CN107609540B - Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal - Google Patents
Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal Download PDFInfo
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- CN107609540B CN107609540B CN201710958400.7A CN201710958400A CN107609540B CN 107609540 B CN107609540 B CN 107609540B CN 201710958400 A CN201710958400 A CN 201710958400A CN 107609540 B CN107609540 B CN 107609540B
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 238000001514 detection method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
Abstract
The invention discloses a method and a device for acquiring calibration parameters of a fingerprint sensor and a mobile terminal, wherein the method comprises the following steps: when a calibration parameter acquisition triggering event is detected, judging whether the surface of the fingerprint sensor has liquid or not based on a preset judging method; and determining a corresponding preset calibration parameter value according to a judging result so as to support capturing of fingerprint images according to the preset calibration parameter value. According to the technical scheme provided by the embodiment of the invention, whether the surface of the fingerprint sensor has liquid or not is judged, and the corresponding preset calibration parameter value of the fingerprint sensor is determined according to the judging result so as to carry out fingerprint image capturing, so that the technical problem that the accuracy of the acquired calibration parameter of capturing the fingerprint image is low because the same calibration parameter value is acquired to carry out fingerprint image capturing no matter whether the surface of the fingerprint sensor has liquid or not in the prior art is solved, and the accuracy of acquiring the calibration parameter of the fingerprint sensor and the accuracy of capturing the fingerprint image are improved.
Description
The application is a divisional application, the application number of the original application is 201510680017.0, the application date is 2015, 10 and 19, and the name of the application is 'a method and a device for acquiring calibration parameters of a fingerprint sensor' and a mobile terminal.
Technical Field
The embodiment of the invention relates to the technical field of mobile terminals, in particular to a method and a device for acquiring calibration parameters of a fingerprint sensor and a mobile terminal.
Background
Along with the development of mobile terminal technology and image processing technology, fingerprint identification technology has been applied to a plurality of fields as a high-security identification technology, which not only brings security protection to personal privacy devices, but also brings convenience to users. For example, the mobile terminal or application software or files on the mobile terminal are encrypted or unlocked through fingerprint identification technology, so that good experience is brought to users.
Generally, a fingerprint recognition process of a fingerprint sensor of a mobile terminal mainly includes the following three steps: 1. calibrating the fingerprint sensor and obtaining calibration parameters; 2. grabbing fingerprint images according to the calibration parameters; 3. and matching the captured fingerprint image with a pre-stored fingerprint image. Because, when capturing a fingerprint image of a user through a fingerprint sensor, the user is required to capture fingerprint information of the user by touching the surface of the fingerprint sensor of the mobile terminal with a finger, it is inevitable that the surface of the fingerprint sensor will have a liquid. In the prior art, no matter whether the surface of the fingerprint sensor is liquid or not, after a user touches the fingerprint sensor, the same calibration parameter value is acquired to capture the fingerprint image, so that the accuracy of the captured fingerprint image is low, the fingerprint image is not matched with the pre-stored fingerprint image, and the fingerprint identification rate is reduced.
Disclosure of Invention
The embodiment of the invention provides a method and a device for acquiring calibration parameters of a fingerprint sensor and a mobile terminal, so as to improve the accuracy of acquiring the calibration parameters of the fingerprint sensor.
In a first aspect, an embodiment of the present invention provides a method for acquiring calibration parameters of a fingerprint sensor, including:
when a calibration parameter acquisition triggering event is detected, judging whether the surface of the fingerprint sensor has liquid or not based on a preset judging method;
and determining a corresponding preset calibration parameter value according to a judging result so as to support capturing of fingerprint images according to the preset calibration parameter value.
In a second aspect, an embodiment of the present invention provides an apparatus for acquiring calibration parameters of a fingerprint sensor, including:
the judging module is used for judging whether the surface of the fingerprint sensor has liquid or not based on a preset judging method when the calibration parameter acquisition triggering event is detected;
and the calibration parameter value determining module is used for determining a corresponding preset calibration parameter value according to the judging result so as to support the capture of fingerprint images according to the preset calibration parameter value.
In a third aspect, an embodiment of the present invention further provides a mobile terminal, including the apparatus provided in the second aspect.
