Dual biometric detection system, secure identification method, application and electronic device

Abstract

The present invention provides a dual biometric detection system, a security identification method, an application and an electronic device. The detection system includes a transmitting module, a detection module and an emission light distribution module. The emission light distribution module is used to distribute the emission light to the first emission light path and the second emission light path, and transmit it to the first biometric feature part through the first emission light path, and transmit it to the second biometric feature part through the second emission light path. Only one transmitting module and one detection module are used, which realizes the dual functions of the first biometric feature part identification and the second biometric feature part identification. Users can choose the corresponding security identification mode according to the occasion or preference, which improves the user experience; the shared transmitting module and the detection module can significantly reduce the configuration cost, so that the electronic device has a higher cost-effectiveness advantage; the entire detection system occupies a small space, which is conducive to the structural configuration of the electronic device, and realizes an ultra-high screen-to-body ratio. The appearance of the electronic device is more fashionable, which is conducive to seizing the market opportunity.

Description

Technical Field

[0001] The present invention relates to the field of biometric identification technology, and in particular to a dual biometric feature detection system, a security identification method, an application and an electronic device. Background Art

[0002] With the advancement of technology and the improvement of people's living standards, users require more functions and fashionable appearance for human-computer interaction electronic devices such as mobile phones and tablets. The current development trend of human-computer interaction electronic devices is to have functions such as a higher screen-to-body ratio and biometric detection. At present, biometric detection is mainly face and fingerprint recognition. Traditionally, these two biometric recognition functions are based on 2D recognition and have low security. At present, the biometric detection that can take into account both screen-to-body ratio and high security is mainly face 3D recognition and photoelectric under-screen fingerprint recognition. At present, human-computer interaction electronic devices generally only have one of these recognition functions. The main reasons are: first, the structure of human-computer interaction electronic devices is compact, and the space is difficult to meet the simultaneous setting of face 3D recognition module and photoelectric under-screen fingerprint recognition module; second, the cost of dual modules will cause the human-computer interaction electronic devices to increase significantly, and lose the cost-effectiveness advantage. However, in the actual use of human-computer interaction electronic devices, if only the face 3D recognition function is provided, it cannot be effectively recognized when wearing a mask, causing inconvenience in unlocking. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the object of the present invention is to provide a dual biometric detection system, a security identification method, an application and an electronic device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is: a dual biometric detection system, comprising:

[0005] A transmitting module, which is used to transmit invisible light or visible light;

[0006] A first emission light path, which transmits the emission light from the emission module to the first biometric feature part;

[0007] A second emission light path, which transmits the emission light from the emission module to a second biometric feature part;

[0008] An emission light distribution module, used for distributing the emission light of the emission module to the first emission light path and the second emission light path;

[0009] A detection module, which is used to receive light reflected from the first biometric feature part or the second biometric feature part;

[0010] A first detection optical path, which is used to transmit the reflected light of the first biometric feature part to the detection module;

[0011] The second detection optical path is used to transmit the reflected light of the second biological characteristic part to the detection module.

[0012] By adopting the technical solution of the present invention, only one transmitting module and one detecting module are used, which realizes the dual functions of the first biometric feature part identification and the second biometric feature part identification. The user can choose the corresponding security identification mode according to the occasion or preference, thereby improving the user experience; the shared transmitting module and the detecting module can significantly reduce the configuration cost, so that the electronic device has a higher cost-effectiveness advantage; the entire detection system occupies a small space, which is conducive to the structural configuration of the electronic device, realizes an ultra-high screen-to-body ratio, and makes the electronic device more fashionable in appearance, which is conducive to seizing the market opportunity.

[0013] Furthermore, the transmitting module is an optical transmitting chip, the light emitted by the transmitting module is visible light or infrared light, and the detecting module is a light sensor for detecting visible light or infrared light.

[0014] Furthermore, the first biometric feature part is a human face, the light emitted by the transmitting module reaches the human face via a first transmitting optical path, the light reflected from the human face is transmitted to the detection module via a first detection optical path, and the transmitting module and the detection module detect the 3D structure of the human face through the emitted and reflected light and perform 3D face recognition.

