CN105467407A - Method and device of reducing memory frequency interference to GPS, and mobile terminal - Google Patents
Method and device of reducing memory frequency interference to GPS, and mobile terminal Download PDFInfo
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- CN105467407A CN105467407A CN201610023926.1A CN201610023926A CN105467407A CN 105467407 A CN105467407 A CN 105467407A CN 201610023926 A CN201610023926 A CN 201610023926A CN 105467407 A CN105467407 A CN 105467407A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The embodiment of the invention discloses a method and device of reducing memory frequency interference to a GPS (Global Positioning System), and a mobile terminal. The method comprises: detecting whether a GPS is turned on; and when detecting that the GPS is turned on, controlling the work frequency of an electronic device to be higher or lower than the work frequency of a GPS receiver. In the technical scheme provided in the embodiment, the method and device control the work frequency of an electronic device, allowing the work frequency of the electronic device to skip the work frequency of the GPS receiver, reducing the electronic device interference to the GPS receiver, and improving the stability of the GPS receiver.
Description
Technical field
The embodiment of the present invention relates to GPS technology field, particularly relates to a kind of method, device and the mobile terminal that reduce clocked memory and disturb GPS.
Background technology
GPS (GlobalPositioningSystem, GPS) is that one utilizes GPS position location satellite, the system of position in real time in the world, navigating.At present, as a kind of location, navigational system of maturation, GPS is widely used.
In client, GPS is mainly utilized to receive gps satellite signal, and according to the satellite-signal received space of planes position definitely.GPS is easily subject to the interference of outside various signal.
In the course of the work, GPS is easily subject to the interference of other electron devices.Such as, the meeting of GPS working frequency range and Double Data Rate random access memories (DoubleDataRate, DDR) frequency multiplication exist occurs simultaneously, and can introduce noise, reduce GPS performance in the inside of GPS.
Summary of the invention
The embodiment of the present invention provides a kind of method, device and the mobile terminal that reduce clocked memory and disturb GPS, to solve electron device to bring noise problem to GPS.
First aspect, embodiments provides a kind of method reducing clocked memory and disturb GPS, comprising:
Detect GPS whether to open;
When detecting that GPS opens, control the frequency of operation of frequency of operation higher or lower than GPS of electron device.
Second aspect, the embodiment of the present invention additionally provides a kind of device reducing clocked memory and disturb GPS, comprising:
Whether GPS detecting unit, open for detecting GPS;
Frequency of operation adjustment unit, for when detecting that GPS opens, controls the frequency of operation of frequency of operation higher or lower than GPS of electron device.
The third aspect, the embodiment of the present invention additionally provides a kind of mobile terminal, and described mobile terminal is integrated with the device that the reduction clocked memory described in second aspect disturbs GPS.
The technical scheme that the embodiment of the present invention provides, when detecting that GPS starts, by controlling the frequency of operation of electron device, make the frequency of operation of the frequency of operation tripping GPS of electron device, reduce the interference of electron device to GPS, improve the stability of GPS.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce doing one to the accompanying drawing used required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of that the embodiment of the present invention one provides reduces the schematic flow sheet of clocked memory to the method that GPS disturbs;
Fig. 2 is that a kind of that the embodiment of the present invention two provides reduces the schematic flow sheet of clocked memory to the method that GPS disturbs;
Fig. 3 is that a kind of that the embodiment of the present invention three provides reduces the structural representation of clocked memory to the device that GPS disturbs.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, hereinafter with reference to the accompanying drawing in the embodiment of the present invention, by embodiment, technical scheme of the present invention is described clearly and completely, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
Fig. 1 is that a kind of that the embodiment of the present invention one provides reduces the schematic flow sheet of clocked memory to the method that GPS disturbs.The method is applicable to the situation using GPS, and can be performed the device that GPS disturbs by the reduction clocked memory be configured in mobile terminal, described device can by software and/or hardware implementing.See Fig. 1, the reduction clocked memory that the present embodiment provides specifically comprises the method that GPS disturbs:
Whether S110, detection GPS open;
When user needs to use navigation feature, such as, when using GPS position and navigate on navigation map, need to open GPS, the opening of GPS now can be detected.
S120, when detecting that GPS opens, control the frequency of operation of electron device higher or lower than the frequency of operation of GPS.
