CN104978572A - Fingerprint collection method and terminal - Google Patents
Fingerprint collection method and terminal Download PDFInfo
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- CN104978572A CN104978572A CN201510381178.XA CN201510381178A CN104978572A CN 104978572 A CN104978572 A CN 104978572A CN 201510381178 A CN201510381178 A CN 201510381178A CN 104978572 A CN104978572 A CN 104978572A
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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
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Abstract
An embodiment of the invention provides a fingerprint collection method and terminal. The method comprises the following steps of: receiving a fingerprint collection instruction, and starting a first collecting window of a fingerprint sensor according to the instruction; controlling the first collecting window to collect fingerprints according to a preset time interval; when detecting a collected object in contact with the fingerprint sensor, collecting the fingerprint of the collected object through the first collecting window to generate a first image; and judging whether the first image is an effective fingerprint image, if so, starting a second collecting window of the fingerprint sensor, and collecting the fingerprint of the collected object through the second collecting window and the first collecting window to generate a second image. With the adoption of the fingerprint collection method and terminal, the electricity consumption of the fingerprint sensor in the terminal can be reduced, and the cruising power of the terminal is improved.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of fingerprint collecting method and terminal.
Background technology
Along with the development of infotech and electronic technology, terminal (such as: mobile phone, flat board etc.) is closely bound up with daily life, because terminal can realize various function, such as make a phone call, take pictures, store Miscellaneous Documents, instant messaging, on-line payment etc., the dependence of people to terminal is more and more higher, terminal saves all kinds of privacy information, and this just makes the security of terminal particularly important.In prior art, installed fingerprint sensor in the terminal, because fingerprint is the lines of the rough and uneven in surface formation of finger surface skin, and fingerprint characteristic has uniqueness, stability feature, therefore fingerprint sensor can be used to identify user identity, to ensure the security of terminal.
At present, when existing fingerprint sensor is installed in terminal, generally all in outmost surface, glass cover-plate to be installed, or be arranged at the below of monolithic glass panel, but like this due to every glass cover-plate, need to improve power consumption and just can penetrate the fingerprint that glass cover-plate recognizes user, need constantly to gather image to prevent user that finger is put into nothing response on sensor simultaneously, if because maloperation starts fingerprint sensor, fingerprint sensor can gather image all the time, add the power consumption of terminal, reduce the flying power of terminal.
Summary of the invention
The embodiment of the present invention provides a kind of fingerprint collecting method and terminal, can reduce the power consumption of fingerprint sensor in terminal, improves the flying power of terminal.
Embodiment of the present invention first aspect provides a kind of fingerprint collecting method, comprising:
Receive the instruction of fingerprint collecting and open the first acquisition window of fingerprint sensor according to instruction;
Control the first acquisition window and carry out fingerprint collecting according to prefixed time interval;
When the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object;
Judge whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.
Embodiment of the present invention second aspect provides a kind of fingerprint collecting method, comprising:
Receive the instruction of fingerprint collecting and open the first acquisition window of fingerprint sensor according to instruction;
Control the first acquisition window and carry out fingerprint collecting;
When the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object;
Judge whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.
The embodiment of the present invention third aspect provides a kind of terminal, comprising:
Open unit, for receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction;
Control module, carries out fingerprint collecting for controlling the first acquisition window according to prefixed time interval;
Collecting unit, for when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object;
Collecting unit, also for judging whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
Embodiment of the present invention fourth aspect provides a kind of terminal, comprising:
Open unit, for receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction;
Control module, carries out fingerprint collecting for controlling the first acquisition window;
Collecting unit, also for judging whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
In embodiments of the present invention, by receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction, control the first acquisition window and carry out fingerprint collecting according to prefixed time interval, when the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object, judge whether the first image is effective fingerprint image, if, then open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Image is gathered according to prefixed time interval by the first acquisition window of fingerprint sensor, decrease fingerprint sensor in prior art and gather the electricity that image consumes all the time, and then improve the flying power of terminal, in addition, after determining that the first image is effective fingerprint image, terminal gathers fingerprint by the first acquisition window and the second acquisition window, this ensure that the accuracy gathering fingerprint.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of fingerprint collecting method that the embodiment of the present invention provides;
Fig. 2 is the schematic flow sheet of the another kind of fingerprint collecting method that the embodiment of the present invention provides;
Fig. 3 is the application schematic diagram of a kind of fingerprint sensor that the embodiment of the present invention provides;
Fig. 4 is the schematic flow sheet of another fingerprint collecting method that the embodiment of the present invention provides;
Fig. 5 is the structural representation of a kind of terminal that the embodiment of the present invention provides;
Fig. 6 is the structural representation of the another kind of terminal that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The terminal that the embodiment of the present invention relates to can be any equipment possessing communication and memory function, such as: panel computer, mobile phone, electronic reader, telepilot, personal computer (Personal Computer, PC), notebook computer, mobile unit, Web TV, wearable device etc. have the smart machine of network function.
