CN104598893A - Fingerprint recognition system, running method of fingerprint recognition system and electronic product - Google Patents
Fingerprint recognition system, running method of fingerprint recognition system and electronic product Download PDFInfo
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- CN104598893A CN104598893A CN201510056015.4A CN201510056015A CN104598893A CN 104598893 A CN104598893 A CN 104598893A CN 201510056015 A CN201510056015 A CN 201510056015A CN 104598893 A CN104598893 A CN 104598893A
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- fingerprint recognition
- recognition system
- fingerprint
- light source
- identification sensor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Abstract
The invention provides a fingerprint recognition system, a running method of the fingerprint recognition system and an electronic product. The fingerprint recognition system comprises a fingerprint recognition sensor, a light source and a control unit, wherein the light source comprises a breathing lamp, and therefore the fingerprint recognition system can achieve the breathing indication function of the breathing lamp while achieving the fingerprint recognition.
Description
Technical field
The present invention relates to fingerprint recognition field, particularly relate to a kind of fingerprint recognition system, the operation method of fingerprint recognition system and electronic product.
Background technology
Fingerprint identification technology is the fingerprint image being collected human body by fingerprint sensor, then compares with the existing fingerprint imaging information in system, whether carrys out correct judgment, and then realize the technology of identification.Due to the convenience that it uses, and the uniqueness of somatic fingerprint, fingerprint identification technology is widely used in every field, such as the field of safety check such as public security bureau, customs, the gate control system of building, and the consumer product area such as PC and mobile phone etc.
Fingerprint identification technology has multiple concrete methods of realizing.Wherein, optical finger print recognition methods generally includes: utilize light source to send light beam, light beam irradiation pressing finger print on the transparent substrate; The reflection ray of fingerprint passes to imageing sensor, generates fingerprint image data by imageing sensor, and carries out fingerprint recognition to fingerprint image data.
In prior art, the function Shortcomings of fingerprint recognition system, utilization is restricted.
Summary of the invention
The problem that the present invention solves is to provide a kind of fingerprint recognition system, the operation method of fingerprint recognition system and electronic product, to improve the function of fingerprint recognition system, the operation strategies of expansion fingerprint recognition system, and expand the operation method of fingerprint recognition system, thus correspondingly improve the function with the electronic product of described fingerprint recognition system.
For solving the problem, the invention provides a kind of fingerprint recognition system, comprising:
Fingerprint Identification sensor;
Light source, described light source comprises breath light;
Control module.
Optionally, described fingerprint recognition system also comprises protective substrate, and described fingerprint Identification sensor is that TFT drives fingerprint Identification sensor, and described fingerprint Identification sensor is between described protective substrate and described light source.
Optionally, described control module comprises Power Management Unit and Date Conversion Unit, and described Power Management Unit is electrically connected described light source and described fingerprint Identification sensor, and described Date Conversion Unit is electrically connected described fingerprint Identification sensor.
Optionally, described fingerprint recognition system also comprises the Power Management Unit and Date Conversion Unit that are electrically connected described control module, and described Power Management Unit is electrically connected described light source, and described Date Conversion Unit is electrically connected described fingerprint Identification sensor.
Optionally, described Power Management Unit and Date Conversion Unit are integrated in same unit.
Optionally, described light source has one or more LED, and LED described at least one is described breath light.
For solving the problem, present invention also offers a kind of operation method of fingerprint recognition system, described fingerprint recognition system is fingerprint recognition system as above, and described operation method comprises:
When fingerprint Identification sensor realizes fingerprint recognition, described control module controls described light source to carry out growing bright luminescence or strobe light emission;
When fingerprint recognition system carries out breathing display, the described breath light that described control module controls described light source carries out type of respiration luminescence, and described control module closes described fingerprint Identification sensor.
Optionally, by controlling the pulse waveform of the pulse voltage size of described light source, pulse voltage dutycycle or pulse voltage, described breath light is made to carry out type of respiration luminescence.
For solving the problem, present invention also offers a kind of electronic product, described electronic product comprises fingerprint recognition system as above.
Optionally, described electronic product is mobile phone, computer, electronic access or vehicle electronics terminal.