[0015] Furthermore, the second biometric feature part is a finger fingerprint, the light emitted by the transmitting module reaches the finger fingerprint via a second transmitting optical path, the light reflected from the finger fingerprint is transmitted to the detection module via a second detection optical path, and the transmitting module and the detection module detect the finger fingerprint structure through the emitted and reflected light and perform finger fingerprint recognition.

[0016] Furthermore, it also includes a main body and a display unit connected to the main body, the transmitting module and the detecting module are arranged in the main body, the main body has an opening arranged corresponding to the first transmitting light path, the opening is located on the side of the display unit, the emitted light of the first transmitting light path passes through the opening to the human face, and the emitted light of the second transmitting light path is incident on the fingerprint of the finger on the upper surface of the display unit from the bottom of the display unit.

[0017] By adopting the above preferred solution, 3D face recognition and photoelectric fingerprint recognition are realized through the same transmitting module and detecting module, combining two commonly used mainstream high-security recognition technologies.

[0018] Furthermore, the transmission light distribution module includes a spectrometer and a power control module, the spectrometer transmits a part of the light of the transmission module to the first transmission light path, and transmits another part of the light of the transmission module to the second transmission light path, and the power control module is used to control the transmission light intensity of the transmission module.

[0019] Furthermore, the power control module controls the transmitting module to have at least a high power mode and a low power mode; when the transmitting module is in the high power mode, the intensity of light passing through the first transmitting light path can be emitted to the first biometric feature part and reflected to the detection module for first biometric feature part identification; when the transmitting module is in the low power mode, the intensity of light passing through the second transmitting light path can be emitted to the second biometric feature part and reflected to the detection module for second biometric feature part identification.

[0020] By adopting the above preferred solution, it is possible to configure the emission of light to two identification paths through a set of fixedly installed optical element groups, and the structure is more stable and reliable, which facilitates the integrated packaging of the entire detection system.

[0021] Furthermore, the emission light distribution module includes a reflective element and a first driving mechanism that drives the reflective element to switch between a first position state and a second position state; the first position state means that when the reflective element is in this position state, all the emission light of the emission module is emitted through the first emission light path to the first biometric feature part and reflected to the detection module for first biometric feature part identification; the second position state means that when the reflective element is in this position state, all the emission light of the emission module is emitted through the second emission light path to the second biometric feature part and reflected to the detection module for second biometric feature part identification.

[0022] By adopting the above preferred solution, the emission light is switched by the action of the reflective element, which is beneficial to saving the energy consumption of the emission module.

[0023] Furthermore, the reflected light distribution module includes a second driving mechanism for driving the transmitting module and the detection module to switch between a third position state and a fourth position state; the third position state means that when the transmitting module and the detection module are in this position state, all the emitted light of the transmitting module is emitted to the first biometric feature part through the first emission light path and reflected to the detection module for first biometric feature part identification; the fourth position state means that when the transmitting module and the detection module are in this position state, all the emitted light of the transmitting module is emitted to the second biometric feature part through the second emission light path and reflected to the detection module for second biometric feature part identification.

[0024] By adopting the above preferred solution, the matching of the two identification paths is achieved by moving the emission module and the detection module, which can simplify the configuration of the optical path elements.

[0025] A security identification method, using the above dual biometric detection system, includes a first biometric identification mode and a second biometric identification mode,

[0026] In the first biometric feature recognition mode, the emission light distribution module distributes the emission light of the emission module to the first emission light path, the emission light is transmitted to the first biometric feature part, and the light reflected by the first biometric feature part is then transmitted to the detection module via the first detection light path. The emission module and the detection module detect the structure of the first biometric feature part through the emitted and reflected light and perform the first biometric feature recognition;

[0027] In the second biometric feature recognition mode, the emission light distribution module distributes the emission light of the emission module to the second emission light path, the emission light is transmitted to the second biometric feature part, and the light reflected by the second biometric feature part is then transmitted to the detection module via the second detection light path. The emission module and the detection module detect the second biometric feature part structure and perform second biometric feature recognition through the emitted and reflected light.

[0028] By adopting the above technical solution, the dual functions of the first biometric feature part recognition and the second biometric feature part recognition are combined, and the user can choose the corresponding security recognition mode according to the occasion or preference, thereby improving the user experience.

[0029] An electronic device comprises the above-mentioned dual biometric feature detection system.

