CN107563262A - Direction air navigation aid, device and fingerprint image sensor based on fingerprint recognition - Google Patents
Direction air navigation aid, device and fingerprint image sensor based on fingerprint recognition Download PDFInfo
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Abstract
The present invention is applied to integrated circuit fields, there is provided a kind of direction air navigation aid, device and fingerprint image sensor based on fingerprint recognition, this method include：Multiple navigation areas are set in the pixel region of fingerprint sensor；Successively repeatedly navigation area is scanned, every time one group of navigation data of the corresponding generation of scanning；The pressed state of each navigation area when judging to scan every time according to every group of navigation data；By navigation area, when priority scans, corresponding pressed state change judges navigation direction, and performs navigation command.The present invention sets navigation area on a sensor, and substitute software in a manner of navigation data report point hardware judges navigation direction by way of image comparison, faster more accurately realizes that navigation direction judges, and realizes accurate calculating finger sliding speed.
Description
Technical field
The invention belongs to integrated circuit fields, more particularly to a kind of direction air navigation aid based on fingerprint recognition, device and
Fingerprint image sensor.
Background technology
Increasing electronic equipment is all used by tactile manipulation, and as finger the most ripe in biological identification technology at present
Line identification especially as first choice be widely used with secure payment, authentication and various intelligent terminals in.
Fingerprint image sensor, when doing direction navigation feature, can identify finger as the important component in fingerprint recognition
Action so as to manipulation signal corresponding to generating, such as finger cunning, downslide, left cunning, right cunning etc. on fingerprint image sensor
And the judgement of other more direction.
But existing fingerprint image sensor is typically first to gather multiframe for gesture identification (such as 4 directions, 8 directions)
Complete image, and being differentiated by image algorithm, but during by image algorithm to handle navigation, have the following disadvantages：
First, need completely to gather multiple image, acquisition time is very long；2nd, the multiple image collected by algorithm process, and generate phase
Close template or image compares position two-by-two, processing time is very long；3rd, because navigation is by judging position from time dimension
The change of dimension and variation tendency realize, therefore acquisition time is long, processing time long can cause navigation to judge to lose
Effect, error.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of direction air navigation aid based on fingerprint recognition, it is intended to solves existing
Fingerprint image sensor carries out gesture navigation using multiple image algorithm, because recognition time length causes the problem of failing of navigating.
The embodiment of the present invention is achieved in that a kind of direction air navigation aid based on fingerprint recognition, and methods described includes
Following step：
Multiple navigation areas are set in the pixel region of fingerprint sensor, and each navigation area includes one or more pictures
Vegetarian refreshments；
Successively repeatedly each navigation area is scanned, every time one group of navigation data of the corresponding generation of scanning；
The pressed state of each navigation area when judging to scan every time according to every group of navigation data；
By navigation area, when priority scans, corresponding pressed state change judges navigation direction, and is led corresponding to execution
Boat order.
The another object of the embodiment of the present invention is, there is provided a kind of direction guider based on fingerprint recognition, the dress
Put including：
Navigation area setting unit, it is each to lead for setting multiple navigation areas in the pixel region of fingerprint sensor
Navigating area domain includes one or more pixels；
Scanning element, for successively repeatedly being scanned to each navigation area, scanning is corresponding every time generates one group of navigation data；
Pressed state judging unit, the pressing shape of each navigation area during for judging scanning every time according to every group of navigation data
State；
Navigation direction judging unit, for corresponding pressed state change judgement to be led when priority scans by navigation area
Boat direction, and navigation command corresponding to execution.
The another object of the embodiment of the present invention is, there is provided a kind of including the above-mentioned direction guider based on fingerprint recognition
Fingerprint image sensor.
