CN104408410B - The sensing unit scan method and its fingerprint identification method of fingerprint Identification sensor - Google Patents
The sensing unit scan method and its fingerprint identification method of fingerprint Identification sensor Download PDFInfo
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- CN104408410B CN104408410B CN201410659441.2A CN201410659441A CN104408410B CN 104408410 B CN104408410 B CN 104408410B CN 201410659441 A CN201410659441 A CN 201410659441A CN 104408410 B CN104408410 B CN 104408410B
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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
Abstract
The present invention relates to fingerprint recognition fields, disclose a kind of the sensing unit scan method and its fingerprint identification method of fingerprint Identification sensor.The sensing unit scan method of fingerprint Identification sensor in the present invention, comprises the steps of：A. simultaneously scan work at present sensing unit and its surrounding several sensing units, obtain scanning result；B. according to preset order find next sequential working sensing unit and its surrounding several sensing units；C. step A and B are repeated, until the sensing unit of needed work is scanned.The sensing unit number scanned simultaneously with the sensing unit of work at present can be increased, expand the sensing area scanned every time, by improving the scan method of sensing unit, increases the sensing area scanned every time, the sensitivity of fingerprint Identification sensor is improved, user experience is improved.
Description
Technical field
The present invention relates to fingerprint recognition field, more particularly to the sensing unit scan method of fingerprint Identification sensor and its refer to
Line recognition methods.
Background technology
Fingerprint identification technology is a kind of new and high technology that latest developments are got up.Fingerprint recognition be using human body uniqueness with
Constant the features of sex physiology, using fingerprint as one kind " identity card living " of human body or a portable special seal come into
A kind of technology of row identification.
Existing fingerprint detection depend on fingerprint unevenness, that is, on fingerprint valley and a ridge difference, moved using finger
During dynamic, the capacitance variation amount generated between detecting electrode and finger, to extract so-called fingerprint pattern.
The induction region of mainstream fingerprint Identification sensor is generally by chip directly as induction region at present, in induction region
It arranges several sensing units to be scanned, under the premise of controlling hardware manufacturing cost, to reduce chip manufacturing cost, generally
Induction region area can be done small.The testing principle of fingerprint detection sensor is the finger print information of typing tester first, then
Preserve fingerprint total figure, the fingerprint total figure preserved i.e. pre-stored fingerprint figure, again typing and pre-stored fingerprint figure matched.
The Input Process of fingerprint total figure is usually typing several times, then the different zones fingerprint of each typing finger is spliced into finger
Entire fingerprint total figure, this total figure preserved as the picture being matched.All it is only to need in each detection process later
Fingerprint of typing, that is, typing finger sub-fraction fingerprint pattern, then matched with total fingerprint image.
When applied to portable mobile apparatus, the cost of manufacture control of hardware is particularly important, therefore can constantly reduce
Induction region area, eventually leading to may need multiple typing that could unlock, and substantially prolong the time of fingerprint recognition in this way, drop
The low sensitivity of fingerprint Identification sensor reduces user experience.If according to conventional solution route, to ensure fingerprint recognition
Speed, increased induction region area, can but improve hardware cost.
Invention content
The purpose of the present invention is to provide the sensing unit scan methods and its fingerprint recognition of a kind of fingerprint Identification sensor
Method increases the sensing area scanned every time, improves the sensitivity of fingerprint Identification sensor, improves user experience.
In order to solve the above technical problems, embodiments of the present invention provide a kind of sensing unit of fingerprint Identification sensor
Scan method comprises the steps of：
A. simultaneously scan work at present sensing unit and its surrounding several sensing units, obtain scanning result；
B. according to preset order find next sequential working sensing unit and its surrounding several sensing units；
C. repeating said steps A and B, until the sensing unit of needed work is scanned.
Embodiments of the present invention additionally provide a kind of fingerprint identification method of fingerprint Identification sensor, including such as above-mentioned institute
The sensing unit scan method stated, also comprises the steps of：
Fingerprint matching is carried out according to each scanning result obtained in step A.
Embodiments of the present invention additionally provide the fingerprint identification method of another fingerprint Identification sensor, including as above-mentioned
The sensing unit scan method, also comprises the steps of：
The scanning result for obtaining each sensing unit is calculated according to the scanning result obtained in step A；
Fingerprint matching is carried out according to the scanning result of each sensing unit.
