TW201942801A - Fingerprint unlocking method, device, 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, device, system and electronic equipment

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

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

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

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

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

To achieve the above objective, the present invention provides the following technical solutions:

A fingerprint unlocking method is applied to a fingerprint unlocking system. The fingerprint unlocking system includes a touch display integrated chip, a fingerprint identification chip, and a processor. The touch display integrated chip and the fingerprint identification chip are connected to the processor. The fingerprint unlocking method includes:

Obtaining touch instructions based on user operations;

Report an interrupt and trigger the wake-up LCD command;

Collecting a fingerprint corresponding to the user operation;

Send window drawing instructions;

Compare whether the fingerprint and the preset fingerprint match, and if yes, trigger the setting of the power mode and execute the unlocking process, then turn on the backlight; if not, send a sleep LCD instruction to make the LCD in the backlight off state.

Optionally, the reporting interrupt and triggering the wake-up LCD instruction include:

The interrupt LCD triggers the wake-up LCD command at the same time.

Optionally, the sending a window drawing instruction to compare whether the fingerprint and the preset fingerprint match includes:

Send a window drawing instruction while comparing whether the fingerprint and the preset fingerprint match.

A fingerprint unlocking device includes:

An acquisition module for acquiring a touch instruction based on a user operation;

Trigger module for reporting interrupts and triggering wake-up LCD commands;

A collection module, configured to collect a fingerprint corresponding to the user operation;

A sending module for sending a window drawing instruction;

The comparison module is used to compare whether the fingerprint and the preset fingerprint match. If it is, trigger the setting of the power mode and perform the unlocking process, then turn on the backlight; if not, send the sleep LCD command to make the LCD be in The backlight is off.

Optionally, it also includes a timing module, which is used to trigger the sending module and the comparison module to perform preset actions at the same time, and / or control the triggering module to report an interrupt at the same time. And trigger wake-up LCD commands.

A fingerprint unlocking system comprising a touch display integrated chip, a fingerprint identification chip and a processor, the touch display integrated 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. The fingerprint unlocking system is configured to:

The fingerprint recognition chip is used to obtain a touch instruction based on a user operation;

The touch display integrated chip is used for reporting an interrupt and triggering a wake-up LCD instruction;

The fingerprint identification chip is further configured to collect a fingerprint corresponding to the user operation;

The touch-display integrated 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 perform the unlocking process, then turn on the backlight; if not, send the sleep LCD. Instructions to make the LCD in a backlight off state.

Optionally, the integrated touch display chip is further used for:

The interrupt LCD triggers the wake-up LCD command at the same time.

Optionally, the integrated touch display chip is further used for:

Send a window drawing instruction while comparing whether the fingerprint and the preset fingerprint match.

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

Compared with the prior art, the technical solution provided by the present invention has the following advantages:

The 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 identification chip, and a processor. The touch-display integrated chip and the fingerprint identification chip are all related to the processing. The fingerprint unlocking method first obtains a touch instruction based on a user operation, then reports an interrupt and triggers a wake-up LCD instruction, and then collects a fingerprint corresponding to the user operation, sends a window drawing instruction and compares the fingerprint and the pre- Set whether the fingerprints match, if yes, trigger the setting of the power mode and perform the unlocking process, then turn on the backlight; if not, send a sleep LCD instruction to make the LCD in the backlight off state. It can be seen that in this fingerprint unlocking method, the wake-up LCD command can be triggered after detecting a finger (when the report is interrupted). Compared with the prior art, there is no need to initialize the LCD screen after determining the fingerprint comparison result, saving The time the fingerprint was unlocked. In addition, in this embodiment, it is also possible to draw a window while comparing the fingerprints, and further save the unlocking time in a parallel manner.

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to 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 creative efforts shall fall within the protection scope of the present invention.

It can be known from the background technology that the inventor finds that the existing fingerprint unlocking bright screen process is performed in series, that is, the execution steps in FIG. 1 can be executed only after the previous step is completed. The LCD takes a long time to initialize, so the entire fingerprint unlocking time is also long.

