CN109214236B - Image sensor chip and terminal equipment of double-layer embedded biological recognition algorithm - Google Patents
Image sensor chip and terminal equipment of double-layer embedded biological recognition algorithm Download PDFInfo
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- 239000002355 dual-layer Substances 0.000 claims description 10
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
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Abstract
The invention provides an image sensor chip and a terminal device of a double-layer embedded biological recognition algorithm, wherein the image sensor chip comprises: the first dielectric layer and the second dielectric layer; the first dielectric layer is provided with a pixel module and a circuit module; the second medium layer is provided with a biological identification module; the pixel module is used for realizing image acquisition and converting an acquired optical signal into an electric signal; the circuit module comprises an analog circuit part and a digital circuit part, wherein the analog circuit part is used for converting an electric signal into a digital signal, and the digital circuit part is used for carrying out format processing on the converted digital signal so as to output a digital signal with a preset format requirement; the biological recognition module is at least provided with a biological recognition block, and the biological recognition block carries out biological feature recognition according to a built-in biological recognition algorithm. The image sensor chip provided by the invention can realize biological image acquisition and biological identification functions at the same time, so that the image sensor chip has stronger function and higher safety.
Description
Technical Field
The invention relates to the technical field of integrated circuits and biological recognition, in particular to an image sensor chip and terminal equipment of a double-layer embedded biological recognition algorithm.
Background
A big feature of the rapid development of informatization is digitization and recession of personal identity, how to accurately identify the identity of a person, and protecting information security is a critical social problem which must be solved in the informatization age at present. With the rise of the Internet and intelligent terminals, people have increasingly strengthened consciousness about security, and the intelligent terminals not only start up automatic starting items and some system authorities, but also need user management in aspects of unlocking, file system authorities, privacy confidentiality, security payment and the like, so that a series of security measures are derived.
The biological characteristic identity authentication technology is a research hotspot in the field of identity authentication of intelligent terminals. The biological characteristic recognition technology is an identity authentication technology by utilizing inherent physiological characteristics (such as a human face, fingerprints, irises, veins, retina and the like) of a human body or an identity authentication technology by utilizing behavior characteristics (such as a signature, handwriting, sound, gait and the like) formed by the acquired, and compared with the traditional identity authentication means, the identity authentication technology based on the biological characteristic recognition has more incomparable advantages, including no forgetting or losing, good anti-counterfeiting performance, difficult counterfeiting or theft, portability, availability at any time and any place and the like; in particular, the iris recognition has more obvious advantages, and is becoming the brightest functional point in intelligent terminals increasingly.
Although iris recognition has begun to enter intelligent terminals, two difficult problems to be solved in iris recognition are: firstly, the iris image is obtained, secondly, the iris recognition is realized, which is also the biggest bottleneck restricting the development of the biological recognition technology, and particularly the iris recognition technology.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the image sensor chip and the terminal equipment of the double-layer embedded type biological recognition algorithm.
Specifically, the invention provides the following technical scheme:
In a first aspect, the present invention provides an image sensor chip of a dual-layer embedded biometric algorithm, comprising: the first dielectric layer and the second dielectric layer; the first dielectric layer is provided with a pixel module and a circuit module, the circuit module is paved on the periphery of the pixel module, and the circuit module is electrically connected with the pixel module; the second medium layer is provided with a biological identification module, and the biological identification module on the second medium layer is electrically connected with the pixel module and the circuit module on the first medium layer;
the pixel module is used for realizing image acquisition and converting an acquired optical signal into an electric signal;
The circuit module comprises an analog circuit part and a digital circuit part, wherein the analog circuit part is used for converting the electric signal into a digital signal, and the digital circuit part is used for carrying out format processing on the converted digital signal so as to output a digital signal with a preset format requirement;
The biological recognition module is at least provided with a biological recognition block, a preset biological recognition algorithm is arranged in the biological recognition block, and the biological recognition block is used for carrying out corresponding biological feature recognition on the digital signal output by the circuit module according to the preset biological recognition algorithm arranged in the biological recognition block.
Further, the first dielectric layer and the second dielectric layer are oppositely arranged.
Further, a security encryption block is further arranged in the biological recognition module, and the security encryption block is used for performing security encryption protection on the biological recognition module.
Further, the secure encryption block comprises one or more of a password function area, an identity number function area and a preset specified reservation algorithm function area.
