CN104978575A - Fingerprint identification system and operation method thereof - Google Patents
Fingerprint identification system and operation method thereof Download PDFInfo
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- CN104978575A CN104978575A CN201510438016.5A CN201510438016A CN104978575A CN 104978575 A CN104978575 A CN 104978575A CN 201510438016 A CN201510438016 A CN 201510438016A CN 104978575 A CN104978575 A CN 104978575A
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- 238000000034 method Methods 0.000 title claims description 26
- 238000003860 storage Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
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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
- G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
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Abstract
The invention discloses a fingerprint identification system, which comprises a fingerprint sensing unit, a pressure sensing unit and a central processing unit, wherein the central processing unit is electrically coupled with the fingerprint sensing unit and the pressure sensing unit, the fingerprint sensing unit is used for outputting a plurality of first fingerprint sensing images, the pressure sensing unit is arranged below the fingerprint sensing unit and is used for outputting a plurality of first sensing pressure values, the central processing unit is used for receiving the first fingerprint sensing images and a plurality of corresponding first sensing pressure values, obtaining a plurality of first pressure brightness parameters corresponding to the first sensing pressure values according to the first pressure brightness parameters, and judging whether the brightness variation of the first pressure brightness parameters is equal to or larger than a brightness threshold value, if so, the central processing unit judges the first fingerprint sensing images to be true.
Description
Technical field
The invention relates to a kind of fingerprint identification system, in particular to a kind of fingerprint identification system and its method of operating that distinguish the fingerprint true and false.
Background technology
Everyone innately has different fingerprints, and therefore fingerprint has high identification, and the fingerprint of true man may be forged hardly again, and therefore fingerprint has become emerging encryption unlocking tool.And although the fingerprint of true man has above-mentioned advantage, but current identification system is still not enough to the true and false of the tested fingerprint of complete identification, still may there is the situation of forging fingerprint successful unlock, therefore how effectively to detect the authenticity of tested fingerprint, be the important topic of current fingerprint identification system.
Summary of the invention
In order to effectively distinguish the fingerprint true and false when identification of fingerprint, the present invention proposes a kind of fingerprint identification system embodiment, and it comprises: a fingerprint sensing unit, is to export multiple first fingerprint sensing image; One pressure sensing cells is arranged at the below of fingerprint sensing unit, in order to export multiple first pressure sensor value; And a CPU (central processing unit), CPU (central processing unit) and fingerprint sensing unit and pressure sensing cells electric property coupling, the multiple first pressure sensor values receiving multiple first fingerprint sensing image and correspondence, and obtain multiple first pressure luminance parameters of corresponding multiple first pressure sensor value according to this, and judge whether a luminance delta of multiple first pressure luminance parameter is equal to or greater than a brightness threshold value, if be judged as YES, central processing unit judges that above-mentioned multiple first fingerprint sensing images are true.
In other embodiments, fingerprint identification system more can comprise a storage element, storage element and CPU (central processing unit) electric property coupling, the multiple second pressure luminance parameters obtained in order to store multiple second fingerprint sensing image that CPU (central processing unit) exports by fingerprint sensing unit and multiple second pressure sensor value that pressure sensing cells correspondence exports.
The present invention more proposes a kind of method of operating embodiment of fingerprint identification system, fingerprint identification system comprises a fingerprint sensing unit, one pressure sensing cells and a CPU (central processing unit), CPU (central processing unit) and fingerprint sensing unit and pressure sensing cells electric property coupling, fingerprint sensing unit is in order to export multiple first fingerprint sensing image, pressure sensing cells is arranged at below fingerprint sensing unit, in order to export multiple first pressure sensor value, the method of operating of fingerprint identification system comprises the following steps: make fingerprint sensing unit export multiple first fingerprint sensing image and make pressure sensing cells correspondence export multiple first pressure sensor value, make CPU (central processing unit) receive multiple first fingerprint sensing image and multiple first pressure sensor value and obtain multiple first pressure luminance parameters of corresponding multiple first pressure sensor value, CPU (central processing unit) is judged, and whether a luminance delta of multiple first pressure luminance parameter is equal to or greater than a brightness threshold value, when being judged as YES, multiple first fingerprint sensing image is true, when being judged as NO, multiple first fingerprint sensing image is false.
