TW201931197A - Electronic system and operation method thereof - Google Patents

Abstract

An electronic system is provided. The electronic system includes a fingerprint sensor for generating a fingerprint sensing image signal, a plurality of touch sensors disposed neighboring to the fingerprint sensor, each touch sensor generating a touch sensing signal, and a processor for determining whether to enter a fingerprint sensing mode and to utilize the fingerprint sensor to generate the fingerprint sensing image for fingerprint identification.

Description

Electronic system and method of operation

The present invention refers to an electronic system and method of operation, and more particularly to an electronic system and method of operation for use with a fingerprint sensor.

With the increasing demand for information security, various electronic products equipped with fingerprint recognition functions are commonly used, such as notebook computers, smart phones, personal digital assistants (PDAs), tablet PCs, and the like. Compared with the traditional way of verifying by password or graphic, the fingerprint identification function will provide further security.

In product design, many electronic products place the fingerprint reader under the under glass to enhance the aesthetics and flexibility of the device design, for example, can be hidden under the glass surface of the display. However, since the area of the fingerprint reader is usually small, it tends to occupy only a small portion of the surface of the device. Therefore, if there is no indication or groove, the user can easily fail the fingerprint verification due to pressing in the wrong position, thereby affecting the normal user operation. For example, taking Microsoft operating system Windows 10 as an example, when the fingerprint verification program fails three times, it will lock the system and force the user to log in by password or other means. In this case, a notebook or mobile communication device using a fingerprint reader disposed under the surface glass, if there is no printing or a groove to indicate the position of the fingerprint identifier allows the user to press the correct position, instead The sensor error or the induction is invalid due to the positional deviation of the fingerprint pressing, which causes the user's operation trouble and the experience of poor experience. On the other hand, if an additional groove or print is provided to indicate the position of the fingerprint identifier, the advantage of the transparent appearance of the fingerprint reader disposed under the surface glass is lost. Therefore, the prior art is necessary for improvement.

Accordingly, the present invention is primarily directed to an electronic system and method of operation for use with a fingerprint sensor to address the above problems.

The invention discloses an electronic system, comprising: a fingerprint sensor for generating a fingerprint sensing image signal; a plurality of touch sensors disposed adjacent to the fingerprint sensor, each touch sensing The device is configured to generate a touch sensing signal, and a processor configured to determine whether to enter a fingerprint sensing mode and utilize the fingerprint sensor according to the touch sensing signal generated by the plurality of touch sensors The fingerprint sensing signal generated is fingerprinted.

The present invention further discloses an operation method for an electronic system, the electronic system includes a fingerprint sensor and a processor, and a plurality of touch sensors, wherein the plurality of touch sensors are disposed adjacent to the fingerprint sense Each of the touch sensors is configured to generate a touch sensing signal, wherein the method includes: sensing a plurality of touch sensing signals by using the plurality of touch sensors; the processor Determining whether to input an offset according to a plurality of touch sensing signals to determine whether to enter a fingerprint sensing mode; and in the fingerprint sensing mode, using the fingerprint sensor to sense a fingerprint sensing image signal and executing a fingerprint Identification procedure.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of an electronic system 1 according to an embodiment of the present invention. The electronic system 1 can be applied to various electronic products, such as a mobile communication device, a notebook computer, a smart watch, a wearable device, a head mounted device, and a portable electronic device, but is not limited thereto. The electronic system 1 includes a processor 10, a fingerprint sensor 20, touch sensors 30_U1 to 30_U3, 30_D1 to 30_D3, 30_L1 to 30_L3, 30_R1 to 30_R3, and backlight units 40_U, 40_D, 40_L, 40_R. . The fingerprint sensor 20 is used to generate a fingerprint sensing image signal. For example, when the user places a finger on the fingerprint sensor 20, the fingerprint sensor 20 detects the user's finger and generates a fingerprint feeling with different shades based on the ridge and the furrow. Video signal measurement. The fingerprint sensor 20 can be a capacitive fingerprint sensor, an optical fingerprint sensor, or an ultrasonic fingerprint sensor, but the embodiment of the present invention is not limited thereto.

