CN110531898A - A kind of capacitive induction unit control method, system and device - Google Patents
A kind of capacitive induction unit control method, system and device Download PDFInfo
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- CN110531898A CN110531898A CN201910891746.9A CN201910891746A CN110531898A CN 110531898 A CN110531898 A CN 110531898A CN 201910891746 A CN201910891746 A CN 201910891746A CN 110531898 A CN110531898 A CN 110531898A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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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
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of capacitive induction unit control method, system and device, method includes: to execute inducing function based on low consumption mode, exports low consumption inductive signal, exports gesture recognition information according to low consumption inductive signal；It obtains fingerprint recognition and starts event, inducing function is executed based on non-low consumption mode, exports non-low consumption inductive signal, fingerprint identification information is exported according to non-low consumption inductive signal.The embodiment of the present invention exports low consumption inductive signal, exports gesture recognition information, can satisfy normal touch-control identification by being based on low consumption mode；It obtains fingerprint recognition and starts event, non-low consumption inductive signal is exported based on non-low consumption mode, fingerprint identification information is exported, can satisfy the fingerprint recognition under specific condition；Corresponding start-up mode is set by different demands, can realize the function switch of touch-control and fingerprint recognition in the case where single induction structure, not need additional identification structure, can reduce the difficulty of the production of induction structure.
Description
Technical field
The present invention relates to technical field of touch control, especially a kind of capacitive induction unit control method, system and device.
Background technique
For demand for security and convenient demand, carrying out identification with smart machine becomes first choice, due to high peace
Quan Xing, identification of fingerprint are applied in smart machine by more and more to identify user's identity.
Not the advantages that pressure is not needed to generate signal, support multipoint-touch-technology due to capacitive touch screen, it is existing
What touch control detection device was mostly used greatly is condenser type, and fingerprint recognition is compared with the identification of common touch-control, it is desirable that higher induction fineness,
It is equivalent to and needs to be arranged more more dense sensing elements.
The existing equipment that touch-control and fingerprint recognition can be supported to operate simultaneously, most of use will realize touch-control sensing function
Sensing element and realize the mode separately arranged of sensing element of fingerprint identification function.The position for needing support fingerprint recognition is set
More more dense sensing elements are set, to meet the needs of accurately identifying finger lines, remaining is not required to the part accurately incuded then
Using more sparse sensing element, also meet the requirement of touch-control identification enough.But this needs for sensing element layer to be divided into two portions
Divide to manufacture, and the sensing element of each part also will be individually laid out.In use, only the specified region in part is supported to refer to
Line identification, it is inflexible.
Summary of the invention
The embodiment of the present invention is intended to solve at least some of the technical problems in related technologies.For this purpose, this
One purpose of inventive embodiments is to provide a kind of capacitive induction unit control method, system and device.
The technical scheme adopted by the invention is that:
In a first aspect, the embodiment of the present invention provides a kind of capacitive induction unit control method, comprising: be based on low consumption mode
Inducing function is executed, low consumption inductive signal is exported, gesture recognition information is exported according to low consumption inductive signal；Fingerprint recognition is obtained to open
Dynamic event executes inducing function based on non-low consumption mode, exports non-low consumption inductive signal, is referred to according to the output of non-low consumption inductive signal
Line identification information.
Preferably, capacitive induction unit includes several induction points, and low consumption mode includes: that selected section induction point executes sense
Answer function；Alternatively, all or part of induction point is selected to execute inducing function with the scan frequency for being less than preset slow threshold.
Preferably, fingerprint recognition starting event includes: to obtain fingerprint recognition request instruction；Alternatively, detecting induction region
Interior, the variation of capacitance meets preset rule change.
Preferably, capacitive induction unit control method further include: after completing fingerprint recognition, it is low for switching non-low consumption mode
Consumption mode executes inducing function.
Second aspect, the embodiment of the present invention provide a kind of capacitive induction unit control system, comprising: sleep block, base
Inducing function is executed in low consumption mode, exports low consumption inductive signal, gesture recognition information is exported according to low consumption inductive signal；Activation
Module, based on non-low consumption mode execution inducing function, exports non-low consumption inductive signal for obtaining fingerprint recognition starting event,
Fingerprint identification information is exported according to non-low consumption inductive signal.
Preferably, low consumption mode includes: that selected section induction point executes inducing function；Alternatively, all or part of sense of selection
It should put to be less than the scan frequency of preset slow threshold and execute inducing function.