In other embodiments, fingerprint identification system more comprises a storage element, with central processing unit electric property coupling.The method of operating of fingerprint identification system more comprises: make fingerprint sensing unit export multiple second fingerprint sensing image and make pressure sensing cells correspondence export multiple second pressure sensor value; The CPU (central processing unit) multiple second fingerprint sensing image of reception and multiple second pressure sensor value is made also to obtain multiple second pressure luminance parameters of corresponding multiple second pressure sensor value according to this; Storage element is made to store these the second pressure sensor values of multiple second pressure luminance parameter and correspondence.
In other embodiments, the method of operating of fingerprint identification system more comprises: brightness threshold value is a luminance delta of multiple second pressure luminance parameter these the second pressure sensor values corresponding, and multiple second pressure sensor value is identical with multiple first pressure sensor value.
Combine the above, fingerprint identification system of the present invention is that the force value that presses fingerprint according to user changes to judge the true and false of fingerprint with the brightness of corresponding fingerprint sensing image, because real fingerprint can cause the sensing image of different Luminance Distribution at various pressures, and the characteristic of this Luminance Distribution be not other forge fingerprints can copy easily, therefore fingerprint identification system of the present invention effectively can distinguish the true and false of fingerprint to be measured, improves the correctness of fingerprint identification system.
For above and other object of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly also coordinates institute's accompanying drawings to be described below in detail.
Accompanying drawing explanation
Fig. 1 is fingerprint identification system embodiment one schematic diagram of the present invention.
Fig. 2 is fingerprint sensing image schematic diagram of the present invention.
Fig. 3 is the relation schematic diagram of pressure sensor value of the present invention and pressure luminance parameter.
Fig. 4 is fingerprint identification system embodiment two schematic diagram of the present invention.
Fig. 5 is the operation workflow schematic diagram of fingerprint identification system embodiment one of the present invention.
Fig. 6 is the operation workflow schematic diagram of fingerprinting method of the present invention.
Fig. 7 is another operation workflow schematic diagram of fingerprint identification system of the present invention.
Wherein, Reference numeral:
10 fingerprint identification systems
11 fingerprint sensing unit
12 pressure sensing cells
13 CPU (central processing unit)
14 storage elements
△ L luminance delta
501,502,503,504,505,506,507,601,602,603,604,605,606,607,701,702,703,704,705 steps
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Refer to Fig. 1, Fig. 1 is the schematic diagram of fingerprint identification system 10 embodiment one of the present invention, fingerprint identification system 10 comprises a fingerprint sensing unit 11, one pressure sensing cells 12 and a CPU (central processing unit) 13, fingerprint sensing unit 11 and CPU (central processing unit) 13 electric property coupling, sense fingerprint to be measured and within the time that user once presses fingerprint, export multiple first fingerprint sensing image to CPU (central processing unit) 13, wherein fingerprint sensing unit 11 can be optical fingerprint device for identifying, the sensing apparatus of capacitance type fingerprint device for identifying or other exportable multiple first fingerprint sensing images.Pressure sensing cells 12 to be arranged at below fingerprint sensing unit 11 and with CPU (central processing unit) 13 electric property coupling, be in order to when fingerprint is pressed on fingerprint sensing unit 11 by user, export multiple first pressure sensor value to CPU (central processing unit) 13 according to user in the force once pressing fingerprint.
