CN108734076A - Fingerprint identification device and fingerprint identification method - Google Patents
Fingerprint identification device and fingerprint identification method Download PDFInfo
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- CN108734076A CN108734076A CN201711167931.0A CN201711167931A CN108734076A CN 108734076 A CN108734076 A CN 108734076A CN 201711167931 A CN201711167931 A CN 201711167931A CN 108734076 A CN108734076 A CN 108734076A
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- 230000003287 optical effect Effects 0.000 claims abstract description 42
- 238000012795 verification Methods 0.000 claims abstract description 17
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- 238000010586 diagram Methods 0.000 description 12
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
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- 230000008901 benefit Effects 0.000 description 1
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- 210000000554 iris Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
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- G06V40/13—Sensors therefor
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- H—ELECTRICITY
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- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
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Abstract
A kind of fingerprint identification device of present invention proposition includes light source, processor and optical receiver.The light source is for emitting light to object.The processor couples the light source.The optical receiver couples the processor.The optical receiver is for capturing object image of the object in time interval.The processor analyzes the object image to obtain fingerprint image, and the processor carries out fingerprint recognition operation to obtain fingerprint recognition result to the fingerprint image.The processor further analyzes the object image and changes data to obtain pixel of the object image in the time interval, and the processor determines whether the fingerprint image passes through verification according to the fingerprint recognition result and pixel variation data.In addition, the present invention also proposes a kind of fingerprint identification method.
Description
Technical field
The present invention relates to a kind of identification technologies, and more particularly to a kind of fingerprint identification device and fingerprint identification method.
Background technology
The type of bio-identification includes face, sound, iris, retina, vein and fingerprint recognition etc..Due to everyone
Fingerprint is all unique, and fingerprint is not easy to change with age or physical condition, therefore fingerprint identification device is
As a kind of current most popular biological recognition system.According to the difference of sensing mode, fingerprint identification device can also be divided into optics
Formula, condenser type, Supersonic waves and thermal-induction type etc..
However, since traditional fingerprint identification device can not effectively distinguish true from false finger（Live body or non-living body）Difference,
Therefore lead to the forgery finger for usually having criminal that can use silica gel material, and on the forgery finger that silica gel material makes
It is quasi- really to have fingerprint and pore.In this way, being pressed in fingerprint recognition with the forgery finger with silica gel characteristic and with fingerprint, pore
After device, it can so that forging finger equally has the fingers deformed flow characteristic after pressing and fingerprint, pore characteristic come fingerprint of out-tricking
Identification device, and then it is to be pressed by the finger of live body, thus cause to know to cause fingerprint identification device not identify whether correctly
Loophole on not.Therefore, the present invention will propose the solution of several embodiments below.
Invention content
A kind of fingerprint identification device of present invention offer and fingerprint identification method can provide good fingerprint identification function, and
And it can effectively avoid forgery finger and pass through verification.
The fingerprint identification device of the present invention includes light source, processor and optical receiver.The light source is for emitting light
To object.The optical receiver couples the processor.The optical receiver is for capturing the object in time interval
Object image.The processor analyzes the object image to obtain fingerprint image, and the processor is to the fingerprint image
As carrying out fingerprint recognition operation to obtain fingerprint recognition result.The processor further analyzes the object image to obtain
State object image in the time interval pixel variation data, and the processor according to the fingerprint recognition result with
And the pixel changes data to determine whether the fingerprint image passes through verification.
In one embodiment of the invention, above-mentioned fingerprint identification device further includes touch sensing.The touch-control passes
Sensor couples the processor.The touch sensing for sense the object whether be placed on the touch sensing with
Sensing signal is exported to the processor.The processor decides whether to drive the light source according to the sensing signal, with
The light source is set to emit the light.
In one embodiment of the invention, the light of above-mentioned light source transmitting is single wavelength light or more
Weight wavelength light.
In one embodiment of the invention, the object image that the above-mentioned optical receiver captures includes multiple objects
Part image.The processor selects one of the multiple object image to be analyzed to obtain the fingerprint image.
In one embodiment of the invention, the object image that the above-mentioned optical receiver captures includes multiple objects
Part image.At least part block of each that the processor analyzes the multiple object image respectively is corresponded to obtaining
Multiple pixel informations of the multiple object image in the time interval.The processor counts the multiple pixel information
Change data to obtain the pixel.
