TWI682328B - Fingerprint unlocking method, system and an electronic device - Google Patents

Abstract

A fingerprint unlocking method, device, system and an electronic device. The fingerprint unlocking method includes getting a touch command base on a user operating. Reporting an interrupt and triggering an awake LCD command. Picking a fingerprint correspond to the user operating. Sending a window drawing command and comparing whether the fingerprint match to a default fingerprint. If the answer is match, light up a backlight after triggering a setting power mode and performing a unlock process. If the answer is not match, Sending a sleep LCD command so that the backlight of the LCD is in a dark state. Therefore, after a finger is detected (when reporting the interrupt), it can trigger the awake LCD command. It is not necessary to initialize the LCD screen after confirming the fingerprint comparison result, which saves the time for fingerprint unlocking. It can drawing the window and comparing the fingerprints at the same time to save the unlocking time.

Description

Fingerprint unlocking method, system and electronic equipment

The present invention relates to the field of semiconductor technology, and more specifically, to a fingerprint unlocking method, device, system, and electronic equipment.

With the continuous development of science and technology, users have higher and higher requirements for security performance, and biometrics has developed rapidly due to the uniqueness of its biological characteristics. Among them, the fingerprint identification module (FPR) has become an indispensable part of smart electronic devices, and plays an important role in daily life, such as fingerprint unlocking and fingerprint payment.

The inventor found that the process of unlocking the bright screen in the current operating system of the smart terminal is shown in Figure 1. The fingerprint recognition module FPR recognizes the effective finger touch action, then reports the interruption, and then obtains the obtained fingerprint and fingerprint The templates are compared, and when the comparison is correct, the LCD screen is initialized. After the LCD screen is initialized successfully, draw the window, then set the power mode and perform the unlocking process, and finally light the backlight to achieve the effect of triggering the screen bright screen through fingerprint recognition.

However, the above-mentioned series of processes of unlocking the bright screen with the interest screen will take a long time, about 1000ms, which is contrary to the current rapid and efficient development trend of electronic devices. Therefore, how to provide a fingerprint unlocking method that can reduce the fingerprint unlocking time is a major technical problem that those skilled in the art hope to continue to improve.

In view of this, the present invention provides a fingerprint unlocking method, which can reduce the time for fingerprint unlocking.

In order to achieve the above object, the present invention provides the following technical solution: A fingerprint unlocking method, which is applied to a fingerprint unlocking system, the fingerprint unlocking system includes a touch display integrated chip, a fingerprint recognition chip and a processor, the touch display integrated chip and the The fingerprint identification chips are all connected to the processor. The fingerprint unlocking method includes: acquiring touch commands based on user operations; reporting interrupts and triggering wake-up LCD commands; collecting fingerprints corresponding to the user operations; sending window drawing commands; Compare whether the fingerprint and the preset fingerprint match. If it is, trigger the setting of the power mode and execute the unlocking process, then turn on the backlight; if not, send the dormant LCD command to put the LCD in the backlight off state.

Optionally, the reporting an interrupt and triggering a wake-up LCD instruction includes: triggering a wake-up LCD instruction while reporting the interrupt.

Optionally, the sending a window drawing instruction to compare whether the fingerprint and the preset fingerprint match includes: comparing whether the fingerprint and the preset fingerprint match to send the window drawing instruction at the same time.

A fingerprint unlocking device includes: an acquisition module for acquiring touch commands based on user operations; a trigger module for reporting interrupts and triggering a wake-up LCD command; The collection module is used to collect the fingerprint corresponding to the user operation; the sending module is used to send the window drawing instruction; the comparison module is used to compare whether the fingerprint and the preset fingerprint match, and if so, trigger the setting After the power supply mode and the unlocking process are executed, the backlight is turned on; if not, a dormant LCD command is sent to put the LCD in the backlight off state.

Optionally, it also includes a timing module, which is used to simultaneously trigger the sending module and the comparison module to perform a preset action, and/or to control the trigger module to simultaneously report an interrupt And trigger LCD command to wake up.