Preferably, fingerprint recognition starting event includes: to obtain fingerprint recognition request instruction；Alternatively, detecting induction region
Interior, the variation of capacitance meets preset rule change.
Preferably, comprising: switching module, after completing fingerprint recognition, switching non-low consumption mode is low consumption mode, is executed
Inducing function.
The third aspect, the embodiment of the present invention provide a kind of capacitive induction unit control apparatus, comprising: several senses are distributed with
The sensing unit layer and IC that should be put；IC is based on low consumption mode execution inducing function for controlling sensing unit layer；Sensing unit layer
Export low consumption inductive signal；IC exports gesture recognition information according to low consumption inductive signal；IC is for obtaining fingerprint recognition starting thing
Part, control sensing unit layer are based on non-low consumption mode and execute inducing function；Sensing unit layer exports non-low consumption inductive signal；IC root
Fingerprint identification information is exported according to non-low consumption inductive signal.
Preferably, IC is also used to after completing fingerprint recognition, controls sensing unit layer to switch non-low consumption mode as low consumption
Mode.
The beneficial effect of the embodiment of the present invention is:
The embodiment of the present invention exports low consumption inductive signal, according to low consumption sense by executing inducing function based on low consumption mode
Induction signal exports gesture recognition information, can satisfy normal touch-control identification；It obtains fingerprint recognition and starts event, be based on non-low consumption
Mode executes inducing function, exports non-low consumption inductive signal, exports fingerprint identification information, Neng Gouman according to non-low consumption inductive signal
Fingerprint recognition under sufficient specific condition；By different demands, corresponding start-up mode is set, it can be in single induction structure
In the case where, it realizes the function switch of touch-control and fingerprint recognition, does not need additional identification structure, can reduce induction structure
The difficulty of production.
Detailed description of the invention
Fig. 1 is a kind of flow chart of embodiment of capacitive induction unit control method；
Fig. 2 is a kind of connection figure of embodiment of capacitive induction unit control system；
Fig. 3 is a kind of structure chart of embodiment of touch device；
Fig. 4 is a kind of frame diagram of embodiment of sensing element route.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Embodiment 1.
A kind of capacitive induction unit control method as shown in Figure 1, comprising steps of
S1, inducing function is executed based on low consumption mode, exports low consumption inductive signal, gesture is exported according to low consumption inductive signal
Identification information；
S2, fingerprint recognition starting event is obtained, inducing function is executed based on non-low consumption mode, export non-low consumption induction letter
Number, fingerprint identification information is exported according to non-low consumption inductive signal.
Capacitive induction unit control method include thes steps that optional: S3, after completing fingerprint recognition, switching non-low consumption mould
Formula is low consumption mode, executes inducing function.
Fingerprint recognition starting event includes: to obtain fingerprint recognition request instruction；Alternatively, detecting in induction region, capacitor
The variation of value meets preset rule change.
In the embodiment of the present invention, the capacitive induction unit taken, principle is that ITO (oxidation is provided on substrate
Indium tin, i.e. transparent electrode), the driving electrodes and induction electrode of composition form capacitance structure between driving electrodes and induction electrode.
It is triggered by the electrostatic of human body, capacitance variations can be generated between driving electrodes and induction electrode, then inducing function is output pair
The capacitance answered.Low consumption inductive signal is then the capacitance exported under low consumption mode, and non-low consumption inductive signal is then non-low consumption mould
The capacitance exported under formula.
Be illustrated by taking handset touch panel as an example, substrate be glass material plate, induction point is set on substrate, i.e., by
The capacitance structure that electrode generates.The induction point being evenly distributed is set on plate, and corresponding auxiliary circuit is set so that induction point
It can work normally.The setting of induction point can not also take average mode, but should be able to realize the entire touch screen of covering
Display area, and to support fingerprint identification function, then the quantity of the induction point in the subregion in display area needs energy
Enough meet the induction dot density of the point of capacitance variations required for fingerprint recognition.
Due to the limitation of data-handling capacity, the upper of the capacitance of whole induction points can't be executed in synchronization
Report.Therefore it can gradually upload in a certain order, the capacitance of the induction point of various pieces.
Corresponding Processing Algorithm includes touch-control recognizer and algorithm for recognizing fingerprint, belongs to mature technology.Its principle exists
In determining contact position according to the capacitance variations of induction point, determine touching signals according to the variation of contact position.Based on induction point
The size of capacitance change determines the position of the peak and valley of fingerprint, wherein the connection figure of the position at peak is fingerprint.