In one embodiment of the invention, above-mentioned the multiple pixel information is respectively the multiple object image
Total red pixel value of at least part block of each.
In one embodiment of the invention, above-mentioned the multiple pixel information is respectively the multiple object image
The red pixel data of at least part block of each, the operation result of green pixel data and blue pixel data.
In one embodiment of the invention, it is described to judge to analyze the pixel variation data for the above-mentioned processor
Whether the pixel value in pixel variation data is cyclically-varying in the time interval.
In one embodiment of the invention, above-mentioned when processor judges the pixel in the pixel variation data
When value is cyclically-varying in the time interval, the processor is further according to the pixel value in the time interval
In cyclically-varying result generate heartbeat message.
The fingerprint identification method of the present invention is suitable for fingerprint identification device.The fingerprint identification method includes the following steps：
By source emissioning light line to object；Object image of the object in time interval is captured by optical receiver；Analysis institute
Object image is stated to obtain fingerprint image, and fingerprint recognition operation is carried out to obtain fingerprint recognition knot to the fingerprint image
Fruit；It further analyzes the object image and changes data to obtain pixel of the object image in the time interval；With
And judge whether the fingerprint image passes through verification according to the fingerprint recognition result and pixel variation data.
In one embodiment of the invention, above-mentioned fingerprint identification method further includes：Institute is sensed by touch sensing
State whether object is placed on the touch sensing to export sensing signal；And decided whether according to the sensing signal
The light source is driven, so that the light source emits the light.
In one embodiment of the invention, the light of above-mentioned light source transmitting is single wavelength light or more
Weight wavelength light.
In one embodiment of the invention, the object image that the above-mentioned optical receiver captures includes multiple objects
Part image, and analyze the step of object image is to obtain the fingerprint image and include：Select the multiple object image
One of analyzed to obtain the fingerprint image.
In one embodiment of the invention, the object image that the above-mentioned optical receiver captures includes multiple objects
Part image, and the object image is further analyzed to obtain the pixel of the object image in the time interval
The step of variation data includes：At least part block of each of the multiple object image is analyzed respectively to obtain correspondence
In multiple pixel informations of the multiple object image in the time interval；And the multiple pixel information of statistics is to take
It obtains the pixel and changes data.
In one embodiment of the invention, above-mentioned the multiple pixel information is respectively the multiple object image
Total red pixel value of at least part block of each.
In one embodiment of the invention, above-mentioned the multiple pixel information is respectively the multiple object image
The red pixel data of at least part block of each, the operation result of green pixel data and blue pixel data.
In one embodiment of the invention, above-mentioned that data is changed according to the fingerprint recognition result and the pixel
To judge that the step of whether fingerprint image passes through verification includes：The pixel variation data is analyzed to judge that the pixel becomes
Whether the pixel value in change data is cyclically-varying in the time interval.
In one embodiment of the invention, above-mentioned fingerprint identification method further includes：When in the pixel variation data
The pixel value in the time interval be cyclically-varying when, further according to the pixel value in the time interval
In cyclically-varying result generate heartbeat message.
Based on the above, fingerprint identification device of the invention and fingerprint identification method can be according to the objects of object to be identified
Pixel of the part image in time interval changes data to judge whether the object is real finger, and fingerprint recognition of arranging in pairs or groups
Operation passes through verification effectively to avoid forging finger.
In order to which features described above of the invention and advantage can be clearer and more comprehensible, embodiment is hereafter especially enumerated, and combine attached
Figure is described in detail below.
Description of the drawings
Fig. 1 shows the block diagram of the fingerprint identification device of one embodiment of the invention.
Fig. 2A shows the schematic diagram of the fingerprint identification device of one embodiment of the invention.
Fig. 2 B show the schematic diagram of the fingerprint identification device of another embodiment of the present invention.
Fig. 2 C show the schematic diagram of the fingerprint identification device of another embodiment of the invention.
Fig. 3 shows the flow chart of the fingerprint identification method of one embodiment of the invention.
Fig. 4 shows the schematic diagram of the object image of one embodiment of the invention.
Fig. 5 shows the schematic diagram of the pixel variation data of one embodiment of the invention.