The embodiment of the present invention sets navigation area on a sensor, is substituted hardware in a manner of navigation data report point soft
Part judges navigation direction by way of image comparison, and greatly reducing needs the data that gather, thus data acquisition time and
Data processing time is all greatly decreased, and so as to more correspond exactly to the change of time dimension and location dimension, avoids navigation
Judge failure, error, faster more accurately realize that navigation direction judges, and change by the way that report point number and pressing position are relative
Distance realizes accurate calculating finger sliding speed, has filled up current technology blank, has greatly met the navigation needs of client.
Brief description of the drawings
Fig. 1 is the flowage structure figure of the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition；
Fig. 2 is that navigation area sets signal in the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition
Figure；
Fig. 3 is the schematic diagram of navigation direction in the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition；
Fig. 4 a, 4b are sliding signal on finger in the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition
Figure；
Fig. 5 a-5c are finger downslide signal in the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition
Figure；
Fig. 6 a, 6b are the right sliding signal of finger in the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition
Figure；
Fig. 7 a, 7b are that signal is slided in finger upper left in the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition
Figure；
Fig. 8 is the structure chart of the direction guider provided in an embodiment of the present invention based on fingerprint recognition；
Fig. 9 is the exemplary block diagram of the direction guider provided in an embodiment of the present invention based on fingerprint recognition.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
The embodiment of the present invention sets navigation area on a sensor, is substituted hardware in a manner of navigation data report point soft
Part judges navigation direction by way of image comparison, faster more accurately realizes that navigation direction judges, and realizes accurate calculate
Finger sliding speed.
Fig. 1 shows the flowage structure of the direction air navigation aid provided in an embodiment of the present invention based on fingerprint recognition, in order to
It is easy to illustrate, illustrate only part related to the present invention.
As one embodiment of the invention, the direction air navigation aid based on fingerprint recognition comprises the steps：
In step S101, multiple navigation areas, each navigation area bag are set in the pixel region of fingerprint sensor
Include one or more pixels；
In embodiments of the present invention, should be non-overlapping between multiple navigation areas 1 of setting, and it is preferably evenly distributed through pixel
In region 2, referring to Fig. 2, there is provided 16 navigation areas 1, each navigation area in fig. 2 to include 64 pixels, below with
Illustrated exemplified by 16 navigation areas.
What deserves to be explained is the quantity of navigation area does not limit, it can be set according to the actual requirements, sensor
Pixel region is bigger, and identification gesture is more complicated, and the navigation area quantity of setting should be more, and the picture that each navigation area includes
The quantity of vegetarian refreshments can be different.
In step s 102, successively repeatedly each navigation area is scanned, every time one group of navigation data of the corresponding generation of scanning, should
Navigation data includes but is not limited to the scanning average value of each navigation area；
In embodiments of the present invention, the corresponding scanning average value of each navigation area, the scanning average value refer to every time
The scan values sum of each pixel is averaged again in a navigation area during scanning.
As one embodiment of the invention, navigation data can also by the data variances of scan values that scan values are summed, asked,
Any combination of the modes such as the signal to noise ratio of scan values is asked to realize.
In step s 103, the pressed state of each navigation area when judging to scan every time according to every group of navigation data；
As a preferred embodiment of the present invention, pressing scan values parameter area can be provided with and scan value parameter without pressing
Scope, by by the scanning average value in every group of navigation data one by one compared with above-mentioned two parameter scope, to judge to scan every time
When each navigation area whether have pressing, when certain one scan average value be in have pressing scan values parameter area when, judge the scanning
Navigation area corresponding to average value is in pressed state, when certain one scan average value is in without pressing scan values parameter area,
Judge that navigation area is in non-pressed state corresponding to the scanning average value.And then given birth to according to the pressed state of each navigation area
Into multiple corresponding pressing signals and non-pushed signal, and report, the corresponding pressing signal of each navigation area or non-pushed letter
Number.
For example, if the scope of navigation data is 0~1024, then it is 768 to set threshold value, then will have pressing scan values ginseng
Number scope is arranged to the part for being more than threshold value in navigation data scope, will be arranged to navigation data without pressing scan values parameter area
It is less than the part of (being equal to) threshold value in scope, i.e., is judged as there is pressing more than 768, is judged as no pressing less than or equal to 768.
