Invention content
The purpose of the present invention is to provide a kind of touch-control, fingerprint and the three-in-one identifying system of pressure and mobile terminals, with solutionTouch-control identification certainly existing in the prior art, Pressure identification, fingerprint recognition are to be realized by different hardware plans by lead to work(Consumption is big, number of devices is more, occupies the problem of structure space.
The present invention provides a kind of touch-control, fingerprint and the three-in-one identifying systems of pressure, including：AISC chips, transmitting pole plateWith receive pole plate, the transmitting pole plate is used to emit ultrasonic signal, and the ultrasonic signal of transmitting is handled after digital reflex by describedIt receives pole plate to receive, described to receive ultrasound signal transmission that pole plate receives to the AISC chips, the AISC chips are by instituteThe ultrasonic signal for stating the reception for receiving pole plate is converted into digital signal, while doing data processing, obtains fingerprint image, touches and sitMark, pressure value and human body artery pulse data.
Further, the reception pole plate includes multiple independent receiving units.
Further, the transmitting pole plate includes multiple is stacked and piezoelectric membrane in parallel.
Further, the transmitting pole plate further includes the multiple electrodes for applying driving voltage to piezoelectric membrane.
Further, the polarization direction of multiple piezoelectric membranes being stacked of the ultrasonic wave emission layer is identical,And separation layer is set between two neighboring piezoelectric membrane, each electrode acts only on a piezoelectric membrane.
The present invention also provides a kind of electronic equipment, including touch-control, fingerprint and pressure described in any technical solutionThree-in-one identifying system.
Compared with prior art, beneficial effects of the present invention are：
Touch-control, fingerprint and the three-in-one identifying system of pressure provided by the invention pass through the principle of ultrasonic scanning, ultrasonic waveLaunched by the emitter, the reception pole plate receives the reflected ultrasonic signal of finger, the asic chip handleThe signal for receiving pole plate is converted into digital signal, while doing data processing, obtains data；It, can by the processing to dataTo obtain, fingerprint image, touch coordinate, pressure value and human body artery pulse data, to realize finger scan, touch recognitionInduction and pressure touch identification induction, while realizing vivo identification.Touch-control, fingerprint and the three-in-one identifying system of pressure of the present inventionHigh integration realizes multi-functional unification, can be mounted in the mobile terminal devices such as mobile phone, tablet, vehicle-mounted control device and profession is wholeIn end equipment.
Specific implementation mode
Following for that can be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and haveThe present invention is further described in detail in body embodiment.It should be noted that in the absence of conflict, the application'sFeature in embodiment and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used alsoTo be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described belowSpecific embodiment limitation.
Referring to Fig. 1 descriptions, the touch-control, fingerprint and the three-in-one identification of pressure are according to some embodiments of the inventionSystem and mobile terminal.
As shown in Figure 1, the present invention provides a kind of touch-control, fingerprint and the three-in-one identifying systems of pressure, including：AISC chips3, emit pole plate 2 and receive pole plate 1, the transmitting pole plate 2 is for emitting ultrasonic signal, and the ultrasonic signal of transmitting is through fingerIt is received by the reception pole plate 1 after reflection, the ultrasound signal transmission for receiving the reception of pole plate 1 to the AISC chips 3, instituteIt states AISC chips 3 and the ultrasonic signal of the reception for receiving pole plate 1 is converted into digital signal, while doing data processing, obtainTo fingerprint image, touch coordinate, pressure value and human body artery pulse data.
A kind of touch-control, fingerprint and the three-in-one identifying system of pressure provided by the invention are surpassed by the principle of ultrasonic scanningSound wave is launched by the emitter, and the reception pole plate 1 receives the reflected ultrasonic signal of finger, the ASIC coresThe signal for receiving pole plate 1 is converted into digital signal by piece, while doing data processing, obtains data；Pass through the place to dataReason, can obtain following four data, A：Fingerprint image；B：Touch coordinate (X, Y)；C：Pressure value (Y)；D：Human body artery arteries and veinsData are rushed, and judge whether it is live finger (Y/N) by human body artery pulse data.Fingerprint can be realized by above-mentioned dataScanning, touch recognition induction and pressure touch identification induction, while realizing vivo identification, wherein vivo identification refers to distinguishing true manFinger and prosthetic finger.