According to the method and device for acquiring the calibration parameters of the fingerprint sensor and the mobile terminal, whether the surface of the fingerprint sensor is liquid or not is judged, and the preset calibration parameter value corresponding to the fingerprint sensor is determined according to the judgment result so as to capture the fingerprint image.
Drawings
Fig. 1 is a flowchart of a method for acquiring calibration parameters of a fingerprint sensor according to a first embodiment of the present invention;
fig. 2 is a flowchart of a method for acquiring calibration parameters of a fingerprint sensor according to a second embodiment of the present invention;
fig. 3 is a flowchart of a method for acquiring calibration parameters of a fingerprint sensor according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for acquiring calibration parameters of a fingerprint sensor according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of specific embodiments of the present invention is given with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present invention are shown in the accompanying drawings. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example 1
Fig. 1 is a flowchart of a method for obtaining calibration parameters of a fingerprint sensor according to a first embodiment of the present invention, where the method may be performed by an apparatus for obtaining calibration parameters of a fingerprint sensor. The apparatus may be implemented in software and/or hardware and may be built into the mobile terminal as part of the mobile terminal. As shown in fig. 1, the method for acquiring calibration parameters of a fingerprint sensor provided in this embodiment specifically includes the following steps:
and step 101, judging whether the surface of the fingerprint sensor has liquid or not based on a preset judging method when a calibration parameter acquisition triggering event is detected.
The mobile terminal in this embodiment includes, but is not limited to, a mobile phone, a tablet computer, and a notebook.
The calibration parameter acquiring trigger event may be any event that detects some preset instructions before detecting the operation of the user acting on the fingerprint sensor, for example, when the mobile terminal runs application software, such as a WeChat payment, before the user acts on the fingerprint sensor, as long as a WeChat payment related instruction is detected, a calibration parameter acquiring trigger event may be generated, and the calibration parameter may be acquired before the user acts on the sensor.
Wherein the liquid may be water.
Step 102, determining a corresponding preset calibration parameter value according to a judging result so as to support capturing of fingerprint images according to the preset calibration parameter value.
The determining the corresponding preset parameter according to the determination result may be: when the surface of the fingerprint sensor is free of liquid, determining a corresponding preset calibration parameter value as a first preset calibration parameter value; and when the surface of the fingerprint sensor has liquid, determining the corresponding preset calibration parameter value as a second preset calibration parameter value. The method can also be as follows: and determining the corresponding preset calibration parameter value as the preset calibration parameter value corresponding to the humidity according to the humidity of the fingerprint sensor in the judging result, wherein the humidity can be divided into a plurality of grades, and each humidity grade corresponds to one preset calibration parameter value. The preset calibration parameter values are calibration parameter values preset and stored in the system, and the set values have the following advantages: the problem that in the prior art, the calibration time of the fingerprint sensor is long because the calibration parameters are required to be automatically calibrated and generated before the fingerprint image is captured can be solved.
After the calibration parameter value is determined, if an operation instruction of a user on the fingerprint sensor is detected, capturing the fingerprint image according to the preset calibration parameter value.
According to the method for acquiring the calibration parameters of the fingerprint sensor, provided by the embodiment of the invention, the technical means of acquiring the fingerprint images by determining whether the surface of the fingerprint sensor has liquid or not and determining the corresponding preset calibration parameter value of the fingerprint sensor according to the determination result are provided, so that the technical problems that the accuracy of the acquired calibration parameters for acquiring the fingerprint images is low because the same calibration parameter value is acquired for acquiring the fingerprint images no matter whether the surface of the fingerprint sensor has liquid or not in the prior art are solved, and the accuracy of the acquired calibration parameters of the fingerprint sensor and the accuracy of the acquired fingerprint images are improved.
Example two
Fig. 2 is a flowchart of a method for obtaining calibration parameters of a fingerprint sensor according to a second embodiment of the present invention. The present invention is optimized based on the first embodiment, in this embodiment, the corresponding preset calibration parameter value is determined according to the determination result, so as to support the capturing of the fingerprint image according to the preset calibration parameter value to be specifically optimized: when no liquid exists on the surface of the fingerprint sensor, determining a corresponding preset calibration parameter value as a first preset calibration parameter value so as to support capturing of fingerprint images according to the first preset calibration parameter value; when the surface of the fingerprint sensor has liquid, determining the corresponding preset calibration parameter value as a second preset calibration parameter value so as to support capturing of fingerprint images according to the second preset calibration parameter value.
