CN103973804B - Method and device for setting terminal time - Google Patents
Method and device for setting terminal time Download PDFInfo
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- CN103973804B CN103973804B CN201410212112.3A CN201410212112A CN103973804B CN 103973804 B CN103973804 B CN 103973804B CN 201410212112 A CN201410212112 A CN 201410212112A CN 103973804 B CN103973804 B CN 103973804B
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Abstract
The embodiment of the invention discloses a method and device for setting terminal time. The method for setting the terminal time comprises the steps of acquiring the network time of at least two servers, generating the target set time according to the acquired network time of the servers and setting the terminal time based on the target set time. By adopting the technical scheme, it can be achieved that when acquisition of the network time of part of servers fails due to a poor network environment, the terminal time can still be set based on the network time acquired from the other servers, and the defect that when the terminal time is set based on single network time, errors will occur if the network time is attacked and consequently the terminal time setting accuracy will be greatly lowered can be overcome.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of method to set up and device of terminal time.
Background technology
At present, the terminal such as smart mobile phone, computer, personal digital assistant is used by increasing user.Terminal is usual
With with clock and watch or wrist-watch identical function, the setting and display of time can be carried out.User can be whole with real time inspection and setting
The end time, to arrange go off daily activity.In addition, the application program in terminal may be based on terminal time realizes thing
Part prompting function.
Current time is obtained from the webserver, is that terminal determines one of mode of time.For example, in ARIXTRA
(android), in mobile phone, there is function when one automatic pair easily and practical, be by ntp (Network Time
Protocol, NTP) ntp servers from network obtain network time, then update mobile phone time.But
Ntp servers are public, and are vulnerable to attack, and need networking just access, so when there is often the network for obtaining
Between mistake mistake when causing pair, experience very poor.
The content of the invention
The embodiment of the present invention provides a kind of method to set up and device of terminal time, to realize the accurate right of terminal time
When, lift Consumer's Experience.
In a first aspect, embodiments providing a kind of method to set up of terminal time, the method includes：
Obtain the network time of at least two servers；
The goal setting time is generated according at least two accessed network times；
Terminal time is configured based on the goal setting time.
Second aspect, the embodiment of the present invention additionally provide a kind of setting device of terminal time, and the device includes：
Network time acquiring unit, for obtaining the network time of at least two servers；
Goal setting time signal generating unit, during for generating goal setting according at least two accessed network times
Between；
Terminal time setting unit, for being configured to terminal time based on the goal setting time.
Technical scheme provided in an embodiment of the present invention, can realize from multiple servers obtaining network time, so as to can
Terminal time is set so that a goal setting time is obtained according to acquired multiple network times, therefore when because of network environment
Difference and cause part server network time obtain failure when, still can based on the network got from other servers when
Between terminal time is set time, and can also overcome when setting time to terminal time merely with the single network time, if
Network time is subject to malicious attack and this drawback of accuracy rate when mistake can then substantially reduce terminal-pair occurs.
Description of the drawings
Fig. 1 is a kind of schematic flow sheet of the method to set up of terminal time that the embodiment of the present invention one is provided；
Fig. 2 is a kind of schematic flow sheet of the method to set up of terminal time that the embodiment of the present invention two is provided；
Fig. 3 is a kind of terminal time axle schematic diagram that the embodiment of the present invention two is provided；
Fig. 4 is a kind of structural representation of the setting device of terminal time that the embodiment of the present invention three is provided.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Technical scheme provided in an embodiment of the present invention is illustrated for clearer, when now to the terminal described in the embodiment of the present invention
Between carry out specific explanations.Terminal time in the embodiment of the present invention refers to the time of operating system in terminal, is with terminal sheet
The time produced on the basis of ground clock.Terminal local clock just starts timework during electricity in terminal, produces in real time simultaneously
Show the terminal time that vary.The terminal time can be configured, and then terminal local clock is according to set
Terminal time re-start timing, produce and show newly-installed terminal time.
