CN109743066A - Solution, storage medium and terminal are reduced based on the terminal flexibility that camera master clock is adjusted - Google Patents
Solution, storage medium and terminal are reduced based on the terminal flexibility that camera master clock is adjusted Download PDFInfo
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- CN109743066A CN109743066A CN201910149335.2A CN201910149335A CN109743066A CN 109743066 A CN109743066 A CN 109743066A CN 201910149335 A CN201910149335 A CN 201910149335A CN 109743066 A CN109743066 A CN 109743066A
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Abstract
The present invention discloses a kind of terminal flexibility reduction solution, storage medium and terminal adjusted based on camera master clock, by the frequency point and signal strength that record current base station, the frequency of adjustment camera master clock is calculated, and by fine tuning, to guarantee best signal strength.Current mobile intelligent terminal is solved when opening camera, the interference to radio-frequency antenna and the influence to receiving sensitivity reduce the desense of camera.
Description
Technical field
The present invention relates to terminal fields of communication technology, specifically, are related to a kind of terminal adjusted based on camera master clock
Sensitivity decrease solution, storage medium and terminal.
Background technique
It is constantly improve with the development of science and technology with mobile network, the function of mobile terminal is more and more, performance is got over
Come more powerful, and the most common function mobile intelligent terminal of user is taken pictures and video calling now, gets over mobile intelligent terminal
More to show following development trend:
The pixel of camera is higher and higher；
The number of camera is more and more simultaneously.
And then cause the desense (sensitivity decrease) to mobile intelligent terminal increasingly severe, or even opening camera
When can cause to fall net, call drop etc..
And the solution of the prior art is usually the data transmission frequencies for changing camera, but which is easy to influence camera
Use, and anti-jamming effectiveness is unsatisfactory.
The shortcomings that prior art: the data transmission frequencies for changing camera are easy to influence the use of camera, and effect is limited.
Summary of the invention
In view of the foregoing drawbacks, the invention proposes a kind of terminal flexibilities adjusted based on camera master clock to reduce solution party
Method, storage medium and terminal, by recording the frequency point and signal strength of current base station, calculating adjusts the frequency of camera master clock,
And by fine tuning, to guarantee best signal strength.Current mobile intelligent terminal is solved when opening camera, to radio frequency
The interference of antenna and influence to receiving sensitivity, reduce the desense of camera.
In order to achieve the above objectives, the specific technical solution that the present invention uses is as follows:
A kind of terminal flexibility reduction solution adjusted based on camera master clock, comprising:
Step 1 obtains the base station frequency A1 for the most strong emissive porwer that present terminal receives, the base of the most strong emissive porwer
Terminal signaling intensity B1 when being not switched on camera corresponding to frequency of standing A1, the base station frequency A1 of the most strong emissive porwer namely work as
Preceding registration base station frequency；
The master clock frequency D of camera is arranged in step 2；
Step 3, judges whether the master clock frequency D of the camera meets following condition:
D≥12MHz；
n×D-A1≥D/2；
Wherein, n is the frequency of the closest current registration base station frequency of master clock frequency D of camera；
Meet above-mentioned condition, enter step four, do not meet, returns to step 2；
Step 4 saves the master clock frequency D of the camera；
Step 5, judges whether camera has turned on, and has turned on, and enters step six, does not open, then enters step eight；
Step 6, terminal signaling intensity C1 when obtaining opening camera corresponding to the current registration base station frequency；
Step 7 judges whether that C1-B1≤m, m are sensitivity decrease threshold value；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned；
Step 8 saves the master clock frequency D of the camera to get the camera master clock frequency stable to current sensitivity degree
Rate.
Proof is largely tested, desense problem caused by camera is all since multimedia system is supplied to camera
Caused by the harmonic wave of the master clock (MCLK) of sensor.When the harmonic wave of MCLK frequency multiplication is fallen on or near current base station frequency point,
It causes the energy noise peak value near single-point excessively high, will have very big decaying to the receiving sensitivity of the current frequency point of terminal, seriously
When just will appear to fall net.
