CN105138881A - Screen lock method and device - Google Patents

Abstract

The embodiment of the present invention discloses a screen lock method and device. The method comprises: when the screen of the mobile terminal is in an unlocked state, collecting iris information according to a preset collection cycle as target iris information; identifying whether the target iris information matches the pre-stored standard iris information; and determining whether to lock the screen of the mobile terminal according to the identification result. The technical solution provided by the embodiment of the present invention optimizes the existing screen lock technology and improves the user's screen lock experience.

Description

Screen lock method and device

technical field

The embodiments of the present invention relate to the field of computer technology, and in particular to a method and device for locking a screen.

Background technique

As a very popular mobile terminal at present, smart phones have brought rapid changes to people's work, life and study. Users can use smart phones connected to the Internet to browse news, release information, download materials, watch videos, listen to music, etc.

At present, smart phones are usually provided with a lock screen function to protect user-related privacy, prevent misuse, and save power. On the one hand, the user can actively lock the screen of the mobile phone by pressing the screen lock button set on the mobile phone; on the other hand, the user can pre-set a lock screen waiting period. When there is any input, enter the lock screen state. After that, the user can still turn on the screen by pressing the lock screen button, and enter the main interface of the mobile phone after entering the password or performing other unlocking operations, thereby unlocking the screen lock.

However, the existing lock screen mechanism is rigid in operation and not flexible enough for users, and can no longer meet the growing individual needs of users for screen lock operations.

Contents of the invention

Embodiments of the present invention provide a method and device for locking a screen, so as to optimize an existing screen locking technology and improve a user's screen locking experience.

On the one hand, an embodiment of the present invention provides a method for locking the screen, the method comprising:

When the screen of the mobile terminal is in an unlocked state, collect iris information according to a preset collection cycle as target iris information;

identifying whether the target iris information matches the pre-stored standard iris information;

According to the recognition result, determine whether to lock the screen of the mobile terminal.

On the other hand, an embodiment of the present invention also provides a screen lock device, which includes:

A target iris collection unit, configured to collect iris information according to a preset collection cycle as target iris information when the screen of the mobile terminal is in an unlocked state;

An iris identification unit, configured to identify whether the target iris information collected by the target iris collection unit matches the pre-stored standard iris information;

The screen lock determining unit is configured to determine whether to lock the screen of the mobile terminal according to the recognition result obtained by the iris recognition unit.

The technical solution provided by the embodiments of the present invention can optimize the existing screen lock mechanism and provide a new method of locking the screen of the mobile terminal by using iris technology, which is simple and conforms to user habits.

Description of drawings

FIG. 1 is a schematic flowchart of a screen locking method provided in Embodiment 1 of the present invention;

FIG. 2 is a flow chart of a method for locking the screen provided by Embodiment 2 of the present invention;

FIG. 3 is a flow chart of a method for locking the screen provided by Embodiment 3 of the present invention;

FIG. 4 is a flow chart of a method for locking the screen provided in Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of a screen locking device provided in Embodiment 5 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe various operations (or steps) as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Embodiment one

FIG. 1 is a schematic flowchart of a method for locking a screen provided in Embodiment 1 of the present invention. The method can be executed by a screen lock device, which is realized by software and/or hardware and built into a mobile terminal (such as a smart phone, a tablet computer or a personal digital assistant).

Referring to FIG. 1 , the method for locking the screen provided in this embodiment specifically includes the following operations 110 - 130 .

Operation 110. When the screen of the mobile terminal is in an unlocked state, collect iris information according to a preset collection cycle as target iris information.

In this embodiment, iris information can be collected according to a preset collection period by using an iris scanner or a front camera installed on the mobile terminal. Exemplarily, the process of collecting iris information each time may include: collecting images; sequentially performing iris positioning, iris image normalization, iris image enhancement and other processing on the collected images to make it meet the requirements of iris feature extraction; The set algorithm extracts iris features from the enhanced iris image and encodes them as iris information collected this time.

Specifically, the iris positioning includes: determining the position of the inner circle, the outer circle and the quadratic curve in the collected image, and extracting the iris image in the collected image according to the position, wherein the inner circle is the boundary between the iris and the pupil, and the outer circle is the boundary between the iris and the pupil. The circle is the boundary between the iris and the sclera, and the quadratic curve is the boundary between the iris and the upper and lower eyelids. Iris image normalization, including: adjusting the iris image to a preset target size. The iris image enhancement includes: processing brightness, contrast and smoothness on the normalized iris image to improve the recognition rate of iris information in the iris image.