Embodiment one
Fig. 1 is a kind of schematic flow sheet of the method to set up of terminal time that the embodiment of the present invention one is provided.The present embodiment
Network time for there is provided using server is applicable to come situation about being calibrated to terminal time, the method can by terminal when
Between setting device performing, described device is realized by software and/or hardware.Described device can be built in terminal inner,
Also can be individually present as the product of row data communication can be entered with terminal.Referring to Fig. 1, the method specifically includes following step
Suddenly：
110th, obtain the network time of at least two servers.
In the present embodiment, the network time of at least two servers is obtained, can be specially：With polling mode or parallel side
Formula initiates access request to multiple servers；Receive the network time that multiple servers are returned according to access request.
Wherein, it is so-called to be referred to multiple servers initiation access request with polling mode：According to setting to multiple clothes
The access time of business device, it is asynchronous to initiate access request to multiple servers；It is so-called to initiate to visit to multiple servers in a parallel fashion
Ask that request is referred to：Access request is initiated to multiple servers simultaneously.
The server for receiving access request is that for a kind of terminal time equipment synchronized with current actual time, this sets
It is standby a network time synchronous with current actual time to be returned according to access request.Preferably, the server is
Ntp servers.
120th, the goal setting time is generated according at least two accessed network times.
In the present embodiment, can calculate directly to each accessed network time according to the computational methods of setting
To a goal setting time.Specifically, the meansigma methodss of each accessed network time can be directly calculated, by the meansigma methodss
As the goal setting time；Or, each accessed network time is weighted and obtains the goal setting time.Wherein,
The weight coefficient of each network time may be based on the degree of belief to each server that local historical statistical data is obtained, and obtain
To the weight coefficient sum of all-network time should be 1.For example, get the network time of three servers altogether, first
The weight coefficient of the network time A of server is the degree of belief 0.5 to first server, the network time of second server
The weight coefficient of B is the degree of belief 0.3 to second server, and the weight coefficient of the network time C of the 3rd server is the
Degree of belief 0.2 to three servers, the goal setting time is：0.5A+0.3B+0.2C.
It is after each network time is got, just according to accessed multiple network times in view of the present embodiment
Generate the goal setting time, therefore terminal time when getting each network time and terminal when generating the goal setting time
Certain intervals are had between time.Also, during with polling mode to multiple servers initiation access request, get each network
The terminal time during time can be different；When initiating access request to multiple servers in a parallel fashion, due to each service
The difference of device performance and residing network environment, terminal time when getting each network time would also vary from.
Therefore, in order to realize, during accurate pair of terminal time, after each network time is got, also further to divide
The time interval between terminal time when not determining current terminal time and getting each network time, according to being determined
Time interval and each accessed network time obtain multiple current times, and then the multiple current times for obtaining are taken
Meansigma methodss or weighted calculation obtain the goal setting time.Due to there may be difference between multiple network times for getting, institute
The current time determined by the basis of network time is also likely to be what is differed, can be when will be multiple current according to setting strategy
Between processed, to determine the goal setting time.
130th, terminal time is configured based on the goal setting time.
After the goal setting time is generated according at least two accessed network times, can directly by current end
End set of time is by goal setting time for generating.It is by the multiple current times for obtaining according to above-mentioned in the goal setting time
Average or in the case that weighted calculation is obtained, can also first calculate the multiple current times that will be obtained and average or weight meter
The duration that calculation obtains spent by the goal setting time, according to the goal setting time to be added the time value pair that obtains with the duration
Current terminal time is configured.
Technical scheme provided in an embodiment of the present invention, can realize from multiple servers obtaining network time, so as to can
Terminal time is set so that a goal setting time is obtained according to acquired multiple network times, therefore when because of network environment
Difference and cause part server network time obtain failure when, still can based on the network got from other servers when
Between terminal time is set time, and can also overcome when setting time to terminal time merely with the single network time, if
Network time is subject to malicious attack and this drawback of accuracy rate when mistake can then substantially reduce terminal-pair occurs.
Embodiment two
Fig. 2 be the embodiment of the present invention two provide a kind of terminal time method to set up schematic flow sheet, the present embodiment
On the basis of the various embodiments described above, the goal setting time will be generated according at least two accessed network times and be based on
The goal setting time is configured the two steps and further optimizes to terminal time.Referring to Fig. 2, the method include as
Lower step：
210th, obtain the network time of at least two servers.
