CN109743066B - Terminal sensitivity reduction solution method based on camera master clock adjustment, storage medium and terminal - Google Patents
Terminal sensitivity reduction solution method based on camera master clock adjustment, storage medium and terminal Download PDFInfo
- Publication number
- CN109743066B CN109743066B CN201910149335.2A CN201910149335A CN109743066B CN 109743066 B CN109743066 B CN 109743066B CN 201910149335 A CN201910149335 A CN 201910149335A CN 109743066 B CN109743066 B CN 109743066B
- Authority
- CN
- China
- Prior art keywords
- camera
- frequency
- terminal
- master clock
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a camera master clock adjustment-based terminal sensitivity reduction solution, a storage medium and a terminal. The problem of current mobile intelligent terminal when opening the camera, to the interference of radio frequency antenna and to receiving sensitivity's influence, the default of camera has been reduced is solved.
Description
Technical Field
The invention relates to the technical field of terminal communication, in particular to a method for solving terminal sensitivity reduction based on camera master clock adjustment, a storage medium and a terminal.
Background
With the development of scientific technology and the continuous perfection of mobile networks, the functions of mobile terminals are more and more increased, and the performance is more and more powerful, and nowadays, the most frequently used mobile intelligent terminal with functions is used for taking pictures and carrying out video calls, so that the mobile intelligent terminal increasingly presents the following development trend:
the pixels of the camera are getting higher and higher;
and the number of cameras is more and more.
Further, the sensitivity of the mobile intelligent terminal is increasingly lowered, and even when a camera is turned on, a network drop, a call drop and the like are caused.
The prior art solution generally changes the data transmission frequency of the camera, but the method easily affects the use of the camera, and the anti-interference effect is not ideal.
The prior art has the following disadvantages: changing the data transmission frequency of the camera easily affects the use of the camera and has limited effectiveness.
Disclosure of Invention
In order to overcome the defects, the invention provides a method for solving the problem of terminal sensitivity reduction based on camera master clock adjustment, a storage medium and a terminal. The problem of current mobile intelligent terminal when opening the camera, to the interference of radio frequency antenna and to receiving sensitivity's influence, the default of camera has been reduced is solved.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
a terminal sensitivity reduction solution based on camera master clock adjustment comprises the following steps:
step one, acquiring a base station frequency A1 with the strongest transmission intensity received by a current terminal, and a terminal signal intensity B1 when a camera is not opened corresponding to the base station frequency A1 with the strongest transmission intensity, wherein the base station frequency A1 with the strongest transmission intensity is also the current registered base station frequency;
step two, setting the main clock frequency D of the camera;
step three, judging whether the main clock frequency D of the camera meets the following conditions:
D≥12MHz；
n×D-A1≥D/2；
wherein n is the frequency multiplication factor of the main clock frequency D of the camera closest to the frequency of the current registered base station;
if the conditions are met, entering the step four, and if the conditions are not met, returning to the step two;
step four, saving the main clock frequency D of the camera;
step five, judging whether the camera is started or not, if so, entering a step six, and if not, entering a step eight;
step six, acquiring the terminal signal intensity C1 when the camera is opened corresponding to the current registered base station frequency;
step seven, judging whether m is more than or equal to C1-B1, wherein m is a sensitivity reduction threshold;
if yes, entering step eight;
otherwise, finely adjusting the main clock frequency D of the camera, and returning to the sixth step;
and step eight, storing the master clock frequency D of the camera to obtain the master clock frequency of the camera with stable current sensitivity.
Numerous tests have demonstrated that the camera-induced sense problem is due to harmonics of the Master Clock (MCLK) provided to the camera sensor by the multimedia system. When MCLK frequency-doubled harmonic falls on or near the frequency point of the current base station, the energy noise peak value near a single point is too high, the receiving sensitivity of the current frequency point of the terminal is greatly attenuated, and network drop can occur in serious cases.