Compared with prior art, technical scheme of the present invention has the following advantages:
In technical scheme of the present invention, breath light is set in the light source of fingerprint recognition system, thus enables described fingerprint recognition system while realizing fingerprint recognition, realize the breathing deixis of breath light.Be more importantly, owing to having breath light, when fingerprint recognition system does not carry out fingerprint recognition, can be shown it by making breath light carry out type of respiration luminescence to user and be in which kind of state, thus first can close fingerprint Identification sensor, reach the object of saving power supply and improving fingerprint Identification sensor term of life.And, breath light not only can indicate the duty of fingerprint Identification sensor, also (this equipment can be electronic product can to indicate to user the equipment using fingerprint recognition system, such as mobile phone or computer etc.) corresponding working state, and when user uses fingerprint Identification sensor, then reopen fingerprint Identification sensor.In addition, breath light in this fingerprint recognition system light source also can be opened when indicating fingerprint Identification sensor to use, close when indicating fingerprint Identification sensor not use, namely fingerprint recognition system can be whole as breath light, thus the using function of fingerprint recognition system itself is increased, expand the operation strategies of fingerprint recognition system.
Further, fingerprint Identification sensor and the discrete device of breath light two are integrated in fingerprint recognition system, decrease device count, and can light source be saved.
Accompanying drawing explanation
Fig. 1 is the fingerprint recognition system structural representation that the embodiment of the present invention provides;
Fig. 2 is fingerprint sensor construction schematic diagram in fingerprint recognition system shown in Fig. 1;
Fig. 3 is the electrical block diagram in fingerprint recognition system shown in Fig. 1.
Embodiment
As described in background, there is functional defect in existing fingerprint recognition system.Usual existing fingerprint recognition system comprises light source and fingerprint Identification sensor, the light that light source sends is after finger print reflection, received by fingerprint Identification sensor, fingerprint Identification sensor forms fingerprint signal according to the reflection ray received, in the reading of formation control unit, obtain corresponding fingerprint image for fingerprint recognition.But under many circumstances, fingerprint recognition system is in running order for a long time, and fingerprint Identification sensor is always in running order, not only wastes electricity, and makes the term of life of fingerprint Identification sensor shorten.In addition, also there is user and be difficult to know whether fingerprint recognition system can carry out the problem of fingerprint recognition immediately in existing fingerprint recognition system.
For this reason, the invention provides a kind of new fingerprint recognition system, described fingerprint recognition system comprises fingerprint Identification sensor, light source and control module, and wherein said light source comprises breath light.Because described light source comprises breath light, therefore, described fingerprint recognition system can realize the breathing deixis of breath light simultaneously.Be more importantly, owing to having breath light, not carrying out fingerprint recognition in fingerprint recognition system is, can be shown it by making breath light carry out type of respiration luminescence to user and be in holding state, thus first can close fingerprint Identification sensor, reach the object of saving power supply and improving fingerprint Identification sensor term of life, when user uses, then reopen fingerprint Identification sensor.
In addition, fingerprint Identification sensor and the discrete device of breath light two are integrated in fingerprint recognition system, decrease device count, and can light source be saved.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.
The embodiment of the present invention provides a kind of fingerprint recognition system, incorporated by reference to referring to figs. 1 to Fig. 3.
Please refer to Fig. 1, described fingerprint recognition system comprises fingerprint Identification sensor 140, light source 130 (Lightsource) and control module 110.Wherein, described light source 130 comprises breath light.In the present embodiment, described fingerprint recognition system also comprises light guide plate (light guide) 131, and the light that light source 130 sends is dispersed by light guide plate 131.Described fingerprint recognition system also comprises protective substrate 150, and described fingerprint Identification sensor 140 is between described protective substrate 150 and described light source 130.Simultaneously, described fingerprint recognition system also comprises processing unit 120, and (processing unit 120 comprises Power Management Unit and Date Conversion Unit, please refer to Fig. 3), and processing unit 120 is electrically connected respectively with fingerprint Identification sensor 140, light source 130 and control module 110.
Please refer to Fig. 2, described fingerprint Identification sensor 140 is TFT driving fingerprint Identification sensor, and Fig. 2 is the structural representation that TFT drives fingerprint Identification sensor.