[0030] By adopting the above technical solution, electronic devices will have richer security identification options, more complete functions, lower manufacturing costs, higher cost-performance advantages, and a more fashionable appearance, which will help them seize market opportunities.

[0031] The above-mentioned dual biometric detection system and security identification method can be applied to products such as mobile phones, smart door locks, and car safety locks. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of face recognition according to the first embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of fingerprint recognition according to a first embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of face recognition according to a second embodiment of the present invention;

[0036] Figure 4 is a fingerprint recognition schematic diagram of a second embodiment of the present invention;

[0037] Figure 5 is a schematic diagram of face recognition according to a third embodiment of the present invention;

[0038] Figure 6 is a schematic diagram of fingerprint recognition according to a third embodiment of the present invention;

[0039] Figure 7 It is a schematic diagram of the local structure of an electronic device.

[0040] The numbers and letters in the figure represent the names of the corresponding parts:

[0041] 10-transmitting module; 20-detection module; 301-beam splitter prism; 302-single-pass lens; 303-reflecting prism; 304-beam modulating element; 305-reflecting prism; 306-reflecting prism; 307-beam modulating element; 308-beam modulating element; 31-first transmitting optical path; 32-second transmitting optical path; 41-first detection optical path; 42-second detection optical path; 60-main body; 61-display unit. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-2 As shown, the first embodiment of the present invention is: a dual biometric detection system, comprising:

[0044] A transmitting module 10, which is used to transmit invisible light or visible light;

[0045] A first emission light path 31, which transmits the emission light from the emission module 10 to the first biometric feature part;

[0046] A second emission light path 32, which transmits the emission light from the emission module 10 to the second biometric feature part;

[0047] An emission light distribution module, which is used to distribute the emission light of the emission module 10 to the first emission light path 31 and the second emission light path 32;

[0048] A detection module 20, which is used to receive light reflected from the first biometric feature part or the second biometric feature part;

[0049] A first detection optical path 41, which is used to transmit the reflected light of the first biometric feature to the detection module 20;

[0050] The second detection optical path 42 is used to transmit the reflected light of the second biometric feature part to the detection module 20 .

[0051] In this embodiment, the first biometric feature recognition or the second biometric feature recognition is achieved by sharing the emission module 10 and the detection module 20, and the distribution of the reflected light is achieved through the emission light distribution module.

[0052] In this embodiment, the transmitting module 10 may be, but is not limited to, a vertical cavity surface emitting laser (VCSEL). The transmitting module can project a patterned light beam of a preset pattern. The light emitted by the transmitting module 10 may be, but is not limited to, infrared light or near-infrared light.

[0053] In this embodiment, the detection module 20 may be, but is not limited to, an infrared light sensor.

[0054] In this embodiment, the first biometric identification may be 3D face recognition, and the second biometric identification may be finger fingerprint recognition, but it should be emphasized that this embodiment does not limit the recognition application of other biometrics of the present application.

[0055] In this embodiment, the first emission light path 31, the second emission light path 32, the first detection light path 41, and the second detection light path 42 can be constructed by a beam splitter prism 301, a single-pass lens 302, and a reflection prism 303. Figure 1 In the example, when performing 3D face recognition, the infrared light emitted by the transmitting module 10 is distributed by the beam splitter prism 301 in proportion, and a certain proportion of the infrared light is transmitted to the face. The infrared light emitted by the face is transmitted to the detection module 20 through the single-pass lens 302 to perform face 3D structure detection and complete 3D face recognition; another certain proportion of the infrared light distributed by the beam splitter prism 301 is reflected by the reflecting prism 303. Since there is no finger fingerprint blocking, this part of the infrared light is finally emitted and is not transmitted to the detection module 20. Figure 2 In the process of fingerprint recognition, the infrared light emitted by the transmitting module 10 is distributed in proportion by the beam splitter prism 301, and a certain proportion of the infrared light is transmitted outward through the first transmitting optical path 31, without being blocked by the face and reflected, and is not transmitted to the detection module 20; another certain proportion of the infrared light distributed by the beam splitter prism 301 is reflected by the reflecting prism 303 and transmitted to the fingerprint part of the finger, and the infrared light reflected from the fingerprint part is then reflected by the reflecting prism 303 and the single-pass lens 302 to the detection module 20, so as to perform fingerprint structure detection and complete fingerprint recognition.