Further, a security encryption algorithm is arranged in the security encryption block, and the security encryption block is used for realizing security encryption protection on the biological recognition module according to the built-in security encryption algorithm.
Further, the biological recognition block at least comprises an image processing unit, a biological recognition unit and a recognition result judging unit.
Further, the biological recognition module is further provided with a memory unit, and the memory unit is used for providing a storage space for the biological recognition block and the secure encryption block.
Further, the memory unit is provided with an external interface, the external interface is used for being connected with external equipment, the external equipment is used for using the memory unit, and the external equipment comprises module equipment and/or terminal equipment.
Further, the memory unit is used for providing one or more of Flash memory storage space, EEPROM electrically erasable programmable read-only memory space and SRAM static random access memory space.
Further, a plurality of I/O interfaces are arranged on the periphery of the circuit module, and the circuit module is electrically connected with the outside through the I/O interfaces.
Further, the preset biometric algorithm built in the biometric block includes: one or more of iris recognition algorithm, retina recognition algorithm, eye print recognition algorithm, face recognition algorithm, and vein recognition algorithm.
Further, the preset biometric algorithm built in the biometric block comprises a complete, partial, mixed biometric software code, algorithm or program.
Further, the pixel module includes one or more of RGB, RGBW, RGBIR, RBGI, RWB and BW.
Further, the application scenario of the image sensor chip includes one or more of biometric identification, monitoring security, and financial payment.
Further, the burning place of the preset biological recognition algorithm comprises one or more of a chip factory, a sealing factory and a terminal factory.
Further, the burning place of the secure encryption algorithm comprises one or more of a chip factory, a sealing factory and a terminal factory.
In a second aspect, the invention also provides a terminal device comprising an image sensor chip of a two-layer embedded biometric algorithm as described in any one of the preceding claims.
Further, the terminal equipment is one or more of a desktop computer, a tablet computer, a mobile phone, a smart home, a television, a game console and an AR/VR/MR device.
According to the technical scheme, the image sensor chip of the double-layer embedded type biological recognition algorithm provided by the invention is characterized in that the pixel module and the circuit module are packaged on the first medium layer, the biological recognition module is packaged on the second medium layer, and the image sensor chip has biological image acquisition and biological recognition functions at the same time through the packaging of the on-chip system, so that the function of the image sensor chip is more powerful, the safety is more improved, more convenience is provided for the information safety processing, and the double protection of the chip-level software and hardware can be realized, so that the safety level is very high, the common development of the biological recognition technology and the information technology is promoted, and safer information service is provided for society and people. In addition, the image sensor chip of the one-stop embedded type biological recognition algorithm can enhance the convenience of the intelligent terminal, reduce the research and development time of the intelligent terminal and reduce the research and development cost, and provide a high-performance-ratio biological recognition solution for terminal manufacturers. Furthermore, the image sensor chip provided by the invention has the characteristics of high integration level, low power consumption, high speed, low cost and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 to fig. 3 are schematic structural diagrams of an image sensor chip of a dual-layer embedded biometric algorithm according to an embodiment of the present invention;
In the above figures, 200 represents an image sensor chip of a double-layer embedded biometric algorithm; 210 represents a first dielectric layer; 220 denotes a second dielectric layer; 211 denotes a pixel block; 212 denotes a circuit module; 212a denotes an I/O interface; 221 denotes a biometric block; 222 represents a memory cell; 223 denotes a designated reservation algorithm function region; 224 denotes an identity number function region; 221a represents a preset biometric algorithm.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 to 3 are schematic structural diagrams of an image sensor chip of a dual-layer embedded biometric algorithm according to an embodiment of the present invention. Referring to fig. 1 to 3, an image sensor chip 200 of a dual-layer embedded biometric algorithm provided in an embodiment of the present invention includes: a first dielectric layer 210 and a second dielectric layer 220;
The first dielectric layer 210 is provided with a pixel module 211 and a circuit module 212, the circuit module 212 is laid on the periphery of the pixel module 211, and the circuit module 212 is electrically connected with the pixel module 211; the second dielectric layer 220 is provided with a biological identification module, and the biological identification module on the second dielectric layer 220 is electrically connected with the pixel module 211 and the circuit module 212 on the first dielectric layer 210;
It is understood that the first dielectric layer and the second dielectric layer may be silicon-based layers;
The pixel module 211 is configured to collect an image and convert the collected optical signal into an electrical signal;
The circuit module 212 includes an analog circuit portion for converting the electrical signal obtained by the pixel module 211 into a digital signal, and a digital circuit portion for performing format processing on the digital signal converted by the analog circuit portion to output a digital signal required by a preset format; for example, the digital circuit part formats the converted digital signal so that the converted digital signal is output in the MIPI protocol format; in addition, the digital circuit part can also control the working process of the pixel module 211 and perform other signal processing work, such as one-time programming of the image sensor chip 200 of the double-layer embedded biological recognition algorithm; it can be understood that, according to the need, the circuit module can be further provided with a circuit unit such as an amplifier, a high-speed AD converter, a logic controller and the like; wherein, the processing procedure of the circuit module is the prior art and is not described in detail herein;
The biometric module is at least provided with a biometric block 221, a preset biometric algorithm 221a is provided in the biometric block 221, and the biometric block 221 is configured to perform corresponding biometric recognition on the digital signal output by the circuit module 212 according to the preset biometric algorithm built in the biometric block 221.