Low consumption mode, i.e. selected section induction point execute inducing function；Alternatively, selected section induction point is pre- to be less than at this time
If slow threshold (value being specifically arranged for one) scan frequency execute inducing function；Or whole induction points are to be less than
The scan frequency of preset slow threshold executes inducing function.A part of induction point is selected, the induction point of the part is in energy
Enough generate (energization) state of capacitor.The mutual capacitance between the driving electrodes and induction electrode of circuit is accessed, because finger is touched,
Capacitance can change, and not have mutual capacitance between no power or hanging electrode.It is then to have mutually if ground connection connects other current potentials
Capacitor, only the data of mutual capacitance variable quantity do not spread out of.
In the case where range is fixed, induction point is fewer, and the induction point capacitance change of upload is also fewer, then corresponding survey
Accuracy of measurement is also low；In the case where induction point is fixed, scan frequency is lower, then the quantity of the capacitance uploaded is also fewer, then right
The measurement accuracy answered is also low.Actual in use, the fingerprint identification technology based on capacitor needs a large amount of induction point to support
Data processing is to obtain the image of fingerprint.And identify that the operation of touch-control does not need so much induction point, therefore, pass through low consumption
Mode can satisfy the demand of touch-control identification.
Corresponding, non-low consumption mode is then to select whole induction points；Or selected section induction point (corresponding fingerprint bit
It sets).It so, it is possible to obtain more capacitances, can support the identification of fingerprint.
In a general case, fingerprint recognition is enough as long as primary.Therefore, after completing fingerprint recognition, can switch
Non- low consumption mode is low consumption mode, can reduce power consumption.
Fingerprint recognition starting event includes: to obtain fingerprint recognition request instruction；Alternatively, detecting in induction region, capacitor
The variation of value meets preset rule change.
Fingerprint recognition request instruction is in the nature specific signal.For example, the widely used screen locking on mobile phone, is using
After person touches the key on mobile phone, display screen can enter state to be unlocked, at this point it is possible to think that the system of mobile phone is being done
It is good to prepare to wait for unlocked by fingerprint.At this point, the trigger signal of key, as specific signal.Alternatively, mobile phone is known by voice
Specific sentence is not identified, then exports a signal, which can be used as specific signal.
Or display screen itself is in screen lock state, but its function for obtaining touch operation (perceives capacitance variations
Ability) still have, then a kind of instruction outgoing event can be set: for example can continuously click on a display screen several times,
After processor determines click (the i.e. corresponding capacitance variations event) for existing and being directed to display screen several times, assert and generate fingerprint
It identifies starting event, then according to default rule, exports fingerprint recognition request instruction.
In addition, if it is possible to which spontaneous execution fingerprint recognition can bring many conveniences to user.Therefore, Ke Yijian
Induction region is surveyed, when the variation of the capacitance in some region meets preset rule change, then it is assumed that produce fingerprint recognition
Starting event.Specific transformation rule, can be, some regional scope, the variation of capacitance in 3s, remain unchanged or
It varies less, then it is assumed that there is finger (fingerprint) to rest on the region, it is clear that if it is normal touch control operation, do not need to stop
It is crossed for a long time in a place, it may be considered that, user needs to be implemented fingerprint recognition, i.e. generation fingerprint recognition starts event.
Embodiment 2.
The embodiment of the present invention provides a kind of capacitive induction unit control system as shown in Figure 2, comprising: sleep block 1,
Inducing function is executed based on low consumption mode, exports low consumption inductive signal, gesture recognition information is exported according to low consumption inductive signal；Swash
Flexible module 2 executes inducing function based on non-low consumption mode, exports non-low consumption induction letter for obtaining fingerprint recognition starting event
Number, fingerprint identification information is exported according to non-low consumption inductive signal.
Low consumption mode includes: the part induction point execution inducing function that selection is evenly distributed；Alternatively, what selection was evenly distributed
Part induction point executes inducing function with the scan frequency for being less than preset slow threshold；Or whole induction points are to be less than
The scan frequency of preset slow threshold executes inducing function.
Fingerprint recognition starting event includes: to obtain fingerprint recognition request instruction；Alternatively, detecting in induction region, capacitor
The variation of value meets preset rule change.
A kind of capacitive induction unit control system includes: switching module 3, after completing fingerprint recognition, is switched non-low
Consumption mode is low consumption mode, executes inducing function.
Embodiment 3.