In this embodiment, the iris scanner can be called to complete the above-mentioned complete process of collecting iris information. The components used for image acquisition in the iris scanner should be set at a position on the mobile terminal that can capture human eyes well, and this position can be determined by developers through a large number of experiments. For example, when the mobile terminal is a smart phone, the part of the iris scanner that collects images may be located in the non-touch area on the left or right side of the front camera of the smart phone.

If the front camera is used to collect iris information, the only way to obtain the image collected by the front camera is to process the image to obtain the iris information after calling the front camera to collect the image.

The cycle of collecting iris information describes how often the iris information will be collected. Specifically, it may be determined according to the time spent by the iris scanner from capturing images to extracting iris information. The collection period should be greater than or equal to this duration.

Operation 120, identifying whether the target iris information matches the pre-stored standard iris information.

In this embodiment, the user of the mobile terminal needs to input standard iris information based on human-computer interaction in advance and store it, so that the matching operation of subsequent iris information can be realized. Before identifying whether the target iris information matches the pre-stored standard iris information, it also includes: receiving a trigger instruction for creating standard iris information, collecting and storing the standard iris information. Wherein, the trigger instruction may be an instruction generated by the user by triggering the standard iris information creation button in the iris lock screen function option in the system setting application after the mobile terminal is turned on. The standard iris information collection method may be the same as the above target iris information collection method. Standard iris information is collected by using an iris scanner or a front-facing camera installed on a mobile terminal.

After the target iris information is collected once, the similarity calculation between the target iris information collected this time and the standard iris information can be performed, and then according to the calculation result, it can be determined whether the two match. Exemplarily, a threshold value less than 1 can be preset, and if the similarity calculated this time is greater than the threshold value, it is identified that the target iris information collected this time matches the standard iris information, otherwise no match. Here, the threshold value is not set as 1. The reason is that during each iris information collection process, the mobile terminal user may move at any time, causing the position or angle of the eyes to change, resulting in various The iris images collected each time will also have differences in content and clarity, which ultimately makes the iris information collected each time not strictly consistent. If the threshold value is set to 1, the accuracy of matching recognition will be greatly reduced , resulting in the problem of low recognition rate.

Operation 130. Determine whether to lock the screen of the mobile terminal according to the identification result.

As a specific implementation of this embodiment, operation 130 specifically includes: detecting whether target iris information matching standard iris information is identified within the preset lock screen waiting period; determining whether to lock the mobile terminal according to the detection result; Screen. For example, if no target iris information matching the standard iris information is identified within 5 minutes, the screen of the mobile terminal is locked.

As another specific implementation of this embodiment, operation 130 specifically includes: when the collected target iris information does not match the standard iris information, record the matching failure; and determine whether to lock the screen of the mobile terminal according to the record result. For example, if the record result shows that the last 10 consecutive matches have failed, the screen of the mobile terminal is locked.

In the above two specific implementation modes, the user can automatically lock the screen of the mobile terminal without manually triggering the lock screen button, so as to save power and prevent misuse of the mobile terminal; and, compared with the existing timeout lock screen The mechanism also has great advantages. For example, in practical applications, the following situations often occur: the user is very interested in part of the content currently displayed on the mobile terminal, and the eyes stay on the current display page for a long time. During this period, users seldom touch the screen, so it is very easy to cause no input on the mobile terminal within the set time. If the timeout lock screen mechanism is adopted, the screen of the mobile terminal will be locked. Obviously, this will affect the user's reading experience. However, in this embodiment, the screen is locked only after the mobile terminal cannot find the target iris information matching the standard iris information for a long time or multiple times.

The technical solution provided in this embodiment can optimize the existing screen lock mechanism, and provide a new method of locking the screen of the mobile terminal by using iris technology, which is simple and conforms to user habits.

Embodiment two

FIG. 2 is a flow chart of a method for locking a screen provided by Embodiment 2 of the present invention. In this embodiment, on the basis of the first embodiment above, the operation of "determining whether to lock the screen of the mobile terminal according to the identification result" is optimized.

Referring to FIG. 2 , the method specifically includes the following operations 210 - 240 .

Operation 210. When the screen of the mobile terminal is in an unlocked state, collect iris information according to a preset collection cycle as target iris information.

Operation 220, identifying whether the target iris information matches the pre-stored standard iris information.

Operation 230, detecting whether target iris information matching standard iris information is recognized within a preset lock screen waiting period.

Wherein, the lock screen waiting period is longer than the acquisition period. Exemplarily, operation 230 may specifically include:

After each recognition result is obtained, if the recognition result is that the collected target iris information matches the standard iris information, the value of the pre-configured delay parameter is updated to the lock screen waiting period, otherwise the value of the delay parameter is reduced to the collection period ;

When the value of the delay parameter is less than or equal to zero, it is detected that no target iris information matching the standard iris information is identified within the preset lock screen waiting period.