Below in conjunction with accompanying drawing 1-accompanying drawing 4, the fingerprint collecting method that the embodiment of the present invention provides is described in detail.
Refer to Fig. 1, for embodiments providing a kind of schematic flow sheet of fingerprint collecting method.As shown in Figure 1, the method for the embodiment of the present invention can comprise the following steps S101-step S104.
S101, receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor according to instruction.
Concrete, terminal receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor according to instruction.Wherein, fingerprint collecting instruction can be the fingerprint collecting instruction of fingerprint unlock screen, fingerprint logs in the fingerprint collecting instruction etc. that the fingerprint collecting instruction of software or fingerprint pay.Fingerprint sensor is the dedicated devices obtaining fingerprint image, and fingerprint sensor can be divided into optical fingerprint sensor, semicoductor capacitor sensor, semiconductor heat dependent sensor, semiconductor pressure sensor etc.The pixel for gathering fingerprint has been covered with in fingerprint sensor, first acquisition window comprises the acquisition window of the first quantity, wherein, acquisition window is made up of the pixel of predetermined number adjacent in fingerprint sensor, in first acquisition window, the position of each acquisition window does not limit in embodiments of the present invention, and such as, 8*8 pixel forms an acquisition window, select the acquisition window of 12 8*8 as the first acquisition window, these 12 acquisition windows are distributed in fingerprint sensor equably.When terminal receives the instruction of fingerprint collecting, open the first acquisition window of fingerprint sensor.
S102, controls the first acquisition window and carries out fingerprint collecting according to prefixed time interval.
Concrete, terminal control first acquisition window carries out fingerprint collecting according to prefixed time interval.Compared in prior art, when receiving the instruction of fingerprint collecting, open whole pixels of fingerprint sensor, the embodiment of the present invention not only can reduce the power consumption of terminal by the mode offering the first acquisition window, the mode that can also gather fingerprint by arranging the first acquisition window according to prefixed time interval reduces power consumption of terminal.Such as, when terminal be misused or contact by mistake light screen time, prior art opens fingerprint sensor and control fingerprint sensor to gather image all the time, if screen lighting time is when being 10 minutes, screen just can be closed after 10 min, fingerprint sensor needs the image always gathering 10 minutes in this course, and the embodiment of the present invention can by control first acquisition window according to prefixed time interval (such as, 10ms) carry out collection image, decrease the power consumption of terminal.
S103, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object.
Concrete, terminal, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object, in order to judge whether to carry out collection fingerprint according to the first image.
S104, judges whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
Concrete, whether terminal judges first image is effective fingerprint image, when the first image is effective fingerprint image, opens the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Second acquisition window comprises the acquisition window of the second quantity, or the second acquisition window is made up of the whole pixels in fingerprint sensor except the pixel that the first acquisition window comprises.When the first image is effective fingerprint image, need the image gathering collected correspondence, in order to the accuracy of gathered image, terminal starts the first acquisition window and the first acquisition window, at this moment, the first acquisition window is not gather according to prefixed time interval, but is in acquisition state all the time, generate the second image, in order to verify the second image.
