baber/WOPTO huggingface dataset:
Patent WO-2020114320-A1 (WO)
Title: Point cloud clustering method, image processing device and apparatus having storage function
Inventor: ZHANG ZHISHENG
IPC: G06K9/62
Filed: 2019-11-28
Abstract: Provided are a point cloud clustering method, an image processing device and an apparatus having storage function, the method comprises: obtaining first point cloud data (S11), sampling the first point cloud data to obtain second point cloud data (S12), clustering the sampled second point cloud data to obtain at least one category of sub-point clouds (S13), judging whether the number of categories of the sub-point clouds is greater than one (S14), and if yes, dividing data points in the first point cloud data into the corresponding sub-point clouds by taking the at least one category of sub-point clouds as reference data, to obtain clustered point cloud data (S16). This method uses sampling to reduce the data amount that needs to be clustered, which can reduce the calculation amount and speed up the clustering speed.
Patent WO-2020151444-A1 (WO)
Inventor: CAI WENJIAN
IPC: A61P9/12
Filed: 2019-12-24
Abstract: Provided are a clevidipine butyrate fat emulsion injection and a preparation process therefor. The prescription of the clevidipine butyrate fat emulsion injection comprises: clevidipine butyrate, an oil for injection, an organic solvent, an emulsifying agent, an emulsion auxiliary agent, an isoosmotic adjusting agent, a stablilzer, a pH adjusting agent, and water for injection. The prescription and the process can improve the solubility and the encapsulation rate of clevidipine butyrate, reduce the risk of the demulsification and the layering of fat emulsion caused by the change of a storage temperature, and reduce the degradation of clevidipine butyrate during drug storage so as to finally obtain a product having better stability and higher safety.
Patent WO-2021056888-A1 (WO)
Inventor: YANG BOWEN
IPC: G06F16/535
Filed: 2019-12-24
Abstract: 一种通过结构化信息前过滤布控库提升性能的检索方法和系统，所述系统包括：检索数据库(1)，至少一个结构特征识别模块(2a, 2b)，独有特征识别模块(3)，前过滤模块(4)，检索模块(5)。检索数据库(1)中包括多个数据，各数据包括独有特征和结构特征。检索请求信息(6)分别输入到结构特征识别模块(2a, 2b)和独有特征识别模块(3)。结构特征识别模块(2a, 2b)抽取检索请求信息(6)中的结构化信息。独有特征识别模块(3)抽取检索请求信息(6)中的独有信息。前过滤模块(4)根据结构化信息对检索数据库(1)进行前过滤并形成中间数据库(8)。检索模块(5)根据独有信息对中间数据库(8)进行检索形成检索结果(9)。所述系统能降低减少耗时和误报率。
Patent WO-2020151497-A1 (WO)
Inventor: WU XING
IPC: H02K15/02
Filed: 2020-01-09
Abstract: Disclosed is a stator core molding method. The method comprises the following steps: processing an iron core inner ring portion (2) of the stator core, a first chamfer (202) being provided at the notch of an iron core inner ring groove (201) on the iron core inner ring portion (2); processing an iron core main body portion (1) of the stator core, the iron core main body portion (1) being sleeved outside the iron core inner ring portion (2); and processing an iron core outer ring portion (3) of the stator core, the iron core outer ring portion (3) being sleeved outside the iron core main body portion (1) and a second chamfer (302) being provided at the notch of an iron core outer ring groove (301) on the iron core outer ring portion (3). According to the method, an iron core inner ring portion (2), an iron core main body portion (1) and an iron core outer ring portion (3) are successively processed; an iron core outer ring groove (301), an iron core inner ring groove (201) and an iron core main body groove (101) together form a stator groove; a first chamfer (202) is provided at the notch of the iron core inner ring groove (201) and a second chamfer (302) is provided at the notch of the iron core outer ring groove (301), with no need to keep away from the sharp corner there. The coil does not need long ends at the notch of the iron core inner ring groove (201) and the iron core outer ring groove (301), thereby increasing the inner bore for assembly and improving the use ratio of copper wires.