CPU (central processing unit) 13 and fingerprint sensing unit 11 and pressure sensing cells 12 electric property coupling, in order to receive above-mentioned multiple first fingerprint sensing image and multiple first pressure sensor values of correspondence, each first fingerprint sensing image is made to may correspond to a first pressure sensor value, as shown in Figure 2.In Fig. 2, the first corresponding pressure sensor value is designated as under each first fingerprint sensing image, therefore, Fig. 2 to arrange the first the most left fingerprint sensing image, it is the fingerprint sensing image that obtains when user presses fingerprint force 50g, and Fig. 2 arranges the first the rightest fingerprint sensing image and be the fingerprint sensing image that obtains when user presses fingerprint force 500g, and as seen from Figure 2, the larger fingerprint sensing image that exerts a force has higher brightness, namely in Fig. 2, user exerts a force the brightness of the brightness of fingerprint sensing image of 1500g fingerprint sensing image when exerting a force 50g apparently higher than user, this is because when user's force is larger, the fingerprint peaks of fingerprint protrusions can be flat because of pressure, the difference between the fingerprint paddy of fingerprint peaks and depression is caused to diminish, therefore fingerprint peaks and fingerprint paddy difference less fingerprint sensing image can be obtained when fingerprint sensing unit 11 senses, namely obtain the fingerprint sensing image that brightness is higher.
CPU (central processing unit) 13 more obtains multiple first pressure luminance parameters of these the first pressure sensor values corresponding according to the Luminance Distribution of multiple first fingerprint sensing images of the multiple first pressure sensor value of correspondence, namely each first fingerprint sensing image corresponding to the first pressure sensor value is all convertible into one first pressure luminance parameter, as shown in Figure 3, and along with pressure sensor value larger, the brightness of the first pressure luminance parameter can be higher, the namely brightness of the first pressure luminance parameter is proportional to the first corresponding fingerprint sensing image, in addition, luminance difference between different pressure sensor value is luminance delta △ L.Wherein, CPU (central processing unit) 13 first can calculate the Luminance Distribution in each first fingerprint sensing image, such as, in each the first fingerprint sensing image amount of pixels of each grey decision-making corresponding, then obtain according to the amount of pixels of each grey decision-making in the first fingerprint sensing image the first pressure luminance parameter being proportional to brightness, such as, be added using as the first above-mentioned pressure luminance parameter after all grey decision-making in the first fingerprint sensing image being multiplied by corresponding amount of pixels.
And there is certain variable quantity due to the pressure luminance parameter of actual fingerprint, therefore when the CPU (central processing unit) 13 identification fingerprint true and false, whether CPU (central processing unit) 13 can be equal to or greater than a brightness threshold value to judge the true and false of fingerprint to be measured by the luminance delta △ L judged between multiple first pressure luminance parameter, such as: the scope of multiple first pressure sensor value is 50g-400g, and the luminance difference of the pressure luminance parameter of pressure sensor value 50g and the pressure luminance parameter of pressure sensor value 400g is luminance delta △ L, CPU (central processing unit) 13 judges whether this luminance delta △ L is more than or equal to default brightness threshold value again, if namely luminance delta △ L is equal to or greater than brightness threshold value, central processing unit 13 judges that the multiple first fingerprint sensing images received are true, namely fingerprint to be measured is at present true fingerprint, if luminance delta △ L is less than brightness threshold value, central processing unit 13 judges that the multiple first fingerprint sensing images received are false, and fingerprint namely to be measured is at present false fingerprint.In addition, in order to the true and false making fingerprint identification system 10 recognize fingerprint more accurately, CPU (central processing unit) 13 more can judge whether the maximal value of received multiple first pressure sensor values is greater than one first pressure sensor threshold value, whether the first such as maximum pressure sensor value is greater than the first pressure sensor threshold value of 300g, to obtain higher luminance delta △ L, promote the correctness of identification fingerprint.