The fingerprint Identification sensor utilizing TFT to drive imageing sensor to be formed is called that TFT drives fingerprint Identification sensor.And TFT drives imageing sensor to refer to the imageing sensor of the thin film transistor (TFT) (Thin FilmTransistor, TFT) based on field effect.TFT drives imageing sensor to be different from conventional CMOS image sensor.Conventional CMOS image sensor is by the impact of wafer size, and TFT drives imageing sensor to be by the thin film deposition of different layers on such as glass plate (thickness of glass plate can be less than 1mm), therefore can make arbitrary size.Further, TFT drives imageing sensor can accomplish very thin, and quality is light again, is conducive to being integrated in other equipment, also easily makes portable product, can be applicable to the every field such as payment terminal, consumer digital product and car terminals.And TFT drives imageing sensor to be used in fingerprint recognition field.
Fingerprint Identification sensor (i.e. fingerprint Identification sensor 140) is driven to comprise bottom glass substrate 141, top glass substrates 142 and a series of light activated elements between them please continue to refer to Fig. 2, TFT.These light activated elements comprise multiple pixel (pixel) 143, and pixel 143 can comprise photodiode (photodiode) usually, and photodiode is the photosensitive part of pixel 143, and photodiode can adopt TFT as switch.Pixel 143 to be embarked on journey or address wire in column (address line) links together by parallel.(in such as the present embodiment, fingerprint image sensing is carried out) when carrying out image sensing, give the address wire making alive of wherein one-row pixels 143, be connected to the TFT switch opens in that a line, the electric signal in photodiode reads via data line (data line).
Please continue to refer to Fig. 2, (light is as shown in arrow obliquely in Fig. 2 for the dispersed light that light source 130 produces, do not mark) through the gap between pixel 143, and be irradiated on the finger that is placed on protective substrate 150 through protective substrate 150, peak (ridge) 161 and paddy (vally) 162 pairs of irradiation light of finger print form discrepant reflection, (reflection ray is as shown in arrow obliquely in Fig. 2 for reflection ray, do not mark) be irradiated to TFT driving image sensor pixel 143 surface through protective substrate 150, light signal is read out, fingerprint recognition can be carried out.
In the present embodiment, described control module 110 can be micro computer, such as CPU.
In the present embodiment, breath light refers to that the light of breath light is under the control of control module 110, completes by bright to dark or by secretly to the bright process that gradually changes, perceptual image is breathing.Breath light itself can be specifically fluorescent light or LED.The use of breath light can make whole system power saving more.And the light source 130 of system comprises breath light, also can make whole fingerprint recognition system except carrying out fingerprint identification function, play other function, such as the function of reminder announced user corresponding information.
In the present embodiment, the material of protective substrate 150 can organic material substrate, also can be inorganic material substrate, such as, be specifically as follows fluorinated plastic optical fiber (Plastic optical fiber) guide plate or anti-fouling glass substrate etc.
Please refer to Fig. 3, show the circuit structure of fingerprint recognition system.As can see from Figure 3, processing unit 120 comprises the Power Management Unit and Date Conversion Unit that are electrically connected described control module 110, described Power Management Unit is electrically connected described light source 130, and described Date Conversion Unit is electrically connected described fingerprint Identification sensor 140.Namely described Power Management Unit and Date Conversion Unit are integrated in same unit, and this mode can simplify the circuit structure of whole system.
It should be noted that, in other embodiments of the invention, described control module can directly comprise Power Management Unit and Date Conversion Unit, and described Power Management Unit is still electrically connected described light source, and described Date Conversion Unit is still electrically connected described fingerprint Identification sensor.That is, Power Management Unit and Date Conversion Unit can directly be integrated in described control module.This mode can make the one-piece construction of fingerprint recognition system more simple, thus makes fingerprint recognition system volume less, more easy of integration in corresponding electronic product.
It should be noted that, in other embodiments of the invention, described light source can have multiple lamp, and described luminaire body can be LED or fluorescent light.In other embodiments, can using above for one or two in multiple described lamp as described breath light.The present invention is not construed as limiting this.
In the fingerprint recognition system that the present embodiment provides, because described light source 130 comprises breath light, therefore, described fingerprint recognition system can realize the breathing deixis of breath light simultaneously.Be more importantly, owing to having breath light, not carrying out fingerprint recognition in fingerprint recognition system is, can be shown it by making breath light carry out type of respiration luminescence to user and be in holding state, thus can first close fingerprint Identification sensor 140, reach the object of saving power supply and improving fingerprint Identification sensor 140 term of life.
