CN105242989A - Method and device for ensuring fingerprint data stability - Google Patents
Method and device for ensuring fingerprint data stability Download PDFInfo
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- CN105242989A CN105242989A CN201510680013.2A CN201510680013A CN105242989A CN 105242989 A CN105242989 A CN 105242989A CN 201510680013 A CN201510680013 A CN 201510680013A CN 105242989 A CN105242989 A CN 105242989A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
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Abstract
The invention discloses a method and a device for ensuring fingerprint data stability. The method comprises the following steps of: pre-storing two groups of fingerprint data used for executing the same function, wherein one group of fingerprint data is used as main fingerprint data, and the other group of fingerprint data is used as backup fingerprint data; receiving a fingerprint data execution instruction, and loading the main fingerprint data; and if the main fingerprint data loading fails, loading the backup fingerprint data. By using the technical scheme provided by the embodiment, the influence of the fingerprint data loading failure on the use by a user in the fingerprint data loading process can be avoided; the fingerprint data fault tolerance is improved; and the fingerprint use stability is further improved.
Description
Technical field
The present invention relates to fingerprint input technology field, particularly relate to and a kind ofly ensure the method that finger print data is stable and device.
Background technology
Fingerprint technique has been widely used in mobile terminal, because the finger print data typing of user is simple to operate, and finger print data have obvious human body biological characteristics be easy to identify, be usually used to the aspects such as mobile terminal unblock, function unlatching, data encryption and decryption.
Typing finger print data processes in a secure environment, again by cryptographic storage in the file system of mobile terminal, and be subject to many factors impact in the write of the file system of mobile terminal and reading process, such as embedded memory standard specification (EmbeddedMultiMediaCard, eMMC) performance, exceptions etc. in file read-write process, cause finger print data storing process and read process exception.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of and ensures the method that finger print data is stable and device, to solve the technical matters of fingerprint Data import exception in prior art.
First aspect, embodiments provides a kind of method that finger print data is stable that ensures, comprising:
Prestore two groups for performing the finger print data of same function, wherein one group of finger print data is as main finger print data, and another group finger print data is as backup finger print data;
Receive finger print data and perform instruction, load described main finger print data;
If described main finger print data loads unsuccessfully, load described backup finger print data.
Second aspect, the embodiment of the present invention additionally provides a kind of device that finger print data is stable that ensures, comprising:
Memory module, for prestoring two groups for performing the finger print data of same function, wherein one group of finger print data is as main finger print data, and another group finger print data is as backup finger print data;
Main finger print data load-on module, performing instruction for receiving finger print data, loading described main finger print data;
Backup finger print data load-on module, if load unsuccessfully for described main finger print data, loads described backup finger print data.
The method and apparatus that the guarantee finger print data that the embodiment of the present invention provides is stable, by main finger print data being backed up for backup finger print data, namely prestoring two parts for performing the finger print data of same function, when main finger print data loads unsuccessfully, loading backup finger print data.By the method and apparatus adopting above-mentioned guarantee finger print data stable, can avoid in finger print data loading procedure, affect user because finger print data loads unsuccessfully and use, improve the fault-tolerance of finger print data, and then improve the stability of fingerprint use.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
The process flow diagram of a kind of method protecting finger print data stable that Fig. 1 provides for the embodiment of the present invention one;
A kind of process flow diagram ensureing the method that finger print data is stable that Fig. 2 provides for the embodiment of the present invention two;
A kind of schematic diagram ensureing the device that finger print data is stable that Fig. 3 provides for the embodiment of the present invention three.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Embodiment one
The process flow diagram of a kind of method protecting finger print data stable that Fig. 1 provides for the embodiment of the present invention one.The method of the present embodiment can be performed by the device that terminal protection finger print data is stable, and this device can be realized by software and/or hardware, is integrated in and can loads in the terminal of finger print data.As shown in Figure 1, the method comprises:
Step 101, prestore two groups for performing the finger print data of same function, wherein one group of finger print data is as main finger print data, and another group finger print data is as backup finger print data.