A fingerprint unlocking system, the fingerprint unlocking system includes an integrated touch display chip, a fingerprint identification chip and a processor, the integrated touch display chip is electrically connected to the processor through a first preset interface and a first preset cable, The fingerprint identification chip is electrically connected to the processor through a second preset interface and a second preset cable, and the fingerprint unlocking system is used for: the fingerprint identification chip is used to obtain touch commands based on user operations; The integrated touch display chip is used to report an interrupt and trigger the wake-up LCD command; the fingerprint identification chip is also used to collect the fingerprint corresponding to the user operation; the integrated touch display chip is also used to send a window drawing instruction, and compare Whether the fingerprint and the preset fingerprint match, if it is, trigger the setting of the power mode and execute the unlocking process, the backlight is turned on; if not, send a dormant LCD command to put the LCD in the backlight off state.

Optionally, the integrated touch display chip is also used for triggering a wake-up LCD command while reporting an interrupt.

Optionally, the integrated touch display chip is also used for: Comparing whether the fingerprint and the preset fingerprint match, and send a window drawing instruction.

An electronic device includes an electronic device body and any one of the fingerprint unlocking devices described above.

Compared with the prior art, the technical solution provided by the present invention has the following advantages: The present invention provides a fingerprint unlocking method, which is applied to a fingerprint unlocking system. The fingerprint unlocking system includes a touch display integrated chip, a fingerprint recognition chip, and a processor. The touch display integrated chip and the fingerprint identification chip are both connected to the processor. The fingerprint unlocking method first obtains touch commands based on user operations, then reports an interrupt and triggers a wake-up LCD command, and then collects the user Operate the corresponding fingerprint, send a window drawing instruction and compare whether the fingerprint and the preset fingerprint match. If it is, trigger the setting of the power mode and execute the unlocking process, turn on the backlight; if not, send the dormant LCD command to make all The LCD is in the backlight off state. It can be seen that in this fingerprint unlocking method, a wake-up LCD command can be triggered after a finger is detected (when reporting an interrupt). Compared with the prior art, there is no need to initialize the LCD screen after determining the fingerprint comparison result, saving Time when the fingerprint is unlocked. In addition, in this embodiment, it is also possible to draw a window while comparing the fingerprints, and in a parallel manner to further save the unlocking time.

S31‧‧‧ Get touch command based on user operation

S32‧‧‧Report interrupt and trigger LCD command to wake up

S33‧‧‧ Collect fingerprint corresponding to the user operation

S34‧‧‧Send window drawing instruction

S35‧‧‧ Compare whether the fingerprint and the preset fingerprint match

21‧‧‧Touch display integrated chip

22‧‧‧Fingerprint recognition chip

23‧‧‧ processor

41‧‧‧Get Module

42‧‧‧Trigger module

43‧‧‧ Acquisition module

44‧‧‧send module

45‧‧‧ Comparison module

[Figure 1] is a schematic flowchart of a fingerprint unlocking method in the prior art.

[Figure 2] A fingerprint unlocking system applied to a fingerprint unlocking method provided by this embodiment Hardware schematic.

[FIG. 3] A schematic flowchart of a fingerprint unlocking method provided by this embodiment.

[FIG. 4] A schematic structural diagram of a fingerprint unlocking device provided in this embodiment.

5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

According to the background technology, the inventor found that the existing fingerprint unlocking bright screen process is performed in series, that is, the execution steps in FIG. 1 can only perform the next step after the execution of the previous step is completed. The LCD initialization time is longer, so the entire fingerprint unlocking time is also longer.

With the gradual improvement of the hardware performance of smart devices, the inventor found that the current fingerprint unlocking process will cause a waste of resources of the CPU of the smart electronic device to a certain extent in addition to the long time. That is, the current technology of unlocking the bright screen with the breathing screen has a problem that it takes too long and cannot effectively use the resources of the mobile phone CPU, and the user experience is poor.

Therefore, the embodiment of the present solution provides a fingerprint unlocking method, which is applied to a fingerprint unlocking system. As shown in FIG. 2, the fingerprint unlocking system includes an integrated touch display chip (IDC) 21, a fingerprint recognition chip (FPR) 22, and a processor 23 , Where the touch-display integrated chip (IDC) 21 and the fingerprint identification chip (FPR) 22 are connected to the processor 23.

Specifically, in this embodiment, the integrated touch display chip (IDC) 21 and the fingerprint identification chip (FPR) 22 do not have an interface connected to the processor 23 by default. Therefore, in this embodiment, the integrated touch display chip (IDC) 21 ) Add any interface of I2C/SPI/GPIO to 21, and connect this interface with processor 23 through FPC cable. Similarly, any interface of I2C/SPI/GPIO is added to the fingerprint recognition chip (FPR) 22, and the interface is connected to the processor 23 through the FPC cable.

