CN204731798U - A kind of intelligent frequency-conversion 3D fingerprint sensor - Google Patents
A kind of intelligent frequency-conversion 3D fingerprint sensor Download PDFInfo
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- CN204731798U CN204731798U CN201520460930.5U CN201520460930U CN204731798U CN 204731798 U CN204731798 U CN 204731798U CN 201520460930 U CN201520460930 U CN 201520460930U CN 204731798 U CN204731798 U CN 204731798U
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Abstract
The utility model is applicable to fingerprint recognition field, provide a kind of intelligent frequency-conversion 3D fingerprint sensor, it is installed on the portable mobile communications device, it metal edge frame comprising system level chip and be arranged on system level chip periphery, described system level chip comprises: capacitance type fingerprint acquisition module, analog-to-digital conversion module, main control module, I/O control module, power management module and line acquisition unit; Described intelligent frequency-conversion 3D fingerprint sensor is highly integrated system level chip.Intelligent frequency-conversion 3D fingerprint sensor of the present utility model, by being highly integrated into system level chip, making its volume greatly reduce, can be arranged on various portable mobile communication apparatus; By gathering fingerprint in conjunction with capacitance type fingerprint acquisition module and line acquisition unit, making the deep enough finger skin corium of fingerprint collecting signal energy, reaching identifying live fingerprint, distinguish false fingerprint, gather the object of overdrying or excessively wet fingerprint; Its internal circuit structure is simple, low in energy consumption, and moderate, is easy to produce and promote.
Description
Technical field
The utility model belongs to fingerprint recognition field, particularly relates to a kind of intelligent frequency-conversion 3D fingerprint sensor.
Background technology
Fingerprint recognition, namely refers to be differentiated by the details of more different fingerprint.Fingerprint identification technology relates to numerous subjects such as image procossing, pattern-recognition, computer vision, mathematical morphology, wavelet analysis.Because everyone fingerprint is different; be exactly between same people's ten refers to; fingerprint also has obvious difference; therefore fingerprint can be used for identity authentication, and all kinds fingerprint collecting equipment arises at the historic moment, but; because the orientation of each stamp is not exclusively the same, center of effort is different; the fingerprint collected has distortion in various degree, therefore usually can collect a large amount of fuzzy fingerprint, increases the difficulty of fingerprint recognition.Therefore, the characteristic sum that how correctly to take the fingerprint realizes correct fingerprint matching, is the key in fingerprint identification technology field.
But all volume is comparatively large usually for fingerprint capturer on the market at present, can not identify false fingerprint, cannot gather overdrying or excessively wet fingerprint, the more comprehensive fingerprint capturer of some function is expensive, and inner structure is complicated, be unfavorable for producing in enormous quantities, be unsuitable for promoting.
Utility model content
The object of the utility model embodiment is to provide a kind of intelligent frequency-conversion 3D fingerprint sensor, be intended to solve current fingerprint capturer volume large, the false fingerprint of None-identified or gather overdrying, cross wet fingerprint, and expensive, inner structure is complicated, is unfavorable for the problem produced in enormous quantities and promote.
The utility model embodiment realizes like this, a kind of intelligent frequency-conversion 3D fingerprint sensor, it is installed on the portable mobile communications device, and described intelligent frequency-conversion 3D fingerprint sensor comprises system level chip and is arranged on the metal edge frame of system level chip periphery, and described system level chip comprises:
Send fingerprint collecting signal to gather fingerprint, and generate the finger print acquisition module of 3D fingerprint simulating signal;
Be connected with described finger print acquisition module, described 3D fingerprint simulating signal converted to the analog-to-digital conversion module of digital signal;
Be connected with described analog-to-digital conversion module and it is controlled, and described digital signal is processed and identifies, the main control module of generating process and recognition result;
Be connected with described main control module, control the I/O control module of carrying out information interaction between described main control module and described portable mobile communication apparatus;
All be connected with described finger print acquisition module, analog-to-digital conversion module, main control module and I/O control module, and the power management module of electric energy is provided;
Described finger print acquisition module is the capacitance type fingerprint acquisition module being integrated with N number of silicon capacitive transducer;
Described main control module comprise by launch radio-frequency (RF) pulse signal gather fingerprint and frequency-conversion processing carried out to extract the line acquisition unit of qualified 3D fingerprint radiofrequency signal to this radiofrequency signal, described line acquisition unit sends radio-frequency (RF) pulse signal to finger, to gather fingerprint by described metal edge frame.