Patent WO-2021146986-A1 (WO)
Title: Downlink control information (dci) transmission in multiple listen-before-talk (lbt) bandwidths
Inventor: XU CHANGLONG
IPC: H04W72/04
Filed: 2020-01-22
Abstract: Wireless communications systems and methods related to wireless communications in a system are provided. A first wireless communication device may communicate with a second wireless communication device in a listen-before-talk (LBT) bandwidth of a set of LBT bandwidths, downlink control information (DCI). The DCI may indicate acquisition of a channel occupancy time (COT) in a fixed frame period (FFP) across the set of LBT bandwidths and/or a starting point of the FFP in the respective LBT bandwidth. The first wireless communication device may communicate with the second wireless communication device, a communication in at least one LBT bandwidth of the set of LBT bandwidths during the respective COT.
Patent WO-2020156486-A1 (WO)
Title: 光学传感器组装体
Inventor: MIN BYUNG
IPC: G01D5/26
Filed: 2020-01-23
Abstract: 本发明涉及一种光学传感器组装体。根据本发明的一个侧面的实施例提供光学传感器组装体。光学传感器组装体中，多个光纤，在此，所述多个光纤的一端配置为一列，而所述多个光纤的另一端按照两个以上的列层叠，从而由所述多个光纤的所述一端所形成的第一面的宽度大于由所述多个光纤的所述另一端所形成的第二面的宽度，且包括与所述第二面光学结合的传感器连接器，所述第一面接收向电子装置的内部入射的光，所述第一面所接收的光通过所述第二面向所述传感器连接器传递，所述传感器连接器能够与所述第一面分离，且配置于所述电子装置内部。
Patent WO-2020164450-A1 (WO)
Title: Procédé et dispositif de présentation d'informations de ressources de sauvetage
Inventor: LU LE
IPC: H04L29/06
Filed: 2020-02-10
Abstract: La présente invention vise à fournir un procédé de présentation d'informations de ressources de sauvetage. Le procédé comprend les étapes suivantes : un dispositif de commande envoie une demande d'informations de ressources à un dispositif de réseau correspondant ; le dispositif de réseau reçoit la demande d'informations de ressources, envoyée par le dispositif de commandement, concernant des informations de ressources de sauvetage d'un site de sauvetage, et envoie les informations de ressources de sauvetage au dispositif de commandement, sur la base de la demande d'informations de ressources ; et le dispositif de commandement reçoit les informations de ressources de sauvetage, et présente les informations de ressources de sauvetage sur la base d'informations cartographiques d'une région correspondant au site de sauvetage. Selon la présente invention, les informations de ressources de sauvetage peuvent être fournies en temps opportun à un personnel de commandement d'arrière-plan pour une prise de décision, ce qui améliore la communication entre la première ligne et la ligne arrière pendant une opération de sauvetage, et augmente l'efficacité de sauvetage d'une équipe.
Patent WO-2020168957-A1 (WO)
Inventor: YAN WEI
IPC: H04L29/12
Filed: 2020-02-12
Abstract: Selon des modes de réalisation, la présente invention concerne un procédé d'ordonnancement d'un nœud de périphérie d'un réseau de distribution de contenu et un appareil. Le procédé comprend les étapes suivantes : un serveur mandataire d'ordonnancement reçoit d'un appareil terminal un premier message de demande comprenant une première adresse IP, l'adresse IP étant une adresse IP de l'appareil terminal ; déterminer, selon la première adresse IP et des informations de configuration, un centre d'ordonnancement de CDN cible correspondant à la première adresse IP ; si le centre d'ordonnancement de CDN cible prend en charge la configuration d'ordonnancement de mandataire, envoyer à celui-ci un deuxième message de demande comprenant la première adresse IP et utilisé par le centre d'ordonnancement de CDN cible pour déterminer une deuxième adresse IP selon la première adresse IP, la deuxième adresse IP étant une adresse IP d'un nœud de périphérie de CDN cible correspondant à la première adresse IP ; recevoir la deuxième adresse IP envoyée par le centre d'ordonnancement de CDN cible ; et envoyer à l'appareil terminal un message de réponse de demande transportant la deuxième adresse IP, qui est utilisé par l'appareil terminal pour acquérir du contenu de distribution auprès du nœud de périphérie de CDN cible selon la deuxième adresse IP. L'invention améliore le taux de réussite de l'acquisition de contenu.