Symbol description：
110：Processor
120：Touch sensing
30,330,530,730：Light source
140,340,540,740：Optical receiver
200,400,600：Object
350,550,750：Substrate
360：Lens
370,570：Pressing plate
900：Object image
910：Fingerprint
920：Block image
C1：Change curve
100,300,500,700：Fingerprint identification device
S810,S820,S830,S840,S850：Step.
Specific implementation mode
In order to allow present disclosure to be more easily understood, multiple embodiments set forth below illustrate the present invention, so
And the present invention is not limited only to cited multiple embodiments.And combination appropriate is also still allowed between embodiment.In addition, attached
Element/component/step that identical label is used in figure and embodiment, represents same or like component.
Fig. 1 shows the block diagram of the fingerprint identification device of one embodiment of the invention.With reference to figure 1, in the present embodiment, refer to
Line identification device 100 includes processor 110, touch sensing 120, light source 130 and optical receiver 140.Processor 110 couples
Sensor 120, light source 130 and optical receiver 140.In the present embodiment, processor 110 is sensed by touch sensing 120
Whether there is object to be placed on fingerprint identification device 100.When touch sensing 120 senses the object, touch sensing 120
Sensing signal is exported to processor 110, so that processor 110 drives light source 130.
In the present embodiment, light source 130 is for emitting light to the object, so that the surface reflection that light passes through the object
To optical receiver 140.Optical receiver 140 exports the object for capturing object image of the object in time interval
Image is to processor 110.In the present embodiment, processor 110 analyzes object image to obtain object image, and to the object figure
Fingerprint as in carries out fingerprint recognition and operates to obtain fingerprint recognition result.Also, processor 110 further analyzes the object shadow
As changing data to obtain pixel of the object image in time interval.In the present embodiment, fingerprint identification device 100 combines
Fingerprint recognition result and analysis pixel change the result of data to determine whether the fingerprint image provided by the object can pass through
Verification.
In other words, the fingerprint identification device 100 of the present embodiment be in addition to that can identify fingerprint characteristic, and can be into one
Step judges whether the object is real finger by pixel variation data of the object in the time interval is analyzed.Citing comes
It says, if the fingerprint characteristic in fingerprint image meets the registered fingerprint spy having previously been stored in fingerprint identification device 100
Sign data, but pixel variation data of the object in time interval be not when meeting preset condition, then fingerprint identification device 100
Judge the non-genuine finger of the object, and the fingerprint image of the object can not pass through verification.Again for example, if in fingerprint image
Fingerprint characteristic as in meets the registered fingerprint characteristic data having previously been stored in fingerprint identification device 100, and the object
When pixel variation data of the part in the time interval meets the preset condition, then fingerprint identification device 100 judges that the object is
Real finger, and judge that the fingerprint image of the object passes through verification.That is, the fingerprint identification device 100 of the present embodiment
Effectively the fingerprint characteristic provided by forgery finger can be avoided to pass through verification by above two Rule of judgment.
However, the identification and alignments those skilled in the art about the fingerprint characteristic described in the present embodiment can roots
Enough enlightenments, suggestion are obtained according to the common knowledge of technical field and implements explanation, therefore details are not described herein.
In the present embodiment, processor 110 is, for example, central processing unit（Central Processing Unit,
CPU）, SoC（System on Chip, SOC）The either general service or specific use of other programmables
Microprocessor（microprocessor）, digital signals processor（Digital Signal Processor, DSP）, can program
Change controller, special application integrated circuit（Application Specific Integrated Circuits, ASIC）, can
Programmable logic device（Programmable Logic Device, PLD）, other similar process devices or these devices group
It closes.And fingerprint identification device 100 further comprises storage device, wherein storage device be, for example, it is any kind of fixed or
The random access memory of packaged type（Random Access Memory, RAM）, read-only memory（Read-Only
Memory, ROM）, flash memory（flash memory）Or the combination of similar component or said elements.In the present embodiment,
Storage device is used to store object image data, object image document and multiple modules of various embodiments of the present invention etc., so that
Processor 110 can read storage device and execute these data and module, to realize the finger described in various embodiments of the present invention
Line recognition methods.
In the present embodiment, light source 130 is for emitting single wavelength light or multi-wavelength light, wavelength between
Between 400nm ~ 3000nm.That is, when touch sensing 120 senses object, processor 110 can drive light source 130,
So that light source 130 emits single wavelength light or multi-wavelength light to irradiate object.