A kind of capacitive induction unit control apparatus provided in an embodiment of the present invention is (in subsequent explanation, referred to as: touch-control dress
Set), comprising: the sensing unit layer and IC of several induction points is distributed with；IC is held for controlling sensing unit layer based on low consumption mode
Row inducing function；Sensing unit layer exports low consumption inductive signal；IC exports gesture recognition information according to low consumption inductive signal；IC is used
Start event in obtaining fingerprint recognition, control sensing unit layer is based on non-low consumption mode and executes inducing function；Sensing unit layer is defeated
Non- low consumption inductive signal out；IC exports fingerprint identification information according to non-low consumption inductive signal.
IC is also used to after completing fingerprint recognition, controls sensing unit layer to switch non-low consumption mode as low consumption mode.
Entire touch device includes five parts as shown in Figure 3, coating, sensing element layer (i.e. sensing unit layer),
Substrate, conducting wire, IC, wherein sensing element layer: including several induction electrodes and driving electrodes, by towards grouping, one to electrode
It is staggered with another to electrode, is connected between electrode in the same direction with conductive material, megohmite insulant is set between electrode not in the same direction, connect
Sensing element columns and line number to IC is optional, and generally, the sensing element number of selection is more, and induction fineness is then higher.
Substrate: insulation plays carrying, protective effect, avoids influencing condenser charge amount.
Sensing element layer can be communicated by conducting wire with IC, and IC can send control signal, receive induction as a result, and being able to achieve not
It is only limitted to the function of touch-control identification and fingerprint recognition.
Under low consumption mode, to scan every several rows, ordered series of numbers electrode, finger touch is detected the presence of.Under non-low consumption mode, with
Nearby all electrodes in particular range scan for finger touch point, detect finger print lines.
The utility model has the advantages that
It is not required to that fingerprint identification structure additionally is arranged, does not need individually to plan specific by touching region, integrated level can be improved, flexibly
Degree reduces cost.It is also advantageous on light transmittance if integrating touch-control and fingerprint recognition simultaneously in one layer.Be commonly designed phase
Than reducing power consumption.Induction fineness as needed is different, it might even be possible to just can control the sensing element of energization on software
(induction point) number, it is flexible and convenient to use.
Embodiment 4.
The structure of specific touch device includes: the sensing element layer under coating and coating.Sensing element layer point
It is three layers, longitudinal electrode is first layer, and transverse electrode is third layer, and insulating layer is arranged between two layers.It is every in sensing element layer
Row each column electrode is wired to IC respectively, and the sensing element shape of sensing element layer is diamond shape or other shapes, short right
Linea angulata 40um, long-diagonal 40um, two respectively have 200x200 apart from nearest electrode spacing 10um, the electrode of two different directions,
Driving circuit is integrated in IC to drive sensing element array (being made of each row and column electrode) and receive circuit, to receive
Mutual capacitance delta data between sensing element, in touch device suspend mode, wait wake up or usually in use.
On the basis of above structure, corresponding control principle includes:
Base control principle, touch device is by driving circuit with general precision (for example, 1/8 precision, scans a row interval
Seven rows, one column interval of scanning, seven column, belong to low consumption mode) sensing element array is scanned.It is different when there is touch control operation
Mutual capacitance variable quantity between the sensing element of direction is passed to reception circuit；If there is demand to carry out fingerprint recognition verifying at this time,
Control signal is sent to driving circuit so that whole sensing elements access sensing element array, precision needed for meeting fingerprint recognition
It is required that (precision, that is, induction point density).After the completion of fingerprint recognition operation, returns general precision and be scanned.
Sensing element control principle 1: because being related to selecting different number of sensing element, it is meant that sensing element layer needs
Want more signal wires to control, in order to optimize solve the problems, such as chip outlet it is excessive this, be used as the relevant driving of touch-control sensing
Circuit can be independent from IC, is realized and is integrated in sensing device with decoder circuit.The output end of decoder connects sense
Element arrays are answered, control whether each road sensing element is connected into circuit.In touch device suspend mode, wait wake up or executing touch-control behaviour
When making, it is scanned with general precision (1/4 precision scans three row of a row interval, one column interval of scanning, three column), as shown in Figure 4
Sensing element route frame diagram, unused electrode can be grounded or floating, wherein RX0~RX8 is row electrode, and TX0~TX8 is
Column electrode, thick line are the electrode (sensing element) selected, filament and ground connection is non-selected electrode.
