CN106127018B - Mobile terminal unlocking method and system based on touch screen line drawing - Google Patents

Mobile terminal unlocking method and system based on touch screen line drawing Download PDF

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Publication number
CN106127018B
CN106127018B CN201610467696.8A CN201610467696A CN106127018B CN 106127018 B CN106127018 B CN 106127018B CN 201610467696 A CN201610467696 A CN 201610467696A CN 106127018 B CN106127018 B CN 106127018B
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track
unlocking
point
coordinates
setting
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CN106127018A (en
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杨维琴
俞斌
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Tcl Mobile Communication Technology Ningbo Co Ltd
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Tcl Mobile Communication Technology Ningbo Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31User authentication
    • G06F21/36User authentication by graphic or iconic representation

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Abstract

The invention discloses a method and a system for unlocking a mobile terminal based on a touch screen line drawing, wherein the method comprises the following steps: step A, presetting a first track for successful unlocking, wherein the first track comprises coordinates of each point on the track; b, when the unlocking interface is unlocked, acquiring coordinates of each point of a second track operated by the user on the unlocking interface; and C, judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, controlling the unlocking to be successful, otherwise, prompting the unlocking failure. The invention can realize that a user only needs to draw one track when unlocking, the track only needs to contain the form of the preset track which can be successfully unlocked, and the track does not need to be completely the same as the preset track which can be successfully unlocked in position, so that no prompt is needed under an unlocking interface, the safety is improved, the operation is simple, and convenience is greatly provided for the user.

Description

Mobile terminal unlocking method and system based on touch screen line drawing
Technical Field
The invention relates to the field of mobile terminals, in particular to a mobile terminal unlocking method and system based on touch screen line drawing.
Background
Currently, many unlocking methods based on a touch screen exist, for example, a track is preset by sliding unlocking according to a preset track, when the screen is locked, the unlocking is successful only when the drawn track is the same as the preset track, and otherwise, the unlocking is failed. In this scheme, the set track must be the same as the preset track, which includes the same starting point, the same end point, and the same all points in the track, and in the prior art, only displaying the track on the screen is currently implemented, and the track is unlocked by drawing the track according to the display content, so that the track drawn by the user can be as same as the preset track as possible.
That is, in the prior art, only some indicative patterns can be displayed on the screen, so that the user can draw a track according to the patterns, which not only affects the appearance, but also loses the safety.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a system for unlocking a mobile terminal based on a touch screen line, aiming at the above defects in the prior art. The unlocking method can be realized by drawing any line on the touch screen, is simple to operate and provides convenience for users.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a mobile terminal unlocking method based on touch screen line drawing comprises the following steps:
step A, presetting a first track for successful unlocking, wherein the first track comprises coordinates of each point on the track;
b, when the unlocking interface is unlocked, acquiring coordinates of each point of a second track operated by the user on the unlocking interface;
and C, judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, controlling the unlocking to be successful, otherwise, prompting the unlocking failure.
The mobile terminal unlocking method based on the touch screen line drawing includes the following specific steps:
step A11, presetting a first track for successful unlocking;
step A12, the first track includes coordinates of each point on the track, and each point of the first track is set as P [1], P [2], … … and P [ N ].
The mobile terminal unlocking method based on the touch screen line drawing includes the following specific steps:
b11, when unlocking the unlocking interface, acquiring the coordinates of each point of the second track operated by the user on the unlocking interface,
b12, and setting the points of the second track as Q1, Q2, … … and Q M.
The mobile terminal unlocking method based on the touch screen line drawing, wherein the step C further comprises the following steps: judging whether the following requirements are met, if so, successfully unlocking:
judging if | xP 1-xQ 1 | is less than xAvg + TH, | yP 1-yQ 1 | is less than yAvg + TH,
judging if | xP 2-xQ 2 | is less than xAvg + TH, | yP 2-yQ 2 | is less than yAvg + TH,
……
judging if | xP [ N ] -xQ [ N ] | is less than xAvg + TH, | yP [ N ] -yQ [ N ] | is less than yAvg + TH,
wherein, | | represents absolute value, xZ represents the abscissa of the Z point, yZ represents the ordinate of the Z point, xP [1] represents the abscissa of the P [1] point, yP [1] represents the ordinate of the P [1] point;
wherein xAvg = (| xP [1] -xQ [1] | + | xP [2] -xQ [2] | + … … + | xP [ N ] -xQ [ N ] |)/N;
yAvg=(|yP[1]-yQ[1]|+|yP[2]-yQ[2]|+……+|yP[N]-yQ[N]|)/N;
where TH is the value of the allowed redundancy.