In the fingerprint recognition system that the present embodiment provides, described breath light not only can indicate the duty of fingerprint Identification sensor, also (this equipment can be electronic product can to indicate to user the equipment using fingerprint recognition system, such as mobile phone or computer etc.) other duty of correspondence, other duty described can comprise the duty irrelevant with fingerprint recognition.Such as when described equipment is the mobile phone with this fingerprint recognition system, whether described breath light can also show user mobile phone has missed call or unread short messages etc.
In the fingerprint recognition system that the present embodiment provides, owing to there is breath light in light source, therefore, when fingerprint recognition system, in a period of time, (described a period of time can be 30 seconds, 60 seconds or 90 seconds etc.) when not receiving the signal of any finger print, automatic closedown fingerprint Identification sensor, thus save power supply.Meanwhile, now can with specific breath light signal inform user now fingerprint Identification sensor be in closed condition.And when user will reuse fingerprint Identification sensor, fingerprint Identification sensor can be reopened by arranging a capacitive transducer in fingerprint recognition system, certainly, also a mechanical key can be set in fingerprint recognition system, reopen fingerprint Identification sensor.And, after opening fingerprint Identification sensor, corresponding breath light signal can close or change, thus overcomes user in existing fingerprint recognition system and be difficult to know whether fingerprint recognition system can carry out the problem of fingerprint recognition immediately, fingerprint recognition system is used more flexible.
In the fingerprint recognition system that the present embodiment provides, the breath light in light source 130 also can be opened when indicating fingerprint Identification sensor to use, and also can close when indicating fingerprint Identification sensor not use.Namely can using whole for fingerprint recognition system as breath light, thus the using function of fingerprint recognition system itself be increased, expand the operation strategies of fingerprint recognition system.
In addition, fingerprint Identification sensor and the discrete device of breath light two are integrated in fingerprint recognition system, decrease device count, save the quantity of light source.
Another embodiment of the present invention additionally provides a kind of operation method of fingerprint recognition system, the fingerprint recognition system that described fingerprint recognition system can provide for previous embodiment.
Described operation method comprises: when fingerprint Identification sensor realizes fingerprint recognition, and described control module controls described light source to carry out growing bright luminescence or strobe light emission; When fingerprint recognition system carries out breathing display, the described breath light that described control module controls described light source carries out type of respiration luminescence, and described control module closes described fingerprint Identification sensor.Specifically can, by the pulse waveform of the pulse voltage size of the described light source of control, pulse voltage dutycycle or pulse voltage, described breath light be made to carry out type of respiration luminescence.
Incorporated by reference to reference to figure 3, time described control module receives fingerprint recognition instruction, to described Power Management Unit issue an order, described Power Management Unit provides power supply (power) for fingerprint recognition system and light source, and, the data transformations of fingerprint recognition collection is become the discernible information of described control module by described Date Conversion Unit, conveys to described control module process and carries out fingerprint recognition.
Specifically can use example with reference to following two:
Example one, is directly set to breath light by the light source of fingerprint recognition system, but this breath light still can be otherwise luminous.
When described control module instruction fingerprint recognition state time, described Power Management Unit is that breath light provides support the power supply signal of fingerprint recognition, thus makes breath light carry out the luminescence of continuous print or stroboscopic.Simultaneously, described Power Management Unit provides power supply for fingerprint Identification sensor, fingerprint recognition data are read by described Date Conversion Unit, and described fingerprint recognition data are converted to the accessible signal of described control module and output to described control module by described Date Conversion Unit, complete fingerprint identification function.
When described control module does not indicate fingerprint recognition state time, when being namely in non-fingerprint recognition state, described control module points out described Power Management Unit only to power to breath light, and according to different states, provides different potential pulses.Described state can be different according to the difference of this fingerprint recognition system of utilization.As computer dormancy, mobile phone has inform by short message, or have incoming call etc. to the potential pulse of breath light or electric current, by pulse-length modulation (the pulse widthmodulation of pulse strength (intensity) and pulse voltage, PWM) change, the intensity of modulation breath light and variation rule, indicate different information to user.