220th, determine each current time corresponding with each accessed network time.
In the present embodiment, can be according to formula CurrTimei=NetTimei+ΔTi, it is determined that with each accessed net
Network time corresponding each current time.Wherein, CurrTimeiFor i-th current time, NetTimeiFor accessed i-th
Individual network time, Δ TiFor between the time between present terminal time and the terminal acquisition time for getting i-th network time
Every i is 1 to the network time number for getting natural number.
Wherein, the present terminal time is the institute to be performed after the network time for getting at least two servers
State terminal time current during the step for determining each current time corresponding with each accessed network time, terminal
Acquisition time Δ TiTo get terminal time during i-th network time.And described each current time is with accessed
Each network time on the basis of determined by the time.
Further, the present terminal time and get i-th network time the terminal acquisition time between time between
Every computational methods, can be specially：When calculating gets the terminal acquisition time of i-th network time with the reference terminal for setting
Between between the second time interval；Calculate between the very first time between the present terminal time and the reference terminal time of setting
Every；The difference that second time interval was spaced with the very first time is used as present terminal time and the end for getting i-th network time
Time interval Δ T between the acquisition time of endi。
One of the present embodiment preferred embodiment in, the above-mentioned reference terminal time for setting is that terminal system starts
Time.The terminal system starting time refers to terminal time during this starting up of terminal.Therefore, it is determined that with it is accessed
Each network time corresponding each current time before, also include：
Detection gets the terminal of i-th network time and obtains the time interval between time and terminal system starting time
ΔT1i；
Detect the time interval Δ T2 between the present terminal time and terminal system starting timei；
According to formula Δ Ti=Δ T2i-ΔT1i, calculate the present terminal time and get i-th network time
Time interval Δ T between the terminal acquisition timei。
230th, to determined by, at least two current times are screened, and generate target according to the current time that screening is obtained
The setting time.
In a specific embodiment of the present embodiment, it is determined that corresponding with each accessed network time each
After individual current time, the difference determined by calculating between each current time, according to the difference and setting it is fault-tolerant when
The long current time to determined by is screened；When the meansigma methodss of each current time that screening is obtained are as goal setting
Between.
Wherein, the current time according to determined by the fault-tolerant duration pair of the difference and setting is screened, and specifically can be wrapped
Include：If the difference of certain current time and other N number of current times is all higher than the fault-tolerant duration for setting, delete this it is current when
Between, wherein N is the amount threshold of setting.
Certainly, also at least two current times can be screened according to determined by other modes pair, for example, directly be deleted
Determined by maximum current time at least two current times and minimum current time.By screening obtain each is current
Time is weighted and obtains the goal setting time.Weight coefficient can be determined according to the degree of belief of network time corresponding server.
240th, calculate the current time generation for performing that the current time to determined by is screened and obtained according to screening
The duration spent by the goal setting time.
In the present embodiment, after the goal setting time is generated, current terminal time and terminal system can be detected again
Time interval between system starting time, this time is spaced and present terminal time and terminal system described in above-mentioned perform detection
Time interval Δ T2 between starting timeiDifference as perform the current time to determined by screened and according to sieve
The current time that choosing is obtained generates the duration for being spent the goal setting time.
250th, the goal setting time be added the new goal setting time that obtains with calculated duration, when terminal is set
Between be the new goal setting time.