It can be appreciated that, in this embodiment, the biometric module is separately disposed in the second medium layer 220, so that the biometric module can be conveniently subjected to functions expansion and other processes, and meanwhile, the biometric module can be conveniently subjected to replacement and other processes.
For space saving, preferably, referring to fig. 1, the first dielectric layer 210 and the second dielectric layer 220 are disposed opposite to each other. Referring to fig. 1, the image sensor chip 200 of the dual-layer embedded biometric algorithm provided in the embodiment of the present invention encapsulates the complete pixel module 211, the circuit module 212 and the biometric module through the first dielectric layer 210 and the second dielectric layer 220, so as to implement interconnection between chip systems, and the whole chip can implement biometric image acquisition and biometric feature recognition at the same time.
It can be appreciated that the image sensor chip 200 of the dual-layer embedded biometric algorithm provided in this embodiment may be connected to an external terminal device (such as a mobile phone), so as to transmit the biometric result to the external terminal device. Therefore, the image sensor chip provided by the embodiment can simplify the structure of the external terminal equipment (the external terminal equipment does not need to have a biological recognition function), and meanwhile, the internal space of the external terminal equipment can be saved. Therefore, the embodiment of the invention enhances the convenience of the terminal equipment, reduces the research and development time of the terminal equipment, reduces the research and development cost of the terminal equipment and provides a high-performance-ratio biological recognition solution for terminal manufacturers by providing the image sensor chip of the one-stop embedded biological recognition algorithm.
It can be understood that the image sensor chip 200 of the dual-layer embedded biometric algorithm provided in this embodiment may be a cmos image sensor chip, but may be other image sensor chips (such as a CCD image sensor chip), which is not limited in this regard. When the image sensor chip is a cmos image sensor chip, the image sensor chip may be a cmos image sensor chip with modes of RGB, RGBW, RGBIR, RBGI, RWB, BW and the like, so as to collect images of color, black and white, mixing and the like.
It can be understood that the preset biometric algorithm 221a built in the biometric block 221 in this embodiment includes: one or more of iris recognition algorithm, retina recognition algorithm, eye pattern recognition algorithm, face recognition algorithm and vein recognition algorithm, and of course, other biological recognition algorithms (such as face stature pattern recognition algorithm) are also possible, which is not limited in the present invention. Since the preset biometric algorithms are built in the biometric module, the image sensor chip 200 of the double-layer embedded biometric algorithm provided in this embodiment can perform multiple kinds of biometric identification such as iris identification, retina identification, eye pattern identification, face identification, vein identification, etc., and since these biometric algorithms and the identification processing procedure performed by using these biometric algorithms are the prior art, the present embodiment will not be repeated.
It is understood that the burning location of the preset biometric algorithm includes one or more of a chip factory, a packaging factory and a terminal factory. For example, the preset biometric algorithm may be recorded in a chip factory, a terminal factory, or a sealing factory.
It is to be understood that the preset biometric algorithm built in the biometric block 221 may be a complete, partial or mixed biometric software code, algorithm or program, which is not limited in the present invention.
It is understood that the biometric block 221 includes at least an image processing unit, a biometric unit, and a recognition result determining unit. The image processing unit is configured to perform image processing operations, such as image preprocessing, feature extraction, and the like, on the image collected by the pixel module, and this part of image processing process belongs to the prior art, so that details will not be described herein. The biological recognition unit is used for carrying out biological feature recognition on the result obtained by processing the image processing unit according to a preset biological recognition algorithm built in the biological recognition unit. The recognition result judging unit is used for outputting a biological characteristic recognition result.