Preferably, electrify restoration circuit is connected with between described main control module and power management module.
Preferably, described electrify restoration circuit comprises a resistance and an electric capacity, and wherein, one end that one end of described resistance connects described power management module, the other end and described electric capacity is connected to described main control module, the other end ground connection of described electric capacity altogether.
Preferably, described main control module is single-chip microcomputer, and it also comprises can the low-power consumption oscillatory circuit of generated clock pulse.
Preferably, described power management module comprises low-voltage difference mu balanced circuit, and described low-voltage difference mu balanced circuit is connected with the power circuit of described portable mobile communication apparatus by the filter capacitor that an electric capacity is 1uF.
Preferably, described power management module also comprises the current limit circuit be connected with described voltage difference mu balanced circuit.
Preferably, described intelligent frequency-conversion 3D fingerprint sensor also comprise be integrated in described system level chip outside surface, as the SPI interface of the connectivity port between module each in described system level chip and described portable mobile communication apparatus.
Preferably, the described intelligent frequency-conversion 3D fingerprint sensor side of being shape body, its length is 8mm ~ 15mm, width is 8mm ~ 15mm, highly for 0.3mm ~ 0.8mm.
Preferably, described N >=128 × 128.
Preferably, described portable mobile communication apparatus is mobile phone, notebook computer or panel computer.
The intelligent frequency-conversion 3D fingerprint sensor that the utility model embodiment provides, by being highly integrated into system level chip, making its volume greatly reduce, can be arranged on various portable mobile communication apparatus; Gather fingerprint by capacitance type fingerprint acquisition module, make the deep enough finger skin corium of fingerprint collecting signal energy, reach identifying live fingerprint, distinguish the object of false fingerprint; Gather fingerprint by line acquisition unit emitting radio frequency signal, when making finger be in overdrying or cross wet condition, all can collect the fingerprint of complete display; By the integrated electrify restoration circuit in inside, ensure that the normal unlatching of described intelligent frequency-conversion 3D fingerprint sensor; By inside integrated low-voltage difference mu balanced circuit, ensure that the input voltage of described intelligent frequency-conversion 3D fingerprint sensor is lower and steady, period can be stable work, when also making described intelligent frequency-conversion 3D fingerprint sensor access different portable mobile communication apparatus simultaneously, only need additionally to access the filter effect that a filter capacitor just can reach high-quality again, when ensureing to access, voltage is level and smooth and stable; By the integrated low-power consumption oscillatory circuit in inside, make power consumption during described intelligent frequency-conversion 3D fingerprint sensor dormancy lower, and without the need to additionally connecting external crystal-controlled oscillation device or pulse clock again; By inner integrated current limiting circuit, ensure the security of described intelligent frequency-conversion 3D fingerprint sensor when electric current is too high; By adopting SPI interface, make described intelligent frequency-conversion 3D fingerprint sensor can access various peripheral components easily; Internal circuit configuration is simplified by making each functional parts modularization by inside is integrated, and moderate, be easy to produce and promote.
Accompanying drawing explanation
Fig. 1 is the structural representation when intelligent frequency-conversion 3D fingerprint sensor that provides is installed on portable mobile communication apparatus in the utility model is implemented;
Fig. 2 is the basic structure block diagram of the intelligent frequency-conversion 3D fingerprint sensor that the utility model embodiment provides;
Fig. 3 is the concrete structure block diagram of the intelligent frequency-conversion 3D fingerprint sensor that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the intelligent frequency-conversion 3D fingerprint sensor 100 that the utility model embodiment provides, it is arranged on portable mobile communication apparatus 200, and described intelligent frequency-conversion 3D fingerprint sensor comprises system level chip 101 and is arranged on the metal edge frame 102 of this system level chip 101 periphery.