Preferably, the pressing signal could be arranged to high level, and non-pushed signal could be arranged to low level, certainly, instead
Also may be used.
Sensor is touched for example, being pressed when finger, sensor enters in navigation pattern after recognizing finger, it is assumed that there are 16
Navigation area, each navigation area are comprised provide that as 64 pixels, because 64 pixels are having finger to press and without finger
Pressing, its scan values is different, according to sensor characteristics, it is no pressing when 64 pixels scanning average value be A~A+20,
There is the arranges value pressed during pressing for A-50 or so, wherein A for sensor, by user configuration, even if to ensure different sensors
It is variant also flexibly to use.
It may determine that by two value ranges, whether 16 navigation areas have pressing respectively, and non-pushed signal 0 represents this and led
Navigating area domain is in be represented the navigation area and is in pressed state without pressed state, pressing signal 1.Therefore, the embodiment of the present invention had been both
The complete image of multiframe need not be gathered, it is not required that multiple image is compared by change in location by software algorithm two-by-two, but
Only by a small amount of data signal be can determine whether each navigation area by tactile situation, and the performance of data signal can lead to
Hardware logic electric circuit is crossed to realize, is simply that logic gates can be achieved above-mentioned to sentence ratio by building.Therefore the present invention is real
Applying example does not need software to participate in sentencing ratio, only realizes automatic decision by hardware and reports host computer, host computer passes through 16 positions
Binary numeral, you can know that each navigation area is corresponding by tactile state when secondary scanning.
In step S104, by navigation area, when priority scans, corresponding pressed state change judges navigation direction,
And navigation command corresponding to performing.
As a preferred embodiment of the present invention, pressing is formed by the pressed state of each navigation area when can scan every time
Areally-distributed data, the change of area pressed is judged according to the change of multiple area pressed distributed data, so as to judge navigation side
To.In addition, the number and time interval of scanning can be set according to the actual requirements.
In embodiments of the present invention, navigation direction can be 4 directions (upper and lower, left and right), 8 directions (upper and lower, left and right,
Upper left, upper right, lower-left, bottom right), 16 directions, referring to Fig. 3, but be not limited to above-mentioned direction.
In embodiments of the present invention, in order to understand conveniently, area pressed distributed data is showed by the way of figure, reality
On, area pressed distributed data can be formed with the mode that numeric distribution arranges, certainly, not limit the concrete mode of arrangement.
For example, in 0~T time interval, take multiple scan.
With reference to Fig. 4 a- Fig. 4 b, in T1 time sweeps, area pressed distributed data such as Fig. 4 a, wherein can be understood as by
The value of the navigation area of finger covering is 1, and the value of non-covered navigation area is 0, in T2 time sweeps, area pressed distribution
Data such as Fig. 4 b, 0 ＜ T1 ＜ T2 ＜ T, by data variation twice, it is apparent that the navigation direction is upper cunning；
With reference to Fig. 5 a- Fig. 5 c, in T1 time sweeps, area pressed distributed data such as Fig. 5 a, in T2 time sweeps, press
Intermediate pressure section distributed data such as Fig. 5 b, in T3 time samplings, area pressed distributed data such as Fig. 5 c, 0 ＜ T1 ＜ T2 ＜ T3 ＜ T,
By data variation three times, it is apparent that the navigation direction is downslide；
With reference to Fig. 6 a- Fig. 6 b, in T1 time sweeps, area pressed distributed data such as Fig. 6 a, in T2 time sweeps, press
Intermediate pressure section distributed data such as Fig. 6 b, 0 ＜ T1 ＜ T2 ＜ T, by data variation twice, it is apparent that the navigation direction is the right side
It is sliding；
With reference to Fig. 7 a- Fig. 7 b, in T1 time sweeps, area pressed distributed data such as Fig. 7 a, in T2 time sweeps, press
Intermediate pressure section distributed data such as Fig. 7 b, 0 ＜ T1 ＜ T2 ＜ T, by data variation twice, it is apparent that the navigation direction is a left side
Upper cunning.