Further, the touch sensor in the electronic system 1 is disposed adjacent to the fingerprint sensor 20 . The touch sensor in the electronic system 1 can be disposed adjacent to the fingerprint sensor 20. Each touch sensor is used to generate a touch sensing signal. For example, the touch sensor in the electronic system 1 can be disposed around the fingerprint sensor 20 . For example, the touch sensors 30_U1 to 30_U3, 30_D1 to 30_D3, 30_L1 to 30_L3, and 30_R1 to 30_R3 are respectively disposed around the fingerprint sensor 20. For example, as shown in FIG. 1, the fingerprint sensor 20 includes an upper side 20a, a lower side 20b, a left side 20c and a right side 20d, and each side of the fingerprint sensor 20 has at least one side. The proximity of the touch sensor is set. In addition, the shape of the touch sensor of the present invention may be linear or curved to enhance the position of the offset. The touch sensors can also be separated by a certain distance. The touch sensor of the present invention can be a capacitive touch sensor, a resistive touch sensor, an acoustic touch sensor, an optical touch sensor or an electromagnetic touch sensor. However, the embodiments of the present invention are not limited thereto.

The processor 10 determines whether to control the electronic system 1 to enter the fingerprint sensing mode according to the touch sensing signals generated by the touch sensors, and uses the fingerprint sensing signals generated by the fingerprint sensor 20 to perform fingerprint matching. Identification to achieve the purpose of fingerprint identification. More specifically, the processor 10 determines whether the touch sensor is touched or a touch event occurs according to the touch sensing signals generated by the touch sensors. Further, the processor 10 determines whether the electronic system 1 enters the fingerprint sensing mode according to the touch condition or the touch event condition of each touch sensor to activate the fingerprint sensor 20 to detect and generate the fingerprint sensing signal.

For the operation mode of the electronic system 1, please refer to FIG. 2, which is a schematic diagram of a process 2 according to an embodiment of the present invention. In step S202, the electronic system 1 starts to provide the user with input fingerprints to the fingerprint sensor 20. The touch sensor of the electronic system 1 senses the corresponding touch sensing signal. The touch sensing signals sensed by the touch sensors can be provided to the processor 10.

In step S204, the processor 10 determines, according to the touch sensing signals generated by the touch sensors, whether the electronic system 1 determines whether to input an offset, and further determines whether to enter the fingerprint sensing mode. The processor 10 determines whether the touch sensor is touched or a touch event occurs according to the touch sensing signals generated by the touch sensors. The processor 10 determines whether the electronic system 1 enters the fingerprint sensing mode according to the touch condition or the touch event condition of each touch sensor to activate the fingerprint sensor 20 to detect and generate the fingerprint sensing signal. If the processor 10 determines that the fingerprint sensing mode can be entered, indicating that the user input operation and the input position are correct and/or the current electronic system 1 is operating normally, step S206 is performed. When the processor 10 determines that the abnormal condition does not enter the fingerprint sensing mode, step S210 is performed.

The processor 10 determines whether the input operation position of the fingerprint sensor 20 is offset according to the touch sensing signal generated by each touch sensor, and then determines whether to enter the fingerprint sensing mode. In an embodiment, when the processor 10 determines, according to the touch sensing signals generated by the touch sensors, no touch sensor is touched by a finger or only a small portion of the touch sensing is performed. When the device is touched by the finger, the processor 10 can determine that the user inputs the operation position for the fingerprint sensor 20 and determines to enter the fingerprint sensing mode. For example, referring to FIG. 3, if the processor 10 determines that the touch sensors 30_U1, 30_D1, 30_L1, and 30_R1 are currently touched by the finger, the touch sensors 30_U2 to 30_U3, 30_D2 to 30_D3, 30_L2 to 30_L3, 30_R2~30_R3 is not currently touched by the finger, which means that most of the user's finger is placed on the fingerprint sensor 20, so the processor 10 determines that the electronic system 1 enters the fingerprint sensing mode for the fingerprint recognition process.

In another embodiment, when the processor 10 determines, according to the touch sensing signals generated by the touch sensors, the touch sensor near one side of the fingerprint sensor 20 is touched by the finger. In a case where the touch sensor on the other side of the fingerprint sensor 20 is touched by a finger, the processor 10 can determine that the user inputs the operation position to the fingerprint sensor 20. It is offset without entering the fingerprint sensing mode. For example, referring to FIG. 4, the processor 10 determines that the touch sensors 30_D1 ～ 30_D2, 30_L1 ～ 30_L3 are currently touched by the finger, and the touch sensors 30_U1 ～ 30_ U3, 30_D3, 30_R1 ～ 30_ R3 are not currently available. Touched by the finger, this means that the user's finger is biased to the lower left, so the processor 10 determines that the finger is offset without entering the fingerprint sensing mode.

In yet another embodiment, in order to avoid the problem that the fingerprint sensor 20 is locked by the system when it is accidentally touched, for example, the electronic system is placed in the backpack and other objects in the backpack touch the fingerprint sensor. 20, when the processor 10 determines, according to the touch sensing signals generated by the touch sensors, that there are more than a predetermined proportion of the touch sensors in all the touch sensors (for example, more than 30%, 40) The touch sensor of %, 50%, 60%, 70% or 80%, but the embodiment of the present invention is not limited thereto. When the situation is touched by the finger, the processor 10 can determine the current The user is mistakenly touched by the fingerprint sensor 20 without entering the fingerprint sensing mode.