Accordingly, as shown in fig. 2, the method for acquiring calibration parameters of the fingerprint sensor provided in this embodiment includes the following steps:
step 201, when a calibration parameter acquisition trigger event is detected, determining whether a surface of the fingerprint sensor has liquid or not based on a preset determination method.
Step 202, when there is no liquid on the surface of the fingerprint sensor, determining the corresponding preset calibration parameter value as a first preset calibration parameter value, so as to support capturing of fingerprint images according to the first preset calibration parameter value. The first preset calibration parameter value comprises a first preset gain value and a first preset offset value.
For example, if the input signal of the fingerprint image is x and the fingerprint image data captured according to the calibration parameter is y, there may be a first preset calibration parameter value k, b satisfying the linear equation y=kx+b, where k is a first preset gain value and b is a first preset offset value. The first preset gain value k is used for adjusting the input signal of the fingerprint image to a larger extent, and the first preset offset value b is used for fine-tuning the input signal of the fingerprint image.
And 203, when the surface of the fingerprint sensor has liquid, determining the corresponding preset calibration parameter value as a second preset calibration parameter value so as to support capturing of fingerprint images according to the second preset calibration parameter value. The second preset calibration parameter value comprises a second preset gain value and a second preset offset value, and the first preset gain value is smaller than the second preset gain value. Because, when there is no liquid on the surface of the fingerprint sensor, the capacitance change of the fingerprint sensor is large when the user's finger acts on the fingerprint sensor, the corresponding gain value for capturing the fingerprint image is small, and when there is liquid on the surface of the fingerprint sensor, the capacitance change of the fingerprint sensor is small, and the corresponding gain value for capturing the fingerprint image is large.
In this embodiment, the determination result of whether the surface of the fingerprint sensor has liquid is divided into two cases, i.e., whether the surface of the fingerprint sensor has liquid or not, and each case corresponds to a preset calibration parameter value, because when the surface of the fingerprint sensor has liquid or not, the corresponding two preset calibration parameter values may differ significantly, and when the surface of the fingerprint sensor has liquid, the difference between the corresponding preset calibration parameter values with different humidity levels is not obvious, so that the corresponding preset calibration parameter values are determined according to the determination result of whether the surface of the fingerprint sensor has liquid or not, and the time for determining the calibration parameters can be shortened on the basis of ensuring the accuracy of obtaining the calibration parameters.
According to the method for acquiring the calibration parameters of the fingerprint sensor, provided by the embodiment of the invention, whether the surface of the fingerprint sensor has liquid or not is judged, when the surface of the fingerprint sensor does not have liquid, the corresponding preset calibration parameter value is determined to be the first preset calibration parameter value, and when the surface of the fingerprint sensor has liquid, the corresponding preset calibration parameter value is determined to be the second preset calibration parameter value, so that the capture of the fingerprint image according to the first preset calibration parameter value or the second preset calibration parameter value is supported, the technical problem that the capture of the fingerprint image is carried out by acquiring the same calibration parameter value no matter whether the surface of the fingerprint sensor has liquid or not in the prior art is solved, the accuracy of the acquired calibration parameter for capturing the fingerprint image is low, and the accuracy of the calibration parameter for acquiring the fingerprint sensor and the accuracy of the captured fingerprint image are improved.
Example III
Fig. 3 is a flowchart of a method for obtaining calibration parameters of a fingerprint sensor according to a third embodiment of the present invention. In this embodiment, a corresponding preset calibration parameter value is determined according to a determination result, so as to support the capture of a fingerprint image according to the preset calibration parameter value to be specifically optimized: when no liquid exists on the surface of the fingerprint sensor, determining a corresponding preset calibration parameter value as a first preset calibration parameter value so as to support capturing of fingerprint images according to the first preset calibration parameter value; when liquid exists on the surface of the fingerprint sensor, controlling the fingerprint sensor to heat up so as to remove the liquid on the surface of the fingerprint sensor, and determining the corresponding preset calibration parameter value as a first preset calibration parameter value so as to support capturing of fingerprint images according to the first preset calibration parameter value.