The mobile terminal unlocking method based on the touch screen line drawing includes the following specific steps:
a21, providing a setting menu for setting an unlocking track;
a22, opening a setting interface through the setting menu, wherein the setting receiving user draws a first track with a designated shape on the touch screen and stores the coordinates of each point on the first track, and each point on the first track is P [1], P [2], … … and P [ N ].
The mobile terminal unlocking method based on the touch screen line drawing includes the following specific steps:
b21, when unlocking the unlocking interface, acquiring a second track with a specified shape drawn by the user in the operation of the unlocking interface,
b22, detecting the touch of the user on the touch screen, acquiring the coordinates of all touch points in the period from the time when the user touches the touch screen to the time when the user releases the touch screen, and recording the coordinates of each point as Q [1], Q [2], … … and Q [ M ] according to the touch time sequence.
A mobile terminal unlocking system based on touch screen line drawing comprises:
the track setting module is used for presetting a first track for successful unlocking, and the first track comprises coordinates of each point on the track;
the track acquisition module is used for acquiring the coordinates of each point of a second track operated by a user on the unlocking interface when the unlocking interface is unlocked;
and the judging module is used for judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, controlling the unlocking to be successful, and otherwise, prompting the unlocking failure.
Mobile terminal unblock system based on touch-sensitive screen setting-out, wherein, the orbit sets up the module and includes:
the device comprises a presetting unit, a control unit and a control unit, wherein the presetting unit is used for presetting a first track for successful unlocking;
a first track setting unit, for setting the coordinates of each point on the first track, and setting each point of the first track as P1, P2, … …, P N;
the trajectory acquisition module includes:
a first acquisition unit for acquiring coordinates of each point of a second trajectory operated by a user on the unlocking interface when the unlocking interface is unlocked,
and a second locus setting unit for setting respective points of the second locus as Q [1], Q [2], … …, Q [ M ].
The mobile terminal unlocking system based on the touch screen drawing line is characterized in that,
the judging module comprises:
the judging unit is used for judging whether the following are met, and if the following are met, the unlocking is successful:
judging if | xP 1-xQ 1 | is less than xAvg + TH, | yP 1-yQ 1 | is less than yAvg + TH,
judging if | xP 2-xQ 2 | is less than xAvg + TH, | yP 2-yQ 2 | is less than yAvg + TH,
……
judging if | xP [ N ] -xQ [ N ] | is less than xAvg + TH, | yP [ N ] -yQ [ N ] | is less than yAvg + TH,
wherein, | | represents absolute value, xZ represents the abscissa of the Z point, yZ represents the ordinate of the Z point, xP [1] represents the abscissa of the P [1] point, yP [1] represents the ordinate of the P [1] point;
wherein xAvg = (| xP [1] -xQ [1] | + | xP [2] -xQ [2] | + … … + | xP [ N ] -xQ [ N ] |)/N;
yAvg=(|yP[1]-yQ[1]|+|yP[2]-yQ[2]|+……+|yP[N]-yQ[N]|)/N;
where TH is the value of the allowed redundancy.
Mobile terminal unblock system based on touch-sensitive screen setting-out, wherein, the orbit sets up the module and still includes:
the menu setting unit is used for providing a setting menu for setting an unlocking track;
and the menu acquisition and storage unit is used for opening a setting interface through the setting menu, the setting receiving user draws a first track with a specified shape on the touch screen, and stores the coordinates of each point on the first track, and each point on the first track is represented by P [1], P [2], … … and P [ N ]:
the trajectory acquisition module further includes:
a second acquisition unit, configured to acquire a second track with a specified shape drawn by a user operating on the unlock interface when the unlock interface is unlocked,
and the detection unit is used for detecting that the user touches the touch screen, acquiring the coordinates of all touch points in the period from the time when the user touches the touch screen to the time when the user releases the touch screen, and recording the coordinates of all the points as Q [1], Q [2], … … and Q [ M ] according to the touch time sequence.