In the present embodiment, optical receiver 140 is, for example, photosensitive coupling element（Charge Coupled Device,
CCD）Or Complimentary Metal-Oxide semiconductor（Complementary Metal-Oxide Semiconductor, CMOS）.Tool
For body, in the present embodiment, the sustainable light for receiving object reflection in time interval of optical receiver 140 is arrived with capturing
The object image of solid color or polychrome, and optical receiver 140 exports the data of the object image to processor 110, with
Processor 110 is set to be analyzed according to the data of the object image.In the present embodiment, optical receiver for example export yuv format,
The object image of rgb format or RAW rgb formats is to processor 110.
In the present embodiment, touch sensing 120 may, for example, be capacitance type sensor（Capacitive Sensor）,
And sensing signal is capacitance signal.Touch sensing 120 may, for example, be configuration on the pressing plate with fingerprint sensing region
Metal frame or be integrated into the pressing plate, the present invention is not limited thereto.That is, when object is placed on fingerprint recognition dress
When setting 100 fingerprint sensing region, if object is real finger, touch sensing 120 senses capacitance variations, therefore touches
Sensor 120 is controlled according to the capacitance variations output capacitance signal to processor 110, so that processor 110 drives light source 130.Instead
It, if object is to forge finger, touch sensing 120 can not sense capacitance variations, therefore touch sensing 120 is not defeated
Go out capacitance signal to processor 110, so that processor 110 will not drive light source 130.However, in one embodiment, fingerprint is known
Other device 100 may not include touch sensing 120, light source 130 can for normally open or by processor 110 by other means Lai
Judge whether to drive light source 130, the present invention is not limited thereto.
Following figure 2 A is used to illustrate the implementation of a variety of device architectures of the fingerprint identification device of the present invention to Fig. 2 C embodiments
Mode, but the present invention is not limited thereto.
Fig. 2A shows the schematic diagram of the fingerprint identification device of one embodiment of the invention.With reference to figure 2A, in the present embodiment,
Fingerprint identification device 300 includes light source 330, optical receiver 340, substrate 350, camera lens 360 and pressing plate 370.Light source 330 and
Optical receiver 340 configures on substrate 350, and optical receiver 340 has camera lens 360.In the present embodiment, when object 200
It is placed on the fingerprint sensing region of pressing plate 370, light source 330 is actuated to transmitting light to object 200.Optical receiver 340 is borrowed
Imaging of the object 200 on pressing plate 370 is obtained by camera lens 360, to export object image to the processor of fingerprint identification device.
Fig. 2 B show the schematic diagram of the fingerprint identification device of another embodiment of the present invention.With reference to figure 2B, in the present embodiment
In, fingerprint identification device 500 includes light source 530, optical receiver 540, substrate 550 and pressing plate 570.Light source 530 and light connect
The configuration of device 540 is received on substrate 550.In the present embodiment, when object 400 is placed on the fingerprint sensing region of pressing plate 570, light
Source 530 is actuated to transmitting light to object 400.Optical receiver 540 captures imaging of the object 400 on pressing plate 570, with output
Object image to fingerprint identification device processor.In the present embodiment, optical receiver 540 also can be captured directly and image in pressing plate
Object image on 570.
Fig. 2 C show the schematic diagram of the fingerprint identification device of another embodiment of the invention.With reference to figure 2C, in the present embodiment
In, fingerprint identification device 700 includes light source 730, optical receiver 740 and substrate 750.Light source 730 and optical receiver 740 are matched
It sets on substrate 750.In the present embodiment, when object 600 is directly placed on optical receiver 740, light source 730 is actuated to send out
Light is penetrated to object 600.Optical receiver 740 captures the directly acquisition object image of object 600, is believed with exporting corresponding photoelectric current
Number to fingerprint identification device processor.
In above-mentioned Fig. 2A to Fig. 2 C, the fingerprint identification device 300,500,700 of these embodiments can be further respectively
Including touch sensing.Specifically, the fingerprint identification device 300,500,700 of the respective embodiments described above pressing in object respectively
Conductive material, e.g. metal frame can be set in pressure range.Conductive material can be covered in neighboring area or the optical receiver of pressing plate
Neighboring area so that after real finger touches conductive material, the signal that touch sensing can be provided by conductive material comes
Generate capacitance variations, and touch sensing according to the capacitance variations output capacitance signal to fingerprint identification device 300,500,
700 processor., whereas if not being that real finger touches conductive material, then touch sensing will not output capacitance signal.
