screen in modulator-demodulator.
Rgb signal parallel transmission on MIPI circuit, when MIPI circuit number is 2 groups, once repeating appears in same color component (R or G or B) every 3 clock cycle; When MIPI circuit number is 3 groups, once repeating appears in same color component (R or G or B) every 1 clock cycle; When MIPI circuit number is 4 groups, once repeating appears in same color component (R or G or B) every 3 clock cycle, by that analogy.2 color component data can be transmitted in each clock cycle, each color component data comprises 8 bytes, so when color component data every 3 clock cycle repeat one time, MIPI disturbs interval=MIPI frequency * 2/ (8*3)=MIPI frequency/12; When color component data every 1 clock cycle repeats one time, MIPI disturbs interval=MIPI frequency * 2/ (8*1)=MIPI frequency/4.So when MIPI circuit is 2 groups, MIPI interference interval is 1/12 frequency division of MIPI frequency; When MIPI circuit is 3 groups, MIPI interference interval is 1/4 frequency division of MIPI frequency; When MIPI circuit is 4 groups, MIPI interference interval is 1/12 frequency division of MIPI frequency, by that analogy.
If mobile communication terminal uses GSM900 frequency range to carry out communication, its useful receive frequency range is 925.2MHz ~ 959.8MHz, all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of display screen and above-mentioned receive frequency range 925.2MHz ~ 959.8MHz are compared, if 1 frequency multiplication frequency of 1/4 frequency division of the MIPI frequency of display screen is within the scope of 925.2MHz ~ 959.8MHz, then 1 frequency multiplication frequency of 1/4 frequency division of the MIPI frequency of display screen is the interference frequency of display screen.
This application example disturbs interval according to the MIPI of the MIPI frequency of display screen and MIPI circuit number determination display screen, the interference frequency of the frequency range determination display screen used according to terminal again, the channel configuration notch filter corresponding to the interference frequency of display screen, interference is evaded from source, improve the complete machine receptivity of terminal, be applicable to practical application.
Reduce the system of terminal display screen interference in an embodiment, as shown in Figure 3, comprising:
Interference interval determination module 301, the MIPI circuit number for using according to the MIPI frequency of the display screen read and the described display screen of terminal storage determines that the MIPI of described display screen disturbs interval;
Interference frequency determination module 302, the frequency range for disturbing interval and described terminal to use according to the MIPI of described display screen determines the interference frequency of described display screen;
Interference processing module 303, for channel configuration notch filter corresponding to the interference frequency of described display screen in modulator-demodulator.
In addition, in a concrete example, the MIPI interference of described display screen is spaced apart 1/4 frequency division or 1/12 frequency division of the MIPI frequency of described display screen.
Rgb signal parallel transmission on MIPI circuit, when MIPI circuit number is 2 groups, once repeating appears in same color component (R or G or B) every 3 clock cycle; When MIPI circuit number is 3 groups, once repeating appears in same color component (R or G or B) every 1 clock cycle; When MIPI circuit number is 4 groups, once repeating appears in same color component (R or G or B) every 3 clock cycle, by that analogy.2 color component data can be transmitted in each clock cycle, each color component data comprises 8 bytes, so when color component data every 3 clock cycle repeat one time, MIPI disturbs interval=MIPI frequency * 2/ (8*3)=MIPI frequency/12; When color component data every 1 clock cycle repeats one time, MIPI disturbs interval=MIPI frequency * 2/ (8*1)=MIPI frequency/4.So when MIPI circuit is 2 groups, MIPI interference interval is 1/12 frequency division of MIPI frequency; When MIPI circuit is 3 groups, MIPI interference interval is 1/4 frequency division of MIPI frequency; When MIPI circuit is 4 groups, MIPI interference interval is 1/12 frequency division of MIPI frequency, by that analogy.
As shown in Figure 3, in a concrete example, described interference frequency determination module 302 comprises:
Comparing unit 3021, the frequency range used with described terminal respectively for 1/4 frequency division of the MIPI frequency by described display screen or all frequency multiplication frequencies of 1/12 frequency division compares;
Determining unit 3022, for obtaining 1/4 frequency division of MIPI frequency or the frequency multiplication frequency of 1/12 frequency division of the described display screen in the frequency range that uses in described terminal, the frequency multiplication frequency obtained is the interference frequency of described display screen.
Such as mobile communication terminal uses GSM900 frequency range to carry out communication, its useful receive frequency range is 925.2MHz ~ 959.8MHz, all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of display screen or 1/12 frequency division and above-mentioned receive frequency range 925.2MHz ~ 959.8MHz are compared, if 3 frequency multiplication frequencies of 1 frequency multiplication frequency of 1/4 frequency division of the MIPI frequency of display screen or 1/12 frequency division are within the scope of 925.2MHz ~ 959.8MHz, then 1 frequency multiplication frequency of 1/4 frequency division of the MIPI frequency of display screen or 3 frequency multiplication frequencies of 1/12 frequency division are the interference frequency of display screen.