Therefore the master clock frequency of camera is transferred to its frequency multiplication first and is located near current base station frequency by above-mentioned design, then will
Master clock frequency fine tuning is allowed to multiplied frequency harmonic not on the frequency point for influencing terminal flexibility, avoids the MCLK to desense with this
Influence.Meanwhile input clock of the MCLK as system, usual range are 6-27MHZ, data transmission (MIPI) frequency will meet
MIPI CSI protocol specification, usual range are that camera is autonomously generated between 100-400MHZ, and MCLK is remote to the interference of radio frequency
Influence much larger than MIPI frequency to radio frequency, even if different input clocks, the MIPI frequency generated is also can be constant,
It makes an uproar at the bottom that then MIPI frequency usually can only raise a little entire passband.It is limited to the effect of signals of single frequency point, and MCLK meeting
Cause the energy noise peak value near single frequency point is excessively high radio frequency system sensitivity is caused extremely to be deteriorated, adjusts MCLK pairs
The influence of the better than single change MIPI frequency of the improvement of desense.
Further design, in step 1 also and meanwhile obtain the second emissive porwer that present terminal receives base station frequency A2,
Terminal signaling intensity B2 when being not switched on camera corresponding to the base station frequency A2 of second emissive porwer；
Terminal when being gone back in step 6 while obtaining opening camera corresponding to the base station frequency A2 of second emissive porwer
Signal strength C2；
The then content of step 7 are as follows:
Judge whether C1-B1≤m, and C2-B2≤m；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned.
It further designs, the base station frequency for the third emissive porwer that present terminal receives is gone back while obtained in step 1
A3, the third emissive porwer base station frequency A3 corresponding to terminal signaling intensity B3 when being not switched on camera；
Terminal when being gone back in step 6 while obtaining opening camera corresponding to the base station frequency A3 of the third emissive porwer
Signal strength C3；
The then content of step 7 are as follows:
Judge whether C1-B1≤m, and C2-B2≤m, and C3-B3≤m；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned.
The base station frequency of received first intensity of present terminal institute, the second intensity, third intensity, and corresponding tune are obtained simultaneously
The signal for being allowed to meet three kinds of base station frequencies after section MCLK all will not be impacted, guarantees the better adaptability of terminal, even if mobile
Without MCLK is readjusted near to the base station of the second/tri- intensity, saves and adjust program and flow time.
Further, the amplitude of accommodation that the master clock frequency D of the camera is finely tuned in step 7 is positive and negative 100KHz.
MCLK is usually 6-27MHz, and second step is set as coarse adjustment, and the amplitude being arranged every time is about 1MHz, and the adjustment model finely tuned
It encloses usually within the 10% of coarse adjustment, adjusting 100KHz amplitude is smaller every time, and degree of regulation is more excellent.
Further, the method for the master clock frequency D of camera is set in step 2 for frequency hopping adjusting.Frequency hopping is adjusted i.e. certainly
Frequency hopping is adapted to, is established on the basis of automatic channel quality analysis, is that a kind of frequency is adaptive and adaptive power control phase
In conjunction with technology, it can make frequency hopping communications process avoid disturbed frequency hopping frequency point automatically, and with the smallest transmission power, minimum
Be trapped probability, achieve the purpose that keep high-quality communication for a long time on glitch-free frequency hopping channel.Wherein frequency is adaptive
Control is during frequency hopping communications, and refusal uses those once used but the frequency hop-set of unsuccessful transmission frequency points, i.e.,
Hopping frequencies are taken out in real time and concentrate disturbed frequency point, carry out frequency hopping communications on glitch-free workable frequency point, thus
Greatly improve the quality that signal is received in frequency hopping communications.
Further design, is additionally provided with regulating cycle t, then timing is judged after the completion of step timing at the beginning, step 8
Duration the step of entering a new round one, otherwise continues waiting for until when timing if timing duration is more than or equal to regulating cycle t
It is long reach regulating cycle t after, one the step of into a new round.
A kind of storage medium, is stored with a plurality of instruction, and described instruction is suitable for being loaded by processor to execute and be based on as above-mentioned
The terminal flexibility that camera master clock is adjusted reduces the step of solution.