The invention provides a method and a system for unlocking a mobile terminal based on a touch screen drawing line, wherein the method comprises the steps of presetting a first track for successful unlocking, wherein the first track comprises coordinates of each point on the track, and each point of the first track is set as P1, P2, … … and P N; when the interface is unlocked, the coordinates of each point on a second track of the user are obtained, and each point of the second track is set as Q1, Q2, … … and Q M; judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, unlocking successfully, otherwise, unlocking fails; therefore, the user only needs to draw one track when unlocking, the track only needs to comprise the form of the preset track capable of being successfully unlocked, the position of the track is not required to be identical to the preset track capable of being successfully unlocked, the prompt is not required under the unlocking interface, the safety is improved, the operation is simple, and the convenience is greatly provided for the user.
Drawings
Fig. 1 is a flowchart of a mobile terminal unlocking method based on a touch screen line drawing according to a preferred embodiment of the present invention.
Fig. 2 shows several examples of successful unlocking and unsuccessful unlocking of the preferred embodiment of the unlocking method for the mobile terminal based on the line drawn on the touch screen.
Fig. 3 is a functional schematic block diagram of a preferred embodiment of the mobile terminal unlocking system based on touch screen drawing lines.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for unlocking a mobile terminal based on a touch screen line drawing according to a preferred embodiment of the present invention. As shown in fig. 1, an unlocking method for a mobile terminal based on a touch screen drawing line provided by an embodiment of the present invention includes:
step S100, a first track for successful unlocking is preset, and the first track comprises coordinates of each point on the track.
In the embodiment of the invention, a first track for successful unlocking is required to be preset; the first track includes the coordinates of each point on the track, and each point of the first track is P1, P2, … …, P N.
In the implementation, for example, a setting menu for setting the unlocking track is provided; and opening a setting interface through the setting menu, wherein the setting receiving user draws a first track (for example, a specified S-shaped) with a specified shape on the touch screen, and stores the coordinates of each point on the first track, wherein each point on the first track is P [1], P [2], … … and P [ N ].
And step S200, acquiring coordinates of each point of a second track operated by the user on the unlocking interface when the unlocking interface is unlocked.
In the embodiment of the invention, when the unlocking interface is unlocked, the coordinates of each point of a second track operated by a user on the unlocking interface are obtained, and each point of the second track is set to be Q [1], Q [2], … … and Q [ M ].
For example, when the unlocking interface is unlocked, a second track (for example, a designated S-shaped) with a designated shape drawn by the user in the operation of the unlocking interface is acquired, the touch of the user on the touch screen is detected, the coordinates of all touch points in the period from the time when the user touches the touch screen to the time when the user releases the touch screen are acquired, and the coordinates of all the touch points are recorded as Q [1], Q [2], … … and Q [ M ] according to the time sequence of touch.
And step S300, judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same, if so, controlling the unlocking to be successful, otherwise, prompting the unlocking failure.
Namely, in the embodiment of the invention, whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not is judged, if yes, the unlocking is successful, and if not, the unlocking is failed; specifically, whether the following is satisfied is judged, and if the following is satisfied, the unlocking is successful.
Specifically, whether the following are met is judged, and if the following are met, the unlocking is successful:
judging if | xP 1-xQ 1 | is less than xAvg + TH, | yP 1-yQ 1 | is less than yAvg + TH,
judging if | xP 2-xQ 2 | is less than xAvg + TH, | yP 2-yQ 2 | is less than yAvg + TH,
……
judging if | xP [ N ] -xQ [ N ] | is less than xAvg + TH, | yP [ N ] -yQ [ N ] | is less than yAvg + TH,
wherein, | | represents taking absolute value, such as | xP [1] -xQ [1] | represents taking absolute value of xP [1] -xQ [1 ]; where xZ represents the abscissa of the Z point, yZ represents the ordinate of the Z point, e.g., xP [1] represents the abscissa of the P [1] point, and yP [1] represents the ordinate of the P [1] point.