Fingerprint recognition principle: after there is touch control operation, coupled capacitor (mutual capacitance) charge between the sensing element of different directions
Storage capacity variation is sensed, and result is exported to reception circuit.If needing to carry out fingerprint recognition at this time, IC sends control signal
To decoder and sensing element layer, selection is by by from centered on by the nearest sensing element in touching region midpoint, upper and lower 40 row totally 81
Totally 81 sensing elements arranged access circuit for row and 40 column of left and right, obtain two kinds of charges towards mutual capacitance between electrode and store quantitative change
The size of change amount, further obtains fingerprint image, carries out image procossing, and with deposited fingerprint comparison in fingerprint base.After make
Sensing element array returns to general precision (scanning one row interval, three row, one column interval of scanning, three column) and is scanned to continue to serve as touching
Control operation.
Sensing element control principle 2: similar to sensing element control principle 1, driving circuit can use shift-register circuit
It realizes and is integrated in sensing device, at this point, the selection of driving electrodes can be controlled only by two paths of signals in induction electrode layer
(clock and startup).IC has a data-out port and a clock signal port to be connected to shift register, multiple displacements
Register cascade, the output end of shift register array connect driving electrode array, and whether control is connected into per driving electrodes all the way
Circuit.
It is different from the process after the touch control operation of sensing element control principle 1 in the case where sensing element control principle 2
, control signal will be sent to shift register array and sensing element array, to carry out subsequent operation.Fingerprint comparison
Successful, after unlocker device, IC sends control signal to shift register array and sensing element array, returns sensing element array
To general precision, to continue to serve as touch control operation.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of capacitive induction unit control method characterized by comprising
Inducing function is executed based on low consumption mode, exports low consumption inductive signal, gesture is exported according to the low consumption inductive signal and is known
Other information；
It obtains fingerprint recognition and starts event, inducing function is executed based on non-low consumption mode, non-low consumption inductive signal is exported, according to institute
State non-low consumption inductive signal output fingerprint identification information.
2. a kind of capacitive induction unit control method according to claim 1, if the capacitive induction unit includes
Dry induction point, which is characterized in that the low consumption mode includes:
Selected section induction point executes inducing function；
Alternatively, all or part of induction point is selected to execute inducing function with the scan frequency for being less than preset slow threshold.
3. a kind of capacitive induction unit control method according to claim 1 or 2, which is characterized in that the fingerprint is known
Not Qi Dong event include:
Obtain fingerprint recognition request instruction；
Alternatively, detecting in induction region, the variation of capacitance meets preset rule change.
4. a kind of capacitive induction unit control method according to claim 3, which is characterized in that further include:
After completing fingerprint recognition, switching non-low consumption mode is low consumption mode, executes inducing function.
5. a kind of capacitive induction unit control system characterized by comprising
Sleep block executes inducing function based on low consumption mode, exports low consumption inductive signal, defeated according to the low consumption inductive signal
Gesture recognition information out；
Active module executes inducing function based on non-low consumption mode, exports non-low consumption sense for obtaining fingerprint recognition starting event
Induction signal exports fingerprint identification information according to the non-low consumption inductive signal.
6. a kind of capacitive induction unit control system according to claim 5, which is characterized in that the low consumption mode packet
It includes:
Selected section induction point executes inducing function；
Alternatively, all or part of induction point is selected to execute inducing function with the scan frequency for being less than preset slow threshold.
7. a kind of capacitive induction unit control system according to claim 5 or 6, which is characterized in that the fingerprint is known
Not Qi Dong event include:
Obtain fingerprint recognition request instruction；
Alternatively, detecting in induction region, the variation of capacitance meets preset rule change.
8. a kind of capacitive induction unit control system according to claim 7 characterized by comprising
Switching module, after completing fingerprint recognition, switching non-low consumption mode is low consumption mode, executes inducing function.
9. a kind of capacitive induction unit control apparatus characterized by comprising
The sensing unit layer and IC of several induction points is distributed with；
The IC is based on low consumption mode execution inducing function for controlling the sensing unit layer；
The sensing unit layer exports low consumption inductive signal；
The IC exports gesture recognition information according to the low consumption inductive signal；
The IC controls the sensing unit layer and is based on non-low consumption mode execution induction function for obtaining fingerprint recognition starting event
Energy；
The sensing unit layer exports non-low consumption inductive signal；
The IC exports fingerprint identification information according to the non-low consumption inductive signal.
10. a kind of capacitive induction unit control apparatus according to claim 9, which is characterized in that the IC is also used to
After completing fingerprint recognition, sensing unit layer is controlled to switch non-low consumption mode as low consumption mode.
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