Embodiments of the present invention additionally provide a kind of sensing unit scanning circuit of fingerprint Identification sensor, including：
Scan module, for simultaneously scan work at present sensing unit and its surrounding several sensing units, swept
Retouch result；
Searching module, the sensing unit for finding next sequential working according to preset order and its several inductions around
Unit；
Judgment module is used for driver sweep module, until the sensing unit of needed work is scanned.
Embodiments of the present invention additionally provide a kind of fingerprint Identification sensor, including：As above-mentioned fingerprint recognition senses
The sensing unit scanning circuit of device, also includes matching unit, and each scanning result for being obtained according to scan module carries out fingerprint
Matching.
Embodiments of the present invention additionally provide another fingerprint Identification sensor, including：As above-mentioned fingerprint recognition passes
The sensing unit scanning circuit of sensor also includes：
Arithmetic element, the scanning result for being obtained according to scan module calculate the scanning result for obtaining each sensing unit；
Matching unit, for carrying out fingerprint matching according to the scanning result of each sensing unit.
In terms of existing technologies, the main distinction and effect are embodiment of the present invention：It is proposed fingerprint recognition sensing
Surrounding sensing unit is made when progress sensing unit is scanned every time to the novel scan mode of sensing unit in device
It participates in supporting, is scanned jointly, the sensing unit number scanned simultaneously with the sensing unit of work at present can be increased, expand
The sensing area scanned every time increases the sensing area scanned every time, improves fingerprint by improving the scan method of sensing unit
The sensitivity of identification sensor improves user experience.
As a further improvement, when the sensing unit of work at present is a line sensing unit, several senses of the surrounding
It is the sensing unit with current line sensing unit adjacent rows to answer unit；Alternatively, the sensing unit in work at present is that a row incude
When unit, it is described around several sensing units be and the sensing unit when forefront sensing unit adjacent column.
Further illustrate that sensing unit can be the unit scanned every time with row or column, by increasing the induction scanned every time
Unit line number or columns, and then increase while scanning the number of sensing unit, further increase the sensitive of fingerprint Identification sensor
Degree.
As a further improvement, the previous row of current line sensing unit or rear a line described in the adjacent behavior.Before utilization
The sensing unit of a line or rear a line participates in common scan, and while increasing the sensing unit number of common scan, balance is swept
Retouch precision.
As a further improvement, several sensing units are adjacent with the sensing unit of the work at present around described
Several sensing units.Scan adjacent sensing unit and the sensing unit of work at present simultaneously so that obtained scanning result
It is more convenient for subsequent data processing.
As a further improvement, several sensing units can be adjacent with the sensing unit of work at present around described
Eight sensing units.According to the array arrangement of sensing unit, eight sensing units of surrounding are common with the sensing unit of work at present
The region of composition, just region shared by the sensing unit with work at present similarly amplify, the finger print information so obtained is more just
In subsequent data processing.
As a further improvement, when scanning every time, while the sensing unit number scanned can be identical.Setting scanning every time
Sensing unit number it is identical so that region of the same area is scanned every time, to being more convenient for subsequently carrying out fingerprint pattern
Processing.
As a further improvement, the shape of sensing unit can be rectangle, triangle or diamond shape.Sensing unit in the present invention
Shape different shape can be designed as according to actual demand, meet the different demands of user flexible and changeablely, the extension present invention
Application scenarios.
Description of the drawings
Fig. 1 is the method stream according to the sensing unit scan method of fingerprint Identification sensor in first embodiment of the invention
Cheng Tu；
Fig. 2 is the induction region schematic diagram according to the fingerprint Identification sensor in first embodiment of the invention；
Fig. 3 a to Fig. 3 i are the sensing unit scanning sides according to the fingerprint Identification sensor in first embodiment of the invention
The scan mode schematic diagram of method；
Fig. 4 is the single according to the sensing unit scan method of the fingerprint Identification sensor in first embodiment of the invention
Scan schematic diagram；
Fig. 5 is the connection diagram according to sensing unit in second embodiment of the invention and control circuit；
Fig. 6 a to Fig. 6 c are the sensing unit scanning sides according to the fingerprint Identification sensor in second embodiment of the invention
The scan mode schematic diagram of method；
Fig. 7 is shown according to the structure of the sensing unit scanning circuit of fingerprint Identification sensor in fifth embodiment of the invention
It is intended to；
Fig. 8 is the structural schematic diagram according to fingerprint Identification sensor in seventh embodiment of the invention；
Fig. 9 is the structural schematic diagram according to fingerprint Identification sensor in eighth embodiment of the invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the present invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention,
In order to make the reader understand this application better, many technical details are proposed.But even if without these technical details and base
In the various changes and modifications of following embodiment, each claim of the application technical side claimed can also be realized
Case.