As shown in Figures 2 and 3, described system level chip 101 comprises:
Send fingerprint collecting signal to gather fingerprint, and generate the finger print acquisition module 10 of 3D fingerprint simulating signal; Be connected with described finger print acquisition module 10, described 3D fingerprint simulating signal converted to the analog-to-digital conversion module 20 of digital signal; Be connected with described analog-to-digital conversion module 20 and it is controlled, and described digital signal is processed and identifies, the main control module 30 of generating process and recognition result; Be connected with described main control module 30 and described portable mobile communication apparatus 200, control the I/O control module 40 of carrying out information interaction between described main control module 30 and described portable mobile communication apparatus 200; All be connected with described finger print acquisition module 10, analog-to-digital conversion module 20, main control module 30 and I/O control module 40, and the power management module 50 of electric energy is provided; The capacitance type fingerprint acquisition module of described finger print acquisition module 10 N number of silicon capacitive transducer for internal height is integrated with; Described main control module 30 comprises and gathers fingerprint by launching radio-frequency (RF) pulse signal, and carries out frequency-conversion processing to extract the line acquisition unit 31 of qualified 3D fingerprint radiofrequency signal to this radiofrequency signal; Described line acquisition unit 31 sends radio-frequency (RF) pulse signal to finger, to gather fingerprint by described metal edge frame; Wherein, N >=128 × 128.
In a particular application, the input voltage of described system level chip is 1.8V ~ 3.3V; The upper surface of described intelligent frequency-conversion 3D fingerprint sensor is coated with special wear-resisting scratch resistance coating, and the hardness of this layer, up to 7H, can go through the pressing of more than 3,000 ten thousand times.
Described finger print acquisition module 10 is integrated with the capacitance type fingerprint acquisition module of at least 128 × 128 (by 128 × 128 array arrangements) individual silicon capacitive transducer for internal height, i.e. pixel >=128 × the 128pixels of fingerprint image that collects of described finger print acquisition module 10.In a particular application, the scan area>=7.04 × 7.04mm of described intelligent frequency-conversion 3D fingerprint sensor 100
2.The fingerprint collecting signal that capacitance type fingerprint acquisition module 10 sends can through the surface of finger and dead property skin layer, arrive the skin corium of finger skin, thus the false fingerprint of non-living body can be identified, and its fingerprint image quality gathered is better, imaging precision is high, size is less of, easy of integration various equipment, cost is low, and power consumption is very little, structure is simple, low price, highly sensitive, overload capacity is strong, dynamic response characteristic is good, to the strong adaptability of the mal-conditions such as high temperature, radiation, Qiang Zhen, can extensively promote.
Analog to digital converter 20, i.e. A/D converter, or be called for short ADC (Analog-to-Digital Converte), fingerprint analog-signal transitions is digital signal by it.In concrete application, described analog to digital converter 20 has reference data accurately, and its inside is integrated with analog quantity pre-process circuit, has ensured the conversion accuracy of ADC, in the present embodiment, the analog to digital conversion speed of described analog to digital converter 20 can reach ns (nanosecond) level.
Described main control module 30 comprises the line acquisition unit 31 gathering fingerprint by launching radio-frequency (RF) pulse signal, line acquisition unit 31 is the fingerprint collecting unit based on radio frequency sensor technology, it is by launching micro-radio-frequency (RF) pulse signal, the epidermal area that can penetrate finger goes detection to point the lines of nexine, then frequency conversion is passed through, filtering, amplifies and waits process to extract qualified radio-frequency information, obtain best fingerprint image.Therefore to overdrying, cross the discrimination of the impalpable finger prints such as wet finger, dirty finger more than 99.9%, false proof fingerprint ability is strong, and it responds to the skin corium pointed, and has fundamentally stopped the problem of false fingerprint.
As shown in Figure 2, electrify restoration circuit 60 is connected with between described main control module 30 and power management module 50, described electrify restoration circuit 60 comprises a resistance and an electric capacity, wherein, one end that one end of described resistance connects described power management module 50, the other end and described electric capacity is connected to described main control module 30, the other end ground connection of described electric capacity altogether.
The moment of described intelligent frequency-conversion 3D fingerprint sensor energising, the reset of whole system level chip can be completed voluntarily by described electrify restoration circuit 60.Powered on moment, the charging current of described electric capacity is maximum, electric capacity is equivalent to short circuit, now connecing altogether of described electric capacity and described resistance is held as low level, and system automatically resets, when now the voltage at electric capacity two ends reaches the supply voltage that described power management module 50 provides, described capacitance charging current is zero, electric capacity is equivalent to open circuit, and now described electric capacity and connecing altogether of described resistance are held as high level, and described intelligent frequency-conversion 3D fingerprint sensor starts normal operation.