After determining that the user's finger is correctly inputting the operation position according to the touch sensing signal in step S204, step S206 is executed, the electronic system 1 enters the fingerprint sensing mode, and the fingerprint sensor 20 is activated. The fingerprint sensor 20 senses the fingerprint sensing image signal to perform a related fingerprint identification process. In this way, the fingerprint sensing image signal sensed by the fingerprint sensor 20 can be provided as a pattern recognition program, and the verification failure caused by the finger position deviation does not occur, and the fingerprint can be achieved thereby. The power saving purpose of the sensor 20.

When the processor 10 determines that the user operates abnormally or the system has an abnormality without entering the fingerprint sensing mode, step S210 is performed. In step S210, the processor 10 generates a prompt signal or controls other devices to generate a prompt signal to notify the user that the current fingerprint input position is incorrect, a false touch occurs, the system is abnormal, or the user is prompted to correct the fingerprint input position. For example, a prompt signal can be generated in various ways (eg, text, sound, voice, light, or vibration) to notify the user. For example, when it is determined that the fingerprint input position is offset, the processor 10 can control a display to display a prompt signal to guide the user to move the finger to the correct position. For example, when it is determined that the fingerprint input position is offset, the processor 10 may control at least one of the backlight units 40_U, 40_D, 40_L, 40_R to generate a prompt signal to guide the user to move the finger to The correct location. For example, please continue to refer to FIG. 4, after the processor 10 determines that the user's finger is biased to the lower left according to the touch sensing signal of each touch sensor, the processor 10 can control the backlight unit 40_R to emit light (ie, , the prompt signal is generated), when the user sees the backlight unit 40_R showing the direction arrow, the finger can be moved to the right to correct the condition of the finger offset. In addition, the illumination mode of the backlight unit can be multi-segment display and/or flashing display to enhance the user experience.

For an embodiment of the backlight unit, for example, please refer to FIG. 5, which is a schematic diagram of an embodiment of a side portion of the backlight unit 40_R of FIG. The user's finger is placed on one of the transparent glass substrates 500 of the electronic system 1 to input a fingerprint to the fingerprint sensor 20. The backlight unit 40_R includes a light guiding portion 502 and a light source element 504. The light source element 504 can emit light, and after the light is guided by the light guiding part 502, after being irradiated through the touch sensor 30_R, the user can see that the backlight unit 40_R emits light.

The backlight unit may also be disposed under each of the touch sensors. For example, please refer to FIG. 6 , which is a schematic diagram of another embodiment of the backlight unit of the electronic system 1 of FIG. 1 . The electronic system 1 includes backlight units 40_U1 to 40_U3, 40_D1 to 40_D3, 40_L1 to 40_L3, and 40_R1 to 40_R3. As shown in FIG. 6, each backlight unit is disposed under a corresponding touch sensor. When the finger position is offset, the backlight unit can be illuminated to assist the user in moving the finger to the correct position. For example, when it is determined that the touch sensors 30_U1 ～ 30_U2 are touched, the processor 10 controls the backlight units 40_D1 ～ 40_D3 to illuminate and emit light. When the user sees that the backlight units 40_D1 ～ 40_D3 emit light, the user needs to move the finger toward Move down to correct the condition of the finger offset.

On the other hand, the processor 10 can calculate the offset of the finger according to the touch condition determined by the touch sensing signals of the touch sensors, and generate a second prompt signal or control other The device generates a second prompt signal to inform the user of the amount of moving distance to be corrected. For example, as shown in FIG. 6, the distance between the fingerprint sensor 20 and the touch sensor 30_U1 is d1, and the distance between the fingerprint sensor 20 and the touch sensor 30_U2 is d1+d2. The distance between the fingerprint sensor 20 and the touch sensor 30_U3 is d1+d2+d3. When the processor 10 determines that the touch sensors 30_U1 ～ 30_U2 are touched, the processor 10 can control the backlight units 40_D1 ～ 40_D2 to illuminate and emit light. When the user sees that the backlight units 40_D1 ～ 40_D2 emit light, the processor 10 needs to know The finger moves down and the distance to be moved is d1+d2 to correct the condition of the finger offset.

The processor 10 can also perform a specific function according to the touch condition determined by the touch sensing signals of the touch sensors, for example, when the processor 10 determines that the touch sensors 30_L3 30 30_L3 are sequentially touched. (For example, the touch sensor 30_L3 à touch sensor 30_L2 à touch sensor 30_L1, such as a finger sliding from left to right), is indicated as starting the fingerprint recognition function or other specified functions. The processor 10 can initiate a fingerprinting function or other specified function.