Wherein xAvg = (| xP [1] -xQ [1] | + | xP [2] -xQ [2] | + … … + | xP [ N ] -xQ [ N ] |)/N;
yAvg=(|yP[1]-yQ[1]|+|yP[2]-yQ[2]|+……+|yP[N]-yQ[N]I)/N, wherein xAvg is the average difference of X, yAvg is the average difference of Y, and TH is the allowable redundancyThe value of degree, e.g. TH, being+0.01。
Referring to fig. 2, fig. 2 shows several examples of successful unlocking and unsuccessful unlocking using the method of the present invention, in fig. 2, a track 3-1 is a first track, a track 3-2 is a first track, and the first track translates to the lower right to make the same form as the first track, so that the unlocking can be successful, and a user at the track 3-3 draws a track with the same form as the first track and then draws some tracks to release the touch screen, so that the unlocking can be successful.
In other words, in the embodiment of the invention, as long as the second track operated by the user on the unlocking interface has the track with the same form as the first track used for successful unlocking during unlocking, successful unlocking can be realized, and great convenience is provided for the user.
The embodiment of the invention provides a mobile terminal unlocking method based on touch screen line drawing, which comprises the steps of presetting a first track for successful unlocking, wherein the first track comprises coordinates of all points on the track, and the points of the first track are P1, P2, … … and P N; when the interface is unlocked, the coordinates of each point on a second track of the user are obtained, and each point of the second track is set as Q1, Q2, … … and Q M; judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, unlocking successfully, otherwise, unlocking fails; therefore, the user only needs to draw a track when unlocking, the track only needs to comprise the form of the preset track which can be successfully unlocked, and the track does not need to be identical to the preset track which can be successfully unlocked in position, so that the prompt is not needed under an unlocking interface, the safety is improved, and convenience is provided for the user.
Based on the above method embodiment, the present invention further provides a mobile terminal unlocking system based on touch screen line drawing, as shown in fig. 3, the system includes:
a track setting module 210, configured to preset a first track for successful unlocking, where the first track includes coordinates of each point on the track; as described above.
The track obtaining module 220 is configured to obtain coordinates of each point of a second track operated by the user on the unlocking interface when the unlocking interface is unlocked; as described above.
The judging module 230 is configured to judge whether the difference values of the coordinates of the points corresponding to the first trajectory and the second trajectory are the same, if yes, control the unlocking to be successful, and otherwise prompt the unlocking to be failed; as described above.
Mobile terminal unblock system based on touch-sensitive screen setting-out, wherein, the orbit sets up the module and includes:
the device comprises a presetting unit, a control unit and a control unit, wherein the presetting unit is used for presetting a first track for successful unlocking; as described above.
A first track setting unit, for setting the coordinates of each point on the first track, and setting each point of the first track as P1, P2, … …, P N; as described above.
The trajectory acquisition module includes:
the first acquisition unit is used for acquiring the coordinates of each point of a second track operated by a user on the unlocking interface when the unlocking interface is unlocked; as described above.
A second locus setting unit for setting each point of the second locus as Q1, Q2, … …, QM; as described above.
The mobile terminal unlocking system based on the touch screen drawing line is characterized in that,
the judging module comprises:
the judging unit is used for judging whether the following are met, and if the following are met, the unlocking is successful:
judging if | xP 1-xQ 1 | is less than xAvg + TH, | yP 1-yQ 1 | is less than yAvg + TH,
judging if | xP 2-xQ 2 | is less than xAvg + TH, | yP 2-yQ 2 | is less than yAvg + TH,
……
judging if | xP [ N ] -xQ [ N ] | is less than xAvg + TH, | yP [ N ] -yQ [ N ] | is less than yAvg + TH,
wherein, | | represents absolute value, xZ represents the abscissa of the Z point, yZ represents the ordinate of the Z point, xP [1] represents the abscissa of the P [1] point, yP [1] represents the ordinate of the P [1] point;
wherein xAvg = (| xP [1] -xQ [1] | + | xP [2] -xQ [2] | + … … + | xP [ N ] -xQ [ N ] |)/N;
yAvg=(|yP[1]-yQ[1]|+|yP[2]-yQ[2]|+……+|yP[N]-yQ[N]|)/N;
wherein TH is a value of allowed redundancy; as described above.