In other embodiments, fingerprint identification system 10 embodiment more can comprise a storage element 14, as shown in Figure 4, storage element 14 and above-mentioned CPU (central processing unit) 13 electric property coupling, therefore in the present embodiment, fingerprint identification system 10 more can store the pressure luminance parameter of corresponding different users in advance, to distinguish the fingerprint true and false more accurately.Therefore before distinguishing the fingerprint true and false, user first makes above-mentioned fingerprint sensing unit 11 obtain multiple second fingerprint sensing image according to the fingerprint that user presses, pressure sensing cells 12 also obtains multiple second pressure sensor value simultaneously, CPU (central processing unit) 13 can according to above-mentioned content, obtain multiple second pressure luminance parameters of corresponding multiple second pressure sensor value from multiple second fingerprint sensing images of the multiple second pressure sensor value of correspondence, and make storage element 14 store multiple second pressure luminance parameters of these corresponding multiple second pressure sensor values.In addition, in order to more precisely carry out the identification of the fingerprint true and false, CPU (central processing unit) 13 can judge that whether the maximal value of multiple second pressure sensor value is more than one second pressure sensor threshold value, such as 1000g, namely judge whether enough extensively user presses the range of pressure values of fingerprint, to comprise the second enough pressure luminance parameter of distribution, avoid occur store the second pressure luminance parameter scope too narrow and be not enough to comparison situation occur, such as: storage element 14 stores multiple second pressure luminance parameters of corresponding 50g to 500g, so when carrying out the distinguishing of the fingerprint true and false, user has pressed multiple first fingerprint sensing images of 100g to 750g, therefore multiple first pressure luminance parameter is obtained, but storage element 14 is because only store multiple second pressure luminance parameters of the second pressure sensor value of corresponding 50g to 500g, therefore the luminance delta of multiple second pressure luminance parameter cannot press fingerprint with user and the luminance delta of the multiple first pressure luminance parameters produced carrys out comparison.
In the above-described embodiment, when the CPU (central processing unit) 13 identification fingerprint true and false, multiple first pressure sensor values that CPU (central processing unit) 13 can press according to user, such as 50g to 300g, from storage element 14, obtain the second pressure luminance parameter corresponding to the second pressure sensor value 50g and 300g that user stores in advance, and the luminance delta △ L between the second pressure luminance parameter corresponding to the second pressure sensor value 50g and 300g is set as brightness threshold value.If therefore the luminance delta △ L between the first pressure luminance parameter of corresponding first pressure sensor value 50g and 300g is equal to or greater than brightness threshold value, central processing unit 13 judges that the multiple first fingerprint sensing images received are true, and fingerprint namely to be measured is at present true fingerprint; If the luminance delta △ L between the first pressure luminance parameter of corresponding first pressure sensor value 50g and 300g is less than brightness threshold value, central processing unit 13 judges that the multiple first fingerprint sensing images received are false, and fingerprint namely to be measured is at present false fingerprint.
According to foregoing, the present invention can summarize the method for operating of a fingerprint identification system 10, cooperation Fig. 1 fingerprint identification system 10 embodiment one and Fig. 5 is illustrated below.First, user presses fingerprint in this fingerprint sensing unit 11, fingerprint sensing unit 11 exports multiple first fingerprint sensing image according to this, and pressure sensing cells 12 exports multiple first pressure sensor values (step 501) of multiple corresponding first fingerprint sensing image according to this; Then CPU (central processing unit) 13 receives multiple first pressure sensor values of multiple first fingerprint sensing image and correspondence, and calculates the amount of pixels (step 502) in each first fingerprint sensing image corresponding to each GTG; CPU (central processing unit) 13 obtains according to the amount of pixels of each grey decision-making in the first fingerprint sensing image the first pressure luminance parameter (step 503) being proportional to brightness; Make CPU (central processing unit) 13 obtain a luminance delta according to multiple first pressure luminance parameter, and judge whether this luminance delta is equal to or greater than a brightness threshold value (step 504); If luminance delta is equal to or greater than brightness threshold value, CPU (central processing unit) 13 judges that multiple first fingerprint sensing image is true (step 505); If luminance delta is less than brightness threshold value, CPU (central processing unit) 13 judges that multiple first fingerprint sensing image is false (step 506).
Wherein, in order to make the true and false of fingerprint identification system 10 identification fingerprint more accurately, the method of operating of fingerprint identification system 10 more can comprise after step 503: CPU (central processing unit) 13 is judged, and whether the maximal value of these the first pressure sensor values is greater than one first pressure sensor threshold value, carry out step 504 if be judged as YES, if be judged as NO, get back to step 501 (step 507).