In embodiments of the present invention, by receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction, control the first acquisition window and carry out fingerprint collecting according to prefixed time interval, when the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object, judge whether the first image is effective fingerprint image, if, then open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Image is gathered according to prefixed time interval by the first acquisition window of fingerprint sensor, decrease fingerprint sensor in prior art and gather the electricity that image consumes all the time, and then improve the flying power of terminal, in addition, after determining that the first image is effective fingerprint image, terminal gathers fingerprint by the first acquisition window and the second acquisition window, this ensure that the accuracy gathering fingerprint.
Refer to Fig. 2, for embodiments providing the schematic flow sheet of another kind of fingerprint collecting method.As shown in Figure 2, the method for the embodiment of the present invention can comprise the following steps S201-step S206.
S201, receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor according to instruction.
Concrete, terminal receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor according to instruction.In feasible scheme, terminal receives the instruction of fingerprint collecting, and according to instruction by supplying electric-opening first acquisition window to the first acquisition window in fingerprint sensor.Wherein, fingerprint collecting instruction can be the fingerprint collecting instruction of fingerprint unlock screen, fingerprint logs in the fingerprint collecting instruction etc. that the fingerprint collecting instruction of software or fingerprint pay.Fingerprint sensor is the dedicated devices obtaining fingerprint image, and fingerprint sensor can be divided into optical fingerprint sensor, semicoductor capacitor sensor, semiconductor heat dependent sensor, semiconductor pressure sensor etc.The pixel for gathering fingerprint has been covered with in fingerprint sensor, first acquisition window comprises the acquisition window of the first quantity, wherein, acquisition window is made up of the pixel of predetermined number adjacent in fingerprint sensor, in first acquisition window, the position of each acquisition window does not limit in embodiments of the present invention, and such as, 8*8 pixel forms an acquisition window, select the acquisition window of 12 8*8 as the first acquisition window, these 12 acquisition windows are distributed in fingerprint sensor equably.When terminal receives the instruction of fingerprint collecting, open the first acquisition window of fingerprint sensor.
S202, controls the first acquisition window and carries out fingerprint collecting according to prefixed time interval.
Concrete, terminal control first acquisition window carries out fingerprint collecting according to prefixed time interval.Compared in prior art, when receiving the instruction of fingerprint collecting, open whole pixels of fingerprint sensor, the embodiment of the present invention not only can reduce the power consumption of terminal by the mode offering the first acquisition window, the mode that can also gather fingerprint by arranging the first acquisition window according to prefixed time interval reduces power consumption of terminal.Such as, when terminal be misused or contact by mistake light screen time, prior art opens fingerprint sensor and control fingerprint sensor to gather image all the time, if screen lighting time is when being 10 minutes, screen just can be closed after 10 min, fingerprint sensor needs the image always gathering 10 minutes in this course, and the embodiment of the present invention can by control first acquisition window according to prefixed time interval (such as, 10ms) carry out collection image, decrease the power consumption of terminal.
S203, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object.
Concrete, terminal, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object, in order to judge whether to carry out collection fingerprint according to the first image.
S204, calculates the gray-scale value that the first image is corresponding.
Concrete, terminal according to the first Computer image genration grey level histogram, and calculates gray-scale value corresponding to the first image according to grey level histogram.The horizontal ordinate of grey level histogram be gray level (such as, 32 grades, 64 grades, 256 grades etc.), ordinate is the frequency that this gray level occurs, number or the frequency of the pixel in the first image with certain gray level can be indicated, in order to determine whether that needs carry out collection fingerprint according to the gray-scale value of the first image.
S205, when the gray-scale value that the first image is corresponding is more than or equal to first threshold, then determines that the first image is effective fingerprint image.
Concrete, when the gray-scale value that the first image is corresponding is more than or equal to first threshold, then terminal determines that the first image is effective fingerprint image.In feasible scheme, the scheme calculating the gray-scale value of the first image can be: on the grey level histogram transverse axis coordinate of the first image, according to area ratio, left and right respectively clips 3%.Middle transverse axis gray value differences corresponding to 94% area is greater than 25, effective fingerprint image can be defined as, this scheme is only a citing, and the concrete gray-scale value corresponding according to the first image determines that whether the first image is the computation process of effective fingerprint image, and the embodiment of the present invention does not limit.Be understandable that, when the gray-scale value that the first image is corresponding is less than first threshold, then determine that the first image is not effective fingerprint image.