Accordingly, as shown in fig. 3, the method for acquiring calibration parameters of the fingerprint sensor provided in this embodiment includes the following steps:
step 301, when a calibration parameter acquisition trigger event is detected, determining whether a surface of the fingerprint sensor has liquid or not based on a preset determination method.
The method specifically comprises the following steps: when a calibration parameter acquisition triggering event is detected, acquiring a current capacitance value of the fingerprint sensor; calculating the difference value between the current capacitance value and a preset capacitance reference value; and if the difference value is within the preset threshold value, judging that the surface of the fingerprint sensor has liquid, otherwise, judging that the surface of the fingerprint sensor has no liquid.
The preset capacitance reference value is a capacitance value measured when the surface of the fingerprint sensor is free of liquid before leaving the factory, and is stored in a system in advance.
Step 302, when there is no liquid on the surface of the fingerprint sensor, determining the corresponding preset calibration parameter value as a first preset calibration parameter value, so as to support capturing of fingerprint images according to the first preset calibration parameter value.
And 303, when the surface of the fingerprint sensor has liquid, controlling the fingerprint sensor to heat up so as to remove the liquid on the surface of the fingerprint sensor, and determining the corresponding preset calibration parameter value as a first preset calibration parameter value so as to support capturing of fingerprint images according to the first preset calibration parameter value.
Wherein, the controlling the temperature rise of the fingerprint sensor may include: increasing the power of the fingerprint sensor to heat the fingerprint sensor; or controlling the heating device corresponding to the fingerprint sensor to heat the fingerprint sensor so as to heat the fingerprint sensor.
Wherein, the power of the fingerprint sensor can be increased at the same increasing rate, and the power can also be increased at the increasing rate of step change; the controlling the heating device corresponding to the fingerprint sensor to heat the fingerprint sensor may be to heat the fingerprint sensor at the same heating rate, or may be to heat the fingerprint sensor at a heating rate that varies stepwise, which is not limited in this embodiment.
In addition, when the surface of the fingerprint sensor has liquid, a prompt message of the liquid on the surface of the fingerprint sensor can be sent out so as to prompt a user to remove the liquid on the surface of the fingerprint sensor.
According to the method for acquiring the calibration parameters of the fingerprint sensor, whether the surface of the fingerprint sensor has liquid or not is judged through the change of the capacitance of the fingerprint sensor, when the surface of the fingerprint sensor does not have liquid, the corresponding preset calibration parameter value is determined to be the first preset calibration parameter value, when the surface of the fingerprint sensor has liquid, the fingerprint sensor is controlled to heat up so as to remove the liquid on the surface of the fingerprint sensor, the corresponding preset calibration parameter value is determined to be the first preset calibration parameter value, so that the fingerprint image can be acquired according to the first preset calibration parameter value, the technical problem that the same calibration parameter value is acquired immediately to acquire the fingerprint image no matter whether the surface of the fingerprint sensor has liquid or not in the prior art is solved, the accuracy of the acquired calibration parameter of the fingerprint image is low is solved, and the accuracy of the acquired calibration parameter of the fingerprint sensor and the accuracy of the acquired fingerprint image are improved.
Example IV
Fig. 4 is a schematic structural diagram of an apparatus for acquiring calibration parameters of a fingerprint sensor according to a fourth embodiment of the present invention. As shown in fig. 4, the device for acquiring calibration parameters of a fingerprint sensor according to the fourth embodiment of the present invention includes:
a determining module 41, configured to determine whether the surface of the fingerprint sensor has liquid based on a preset determining method when the calibration parameter acquisition triggering event is detected;
the calibration parameter value determining module 42 is configured to determine a corresponding preset calibration parameter value according to the determination result, so as to support capturing of the fingerprint image according to the preset calibration parameter value.
Preferably, the calibration parameter value determining module 42 is specifically configured to:
when no liquid exists on the surface of the fingerprint sensor, determining a corresponding preset calibration parameter value as a first preset calibration parameter value so as to support capturing of fingerprint images according to the first preset calibration parameter value;
when the surface of the fingerprint sensor has liquid, determining the corresponding preset calibration parameter value as a second preset calibration parameter value so as to support capturing of fingerprint images according to the second preset calibration parameter value.