Therefore, in the design, the frequency of the main clock of the camera is firstly adjusted to the frequency which is multiplied near the frequency of the current base station, and then the frequency of the main clock is finely adjusted, so that the frequency multiplication harmonic wave is not on the frequency point which affects the sensitivity of the terminal, and the influence of MCLK on sense is avoided. Meanwhile, MCLK is used as an input clock of a system, the range is usually 6-27MHZ, data transmission (MIPI) frequency is required to be in accordance with MIPI CSI protocol specification, the range is usually between 100-400MHZ, the MCLK is autonomously generated by a camera, interference of the MCLK on radio frequency is far larger than influence of the MIPI frequency on the radio frequency, even if different input clocks are used, the generated MIPI frequency can be unchanged, and the MIPI frequency can only raise the bottom noise of a little whole passband. The influence on the signal of a single frequency point is limited, MCLK causes the energy noise peak value near the single frequency point to be too high, so that the sensitivity of a radio frequency system is extremely poor, and the improvement of adjusting MCLK on sense is better than the influence of singly changing MIPI frequency.
Further designing, in the first step, the base station frequency a2 of the second transmission intensity received by the current terminal and the terminal signal intensity B2 corresponding to the base station frequency a2 of the second transmission intensity when the camera is not opened are also obtained at the same time;
step six, simultaneously acquiring the terminal signal intensity C2 corresponding to the base station frequency A2 of the second emission intensity when the camera is opened;
the content of the seventh step is:
judging whether the C1-B1 is less than or equal to m and the C2-B2 is less than or equal to m;
if yes, entering step eight;
otherwise, fine-tuning the master clock frequency D of the camera and returning to the sixth step.
Further, in the first step, the base station frequency A3 of the third transmission intensity received by the current terminal and the terminal signal intensity B3 corresponding to the base station frequency A3 of the third transmission intensity when the camera is not opened are obtained at the same time;
step six, simultaneously acquiring terminal signal intensity C3 corresponding to the base station frequency A3 of the third emission intensity when the camera is opened;
the content of the seventh step is:
judging whether the C1-B1 is less than or equal to m, the C2-B2 is less than or equal to m, and the C3-B3 is less than or equal to m;
if yes, entering step eight;
otherwise, fine-tuning the master clock frequency D of the camera and returning to the sixth step.
And meanwhile, the base station frequencies of the first intensity, the second intensity and the third intensity received by the current terminal are obtained, and the MCLK is correspondingly adjusted to ensure that signals conforming to the three base station frequencies are not influenced, so that the terminal has better adaptability, and the MCLK does not need to be readjusted even if the terminal moves to the vicinity of the base station of the second intensity or the third intensity, thereby saving the adjusting program and the flow time.
Further, the adjusting amplitude of the master clock frequency D of the fine tuning camera in the seventh step is plus or minus 100 KHz. MCLK is usually 6-27MHz, the setting of the second step is coarse adjustment, the amplitude of each setting is about 1MHz, the adjusting range of the fine adjustment is usually within 10% of the coarse adjustment, the amplitude of each adjustment of 100KHz is smaller, and the adjusting precision is better.
Further, the method for setting the master clock frequency D of the camera in the second step is frequency hopping adjustment. The frequency hopping regulation, namely the self-adaptive frequency hopping technology, is a technology combining frequency self-adaptation and power self-adaptation control on the basis of automatic channel quality analysis, can enable the frequency hopping communication process to automatically avoid interfered frequency hopping points, and achieves the purpose of keeping high-quality communication on an interference-free frequency hopping channel for a long time with the minimum transmitting power and the minimum intercepted probability. The frequency self-adaptive control is to refuse to use the frequency points in the frequency hopping set which are used once but have unsuccessful transmission in the frequency hopping communication process, namely to take out the interfered frequency points in the frequency hopping set in real time, so that the frequency hopping communication is carried out on the non-interfered usable frequency points, thereby greatly improving the quality of received signals in the frequency hopping communication.
And further designing an adjusting period t, timing from the first step, judging the timing duration after the eighth step is completed, entering a new step one if the timing duration is greater than or equal to the adjusting period t, and otherwise, continuing to wait until the timing duration reaches the adjusting period t and entering the new step one.
A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the method for terminal desensitization resolution based on camera master clock adjustment as described above.
A terminal, comprising:
at least one camera;
the wireless communication module is used for terminal communication;
a memory storing executable program code;
a processor coupled with the camera, wireless communication module, memory;
the processor calls the executable program code stored in the memory to execute the terminal desensitization solution adjusted based on the camera master clock as described above.