S206, when the first image is effective fingerprint image, opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
Concrete, when the first image is effective fingerprint image, by carrying out confession electric-opening second acquisition window to the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Wherein, the second acquisition window comprises the acquisition window of the second quantity, or the second acquisition window is made up of the whole pixels in fingerprint sensor except the pixel that the first acquisition window comprises.When the first image is effective fingerprint image, need the image gathering collected correspondence, in order to the accuracy of gathered image, terminal starts the first acquisition window and the first acquisition window, at this moment, the first acquisition window is not gather according to prefixed time interval, is be in acquisition state all the time, generate the second image, in order to verify the second image.Be understandable that, when the first image is not effective fingerprint image, terminal does not start the second acquisition window, in optional scheme, the first acquisition window of fingerprint sensor can be closed, in order to reduce power consumption of terminal.
Composition graphs 3, for fingerprint sensor involved in the embodiment of the present invention provides a feasible instantiation, as shown in Figure 3, fingerprint sensor 100 comprises the first acquisition window 101 and the second acquisition window 102.Shown in Fig. 3 a 12 identical acquisition window constitutes the first acquisition window 101, and these 12 acquisition windows are uniformly distributed in fingerprint sensor 100, when there is the operating of contacts to fingerprint sensor, can not cause because operating of contacts region does not have acquisition window and gather unsuccessful, in fingerprint sensor 100 except the first acquisition window 101, be the second acquisition window 102.Terminal receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor 100 according to instruction; Control the first acquisition window 101 and carry out fingerprint collecting according to prefixed time interval; When the collected object of contact fingerprint sensor 100 being detected, by the first acquisition window 101, fingerprint collecting is carried out to generate the first image to collected object; Judge whether the first image is effective fingerprint image, if, then open the second acquisition window 102 of fingerprint sensor, and by the second acquisition window 102 and the first acquisition window 101, fingerprint collecting is carried out to generate the second image to collected object, and the embodiment of the present invention does not limit the first acquisition window of fingerprint sensor and the second acquisition window.
In embodiments of the present invention, by receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction, control the first acquisition window and carry out fingerprint collecting according to prefixed time interval, when the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object, judge whether the first image is effective fingerprint image, if, then open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Image is gathered according to prefixed time interval by the first acquisition window of fingerprint sensor, decrease fingerprint sensor in prior art and gather the electricity that image consumes all the time, and then improve the flying power of terminal, in addition, after determining that the first image is effective fingerprint image, terminal gathers fingerprint by the first acquisition window and the second acquisition window, this ensure that the accuracy gathering fingerprint.
Refer to Fig. 4, for embodiments providing the schematic flow sheet of another fingerprint collecting method.As shown in Figure 4, the method for the embodiment of the present invention can comprise the following steps S401-step S404.
S401, receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor according to instruction.
Concrete, terminal receives the instruction of fingerprint collecting and opens the first acquisition window of fingerprint sensor according to instruction.In feasible scheme, terminal receives the instruction of fingerprint collecting, and according to instruction by supplying electric-opening first acquisition window to the first acquisition window in fingerprint sensor.Wherein, fingerprint collecting instruction can be the fingerprint collecting instruction of fingerprint unlock screen, fingerprint logs in the fingerprint collecting instruction etc. that the fingerprint collecting instruction of software or fingerprint pay.Fingerprint sensor is the dedicated devices obtaining fingerprint image, and fingerprint sensor can be divided into optical fingerprint sensor, semicoductor capacitor sensor, semiconductor heat dependent sensor, semiconductor pressure sensor etc.The pixel for gathering fingerprint has been covered with in fingerprint sensor, first acquisition window comprises the acquisition window of the first quantity, wherein, acquisition window is made up of the pixel of predetermined number adjacent in fingerprint sensor, in first acquisition window, the position of each acquisition window does not limit in embodiments of the present invention, and such as, 8*8 pixel forms an acquisition window, select the acquisition window of 12 8*8 as the first acquisition window, these 12 acquisition windows are distributed in fingerprint sensor equably.When terminal receives the instruction of fingerprint collecting, open the first acquisition window of fingerprint sensor.