Preferably, the calibration parameter value determining module 42 includes:
the first calibration parameter value determining unit is used for determining a corresponding preset calibration parameter value as a first preset calibration parameter value when no liquid exists on the surface of the fingerprint sensor so as to support capturing of fingerprint images according to the first preset calibration parameter value;
the fingerprint sensor heating unit is used for controlling the fingerprint sensor to heat when the surface of the fingerprint sensor has liquid so as to remove the liquid on the surface of the fingerprint sensor;
the second calibration parameter value determining unit is used for determining the corresponding preset calibration parameter value as a first preset calibration parameter value so as to support capturing of fingerprint images according to the first preset calibration parameter value.
Preferably, the first preset calibration parameter value includes a first preset gain value and a first preset offset value, the second preset calibration parameter value includes a second preset gain value and a second preset offset value, and the first preset gain value is smaller than the second preset gain value.
Preferably, the determining module 41 is specifically configured to:
when a calibration parameter acquisition triggering event is detected, acquiring a current capacitance value of the fingerprint sensor;
calculating the difference value between the current capacitance value and a preset capacitance reference value;
and if the difference value is within the preset threshold value, judging that the surface of the fingerprint sensor has liquid, otherwise, judging that the surface of the fingerprint sensor has no liquid.
Preferably, the fingerprint sensor temperature increasing unit is specifically configured to:
when the surface of the fingerprint sensor has liquid, increasing the power of the fingerprint sensor so as to heat the fingerprint sensor; or when the surface of the fingerprint sensor has liquid, controlling a heating device corresponding to the fingerprint sensor to heat the fingerprint sensor so as to heat the fingerprint sensor.
The device for acquiring the calibration parameters of the fingerprint sensor provided by the embodiment of the invention can execute the method for acquiring the calibration parameters of the fingerprint sensor provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
In addition, the embodiment of the invention also provides a mobile terminal, which comprises the device provided by the fourth embodiment of the invention, can execute the methods provided by the first to third embodiments of the invention, and has the corresponding functional modules and beneficial effects of the execution methods.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (5)
1. A method for obtaining calibration parameters of a fingerprint sensor, comprising:
when a calibration parameter acquisition triggering event is detected, judging whether the surface of the fingerprint sensor has liquid or not based on a preset judging method; the calibration parameter acquisition triggering event is any event of detecting a preset instruction before detecting the operation of a user acting on the fingerprint sensor;
when no liquid exists on the surface of the fingerprint sensor, determining a corresponding preset calibration parameter value as a first preset calibration parameter value, so as to grasp fingerprint images according to the first preset calibration parameter value; the preset calibration parameter value is a calibration parameter value corresponding to the humidity of the surface of the fingerprint sensor; the humidity is divided into a plurality of levels, and each humidity level corresponds to a preset calibration parameter value;
when liquid exists on the surface of the fingerprint sensor, determining the corresponding preset calibration parameter value as a second preset calibration parameter value, so as to grasp fingerprint images according to the second preset calibration parameter value;
the first preset calibration parameter value comprises a first preset gain value and a first preset offset value, the second preset calibration parameter value comprises a second preset gain value and a second preset offset value, and the first preset gain value is smaller than the second preset gain value.
2. The method of claim 1, wherein determining whether the fingerprint sensor surface is liquid based on a preset determination method upon detection of a calibration parameter acquisition trigger event comprises:
when a calibration parameter acquisition triggering event is detected, acquiring a current capacitance value of the fingerprint sensor;
calculating the difference value between the current capacitance value and a preset capacitance reference value;
and if the difference value is within the preset threshold value, judging that the surface of the fingerprint sensor has liquid, otherwise, judging that the surface of the fingerprint sensor has no liquid.