With the gradual improvement of the hardware performance of smart devices, the inventors found that in addition to the long time required for the current fingerprint unlocking process, the CPU resources of smart electronic devices will be wasted to a certain extent. That is, the current technology for unlocking and brightening the 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, this embodiment of the present invention provides a fingerprint unlocking method, which is applied to a fingerprint unlocking system. As shown in FIG. 2, the fingerprint unlocking system includes a touch display integrated chip (IDC) 21, a fingerprint recognition chip (FPR) 22, and a processor 23. The touch display integrated chip (IDC) 21 and the fingerprint recognition chip (FPR) 22 are both connected to the processor 23.

Specifically, in this embodiment, the touch display integrated chip (IDC) 21 and the fingerprint recognition chip (FPR) 22 are preset without an interface connected to the processor 23. Therefore, in this embodiment, the touch display integrated chip (IDC) ) Add any interface of I2C / SPI / GPIO in 21, and connect this interface to 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 an FPC cable.

Based on the above hardware, the fingerprint unlocking method provided in this embodiment, as shown in FIG. 3, includes:

S31. Acquire a touch instruction based on a user operation;

S32. Report an interrupt and trigger the wake-up LCD instruction;

S33. Collect a fingerprint corresponding to the user operation;

S34. Send a window drawing instruction.

S35. Compare whether the fingerprint and the preset fingerprint match, and if yes, trigger the setting of the power mode and perform the unlocking process, then turn on the backlight; if not, send a sleep LCD instruction to make the LCD in the backlight off state.

The reporting interrupt and triggering the wake-up LCD instruction may be triggering the wake-up LCD instruction while reporting the interrupt. In addition, the sending 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, the reporting interrupt and the sending wake-up LCD instruction are preferably executed simultaneously, but are not limited to being executed at the same time. For example, the LCD can be woken up after a preset time arrives after the reporting interruption, such as after 50 ms. 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 the hardware interface (II2 / SPI / GPIO) Sending the wake-up LCD instruction can save 300ms compared to this part on the operating system.

In addition, since the upper layer is bright, a window drawing process is needed, that is, a process of preparing LCD data. In this solution, the window drawing instruction process is performed in parallel with fingerprint authentication, which can save 100ms of time.

In summary, compared with the prior art, this solution can make the LCD switch from sleep in mode to sleep out mode in advance. After initialization, it enters the ready-to-receive data mode. 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 in the embodiment of the present application is described below. The fingerprint unlocking device described below and the fingerprint unlocking method mentioned above correspond to each other. Specifically, the fingerprint unlocking device, as shown in FIG. 4, includes:

The obtaining module 41 is configured to obtain a touch instruction based on a user operation;

A trigger module 42 for reporting an interrupt and triggering a wake-up LCD instruction;

A collection module 43 for collecting a fingerprint corresponding to the user operation;

A sending module 44 for sending a window drawing instruction;

The comparison module 45 is used to compare whether the fingerprint and the preset fingerprint match. If yes, trigger the setting of the power mode and perform the unlocking process, then turn on the backlight; if not, send a sleep LCD command to enable the LCD. The backlight is off.

Based on the above embodiments, the fingerprint unlocking device provided in the embodiments of the present application further includes a timing module, which is used to trigger the sending module and the comparison module to perform preset actions at the same time, and And / or controlling the trigger module to simultaneously report an interrupt and trigger a wake-up LCD command.

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

Based on the above embodiment, this embodiment also provides a fingerprint unlocking system, which includes a touch display integrated chip, a fingerprint identification chip, and a processor. The touch display integrated chip passes a first preset interface and a first preset row. And the processor 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, and the fingerprint unlocking system is configured to:

The fingerprint recognition chip is used to obtain a touch instruction based on a user operation;

The touch display integrated chip is used for reporting an interrupt and triggering a wake-up LCD instruction;

The fingerprint identification chip is further configured to collect a fingerprint corresponding to the user operation;

The touch-display integrated 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 perform the unlocking process, then turn on the backlight; if not, send the sleep LCD Instructions to make the LCD in a backlight off state.