Patent WO-2021036211-A1 (WO)
Inventor: ZHONG HAIZHENG
IPC: G02F1/13357
Filed: 2020-02-25
Abstract: 本申请公开了一种量子点膜的封装方法以及封装量子点膜。该封装方法包括将阻隔膜通过热压的方式封装在量子点膜的两侧，即可得到封装量子点膜；其中，所述量子点膜为含有量子点和聚合物的复合膜。该方法实现了无粘合剂封装，提高了量子点/聚合物复合薄膜的发光稳定性的同时降低了生产成本。
Patent WO-2021174509-A1 (WO)
Inventor: SHAO SHUAI
IPC: G06K7/10
Filed: 2020-03-05
Abstract: A radio frequency card reader (500) and a radio frequency identification method. The radio frequency card reader (500) comprises a base (200) and a movable body (100), wherein the movable body (100) comprises a radio frequency card reader chip (120) and an antenna switching component (110), the radio frequency card reader chip (120) has at least one first antenna interface, the base (200) comprises an antenna matching network component (210) and at least one second antenna interface, and the antenna matching network component (210) is coupled with the at least one second antenna interface. The working mode of the radio frequency card reader can be flexibly switched by means of coordination of the base (200) and the movable body (100) according to requirements.
Patent WO-2020238465-A1 (WO)
Inventor: WANG XULIANG
IPC: G09F9/33
Filed: 2020-04-17
Abstract: L'invention concerne une structure de pixels, un écran d'affichage et un dispositif d'affichage. La structure de pixels comprend une pluralité de premiers groupes de sous-pixels. Le premier groupe de sous-pixels comprend un premier sous-pixel et au moins un second sous-pixel. Le premier sous-pixel est disposé autour dudit au moins un second sous-pixel. La couleur de la lumière émise par le premier sous-pixel est différente de la couleur de la lumière émise par n'importe quel second sous-pixel.
Patent WO-2020211873-A1 (WO)
Inventor: YUAN PU
IPC: H04W64/00
Filed: 2020-04-20
Abstract: The present application discloses a method and a device for sending and receiving a DMRS, relating to the field of communication technology. The method for sending a DMRS comprises: a first terminal generating a DMRS sequence according to first information, the first information being used to represent whether the first terminal is within the coverage range of a base station or within the coverage range of a GNSS, or whether the first terminal is within the coverage range of the base station and within the coverage range of the GNSS; modulating the DMRS sequence, to obtain a DMRS; and sending the DMRS to a second terminal. The technical solution of the present application can be applied to a 5G NR-V2X communication system (i. e. Internet of Vehicles), and V2X can comprise scenarios such as V2V, V2P and V2I. The technical solution of the present application helps a receiving-side terminal to quickly identify the priority of a synchronization signal sent by a sending-side terminal, quickly implementing synchronization, thereby improving the autonomous driving or ADAS capability of an electric vehicle.