S402, controls the first acquisition window and carries out fingerprint collecting.
Concrete, terminal control first acquisition window carries out fingerprint collecting, and the mode that can gather fingerprint like this by arranging the first acquisition window reduces power consumption of terminal.Such as, when terminal be misused or contact by mistake light screen time, prior art opens fingerprint sensor and control fingerprint sensor to gather image all the time, if screen lighting time is when being 10 minutes, screen just can be closed after 10 min, fingerprint sensor needs the image always gathering 10 minutes in this course, and the embodiment of the present invention can carry out collection image by control first acquisition window, decreases the power consumption of terminal.
S403, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object.
Concrete, terminal, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object, in order to judge whether to carry out collection fingerprint according to the first image.
S404, judges whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
Concrete, whether terminal judges first image is effective fingerprint image, when the first image is effective fingerprint image, by carrying out confession electric-opening second acquisition window to the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Wherein, the second acquisition window comprises the acquisition window of the second quantity, or the second acquisition window is made up of the whole pixels in fingerprint sensor except the pixel that the first acquisition window comprises.When the first image is effective fingerprint image, need the image gathering collected correspondence, in order to the accuracy of gathered image, terminal starts the first acquisition window and the first acquisition window, generates the second image, in order to verify the second image.Be understandable that, when the first image is not effective fingerprint image, terminal does not start the second acquisition window, in optional scheme, the first acquisition window of fingerprint sensor can be closed, in order to reduce power consumption of terminal.
In feasible scheme, according to the first Computer image genration grey level histogram, and gray-scale value corresponding to the first image can be calculated according to grey level histogram; When the gray-scale value that the first image is corresponding is more than or equal to first threshold, then determine that the first image is effective fingerprint image.
In embodiments of the present invention, by receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction, control the first acquisition window and carry out fingerprint collecting, when the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object, judge whether the first image is effective fingerprint image, if, then open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Image is gathered by the first acquisition window of fingerprint sensor, decrease fingerprint sensor in prior art and gather the electricity that image consumes all the time, and then improve the flying power of terminal, in addition, after determining that the first image is effective fingerprint image, terminal gathers fingerprint by the first acquisition window and the second acquisition window, this ensure that the accuracy gathering fingerprint.
Below in conjunction with accompanying drawing 5-accompanying drawing 6, the terminal that the embodiment of the present invention provides is described in detail.It should be noted that, the terminal shown in accompanying drawing 5-accompanying drawing 6, for performing the method for Fig. 1 of the present invention-embodiment illustrated in fig. 4, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, concrete ins and outs do not disclose, and please refer to the embodiment shown in Fig. 1-Fig. 4 of the present invention.
Refer to Fig. 5, for embodiments providing a kind of structural representation of terminal.As shown in Figure 5, the terminal 1 of the embodiment of the present invention can comprise: open unit 11, control module 12 and collecting unit 13.
Open unit 11, for receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction.
In specific implementation, open unit 11 and receive the instruction of fingerprint collecting and open the first acquisition window of fingerprint sensor according to instruction.Wherein, fingerprint collecting instruction can be the fingerprint collecting instruction of fingerprint unlock screen, fingerprint logs in the fingerprint collecting instruction etc. that the fingerprint collecting instruction of software or fingerprint pay.Fingerprint sensor is the dedicated devices obtaining fingerprint image, and fingerprint sensor can be divided into optical fingerprint sensor, semicoductor capacitor sensor, semiconductor heat dependent sensor, semiconductor pressure sensor etc.The pixel for gathering fingerprint has been covered with in fingerprint sensor, first acquisition window comprises the acquisition window of the first quantity, wherein, acquisition window is made up of the pixel of predetermined number adjacent in fingerprint sensor, in first acquisition window, the position of each acquisition window does not limit in embodiments of the present invention, and such as, 8*8 pixel forms an acquisition window, select the acquisition window of 12 8*8 as the first acquisition window, these 12 acquisition windows are distributed in fingerprint sensor equably.When unlatching unit 11 receives the instruction of fingerprint collecting, open the first acquisition window of fingerprint sensor.