In the present embodiment, main finger print data is the user fingerprints data for performing a certain function of terminal collection, the quantity of finger print data at least one.Backup finger print data is the data obtained by backing up main finger print data.A certain function can be unlock screen, payment or unlatching application etc., and the present embodiment does not limit.Terminal can be the terminal with fingerprint function such as mobile phone, panel computer or MP4.
Exemplary, prestore two groups for performing the finger print data of same function, specific implementation process is as follows: gather the first finger print data, confirms that described first finger print data can be loaded and normally use.After terminal gathers the first finger print data, feature extraction is carried out to the first finger print data and encryption generation encrypt file, can not use for preventing the first finger print data gathered, needed be decrypted encrypt file and load before use first finger print data, judge whether described first finger print data can normally use by loading result, can load at described first finger print data of confirmation and after normal use, described first finger print data can be saved as main finger print data and described main finger print data is backed up as backup finger print data.Being saved as by first finger print data in main finger print data can be replace any one finger print data in main finger print data, can also replace finger print data that in main finger print data, frequency of utilization is low or be stored to main finger print data.If described first finger print data loads unsuccessfully, then delete whole finger print data, and point out user typing fingerprint again, and the fingerprint of typing is again loaded and judges.After main finger print data upgrades, be backup finger print data by described main fingerprint number backup.
Step 102, reception finger print data perform instruction, load described main finger print data.
Exemplary, when receiving finger print data instruction, load finger print data.The finger print data loaded can be load arbitrary data in main finger print data, loading backup finger print data or the main finger print data of random loading and backup finger print data, preferably loads main finger print data.
If the described main finger print data of step 103 loads unsuccessfully, load described backup finger print data.
Exemplary, when one group of finger print data loads unsuccessfully, another group finger print data can be loaded and perform corresponding function, preferably load main finger print data, if when main finger print data loads unsuccessfully, load described backup finger print data.
What the embodiment of the present invention one provided a kind ofly ensures the method that finger print data is stable, by the two groups of finger print datas that prestore, wherein one group of finger print data is main finger print data, another group finger print data is the backup finger print data that the main finger print data of backup generates, and when receiving finger print data load instructions, loads described main finger print data, if described main finger print data loads unsuccessfully, load described backup finger print data, finger print data can be avoided to load unsuccessfully affects user's use, improves the stability of finger print data.
Embodiment two
A kind of process flow diagram ensureing the method that finger print data is stable that Fig. 2 provides for the embodiment of the present invention two.The present embodiment is on the basis of above-described embodiment, adds the step that main finger print data upgrades, is specially:
Step 201, gather the first finger print data, confirm that described first finger print data can be loaded and normally use.
Step 202, described first finger print data saved as main finger print data and be backup finger print data by described main finger print data backup.
Step 203, calculate the cryptographic hash of described first finger print data, and the cryptographic hash of described first finger print data is preserved in association.
Exemplary, by described main finger print data backup for after backup finger print data, calculate the cryptographic hash of the first finger print data, and preserve cryptographic hash, when preserving cryptographic hash, cryptographic hash can be preserved separately in terminal, also can associate preservation cryptographic hash, associate preservation by cryptographic hash with the first finger print data.Be preferably association and preserve cryptographic hash.Adopting in this way, all there is corresponding cryptographic hash in the often group finger print data in terminal.
Step 204, reception finger print data update instruction, calculate the true cryptographic hash of described main finger print data and compare with the cryptographic hash of preserving.
Exemplary, receive finger print data update instruction, the arbitrary group of finger print data of specifying in terminal can be updated stored in, preferably upgrade main finger print data.After receiving fingerprint update instruction, calculate and specify the true cryptographic hash of the finger print data upgraded and compare with cryptographic hash when verifying loading before, preferably calculate the true cryptographic hash of described main finger print data and compare with the cryptographic hash of preserving, if comparative result is identical, perform step 205, if comparative result is different, then perform step 206.
If the described true cryptographic hash of step 205 is identical with the cryptographic hash of preservation, gather the second finger print data, and described second finger print data is updated to described main finger print data, and be backup finger print data by the described main finger print data backup after upgrading.