For the clearer method illustrated described in the present embodiment, the network of the three ntp servers for now being got with basis
Time, illustrate as a example by being configured come the smart mobile phone time to being provided with Android operation system.The setting up procedure includes：
Obtain the network time of three ntp servers；
If get the network time ntpTime_A of first ntp server, by calling
Between SystemClock.elapsedRealtime () function check current terminal time and terminal system starting time
Time interval elapsedTime_A；
If get the network time ntpTime_B of second ntp server, by calling
Between SystemClock.elapsedRealtime () function check current terminal time and terminal system starting time
Time interval elapsedTime_B；
If get the network time ntpTime_C of the 3rd ntp server, by calling
Between SystemClock.elapsedRealtime () function check current terminal time and terminal system starting time
Time interval elapsedTime_C；
After the network time for getting three ntp servers, by calling
SystemClock.elapsedRealtime (), detects the time interval of current terminal time and terminal system starting time
Current_ElapsedTime, then according to the network time ntpTime_A of first ntp server calculates first working as
Front time currTime_A, calculates second current time according to the network time ntpTime_B of second ntp server
CurrTime_B, calculates the 3rd current time according to the network time ntpTime_C of the 3rd ntp server
CurrTime_C, wherein first current time currTime_A=ntpTime_A+ (current_ElapsedTime-
ElapsedTime_A), second current time currTime_B=ntpTime_B+ (current_ElapsedTime-
ElapsedTime_B), the 3rd current time currTime_C=ntpTime_C+ (current_ElapsedTime-
elapsedTime_C)；
Screening strategy based on setting deletes the invalid current time in above three current time；
The current time after screening is weighted based on the weighted strategy of setting, to obtain the goal setting time；
By call function SystemClock.setCurrentTimeMillis (currTime+
SystemClock.elapsedRealtime ()-current_ElapsedTime), will be set to terminal time：currTime
+SystemClock.elapsedRealtime()-current_ElapsedTime。
Wherein, the deletion strategy of above-mentioned setting can be specially：
Setting one fault-tolerant duration timeErrorThreshold, calculate respectively currTime_A, currTime_B it
Between time difference time_A_B, time difference time_B_C between currTime_B, currTime_C, currTime_A,
Time difference time_A_C between currTime_C；
If time_B_C, time_A_C are all higher than timeErrorThreshold, and time_A_B is less than
TimeErrorThreshold, then judge that currTime_C error ratios are larger, be invalid current time, currTime_C is deleted
Fall.
Fig. 3 is a kind of terminal time axle schematic diagram that the embodiment of the present invention two is provided.Referring to Fig. 3：
Terminal time when this time starting shooting for terminal at terminal time axle starting point O；
At first timing node O1：The network time ntpTime_A of first ntp server is got, detection is worked as
Very first time interval 310 between front terminal time O1 and terminal system starting time O；
At second timing node O2：The network time ntpTime_B of second ntp server is got, detection is worked as
The second time interval 320 between front terminal time O2 and terminal system starting time O；
At the 3rd timing node O3：The network time ntpTime_C of the 3rd ntp server is got, detection is worked as
The 3rd time interval 330 between front terminal time O3 and terminal system starting time O；
At the 4th timing node O4：The current terminal time O4 of detection and terminal system starting time O the 4th when
Between be spaced 340；
Calculate current terminal time O4 to obtain with the terminal for getting first ntp server network time ntpTime_A
The 5th time interval 350 between the time O1 difference of very first time interval 310 (i.e. the 4th time interval 340 with) is taken, by the
The network time ntpTime_A and 350 sum of the 5th time interval of one ntp server is defined as first current time；
Calculate current terminal time O4 and the terminal for getting second ntp server network time ntpTime_B
The 6th time interval 360 (i.e. the difference of the 4th time interval 340 and the second time interval 320) between acquisition time O2, will
The network time ntpTime_B and 360 sum of the 6th time interval of second ntp server is defined as second current time；
Calculate current terminal time O4 to obtain with the terminal for getting the 3rd ntp server network time ntpTime_C
The 7th time interval 370 (i.e. the difference of the 4th time interval 340 and the 3rd time interval 330) between time O3 is taken, by
The network time ntpTime_C and 370 sum of the 7th time interval of three ntp servers is defined as the 3rd current time；
In the 8th time interval 380 at the 4th timing node O4 and between the 5th timing node O5：To institute
It is determined that each current time screened, the goal setting time is generated according to the current time that obtains of screening；
At the 5th timing node O5：To be set to terminal time at goal setting time and the 4th timing node O4
And the sum of the 8th time interval 380 between the 5th timing node O5.
The technical scheme that the present embodiment is provided, is not directly to screen and average treatment the network time for getting
The goal setting time is obtained, but by between current terminal time and the terminal acquisition time for getting each network time
Time interval, and perform the current time generation target that the current time to determined by is screened and obtained according to screening
Duration spent by the setting time, the two time interval factors are taken into account in the lump, finally by acquired network time and
The time interval factor is configured to terminal time determining jointly the new goal setting time.Obviously, such setting
Mode can be greatly improved to degree of accuracy during terminal time school, lift Consumer's Experience.