[0056] In this embodiment, in order to ensure that the irradiation range of the infrared light meets the detection requirements, a beam modulating element may be added to each optical path, for example, a beam modulating element 304 is provided between the reflective prism 303 and the display unit 61 .

[0057] like Figure 3-4 As shown, a second embodiment of the present invention is provided. The main difference between this embodiment and the first embodiment of the present invention lies in the different implementation forms of the emission light distribution module for distributing the light emitted by the reflection module.

[0058] In this embodiment, the first emission light path 31, the second emission light path 32, the first detection light path 41, and the second detection light path 42 can be constructed by a reflection prism 305 and a reflection prism 306, and the reflection prism 305 is translated by a first driving mechanism (not shown in the figure). Figure 3 In the example, when performing 3D face recognition, the first driving mechanism moves the reflective prism 305 to the left, and the infrared light emitted by the transmitting module 10 can be directly incident on the face, and the infrared light emitted by the face can be directly transmitted to the detection module 20 to perform 3D face structure detection and complete 3D face recognition. Figure 4 As shown, when fingerprint recognition is performed, the infrared light emitted by the transmitting module 10 is transmitted to the fingerprint part through the reflecting prism 305 and the reflecting prism 306, and the fingerprint part reflects the corresponding infrared light to the detection module 20 to perform fingerprint structure detection and complete fingerprint recognition.

[0059] In this embodiment, in order to ensure that the irradiation range of the infrared light meets the detection requirements, a beam modulating element may be added to each optical path, for example, a beam modulating element 307 is provided between the reflective prism 305 and the display unit 61 .

[0060] In this embodiment, the specific form of the first driving mechanism is not limited and can be selected from the prior art, such as a screw pair, a gear rack and other driving forms, and the driving power device can be a motor.

[0061] like Figure 5-6 As shown, a third embodiment of the present invention is provided. The main difference between this embodiment and the first embodiment of the present invention lies in the different implementation forms of the emission light distribution module for distributing the light emitted by the reflection module.

[0062] In this embodiment, the first emission optical path 31 and the first detection optical path 41 can be constructed by the reflection module 10, the face, and the detection module 20, and the second emission optical path 32 and the second detection optical path 42 can be constructed by the reflection module 10, the finger fingerprint part, and the detection module 20. The reflection module 10 and the detection module 20 are driven to translate by a second driving mechanism (not shown in the figure) to match the face 3D detection and fingerprint detection. Figure 5In the example, when performing 3D face recognition, the second driving mechanism moves the reflection module 10 and the detection module 20 to the left, and the infrared light emitted by the emission module 10 can be directly incident on the face, and the infrared light emitted by the face can be directly transmitted to the detection module 20 to perform 3D face structure detection and complete 3D face recognition. Figure 6 As shown, when performing fingerprint recognition, the second driving mechanism moves the reflection module 10 and the detection module 20 to the right, and the infrared light emitted by the transmitting module 10 is transmitted to the fingerprint part through the beam modulation element 308. The fingerprint part reflects the corresponding infrared light to the detection module 20 to perform fingerprint structure detection and complete fingerprint recognition.

[0063] In this embodiment, the specific form of the second driving mechanism is not limited and can be selected from the prior art, such as a screw pair, a gear rack and other driving forms, and the driving power device can be a motor.

[0064] exist Figure 7 FIG. 4 shows a partial structure of an electronic device configured with a dual biometric detection system of the present invention, including a main body 60 and a display unit 61. Figure 7 It is just a simplified drawing. The display unit 61 may include an outermost protective film, which is attached to a glass plate, and a display screen is arranged inside the glass plate. The transmitting module 10 and the detecting module 20 are both arranged in the main body 60. The main body 60 has an opening for the light emitted by the reflecting module to pass through. The opening is located on the side of the display unit 61, and the emitted light passes through the opening to the face of the person. The emitted light is incident from the inner surface of the display unit 61 to the fingerprint on the upper surface of the display unit.