Therefore, the fingerprint identification device 300,500,700 of the respective embodiments described above, which can have, avoids accidentally touching or avoiding for forgery finger
The function being identified.
Fig. 3 shows the flow chart of the fingerprint identification method of one embodiment of the invention.With reference to figure 1 and Fig. 3, the present embodiment
Fingerprint identification method be applicable to the fingerprint identification device of Fig. 1.In step S810, fingerprint identification device 100 is by light source
130 emit light to object.In step S820, fingerprint identification device 100 captures object in time zone by optical receiver 140
Between in object image.In step S830, fingerprint identification device 100 is analyzed object image by processor 110 and is referred to obtaining
Print image, and fingerprint recognition operation is carried out to obtain fingerprint recognition result to fingerprint image.
In the present embodiment, optical receiver 140 captures object image of the object in time interval, the wherein time interval
It may, for example, be 10 seconds.That is, processor 110 can obtain the object image being made of multiple continuous object images.
In the present embodiment, wherein one of these multiple continuous object images of 110 fechtable of processor grasps to be used for fingerprint recognition
Make, such as first object image, but the present invention is not limited thereto.Also, the optical receiver 140 of the present embodiment can provide for example
It is the object image of yuv format, rgb format or RAW rgb formats to processor 110.In the present embodiment, processor 110 is sentenced
Whether the fingerprint characteristic in the disconnected object image meets the registered fingerprint characteristic data stored in advance, to determine fingerprint image
Fingerprint recognition result.
In step S840, processor 110 further analyzes the object image to obtain the object image in the time zone
Between in pixel change data.In the present embodiment, processor 110 analyzes the every of these object images of the object image respectively
One at least part block corresponds to multiple pixel informations of these object images in the time interval to obtain, and
Processor 110 counts these pixel informations and changes data to obtain pixel.
For example, Fig. 4 shows the schematic diagram of the object image of one embodiment of the invention.Fig. 5 shows the present invention one
The schematic diagram of the pixel variation data of embodiment.With reference to figure 4, one of object image described in the various embodiments described above object
Image can be as shown in Figure 4 object image 900.In this embodiment, object image 900 includes fingerprint 910, and object figure
Picture 900 can be for example with 320 × 240 pixel quantity, but the present invention is not limited thereto.In this embodiment, processor 110
The block image 920 of a part for object image 900 can be analyzed, wherein the block image 920 can for example with 220 ×
108 pixel quantity.Processor 100 adds up the red pixel values of whole pixels of the block image 920, using as object figure
As 900 pixel value information.Alternatively, in one embodiment, processor 100 is total by whole pixels of the block image 920
The totalling of red pixel value, total green pixel values and total blue pixel value, using the pixel value information as object image 900.
That is, each object image that processor 110 can be directed to the object image is analyzed, to obtain these objects respectively
The pixel value information out of the ordinary of image.However, the block range and block size of the block image 920 of the present invention are not limited to figure
Shown in 4, the block range and block size of block image 920 can be determined according to different judgement demands.
With reference to figure 5, in this embodiment, processor 110 believes the pixel value of each object image of the object image
Breath is integrated into pixel variation data as shown in Figure 5 according to the corresponding time.In Figure 5, if object is real finger,
Due to having capilary under the surface of real finger, total red pixel value of each object image of object image will
Periodically change with palmic rate.Processor 110 can count the total red of each object image in time interval
Color pixel value, to obtain change curve C1.In this embodiment, processor 110 can be according to change curve C1 in the time interval
In whether be cyclically-varying, to judge whether the object is real finger.Also, processor 110 can be further according to variation
Cyclically-varying results of the curve C1 in the time interval generates heartbeat message.That is, fingerprint identification device 100 removes
Have the function of fingerprint recognition, further has the function of the HR Heart Rate of sensing user.