A kind of terminal, comprising:
At least one camera；
Wireless communication module for terminal called；
It is stored with the memory of executable program code；
The processor coupled with the camera, wireless communication module, memory；
The processor calls the executable program code stored in the memory, executes and is based on camera as above-mentioned
The terminal flexibility that master clock is adjusted reduces solution.
Beneficial effects of the present invention: it ensure that the best signal strength of terminal by finely tuning camera MCLK, solve current
For mobile intelligent terminal when opening camera, the interference to radio-frequency antenna and the influence to receiving sensitivity reduce camera
Desense.
Detailed description of the invention
Fig. 1 is the flow diagram of method；
Fig. 2 is the schematic diagram of terminal；
Fig. 3 is schematic diagram of the harmonic wave in terminal signaling wave of master clock.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of terminal flexibility reduction solution adjusted based on camera master clock, such as Fig. 1, comprising:
Step 1 obtains the base station frequency A1 of most strong emissive porwer that present terminal receives and its corresponding is not switched on camera
When terminal signaling intensity B1, the base station frequency A2 of the second emissive porwer and its corresponding terminal signaling intensity when being not switched on camera
B2, the base station frequency A3 of third emissive porwer and its corresponding terminal signaling intensity B3 when being not switched on camera, the most strong transmitting
The base station frequency A1 of intensity namely currently register base station frequency；
The master clock frequency D of camera is arranged in step 2；
Step 3, judges whether the master clock frequency D of the camera meets following condition:
D≥12MHz；
n×D-A1≥D/2；
Wherein, n is the frequency of the closest current registration base station frequency of master clock frequency D of camera；
Meet above-mentioned condition, enter step four, do not meet, returns to step 2；
Step 4 saves the master clock frequency D of the camera；
Step 5, judges whether camera has turned on, and has turned on, and enters step six, does not open, then enters step eight；
Step 6, terminal signaling intensity C1, the second transmitting when obtaining opening camera corresponding to current registration base station frequency
The base station frequency A3 institute of terminal signaling intensity C2 when opening camera corresponding to the base station frequency A2 of intensity, third emissive porwer are right
Terminal signaling intensity C3 when the opening camera answered；
Step 7 judges whether that C1-B1≤3dB, and C2-B2≤3dB, and C3-B3≤3dB, sensitivity decrease threshold value m are excellent
It is selected as 3dB；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned；
Step 8 saves the master clock frequency D of the camera to get the camera master clock frequency stable to current sensitivity degree
Rate.
The amplitude of accommodation that the master clock frequency D of the camera is finely tuned in step 7 is positive and negative 100KHz.
The method of the master clock frequency D of camera is set in step 2 for frequency hopping adjusting.
This method is provided with regulating cycle t, from step timing at the beginning, judges timing duration after the completion of step 8, if meter
It the step of constantly length is more than or equal to regulating cycle t, then enters a new round one, otherwise continues waiting for until timing duration reaches adjusting
After period t, one the step of into a new round.
The master clock setting range of camera is 6M-27MHZ, and usual default setting is 24MHZ, according to energy size, he
Harmonic wave just occurs with being spaced among RF band for 48MHZ.The position of mark 1 just falls in LTE RX band3 in Fig. 3 example
In the band of (1805-1880MHZ).It just will receive very big decaying with LTE RX band frequency point similar in harmonic wave, even greater than
20db。
A kind of storage medium, is stored with a plurality of instruction, and described instruction is suitable for being loaded by processor to execute and be based on as above-mentioned
The terminal flexibility that camera master clock is adjusted reduces the step of solution.
A kind of terminal, as shown in Figure 2, comprising:
Camera, wireless communication module, memory, the processing coupled respectively with the camera, wireless communication module, memory
Device；
The processor calls the executable program code stored in the memory, executes and is based on camera as above-mentioned
The terminal flexibility that master clock is adjusted reduces solution.