When GPS works, easily be subject to the interference of the electron device worked in terminal, this interference is mainly because the frequency of operation of electron device and the frequency of operation of GPS are relatively brought, such as, the frequency of operation of CPU, internal memory, video memory, discharge circuit device, frequency tuning circuit device etc. and the frequency of operation store interleaving of GPS, the work of interference GPS.And the general of electron device in mobile terminal all controls to carry out exchanges data by CPU, for the adjustable electron device of frequency of operation, its frequency of operation can be controlled by CPU, controls the frequency of operation of frequency of operation higher or lower than GPS of these electron devices by CPU.
Exemplary, when GPS navigation function is opened, map application layer starts to play up, now need central processing unit (CentralProcessingUnit, CPU) process data are accelerated, the exchange frequency of CPU and internal memory increases, and the frequency of operation of internal memory can produce severe jamming to GPS.The internal memory now used in the terminal is all DDR series memory, particularly, can the frequency of operation of control DDR higher or lower than the frequency of operation of GPS, namely avoid the frequency of operation of GPS, reduce the frequency of operation of DDR to the interference of GPS.Described GPS frequency of operation is positioned at L1 frequency range or L2 frequency range.Wherein, the scope of L1 frequency range is: the scope of 1575.42MHz ± 1.023MHz, L2 frequency range is: 1227.6MHz ± 1.023MHz.When GPS frequency of operation is positioned at L1 frequency range, can the frequency of operation of control DDR higher than 1575.42MHz+1.023MHz, or the frequency of operation of control DDR is lower than 1575.42MHz-1.023MHz.It should be noted that, due to a period of time after GPS opens, need to carry out accelerating process and open the signal of catching satellite, therefore, when the frequency of operation of control DDR, make the frequency of operation of DDR can not too much lower than the frequency of operation of GPS.As can be seen from the band limits of GPS, the frequency of operation of GPS is higher, when frequency of operation higher or lower than GPS of the frequency of operation of control DDR, general is all the frequency of operation needing to be increased to from DDR reference frequency needs, now, the frequency of operation of DDR can meet and exchanges data at high speed with CPU, meets the needs of navigational system process process data at high speeds.
The frequency of operation of general DDR is all into multiple and changes, and the change of multiple is decided by the Clock Multiplier Factor of DDR, can by changing the frequency of operation of the Clock Multiplier Factor control DDR of DDR.In addition, when control DDR frequency of operation, need the frequency of operation of the frequency of operation of DDR and CPU adaptive, can not far above or far below the frequency of operation of CPU.Such as, suppose that mobile terminal saves as DDR2553MHz in using, then, when the Clock Multiplier Factor of control DDR is 2, the frequency of operation of DDR is 2*553MHz=1106MHz, lower than L1 and L2 frequency range; When the Clock Multiplier Factor of control DDR is 4, the frequency of operation of DDR2 is 4*553MHz=2212MHz, higher than L1 and L2 frequency range.
The technical scheme that the present embodiment provides, when detecting that GPS starts, by controlling the frequency of operation of the frequency of operation tripping GPS of electron device, can reduce the interference of electron device to GPS, improving the stability of GPS.
Embodiment two
Fig. 2 is that a kind of that the embodiment of the present invention two provides reduces the schematic flow sheet of clocked memory to the method that GPS disturbs.The present embodiment is optimized on the basis of above-described embodiment, and see Fig. 2, the reduction clocked memory that the present embodiment provides specifically comprises the method that GPS disturbs:
Whether S210, detection GPS open;
S220, when detecting that GPS opens, application setting number CPU core work to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory;
Wherein, described setting number be greater than 1 integer;
When general procedure is in operation and processes mass data, the running frequency of CPU can improve, and accordingly, the frequency of operation of internal memory can adaptive change.One end time after GPS starts, CPU needs high-speed cruising to process the mass data in navigation procedure, controls the frequency of operation of frequency of operation higher or lower than GPS of internal memory by the work of application CPU multinuclear.Such as, DDR2553MHz is saved as in adopting, when Present navigation program application CPU tetra-core works, the dominant frequency of four kernels is 1GHz, can make the Clock Multiplier Factor 4 of DDR2, now the frequency of operation of internal memory is 4*553MHz=2212MHz, because the frequency of operation of DDR internal memory is far above the highest scope 1575.42MHz+1.023MHz of L1 frequency range, the frequency of operation of internal memory neither disturbs the work of GPS, also can meet Present navigation normal program operation.When GPS navigation is opened, when CPU works under three cores, the frequency of operation of DDR is 3*553MHz=1659MHz, close with L1 frequency, now can control CPU two Core Operational applied for, the Clock Multiplier Factor of DDR can be made to be that 2, DDR can in the rising stage of clock and each transmission primaries data of decrement phase, now the frequency of operation of DDR internal memory is 2*553MHz=1106MHz, lower than L1 frequency range.