Therefore, in step S850, processor 110 is according to above-mentioned fingerprint recognition result and above-mentioned pixel variation money
Expect to judge whether fingerprint image is to pass through verification.That is, if processor 110 judges the finger of the fingerprint image of the object
Line recognition result is to meet the registered fingerprint characteristic data stored in advance, and processor 110 judges the object of the object
It is cyclically-varying in the time interval during sensing that the pixel of image, which changes data, then processor 110 judges the fingerprint image
As passing through verification., whereas if processor 110 judges that the fingerprint recognition result of the fingerprint image of the object does not meet advance storage
Registered fingerprint characteristic data or processor 110 judge the object object image pixel variation data sensing
There is no cyclically-varying in the time interval of period, then processor 110 judges that the fingerprint image does not pass through verification.
In conclusion the fingerprint identification device and fingerprint identification method of the present invention can be by the objects for capturing time interval
Image obtains multiple object images.Also, the fingerprint identification device of the present invention can be directed to wherein one of these object images
Object image carries out fingerprint recognition operation, and is analyzed for each Zhang Jinhang of these object images, is existed with obtaining the object
The pixel of the object image in the time interval changes data.If the pixel of the object image changes data in the time zone
Between have periodically variable characteristic, then fingerprint identification device judge the object for real finger.Therefore, fingerprint of the invention is known
Other device, can also be by judging whether object is real finger, effectively to avoid forging hand in addition to that can carry out fingerprint recognition operation
The fingerprint characteristic of finger passes through verification.It is provided in addition, the fingerprint identification device of the present invention can also change according to the pixel of the object image
Expect to provide heartbeat message.
Although the present invention is disclosed by way of embodiment as above, it is not intended to make any limit to the present invention
Fixed, the people with common knowledge should can make one without departing from the spirit and scope of the present invention in any technical field
It changes and retouches, therefore protection scope of the present invention should be subject to the range that claim defined.
Claims (18)
1. a kind of fingerprint identification device, which is characterized in that the fingerprint identification device includes：
Light source, for emitting light to object；
Processor couples the light source；And
Optical receiver couples the processor, and the optical receiver is for capturing object shadow of the object in time interval
Picture,
The wherein described processor analyzes the object image to obtain fingerprint image, and the processor is to the fingerprint image
Fingerprint recognition operation is carried out to obtain fingerprint recognition as a result, the wherein described processor further analyzes the object image to obtain
Pixel of the object image in the time interval changes data, and the processor is according to the fingerprint recognition result
And the pixel changes data to determine whether the fingerprint image passes through verification.
2. fingerprint identification device according to claim 1, which is characterized in that the fingerprint identification device further includes：
Touch sensing couples the processor, and the touch sensing is for sensing whether the object is placed on institute
It states to export sensing signal to the processor on touch sensing,
The wherein described processor decides whether to drive the light source according to the sensing signal, so that described in light source transmitting
Light.
3. fingerprint identification device according to claim 1, which is characterized in that the light of the light source transmitting is single
Wavelength light or multi-wavelength light.
4. fingerprint identification device according to claim 1, which is characterized in that the object shadow that the optical receiver captures
As including multiple object images, and the processor selects one of the multiple object image to be analyzed to obtain
The fingerprint image.
5. fingerprint identification device according to claim 1, which is characterized in that the object shadow that the optical receiver captures
As including multiple object images, and the processor analyzes at least part of each of the multiple object image respectively
Block corresponds to multiple pixel informations of the multiple object image in the time interval to obtain, wherein the processor
It counts the multiple pixel information and changes data to obtain the pixel.
6. fingerprint identification device according to claim 5, which is characterized in that the multiple pixel information is respectively described more
Total red pixel value of at least part block of each of a object image.
7. fingerprint identification device according to claim 5, which is characterized in that the multiple pixel information is respectively described more
Red pixel data, green pixel data and the blue pixel data of at least part block of each of a object image
Operation result.
8. fingerprint identification device according to claim 1, which is characterized in that the processor analyzes the pixel variation money
Material is to judge whether the pixel value in the pixel variation data is cyclically-varying in the time interval.
9. fingerprint identification device according to claim 8, which is characterized in that when processor judges that the pixel changes data
In the pixel value in the time interval be cyclically-varying when, the processor further exists according to the pixel value
Cyclically-varying result in the time interval generates heartbeat message.