Wherein, the process of the finger scan, touch recognition induction, pressure touch identification induction and vivo identification is specificFor：
1, fingerprint recognition
The fingerprint image arrived by ultrasonic scanning, can compare out whether fingerprint matches, to realize fingerprint recognition.
2, for the realization of touch-control
By the image scanning to finger, the position at finger contact surface center can be obtained by weight calculation, toTo touch-control coordinate (X, Y), touch-control is realized.
3, for the calculating of finger pressure
The image of entire finger under pressure is obtained by scanning first, then obtains the figure of entire finger under stressPicture is compared.And when finger has pressure effect, one side contact area is extended by pressure, and contact area is caused to increase；SeparatelyThe zastrugi of one side fingerprint can change, thus the image obtained can also change；It is compared by the image data of different frame,It can be calculated that the variation of the variation and fingerprint ditch ridge of contact surface passes through calculating to obtain the data that pressure increases and reducesIt can obtain pressure Z values.
4, In vivo detection
By whether detecting pulse/heartbeat data to realize.It is true biological fingerprint to have pulse/heartbeat.Ultrasonic wave can be withPerceive the variation of human body artery blood vessel, i.e., the pulse of arterial vascular one one receipts.It, can be with by the collection of number of pulses evidenceRealize that the data of heartbeat acquire, to discern whether as real finger to biological pulse.
In one embodiment of the invention, it is preferable that the reception pole plate 1 includes multiple independent receiving units.
In this embodiment, the reception pole plate 1 is one and is made of multiple independent receiving units that PPI can be set,Generally 500PPI.Independent receiving unit, the different position of corresponding finger, finger contact area are divided into very by separate unitMostly small region.Ultrasonic wave encounters fingerprint ditch and fingerprint ridge, will produce different sound wave volume reflections, receives pole plate 1 and passes through dockingThe sound wave amount received carries out that corresponding ultrasonic signal is calculated, and ultrasonic signal is converted into number by the AISC chips 3Signal obtains fingerprint image.
In one embodiment of the invention, it is preferable that the transmitting pole plate 2 includes multiple is stacked and pressure in parallelConductive film.
In this embodiment, the transmitting pole plate 2 includes multiple is stacked and piezoelectric membrane in parallel, each piezoelectricity are thinFilm sends out ultrasonic wave so that sound field intensity superposition can drop so that when needing to provide the ultrasonic wave of some strengthThe low demand to driving voltage.
In one embodiment of the invention, it is preferable that the transmitting pole plate 2 further includes being driven for applying to piezoelectric membraneThe multiple electrodes of dynamic voltage.
In this embodiment, the transmitting pole plate 2 further includes the multiple electrodes for applying driving voltage to piezoelectric membrane,Each piezoelectric membrane and the electrode of both sides constitute a unit.
In one embodiment of the invention, it is preferable that multiple piezoelectricity being stacked of the transmitting pole plate 2 are thinThe polarization direction of film is identical, and separation layer is arranged between two neighboring piezoelectric membrane, and it is thin that each electrode acts only on a piezoelectricityFilm.
In this embodiment, the polarization direction of multiple piezoelectric membranes being stacked of the transmitting pole plate 2 is identical,So that each emitted ultrasonic signal of piezoelectric membrane is consistent, and makes electrically to completely cut off between unit by separation layer, to multipleLinear enhancing is realized in ultrasonic signal superposition.
The present invention also provides a kind of electronic equipment, including touch-control, fingerprint and pressure three described in any embodimentUnify identifying system, due to touch-control, fingerprint and the three-in-one identifying system of pressure described in any of the above-described embodiment, thus hasThere is the advantageous effect of any of the above-described embodiment, this is no longer going to repeat them.
In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peaceThe terms such as dress ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, it can alsoIt is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is rightFor those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. means to combineThe embodiment or the particular features, structures, materials, or characteristics of example description are contained at least one embodiment of the present invention or showIn example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover,The particular features, structures, materials, or characteristics of description can be in any one or more embodiments or example in an appropriate mannerIn conjunction with.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repairChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.