Mobile terminal unblock system based on touch-sensitive screen setting-out, wherein, the orbit sets up the module and still includes:
the menu setting unit is used for providing a setting menu for setting an unlocking track; as described above.
A menu obtaining and storing unit, which is used for opening a setting interface through the setting menu, wherein the setting receiving user draws a first track with a specified shape on the touch screen, and stores the coordinates of each point on the first track, and each point on the first track uses P1, P2, … … and P N; as described above.
The trajectory acquisition module further includes:
the second acquisition unit is used for acquiring a second track with a specified shape, which is drawn by the user in the operation of the unlocking interface when the unlocking interface is unlocked; as described above.
The detection unit is used for detecting that a user touches the touch screen, acquiring coordinates of all touch points in the period from the time when the user touches the touch screen to the time when the user releases the touch screen, and recording the coordinates of all the points as Q [1], Q [2], … … and Q [ M ] according to the touch time sequence; as described above.
In summary, according to the method and the system for unlocking the mobile terminal based on the line drawing of the touch screen, provided by the invention, a first track for successful unlocking is preset, the first track comprises coordinates of each point on the track, and each point of the first track is set as P1, P2, … … and P N; when the interface is unlocked, the coordinates of each point on a second track of the user are obtained, and each point of the second track is set as Q1, Q2, … … and Q M; judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, unlocking successfully, otherwise, unlocking fails; therefore, the user only needs to draw one track when unlocking, the track only needs to comprise the form of the preset track capable of being successfully unlocked, the position of the track is not required to be identical to the preset track capable of being successfully unlocked, the prompt is not required under the unlocking interface, the safety is improved, the operation is simple, and the convenience is greatly provided for the user.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (5)

1. A mobile terminal unlocking method based on touch screen line drawing is characterized by comprising the following steps:
step A, presetting a first track for successful unlocking, wherein the first track comprises coordinates of each point on the track;
b, when the unlocking interface is unlocked, acquiring coordinates of each point of a second track operated by the user on the unlocking interface;
step C, judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, controlling the unlocking to be successful, otherwise, prompting the unlocking to be failed;
the step A specifically comprises the following steps:
a21, providing a setting menu for setting an unlocking track;
a22, opening a setting interface through the setting menu, wherein the setting receiving user draws a first track with a designated shape on the touch screen and stores the coordinates of each point on the first track, and each point on the first track is P [1], P [2], … … and P [ N ]; wherein the first track is S-shaped;
the step B specifically comprises the following steps:
b21, when the unlocking interface is unlocked, acquiring a second track with a specified shape drawn by the user in the operation of the unlocking interface;
b22, detecting that the user touches the touch screen, acquiring the coordinates of all touch points in the period from the time when the user touches the touch screen to the time when the user releases the touch screen, and recording the coordinates of all the points as the coordinates of Q [1], Q [2], … … and Q [ M ] according to the touch time sequence;
the step C further comprises the following steps: judging whether the following requirements are met, if so, successfully unlocking:
judging whether | xP [1] -xQ [1] | is less than xAvg + TH, | yP [1] -yQ [1] | is less than yAvg + TH,
determining if | xP [2] -xQ [2] | is less than xAvg + TH, | yP [2] -yQ [2] | is less than yAvg + TH,
……
determining if | xP [ N ] -xQ [ N ] | is less than xAvg + TH, | yP [ N ] -yQ [ N ] | is less than yAvg + TH,
wherein, | | represents absolute value, xZ represents the abscissa of the Z point, yZ represents the ordinate of the Z point, xP [1] represents the abscissa of the P [1] point, yP [1] represents the ordinate of the P [1] point;
wherein xAvg [ | xP [1] -xQ [1] | + | xP [2] -xQ [2] | + … … + | xP [ N ] -xQ [ N ] |)/N;
yAvg=(|yP[1]-yQ[1]|+|yP[2]-yQ[2]|+……+|yP[N]-yQ[N]|)/N;
wherein TH is a value of allowed redundancy; wherein M ═ N.