According to foregoing, the present invention more can summarize a fingerprinting method.Refer to Fig. 6, first, sense multiple first fingerprint sensing image and multiple first pressure sensor value (step 601); Calculate the amount of pixels (step 602) corresponding to each GTG in each first fingerprint sensing image; Multiple first pressure luminance parameters (step 603) of corresponding multiple first pressure sensor value are obtained according to the amount of pixels in each first fingerprint sensing image corresponding to each GTG; Obtain a luminance delta according to multiple first pressure luminance parameter, and judge whether this luminance delta is equal to or greater than a brightness threshold value (step 604); If luminance delta is equal to or greater than brightness threshold value, judge that multiple first fingerprint sensing image is true (step 605); If luminance delta is less than brightness threshold value, judge that multiple first fingerprint sensing image is false (step 606).
Fingerprinting method more can comprise after step 603: judge whether the maximal value of these the first pressure sensor values is greater than one first pressure sensor threshold value, carry out step 604 if be judged as YES, if be judged as NO, get back to step 601 (step 607).
Except above-mentioned method of operating, the present invention more can carry out the flow process of filing before distinguishing the fingerprint true and false, as shown in Figure 7, makes fingerprint identification system 10 more can differentiate the fingerprint true and false accurately.Its step comprises: the fingerprint that fingerprint sensing unit 11 presses according to user exports multiple second fingerprint sensing image, and pressure sensing cells 12 exports multiple second pressure sensor value (step 701); CPU (central processing unit) 13 calculates the amount of pixels (step 702) in each second fingerprint sensing image corresponding to each GTG; Then CPU (central processing unit) 13 obtains multiple second pressure luminance parameters (step 703) of corresponding multiple second pressure sensor value according to the amount of pixels in each second fingerprint sensing image corresponding to each GTG; Judge whether the maximal value of multiple second pressure sensor value is greater than one second pressure sensor threshold value, if be judged as YES, carry out step 705, if be judged as NO, gets back to step 701 (step 704); The multiple second pressure luminance parameters corresponding to multiple second pressure sensor value are stored in storage element 14 (step 705).Therefore when fingerprint identification system 10 carries out identification of fingerprint, the multiple second pressure luminance parameters be same as corresponding to multiple second pressure sensor values of multiple first pressure sensor value can be selected, and the luminance delta of multiple second pressure luminance parameter is set as brightness threshold value, to carry out identification of fingerprint more accurately.
Combine the above, because real fingerprint can cause the sensing image of different Luminance Distribution at various pressures, and the characteristic of this Luminance Distribution be not other forge fingerprints can copy easily, therefore the fingerprint identification system of the present invention force value that presses fingerprint according to user and the brightness of corresponding fingerprint sensing image change to judge the true and false of fingerprint, effectively can improve the correctness of fingerprint identification system.
Although the present invention discloses as above with embodiment; so itself and be not used to limit the present invention, anyly have the knack of this operator, without departing from the spirit and scope of the present invention; when a little change and retouching can be done, therefore protection scope of the present invention when depending on after pay the claim person of defining be as the criterion.
Claims (16)
1. a fingerprint identification system, is characterized in that, comprising:
One fingerprint sensing unit, in order to export multiple first fingerprint sensing image;
One pressure sensing cells, is arranged at below this fingerprint sensing unit, in order to export multiple first pressure sensor value; And
One CPU (central processing unit), with this fingerprint sensing unit and this pressure sensing cells electric property coupling, in order to receive these the first pressure sensor values of these the first fingerprint sensing images and correspondence, and obtain multiple first pressure luminance parameters of these the first pressure sensor values corresponding according to this, and judge whether a luminance delta of these the first pressure luminance parameters is equal to or greater than a brightness threshold value, if be judged as YES, this central processing unit judges that these the first fingerprint sensing images are true.