Example two, light source, except having the breath light required for fingerprint recognition, can also have other lamp multiple, and other lamp can show various different colours simultaneously.Due to the lamp of multiple different colours can be had, therefore, can adopt using the lamp of different colours as breath light, or using the lamp of different colours as long bright light and stroboscopic lamp, to provide more how different signal prompts.
When described control module instruction fingerprint recognition state time, the LED that described control module controls to only have fingerprint recognition to need to use is bright, and other lamps are closed.
When described control module does not indicate fingerprint recognition state time, when being namely in non-fingerprint recognition state, described control module indicates described Power Management Unit to provide power supply for some or all of lamp wherein, and the bright or dark change of different colours lamp can be modulated by the dutycycle of control voltage pulse or electric current, realize the brightness change of flicker or different frequency, realize breath light function.Wherein, described Power Management Unit can produce the potential pulse of any dutycycle, also can produce the voltage of random waveform to control the bright dark state of each lamp of light source, thus make each lamp realize the flicker of different frequency or the change of light intensity, and can modulate single or multiple LED.
In the application method that the present embodiment provides, by controlling the bright dark state of each lamp in described fingerprint recognition system, reaching the object of saving power supply, and making described fingerprint recognition system have various prompting function.
Another embodiment of the present invention also provides a kind of electronic product, and described electronic product comprises the fingerprint recognition system that this instructions previous embodiment provides.Therefore, described electronic product has the various functions of above-mentioned fingerprint recognition system.
In the present embodiment, described electronic product can be mobile phone, computer, electronic access or vehicle electronics terminal.In the process of the above-mentioned system of fingerprints of concrete utilization, if electronic product is mobile phone or computer, then when mobile phone or computer are in dormant state time, described control module can be in inertia or low power consumpting state, and namely mobile phone or computer can have the pattern of use and dormancy.Time mobile phone or computer do not use, manually or automatically can detect and make mobile phone or computer be in dormant state, thus save electricity, and be easy to wake up.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (10)
1. a fingerprint recognition system, is characterized in that, comprising:
Fingerprint Identification sensor;
Light source, described light source comprises breath light;
Control module.
2. fingerprint recognition system as claimed in claim 1; it is characterized in that; described fingerprint recognition system also comprises protective substrate, and described fingerprint Identification sensor is that TFT drives fingerprint Identification sensor, and described fingerprint Identification sensor is between described protective substrate and described light source.
3. fingerprint recognition system as claimed in claim 1 or 2, it is characterized in that, described control module comprises Power Management Unit and Date Conversion Unit; Described Power Management Unit is electrically connected described light source and fingerprint Identification sensor; Described Date Conversion Unit is electrically connected described fingerprint Identification sensor.
4. fingerprint recognition system as claimed in claim 1 or 2, it is characterized in that, described fingerprint recognition system also comprises the Power Management Unit and Date Conversion Unit that are electrically connected described control module, described Power Management Unit is electrically connected described light source, and described Date Conversion Unit is electrically connected described fingerprint Identification sensor.
5. fingerprint recognition system as claimed in claim 4, it is characterized in that, described Power Management Unit and Date Conversion Unit are integrated in same unit.
6. fingerprint recognition system as claimed in claim 1 or 2, it is characterized in that, described light source has one or more LED, and LED described at least one is described breath light.
7. an operation method for fingerprint recognition system, is characterized in that, described fingerprint recognition system comprises for the fingerprint recognition system as described in claim 1 to 6 any one, described operation method:
When fingerprint Identification sensor realizes fingerprint recognition, described control module controls described light source to carry out growing bright luminescence or strobe light emission;
When fingerprint recognition system carries out breathing display, the described breath light that described control module controls described light source carries out type of respiration luminescence, and described control module closes described fingerprint Identification sensor.
8. operation method as claimed in claim 7, is characterized in that, by controlling the pulse waveform of the pulse voltage size of described light source, pulse voltage dutycycle or pulse voltage, makes described breath light carry out type of respiration luminescence.
9. an electronic product, is characterized in that, described electronic product comprises the fingerprint recognition system as described in claim 1 to 6 any one.
10. electronic product as claimed in claim 9, it is characterized in that, described electronic product is mobile phone, computer, electronic access or vehicle electronics terminal.
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