In addition, please refer to FIG. 7, which is a schematic diagram of an embodiment of the processor 10 in FIG. 1. Processor 10 includes an analog to digital converter 702 and a microcontroller 704. The analog digital converter 702 is configured to receive the touch sensing signal generated by the touch sensor and convert the analog touch sensing signal into a digital form touch sensing signal. The microcontroller 704 performs various execution steps of the processor 10 as described above in accordance with the digital form of the touch sensing signal.

In summary, the present invention utilizes a touch sensor and a backlight unit disposed around the fingerprint identifier, and the touch sensor senses whether the finger is pressed at the correct position, and uses the backlight unit when the finger is offset. A prompt is provided to assist the user to move the finger to the correct position to avoid the verification failure of the user due to the positional deviation of the finger, and also to achieve the power saving effect of the fingerprint sensor. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1‧‧‧Electronic system

2‧‧‧ Process

10‧‧‧ processor

20‧‧‧Finger sensor

20a‧‧‧Upside

20b‧‧‧Bottom side

20c‧‧‧Left side

20d‧‧‧ right side

30_U1～30_U3, 30_D1～30_D3, 30_L1～30_L3, 30_R1～30_R3‧‧‧ touch sensor

40_ U, 40_U1 ~ 40_U3, 40_ D, 40_D1 ~ 40_D3, 40_ L, 40_L1 ~ 40_L3, 40_ R, 40_R1 ~ 40_R3‧‧‧ Backlight unit

500‧‧‧Transparent glass substrate

502‧‧‧Light Guide

504‧‧‧Light source components

506‧‧‧Decorative ink layer

702‧‧‧ Analog Digital Converter

704‧‧‧Microcontroller

D1, d2, d3‧‧‧ distance

S200, S202, S204, S206, S208, S210‧‧‧ steps

FIG. 1 is a schematic diagram of an electronic system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a process of an embodiment of the present invention. FIG. 3 and FIG. 4 are respectively schematic diagrams showing an embodiment of a user inputting a fingerprint to a fingerprint sensor. Fig. 5 is a schematic view showing an embodiment of a side portion of the backlight unit of Fig. 1. Fig. 6 is a schematic view showing another embodiment of the backlight unit of Fig. 1. Figure 7 is a schematic diagram of an embodiment of the processor in Figure 1.

Claims (7)

An electronic system includes: a fingerprint sensor for generating a fingerprint sensing image signal; a plurality of touch sensors disposed adjacent to the fingerprint sensor, each touch sensor being used to generate a touch sensing signal; and a processor for determining whether to enter a fingerprint sensing mode and using the fingerprint sensor according to the touch sensing signal generated by the plurality of touch sensors The fingerprint sensing signal is fingerprinted. The electronic system of claim 1, wherein the fingerprint sensor comprises a first side, a second side, a third side and a fourth side, the plurality of touch senses At least one first touch sensor of the plurality of touch sensors is disposed adjacent to the first side of the fingerprint sensor, and at least one of the plurality of touch sensors is disposed adjacent to the first touch sensor At least one third touch sensor of the plurality of touch sensors is disposed adjacent to the third side of the fingerprint sensor, and the plurality of the second side of the fingerprint sensor At least one fourth touch sensor of the touch sensor is disposed adjacent to the fourth side of the fingerprint sensor. The electronic system of claim 1, wherein the fingerprint sensor is a capacitive fingerprint sensor, an optical fingerprint sensor or an ultrasonic fingerprint sensor. The electronic system of claim 1, further comprising: a backlight unit controlled by the processor for generating a prompt signal to notify the user to correct the input offset condition. An operation method is provided for an electronic system, the electronic system includes a fingerprint sensor and a processor, and a plurality of touch sensors disposed adjacent to the fingerprint sensor. Each of the touch sensors is configured to generate a touch sensing signal, wherein the operating method includes: using the plurality of touch sensors to sense a plurality of touch sensing signals; the processor is based on the plurality of touches The touch sensing signal determines whether an offset is input to determine whether to enter a fingerprint sensing mode; and in the fingerprint sensing mode, the fingerprint sensor is used to sense the fingerprint sensing image signal and execute a fingerprint recognition program. The operation method of claim 5, wherein the fingerprint sensor is a capacitive fingerprint sensor, an optical fingerprint sensor or an ultrasonic fingerprint sensor. The operation method of claim 5, further comprising: generating a prompt signal when the input offset is determined and not entering the fingerprint sensing mode, to notify the user to correct the input offset condition.