[0065] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. Dual biometric detection system, characterized in that, include: A transmitting module, which is used to transmit invisible light or visible light; A first emission light path, which transmits the emission light from the emission module to the first biometric feature part; A second emission light path, which transmits the emission light from the emission module to a second biometric feature part; An emission light distribution module, used for distributing the emission light of the emission module to the first emission light path and the second emission light path; A detection module, which is used to receive light reflected from the first biometric feature part or the second biometric feature part; A first detection optical path, which is used to transmit the reflected light of the first biometric feature part to the detection module; a second detection optical path, which is used to transmit the reflected light of the second biometric feature part to the detection module; The first biometric feature part is a human face. The light emitted by the transmitting module reaches the human face through a first transmitting optical path. The light reflected from the human face is transmitted to the detection module through a first detecting optical path. The transmitting module and the detection module detect the 3D structure of the human face and perform 3D face recognition through the emitted and reflected light. The second biometric feature part is a finger fingerprint. The light emitted by the transmitting module reaches the finger fingerprint through a second transmitting optical path. The light reflected from the finger fingerprint is transmitted to the detection module through a second detecting optical path. The transmitting module and the detection module detect the finger fingerprint structure and perform finger fingerprint recognition through the emitted and reflected light.

2. The dual biometric detection system according to claim 1, characterized in that: The light emitted by the emission module is visible light or infrared light, and the detection module is a light sensor for detecting visible light or infrared light.

3. The dual biometric detection system according to claim 2, characterized in that: It also includes a main body and a display unit connected to the main body, the transmitting module and the detecting module are arranged in the main body, the main body has an opening arranged corresponding to the first transmitting light path, the opening is located on the side of the display unit, the emitted light of the first transmitting light path passes through the opening to the human face, and the emitted light of the second transmitting light path is incident on the fingerprint of the finger on the upper surface of the display unit from the bottom of the display unit.

4. The dual biometric detection system according to claim 1, characterized in that: The transmission light distribution module includes a spectrometer and a power control module. The spectrometer transmits a part of the light of the transmission module to the first transmission light path and transmits another part of the light of the transmission module to the second transmission light path. The power control module is used to control the transmission light intensity of the transmission module.

5. The dual biometric detection system according to claim 4, characterized in that: The power control module controls the transmitting module to have at least a high power mode and a low power mode; when the transmitting module is in the high power mode, the intensity of the light passing through the first transmitting light path can be emitted to the first biometric feature part and reflected to the detection module for first biometric feature part identification; When the transmitting module is in low power mode, the intensity of the light passing through the second transmitting light path can be emitted to the second biometric feature and reflected to the detection module for second biometric feature recognition.

6. The dual biometric detection system according to claim 1, characterized in that: The emission light distribution module includes a reflective element and a first driving mechanism that drives the reflective element to switch between a first position state and a second position state; the first position state means that when the reflective element is in this position state, all the emission light of the emission module is emitted through the first emission light path to the first biometric feature part and reflected to the detection module for first biometric feature part identification; the second position state means that when the reflective element is in this position state, all the emission light of the emission module is emitted through the second emission light path to the second biometric feature part and reflected to the detection module for second biometric feature part identification.

7. The dual biometric detection system according to claim 1, characterized in that: The emission light distribution module includes a second driving mechanism that drives the emission module and the detection module to switch between a third position state and a fourth position state; the third position state means that when the emission module and the detection module are in this position state, all the emission light of the emission module is emitted to the first biometric feature part through the first emission light path and reflected to the detection module for first biometric feature part identification; the fourth position state means that when the emission module and the detection module are in this position state, all the emission light of the emission module is emitted to the second biometric feature part through the second emission light path and reflected to the detection module for second biometric feature part identification.

8. A security identification method, characterized in that: A dual biometric detection system according to any one of claims 1 to 7, comprising a first biometric recognition mode and a second biometric recognition mode, In the first biometric feature recognition mode, the light emitted by the emission module is transmitted to the first biometric feature part, and is reflected and transmitted to the detection module. The emission module and the detection module detect the structure of the first biometric feature part through the emitted and reflected light and perform the first biometric feature recognition; In the second biometric feature recognition mode, the emitted light of the emission module is transmitted to the second biometric feature part and reflected and transmitted to the detection module. The emission module and the detection module detect the second biometric feature part structure and perform second biometric feature recognition through the emitted and reflected light.

9. An electronic device, characterized in that A dual biometric detection system comprising any one of claims 1-7.

Images