It will be appreciated that the biometric block 221 may be further preset with related hardware data and other existing image processing algorithms according to actual needs.
As can be seen from the above description, the image sensor chip of the dual-layer embedded biometric algorithm provided by the embodiment of the invention encapsulates the pixel module and the circuit module on the first medium layer, encapsulates the biometric module on the second medium layer, and enables the image sensor chip to have the functions of biometric image acquisition and biometric identification at the same time through the encapsulation of the on-chip system, so that the function of the image sensor chip is more powerful, the security is more improved, more convenience is provided for the information security processing, and the dual protection of the software and hardware at the chip level can even realize one machine and one code, so that the security level is very high, thereby promoting the common development of the biometric identification technology and the information technology, and providing safer information services for society and people. In addition, the embodiment of the invention can enhance the convenience of the intelligent terminal, reduce the research and development time of the intelligent terminal and reduce the research and development cost by providing the image sensor chip of the one-stop embedded type biological recognition algorithm, and provide a high-performance-ratio biological recognition solution for terminal manufacturers. Furthermore, the image sensor chip provided by the embodiment of the invention has the characteristics of high integration level, low power consumption, high speed, low cost and the like.
It can be understood that the application scenario of the image sensor chip provided by the embodiment of the invention includes one or more of biological recognition, monitoring security and financial payment. For example, the image sensor chip provided by the embodiment of the invention can be applied to the field of financial payment.
In an alternative embodiment, a secure encryption block is further provided in the biometric module, and the secure encryption block is used for performing secure encryption protection on the biometric module. Referring to fig. 2 and 3, the secure encryption block includes one or more of a password function area (not shown), an identification number function area 224, and a preset designated reservation algorithm function area 223.
It can be understood that the secure encryption block can be further provided with a secure encryption algorithm, and the secure encryption block is used for realizing secure encryption protection on the biological recognition module according to the built-in secure encryption algorithm. Here, the secure encryption algorithm may be an encryption algorithm of AES, DES, 3DES, SHA1, SHA256, SM1, SM2, or the like. For example, the secure encryption block may further include other functional areas such as an advanced encryption standard AES functional area (not shown) and a triple data encryption standard 3DES functional area (not shown). It will be appreciated that the advanced encryption standard AES function area and the triple data encryption standard 3DES function area may provide further encryption functions for the password function area and the identity number function area.
It will be appreciated that the location of the burning of the secure encryption algorithm includes one or more of a chip factory, a packaging factory, and a terminal factory. For example, the secure encryption algorithm may be burned in a chip factory, a terminal factory, or a sealing factory.
In an alternative embodiment, a memory unit 222 is further provided in the biometric module, and the memory unit 222 is configured to provide a storage space for the biometric block and the secure encryption block.
For example, the memory unit 222 is respectively connected to one or more of the biometric block 221, the preset-specification-reservation-algorithm functional area 223, the identification-number functional area 224, the password functional area, the advanced-encryption-standard AES functional area, and the triple-data-encryption-standard 3DES functional area, and is configured to provide a storage space for one or more of the biometric block 221, the preset-specification-reservation-algorithm functional area 223, the identification-number functional area 224, the password functional area, the advanced-encryption-standard AES functional area, and the triple-data-encryption-standard 3DES functional area.
In an alternative embodiment, the memory unit 222 is further provided with an external interface (not shown in fig. 1-3), which is used for connecting to an external device, where the external device uses the memory unit 222, and the external device includes a module device and/or a terminal device. I.e. the module equipment produced by the external module factory and the terminal equipment produced by the terminal factory, can also use the memory unit 222.
In an alternative embodiment, the memory unit 222 is configured to provide one or more of Flash memory storage, EEPROM and SRAM. Of course, the memory unit 222 may also provide other types of storage space according to needs, which is not limited in this disclosure.
In an alternative embodiment, referring to fig. 2 and 3, the edge portion of the first dielectric layer 210 is provided with a plurality of I/O interfaces 212a, and the pixel module 211 and the circuit module 212 are electrically connected to the outside through the I/O interfaces 212 a.
Another embodiment of the present invention also provides a terminal device including the image sensor chip of the dual-layer embedded biometric algorithm as described in the above embodiment.