Exemplary, if described true cryptographic hash is identical with the cryptographic hash of preservation, represent that finger print data to be updated does not change, now can gather the second finger print data, second finger print data can be and finger print data not identical in finger print data to be updated, and described second finger print data is updated to finger print data to be updated.Second finger print data being updated to finger print data to be updated can be replace arbitrary fingerprint in finger print data to be updated, also can replace finger print data that in finger print data to be updated, frequency of utilization is low or be stored as in finger print data to be updated.After second finger print data is updated to finger print data to be updated, be backup finger print data by described finger print data to be updated backup.When gathering the second finger print data, can load the second finger print data, judge whether described second finger print data can normally use by loading result, after described second finger print data of confirmation can load and normally use, described second finger print data is updated to finger print data to be updated, and be backup finger print data by the finger print data backup after upgrading, calculate the cryptographic hash of the second finger print data, preserve the cryptographic hash of the second fingerprint.Be preferably, gather the second finger print data, confirm that described second finger print data can be loaded and normally use, described second finger print data is updated to main finger print data, and be backup finger print data by the described main finger print data backup after upgrading, calculate the cryptographic hash of described second finger print data, described second finger print data is preserved in association.If the finger print data gathered can not load, then delete finger print data, prompting user typing again.Finger print data after each renewal, can back up as backup finger print data, can be alternative original backup finger print data, or form new backup finger print data.Preferably form new backup finger print data, after so each renewal, all can back up new backup finger print data, make in terminal, at least to there are two groups of finger print datas.
If the described true cryptographic hash of step 206 is different from the cryptographic hash of preservation, judge that can described main finger print data be loaded.
Exemplary, if described true cryptographic hash is different with the cryptographic hash of preservation, represent that finger print data to be updated there occurs change, need to judge that can described finger print data to be updated be loaded, being preferably data to be updated is main finger print data, judges that can main finger print data be loaded, if can be loaded, performs step 207, if can not be loaded, then perform step 209.
If the described main finger print data of step 207 can be loaded, described true cryptographic hash being replaced the cryptographic hash of corresponding preservation, is backup finger print data by described main finger print data backup.
Exemplary, if finger print data to be updated can be loaded, then show that finger print data can use, the true cryptographic hash of the finger print data to be updated step 204 calculated replaces the cryptographic hash of corresponding preservation, is backup finger print data by finger print data to be updated backup.Be preferably, finger print data to be updated is main finger print data, if described main finger print data can be loaded, described true cryptographic hash is replaced the cryptographic hash of corresponding preservation, is backup finger print data by described main finger print data backup.Backup finger print data can substitute original finger print data, also can form new backup finger print data.
Step 208, gather the second finger print data, described second finger print data is updated to described main finger print data, and be backup finger print data by the described main finger print data backup after upgrading.
Exemplary, when gathering the second finger print data, can load the second finger print data, judge whether described second finger print data can normally use by loading result, after described second finger print data of confirmation can load and normally use, described second finger print data is updated to finger print data to be updated, and is backup finger print data by the finger print data backup after upgrading.Be preferably collection second finger print data, confirm that described second finger print data can be loaded and normally use, described second finger print data is updated to main finger print data, and be backup finger print data by the described main finger print data backup after upgrading.If the finger print data gathered can not load, then delete finger print data, prompting user typing again.
If the described main finger print data of step 209 can not be loaded, then delete whole finger print data and point out user typing fingerprint again.
Exemplary, if finger print data to be updated can not be loaded, show that finger print data can not use, then delete whole finger print data, and point out user typing fingerprint again.If be preferably described main finger print data can not be loaded, then delete whole finger print data and point out user typing fingerprint again.The mode of prompting user can for jumping out prompting frame prompting user typing fingerprint again on a terminal screen.
Step 210, reception finger print data perform instruction, load described main finger print data.
If the described main finger print data of step 211 loads unsuccessfully, load described backup finger print data.