2. fingerprint identification system according to claim 1, it is characterized in that, more comprise a storage element, with this CPU (central processing unit) electric property coupling, the multiple second pressure luminance parameters obtained in order to store multiple second fingerprint sensing images that this CPU (central processing unit) exports by this fingerprint sensing unit and multiple second pressure sensor value that this pressure sensing cells correspondence exports.
3. fingerprint identification system according to claim 2, is characterized in that, this brightness threshold value is a luminance delta of these the second pressure luminance parameters these the second pressure sensor values corresponding.
4. fingerprint identification system according to claim 3, is characterized in that, these the second pressure sensor values are identical with these the first pressure sensor values.
5. fingerprint identification system according to claim 1, is characterized in that, this fingerprint sensing unit is the sensing apparatus of optical fingerprint device for identifying, capacitance type fingerprint device for identifying or other these the first fingerprint sensing images exportable.
6. the method for operating of a fingerprint identification system, it is characterized in that, this fingerprint identification system comprises a fingerprint sensing unit, a pressure sensing cells and a CPU (central processing unit), this CPU (central processing unit) and this fingerprint sensing unit and this pressure sensing cells electric property coupling, this fingerprint sensing unit, in order to export multiple first fingerprint sensing image, this pressure sensing cells, be arranged at below this fingerprint sensing unit, in order to export multiple first pressure sensor value, the method for operating of this fingerprint identification system comprises the following steps:
Make this fingerprint sensing unit export these the first fingerprint sensing images and make this pressure sensing cells correspondence export these the first pressure sensor values;
Make this CPU (central processing unit) receive these the first fingerprint sensing images and these the first pressure sensor values and obtain multiple first pressure luminance parameters of these the first pressure sensor values corresponding;
This CPU (central processing unit) is judged, and whether a luminance delta of these the first pressure luminance parameters is equal to or greater than a brightness threshold value;
When being judged as YES, these the first fingerprint sensing images are true; And
When being judged as NO, these the first fingerprint sensing images are false.
7. the method for operating of fingerprint identification system according to claim 6, is characterized in that, more comprises:
This CPU (central processing unit) is judged, and whether the maximal value of these the first pressure sensor values is greater than one first pressure sensor threshold value;
When being judged as YES, this CPU (central processing unit) is judged, and whether this luminance delta of these the first pressure luminance parameters is equal to or greater than this brightness threshold value; And
When being judged as NO, making this fingerprint sensing unit continue to export these the first fingerprint sensing images and making this pressure sensing cells correspondence export these the first pressure sensor values.
8. the method for operating of fingerprint identification system according to claim 6, is characterized in that, this fingerprint identification system more comprises a storage element, with this central processing unit electric property coupling.
9. the method for operating of fingerprint identification system according to claim 8, is characterized in that, more comprises:
Make this fingerprint sensing unit export multiple second fingerprint sensing image and make this pressure sensing cells correspondence export multiple second pressure sensor value;
Make this CPU (central processing unit) receive these the second fingerprint sensing images and these the second pressure sensor values and obtain multiple second pressure luminance parameters of these the second pressure sensor values corresponding according to this; And
This storage element is made to store these the second pressure sensor values of these the second pressure luminance parameters and correspondence.
10. the method for operating of fingerprint identification system according to claim 9, is characterized in that, more comprises:
This CPU (central processing unit) is judged, and whether the maximal value of these the second pressure sensor values is greater than one second pressure sensor threshold value;
When being judged as YES, this storage element is made to store these the second pressure sensor values of these the second pressure luminance parameters and correspondence; And
When being judged as NO, making this fingerprint sensing unit continue to export these the second fingerprint sensing images according to this fingerprint and making this pressure sensing cells correspondence export these the second pressure sensor values.
The method of operating of 11. fingerprint identification systems according to claim 9, it is characterized in that, this brightness threshold value is a luminance delta of these the second pressure luminance parameters these the second pressure sensor values corresponding, and these the second pressure sensor values are identical with these the first pressure sensor values.