Inventor has found that in existing fingerprint Identification sensor, conventional scan mode is since first, last row
Often row scans either first, last row beginning each column gradually scans or centre is bloomed, and past both sides are scanned etc. one by one.It can be found that
The sensing unit number that single participates in scanning is 1, and when per frame scan, each sensing unit has carried out single pass,
The gross area of scanning is not more than the area of entire induction region.In order to collect more effective finger in limited sensing area
Line information improves acquisition precision, that is, the induction region in cellar area is needed to collect more more effective finger print informations,
It can be realized using the scanning gross area is expanded, the area of fixed induction region scanning is bigger, and obtained fingerprint pattern is differentiated
Rate is with regard to higher.
The first embodiment of the present invention is related to a kind of sensing unit scan methods of fingerprint Identification sensor.Its flow is such as
It is specific as follows shown in Fig. 1：
Step 101, at the same scan work at present sensing unit and its surrounding several sensing units, obtain scanning knot
Fruit.
Specifically, when scanning the sensing unit of work at present, while several sensing units around it are scanned, obtained
Simultaneously participate in the common scanning result of the sensing unit of scanning.That is, thoroughly changing existing scan mode, single sweep operation
When, the sensing unit number more than one of common scan is participated in, when single frames scans, single sensing unit at least participates in scanning
Once, the sensing unit that while can also support surrounding takes multiple scan, so under this scan mode, scanned is total
Area will be greater than the area of entire induction region.
Step 102, judge whether the sensing unit of needed work is scanned；If so, terminating present embodiment
In sensing unit scanning process；If it is not, thening follow the steps 103.
Specifically, after the completion of upper primary scanning, need to judge, according to preset scanning sequency, subsequently whether also want
The other sensing units of scanning.
Step 103, according to preset order find next sequential working sensing unit and its surrounding several sensing units,
It is then back to and executes step 101.
Specifically, if judgement also needs to scan other sensing units in step 102, corresponding sensing unit is looked for
Go out, and find out the sensing unit that several need to participate in scanning around it, then repeats step 101, be scanned again.
It should be noted that the sensing unit of work at present is one in present embodiment, below with fingerprint shown in Fig. 2
For the induction region of identification sensor, it is described further：
Assuming that existing scan mode starts to scan from sensing unit (1,1), prolong line direction and scan one by one, that is, sequence
Be scanned one by one by sensing unit (1,2), (1,3) ... (1, n), then from (2,1), (2,2) ... (m, n) is scanned through
At, it is clear that its scanned gross area does not exceed the real area of induction region.
Assuming that in present embodiment, it is mentioned above around several sensing units be sensing unit phase with work at present
Several adjacent sensing units, specifically, using 8 adjacent sensing units as the sense for participating in scanning in present embodiment
Answer unit；Moreover, when scanning every time, while the sensing unit number scanned is identical, that is, scanning simultaneously nine incudes every time
Unit.Its scan mode schematic diagram is as shown in Fig. 3 a to Fig. 3 i, when the 1st region of the 1st row is scanned, as shown in Figure 3a,
The 2nd sensing unit of 2nd row can regard as to the sensing unit of work at present, and it is adjacent thereto around eight sensing units
It is supported, participates in common scan, the sensing unit number of scanning is nine simultaneously at this time, and the region area of single sweep operation is
Nine times of existing scan mode single sweep operation region area；Then when the 2nd region of the 1st row is scanned, as shown in Figure 3b,
The 3rd sensing unit of 2nd row can regard as to the sensing unit of work at present, and with its distance recently around eight inductions
Unit is supported, and common scan is participated in, it is found that in nine sensing units, is swept again there are six sensing unit
It retouches；And so on, when the 3rd region of the 1st row is scanned, scanning schematic diagram is as shown in Figure 3c, in the 1st area of the 2nd row
When domain is scanned, scanning schematic diagram is as shown in Figure 3d, until final scanning is completed.In entire single frames scanning process, remove
Four, vertex sensing unit has only carried out outside single pass work, other sensing units have carried out Multiple-Scan, so that
The gross area scanned every time increases, and increases the sensitivity of fingerprint Identification sensor.