The embodiment of the present invention sets navigation area on a sensor, is substituted hardware in a manner of navigation data report point soft
Part judges navigation direction by way of image comparison, and greatly reducing needs the data that gather, thus data acquisition time and
Data processing time is all greatly decreased, and so as to more correspond exactly to the change of time dimension and location dimension, avoids navigation
Judge failure, error, faster more accurately realize that navigation direction judges.
As further embodiment of this invention, the direction air navigation aid based on fingerprint recognition can also wrap after step s 103
Include following step：
In step S105, what navigation area pressed state changed in the statistical unit time reports number, and passes through navigation
Region corresponding pressed state change when priority scans determines that pressing position is relative and changes distance；
In step s 106, according to reporting the relative change distance of number and pressing position to calculate finger sliding speed.
As a preferred embodiment of the present invention, step S105 and step S106 can also be performed after step s 104, profit
Change distance to determine that pressing position is relative with the area pressed distributed data of step S104 generations, simplify execution step, contract
The short judgement time.
The embodiment of the present invention is by reporting point number and the relative change distance of pressing position to realize that the accurate finger that calculates slides speed
Degree, has filled up current technology blank, has been advantageous to more multi-functional exploitation.
Fig. 8 shows the structure of the direction guider provided in an embodiment of the present invention based on fingerprint recognition, for the ease of
Illustrate, illustrate only part related to the present invention.
As one embodiment of the invention, it is somebody's turn to do the direction guider 100 based on fingerprint recognition and can apply to any fingerprint
In imaging sensor, including：
Navigation area setting unit 11, it is each for setting multiple navigation areas in the pixel region of fingerprint sensor
Navigation area includes one or more pixels；
Scanning element 12, for successively repeatedly being scanned to each navigation area, scanning is corresponding every time generates one group of navigation data,
The navigation data includes the scanning average value of each navigation area；
Pressed state judging unit 13, the pressing of each navigation area during for judging scanning every time according to every group of navigation data
State；
Navigation direction judging unit 14, for corresponding pressed state change to judge when priority scans by navigation area
Navigation direction, and navigation command corresponding to execution.
In embodiments of the present invention, should be non-overlapping between multiple navigation areas 1 of setting with reference to Fig. 2, and perfectly even divide
For cloth in pixel region 2, each navigation area includes multiple pixels, and corresponding one of each navigation area scans average value,
The scan values sum of each pixel is averaged again in a navigation area when scanning average value refers to each scanning.
As one embodiment of the invention, navigation data can also by the data variances of scan values that scan values are summed, asked,
Any combination of the modes such as the signal to noise ratio of scan values is asked to realize.
What deserves to be explained is the quantity of navigation area does not limit, it can be set according to the actual requirements, sensor
Pixel region is bigger, and identification gesture is more complicated, and the navigation area quantity of setting should be more, and the picture that each navigation area includes
The quantity of vegetarian refreshments can be different.
Fig. 9 shows the exemplary construction of the direction guider provided in an embodiment of the present invention based on fingerprint recognition, in order to
It is easy to illustrate, illustrate only part related to the present invention.
As one embodiment of the invention, the pressed state judging unit 13 includes：
Parameter setting module 131, for being provided with pressing scan values parameter area and without pressing scan values parameter area；
Logic comparator circuit 132, for by the way that the scanning average value in every group of navigation data is scanned with having to press one by one
Value parameter scope and to compare without pressing scan values parameter area, whether each navigation area has pressing during judging to scan every time, when
Certain one scan average value is in when having pressing scan values parameter area, is judged that navigation area corresponding to the scanning average value is in and is pressed
Pressure condition, when certain one scan average value is in without pressing scan values parameter area, judge to navigate corresponding to the scanning average value
Region is in non-pressed state.And press signal and non-pushed letter according to corresponding to the generation of the pressed state of each navigation area is multiple
Number, and report, the corresponding pressing signal of each navigation area or non-pushed signal.