In feasible scheme, open the instruction that unit 11 receives fingerprint collecting, and according to instruction by supplying electric-opening first acquisition window to the first acquisition window in fingerprint sensor.
Control module 12, controls the first acquisition window and carries out fingerprint collecting according to prefixed time interval.
In specific implementation, control module 12 controls the first acquisition window and carries out fingerprint collecting according to prefixed time interval.Compared in prior art, when receiving the instruction of fingerprint collecting, open whole pixels of fingerprint sensor, the embodiment of the present invention not only can reduce the power consumption of terminal by the mode offering the first acquisition window, the mode that can also gather fingerprint by arranging the first acquisition window according to prefixed time interval reduces power consumption of terminal.Such as, when terminal be misused or contact by mistake light screen time, prior art opens fingerprint sensor and control fingerprint sensor to gather image all the time, if screen lighting time is when being 10 minutes, screen just can be closed after 10 min, fingerprint sensor needs the image always gathering 10 minutes in this course, and the embodiment of the present invention can carry out collection image by control first acquisition window, decreases the power consumption of terminal.
Collecting unit 13, for when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object.
In specific implementation, collecting unit 13 terminal, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object, in order to judge whether to carry out collection fingerprint according to the first image.
Collecting unit 13, also for judging whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
In specific implementation, collecting unit 13 judges whether the first image is effective fingerprint image, when the first image is effective fingerprint image, open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Second acquisition window comprises the acquisition window of the second quantity, or the second acquisition window is made up of the whole pixels in fingerprint sensor except the pixel that the first acquisition window comprises.When the first image is effective fingerprint image, need the image gathering collected correspondence, in order to the accuracy of gathered image, terminal starts the first acquisition window and the first acquisition window, at this moment, the first acquisition window is not gather according to prefixed time interval, but is in acquisition state all the time, generate the second image, in order to verify the second image.Be understandable that, when the first image is not effective fingerprint image, terminal does not start the second acquisition window, in optional scheme, the first acquisition window of fingerprint sensor can be closed, in order to reduce power consumption of terminal.
In a kind of feasible scheme, according to the first Computer image genration grey level histogram, and gray-scale value corresponding to the first image can be calculated according to grey level histogram; When the gray-scale value that the first image is corresponding is more than or equal to first threshold, then determine that the first image is effective fingerprint image.
In another kind of feasible scheme, when the first image is effective fingerprint image, by carrying out confession electric-opening second acquisition window to the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.
In embodiments of the present invention, by receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction, control the first acquisition window and carry out fingerprint collecting according to prefixed time interval, when the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object, judge whether the first image is effective fingerprint image, if, then open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Image is gathered according to prefixed time interval by the first acquisition window of fingerprint sensor, decrease fingerprint sensor in prior art and gather the electricity that image consumes all the time, and then improve the flying power of terminal, in addition, after determining that the first image is effective fingerprint image, terminal gathers fingerprint by the first acquisition window and the second acquisition window, this ensure that the accuracy gathering fingerprint.
Refer to Fig. 6, for embodiments providing the structural representation of another kind of terminal.As shown in Figure 6, the terminal 2 of the embodiment of the present invention can comprise: open unit 21, control module 22 and collecting unit 23.
Open unit 21, for receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction.