Optionally, the integrated touch display chip is further used for:

The interrupt LCD triggers the wake-up LCD command at the same time.

Optionally, the integrated touch display chip is further used for:

Send a window drawing instruction while comparing whether the fingerprint and the preset fingerprint match.

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

On the basis of the above embodiment, this embodiment further provides an electronic device, as shown in FIG. 5, including the above-mentioned fingerprint unlocking device. 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, or a wearable electronic device.

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

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

S31‧‧‧Get touch instructions based on user operation

S32‧‧‧ Reports an interrupt and triggers the wake-up LCD command

S33‧‧‧ collect the fingerprint corresponding to the user operation

S34‧‧‧ Send window drawing instruction

S35‧‧‧ Compare the fingerprint and the preset fingerprint

21‧‧‧Touch display integrated chip

22‧‧‧Fingerprint identification chip

23‧‧‧Processor

41‧‧‧Get Module

42‧‧‧Trigger Module

43‧‧‧ Acquisition Module

44‧‧‧ sending module

45‧‧‧Comparison Module

[FIG. 1] A schematic flowchart of a fingerprint unlocking method in the prior art. [FIG. 2] A hardware schematic diagram of a fingerprint unlocking system applied by a fingerprint unlocking method provided in this embodiment. [FIG. 3] A flowchart of a fingerprint unlocking method provided in 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.

Claims (9)

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 chip and the fingerprint identification chip are both connected to the processor. The fingerprint unlocking method includes: obtaining a touch instruction based on a user operation; reporting an interrupt and triggering a wake-up LCD instruction; collecting a fingerprint corresponding to the user operation; sending A window drawing instruction; and whether the fingerprint and a preset fingerprint match, if yes, trigger a set power mode and execute an unlock process, then light up a backlight; if not, send a sleep LCD instruction 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: triggering the wake-up LCD instruction while reporting the interruption. According to the fingerprint unlocking method described in claim 1, sending the window drawing instruction to compare whether the fingerprint and the preset fingerprint match includes sending the window drawing instruction while comparing the fingerprint and the preset fingerprint. . A fingerprint unlocking device is applied to an electronic device including an LCD. The fingerprint unlocking device includes: an acquisition module for acquiring a touch instruction based on a user operation; a trigger module for reporting an interrupt and Trigger a wake-up LCD instruction; a capture module for collecting a fingerprint corresponding to the user operation; a sending module for sending a window drawing instruction; and a comparison module for comparing the fingerprint and a It is preset whether the fingerprints match, if yes, a backlight is triggered after setting a power mode and performing an unlocking process; if not, a sleep LCD instruction is sent to make the LCD in the backlight off state. The fingerprint unlocking device according to claim 4, further comprising a timing module, which is used to simultaneously trigger the sending module and the comparison module to perform preset actions, and / or control the triggering module. At the same time report the interrupt and trigger the wake-up LCD command. 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 a first preset interface and a first A preset cable 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, and the fingerprint unlocking system is used for: For obtaining a touch instruction based on a user operation; the touch display integrated chip is used to report an interrupt and trigger a wake-up LCD command; the fingerprint identification chip is also used to collect a fingerprint corresponding to the user operation; the touch display integrated chip It is also used to send a window drawing instruction and compare whether the fingerprint and a preset fingerprint match. If it is, trigger a set power mode and perform an unlock process to light up a backlight; if not, send a sleep LCD instruction To make the LCD in the backlight off state. According to the fingerprint unlocking system described in claim 6, the touch-display integrated chip is further configured to: trigger the wake-up LCD command while reporting an interrupt. According to the fingerprint unlocking system described in claim 6, the touch display integrated chip is further configured to: send the window drawing instruction while comparing the fingerprint and whether the preset fingerprint matches. An electronic device includes an electronic device body and the fingerprint unlocking device according to any one of claims 4 and 5.