12. 1 kinds of fingerprinting method, is characterized in that, comprising:
Sense multiple first pressure sensor values of multiple first fingerprint sensing image and correspondence;
Multiple first pressure luminance parameters of these the first pressure sensor values corresponding are obtained according to these the first fingerprint sensing images and these the first pressure sensor values;
Judge whether a luminance delta of these the first pressure luminance parameters is equal to or greater than a brightness threshold value;
When being judged as YES, these the first fingerprint sensing images are true; And
When being judged as NO, these the first fingerprint sensing images are false.
13. fingerprinting method according to claim 12, is characterized in that, more comprise:
Judge whether the maximal value of these the first pressure sensor values is greater than one first pressure sensor threshold value;
When being judged as YES, judge whether this luminance delta of these the first pressure luminance parameters is equal to or greater than this brightness threshold value; And
When being judged as NO, continue to export these the first fingerprint sensing images and corresponding these the first pressure sensor values of output.
14. fingerprinting method according to claim 12, is characterized in that, more comprise:
Export multiple second fingerprint sensing image and the multiple second pressure sensor value of corresponding output;
Multiple second pressure luminance parameters of these the second pressure sensor values corresponding are obtained according to these the second fingerprint sensing images and these the second pressure sensor values; And
Store these the second pressure sensor values of these the second pressure luminance parameters and correspondence.
15. fingerprinting method according to claim 14, is characterized in that, more comprise:
Judge whether the maximal value of these the second pressure sensor values is greater than one second pressure sensor threshold value;
When being judged as YES, store these the second pressure sensor values of these the second pressure luminance parameters and correspondence; And
When being judged as NO, continue to export these the second fingerprint sensing images and corresponding these the second pressure sensor values of output.
16. fingerprinting method according to claim 14, it is characterized in that, this brightness threshold value is a luminance delta of these the second pressure luminance parameters these the second pressure sensor values corresponding, and these the second pressure sensor values are identical with these the first pressure sensor values.
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| TW104115111A TWI604384B (en) | 2015-05-12 | 2015-05-12 | Fingerprint identification system and method |
| TW104115111 | 2015-05-12 |
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| CN105843425A (en) * | 2016-03-23 | 2016-08-10 | 深圳市金立通信设备有限公司 | Key and terminal |
| CN105913012A (en) * | 2016-04-08 | 2016-08-31 | 广东欧珀移动通信有限公司 | Fingerprint module group, mobile terminal and fingerprint module group manufacture method |
| CN110986917A (en) * | 2016-06-13 | 2020-04-10 | 原相科技股份有限公司 | Track sensing system and track sensing method thereof |
| CN110986917B (en) * | 2016-06-13 | 2021-10-01 | 原相科技股份有限公司 | Track sensing system and track sensing method thereof |
| WO2018072171A1 (en) * | 2016-10-20 | 2018-04-26 | 深圳市汇顶科技股份有限公司 | Fingerprint-based pressure measurement method and device |
| WO2018120440A1 (en) * | 2016-12-28 | 2018-07-05 | 创智能科技股份有限公司 | Optical biometric recognition device |
| WO2018218670A1 (en) * | 2017-06-02 | 2018-12-06 | 深圳市汇顶科技股份有限公司 | Fingerprint chip packaging module, fingerprint recognition module and packaging method |
| US10614282B2 (en) * | 2017-08-31 | 2020-04-07 | Boe Technology Group Co., Ltd. | Pressure sensing assembly integrated with fingerprint identification function, driving method thereof, and display device |
| CN109407374B (en) * | 2018-07-24 | 2021-11-02 | 友达光电股份有限公司 | Display device and sensing element substrate |
| CN109407374A (en) * | 2018-07-24 | 2019-03-01 | 友达光电股份有限公司 | Display device and sensing element substrate |
| CN110543864A (en) * | 2018-11-30 | 2019-12-06 | 神盾股份有限公司 | Sensor and fake finger identification method |
| CN110795718A (en) * | 2019-10-30 | 2020-02-14 | 维沃移动通信有限公司 | Fingerprint response method and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201640414A (en) | 2016-11-16 |
| TWI604384B (en) | 2017-11-01 |
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