In specific implementation, open unit 21 and receive the instruction of fingerprint collecting and open the first acquisition window of fingerprint sensor according to instruction.In feasible scheme, open the instruction that unit 21 receives fingerprint collecting, and according to instruction by supplying electric-opening first acquisition window to the first acquisition window in fingerprint sensor.Wherein, fingerprint collecting instruction can be the fingerprint collecting instruction of fingerprint unlock screen, fingerprint logs in the fingerprint collecting instruction etc. that the fingerprint collecting instruction of software or fingerprint pay.Fingerprint sensor is the dedicated devices obtaining fingerprint image, and fingerprint sensor can be divided into optical fingerprint sensor, semicoductor capacitor sensor, semiconductor heat dependent sensor, semiconductor pressure sensor etc.The pixel for gathering fingerprint has been covered with in fingerprint sensor, first acquisition window comprises the acquisition window of the first quantity, wherein, acquisition window is made up of the pixel of predetermined number adjacent in fingerprint sensor, in first acquisition window, the position of each acquisition window does not limit in embodiments of the present invention, and such as, 8*8 pixel forms an acquisition window, select the acquisition window of 12 8*8 as the first acquisition window, these 12 acquisition windows are distributed in fingerprint sensor equably.When terminal receives the instruction of fingerprint collecting, open the first acquisition window of fingerprint sensor.
Control module 22, carries out fingerprint collecting for controlling the first acquisition window.
Concrete, control module 22 controls the first acquisition window and carries out fingerprint collecting, and the mode that can gather fingerprint like this by arranging the first acquisition window reduces power consumption of terminal.Such as, when terminal be misused or contact by mistake light screen time, prior art opens fingerprint sensor and control fingerprint sensor to gather image all the time, if screen lighting time is when being 10 minutes, screen just can be closed after 10 min, fingerprint sensor needs the image always gathering 10 minutes in this course, and the embodiment of the present invention can carry out collection image by control first acquisition window, decreases the power consumption of terminal.
Collecting unit 23, for when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object.
Concrete, collecting unit 23, when the collected object of contact fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by the first acquisition window to collected object, in order to judge whether to carry out collection fingerprint according to the first image.
Collecting unit 23, also for judging whether the first image is effective fingerprint image, if so, then opens the second acquisition window of fingerprint sensor, and carries out fingerprint collecting to generate the second image by the second acquisition window and the first acquisition window to collected object.
Concrete, collecting unit 23 judges whether the first image is effective fingerprint image, when the first image is effective fingerprint image, by carrying out confession electric-opening second acquisition window to the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Wherein, the second acquisition window comprises the acquisition window of the second quantity, or the second acquisition window is made up of the whole pixels in fingerprint sensor except the pixel that the first acquisition window comprises.When the first image is effective fingerprint image, need the image gathering collected correspondence, in order to the accuracy of gathered image, terminal starts the first acquisition window and the first acquisition window, generates the second image, in order to verify the second image.Be understandable that, when the first image is not effective fingerprint image, terminal does not start the second acquisition window, in optional scheme, the first acquisition window of fingerprint sensor can be closed, in order to reduce power consumption of terminal.
In feasible scheme, according to the first Computer image genration grey level histogram, and gray-scale value corresponding to the first image can be calculated according to grey level histogram; When the gray-scale value that the first image is corresponding is more than or equal to first threshold, then determine that the first image is effective fingerprint image.
In embodiments of the present invention, by receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to instruction, control the first acquisition window and carry out fingerprint collecting, when the collected object of contact fingerprint sensor being detected, by the first acquisition window, fingerprint collecting is carried out to generate the first image to collected object, judge whether the first image is effective fingerprint image, if, then open the second acquisition window of fingerprint sensor, and by the second acquisition window and the first acquisition window, fingerprint collecting is carried out to generate the second image to collected object.Image is gathered by the first acquisition window of fingerprint sensor, decrease fingerprint sensor in prior art and gather the electricity that image consumes all the time, and then improve the flying power of terminal, in addition, after determining that the first image is effective fingerprint image, terminal gathers fingerprint by the first acquisition window and the second acquisition window, this ensure that the accuracy gathering fingerprint.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a fingerprint collecting method, is characterized in that, comprising:
Receive the instruction of fingerprint collecting and open the first acquisition window of fingerprint sensor according to described instruction;
Control described first acquisition window and carry out fingerprint collecting according to prefixed time interval;
When the collected object contacting described fingerprint sensor being detected, by described first acquisition window, fingerprint collecting is carried out to generate the first image to described collected object;
Judge whether described first image is effective fingerprint image, if so, then opens the second acquisition window of described fingerprint sensor, and by described second acquisition window and described first acquisition window, fingerprint collecting is carried out to generate the second image to described collected object.