Preferably, the pressing signal could be arranged to high level, and non-pushed signal could be arranged to low level, certainly, instead
Also may be used.
Navigation direction judging unit 14 includes：
Distributed data generation module 141, pressing area is formed by the pressed state of each navigation area during for scanning every time
Domain distributed data；
In embodiments of the present invention, in order to understand conveniently, area pressed distributed data is showed by the way of figure, reality
On, area pressed distributed data can be formed with the mode that numeric distribution arranges, certainly, not limit the concrete mode of arrangement.
Displacement judge module 142, for judging the change of area pressed according to the change of multiple area pressed distributed data,
So as to judge navigation direction.
As one embodiment of the invention, the navigation direction can be 4 directions (upper and lower, left and right), 8 directions (it is upper and lower, left,
The right side, upper left, upper right, lower-left, bottom right), 16 directions, referring to Fig. 3, but be not limited to above-mentioned direction.
In embodiments of the present invention, area pressed point is formed by the pressed state of each navigation area when can scan every time
Cloth data, the change of area pressed is judged according to the change of multiple area pressed distributed data, so as to judge navigation direction.Separately
Outside, the number of scanning and time interval can be set according to the actual requirements.
As a preferred embodiment of the present invention, the direction guider 100 based on fingerprint recognition can also include：
Statistic unit 15 is reported, number is reported for what navigation area pressed state in the statistical unit time changed；
Displacement judging unit 16, for corresponding pressed state change to determine pressing when priority scans by navigation area
Position is relative to change distance；
Speed computing unit 17, for fast according to reporting number and pressing position change distance calculating finger relatively to slide
Degree.
Preferably, when the navigation direction judging unit includes displacement judge module, the above-mentioned He of displacement judge module 142
The reusable of displacement judging unit 16 (shared).
The another object of the embodiment of the present invention is, there is provided a kind of including the above-mentioned direction guider based on fingerprint recognition
Fingerprint image sensor.
The embodiment of the present invention sets navigation area on a sensor, is substituted hardware in a manner of navigation data report point soft
Part judges navigation direction by way of image comparison, and greatly reducing needs the data that gather, thus data acquisition time and
Data processing time is all greatly decreased, and so as to more correspond exactly to the change of time dimension and location dimension, avoids navigation
Judge failure, error, faster more accurately realize that navigation direction judges, and change by the way that report point number and pressing position are relative
Distance realizes accurate calculating finger sliding speed, has filled up current technology blank, has greatly met the navigation needs of client.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of direction air navigation aid based on fingerprint recognition, it is characterised in that methods described comprises the steps：
Multiple navigation areas are set in the pixel region of fingerprint sensor, and each navigation area includes one or more pixels
Point；
Successively repeatedly each navigation area is scanned, every time one group of navigation data of the corresponding generation of scanning；
The pressed state of each navigation area when judging to scan every time according to every group of navigation data；
By navigation area, when priority scans, corresponding pressed state change judges navigation direction, and performs corresponding navigation life
Order.
2. the method as described in claim 1, it is characterised in that described to judge to lead during scanning every time according to every group of navigation data
The step of pressed state in navigating area domain is specially：
It is provided with pressing scan values parameter area and without pressing scan values parameter area；
By by every group of navigation data one by one with have pressing scan values parameter area and without pressing scan values parameter area compared with, come
Judge whether each navigation area has pressing during scanning every time；
Signal and non-pushed signal are pressed according to corresponding to the generation of the pressed state of each navigation area is multiple, and is reported.
3. the method as described in claim 1, it is characterised in that described to pass through navigation area corresponding pressing when priority scans
State change judges that the step of navigation direction is specially：
Area pressed distributed data is formed by the pressed state of each navigation area during scanning every time；
The change of area pressed is judged according to the change of multiple area pressed distributed data, so as to judge navigation direction.