Claims (8)
1. it is a kind of based on camera master clock adjust terminal flexibility reduce solution, be characterized in that include:
Step 1 obtains the base station frequency A1 for the most strong emissive porwer that present terminal receives, the base station frequency of the most strong emissive porwer
Terminal signaling intensity B1 when being not switched on camera corresponding to rate A1, the base station frequency A1 of the most strong emissive porwer namely current note
Volume base station frequency；
The master clock frequency D of camera is arranged in step 2；
Step 3, judges whether the master clock frequency D of the camera meets following condition:
D≥12MHz；
n×D-A1≥D/2；
Wherein, n is the frequency of the closest current registration base station frequency of master clock frequency D of camera；
Meet above-mentioned condition, enter step four, do not meet, returns to step 2；
Step 4 saves the master clock frequency D of the camera；
Step 5, judges whether camera has turned on, and has turned on, and enters step six, does not open, then enters step eight；
Step 6, terminal signaling intensity C1 when obtaining opening camera corresponding to the current registration base station frequency；
Step 7 judges whether that C1-B1≤m, m are sensitivity decrease threshold value；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned；
Step 8 saves the master clock frequency D of the camera to get the camera master clock frequency stable to current sensitivity degree.
2. reducing solution based on the terminal flexibility that camera master clock is adjusted according to claim 1, it is characterised in that:
The base station of the base station frequency A2 for the second emissive porwer that present terminal receives, second emissive porwer are gone back while obtained in step 1
Terminal signaling intensity B2 when being not switched on camera corresponding to frequency A2；
Terminal signaling when being gone back in step 6 while obtaining opening camera corresponding to the base station frequency A2 of second emissive porwer
Intensity C2；
The then content of step 7 are as follows:
Judge whether C1-B1≤m, and C2-B2≤m；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned.
3. reducing solution based on the terminal flexibility that camera master clock is adjusted according to claim 2, it is characterised in that:
The base station of the base station frequency A3 for the third emissive porwer that present terminal receives, the third emissive porwer are gone back while obtained in step 1
Terminal signaling intensity B3 when being not switched on camera corresponding to frequency A3；
Terminal signaling when being gone back in step 6 while obtaining opening camera corresponding to the base station frequency A3 of the third emissive porwer
Intensity C3；
The then content of step 7 are as follows:
Judge whether C1-B1≤m, and C2-B2≤m, and C3-B3≤m；
It is to enter step eight；
Otherwise the master clock frequency D of the camera, return step six are finely tuned.
4. reducing solution based on the terminal flexibility that camera master clock is adjusted according to claim 1, it is characterised in that:
The amplitude of accommodation that the master clock frequency D of the camera is finely tuned in step 7 is positive and negative 100KHz.
5. reducing solution based on the terminal flexibility that camera master clock is adjusted according to claim 1, it is characterised in that:
The method of the master clock frequency D of camera is set in step 2 for frequency hopping adjusting.
6. reducing solution based on the terminal flexibility that camera master clock is adjusted according to claim 1, it is characterised in that:
It is additionally provided with regulating cycle t, then timing duration is judged after the completion of step timing at the beginning, step 8, if timing duration is greater than
Equal to regulating cycle t, then the step of entering a new round one, after otherwise continuing waiting for until timing duration reaches regulating cycle t, into
The step of entering a new round one.
7. a kind of storage medium, is characterized in that: being stored with a plurality of instruction in storage medium, described instruction is suitable for being loaded by processor
To execute the step for reducing solution based on the terminal flexibility that camera master clock is adjusted as described in any one of claim 1 to 6
Suddenly.
8. a kind of terminal, be characterized in that include:
At least one camera；
Wireless communication module for terminal called；
It is stored with the memory of executable program code；
The processor coupled respectively with the camera, wireless communication module, memory；
The processor calls the executable program code stored in the memory, executes as claim 1 to 6 is any
Solution is reduced based on the terminal flexibility that camera master clock is adjusted described in.
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| 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 |
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Cited By (1)
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| CN111491072A (en) * | 2020-04-20 | 2020-08-04 | 维沃移动通信有限公司 | Pixel clock frequency adjusting method and device and electronic equipment |
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| CN109743066B (en) | 2020-12-15 |
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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. |