It is noted that in present embodiment sensing unit length × it is wide can be 50um × 50um.Due to fingerprint valley
Width with ridge is 200-400um, and the area of conventional fingerprint identification sensing unit is 75um-50um at present, that is to say, that one
Ridge and the width of paddy cover 5 or so sensing units, and conventional sweep single pass region is 50um*50um, utilizes this size
Sensing unit it is identical as existing conventional sensing unit size, convenient for the present invention be widely popularized.
In addition, the shape of sensing unit is rectangle in present embodiment, and it is simple in structure, it is easy to produce.In practical applications,
The shape of sensing unit can also be triangle, diamond shape or other shapes, will not enumerate herein.Sensing unit in the present invention
Shape different shape can be designed as according to actual demand, meet the different demands of user flexible and changeablely, the extension present invention
Application scenarios.
In terms of existing technologies, the main distinction and effect are present embodiment：It proposes in fingerprint Identification sensor
Surrounding sensing unit is set to participate in when progress sensing unit is scanned every time the novel scan mode of sensing unit
It supports, is scanned jointly, the sensing unit number scanned simultaneously with the sensing unit of work at present can be increased, expand each
The sensing area of scanning increases the sensing area scanned every time, improves fingerprint recognition by improving the scan method of sensing unit
The sensitivity of sensor improves user experience.In addition, in present embodiment single sweep operation region just with the induction of work at present
Region shared by unit is similarly amplified, meanwhile, the region area scanned every time is identical, after the finger print information so obtained is more convenient for
Continuous data processing.
It is noted that in practical applications, it can be using what is mentioned in present embodiment, single participates in the sense of scanning
The mode of unit number nine is answered, single sweep operation schematic diagram as shown in Figure 4 can be utilized, that is, only Current Scan is utilized to incude
Each three sensing units of left and right sides of unit participate in scanning, and the region of single sweep operation is I-shaped, reduces single and participates in scanning
Sensing unit number, reduce system power dissipation.It is, of course, also possible to be combined using other shapes, will not enumerate herein.
Second embodiment of the present invention is related to a kind of sensing unit scan method of fingerprint Identification sensor.Second implements
Mode is roughly the same with first embodiment, is in place of the main distinction：In the first embodiment, the induction list of work at present
Member is one.And in second embodiment of the invention, the sensing unit of work at present is a line.The list scanned every time with behavior
Position further increases fingerprint Identification sensor in embodiment of the present invention by increasing the sensing unit number scanned every time
Sensitivity.
It should be noted that in practical applications, while when scanning a line sensing unit, although can be single to each induction
Member is all connected with a control circuit (control circuit is to be scanned, and obtains the circuit of scanning result), but can also be by each induction
The mode of unit as shown in Figure 5 is attached, and the quantity of control circuit is reduced with this, reduces cost.It namely can will be same
The sensing unit connection of row shares a control circuit, as sensing unit A1, sensing unit B1 ... sensing units G1 lead to respectively
Cross switch 511, switch 521 ... switch 531 connects control circuit 501, sensing unit A2, sensing unit B2 ... sensing units
G2 respectively by switch 512, switch 522 ... switch 532 connect control circuit 502, other connections are similar, when need detection A
When row sensing unit, then the switch 51n that turns off the switch 511, switch 512 ... is closed other switches.Obviously, such connection side
The connection type that formula is all connected with a control circuit with each sensing unit is compared, and the use number of control circuit is greatly reduced
Amount.
It is noted that can also be both connected to all sensing units in one control circuit, when scanning, passes through
The closure for controlling each switch opens sequential completion scanning step, but in this case, can extend sweep time, so in practical application
In, it can be as needed, it balances hardware cost and sweep speed is designed.