Operation 240. Determine whether to lock the screen of the mobile terminal according to the detection result.

In this embodiment, if the detection result is that the target iris information matching the standard iris information is not recognized within the preset lock screen waiting period, then: the operation of locking the screen of the mobile terminal can be performed immediately; The lock screen prompts and collects iris information; if the iris information collected this time does not match the pre-stored standard iris information, the screen of the mobile terminal is locked.

Wherein, the pseudo-lock screen prompt may be an alarm clock prompt, a notepad prompt and other prompts except the lock screen prompt. Here, the pseudo lock screen prompt is used instead of the lock screen prompt, and its advantage is that it can confuse other people except mobile terminal users, so that these people will not think that the mobile terminal is going to carry out after seeing the pseudo lock screen prompt. Lock screen verification, so standard iris information will not be stolen by illegal means to try to prevent the screen of the mobile terminal from being locked through lock screen verification.

Preferably, when the pseudo lock screen prompt is started, the countdown is started. If the iris information matching the pre-stored standard iris information is collected within the time period after the countdown begins and before the countdown reaches zero, then the screen of the mobile terminal is locked; otherwise, the value of the above-mentioned delay parameter is also updated as Lock screen wait period.

Embodiment three

FIG. 3 is a flow chart of a method for locking a screen provided by Embodiment 3 of the present invention. In this embodiment, on the basis of the first and second embodiments above, the operation of collecting and storing standard iris information is added. Referring to FIG. 3 , the method specifically includes the following operations 310 - 350 .

Operation 310, receiving a first trigger instruction for creating standard iris information, collecting and storing the first standard iris information.

Operation 320: Receive a second trigger instruction for creating standard iris information, use the first standard iris information to perform authorization verification, and collect and store the second standard iris information after the verification is successful.

Operation 330. When the screen of the mobile terminal is in an unlocked state, collect iris information according to a preset collection cycle as target iris information.

Operation 340, identifying whether the target iris information matches the pre-stored standard iris information.

Operation 350. Determine whether to lock the screen of the mobile terminal according to the identification result.

The iris of the user's eye is as unique as the fingerprint of the finger. The information contained in each iris is different, and the possibility of iris tissue with the same shape is much lower than that of other tissues. The fibrous tissue of the iris is complex and rich in details, and its formation is related to the local physical and chemical conditions of the tissue during the embryogenesis stage, which has great randomness. Even using cloning technology, a certain iris cannot be copied. Identical twins have different iris texture information, and the iris textures of the left and right eyes of the same person will not agree with each other.

For this reason, a new lock screen mechanism can be provided through iris recognition technology to determine whether to perform a screen lock operation according to whether the target iris information collected in real time matches the pre-stored standard iris information. Preferably, when the mobile terminal is turned on for the first time, the user of the mobile terminal acts on the human-computer interaction interface to generate the first trigger instruction for creating standard iris information. After receiving the instruction, the mobile terminal performs iris information collection and storage operations. This initial iris information can only be input once, and cannot be changed after input. The iris information is the mobile terminal user's own iris information, which is called the first standard iris information.

Considering that mobile terminal users often allow some relatives, friends and other people to use their mobile terminals, in this case, if the target iris information collected later matches the iris information of these people, it should not be executed For the lock operation of the mobile terminal screen. Therefore, in this embodiment, the first standard iris information can also be used for authorization verification, and after the verification is successful, the iris information of these people can be collected and stored as the second standard iris information. The specific authorization verification process may include: popping up the authorization verification interface to prompt the user to enter the iris for authorization verification, and calling the iris scanner or front camera set on the mobile terminal to collect iris information; If the iris information of the user matches the first standard information, the authorization verification is successful.

In this embodiment, the collected pieces of standard iris information can be stored in a pre-created array or linked list according to a set sequence. Exemplarily, after each collection of the target iris information, according to the set sequence, the target iris information is sequentially matched with the stored pieces of standard iris information, and if any one of the matching results is a successful match, then determine The standard iris information that matches the target iris information is identified, and no subsequent matching operation with other standard iris information is performed. Compared with the scheme of traversing all the standard iris information one by one and matching the target iris information, the above example does not perform subsequent matching work after a certain matching is successful, which can save system resources and speed up the matching speed. If each matching result is a matching failure, it indicates that the standard iris information matching the target iris information has not been recognized.