Example IV
Fig. 4 be the embodiment of the present invention three provide a kind of terminal time setting device structural representation, the present embodiment
The situation for being applicable to using the network time of server offer be calibrated terminal time.Referring to Fig. 4, the tool of the device
Body structure is as follows：
Network time acquiring unit 410, for obtaining the network time of at least two servers；
Goal setting time signal generating unit 420, sets for generating target according at least two accessed network times
Put the time；
Terminal time setting unit 430, for being configured to terminal time based on the goal setting time.
Further, goal setting time signal generating unit 420, including：
Current time determination subelement 4201, for according to formula CurrTimei=NetTimei+ΔTi, it is determined that with obtained
Each network time corresponding each current time got, wherein CurrTimeiFor i-th current time, NetTimeiFor institute
I-th network time for getting, Δ TiFor the present terminal time and get i-th network time terminal obtain the time it
Between time interval, i is 1 to the network time number for getting natural number；
Current time processes subelement 4202, screens at least two current times to determined by, according to sieve
The current time that choosing is obtained generates the goal setting time.
Further, goal setting time signal generating unit 420 also includes time interval computation subunit 4200, for working as
Before front time determination subelement 4201 determines each current time corresponding with each accessed network time：
Detection gets the terminal of i-th network time and obtains the time interval between time and terminal system starting time
ΔT1i；
Detect the time interval Δ T2 between the present terminal time and terminal system starting timei；
According to formula Δ Ti=Δ T2i-ΔT1i, calculate the present terminal time and get i-th network time
Time interval Δ T between the terminal acquisition timei。
Further, current time processes subelement 4202, specifically for：
Difference determined by calculating between each current time, according to the fault-tolerant duration of the difference and setting to really
Fixed current time is screened；
The meansigma methodss of each current time that screening is obtained are used as the goal setting time.
On the basis of above-mentioned technical proposal, terminal time setting unit 430, specifically for：
Calculate the current time generation target for performing that the current time to determined by is screened and obtained according to screening
The duration spent by the setting time；
The goal setting time is added the new goal setting time that obtains with calculated duration, when arranging terminal
Between be the new goal setting time.
The said goods can perform the method provided by any embodiment of the present invention, possess the corresponding functional module of execution method
And beneficial effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (8)
1. a kind of method to set up of terminal time, it is characterised in that include：
Network time is obtained from least two servers；
The goal setting time is generated according at least two accessed network times；
Terminal time is configured based on the goal setting time；
Wherein, included according to the accessed generation goal setting time at least two network times：
Each accessed network time is weighted and obtains the goal setting time, wherein, the weighting of each network time
Coefficient is the degree of belief to each server obtained based on local historical statistical data, the weight coefficient of all-network time it
With for 1；Or,
According to formula CurrTimei=NetTimei+ΔTi, it is determined that each corresponding with each accessed network time is worked as
Front time, wherein CurrTimeiFor i-th current time, NetTimeiFor i-th accessed network time, Δ TiIt is to work as
Front terminal time and get i-th network time the terminal acquisition time between time interval, i is 1 to the net for getting
The natural number of network time number；
To determined by, at least two current times are screened, when the current time obtained according to screening generates goal setting
Between.
2. the method to set up of terminal time according to claim 1, it is characterised in that it is determined that with accessed each
Before network time corresponding each current time, also include：
Detection gets the terminal of i-th network time and obtains the time interval Δ between time and terminal system starting time
T1i；
Detect the time interval Δ T2 between the present terminal time and terminal system starting timei；
According to formula Δ Ti=Δ T2i-ΔT1i, calculate the present terminal time and the terminal for getting i-th network time
Time interval Δ T between the acquisition timei。
3. the method to set up of terminal time according to claim 1, it is characterised in that at least two is current to determined by
Time is screened, and generates the goal setting time according to the current time that screening is obtained, including：
Difference determined by calculating between each current time, according to determined by the fault-tolerant duration pair of the difference and setting
Current time is screened；
The meansigma methodss of each current time that screening is obtained are used as the goal setting time.