2. method according to claim 1, is characterized in that, described first acquisition window comprises the acquisition window of the first quantity, and wherein, described acquisition window is made up of the pixel of predetermined number adjacent in described fingerprint sensor; Described second acquisition window comprises the described acquisition window of the second quantity, or described second acquisition window is made up of the whole pixels in described fingerprint sensor except the pixel that described first acquisition window comprises.
3. method according to claim 1 and 2, is characterized in that, the instruction of described reception fingerprint collecting the step of opening the first acquisition window of fingerprint sensor according to described instruction specifically comprise:
Receive the instruction of fingerprint collecting, and according to described instruction by supplying the first acquisition window described in electric-opening to the first acquisition window in fingerprint sensor.
4. method according to claim 1 and 2, is characterized in that, describedly judges that whether described first image is that the step of effective fingerprint image specifically comprises:
Calculate the gray-scale value that described first image is corresponding;
When the gray-scale value that described first image is corresponding is more than or equal to first threshold, then determine that described first image is effective fingerprint image.
5. method according to claim 4, is characterized in that, the step of the gray-scale value that described first image of described calculating is corresponding specifically comprises:
According to described first Computer image genration grey level histogram, and calculate gray-scale value corresponding to described first image according to described grey level histogram.
6. method according to claim 1 and 2, it is characterized in that, second acquisition window of the described fingerprint sensor of described unlatching, and by described second acquisition window and described first acquisition window, fingerprint collecting is carried out to described collected object and specifically comprise with the step generating the second image:
By carrying out the second acquisition window described in confession electric-opening to the second acquisition window of described fingerprint sensor, and by described second acquisition window and described first acquisition window, fingerprint collecting is carried out to generate the second image to described collected object.
7. a fingerprint collecting method, is characterized in that, comprising:
Receive the instruction of fingerprint collecting and open the first acquisition window of fingerprint sensor according to described instruction;
Control described first acquisition window and carry out fingerprint collecting;
When the collected object contacting described fingerprint sensor being detected, by described first acquisition window, fingerprint collecting is carried out to generate the first image to described collected object;
Judge whether described first image is effective fingerprint image, if so, then opens the second acquisition window of described fingerprint sensor, and by described second acquisition window and described first acquisition window, fingerprint collecting is carried out to generate the second image to described collected object.
8. method according to claim 7, is characterized in that, described first acquisition window comprises the acquisition window of the first quantity, and wherein, described acquisition window is made up of the pixel of predetermined number adjacent in described fingerprint sensor; Described second acquisition window comprises the described acquisition window of the second quantity, or described second acquisition window is made up of the whole pixels in described fingerprint sensor except the pixel that described first acquisition window comprises.
9. a terminal, is characterized in that, comprising:
Open unit, for receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to described instruction;
Control module, carries out fingerprint collecting for controlling described first acquisition window according to prefixed time interval;
Collecting unit, for when the collected object contacting described fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by described first acquisition window to described collected object;
Described collecting unit, also for judging whether described first image is effective fingerprint image, if so, then open the second acquisition window of described fingerprint sensor, and by described second acquisition window and described first acquisition window, fingerprint collecting is carried out to generate the second image to described collected object.
10. a terminal, is characterized in that, comprising:
Open unit, for receiving the instruction of fingerprint collecting and opening the first acquisition window of fingerprint sensor according to described instruction;
Control module, carries out fingerprint collecting for controlling described first acquisition window;
Collecting unit, for when the collected object contacting described fingerprint sensor being detected, carries out fingerprint collecting to generate the first image by described first acquisition window to described collected object;
Described collecting unit, also for judging whether described first image is effective fingerprint image, if so, then open the second acquisition window of described fingerprint sensor, and by described second acquisition window and described first acquisition window, fingerprint collecting is carried out to generate the second image to described collected object.
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