Embodiment four

FIG. 4 is a flow chart of a method for locking a screen provided in Embodiment 4 of the present invention. This embodiment provides a preferred embodiment on the basis of all the above embodiments. Referring to FIG. 4 , the method specifically includes the following operations 400 - 490 .

Operation 400. A first trigger instruction for creating standard iris information is received, and the first standard iris information is collected and stored.

Operation 410: Receive a second trigger instruction for creating standard iris information, use the first standard iris information to perform authorization verification, and collect and store the second standard iris information after the verification is successful.

Operation 420. When the screen of the mobile terminal is in an unlocked state, collect iris information according to a preset collection cycle as target iris information.

Operation 430, identifying whether the target iris information matches the pre-stored standard iris information. If yes, perform operation 440 , otherwise perform operation 450 .

Operation 440, update the value of the pre-configured delay parameter as the lock screen waiting period. Return to operation 420 to continue execution.

Operation 450. Decrease the value of the pre-configured delay parameter by the acquisition period. Execute operation 460 .

Operation 460, determine whether the value of the delay parameter is less than or equal to zero. If yes, perform operation 470, otherwise return to operation 420 to continue.

In operation 470, it is detected that the target iris information matching the standard iris information is not recognized within the preset lock screen waiting period. Execute operation 480 .

Operation 480, perform a pseudo lock screen prompt, and collect iris information. Execute operation 490 .

Operation 490, if the iris information collected this time does not match the pre-stored standard iris information, lock the screen of the mobile terminal.

Preferably, if the iris information collected by performing operation 480 matches the pre-stored standard iris information, then return to operation 440 to continue execution.

In this embodiment, the iris recognition technology can be used to lock the screen of the mobile terminal. The mobile terminal can detect whether there is iris information of the mobile terminal user around. If it does not exist, it is judged that the mobile terminal user is not around the mobile phone, and the mobile terminal screen is locked or pretended to be turned off in time. At this time, even if there are other non-mobile terminal users. The screen can also be locked when the terminal is operated, which can effectively protect the privacy of the mobile terminal user in a timely manner. In addition, when the mobile terminal user does not enter and needs to lock the screen, only the iris input is needed to realize the delayed lock screen.

Embodiment five

FIG. 5 is a schematic structural diagram of a screen locking device provided in Embodiment 5 of the present invention. The device is provided in a mobile terminal. Referring to Figure 5, the specific structure of the lock screen device is as follows:

The target iris collection unit 510 is configured to collect iris information according to a preset collection cycle as the target iris information when the screen of the mobile terminal is in an unlocked state;

An iris identification unit 520, configured to identify whether the target iris information collected by the target iris collection unit 510 matches the pre-stored standard iris information;

The screen lock determination unit 530 is configured to determine whether to lock the screen of the mobile terminal according to the recognition result obtained by the iris recognition unit 520 .

Exemplarily, the screen lock determining unit 530 includes:

The detection subunit 5301 is used to detect whether the iris recognition unit 520 has identified target iris information matching the standard iris information within a preset lock screen waiting period, wherein the lock screen waiting period is longer than the collection period;

The determination subunit 5302 is configured to determine whether to lock the screen of the mobile terminal according to the detection result obtained by the detection subunit 5301.

Exemplarily, the determining subunit 5302 is specifically configured to:

If the detection result obtained by the detection subunit 5301 is that no target iris information matching the standard iris information is identified within the preset lock screen waiting period, perform a pseudo lock screen prompt and collect iris information;

If the iris information collected this time does not match the pre-stored standard iris information, the screen of the mobile terminal is locked.

Exemplarily, the detection subunit 5301 is specifically used for:

After each recognition result is obtained, if the recognition result is that the collected target iris information matches the standard iris information, the value of the pre-configured delay parameter is updated to the lock screen waiting period, otherwise the delay parameter The value of reduces the collection period;

When the value of the delay parameter is less than or equal to zero, it is detected that no target iris information matching the standard iris information is identified within the preset lock screen waiting period.

On the basis of the above technical solution, the lock screen device provided by this embodiment also includes a standard iris collection unit 500, which is used to identify whether the target iris information collected by the target iris collection unit 510 in the iris recognition unit 520 is consistent with the previous Before matching the stored standard iris information:

receiving a first trigger instruction for creating standard iris information, collecting and storing the first standard iris information;

After receiving a second trigger instruction for creating standard iris information, the first standard iris information is used to perform authorization verification, and after the verification is successful, the second standard iris information is collected and stored.

On the basis of the above technical solution, the target iris collection unit 510 is specifically used for:

When the screen of the mobile terminal is in an unlocked state, an iris scanner or a front-facing camera installed on the mobile terminal is used to collect iris information according to a preset collection cycle as target iris information.