Based on the above hardware, the fingerprint unlocking method provided in this embodiment, as shown in FIG. 3, includes: S31, obtaining touch commands based on user operations; S32, reporting an interrupt and triggering a wake-up LCD command; S33, collecting The fingerprint corresponding to the user's operation; S34, sending a window drawing instruction; S35, comparing whether the fingerprint and the preset fingerprint match, if it is, triggering the setting of the power mode and performing the unlocking process, lighting the backlight; if not, sending sleep LCD command to put the LCD in the backlight off state.

Wherein, the reporting interrupt and triggering the wake-up LCD command may be triggering the wake-up LCD command at the same time as reporting the interrupt. In addition, sending the window drawing instruction to compare whether the fingerprint and the preset fingerprint match may be: sending the window drawing instruction while comparing whether the fingerprint and the preset fingerprint match.

It should be noted that in this embodiment, it is preferable to execute the reporting interrupt and send the wake-up LCD command at the same time, but it is not limited to executing at the same time. Wake up the LCD after the time is up, such as after 50ms. The traditional LCD wake-up requires a power-on initialization process, which takes a long time. In this solution, the LCD controller is used to enter a low-power mode. When the fingerprint module detects a finger, it passes through the hardware interface (II2/SPI/ GPIO) sends a wake-up LCD command, which saves 300ms compared to the part placed on the operating system side.

In addition, because the upper layer bright screen process, a window drawing process is needed, that is, the process of preparing LCD data. This scheme parallels the process of drawing commands in windows and fingerprint verification (Authentication), which can save 100ms time.

In summary, compared with the prior art, this solution can enable the LCD to switch from sleep in mode to sleep out mode in advance. After the initialization is completed and enters the data receiving mode, the upper layer of the operating system only needs to send the image directly. can. It can save 400ms of dark screen unlocking time, that is, the fingerprint unlocking time achieved by this method is only 3/5 of the time in the prior art.

The fingerprint unlocking device provided by the embodiment of the present application will be described below. The fingerprint unlocking device described below and the fingerprint unlocking method in the foregoing correspond to each other. Specifically, as shown in FIG. 4, the fingerprint unlocking device includes: an acquisition module 41 for acquiring touch commands based on user operations; a trigger module 42 for reporting interrupts and triggering an LCD wake-up command; an acquisition module Group 43 is used to collect fingerprints corresponding to the user operation; sending module 44 is used to send window drawing instructions; comparison module 45 is used to compare whether the fingerprint and the preset fingerprint match, if it is, trigger After setting the power mode and performing the unlocking process, the backlight is turned on; if not, a sleep LCD command is sent to put the LCD in the backlight off state.

Based on the above embodiments, the fingerprint unlocking device provided by the embodiments of the present application further includes a timing module, and the timing module is used to simultaneously trigger the sending module and the comparison module to perform preset actions, and /Or control the trigger module to simultaneously report an interrupt and trigger an LCD wake-up command.

For the working principle of the device embodiment, please refer to the above method embodiment, and the description will not be repeated here.

Based on the above embodiment, this embodiment also provides a fingerprint unlocking system, including a touch display integrated chip, a fingerprint identification chip, and a processor. The touch display integrated chip passes through a first preset interface and a first preset row Is electrically connected to the processor, the fingerprint identification chip is electrically connected to the processor through a second preset interface and a second preset cable, the fingerprint unlocking system is used for: the fingerprint identification chip is used for Obtain touch commands based on user operations; the integrated touch display chip is used to report an interrupt and trigger the wake-up LCD command; the fingerprint identification chip is also used to collect fingerprints corresponding to the user operation; the integrated touch display chip also Used to send a window drawing instruction and compare whether the fingerprint and the preset fingerprint match. If it is, trigger the setting of the power mode and execute the unlocking process, light the backlight; if not, send the dormant LCD instruction to make the LCD The backlight is off.

Optionally, the integrated touch display chip is also used for triggering a wake-up LCD command while reporting an interrupt.

Optionally, the integrated touch display chip is also used to: compare whether the fingerprint and the preset fingerprint match while sending a window drawing Command.

