Huawei publicly uses lip function to unlock equipment patents. In the future, people may be able to read a string of words or numbers into their mobile phones to unlock them. Not just lip motion recognition. In recent years, a variety of biometric methods have emerged. With lip motion recognition, you can unlock the device by reading a string of numbers.
Huawei has disclosed the patent 1 for unlocking the device by lip movement features. On June 29, an eye examination showed that Huawei disclosed a patent to unlock the device through lip movement features. According to the patent abstract, this is a device unlocking method and device, which can use the biological attribute of lip movement for identity authentication, thus unlocking the device.
In the future, people may be able to read a string of words or numbers into their mobile phones to unlock them. Looking up the patent specification, it is found that the lip unlocking method is actually a combination of biometric identification and password identification, which solves the "unchangeable" problem of pure biometric identification such as face.
Not only lip recognition, but also various biometric methods have emerged in recent years. Voiceprint recognition, gait recognition, palm recognition and even anal fingerprint recognition, but whether these recognition methods can solve the disadvantages of traditional recognition methods such as face recognition remains to be verified.
Using lip motion recognition, it can be unlocked by reading a string of numbers from the device.
It was found that Huawei published the patent specification in official website, China National Intellectual Property Administration, and introduced the technical principle and working mode of lip unlocking.
Lip unlocking, as the name implies, is to use the action characteristics of human lips to unlock, which belongs to the biometric unlocking method of fingerprint and face recognition. The general way of lip movement recognition is that a person reads a string of words or numbers into the device, with or without sound. The camera will capture the human lip movement characteristics (called "the first lip movement characteristics") and compare them with the pre-stored lip movement characteristics (called "the second lip movement characteristics"). If the matching degree reaches a certain level, the unlocking is successful.
Lip unlocking principle
At present, there are two common ways to unlock smart phones on the market: password identification and biometric identification. Password identification is easy to be seen and forgotten by others; Biometrics is mainly based on fingerprints and faces. Fingerprint identification is greatly affected by the wet, dry, cold and hot fingers, so it is not convenient to wear gloves. However, face recognition is mostly characterized by static faces, which can be cracked by photos, and the security is not high.
Obviously, Huawei's patent for lip unlocking takes into account the disadvantages of traditional unlocking methods, indicating that the patent is "flexible, forgetful, plagiarism-proof and modifiable".
Looking at these four characteristics separately, it is not difficult to see that the most special feature of this lip patent is "modifiability". Flexibility and forgetfulness are biological characteristics. Anti-plagiarism solves the problem that face recognition can be cracked by photos, and modifiability solves all the pain points of biometrics.
In fact, biometrics can be realized by using the uniqueness of biological characteristics, that is, everyone's biological characteristics are unique. And this uniqueness determines the immutability of biological characteristics. For example, if the digital password of the mobile phone is leaked, the user can modify the password to ensure security; If the face information is leaked, it cannot be modified. This means that once the biometric is revealed, the risk may be permanent.
It's also biometrics. Why is lip unlocking "modifiable"? The reporter found that although it is clear in the patent abstract that this is an "identity authentication using biological attributes", it can be seen from the specification that this is actually an unlocking method combining biology and password.
Why is it modifiable? Combination of biometric identification and password identification
Because the unlocking process requires people to read a string of characters or numbers, in fact, unlocking includes two parts, one is the characteristics of people's lips and the other is the read content. The former is biometric and the latter is password, so the unlocking method can be modified.
Specifically, in the combination of biology and password, the unlocking principle can be divided into two types-lip feature priority and password feature priority.
For example, the preset stored lip movement feature is "People read four numbers:111,with or without voice". In the lip motion feature priority mode, the system will compare the current and previously stored lip motion features. If the matching degree is greater than 80%, the unlocking is successful, and if the matching degree is less than 50%, the unlocking fails. If the matching degree is between 50% and 80%, verify whether the password is correct, that is, whether the four numbers "111"have been read. If it is correct, the unlocking is successful; If there is an error, the unlocking fails.
The workflow of lip feature priority mode
In password priority mode, the system will compare passwords first. If the password is in the white list, it will be unlocked directly; if the password is in the blacklist, it will be unlocked. If the password is neither in the white list nor the black list, lip recognition will be used at this time. If the lip matching degree is greater than 80%, unlocking is successful, otherwise unlocking fails.
Workflow of password function priority mode
The instructions point out that because everyone's lip movement characteristics are special, they are related to the lip characteristics and are not affected by the specific lip movement. When the password spoken by the user is inconsistent with the pre-stored password, the device can still be unlocked.
Huawei disclosed a patent to unlock the device by lip movement function. Recently, Huawei disclosed a patent to unlock devices through the feature of moving lips. With the widespread use of mobile phones and technological progress, from simple password unlocking to various biometric methods, such as fingerprint recognition, voice recognition, gait recognition and even anal pattern recognition, unlocking methods have their own advantages and disadvantages. Unlocking the feature of the moving lip solves the problem that the pure biometric method cannot be changed.
Huawei published the patent specification of the lip-lock device in China National Intellectual Property Administration, official website, and introduced the technical principle and working mode of lip-lock device, such as matching degree of lip-lock feature authentication, black-and-white list of password authentication, etc. The specification also claims that the patent has "flexibility, forgetfulness prevention, plagiarism prevention and modifiability", which correspondingly solves the shortcomings of password unlocking and pure biometric unlocking.
The patent description repeatedly mentioned in the news contains almost all the information you want to know about this patent. So, what is the patent description?
Patent specification is a kind of patent literature, which refers to the official document or its publication containing title page, patent claim, specification and other components, describing the content of invention and creation and limiting the scope of patent protection. Among them, the claim is the part of the patent document that limits the scope of patent protection. There is at least one independent claim in the claims, and there may also be dependent claims. The specification is a document part that clearly and completely describes the technical content of invention and creation, and the attached drawings are used to supplement the text part of the specification. The description shall include the technical field, background technology, contents of the invention or utility model, attached drawings and specific implementation methods.
Patent specification is the main body of patent literature. On the one hand, it reveals new technical information; On the other hand, it determines the scope of legal protection. Legally speaking, the scope of protection of the patent right for invention or utility model is subject to the content of the claim demanded by the obligee, that is, the explanation of the claim when applying for a patent. The specification and drawings can be used to interpret the claims, that is, supplementary claims. In other words, only in the patent specification can we find all the technical information of the patent application and the accurate legal information of the patent protection scope. This is why you need to find the patent specification to inquire about the specific information of a patent.
Compared with the previous password unlocking and biometric unlocking, Huawei's lip unlocking patent combines the two, which solves the forgetfulness of password unlocking and the immutability of pure biometric unlocking. However, it still has the disadvantage that it is awkward and inconvenient to read the password in front of everyone, especially when it is still impossible to relax and fight the epidemic. But these are not enough to resist the expectation of lip unlocking, and more practical patents are expected to come out.