Described main control module 30 is single-chip microcomputer, and it also comprises can the low-power consumption oscillatory circuit 31 of generated clock pulse.Described main control module 30 and low-power consumption oscillatory circuit 31 thereof are in the process at every turn powered on, owing to usually there is the filter capacitor that some amount of capacity do not wait in circuit loop, make the supply voltage value that affiliated singlechip chip is experienced between its power pins, rise gradually from low to high, this process duration is generally 1 ~ 100ms.In the voltage rise of single-chip microcomputer to being applicable to scope that its low-power consumption oscillatory circuit 31 runs and after settling out, its low-power consumption oscillatory circuit 31 starts to start, specifically comprise biased, starting of oscillation, lock and stablize several process, this process duration is 1 ~ 50ms.
Described power management module 50 comprises low-voltage difference mu balanced circuit 51, and described low-voltage difference mu balanced circuit 51 is that the filter capacitor of 1uF is connected with the power circuit of described portable mobile communication apparatus 200 by an electric capacity.In a particular application, the input voltage of this low-voltage difference mu balanced circuit 51 is 3.3V.
Described low-voltage difference mu balanced circuit 51 is, by the basic low-voltage difference mu balanced circuit of series connection Correctional tube, two sample resistances and comparison amplifier composition.Sampling voltage is added in the in-phase input end of comparison amplifier, and compared with the reference voltage being added in inverting input, both differences control the pressure drop of series connection Correctional tube after comparison amplifier amplifies, thus regulated output voltage; When output voltage reduces, the difference of reference voltage and sampling voltage increases, and the drive current that comparison amplifier exports increases, and the pressure drop of series connection Correctional tube reduces, thus output voltage is raised; Contrary, if output voltage exceedes required setting value, the front wheel driving electric current that comparison amplifier exports reduces, thus output voltage is reduced.In power supply process, output voltage corrects and carries out continuously, and regulation time is only subject to the restriction of comparison amplifier and output transistor loop reaction velocity.It is low that this circuit can ensure that the input voltage of described intelligent frequency-conversion 3D fingerprint sensor can be tried one's best, make described intelligent frequency-conversion 3D fingerprint sensor 100 can in wider input voltage range steady operation.Therefore, the filter capacitor that to need by an electric capacity be 1uF is connected with the power circuit of described portable mobile communication apparatus 200, just can realize the filter effect of high-quality, enormously simplify the design difficulty of circuit, reduce cost simultaneously.The reason introducing filter capacitor is the voltage that will obtain smooth steady, because the voltage at electric capacity two ends can not suddenly change, so it can suppress the fluctuation of voltage, makes voltage become steadily smooth.The Main Function of filter capacitor has two: one to be that the interchange between removal devices is RF-coupled; Two are, and the spike of moment on the power end of device, burr shorted to earth are fallen.
Described power management module 50 also comprises the current limit circuit 52 be connected with described low-voltage difference mu balanced circuit 51.Described current limit circuit 52 is, the basic current limit circuit consisted of a comparison amplifier and a current-limiting resistance.It can play current foldback circuit effect to described intelligent frequency-conversion 3D fingerprint sensor.When the electric current overrate that low-voltage difference mu balanced circuit 51 exports, described current limit circuit 52 limits its Correctional tube emitter current and is fixed on a certain numerical value or reduces rapidly, thus protects its Correctional tube can not burn out because electric current is excessive.
Described intelligent frequency-conversion 3D fingerprint sensor 100 also comprise be integrated in described system level chip 101 outside surface, as the SPI interface 70 of the connectivity port in described system level chip 101 between each module and described portable mobile communication apparatus 200.Described SPI (Serial Peripheral Interface) interface 70 is a kind of synchronous serial Peripheral Interfaces, and it can make described system level chip 100 and described portable mobile communication apparatus 200 carry out in a serial fashion communicating to exchange information.
As shown in Figure 1, described intelligent frequency-conversion 3D fingerprint sensor 100 side of being shape body, its length is 8mm ~ 15mm, width is 8mm ~ 15mm, highly for 0.3mm ~ 0.8mm.
In a preferred embodiment, the length of described intelligent frequency-conversion 3D fingerprint sensor 100 is respectively 10mm, 10mm, 0.6mm.Due to its small volume, thus going for great majority has on the mini-plant of requirement size.In a particular application, described portable mobile communication apparatus 200 can be mobile phone, notebook computer or panel computer etc.