4. the method to set up of the terminal time according to any one of claim 1-3, it is characterised in that based on the target
The setting time was configured to terminal time, including：
Calculate the current time generation goal setting for performing that the current time to determined by is screened and obtained according to screening
The duration spent by time；
The goal setting time is added the new goal setting time that obtains with calculated duration, is arranged terminal time and is
The new goal setting time.
5. the setting device of a kind of terminal time, it is characterised in that include：
Network time acquiring unit, for obtaining network time from least two servers；
Goal setting time signal generating unit, for generating the goal setting time according at least two accessed network times；
Terminal time setting unit, for being configured to terminal time based on the goal setting time；
Wherein, the goal setting time signal generating unit includes：
The goal setting time generates subelement, when obtaining goal setting for being weighted to each accessed network time
Between, wherein, the weight coefficient of each network time is the trust to each server obtained based on local historical statistical data
Degree, the weight coefficient sum of all-network time is 1；Or,
Current time determination subelement, for according to formula CurrTimei=NetTimei+ΔTi, it is determined that each with accessed
Corresponding each current time of individual network time, wherein CurrTimeiFor i-th current time, NetTimeiFor accessed
I-th network time, Δ TiFor the time between present terminal time and the terminal acquisition time for getting i-th network time
Interval, i is 1 to the network time number for getting natural number；
Current time processes subelement, screens at least two current times to determined by, is obtained according to screening
Current time generates the goal setting time.
6. the setting device of terminal time according to claim 5, it is characterised in that the goal setting time generates single
Unit also includes time interval computation subunit, for determining and each accessed net in the current time determination subelement
Before network time corresponding each current time：
Detection gets the terminal of i-th network time and obtains the time interval Δ between time and terminal system starting time
T1i；
Detect the time interval Δ T2 between the present terminal time and terminal system starting timei；
According to formula Δ Ti=Δ T2i-ΔT1i, calculate the present terminal time and the terminal for getting i-th network time
Time interval Δ T between the acquisition timei。
7. the setting device of terminal time according to claim 5, it is characterised in that it is single that the current time processes son
Unit, specifically for：
Difference determined by calculating between each current time, according to determined by the fault-tolerant duration pair of the difference and setting
Current time is screened；
The meansigma methodss of each current time that screening is obtained are used as the goal setting time.
8. the setting device of the terminal time according to any one of claim 5-7, it is characterised in that the terminal time
Setting unit, specifically for：
Calculate the current time generation goal setting for performing that the current time to determined by is screened and obtained according to screening
The duration spent by time；
The goal setting time is added the new goal setting time that obtains with calculated duration, is arranged terminal time and is
The new goal setting time.
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| CN108964822B (en) * | 2018-06-29 | 2020-09-01 | 重庆趣玩科技有限公司 | Method and system for acquiring network time in parallel by multiple schemes |
| CN109560889A (en) * | 2018-11-09 | 2019-04-02 | 福建福诺移动通信技术有限公司 | A method of realizing App and server-side time synchronization |
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| CN101068133A (en) * | 2007-06-12 | 2007-11-07 | 华为技术有限公司 | Time synchronizing method, network communication system and equipment and time server thereof |
| CN101442799A (en) * | 2008-12-17 | 2009-05-27 | 广州市新邮通信设备有限公司 | Method, system and apparatus for implementing synchronization of terminal with network side system time |
| CN101546169A (en) * | 2009-04-15 | 2009-09-30 | 北京航空航天大学 | Method and device for calibrating time |
| CN102045638A (en) * | 2009-10-09 | 2011-05-04 | 中国移动通信集团公司 | Method and equipment for time synchronization |
| CN103051438A (en) * | 2011-10-11 | 2013-04-17 | 康佳集团股份有限公司 | Time synchronization method and time synchronization device |
| CN102497665A (en) * | 2011-12-28 | 2012-06-13 | 深圳市五巨科技有限公司 | Mobile terminal time correction method and apparatus thereof |
| CN103428844A (en) * | 2012-05-17 | 2013-12-04 | 上海闻泰电子科技有限公司 | Method for achieving mobile phone time synchronization of mobile phone terminal |
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