Exemplary, there are at least two group finger print datas in terminal, when loading unsuccessfully for one group, second group of finger print data can be loaded, if more than two groups of finger print datas, then when second group of finger print data loads unsuccessfully, still can load remaining finger print data.
What the embodiment of the present invention two provided a kind ofly ensures the method that finger print data is stable, during by verifying that main finger print data can successfully load and use, calculate the cryptographic hash of main finger print data and preserve, when receiving finger print data update instruction, the cryptographic hash of the cryptographic hash and preservation that calculate main finger print data compares, if identical, upgrade main finger print data, and the main finger print data after backup updating.Can back up main finger print data after each renewal is complete, if when main finger print data loads unsuccessfully, one group of backup finger print data can be loaded, if when one group of backup finger print data loads unsuccessfully, another group backup finger print data can be loaded.User can be ensured so normally only with finger print data, the stability of finger print data is provided.
Embodiment three
A kind of schematic diagram ensureing the device that finger print data is stable that Fig. 3 provides for the embodiment of the present invention three.As shown in Figure 3, this device comprises: memory module 310, main finger print data load-on module 320 and backup finger print data load-on module 330.
Wherein, memory module 310, for prestoring two groups for performing the finger print data of same function, wherein one group of finger print data is as main finger print data, and another group finger print data is as backup finger print data; Main finger print data load-on module 320, performing instruction for receiving finger print data, loading described main finger print data; Backup finger print data load-on module 330, if load unsuccessfully for described main finger print data, loads described backup finger print data.
Further, memory module 310 comprises: the first fingerprint collecting unit and the first fingerprint backup units.Wherein, the first fingerprint collecting unit, for gathering the first finger print data, confirms that described first finger print data can be loaded and normally use; First fingerprint backup units, for saving as main finger print data by described first finger print data and backing up described main finger print data for backup finger print data.
Preferably, the device that guarantee finger print data is stable can also comprise: the first fingerprint cryptographic hash module, for calculating the cryptographic hash of described first finger print data, and the cryptographic hash of described first finger print data is preserved in association.
On the basis of above-described embodiment, the stable device of finger print data is protected to comprise: update instruction receiver module, the second finger print acquisition module, main finger print data load-on module, main fingerprint backup module, the second fingerprint backup module and removing module.
Wherein, update instruction receiver module, for receiving finger print data update instruction, calculating the true cryptographic hash of described main finger print data and correspondingly comparing with the cryptographic hash of preserving; Second finger print acquisition module, if identical with the cryptographic hash of preservation for described true cryptographic hash, gather the second finger print data, and described second finger print data is updated to described main finger print data, and be backup finger print data by the described main finger print data backup after upgrading; Main finger print data load-on module, if different from the cryptographic hash of preservation for described true cryptographic hash, judges that can described main finger print data be loaded; Main fingerprint backup module, if can be loaded for described main finger print data, replaces the cryptographic hash of corresponding preservation by described true cryptographic hash, be backup finger print data by described main finger print data backup; Second fingerprint backup module, for gathering the second finger print data, is updated to described main finger print data by described second finger print data, and is backup finger print data by the described main finger print data backup after upgrading; Removing module, if can not be loaded for described main finger print data, then deletes whole finger print data and points out user typing fingerprint again.
Preferably, described second finger print acquisition module specifically may be used for: gather the second finger print data, and described second finger print data is stored as described main finger print data, or described second finger print data is replaced the finger print data of arbitrary correspondence in described main finger print data.
Further, described second finger print acquisition module comprises: the second fingerprint loading unit, updating block and the second fingerprint cryptographic hash computing unit.Wherein, the second fingerprint loading unit, for gathering the second finger print data, confirms that described second finger print data can be loaded and normally use; Described main finger print data backup after upgrading for described second finger print data is updated to main finger print data, and is backup finger print data by updating block; Second fingerprint cryptographic hash computing unit, for calculating the cryptographic hash of described second finger print data, the cryptographic hash of described second finger print data is preserved in association.