It should be noted that, can apply for the number of the CPU needing work according to the groundwork frequency synthesis of the frequency of operation of CPU and different internal memory, particularly, the determination mode of the setting number of CPU core can by following process:
The numerical value pre-set is defined as described setting number; Or,
Determine described setting number according to the parameter of described internal memory and preset relation table, in wherein said preset relation table, comprise the corresponding relation of at least one memory parameters and setting number.
Such as, for 4 core CPU processors, the dominant frequency of each kernel is 1GHz, saves as DDR2553MHz in use, then the preset relation table set up is as follows:
| CPU core number | DDR frequency of operation |
| 1 | 553MHz |
| 2 | 2*553MHz |
| 3 | 3*553MHz |
| 4 | 4*553MHz |
According to the above-mentioned parameter determining CPU and DDR, preferably when detecting that GPS navigation is opened, can apply for four core CPU standard-sized sheets, the frequency of operation of DDR is higher than the L1 frequency range of GPS and L2 frequency range.
It should be noted that, the difference of the CPU used according to mobile terminal and the model of internal memory, preset relation can be different, such as, for DDR31333MHz, when the Clock Multiplier Factor of DDR3 is 2, needs to apply for 5-6 CPU core work.Therefore, the preset relation of CPU number and DDR frequency of operation can be set up according to the running frequency of CPU and DDR used concrete on mobile terminal.
After the number of CPU is determined, control CPU overclocking or frequency reducing can also realize internal memory frequency of operation tripping GPS working frequency range.Particularly, when the CPU core number of applying for is determined, by CPU overclocking or frequency reducing to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory.The dominant frequency of such as CPU is 1GHz, and after application dinuclear work, by each CPU core overclocking 10%, each CPU core frequency will reach 1.1GHz, and the Clock Multiplier Factor of DDR2553MHz can be made to be 3, and control clocked memory is 1659MHz.
S230, when capturing satellite-signal, the work of release CPU multinuclear.
After capturing satellite-signal, the pseudo-distance of receiving antenna to satellite and the rate of change of distance can be calculated, demodulate the data such as satellite orbit parameter.According to these data, GPS can position calculating by positioning calculation method, calculates the information such as the latitude and longitude coordinates of user geographic location, obtains user's current location of described mobile terminal.The mainly tracking operation of satellite of arriving of ensuing GPS navigation, the process of gps data can reduce a lot, and open CPU multinuclear if now continue and run, can cause waste, the power consumption of mobile terminal also can increase.Now, the work of CPU multinuclear can be discharged, to optimize the operation of Navigator.For, the dominant frequency of kernel is 1GHz, saves as the mobile terminal of DDR2553MHz in use, preferably after capturing satellite-signal, applies for 2 or 3 CPU core work.When application 2 CPU core work, the frequency of DDR is 1106MHz, and lower than L1 frequency range and the L2 frequency range of GPS, DDR frequency of operation now exchanges data with can ensureing internal memory and CPU two-forty, meets the requirement of GPS navigation; When application 3 CPU core work, the frequency of DDR is 1659MHz, very close with GPS L1 frequency range, but owing to having captured satellite-signal, GPS declines to the susceptibility of the signal noise introduced due to DDR frequency multiplication, now the frequency of operation of DDR does not affect the normal work of GPS, DDR frequency interferences on the impact of GPS navigation error in the error range of GPS.
The technical scheme that the present embodiment provides, by the numerical value that pre-sets or according to the parameter of DDR and the work number of preset relation table determination CPU core, and the CPU core of application setting number adjusts the frequency of operation of DDR, to make the frequency of operation of the frequency of operation tripping GPS of DDR, it is convenient to control, and reduces the interference to GPS.
Embodiment three
Fig. 3 is that a kind of that the embodiment of the present invention three provides reduces the structural representation of clocked memory to the device that GPS disturbs, and see Fig. 3, described device comprises:
Whether GPS detecting unit 310, open for detecting GPS;
Frequency of operation adjustment unit 320, for when detecting that GPS opens, controls the frequency of operation of frequency of operation higher or lower than GPS of electron device.
Further, described frequency of operation adjustment unit 320, specifically for:
The CPU core work of application setting number is to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory; Wherein said setting number be greater than 1 integer.
Further, described frequency of operation adjustment unit 320, also for:
When the CPU core number of applying for is determined, by CPU overclocking or frequency reducing to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory.
In addition, the number of the CPU needing work can be applied for according to the groundwork frequency synthesis of the frequency of operation of CPU and different internal memory.