Specifically, the sensing unit of work at present be a line sensing unit when, around several sensing units be
And it is previous row adjacent thereto or rear a line with the sensing unit of current line sensing unit adjacent rows, is worked as below with scanning
Move ahead sensing unit when, while for scanning its next line sensing unit, being specifically described：
When with sensing unit behavior scan unit, scan mode schematic diagram is as shown in Fig. 6 a to Fig. 6 c, first, such as Fig. 6 a
Shown, the sensing unit behavior A rows of work at present, then several sensing units are B row sensing units around it, so first
When secondary scanning, that is, need all sensing units for scanning A rows and B rows simultaneously；Then, as shown in Figure 6 b, the induction of work at present
Cell row becomes B rows, then when second of scanning, that is, needs all sensing units for scanning B rows and C rows simultaneously；And so on, such as
Shown in Fig. 6 c, until the sensing unit of work at present is F rows (assuming that row second from the bottom of F behavior induction regions), simultaneously at this time
The sensing unit of scanning is F rows and all sensing unit of G rows (assuming that last column of G behavior induction regions).It needs to illustrate
, it can be in this, as the end of scanning process, that is, the independent scanning of G rows is no longer carried out, to save sweep time, when
The scanning of G rows can also be so carried out again.
It should be noted that rear a line sensing unit of work at present sensing unit row is scanned while removing mentioned above,
The previous row sensing unit of work at present sensing unit row can also be scanned simultaneously, and scan method is roughly the same, no longer superfluous herein
It states.
In addition, in practical applications, in addition to carrying out sweeping for sensing unit as unit of a line using in present embodiment
It retouches, can also be scanned for unit with a row, or be scanned according to the other modes of design requirement, method substantially phase
Together, details are not described herein.
Third embodiment of the present invention is related to a kind of fingerprint identification method of fingerprint Identification sensor.It includes above-mentioned
The sensing unit scan method of any one fingerprint Identification sensor in one embodiment or second embodiment, in addition to this,
Also comprise the steps of：
Fingerprint matching is carried out according to obtained each scanning result.
Specifically, be exactly scanning in need sensing unit it is scanned after, its result is directly referred to
Line matches.
For in the way of being scanned by row unit, with reference to Fig. 6 a to Fig. 6 c, after scanning A rows and B row sensing units
Obtained scanning result is " A+B ", and it is " B+C " to scan the scanning result obtained after B rows and C row sensing units, and so on, it sweeps
It is " F+G " to retouch the scanning result obtained after F rows and G row sensing units；Then, directly using " A+B " as the scanning result of A rows
A ' is known using " F+G " as the scanning result F ' of F rows according to existing fingerprint using " B+C " as the scanning result B ' of B rows
Other data processing method can carry out subsequent fingerprint matching.
The 4th embodiment of the present invention is related to a kind of fingerprint identification method of fingerprint Identification sensor.Present embodiment is
That is done on the basis of third embodiment is further improved, and is that scanning result is directly carried out fingerprint in third embodiment
Matching, and in present embodiment, it needs first to calculate scanning result, obtains the corresponding scanning result of each sensing unit, so
The scanning result being calculated is subjected to fingerprint matching again afterwards.So that scanning result is more accurate, the accurate of fingerprint matching is improved
Degree.
Specifically, scanning in need sensing unit it is scanned after, also comprise the steps of：
The scanning result for obtaining each sensing unit is calculated according to obtained scanning result；According to the scanning knot of each sensing unit
Fruit carries out fingerprint matching.
Still it in the way of being scanned by row unit, is illustrated with reference to Fig. 6 a to Fig. 6 c：It is being scanned
As a result after " A+B ", " B+C " ... " F+G ", the scanning of G row sensing units is individually carried out, it is single also just individually to have obtained the induction of G rows
The corresponding scanning result " G " of member is retrodicted upwards according to the result " G ", you can obtains the corresponding scanning of F rows by " F+G "-" G "
As a result " F ", and so on, the corresponding scanning result " A " of A row sensing units is finally obtained, in this way using by calculating acquisition
Scan " A ", " B " ... " G " carries out subsequent fingerprint matching, it is clear that more meet actual scanning result, the finger carried out with this
Line matching also will more precisely.
The step of various methods divide above, be intended merely to describe it is clear, when realization can be merged into a step or
Certain steps are split, multiple steps are decomposed into, as long as including identical logical relation, all in the protection domain of this patent
It is interior；To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
Fifth embodiment of the invention is related to a kind of sensing unit scanning circuit of fingerprint Identification sensor, as shown in fig. 7,
Including：
Scan module, for simultaneously scan work at present sensing unit and its surrounding several sensing units, swept
Retouch result.Specifically, several sensing units of surrounding can be adjacent with the sensing unit of work at present in present embodiment
Several sensing units.
Searching module, the sensing unit for finding next sequential working according to preset order and its several inductions around
Unit.
Judgment module is used for driver sweep module, until the sensing unit of needed work is scanned.
In addition, when being scanned every time in present embodiment, the sensing unit number of work at present is 1, moreover, scanning simultaneously
Sensing unit number it is identical.
It is noted that in present embodiment sensing unit length × it is wide can be 50um × 50um.
In addition, the shape of sensing unit is rectangle in present embodiment, and it is simple in structure, it is easy to produce.In practical applications,
The shape of sensing unit can also be triangle, diamond shape or other shapes, will not enumerate herein.Sensing unit in the present invention
Shape different shape can be designed as according to actual demand, meet the different demands of user flexible and changeablely, the extension present invention
Application scenarios.
It is not difficult to find that present embodiment is system embodiment corresponding with first embodiment, present embodiment can be with
First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment
Effect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in
In first embodiment.
It is noted that each module involved in present embodiment is logic module, and in practical applications, one
A logic unit can be a physical unit, can also be a part for a physical unit, can also be with multiple physics lists
The combination of member is realized.In addition, in order to protrude the innovative part of the present invention, it will not be with solution institute of the present invention in present embodiment
The technical issues of proposition, the less close unit of relationship introduced, but this does not indicate that there is no other single in present embodiment
Member.
Sixth embodiment of the invention is related to a kind of sensing unit scanning circuit of fingerprint Identification sensor.6th embodiment party
Formula is roughly the same with the 5th embodiment, is in place of the main distinction：In the 5th embodiment, the sensing unit of work at present
It is one.And in sixth embodiment of the invention, the sensing unit of work at present is a line.The list scanned every time with behavior
Position further increases fingerprint Identification sensor in embodiment of the present invention by increasing the sensing unit number scanned every time
Sensitivity.
Specifically, the sensing unit of work at present is a line sensing unit in present embodiment, then several around it
A sensing unit is the sensing unit with current line sensing unit adjacent rows.
In addition, the sensing unit of work at present can be a row sensing unit, then several sensing units are around it
With the sensing unit when forefront sensing unit adjacent column.
Since second embodiment is corresponded with present embodiment, present embodiment can be mutual with second embodiment
Match implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement second
The attainable technique effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetition
It states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.
Seventh embodiment of the invention is related to a kind of fingerprint Identification sensor.To implement as shown in figure 8, it includes the above-mentioned 5th
The sensing unit scanning circuit for the fingerprint Identification sensor mentioned in mode or sixth embodiment, additionally it contained matching is single
Member, each scanning result for being obtained according to scan module carry out fingerprint matching.
Since third embodiment is corresponded with present embodiment, present embodiment can be mutual with third embodiment
Match implementation.The relevant technical details mentioned in third embodiment are still effective in the present embodiment, implement in third
The attainable technique effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetition
It states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in third embodiment.
Eighth embodiment of the invention is related to a kind of fingerprint Identification sensor.To implement as shown in figure 9, it includes the above-mentioned 5th
The sensing unit scanning circuit for the fingerprint Identification sensor mentioned in mode or sixth embodiment, additionally it contained：
Arithmetic element, the scanning result for being obtained according to scan module calculate the scanning result for obtaining each sensing unit.
Matching unit, for carrying out fingerprint matching according to the scanning result of each sensing unit.
Since the 4th embodiment is corresponded with present embodiment, present embodiment can be mutual with the 4th embodiment
Match implementation.The relevant technical details mentioned in 4th embodiment are still effective in the present embodiment, implement the 4th
The attainable technique effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetition
It states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the 4th embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (15)
1. a kind of sensing unit scan method of fingerprint Identification sensor, which is characterized in that comprise the steps of：
A. simultaneously scan work at present sensing unit and its surrounding several sensing units, obtain the induction for simultaneously participating in scanning
The common scanning result of unit；
B. according to preset order find next sequential working sensing unit and its surrounding several sensing units；
C. repeating said steps A and B, until the sensing unit of needed work is scanned.
2. the sensing unit scan method of fingerprint Identification sensor according to claim 1, which is characterized in that in current work
The sensing unit of work be a line sensing unit when, it is described around several sensing units be and current line sensing unit adjacent rows
Sensing unit；Alternatively,
Work at present sensing unit be a row sensing unit when, it is described around several sensing units be with when forefront incudes
The sensing unit of unit adjacent column.