4. the method as described in claim 1, it is characterised in that each in the scanning each according to every group of navigation data judgement
After the step of pressed state of navigation area, also comprise the steps：
What navigation area pressed state changed in the statistical unit time reports number, and by navigation area when priority scans pair
The pressed state change answered determines that pressing position is relative and changes distance；
Finger sliding speed is calculated according to number and the relative change distance of pressing position is reported.
5. a kind of direction guider based on fingerprint recognition, it is characterised in that described device includes：
Navigation area setting unit, for setting multiple navigation areas, each navigation area in the pixel region of fingerprint sensor
Domain includes one or more pixels；
Scanning element, for successively repeatedly being scanned to each navigation area, scanning is corresponding every time generates one group of navigation data；
Pressed state judging unit, the pressed state of each navigation area during for judging scanning every time according to every group of navigation data；
Navigation direction judging unit, for corresponding pressed state change to judge navigation side when priority scans by navigation area
To, and navigation command corresponding to execution.
6. device as claimed in claim 5, it is characterised in that the pressed state judging unit includes：
Parameter setting module, for being provided with pressing scan values parameter area and without pressing scan values parameter area；
Logic comparator circuit, for by the way that with having every group of navigation data is pressed into scan values parameter area and without pressing scanning one by one
Value parameter scope compares, and whether each navigation area has pressing during judging to scan every time, and according to the pressing shape of each navigation area
Pressing signal and non-pushed signal corresponding to state generation is multiple, and report.
7. device as claimed in claim 5, it is characterised in that the navigation direction judging unit includes：
Distributed data generation module, area pressed distribution number is formed by the pressed state of each navigation area during for scanning every time
According to；
Displacement judge module, for judging the change of area pressed according to the change of multiple area pressed distributed data, so as to sentence
Disconnected navigation direction.
8. the device as described in claim 5 or 7, it is characterised in that described device also includes：
Statistic unit is reported, number is reported for what navigation area pressed state in the statistical unit time changed；
Displacement judging unit, for corresponding pressed state change to determine pressing position phase when priority scans by navigation area
To changing distance；
Speed computing unit, number and the relative change distance of pressing position is reported to calculate finger sliding speed for basis.
9. device as claimed in claim 8, it is characterised in that when the navigation direction judging unit includes displacement judge module
When, the displacement judge module and the displacement judging unit reusable.
10. a kind of fingerprint image sensor, it is characterised in that the fingerprint image sensor is included as claim 5 to 9 is any
The direction guider based on fingerprint recognition described in.
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| CN201610518180.1A CN107563262A (en) | 2016-07-01 | 2016-07-01 | Direction air navigation aid, device and fingerprint image sensor based on fingerprint recognition |
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| CN108491156A (en) * | 2018-03-29 | 2018-09-04 | 北京集创北方科技股份有限公司 | Finger print navigation method and device |
| CN113821153A (en) * | 2021-08-23 | 2021-12-21 | 荣耀终端有限公司 | Gesture navigation method, electronic device and readable storage medium |
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| CN105224930A (en) * | 2015-10-19 | 2016-01-06 | 广东欧珀移动通信有限公司 | A kind of method and apparatus of fingerprint recognition |
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| US7313255B2 (en) * | 2003-05-19 | 2007-12-25 | Avago Technologies Ecbu Ip Pte Ltd | System and method for optically detecting a click event |
| CN105447360A (en) * | 2014-07-23 | 2016-03-30 | 敦泰电子有限公司 | Device with fingerprint sensing function |
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| CN108491156A (en) * | 2018-03-29 | 2018-09-04 | 北京集创北方科技股份有限公司 | Finger print navigation method and device |
| CN113821153A (en) * | 2021-08-23 | 2021-12-21 | 荣耀终端有限公司 | Gesture navigation method, electronic device and readable storage medium |
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Application publication date: 20180109 |
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