The invention has the beneficial effects that: the best signal intensity of the terminal is guaranteed through fine adjustment of the camera MCLK, the problems that the interference to a radio frequency antenna and the influence on receiving sensitivity are caused when the camera is opened in the current mobile intelligent terminal are solved, and the sense of the camera is reduced.
Drawings
FIG. 1 is a schematic flow diagram of a method;
FIG. 2 is a schematic diagram of a terminal;
FIG. 3 is a schematic diagram of a harmonic of the master clock at the termination signal wave.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
A terminal desensitization solution based on camera master clock adjustment, as shown in fig. 1, includes:
step one, acquiring a base station frequency A1 with the strongest transmission intensity received by a current terminal and a corresponding terminal signal intensity B1 when a camera is not opened, a base station frequency A2 with a second transmission intensity and a corresponding terminal signal intensity B2 when the camera is not opened, a base station frequency A3 with a third transmission intensity and a corresponding terminal signal intensity B3 when the camera is not opened, wherein the base station frequency A1 with the strongest transmission intensity is also the current registered base station frequency;
step two, setting the main clock frequency D of the camera;
step three, judging whether the main clock frequency D of the camera meets the following conditions:
D≥12MHz；
n×D-A1≥D/2；
wherein n is the frequency multiplication factor of the main clock frequency D of the camera closest to the frequency of the current registered base station;
if the conditions are met, entering the step four, and if the conditions are not met, returning to the step two;
step four, saving the main clock frequency D of the camera;
step five, judging whether the camera is started or not, if so, entering a step six, and if not, entering a step eight;
step six, acquiring the camera opening terminal signal intensity C1 corresponding to the current registered base station frequency, the camera opening terminal signal intensity C2 corresponding to the base station frequency A2 with the second emission intensity, and the camera opening terminal signal intensity C3 corresponding to the base station frequency A3 with the third emission intensity;
step seven, judging whether C1-B1 is less than or equal to 3dB, C2-B2 is less than or equal to 3dB, C3-B3 is less than or equal to 3dB, and the sensitivity reduction threshold m is preferably 3 dB;
if yes, entering step eight;
otherwise, finely adjusting the main clock frequency D of the camera, and returning to the sixth step;
and step eight, storing the master clock frequency D of the camera to obtain the master clock frequency of the camera with stable current sensitivity.
And seventhly, fine-tuning the adjusting amplitude of the main clock frequency D of the camera to be plus or minus 100 KHz.
And step two, the method for setting the master clock frequency D of the camera is frequency hopping adjustment.
Setting an adjusting period t, starting timing from the first step, judging timing duration after the eighth step is finished, entering a new round of step one if the timing duration is more than or equal to the adjusting period t, and otherwise, continuing to wait until the timing duration reaches the adjusting period t and entering the new round of step one.
The camera's master clock is set to a range of 6M-27MHZ, usually by default to 24MHZ, and depending on the amount of energy, its harmonics appear at 48MHZ intervals in the middle of the RF band. The position of marker 1 in the example of fig. 3 falls within the band of LTE RX band3(1805-1880 MHZ). The frequency point of the LTE RX band close to the harmonic wave is greatly attenuated and even more than 20 db.
A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the method for terminal desensitization resolution based on camera master clock adjustment as described above.
A terminal, as shown in fig. 2, comprising:
a camera, a wireless communication module, a memory, a processor coupled to the camera, the wireless communication module, the memory, respectively;
the processor calls the executable program code stored in the memory to execute the terminal desensitization solution adjusted based on the camera master clock as described above.