10. a kind of fingerprint identification method, it is suitable for fingerprint identification device, which is characterized in that the fingerprint identification method includes：
By source emissioning light line to object；
Object image of the object in time interval is captured by optical receiver；
The object image is analyzed to obtain fingerprint image, and fingerprint recognition operation is carried out to the fingerprint image and is referred to obtaining
Line recognition result；
It further analyzes the object image and changes data to obtain pixel of the object image in the time interval；With
And
Judge whether the fingerprint image passes through verification according to the fingerprint recognition result and pixel variation data.
11. fingerprint identification method according to claim 10, which is characterized in that the fingerprint identification method further includes：
Sense whether the object is placed on the touch sensing to export sensing signal by touch sensing；And
Decide whether to drive the light source according to the sensing signal, so that the light source emits the light.
12. fingerprint identification method according to claim 10, which is characterized in that the light of the light source transmitting is single
One wavelength light or multi-wavelength light.
13. fingerprint identification method according to claim 10, which is characterized in that the object that the optical receiver captures
Image includes multiple object images, and analyzes the step of object image is to obtain the fingerprint image and include：
One of the multiple object image is selected to be analyzed to obtain the fingerprint image.
14. fingerprint identification method according to claim 10, which is characterized in that the object that the optical receiver captures
Image includes multiple object images, and further analyzes the object image to obtain the object image in the time zone
Between in the pixel variation data the step of include：
At least part block of each of the multiple object image is analyzed respectively corresponds to the multiple object to obtain
Multiple pixel informations of the image in the time interval；And
It counts the multiple pixel information and changes data to obtain the pixel.
15. fingerprint identification method according to claim 14, which is characterized in that the multiple pixel information is respectively described
Total red pixel value of at least part block of each of multiple object images.
16. fingerprint identification method according to claim 14, which is characterized in that the multiple pixel information is respectively described
Red pixel data, green pixel data and the blue pixel money of at least part block of each of multiple object images
The operation result of material.
17. fingerprint identification method according to claim 10, which is characterized in that according to the fingerprint recognition result and institute
Pixel variation data is stated to judge that the step of whether fingerprint image passes through verification includes：
Analyze pixel variation data with judge the pixel value in the pixel variation data in the time interval whether
For cyclically-varying.
18. fingerprint identification method according to claim 17, which is characterized in that the fingerprint identification method further includes：
When the pixel value in the pixel variation data is cyclically-varying in the time interval, further basis
Cyclically-varying result of the pixel value in the time interval generates heartbeat message.
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| CN112232213A (en) * | 2020-01-21 | 2021-01-15 | 神盾股份有限公司 | Method and system for identifying and preventing counterfeit of fingerprint under screen |
| CN112580392A (en) * | 2019-09-27 | 2021-03-30 | 宏碁股份有限公司 | Fingerprint recognition apparatus and driving method thereof |
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| CN111339799B (en) * | 2018-12-18 | 2023-02-28 | 广州印芯半导体技术有限公司 | Fingerprint sensing device and fingerprint sensing method |
| CN112580392A (en) * | 2019-09-27 | 2021-03-30 | 宏碁股份有限公司 | Fingerprint recognition apparatus and driving method thereof |
| CN112580392B (en) * | 2019-09-27 | 2024-03-22 | 宏碁股份有限公司 | Fingerprint identification device and driving method thereof |
| CN112232213A (en) * | 2020-01-21 | 2021-01-15 | 神盾股份有限公司 | Method and system for identifying and preventing counterfeit of fingerprint under screen |
| CN112232213B (en) * | 2020-01-21 | 2024-02-27 | 神盾股份有限公司 | Under-screen fingerprint identification anti-counterfeiting method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI664766B (en) | 2019-07-01 |
| CN108735764A (en) | 2018-11-02 |
| TW201839655A (en) | 2018-11-01 |
| TWI632717B (en) | 2018-08-11 |
| TW201839654A (en) | 2018-11-01 |
| TWI640929B (en) | 2018-11-11 |
| TW201839661A (en) | 2018-11-01 |
| CN108734074B (en) | 2022-02-18 |
| CN108734075A (en) | 2018-11-02 |
| TW201839667A (en) | 2018-11-01 |
| TW201840031A (en) | 2018-11-01 |
| TWI630557B (en) | 2018-07-21 |
| CN108734074A (en) | 2018-11-02 |
| TWI638317B (en) | 2018-10-11 |
| CN108735765A (en) | 2018-11-02 |
| TW201840030A (en) | 2018-11-01 |
| TWI642001B (en) | 2018-11-21 |
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