Described intelligent frequency-conversion 3D fingerprint sensor 100 is utilized to gather the concrete principle of fingerprint to be: after finger is placed on described intelligent frequency-conversion 3D fingerprint sensor 100, described intelligent frequency-conversion 3D fingerprint sensor 100 can detect the electric field intensity on described metal edge frame and finger skin respectively by its line acquisition unit 31 and finger print acquisition module 10, and this electric field intensity is converted to the fingerprint collecting signal being loaded with voltage signal, then the voltage amplifier voltage signal that each fingerprint collecting unit in described line acquisition unit 31 and finger print acquisition module 10 produces being outputted in order described line acquisition unit 31 and finger print acquisition module 10 inside makes the intensity of described voltage signal increase, then by described analog to digital converter 20, described voltage signal is converted to 8 position digital signals.
Intelligent frequency-conversion 3D fingerprint sensor of the present utility model 100 is by adopting the mode of line acquisition unit 31 based on radio-frequency fingerprint recognition technology and capacitance type fingerprint acquisition module 10 simultaneously; gather fingerprint; make described intelligent frequency-conversion 3D fingerprint sensor 100 can detect and obtain fingerprint and the finger movement of human body exactly under any environmental baseline, the movement locus that described intelligent frequency-conversion 3D fingerprint sensor 100 can be made to have best finger print recognition performance and finger by which obtains performance.
Intelligent frequency-conversion 3D fingerprint sensor 100 of the present utility model also follows IEC61000-4-2 level electrostatic prevention standard, the pressing more than 3,000 ten thousand times can be experienced and do not damage, it is also applicable to area cold or extremely hot especially especially, temperature range of operation is-20 DEG C ~ 70 DEG C, still picture quality can be ensured when volume drops to very little, and with low cost, can be widely used in the equipment of various small size or small size.
The intelligent frequency-conversion 3D fingerprint sensor that the utility model embodiment provides, by being highly integrated into system level chip, making its volume greatly reduce, can be arranged on various portable mobile communication apparatus; Gather fingerprint by capacitance type fingerprint acquisition module, make the deep enough finger skin corium of fingerprint collecting signal energy, reach identifying live fingerprint, distinguish the object of false fingerprint; Gather fingerprint by line acquisition unit emitting radio frequency signal, when making finger be in overdrying or cross wet condition, all can collect the fingerprint of complete display; By the integrated electrify restoration circuit in inside, ensure that the normal unlatching of described intelligent frequency-conversion 3D fingerprint sensor; Ensure that the input voltage of described intelligent frequency-conversion 3D fingerprint sensor is lower and steady by the integrated low-voltage in inside difference mu balanced circuit, period can be stable work, when also making described intelligent frequency-conversion 3D fingerprint sensor access different portable mobile communication apparatus simultaneously, only need additionally to access the filter effect that a filter capacitor just can reach high-quality again, when ensureing to access, voltage is level and smooth and stable; By the integrated low-power consumption oscillatory circuit in inside, make power consumption during described intelligent frequency-conversion 3D fingerprint sensor dormancy lower, and without the need to additionally connecting external crystal-controlled oscillation device or pulse clock again; By inner integrated current limiting circuit, ensure the security of described intelligent frequency-conversion 3D fingerprint sensor when electric current is too high; By adopting SPI interface, make described intelligent frequency-conversion 3D fingerprint sensor can access various peripheral components easily; Internal circuit configuration is simplified by making each functional parts modularization by inside is integrated, and moderate, be easy to produce and promote.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an intelligent frequency-conversion 3D fingerprint sensor, it is installed on the portable mobile communications device, it is characterized in that, described intelligent frequency-conversion 3D fingerprint sensor comprises system level chip and is arranged on the metal edge frame of system level chip periphery, and described system level chip comprises:
Send fingerprint collecting signal to gather fingerprint, and generate the finger print acquisition module of 3D fingerprint simulating signal;
Be connected with described finger print acquisition module, described 3D fingerprint simulating signal converted to the analog-to-digital conversion module of digital signal;
Be connected with described analog-to-digital conversion module and it is controlled, and described digital signal is processed and identifies, the main control module of generating process and recognition result;
Be connected with described main control module, control the I/O control module of carrying out information interaction between described main control module and described portable mobile communication apparatus;
All be connected with described finger print acquisition module, analog-to-digital conversion module, main control module and I/O control module, and the power management module of electric energy is provided;
Described finger print acquisition module is the capacitance type fingerprint acquisition module being integrated with N number of silicon capacitive transducer;
Described main control module comprise by launch radio-frequency (RF) pulse signal gather fingerprint and frequency-conversion processing carried out to extract the line acquisition unit of qualified 3D fingerprint radiofrequency signal to this radiofrequency signal, described line acquisition unit sends radio-frequency (RF) pulse signal to finger, to gather fingerprint by described metal edge frame.
2. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, is characterized in that, be connected with electrify restoration circuit between described main control module and power management module.
3. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 2, it is characterized in that, described electrify restoration circuit comprises a resistance and an electric capacity, wherein, one end that one end of described resistance connects described power management module, the other end and described electric capacity is connected to described main control module, the other end ground connection of described electric capacity altogether.
4. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, it is characterized in that, described main control module is single-chip microcomputer, and it also comprises can the low-power consumption oscillatory circuit of generated clock pulse.
5. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, it is characterized in that, described power management module comprises low-voltage difference mu balanced circuit, and described low-voltage difference mu balanced circuit is connected with the power circuit of described portable mobile communication apparatus by the filter capacitor that an electric capacity is 1uF.
6. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 5, it is characterized in that, described power management module also comprises the current limit circuit be connected with described voltage difference mu balanced circuit.
7. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, it is characterized in that, intelligent frequency-conversion 3D fingerprint sensor also comprise be integrated in described system level chip outside surface, as the SPI interface of the connectivity port between module each in described system level chip and described portable mobile communication apparatus.
8. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, is characterized in that, the described intelligent frequency-conversion 3D fingerprint sensor side of being shape body, its length is 8mm ~ 15mm, width is 8mm ~ 15mm, is highly 0.3mm ~ 0.8mm.
9. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, is characterized in that, described N >=128 × 128.
10. intelligent frequency-conversion 3D fingerprint sensor as claimed in claim 1, it is characterized in that, described portable mobile communication apparatus is mobile phone, notebook computer or panel computer.
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| CN201520460930.5U CN204731798U (en) | 2015-06-30 | 2015-06-30 | A kind of intelligent frequency-conversion 3D fingerprint sensor |
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| CN201520460930.5U CN204731798U (en) | 2015-06-30 | 2015-06-30 | A kind of intelligent frequency-conversion 3D fingerprint sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106022058A (en) * | 2016-05-27 | 2016-10-12 | 广东欧珀移动通信有限公司 | Fingerprint unlocking method and terminal |
| CN106203366A (en) * | 2016-07-14 | 2016-12-07 | 浙江赢视科技有限公司 | Capacitance type fingerprint identification device and recognition methods thereof |
| CN106228123A (en) * | 2016-07-14 | 2016-12-14 | 浙江赢视科技有限公司 | The Fingerprint Identification Unit of automatic adjustment process and recognition methods thereof |
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2015
- 2015-06-30 CN CN201520460930.5U patent/CN204731798U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106022058A (en) * | 2016-05-27 | 2016-10-12 | 广东欧珀移动通信有限公司 | Fingerprint unlocking method and terminal |
| CN106203366A (en) * | 2016-07-14 | 2016-12-07 | 浙江赢视科技有限公司 | Capacitance type fingerprint identification device and recognition methods thereof |
| CN106228123A (en) * | 2016-07-14 | 2016-12-14 | 浙江赢视科技有限公司 | The Fingerprint Identification Unit of automatic adjustment process and recognition methods thereof |
| CN106228123B (en) * | 2016-07-14 | 2019-02-12 | 浙江赢视科技有限公司 | The Fingerprint Identification Unit of adjust automatically processing and its recognition methods |
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Address after: No.133, Yishang Avenue, economic and Technological Development Zone, Yichun City, Jiangxi Province Patentee after: Jiangxi Zhixin Intelligent Technology Co., Ltd Address before: 1007 room 518000, Tsinghua Information Port research building, north of Nanshan District hi tech Industrial Park, Shenzhen, Guangdong, China Patentee before: SHENZHEN FINGERCHIP INTELLIGENT TECHNOLOGY Co.,Ltd. |