The above-mentioned product can execute the method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (12)

1. a screen locking method, is applied to mobile terminal, it is characterized in that, comprising:

When the screen of described mobile terminal is in unlocked state, gather iris information, as target iris information according to the collection period preset;

Identify whether described target iris information matches with the standard iris information prestored;

According to described recognition result, determine whether the screen locking described mobile terminal.

2. method according to claim 1, is characterized in that, according to described recognition result, determines whether the screen locking described mobile terminal, comprising:

Detect and whether recognize the target iris information matched with described standard iris information in the screen locking latent period preset, wherein said screen locking latent period is greater than described collection period;

According to testing result, determine whether the screen locking described mobile terminal.

3. method according to claim 2, is characterized in that, according to testing result, determines whether the screen locking described mobile terminal, comprising:

If testing result is the unidentified target iris information to matching with described standard iris information in the screen locking latent period preset, then carries out pseudo-screen locking prompting, and gather iris information;

If this iris information collected does not match with the standard iris information prestored, then lock the screen of described mobile terminal.

4. method according to claim 2, is characterized in that, detects and whether recognize the target iris information matched with described standard iris information in the screen locking latent period preset, comprising:

After often obtaining a recognition result, if this recognition result be gather target iris information and described standard iris information match, then the value of pre-configured delay parameter is updated to described screen locking latent period, otherwise the value of described delay parameter is reduced described collection period;

When the value of described delay parameter is less than or equal to zero, detect in the screen locking latent period preset, the unidentified target iris information to matching with described standard iris information.

5. the method according to any one of claim 1-4, is characterized in that, before whether the described target iris information of identification matches with the standard iris information prestored, also comprises:

Receive the first triggering command of establishment standard iris information, gather and store the first standard iris information;

Receive the second triggering command of establishment standard iris information, utilize described first standard iris information to carry out authority checking, and after being proved to be successful, gathering and store the second standard iris information.

6. the method according to any one of claim 1-4, is characterized in that, gathers iris information, comprising according to the collection period preset:

Utilize the iris scan device or front-facing camera that arrange on the mobile terminal, gather iris information according to the collection period preset.

7. a screen locking device, is arranged in mobile terminal, it is characterized in that, comprising:

Target iris capturing unit, for when the screen of described mobile terminal is in unlocked state, gathers iris information, as target iris information according to the collection period preset;

Iris recognition unit, for identifying whether the target iris information that described target iris capturing unit collects matches with the standard iris information prestored;

Screen locking determining unit, for the recognition result obtained according to described iris recognition unit, determines whether the screen locking described mobile terminal.

8. device according to claim 7, is characterized in that, described screen locking determining unit comprises:

Detection sub-unit, whether recognize for detecting iris recognition unit 520 in the screen locking latent period preset the target iris information matched with described standard iris information, wherein said screen locking latent period is greater than described collection period;

Determine subelement, for the testing result obtained according to described detection sub-unit, determine whether the screen locking described mobile terminal.

9. device according to claim 8, is characterized in that, describedly determines subelement, specifically for:

If the testing result that described detection sub-unit obtains is the unidentified target iris information to matching with described standard iris information in the screen locking latent period preset, then carries out pseudo-screen locking prompting, and gather iris information;

If this iris information collected does not match with the standard iris information prestored, then lock the screen of described mobile terminal.

10. device according to claim 8, is characterized in that, described detection sub-unit, specifically for:

After often obtaining a recognition result, if this recognition result be gather target iris information and described standard iris information match, then the value of pre-configured delay parameter is updated to described screen locking latent period, otherwise the value of described delay parameter is reduced described collection period;

When the value of described delay parameter is less than or equal to zero, detect in the screen locking latent period preset, the unidentified target iris information to matching with described standard iris information.

11. devices according to any one of claim 7-10, it is characterized in that, also comprise standard iris capturing unit, before whether matching with the standard iris information prestored for the target iris information that collects at target iris capturing unit described in the identification of described iris recognition unit:

Receive the first triggering command of establishment standard iris information, gather and store the first standard iris information;

Receive the second triggering command of establishment standard iris information, utilize described first standard iris information to carry out authority checking, and after being proved to be successful, gathering and store the second standard iris information.

12. devices according to any one of claim 7-10, is characterized in that, described target iris capturing unit, specifically for:

When the screen of described mobile terminal is in unlocked state, utilizes the iris scan device or front-facing camera that arrange on the mobile terminal, gather iris information, as target iris information according to the collection period preset.