As shown in Figure 3, in a concrete example, the system in above-described embodiment also comprises frequency read module 304, for reading the MIPI frequency of described display screen;
The MIPI circuit number that the MIPI frequency of the display screen that interference interval determination module 301 reads according to described frequency read module 304 and the described display screen of terminal storage use determines that the MIPI of described display screen disturbs interval.。
Based on the system of the present embodiment shown in Fig. 3, a concrete course of work can be as described below:
First the MIPI frequency of frequency read module 304 reading displayed screen; The MIPI of the MIPI circuit number determination display screen that the MIPI frequency of display screen then disturbing interval determination module 301 to read according to frequency read module 304 and the display screen of terminal storage use disturbs interval, and the MIPI interference of display screen is spaced apart 1/4 frequency division or 1/12 frequency division of the MIPI frequency of display screen; The frequency range that all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of display screen or 1/12 frequency division use with terminal respectively compares by the comparing unit 3021 in interference frequency determination module 302; Determining unit 3022 obtains 1/4 frequency division of the MIPI frequency of the display screen in the frequency range that terminal uses or the frequency multiplication frequency of 1/12 frequency division, and the frequency multiplication frequency obtained is the interference frequency of display screen; Finally disturb the channel configuration notch filter that processing module 303 is corresponding to the interference frequency of display screen in modulator-demodulator.
Known from the above description, the present invention reduces the system of terminal display screen interference, evades interference, avoid radiofrequency signal to be subject to the interference of display screen from source, simple, convenient, meets actual needs.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (8)
1. reduce a method for terminal display screen interference, it is characterized in that, comprise the following steps:
Determine that the MIPI of described display screen disturbs interval according to the MIPI circuit number that the MIPI frequency of the display screen read and the described display screen of terminal storage use;
The frequency range disturbing interval and described terminal to use according to the MIPI of described display screen determines the interference frequency of described display screen;
Channel configuration notch filter corresponding to the interference frequency of described display screen in modulator-demodulator.
2. the method for reduction terminal display screen interference according to claim 1, is characterized in that, the MIPI interference of described display screen is spaced apart 1/4 frequency division or 1/12 frequency division of the MIPI frequency of described display screen.
3. the method for reduction terminal display screen interference according to claim 2, is characterized in that, determine that the step of the interference frequency of described display screen comprises:
The frequency range that all frequency multiplication frequencies of 1/4 frequency division of the MIPI frequency of described display screen or 1/12 frequency division use with described terminal is respectively compared;
Obtain 1/4 frequency division of MIPI frequency or the frequency multiplication frequency of 1/12 frequency division of the described display screen in the frequency range that described terminal uses, the frequency multiplication frequency obtained is the interference frequency of described display screen.
4. the method for reduction terminal display screen interference according to claim 1, is characterized in that, before determining that the MIPI of described display screen disturbs interval, also comprises step:
Read the MIPI frequency of described display screen.
5. reduce a system for terminal display screen interference, it is characterized in that, comprising:
Interference interval determination module, the MIPI circuit number for using according to the MIPI frequency of the display screen read and the described display screen of terminal storage determines that the MIPI of described display screen disturbs interval;
Interference frequency determination module, the frequency range for disturbing interval and described terminal to use according to the MIPI of described display screen determines the interference frequency of described display screen;
Interference processing module, for channel configuration notch filter corresponding to the interference frequency of described display screen in modulator-demodulator.
6. the system of reduction terminal display screen interference according to claim 5, is characterized in that, the MIPI interference of described display screen is spaced apart 1/4 frequency division or 1/12 frequency division of the MIPI frequency of described display screen.
7. the system of reduction terminal display screen interference according to claim 6, it is characterized in that, described interference frequency determination module comprises:
Comparing unit, the frequency range used with described terminal respectively for 1/4 frequency division of the MIPI frequency by described display screen or all frequency multiplication frequencies of 1/12 frequency division compares;
Determining unit, for obtaining 1/4 frequency division of MIPI frequency or the frequency multiplication frequency of 1/12 frequency division of the described display screen in the frequency range that uses in described terminal, the frequency multiplication frequency obtained is the interference frequency of described display screen.
8. the system of reduction terminal display screen interference according to claim 5, is characterized in that, also comprise frequency read module, for reading the MIPI frequency of described display screen;
The MIPI circuit number that the MIPI frequency of the display screen that interference interval determination module reads according to described frequency read module and the described display screen of terminal storage use determines that the MIPI of described display screen disturbs interval.
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| CN105871478A (en) * | 2015-12-11 | 2016-08-17 | 乐视移动智能信息技术（北京）有限公司 | Method and device for resisting high order harmonic interferences of display screen MIPI (Mobile Industry Processor Interface) bus, and mobile terminal |
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| CN107635279A (en) * | 2017-08-22 | 2018-01-26 | 上海斐讯数据通信技术有限公司 | A kind of method and system of reduction MIPI screens interference |
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| CN109743444A (en) * | 2018-12-19 | 2019-05-10 | 努比亚技术有限公司 | A kind of display control method, mobile terminal and computer readable storage medium |
| WO2020151511A1 (en) * | 2019-01-25 | 2020-07-30 | 维沃移动通信有限公司 | Signal processing system and terminal device |
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| CN110719119A (en) * | 2019-10-11 | 2020-01-21 | 维沃移动通信有限公司 | Anti-interference method and device |
| CN110719119B (en) * | 2019-10-11 | 2021-06-18 | 维沃移动通信有限公司 | Anti-interference method and device |
| CN111431632A (en) * | 2020-03-26 | 2020-07-17 | 维沃移动通信有限公司 | Signal transmission method and electronic equipment |
| CN111431632B (en) * | 2020-03-26 | 2021-11-09 | 维沃移动通信有限公司 | Signal transmission method and electronic equipment |
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