2. The method for unlocking the mobile terminal based on the touch screen line drawing as claimed in claim 1, wherein the step A specifically comprises:
step A11, presetting a first track for successful unlocking;
step A12, the first track includes coordinates of each point on the track, and each point of the first track is set as P [1], P [2], … … and P [ N ].
3. The method for unlocking the mobile terminal based on the touch screen line drawing as claimed in claim 2, wherein the step B specifically comprises:
b11, when unlocking the unlocking interface, acquiring the coordinates of each point of the second track operated by the user on the unlocking interface,
b12, and setting the points of the second track as Q1, Q2, … … and Q M.
4. The utility model provides a mobile terminal unblock system based on touch-sensitive screen setting-out which characterized in that includes:
the track setting module is used for presetting a first track for successful unlocking, and the first track comprises coordinates of each point on the track;
the trajectory setting module includes:
the menu setting unit is used for providing a setting menu for setting an unlocking track;
a menu obtaining and storing unit, which is used for opening a setting interface through the setting menu, wherein the setting receiving user draws a first track with a specified shape on the touch screen, and stores the coordinates of each point on the first track, and each point on the first track uses P1, P2, … … and P N; wherein the first track is S-shaped;
the track acquisition module is used for acquiring the coordinates of each point of a second track operated by a user on the unlocking interface when the unlocking interface is unlocked;
the trajectory acquisition module includes:
a second acquisition unit, configured to acquire a second track with a specified shape drawn by a user operating on the unlock interface when the unlock interface is unlocked,
a detection unit for detecting the touch of the touch screen by the user, acquiring the coordinates of all touch points during the period from the touch of the touch screen by the user to the release of the touch screen by the user, and recording as Q1 and,
Coordinates of each point of Q2, … …, Q M;
the judging module is used for judging whether the difference values of the coordinates of the points corresponding to the first track and the second track are the same or not, if so, the unlocking is controlled to be successful, and otherwise, the unlocking failure is prompted;
the judging module comprises:
the judging unit is used for judging whether the following are met, and if the following are met, the unlocking is successful:
judging whether | xP [1] -xQ [1] | is less than xAvg + TH, | yP [1] -yQ [1] | is less than yAvg + TH,
determining if | xP [2] -xQ [2] | is less than xAvg + TH, | yP [2] -yQ [2] | is less than yAvg + TH,
……
determining if | xP [ N ] -xQ [ N ] | is less than xAvg + TH, | yP [ N ] -yQ [ N ] | is less than yAvg + TH,
wherein, | | represents absolute value, xZ represents the abscissa of the Z point, yZ represents the ordinate of the Z point, xP [1] represents the abscissa of the P [1] point, yP [1] represents the ordinate of the P [1] point;
wherein xAvg [ | xP [1] -xQ [1] | + | xP [2] -xQ [2] | + … … + | xP [ N ] -xQ [ N ] |)/N;
yAvg=(|yP[1]-yQ[1]|+|yP[2]-yQ[2]|+……+|yP[N]-yQ[N]|)/N;
wherein TH is a value of allowed redundancy; wherein M ═ N.
5. The touch screen line drawing based mobile terminal unlocking system according to claim 4, wherein the track setting module further comprises:
the device comprises a presetting unit, a control unit and a control unit, wherein the presetting unit is used for presetting a first track for successful unlocking;
a first track setting unit, for setting the coordinates of each point on the first track, and setting each point of the first track as P1, P2, … …, P N;
the trajectory acquisition module includes:
a first acquisition unit for acquiring coordinates of each point of a second trajectory operated by a user on the unlocking interface when the unlocking interface is unlocked,
and a second locus setting unit for setting respective points of the second locus as Q [1], Q [2], … …, Q [ M ].
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