Claims (8)
1. A terminal sensitivity reduction solving method based on camera master clock adjustment is characterized in that the master clock frequency of a camera is adjusted to the frequency multiplication position near the current base station frequency, and then the master clock frequency is finely adjusted to enable the frequency multiplication harmonic not to be on the frequency point influencing the terminal sensitivity, and the method specifically comprises the following steps:
step one, acquiring a base station frequency A1 with the strongest transmission intensity received by a current terminal, and a terminal signal intensity B1 when a camera is not opened corresponding to the base station frequency A1 with the strongest transmission intensity, wherein the base station frequency A1 with the strongest transmission intensity is also the current registered base station frequency;
step two, setting the main clock frequency D of the camera;
step three, judging whether the main clock frequency D of the camera meets the following conditions:
D≥12MHz；
n×D-A1≥D/2；
wherein n is the frequency multiplication factor of the main clock frequency D of the camera closest to the frequency of the current registered base station;
if the conditions are met, entering the step four, and if the conditions are not met, returning to the step two;
step four, saving the main clock frequency D of the camera;
step five, judging whether the camera is started or not, if so, entering a step six, and if not, entering a step eight;
step six, acquiring the terminal signal intensity C1 when the camera is opened corresponding to the current registered base station frequency;
step seven, judging whether m is more than or equal to C1-B1, wherein m is a sensitivity reduction threshold;
if yes, entering step eight;
otherwise, finely adjusting the main clock frequency D of the camera, and returning to the sixth step;
and step eight, storing the master clock frequency D of the camera to obtain the master clock frequency of the camera with stable current sensitivity.
2. The camera master clock adjustment-based terminal desensitization solution of claim 1, wherein: in the first step, the base station frequency A2 of the second transmission intensity received by the current terminal and the terminal signal intensity B2 corresponding to the base station frequency A2 of the second transmission intensity when the camera is not opened are also obtained at the same time;
step six, simultaneously acquiring the terminal signal intensity C2 corresponding to the base station frequency A2 of the second emission intensity when the camera is opened;
the content of the seventh step is:
judging whether the C1-B1 is less than or equal to m and the C2-B2 is less than or equal to m;
if yes, entering step eight;
otherwise, fine-tuning the master clock frequency D of the camera and returning to the sixth step.
3. The camera master clock adjustment-based terminal desensitization solution of claim 2, wherein: in the first step, the base station frequency A3 of the third transmission intensity received by the current terminal and the terminal signal intensity B3 corresponding to the base station frequency A3 of the third transmission intensity when the camera is not opened are also obtained at the same time;
step six, simultaneously acquiring terminal signal intensity C3 corresponding to the base station frequency A3 of the third emission intensity when the camera is opened;
the content of the seventh step is:
judging whether the C1-B1 is less than or equal to m, the C2-B2 is less than or equal to m, and the C3-B3 is less than or equal to m;
if yes, entering step eight;
otherwise, fine-tuning the master clock frequency D of the camera and returning to the sixth step.
4. The camera master clock adjustment-based terminal desensitization solution of claim 1, wherein: and seventhly, fine-tuning the adjusting amplitude of the main clock frequency D of the camera to be plus or minus 100 KHz.
5. The camera master clock adjustment-based terminal desensitization solution of claim 1, wherein: and step two, the method for setting the master clock frequency D of the camera is frequency hopping adjustment.
6. The camera master clock adjustment-based terminal desensitization solution of claim 1, wherein: and if an adjusting period t is further set, timing is started from the first step, timing duration is judged after the eighth step is completed, if the timing duration is greater than or equal to the adjusting period t, the first step of the new round is started, and if not, the first step of the new round is started after the timing duration reaches the adjusting period t.
7. A storage medium characterized by: the storage medium has stored therein a plurality of instructions adapted to be loaded by the processor to perform the steps of the camera master clock based adjustment of terminal desensitization solution of any of claims 1 to 6.