3. the sensing unit scan method of fingerprint Identification sensor according to claim 2, which is characterized in that described adjacent
The previous row of current line sensing unit or rear a line described in behavior.
4. the sensing unit scan method of fingerprint Identification sensor according to claim 2, which is characterized in that described adjacent
It is classified as the previous column when forefront sensing unit or latter row.
5. the sensing unit scan method of fingerprint Identification sensor according to claim 1, which is characterized in that around described
Several sensing units are several sensing units adjacent with the sensing unit of the work at present.
6. the sensing unit scan method of fingerprint Identification sensor according to claim 5, which is characterized in that around described
Several sensing units are eight sensing units adjacent with the sensing unit of the work at present.
7. the sensing unit scan method of fingerprint Identification sensor according to claim 1, which is characterized in that scanning every time
When, while the sensing unit number scanned is identical.
8. the sensing unit scan method of fingerprint Identification sensor according to claim 1, which is characterized in that the induction
The shape of unit is rectangle, triangle or diamond shape.
9. a kind of fingerprint identification method of fingerprint Identification sensor, which is characterized in that comprising any one in such as claim 1 to 8
Sensing unit scan method described in, also comprises the steps of：
Fingerprint matching is carried out according to each scanning result obtained in step A.
10. a kind of fingerprint identification method of fingerprint Identification sensor, which is characterized in that comprising any one in such as claim 1 to 8
Sensing unit scan method described in, also comprises the steps of：
The scanning result for obtaining each sensing unit is calculated according to the scanning result obtained in step A；
Fingerprint matching is carried out according to the scanning result of each sensing unit.
11. a kind of sensing unit scanning circuit of fingerprint Identification sensor, which is characterized in that include：
Scan module, for simultaneously scan work at present sensing unit and its surrounding several sensing units, obtain scanning knot
Fruit；
Searching module, the sensing unit and its several inductions around for finding next sequential working according to preset order are single
Member；
Judgment module is used for driver sweep module, until the sensing unit of needed work is scanned.
12. the sensing unit scanning circuit of fingerprint Identification sensor according to claim 11, which is characterized in that current
The sensing unit of work be a line sensing unit when, it is described around several sensing units be and current line sensing unit adjacent rows
Sensing unit；Alternatively,
Work at present sensing unit be a row sensing unit when, it is described around several sensing units be with when forefront incudes
The sensing unit of unit adjacent column.
13. the sensing unit scanning circuit of fingerprint Identification sensor according to claim 11, which is characterized in that the week
It is several sensing units adjacent with the sensing unit of the work at present to enclose several sensing units.
14. a kind of fingerprint Identification sensor, which is characterized in that include：Such as any one of claim 11 to claim 13
The sensing unit scanning circuit of the fingerprint Identification sensor includes also matching unit, for what is obtained according to scan module
Each scanning result carries out fingerprint matching.
15. a kind of fingerprint Identification sensor, which is characterized in that include：Such as any one of claim 11 to claim 13
The sensing unit scanning circuit of the fingerprint Identification sensor also includes：
Arithmetic element, the scanning result for being obtained according to scan module calculate the scanning result for obtaining each sensing unit；
Matching unit, for carrying out fingerprint matching according to the scanning result of each sensing unit.
Priority Applications (1)
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| TWI736688B (en) * | 2016-11-17 | 2021-08-21 | 瑞典商指紋卡公司 | Fingerprint sensing using measuring configurations with different principal directions of extensions |
| CN107016338B (en) * | 2017-02-28 | 2019-10-01 | Oppo广东移动通信有限公司 | The method of mobile terminal, fingerprint mould group and fingerprint false-touch prevention |
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| CN103745194A (en) * | 2013-12-20 | 2014-04-23 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device and mobile terminal |
| CN103761015A (en) * | 2013-12-30 | 2014-04-30 | 深圳贝特莱电子科技有限公司 | Scanning method and system for capacitive touch screen control chip |
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| CN103745194A (en) * | 2013-12-20 | 2014-04-23 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device and mobile terminal |
| CN103761015A (en) * | 2013-12-30 | 2014-04-30 | 深圳贝特莱电子科技有限公司 | Scanning method and system for capacitive touch screen control chip |
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