For the working principle of this system embodiment, please refer to the above method embodiment, and the description will not be repeated here.

Based on the above embodiment, this embodiment also provides an electronic device, as shown in FIG. 5, including the above fingerprint unlocking device. Among them, the electronic device in this article may be an electronic device with a fingerprint recognition function, such as a PC, a PAD, a mobile phone, and a wearable electronic device.

In summary, the present invention provides a fingerprint unlocking method, which is applied to a fingerprint unlocking system. The fingerprint unlocking system includes an integrated touch display chip, a fingerprint identification chip, and a processor. The integrated touch display chip and the fingerprint identification chip are both The processor is connected, and the fingerprint unlocking method first obtains touch commands based on user operations, then reports an interrupt and triggers a wake-up LCD command, then collects fingerprints corresponding to the user operations, sends window drawing commands, and compares the Whether the fingerprint and the preset fingerprint match, if it is, trigger the setting of the power mode and perform the unlocking process, the backlight is turned on; if not, send a dormant LCD command to put the LCD in the backlight off state. It can be seen that in this fingerprint unlocking method, a wake-up LCD command can be triggered after a finger is detected (when reporting an interrupt). Compared with the prior art, there is no need to initialize the LCD screen after determining the fingerprint comparison result, saving Time when the fingerprint is unlocked. In addition, in this embodiment, it is also possible to draw a window while comparing the fingerprints, and in a parallel manner to further save the unlocking time.

The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments may refer to each other. The above descriptions of the disclosed embodiments enable those skilled in the art Staff can implement or use the invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

S31‧‧‧ Get touch command based on user operation

S32‧‧‧Report interrupt and trigger LCD command to wake up

S33‧‧‧ Collect fingerprint corresponding to the user operation

S34‧‧‧Send window drawing instruction

S35‧‧‧ Compare whether the fingerprint and the preset fingerprint match

Claims (7)

A fingerprint unlocking method is applied to a fingerprint unlocking system. The fingerprint unlocking system is applied to an electronic device including an LCD. The fingerprint unlocking system includes a touch display integrated chip, a fingerprint identification chip, and a processor. The touch display integrated Both the chip and the fingerprint identification chip are connected to the processor. The fingerprint unlocking method includes: acquiring a touch command based on a user operation; reporting an interrupt and triggering a wake-up LCD command; collecting a fingerprint corresponding to the user operation; sending A window drawing command; and compare whether the fingerprint matches a preset fingerprint, if it is, trigger a set power mode and perform an unlocking process, light a backlight; if not, send a sleep LCD command to make the The LCD is in this backlight off state. According to the fingerprint unlocking method described in claim 1, the reporting interruption and triggering the wake-up LCD instruction include: reporting the interruption and simultaneously triggering the wake-up LCD instruction. According to the fingerprint unlocking method described in claim 1, the sending of the window drawing instruction compares whether the fingerprint and the preset fingerprint match, including: sending the window drawing instruction while comparing the fingerprint and the preset fingerprint . A fingerprint unlocking system is applied to an electronic device including an LCD. The fingerprint unlocking system includes a touch display integrated chip, a fingerprint identification chip, and a processor. The touch display integrated chip passes through a first preset interface and a first A preset cable is connected to the processor Connected, the fingerprint identification chip is electrically connected to the processor through a second preset interface and a second preset cable, the fingerprint unlocking system is used for: the fingerprint identification chip is used to obtain a touch based on a user operation Command; the integrated touch display chip is used to report an interrupt and trigger a wake-up LCD command; the fingerprint recognition chip is also used to collect a fingerprint corresponding to the user operation; the integrated touch display chip is also used to send a window drawing instruction, and Compare whether the fingerprint matches a preset fingerprint. If it is, trigger a set power mode and perform an unlock process, then light a backlight; if not, send a sleep LCD command to make the LCD in the backlight off state . According to the fingerprint unlocking system described in claim 4, the integrated touch display chip is also used for triggering the wake-up LCD command while reporting an interrupt. According to the fingerprint unlocking system described in claim 4, the touch display integrated chip is further used for comparing the fingerprint and the preset fingerprint while sending the window drawing instruction. An electronic device includes an electronic device body and a fingerprint unlocking system according to any one of claims 4 to 6.

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