8. A terminal, characterized by comprising:
at least one camera;
the wireless communication module is used for terminal communication;
a memory storing executable program code;
a processor coupled to the camera, wireless communication module, memory, respectively;
the processor calls the executable program code stored in the memory to execute the camera master clock adjustment-based terminal desensitization solution of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149335.2A CN109743066B (en) | 2019-02-28 | 2019-02-28 | Terminal sensitivity reduction solution method based on camera master clock adjustment, storage medium and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149335.2A CN109743066B (en) | 2019-02-28 | 2019-02-28 | Terminal sensitivity reduction solution method based on camera master clock adjustment, storage medium and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109743066A CN109743066A (en) | 2019-05-10 |
| CN109743066B true CN109743066B (en) | 2020-12-15 |
Family
ID=66368685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910149335.2A Active CN109743066B (en) | 2019-02-28 | 2019-02-28 | Terminal sensitivity reduction solution method based on camera master clock adjustment, storage medium and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109743066B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111491072B (en) * | 2020-04-20 | 2022-05-10 | 维沃移动通信有限公司 | Pixel clock frequency adjusting method and device and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368589A (en) * | 2012-04-01 | 2013-10-23 | 展讯通信（上海）有限公司 | Interference inhibition method, interference inhibition device and receiver |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369830B (en) * | 2008-10-17 | 2010-10-27 | 北京创毅视讯科技有限公司 | Method and electronic system for improving reception sensitivity of radio frequency circuit |
| US8483333B2 (en) * | 2010-05-06 | 2013-07-09 | Mediatek Inc. | Methods for adjusting system clock in terms of operational status of non-baseband module, methods for peripheral device control adjustment, and electronic devices using the same |
| CN102386937B (en) * | 2011-10-25 | 2014-03-19 | 青岛海信移动通信技术股份有限公司 | Wireless communication system and method for improving sensitivity of wireless communication system |
| CN103780273B (en) * | 2014-01-26 | 2016-03-02 | 深圳市金立通信设备有限公司 | A kind of method and terminal optimizing antenna receiving sensitivity |
| CN105338559A (en) * | 2014-07-31 | 2016-02-17 | 展讯通信（上海）有限公司 | Clock frequency adjusting system, clock frequency adjusting method and mobile terminal |
| CN104270162B (en) * | 2014-10-09 | 2016-04-20 | 苏州经贸职业技术学院 | Improve GSM receiving system to the method for 26MHz harmonic wave antijamming capability |
-
2019
- 2019-02-28 CN CN201910149335.2A patent/CN109743066B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368589A (en) * | 2012-04-01 | 2013-10-23 | 展讯通信（上海）有限公司 | Interference inhibition method, interference inhibition device and receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109743066A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11096072B2 (en) | Method for improving Wi-Fi performance and terminal | |
| US4317229A (en) | Sectored antenna receiving system | |
| CN102752007B (en) | Mobile terminal for automatically adjusting antenna matching and control method thereof | |
| CN108183725B (en) | Antenna coexistence mutual interference processing method and device, storage medium and electronic equipment | |
| WO2018006590A1 (en) | Antenna tuning parameter processing method and mobile terminal | |
| WO2007096683A1 (en) | Method and device for preventing interference at a radio receiver device caused by several radio transmitter devices | |
| CN101867390A (en) | Anti-interference method and system for mobile communication terminal | |
| AU2014407025B2 (en) | Processing method and apparatus for service signal and customer premise equipment | |
| CN109743066B (en) | Terminal sensitivity reduction solution method based on camera master clock adjustment, storage medium and terminal | |
| CN111865367B (en) | RFID data transmission method and device, electronic equipment and storage medium | |
| CN104469786B (en) | A kind of LTE and WIFI cobasis station Interference Suppression System and method | |
| CN112737716B (en) | Millimeter wave anti-interference method, device, terminal and storage medium | |
| CN108574520B (en) | Method and device for adjusting antenna switching | |
| CN109769267A (en) | A kind of processing method and mobile terminal reducing co-channel interference | |
| CN115412114B (en) | Different system interference processing method and device, electronic equipment and storage medium | |
| CN108768421A (en) | A kind of signal transmitting method and radio-frequency front-end radiating circuit | |
| CN109257081B (en) | Communication control method and device of terminal, storage medium and terminal | |
| CN105451312A (en) | Transmitting power control system and method and mobile communication terminal | |
| WO2018059009A1 (en) | Uplink signal quality compensation method and device | |
| CN114499550A (en) | Signal transmission method and device, electronic equipment and storage medium | |
| US20220321160A1 (en) | Wave limiting circuit, and pre-calibration method, dynamic correction method, and apparatuses therefor | |
| CN113973310A (en) | Method and device for optimizing remote co-channel interference and computer equipment | |
| US20160173166A1 (en) | Wireless communication device, wireless communication method, and recording medium | |
| US7983634B2 (en) | Radio telecommunication terminal and a method of decreasing perturbations within this terminal | |
| CN114157310B (en) | Harmonic filtering method, device, terminal and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 16, cuixing Road, Hui Xing street, Yubei District, Chongqing Patentee after: Chongqing Lanan Technology Co.,Ltd. Address before: No. 16, cuixing Road, Hui Xing street, Yubei District, Chongqing Patentee before: CHONGQING BLUEBANK COMMUNICATION TECHNOLOGY Co.,Ltd. |