What the embodiment of the present invention three provided a kind ofly ensures the device that finger print data is stable, by main finger print data backup for backing up finger print data, namely prestoring two parts for performing the finger print data of same function, when main finger print data loads unsuccessfully, backup finger print data can be loaded.Adopt said apparatus, can avoid, in finger print data loading procedure, affecting the use of user owing to loading failure, improve the fault-tolerance of finger print data, and then improve the stability of fingerprint use.
The stable device of the guarantee finger print data that the embodiment of the present invention provides, for the stable method of the guarantee finger print data that performs the embodiment of the present invention and provide, possesses corresponding function and beneficial effect
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 (12)
1. ensure to it is characterized in that the method that finger print data is stable, comprising:
Prestore two groups for performing the finger print data of same function, wherein one group of finger print data is as main finger print data, and another group finger print data is as backup finger print data;
Receive finger print data and perform instruction, load described main finger print data;
If described main finger print data loads unsuccessfully, load described backup finger print data.
2. method according to claim 1, is characterized in that, described in prestore two groups for performing the finger print data of same function, comprising:
Gather the first finger print data, confirm that described first finger print data can be loaded and normally use;
Described first finger print data is saved as main finger print data and described main finger print data is backed up as backup finger print data.
3. method according to claim 2, is characterized in that, describedly described first finger print data is saved as main finger print data and by described main finger print data backup for after backup finger print data, also comprises:
Calculate the cryptographic hash of described first finger print data, and the cryptographic hash of described first finger print data is preserved in association.
4. method according to claim 3, is characterized in that, also comprises:
Receive finger print data update instruction, calculate the true cryptographic hash of described main finger print data and correspondingly with the cryptographic hash of preserving to compare;
If described true cryptographic hash is identical with the cryptographic hash of preservation, gather the second finger print data, and described second finger print data is updated to described main finger print data, and be backup finger print data by the described main finger print data backup after upgrading;
If described true cryptographic hash is different from the cryptographic hash of preservation, judge that can described main finger print data be loaded;
If described main finger print data can be loaded, described true cryptographic hash being replaced the cryptographic hash of corresponding preservation, is backup finger print data by described main finger print data backup;
Gather the second finger print data, described second finger print data is updated to described main finger print data, and be backup finger print data by the described main finger print data backup after upgrading;
If described main finger print data can not be loaded, then delete whole finger print data and point out user typing fingerprint again.
5. method according to claim 4, is characterized in that, described collection second finger print data, and described second finger print data is updated to main finger print data, specifically comprises:
Gather the second finger print data, and described second finger print data is stored as described main finger print data, or described second finger print data is replaced the finger print data of arbitrary correspondence in described main finger print data.
6. method according to claim 4, is characterized in that, described collection second finger print data, and described second finger print data is updated to main finger print data, and the described main finger print data backup after upgrading is comprised for backing up finger print data:
Gather the second finger print data, confirm that described second finger print data can be loaded and normally use;
Described second finger print data is updated to main finger print data, and is backup finger print data by the described main finger print data backup after upgrading;
Calculate the cryptographic hash of described second finger print data, the cryptographic hash of described second finger print data is preserved in association.
7. ensure to it is characterized in that the device that finger print data is stable, comprising:
Memory module, for prestoring two groups for performing the finger print data of same function, wherein one group of finger print data is as main finger print data, and another group finger print data is as backup finger print data;
Main finger print data load-on module, performing instruction for receiving finger print data, loading described main finger print data;
Backup finger print data load-on module, if load unsuccessfully for described main finger print data, loads described backup finger print data.
8. device according to claim 7, is characterized in that, described memory module, comprising:
First fingerprint collecting unit, for gathering the first finger print data, confirms that described first finger print data can be loaded and normally use;
First fingerprint backup units, for saving as main finger print data by described first finger print data and backing up described main finger print data for backup finger print data.
9. device according to claim 8, is characterized in that, also comprises:
First fingerprint cryptographic hash module, for calculating the cryptographic hash of described first finger print data, and the cryptographic hash of described first finger print data is preserved in association.