The terminal device in this embodiment includes the image sensor chip of the double-layer embedded biometric algorithm in the embodiment, so that the terminal device in this embodiment can implement biometric identification (such as iris identification, retina identification, eye pattern identification, face identification, vein identification, etc.) without a built-in biometric processing module, thereby enhancing convenience of the intelligent terminal, reducing development time and development cost of the intelligent terminal, providing a biometric identification solution with high-performance ratio for terminal manufacturers, and in addition, being beneficial to miniaturization of the terminal device, reducing product production thresholds of some terminal device manufacturers without biometric technology, and being beneficial to industrialization and marketization of the terminal device.
It can be appreciated that the terminal device described in this embodiment may be one or more of a desktop computer, a tablet computer, a mobile phone, a smart home, a television, a game console, and an AR/VR/MR device.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (15)
1. An image sensor chip of a double-layer embedded biometric algorithm, comprising: the first dielectric layer and the second dielectric layer; the first dielectric layer is provided with a pixel module and a circuit module, the circuit module is paved on the periphery of the pixel module, and the circuit module is electrically connected with the pixel module; the second medium layer is provided with a biological identification module, and the biological identification module on the second medium layer is electrically connected with the pixel module and the circuit module on the first medium layer;
the pixel module is used for realizing image acquisition and converting an acquired optical signal into an electric signal;
The circuit module comprises an analog circuit part and a digital circuit part, wherein the analog circuit part is used for converting the electric signal into a digital signal, and the digital circuit part is used for carrying out format processing on the converted digital signal so as to output a digital signal with a preset format requirement;
the biological recognition module is at least provided with a biological recognition block, a preset biological recognition algorithm is arranged in the biological recognition block, and the biological recognition block is used for carrying out corresponding biological feature recognition on the digital signal output by the circuit module according to the preset biological recognition algorithm arranged in the biological recognition block;
The biological recognition module is also provided with a safe encryption block which is used for carrying out safe encryption protection on the biological recognition module;
the secure encryption block comprises one or more functional areas of a password functional area, an identity number functional area and a preset specified reservation algorithm functional area;
The security encryption block is provided with a security encryption algorithm, and is used for realizing security encryption protection on the biological identification module according to the built-in security encryption algorithm.
2. The image sensor chip of claim 1, wherein the first dielectric layer and the second dielectric layer are disposed opposite each other.
3. The image sensor chip according to claim 1, wherein the biometric block includes at least an image processing unit, a biometric unit, and a recognition result determination unit.
4. The image sensor chip of claim 1, wherein the biometric module is further provided with a memory unit for providing storage space for the biometric block and the secure encryption block.
5. The image sensor chip according to claim 4, wherein the memory unit is provided with an external interface for connecting with an external device for the external device to use the memory unit, the external device comprising a module device and/or a terminal device.
6. The image sensor chip of claim 4, wherein the memory unit is configured to provide one or more of Flash memory storage, EEPROM electrically erasable programmable read-only memory storage, and SRAM static random access memory storage.
7. The image sensor chip of claim 1, wherein a plurality of I/O interfaces are provided on a periphery of the circuit module, and the circuit module is electrically connected to the outside through the I/O interfaces.
8. The image sensor chip of claim 1, wherein the preset biometric algorithm built in the biometric block comprises: one or more of iris recognition algorithm, retina recognition algorithm, eye print recognition algorithm, face recognition algorithm, and vein recognition algorithm.
9. The image sensor chip of claim 1, wherein the pre-set biometric algorithm built into the biometric block comprises a complete, partial, hybrid biometric software code, algorithm, or program.
10. The image sensor chip of claim 1, wherein the pixel module comprises one or more of RGB, RGBW, RGBIR, RBGI, RWB and BW.
11. The image sensor chip of claim 1, wherein the application scenario of the image sensor chip includes one or more of biometric identification, monitoring security, and financial payment.
12. The image sensor chip of claim 1, wherein the burn-in location of the predetermined biometric algorithm comprises one or more of a chip factory, a packaging factory, and a terminal factory.
13. The image sensor chip of claim 1, wherein the burn-in site of the secure encryption algorithm comprises one or more of a chip factory, a packaging factory, and a terminal factory.
14. A terminal device, comprising: an image sensor chip of a dual-layer embedded biometric algorithm as in any one of claims 1-13.
15. The terminal device of claim 14, wherein the terminal device is one or more of a desktop computer, a tablet computer, a mobile handset, a smart home, a television, a gaming machine, and an AR/VR/MR device.
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