3. An acquisition device of calibration parameters of a fingerprint sensor, comprising:
the judging module is used for judging whether the surface of the fingerprint sensor has liquid or not based on a preset judging method when the calibration parameter acquisition triggering event is detected; the calibration parameter acquisition triggering event is any event of detecting a preset instruction before detecting the operation of a user acting on the fingerprint sensor;
the calibration parameter value determining module is used for determining a corresponding preset calibration parameter value as a first preset calibration parameter value when no liquid exists on the surface of the fingerprint sensor so as to support capturing of fingerprint images according to the first preset calibration parameter value; when liquid exists on the surface of the fingerprint sensor, determining a corresponding preset calibration parameter value as a second preset calibration parameter value so as to support capturing of fingerprint images according to the second preset calibration parameter value; the preset calibration parameter value is a calibration parameter value corresponding to the humidity of the surface of the fingerprint sensor; the humidity is divided into a plurality of levels, and each humidity level corresponds to a preset calibration parameter value;
the first preset calibration parameter value comprises a first preset gain value and a first preset offset value, the second preset calibration parameter value comprises a second preset gain value and a second preset offset value, and the first preset gain value is smaller than the second preset gain value.
4. The apparatus of claim 3, wherein the determination module is specifically configured to:
when a calibration parameter acquisition triggering event is detected, acquiring a current capacitance value of the fingerprint sensor;
calculating the difference value between the current capacitance value and a preset capacitance reference value;
and if the difference value is within the preset threshold value, judging that the surface of the fingerprint sensor has liquid, otherwise, judging that the surface of the fingerprint sensor has no liquid.
5. A mobile terminal comprising the apparatus of any of claims 3-4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710958400.7A CN107609540B (en) | 2015-10-19 | 2015-10-19 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
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| CN201510680017.0A CN105303172B (en) | 2015-10-19 | 2015-10-19 | A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor |
| CN201710958400.7A CN107609540B (en) | 2015-10-19 | 2015-10-19 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
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| CN201510680017.0A Division CN105303172B (en) | 2015-10-19 | 2015-10-19 | A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor |
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| CN201710958400.7A Active CN107609540B (en) | 2015-10-19 | 2015-10-19 | Method and device for acquiring calibration parameters of fingerprint sensor and mobile terminal |
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| CN105335707B (en) * | 2015-10-19 | 2018-05-08 | 广东欧珀移动通信有限公司 | A kind of acquisition methods, device and the mobile terminal of fingerprint image to be identified |
| CN105303172B (en) * | 2015-10-19 | 2017-11-21 | 广东欧珀移动通信有限公司 | A kind of acquisition methods, device and the mobile terminal of the calibration parameter of fingerprint sensor |
| CN105975044B (en) * | 2016-04-25 | 2020-03-31 | Oppo广东移动通信有限公司 | Method and device for automatically controlling touch screen wet hand mode through fingerprint detection |
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| CN105930809B (en) * | 2016-04-26 | 2018-01-19 | 广东欧珀移动通信有限公司 | Method for controlling fingerprint identification, fingerprint recognition control device and electronic installation |
| CN106022067B (en) * | 2016-05-30 | 2018-03-27 | 广东欧珀移动通信有限公司 | One kind solution lock control method and terminal device |
| CN106096372B (en) * | 2016-06-21 | 2018-03-02 | 广东欧珀移动通信有限公司 | A kind of unlocked by fingerprint method and terminal |
| CN107563261A (en) * | 2016-07-01 | 2018-01-09 | 联想移动通信科技有限公司 | A kind of fingerprint identification device and mobile terminal device |
| CN106355144B (en) * | 2016-08-26 | 2019-08-20 | Oppo广东移动通信有限公司 | Acquisition method, device and the mobile terminal of fingerprint image |
| CN108573188B (en) * | 2017-03-07 | 2021-10-08 | 宏碁股份有限公司 | Fingerprint sensing device, electronic device and calibration method of fingerprint sensor |
| WO2019165619A1 (en) * | 2018-03-01 | 2019-09-06 | 深圳市汇顶科技股份有限公司 | Capacitive fingerprint chip, mismatch adjustment method and terminal device |
| CN109492567B (en) * | 2018-10-31 | 2020-11-13 | 上海海栎创微电子有限公司 | Dynamic calibration method for fingerprint sensor |
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| Publication number | Publication date |
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| CN105303172A (en) | 2016-02-03 |
| CN105303172B (en) | 2017-11-21 |
| CN107609540A (en) | 2018-01-19 |
| WO2017067259A1 (en) | 2017-04-27 |
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