10. device according to claim 9, is characterized in that, also comprises:
Update instruction receiver module, for receiving finger print data update instruction, calculating the true cryptographic hash of described main finger print data and correspondingly comparing with the cryptographic hash of preserving;
Second finger print acquisition module, if identical with the cryptographic hash of preservation for described true cryptographic hash, gather the second finger print data, and described second finger print data is updated to described main finger print data, and be backup finger print data by the described main finger print data backup after upgrading;
Main finger print data load-on module, if different from the cryptographic hash of preservation for described true cryptographic hash, judges that can described main finger print data be loaded;
Main fingerprint backup module, if can be loaded for described main finger print data, replaces the cryptographic hash of corresponding preservation by described true cryptographic hash, be backup finger print data by described main finger print data backup;
Second fingerprint backup module, for gathering the second finger print data, is updated to described main finger print data by described second finger print data, and is backup finger print data by the described main finger print data backup after upgrading;
Removing module, if can not be loaded for described main finger print data, then deletes whole finger print data and points out user typing fingerprint again.
11. devices according to claim 10, is characterized in that, described second finger print acquisition module specifically for:
Gather the second finger print data, described second finger print data is stored as described main finger print data, or described second finger print data is replaced the finger print data of arbitrary correspondence in described main finger print data.
12. devices according to claim 10, is characterized in that, described second finger print acquisition module comprises:
Second fingerprint loading unit, for gathering the second finger print data, confirms that described second finger print data can be loaded and normally use;
Described main finger print data backup after upgrading for described second finger print data is updated to main finger print data, and is backup finger print data by updating block;
Second fingerprint cryptographic hash computing unit, for calculating the cryptographic hash of described second finger print data, the cryptographic hash of described second finger print data is preserved in association.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510680013.2A CN105242989B (en) | 2015-10-19 | 2015-10-19 | A kind of method and device for ensureing finger print data and stablizing |
| CN201810530569.7A CN108710549B (en) | 2015-10-19 | 2015-10-19 | Method and device for ensuring stability of fingerprint data |
| PCT/CN2016/093751 WO2017067292A1 (en) | 2015-10-19 | 2016-08-05 | Method, apparatus, and terminal for ensuring stability of fingerprint data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510680013.2A CN105242989B (en) | 2015-10-19 | 2015-10-19 | A kind of method and device for ensureing finger print data and stablizing |
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| CN201810530569.7A Division CN108710549B (en) | 2015-10-19 | 2015-10-19 | Method and device for ensuring stability of fingerprint data |
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| CN105242989A true CN105242989A (en) | 2016-01-13 |
| CN105242989B CN105242989B (en) | 2018-07-13 |
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| CN201810530569.7A Active CN108710549B (en) | 2015-10-19 | 2015-10-19 | Method and device for ensuring stability of fingerprint data |
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| WO2017067292A1 (en) * | 2015-10-19 | 2017-04-27 | 广东欧珀移动通信有限公司 | Method, apparatus, and terminal for ensuring stability of fingerprint data |
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| CN104645375A (en) * | 2013-11-25 | 2015-05-27 | 北京白象新技术有限公司 | Air disinfector with fingerprint identification function |
| CN103853965A (en) * | 2014-03-11 | 2014-06-11 | 广州杰赛科技股份有限公司 | Fingerprint certification-based entertainment system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017067292A1 (en) * | 2015-10-19 | 2017-04-27 | 广东欧珀移动通信有限公司 | Method, apparatus, and terminal for ensuring stability of fingerprint data |
| CN105530101A (en) * | 2016-02-29 | 2016-04-27 | 宇龙计算机通信科技(深圳)有限公司 | Fingerprint authentication method and device |
| CN105530101B (en) * | 2016-02-29 | 2019-06-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of fingerprint method for authenticating and device |
| CN107239771A (en) * | 2017-06-21 | 2017-10-10 | 北京小米移动软件有限公司 | Fingerprint calibration method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017067292A1 (en) | 2017-04-27 |
| CN108710549A (en) | 2018-10-26 |
| CN108710549B (en) | 2020-09-01 |
| CN105242989B (en) | 2018-07-13 |
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