Further, described frequency of operation adjustment unit 320 comprises:
First kernel number determining unit 321, for being defined as described setting number by the numerical value pre-set;
Second kernel number determining unit 322, for determining described setting number according to the parameter of described internal memory and preset relation table, comprises the corresponding relation of at least one memory parameters and setting number in wherein said preset relation table.
Further, described device also comprises:
CPU multinuclear releasing unit 330, for after the CPU core work of application setting number is with the frequency of operation of the frequency of operation controlling internal memory higher or lower than GPS, when capturing satellite-signal, release CPU multinuclear works.
After capturing satellite-signal, GPS navigation success, obtain user's current location of described mobile terminal, the process of gps data can reduce a lot, and open CPU multinuclear if now continue and run, can cause waste, the power consumption of mobile terminal also can increase.Now, the work of CPU multinuclear can be discharged by CPU multinuclear releasing unit 330, or reduce the work number of Present navigation application CPU core, to optimize the operation of Navigator.
Wherein, described GPS frequency of operation is positioned at L1 frequency range or L2 frequency range.
The method that the reduction clocked memory that said apparatus can perform any embodiment of the present invention to be provided disturbs GPS, possesses the corresponding functional module of manner of execution and beneficial effect.
In addition, the embodiment of the present invention additionally provides a kind of mobile terminal, and described mobile terminal is integrated with the device that above-mentioned reduction clocked memory disturbs GPS.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (11)
1. reduce the method that clocked memory disturbs GPS, it is characterized in that, comprising:
Detect global position system GPS whether to open;
When detecting that GPS opens, control the frequency of operation of frequency of operation higher or lower than GPS of electron device.
2. method according to claim 1, is characterized in that, the frequency of operation of described control electron device, higher or lower than the frequency of operation of GPS, comprises;
The central processor CPU Core Operational of application setting number is to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory;
Wherein said setting number be greater than 1 integer.
3. method according to claim 2, is characterized in that, the frequency of operation of described control electron device, higher or lower than the frequency of operation of GPS, also comprises:
When the CPU core number of applying for is determined, by CPU overclocking or frequency reducing to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory.
4. method according to claim 2, is characterized in that, the determination mode of described setting number, comprising:
The numerical value pre-set is defined as described setting number; Or,
Determine described setting number according to the parameter of described internal memory and preset relation table, in wherein said preset relation table, comprise the corresponding relation of at least one memory parameters and setting number.
5. method according to claim 2, is characterized in that, after the CPU core work of application setting number is with the frequency of operation of the frequency of operation controlling internal memory higher or lower than GPS, also comprises:
When capturing satellite-signal, the work of release CPU multinuclear.
6. reduce the device that clocked memory disturbs GPS, it is characterized in that, comprising:
Whether GPS detecting unit, open for detecting GPS;
Frequency of operation adjustment unit, for when detecting that GPS opens, controls the frequency of operation of frequency of operation higher or lower than GPS of electron device.
7. device according to claim 6, is characterized in that, described frequency of operation adjustment unit, specifically for:
The CPU core work of application setting number is to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory; Wherein said setting number be greater than 1 integer.
8. device according to claim 7, is characterized in that, described frequency of operation adjustment unit, also for:
When the CPU core number of applying for is determined, by CPU overclocking or frequency reducing to control the frequency of operation of frequency of operation higher or lower than GPS of internal memory.
9. device according to claim 7, is characterized in that, described frequency of operation adjustment unit comprises:
First kernel number determining unit, for being defined as described setting number by the numerical value pre-set;
Second kernel number determining unit, for determining described setting number according to the parameter of described internal memory and preset relation table, comprises the corresponding relation of at least one memory parameters and setting number in wherein said preset relation table.
10. device according to claim 7, is characterized in that, also comprises:
CPU multinuclear releasing unit, for after the CPU core work of application setting number is with the frequency of operation of the frequency of operation controlling internal memory higher or lower than GPS, when capturing satellite-signal, release CPU multinuclear works.
11. 1 kinds of mobile terminals, is characterized in that, described mobile terminal is integrated with the device that the reduction clocked memory described in any one of claim 6-10 disturbs GPS.
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| CN109217946A (en) * | 2018-09-11 | 2019-01-15 | 普联技术有限公司 | Improve method, apparatus, storage medium and the WIFI equipment of WIFI performance |
| CN115826725A (en) * | 2023-01-06 | 2023-03-21 | 荣耀终端有限公司 | Dynamic voltage frequency adjustment method and related equipment |
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| CN105467407B (en) | 2018-03-20 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |