baber/WOPTO huggingface dataset:
Patent WO-2018214615-A1 (WO)
Inventor: LIN TIANWEI
IPC: A44C17/04
Filed: 2018-03-09
Abstract: 一种部件式自摆首饰装置、配件及其实现方法，装置设置包括一装配宝玉石（121）的子部（120），以及一本体（110），具有容纳子部（120）的空间（130）；本体（110）上设置有相对的两连接孔（111）；子部（120）上设置有用于适配连接孔（111）的两连接轴（122），其中，连接孔（111）采用吊环部件（151）形成，吊环部件（151）具有形成连接孔（111）的环孔部和与环孔部相连的安装柱部（152），安装柱部（152）用于插入本体（110）上的对应装配孔（116）。部件式自摆首饰装置、配件及其实现方法由于采用了在自摆首饰装置中将子部（120）设置在本体（110）的环孔部上，利用吊环部件（151）设置的安装柱部（152）与本体（110）上的装配孔（116）配合，可以降低装配难度和工艺要求，方便了加工和装配。
Patent WO-2019109538-A1 (WO)
Title: 一种分布式数据存储方法及装置
Inventor: GAO DUNQIAO
IPC: G06F3/06
Filed: 2018-03-15
Abstract: 一种分布式数据存储方法及装置，其中，该方法包括：在接收到对数据对象进行存储的存储指令时，调起预设的虚拟存储区（S102），然后接收数据对象被划分后的数据块，并将数据块存储至虚拟存储区中（S104）。当数据对象的全部数据块在虚拟存储区中存储后，获取存储在虚拟存储区中的各数据块的元信息（S106）。进而将获取的元信息进行整合得到数据对象的索引信息，并利用数据对象的索引信息替换虚拟存储区的索引信息，以完成数据对象的存储操作（S108）。由此，在对数据对象进行存储时，数据对象已经被划分为多个数据块，从而能够实现同时并行的接收各个数据块，并将接收到的各数据块存储至虚拟存储区中，有效地提高了数据对象的存储效率。
Patent WO-2018166524-A1 (WO)
Title: 人脸检测方法和系统、电子设备、程序和介质
Inventor: WU LIWEI
IPC: G06K9/00
Filed: 2018-03-16
Abstract: 本申请实施例公开了一种人脸检测方法和系统、电子设备、程序和介质，其中，人脸检测方法包括：利用第一神经网络对待检测视频进行活体检测；响应于活体检测通过，利用第二神经网络检测所述待检测视频中是否存在伪造信息，对所述待检测视频进行人脸防伪检测。本申请实施例在进行活体检测的同时，能够抵御伪造攻击。
Patent WO-2018171613-A1 (WO)
Title: 两级式开关电源
Inventor: MAO QIUXIANG
IPC: H02M1/32
Filed: 2018-03-21
Abstract: 一种两级式开关电源（10）包括输入整流模块（101）、第一控制模块（102）、第一转换模块（103）、第二控制模块（106）、第二转换模块（104）以及限压开关模块（105）。第一控制模块控制第一转换模块对整流滤波电压信号进行电压变换从而获取供电电压和母线电压；第一转换模块向第一控制模块输出供电电压，并向第二转换模块、限压开关模块以及第二控制模块输出母线电压；限压开关模块在母线电压到达预设电压时控制第二控制模块向第二转换模块输出电压信号，以控制第二转换模块对母线电压进行转换后向负载进行输出，从而避免了由于第一转换模块由于输出的电压低导致开关电源处于间歇式工作状态的问题，并且整体结构简单。
Patent WO-2019015356-A1 (WO)
Title: Method for rapidly preparing mica-supported carbon nitride photocatalytic material by means of microwaves
Inventor: LU CHUNHUA
IPC: B01J27/24
Filed: 2018-03-30
Abstract: Disclosed is a method for rapidly preparing a mica-supported carbon nitride photocatalytic material by means of microwaves, wherein the mica-supported carbon nitride photocatalytic material is prepared by coating the surface of a two-dimensional flaky mica as a support with a layer of microwave-absorbing material, i.e., stannic oxide, and subjecting same to a microwave method with an amino compound as a material for the synthesis of a graphite-like carbon nitride. Stannic oxide has a very good microwave-absorbing property. By mixing same with the amino compound and by means of the microwave effect heating from outside in, the depth of the microwave action is expanded, the efficiency and uniformity of the microwave synthesis of the mica-supported carbon nitride are improved, the preparation time is reduced, the usage amount of the external microwave medium is greatly reduced, and resources are saved.
Patent WO-2018192362-A1 (WO)
Title: 镜子灯
Inventor: GUO MEI
IPC: F21V23/00
Filed: 2018-04-02
Abstract: 一种镜子灯(100)，包括：后盖(10)；镜子(20)，设置于后盖上并包括镜面区(21)和透光区(22)；光源模组(30)，设置于后盖上并位于透光区以下；电源模组(40)，设置于后盖上并与光源模组电性连接，以对光源模组供电；控制模组(50)，设置于后盖上并与电源模组电性连接，以调整电源模组传输至光源模组的电力。通过控制模组来调整电源模组供给光源模组的电力，实现对光源模组进行调光调色，使得镜子灯的照明效果多变，更能达到用户要求。
Patent WO-2019153536-A1 (WO)
Inventor: WANG BO
IPC: F04D29/66
Filed: 2018-04-27
Abstract: 一种轴流风轮及空调器，轴流风轮包括轮毂(100)及多个风叶(200)，多个风叶（200）间隔设于轮毂（100）上，风叶(200)具有呈前后向设置的前叶缘(2a)和后叶缘(2b)，以及连接前叶缘(2a)外端和后叶缘(2b)外端的顶叶缘(2c)。顶叶缘(2c)设有自风叶(200)的压力面(220)向风叶(200)的吸力面(210)倾斜的切面(230)，且切面(230)自前叶缘(2a)延伸至后叶缘(2b)，切面(230)具有位于内外两侧的内切边(231)和外切边(232)，内切边(231)向内外呈凹凸状设置。该轴流风轮能够减小沿轴流风轮的风叶叶顶位置所产生的泄涡流，以减小涡流降低噪音。
Patent WO-2018210205-A1 (WO)
Title: Porteuse virtuelle et agrégation de connexion virtuelle
Inventor: GONG ZHENGWEI
IPC: H04W76/15
Filed: 2018-05-14
Abstract: Selon la présente invention, l'agrégation de porteuses et la double connectivité tirent parti des multiples porteuses composantes afin d'augmenter la largeur de bande efficace disponible pour un UE donné. Des modes de réalisation de la présente invention étendent le concept d'agrégation de porteuses et de double connectivité au moyen d'une porteuse composante physique et d'au moins une porteuse composante virtuelle parmi un groupe de porteuses composantes physiques et/ou d'un groupe de porteuses composantes virtuelles, qui présentent la même fréquence porteuse et la même largeur de bande porteuse que la porteuse composante physique, afin de transmettre des flux de données à un équipement utilisateur. Des flux de données communiqués sur la porteuse composante physique et ladite porteuse composante virtuelle peuvent être orthogonaux dans le domaine temporel ou dans le domaine de code. En variante, des flux de données communiqués sur la porteuse composante physique et sur ladite porteuse composante virtuelle peuvent être non orthogonaux, auquel cas l'UE peut avoir à décoder les flux de données respectifs à l'aide de techniques de traitement de signal non orthogonal.
Patent WO-2018214836-A1 (WO)
Inventor: LUO JIEHU
IPC: A63F13/79
Filed: 2018-05-21
Abstract: 一种应用标识匹配方法及其设备、存储介质、服务器，其中方法包括如下步骤：接收用户终端发送的携带有目标应用标识的业务匹配请求，获取目标应用标识所属业务级别，并将目标应用标识置于所述业务级别对应的目标数据集合中(S101)；当目标数据集合中第一应用标识的标识数量未达到预设数量阈值时，获取目标数据集合的相邻数据集合，并在相邻数据集合中获取目标数量的第二应用标识(S102)，所述目标数量为所述预设数量阈值与所述标识数量的差值；向用户终端返回包含第一应用标识和第二应用标识的业务匹配结果(S103)。采用本方法，可以提高资源分配的合理性。
Patent WO-2019001242-A1 (WO)
Title: Flyback switching power supply circuit
Inventor: WANG ZHISHEN
IPC: H02M3/335
Filed: 2018-06-08
Abstract: A flyback switching power supply circuit is provided. On the basis of an LCL flyback converter, a dotted end of NP1 of a transformer B is maintained in connection with a power supply, a dotted end of a second primary winding NP2 is grounded, NP1 and NP2 are bifilarly wound, one end of a capacitor C1 is connected to the an undotted end of NP1, the other end is connected to an undotted end of NP2, and the dotted end of NP2 is connected to the power supply through a capacitor C3. The above configuration achieves: when Q1 is saturated and turned on, NP1 and NP2 both excite magnetic fields; when Q1 is turned off, a secondary side NS outputs energy, a primary side is connected to the voltage supply and a leakage inductance in series, and C3 resonates with the leakage inductance to enable Q1 to achieve zero voltage turn-on; or after D2 is turned off, zero voltage turn-on of Q1 is achieved via reverse excitation. The invention achieves energy recovery of a demagnetization circuit with a duty ratio greater than 0.5, and conversion efficiency is improved especially with light loads.
Patent WO-2019169810-A1 (WO)
Inventor: ZHENG CHUNHUA
IPC: A47C7/62
Filed: 2018-06-28
Abstract: An adjusting device, comprising a lifting module (1), a driving mechanism (2) and an adjusting seat (3); the lifting module (1) includes a first lifting member (11) connected to the driving mechanism (2), and a second lifting member (12) capable of sliding along the first lifting member (11); one end of the first lifting member (11) away from the driving mechanism (2) is hinged with the adjusting seat (3); and one end of the second lifting member (12) away from the driving mechanism (2) is connected with the adjusting seat (3) in a transmission way. The adjusting device further comprises a position-limiting member (8) for limiting an upward motion stroke of the second lifting member (12). The described adjusting device uses a structure of a lifting module (1) composed of a first lifting member (11) and a second lifting member (12) and a driving mechanism (2). When the driving mechanism (2) drives the first lifting member (11) to rise to a certain height, the second lifting member (12) and a position-limiting member abut each other; when the first lifting member (11) is continuously driven to rise, the adjusting seat (3) can be driven to turn over around the first lifting member (11), so that the turn-over motion of the adjusting seat (3) can be automatically controlled. The operation is convenient and the user experience is good.
Patent WO-2019205277-A1 (WO)
Title: Sponge-based variable-stiffness natural orifice surgery instrument support structure and use method therefor
Inventor: WANG SHUXIN
IPC: A61B17/00
Filed: 2018-06-29
Abstract: A sponge-based variable-stiffness natural orifice surgery instrument support structure (1), used for supporting a surgery instrument (2) and comprising: a variable-stiffness sponge pipeline (10), connected to the surgery instrument (2) and used for supporting the surgery instrument (2) in the natural orifice; a hydrophobic breathable film (20), attached to the outer wall of the variable-stiffness sponge pipeline (10) and used for isolating the variable-stiffness sponge pipeline (10) from the fluids of a natural human orifice; and a gas delivery device (30, 40), connected to the variable-stiffness sponge pipeline (10) and used for injecting high pressure air or water vapor into a variable-stiffness sponge tube of the variable-stiffness sponge pipeline (10). The stiffness of the variable-stiffness sponge pipeline (10) is inversely proportional to the content of the water vapor.
Patent WO-2019200739-A1 (WO)
Inventor: WANG YIWEN
IPC: G06Q20/38
Filed: 2018-07-12
Abstract: 本申请揭示了数据欺诈识别方法、装置、计算机设备和存储介质，其中方法包括：在区块链上获取与指定企业相关的数据；将获取的数据进行特征提取，以得到多个特征数据；在所述多个特征数据中提取出与其它特征数据不相关的特征数据作为不相关特征数据；通过Voronoi算法对所述不相关特征数据进行异常值识别，得出欺诈数据。
Patent WO-2019080565-A1 (WO)
Title: Phase decoding method, phase decoding receiving device and quantum key distribution system
Inventor: XU HUAXING
IPC: H04L9/08
Filed: 2018-07-27
Abstract: Provided by the present invention are a phase decoding method, a receiving device and a quantum key distribution system, the method comprising: beam splitting an input optical pulse by means of polarization into a first transmission optical pulse and a second transmission optical pulse; phase decoding each of the first transmission optical pulse and the second transmission optical pulse, then outputting the same by means of two associated sub-optical paths; directly outputting an output optical pulse from one of the two sub-optical paths which are associated with the first transmission optical pulse for detection, and directly outputting an output optical pulse from one of the two sub-optical paths associated with the second transmission optical pulse for detection. The present invention may effectively reduce the influence of random changes in the polarization state of an optical pulse on the stability of the system and achieve the stable phase decoding of environmental interference resistance. In addition, the present invention enables an unequal-arm Mach-Zendell interferometer to be used, and an optical pulse need only pass through a phase modulator once during decoding, reducing the insertion loss of a receiving end, and increasing the efficiency of the system.
Patent WO-2019047655-A1 (WO)
Title: Method and apparatus for use in determining driving behavior of driverless vehicle
Inventor: YU HAO
IPC: G06K9/00
Filed: 2018-08-07
Abstract: Disclosed in an embodiment of the present application are a method and apparatus for use in determining the driving behavior of a driverless vehicle. A specific manner of implementing the method comprises: acquiring an original high-definition image that is captured by an image sensor; scaling the original high-definition image so as to obtain a thumbnail for which the resolution is lower than that of the original high-definition image; determining a region of interest within the thumbnail on the basis of an attention model; determining a corresponding area of the region of interest in the original high-definition image; inputting the thumbnail and the corresponding area into an end-to-end model so as to obtain the driving behavior of a driverless vehicle that is outputted by the end-to-end model. The manner of implementation increases the accuracy of the driving behavior of a driverless vehicle that is outputted by an end-to-end model.
Patent WO-2019227725-A1 (WO)
Title: Earphone using process of sealing fitting between leather sheath and loudspeaker covering with soft rubber ring
Inventor: YUEN SHUN MING
IPC: H04R5/033
Filed: 2018-08-28
Abstract: The utility model belongs to the technical field of earphones and discloses an earphone using a process of sealing the fitting between a leather sheath and a loudspeaker covering with a soft rubber ring. The earphone comprises a leather sheath support, wherein a soft rubber ring is provided between the leather sheath support and a loudspeaker covering, and the leather sheath support is connected to the loudspeaker covering by means of a position-inverted fastening; and a loudspeaker is fixed at an upper portion of the loudspeaker covering. According to the utility model, by means of providing the soft rubber ring between the leather sheath support and the loudspeaker covering and by means of providing a design of a position-inverted fastening between the leather sheath support and the loudspeaker covering, when the earphone is assembled, it is only needed to press and fasten the leather sheath in the direction of the loudspeaker covering so as to clamp the soft rubber ring, so that the soft rubber ring is deformed to seal the fitting between the leather sheath support and the loudspeaker covering, and thus sound from the loudspeaker of the earphone will not leak out from a side face. By using the method, the sealing effect stays stable and unchanged for a long time with no risk of air leakage, the operation is simple, the production and assembly time is saved on, reworking and repair are facilitated, and there is no scrapped material.
Patent WO-2020037713-A1 (WO)
Title: Audio output structure for dual-moving coil earplug-type earphone
Inventor: YUEN CHEE KIT
IPC: H04R1/10
Filed: 2018-09-05
Abstract: Disclosed is an audio output structure for a dual-moving coil earplug-type earphone, comprising a cover sheet, a rear speaker housing, a moving-coil speaker A, a speaker support, a moving-coil speaker B, a front speaker housing, and an audio partial opening. Two ends of the rear speaker housing are respectively fixed to the cover sheet and the front speaker housing; the speaker support is mounted in the front speaker housing; the audio partial opening is mounted on the front speaker housing; the moving-coil speaker A and the moving-coil speaker B are fixed to the speaker support, and the moving-coil speaker B is located close to the audio partial opening; an arc-shaped audio output channel A and a circular audio output channel B which are eccentric to the circle center of the audio partial opening are provided in the audio partial opening. The center of the audio output channel B and the center of the moving-coil speaker B are in a straight line. In the present utility model, the provision of two audio output channels in the audio partial opening effectively partitions, at the position of a front cavity, audios generated by the moving-coil speaker A and the moving-coil speaker B, so that the interference between the audios is reduced; in addition, the high-frequency moving-coil speaker B is placed at a position close to the human ear, so that the loss of high frequency before output to ears is reduced.
Patent WO-2020015225-A1 (WO)
Title: High-temperature, high-performance capacitor thin film continuous production device and method
Inventor: LI QI
IPC: H01G4/20
Filed: 2018-10-26
Abstract: Disclosed are a high-temperature, high-performance capacitor thin film continuous production device and method. A thin film (3) to be processed is released by an unwinding roller (1), the position of the thin film to be processed is adjusted by an unwinding adjustment roller (2), such that the thin film is guaranteed to be located at the middle position of a discharge gap (12), and the thin film to be processed then passes through a plasma deposition area, the position of the processed thin film (7) is adjusted by a winding adjustment roller (4), and the processed thin film, after adjustment, is wound by a winding roller (6) after being drawn by a drawing roller (5), with the winding roller being an inflatable roller. The steady and controllable movement of the thin film in the deposition area is achieved. Large-scale continuous production, capable of matching the existing production speed of a polymer capacitor thin film, can be achieved using the device, wherein same has the advantages of flexible configuration, low environmental requirements, strong universality, a fast processing speed, low production costs and no pollution.
Patent WO-2019223238-A1 (WO)
Title: Cooking appliance control method and device, storage medium, and cooking appliance
Inventor: MEI JIANG
IPC: A47J27/00
Filed: 2018-10-29
Abstract: A cooking appliance control method and device, a storage medium, and a cooking appliance. Said control method comprises: determining that a cooking appliance enters a first specified cooking stage; heating an R corner of the cooking appliance at a first predetermined duty cycle for a first time length; and heating the bottom of the cooking appliance at the first predetermined duty cycle for a second time length, and maintaining the temperature of the bottom within a first predetermined temperature range, the first time length being greater than the second time length. Therefore, the present invention solves the technical problem of poor quality of food products cooked by a cooking appliance.
Patent WO-2019210659-A1 (WO)
Title: Silicon carbide detector and preparation method therefor
Inventor: ZHOU XINGYE
IPC: H01L31/18
Filed: 2018-10-29
Abstract: The invention is applicable to the technical field of semiconductors, and provides a silicon carbide detector and a preparation method therefor, the silicon carbide detector comprises: a wafer, the wafer sequentially comprises, from bottom to top, a substrate, a silicon carbide P+ layer, an N-type silicon carbide insertion layer, an N+ type silicon carbide multiplication layer, an N-type silicon carbide absorption layer and a silicon carbide N+ layer; the doping concentration of the N-type silicon carbide insertion layer gradually increases from bottom to top, and the doping concentration of the N-type silicon carbide absorption layer gradually decreases from bottom to top; a mesa is etched on the wafer, and the mesa is etched to an upper surface of the silicon carbide P+ layer; an N-type electrode is arranged on an upper surface of the mesa, and a P-type electrode is arranged on an upper surface of a non-mesa region. In the invention, the dark current of the device can be reduced, the signal-to-noise ratio of the device can thus be improved and relatively high quantum efficiency is ensured.
Patent WO-2020042428-A1 (WO)
Inventor: DENG HONGBIN
IPC: G06T19/20
Filed: 2018-12-11
Abstract: An apparatus display processing method and device, a storage medium, and a processor. The apparatus display processing method comprises: an application acquiring identification information regarding a predetermined apparatus (S102); the application acquiring a 3D model of the predetermined apparatus corresponding to the identification information, the 3D model being able to be operated by a user, and the 3D model being used to display the composition of the predetermined apparatus (S104); and the application displaying the 3D model (S106).
Patent WO-2020118565-A1 (WO)
Inventor: HIROYUKI SATO
IPC: G06T15/04
Filed: 2018-12-12
Abstract: La présente invention concerne un procédé de génération d'un modèle 3D qui comprend : la reconstruction d'une forme 3D d'un objet sur la base d'une pluralité de vues capturées à partir d'une pluralité de positions différentes, chacune de la pluralité de vues capturées comprenant une image de profondeur et une image de visualisation ; la sélection d'une pluralité de vues clefs parmi la pluralité de vues capturées, sur la base d'une distance entre la forme 3D reconstruite et une coordonnée 3D obtenue en utilisant l'image de profondeur ; et la mise en correspondance d'une texture sur la forme 3D reconstruite en utilisant l'image de visualisation dans chacune de la pluralité d'images clefs.
Patent WO-2019134505-A1 (WO)
Inventor: CHEN YAN
IPC: G06T3/00
Filed: 2018-12-18
Abstract: A method for blurring an image, a storage medium, and an electronic apparatus. The method comprises: acquiring a preset image captured by a dual camera unit (101); performing calculation to obtain depths of field of respective pixels in the preset image, and obtaining a foreground image from the preset image according to the depths of field of the respective pixels (102); detecting a contour edge of a target image in the foreground image (103); setting a region outside the contour edge of the target image to be a region to undergo blurring (104); and blurring the region (105).
Patent WO-2019128853-A1 (WO)
Title: 一种仿c60分子结构的减振防护结构
Inventor: LIU JINGUO
IPC: F16F3/10
Filed: 2018-12-21
Abstract: 一种仿C60分子结构的减振防护结构，球壳(3)的外部均匀分布六十个四孔弹性球(1)，每个弹性球(1)的一个孔(9)通过弹簧套筒(4)与球壳(3)连接，另外三个孔(9)通过连接杆(2)与相邻的三个弹性球(1)相连；弹簧套筒(4)包括活塞(5)、套筒(6)、减振弹簧(7)及限位螺栓(8)，限位螺栓(8)的一端与球壳(3)螺纹连接，另一端与套筒(6)的一端螺纹连接，套筒(6)的另一端通过活塞(5)与弹性球(1)上开设的孔(9)相连，套筒(6)内有减振弹簧(7)，减振弹簧(7)的两端分别与限位螺栓(8)及活塞(5)抵接，通过减振弹簧的压缩/复位实现减振防护。该结构能对球形机器人、精密元件等提供全方位减振防护。
Patent WO-2020133186-A1 (WO)
Inventor: CHEN MANTANG
IPC: G06F16/35
Filed: 2018-12-28
Abstract: 一种文档信息提取方法、存储介质及终端。该方法包括：获取文档的文本信息和文本位置信息，文本信息对应文本位置信息（S1）；使用训练语素分类模板从文本信息中提取关键词（S2）；设置关键词对应的超链接（S3）。存储关键词、关键词对应的超链接、关键词对应的文本位置信息、关键词所在文档的文档属性信息、以及关键词分类。该方法能够从垂直领域的资料文档的信息源中提取出专业术语关键词、产品关键词、品类关键词、属性关键词，使文档信息查找更定准确，提高搜索匹配度，提高用户搜索体验。
Patent WO-2019242288-A1 (WO)
Title: Mises à jour sécurisées de micrologiciel pour véhicules à distance
Inventor: SU AO-JAN
IPC: B60W50/08
Filed: 2018-12-29
Abstract: L'invention concerne des systèmes et des procédés de mise à jour sécurisée de micrologiciel sur des véhicules à distance. Le système reçoit une demande de mise à jour du micrologiciel de véhicule de la part d'un véhicule et identifie une adresse de chaîne de blocs pour le véhicule. Le système génère un identifiant de session et identifie un fichier de mise à jour de micrologiciel. Le système génère une signature numérique sur la base d'une combinaison de l'identifiant de session et d'une première valeur de hachage du fichier de mise à jour de micrologiciel. Le système fournit, pour le stockage dans un bloc à l'adresse de la chaîne de blocs, la signature numérique. Le système transmet l'identifiant de session au véhicule. Le système transfère le fichier de mise à jour de micrologiciel au véhicule. Le véhicule vérifie le fichier de mise à jour de micrologiciel à l'aide de la signature numérique extraite du bloc au niveau de l'adresse de chaîne de blocs, d'une seconde valeur de hachage du fichier de mise à jour de micrologiciel reçue à partir du système de traitement de données, et de l'identifiant de session reçu du système de traitement de données.
Patent WO-2019134704-A1 (WO)
Inventor: LI HE
IPC: H04L9/08
Filed: 2019-01-07
Abstract: Embodiments of the present application relate to the technical field of communications, and provide a key updating method, capable of solving the problem that an update of an NAS key involved in a process when an AMF node performs re-authentication on a terminal by using one type of access technology may affect normal communication between the terminal and the AMF node using another type of access technology. A communication system comprises a terminal and a core network device, and the terminal accesses the core network device simultaneously using first access technology and second access technology, the method comprises: the core network device performs re-authentication on the terminal by means of a first connection corresponding to the first access technology; and if a trigger condition is satisfied, the core network device updates a key of a second connection corresponding to the second access technology.