Patent WO-2021174655-A1 (WO)
Inventor: LIU HAIWEI
IPC: G06F9/455
Filed: 2020-04-27
Abstract: A method and apparatus for determining a trusted state of a virtual data center, a device, and a computer-readable storage medium. The method for determining the trusted state is based on a trusted management and control component of a computing pool, and comprises: by means of a basic input and output system, acquiring an operating feature value of a host to be tested in a virtual data center when resources are started; acquiring a reference value corresponding to the host, wherein the reference value has the same data type as the operating feature value; and comparing the operating feature value to the reference value, and determining the trusted state of the host according to the comparison result. It may be seen that in the present application, by means of comparing the operating feature value of a server/virtual host of the virtual data center to the reference value, the trusted state of the server/virtual host may be determined, thereby ensuring the security of physical resources and virtual resources of the virtual data center.
Patent WO-2020228764-A1 (WO)
Inventor: ZHANG KAI
IPC: H04N19/186
Filed: 2020-05-14
Abstract: L'invention concerne des dispositifs, des systèmes et des procédés de codage vidéo numérique, le procédé comprenant la réalisation d'une conversion entre un bloc vidéo actuel d'une vidéo et une représentation codée de la vidéo, le bloc vidéo actuel comprenant une composante de luminance et au moins une composante de chrominance ; la composante de luminance est convertie d'un domaine d'origine à un domaine refaçonné avec un mappage de luminance avec un schéma de mise à l'échelle chromatique (LMCS), et des échantillons de chrominance de la ou des composantes de chrominance sont prédits sur la base d'échantillons de luminance reconstruits de la composante de luminance dans le domaine d'origine.
Patent WO-2021128718-A1 (WO)
Title: 一种兼容tsn并引入fc协议的车载以太网络架构
Inventor: WANG JINGYUAN
IPC: B60R16/023
Filed: 2020-05-20
Abstract: 本申请披露了一种兼容TSN并引入FC协议的车载以太网络架构，包括：第一中央控制单元和第二中央控制单元，第一中央控制单元和第二中央控制单元间通过FC协议通信；第一中央控制单元连接第一域控制单元和第二域控制单元，第一域控制单元和第二域控制单元间通过TSN协议通信；第二中央控制单元连接第三域控制单元和第四域控制单元，第三域控制单元和第四域控制单元间通过TSN协议通信；所述第一域控制单元和第三域控制单元间通过TSN协议通信；所述第二域控制单元和第四域控制单元间通过TSN协议通信。
Patent WO-2020233646-A1 (WO)
Title: 一种含有微胶囊的除草组合物及其制备方法和用途
Inventor: LUO CHANGYAN
IPC: A01N25/04
Filed: 2020-05-21
Abstract: 本发明提供一种含有微胶囊的除草组合物，所述除草组合物包含微胶囊封的噁草酮及可选的非囊封的第二除草活性物。在种植作物之前或者作物出苗前施用该除草组合物，可同时给予商业上可接受的杂草控制和商业上可接受的作物损伤。
Patent WO-2021223272-A1 (WO)
Title: Medical protective mask
Inventor: QIN XUJUN
IPC: A41D31/24
Filed: 2020-05-22
Abstract: A medical protective mask, comprising a mask body and adjustable fixing bands (1) penetrating out of the two sides of the mask body. The mask body comprises an upper sheet (2), a body (3), and a lower sheet (4) which are sequentially connected and are all narrow on the two sides and wide in the middle; an upper edge of the interior of the upper sheet (2) is provided with a nose bridge strip (5); the adjustable fixing bands (1) are provided on the upper edge of the interior of the upper sheet (2) in a tight fitting and penetrating manner, penetrate out to the outer side of the upper sheet (2) from the position ranges, which do not exceed two ends of the nose bridge strip (5) in the length direction, of the upper sheet (2), and penetrate through a positioning belt buckle (21) provided in the middle of the outer side of the upper sheet (2) and corresponding to the nose bridge strip (5) in position. The filtering structure and the mounting structure are more reasonable, the mask body fits the face contour, and reasonable stress included angles are formed between the mask body and the adjustable fixing bands (1) in the up-down direction, so that the sealing of the mask body is protected, the size of a dead space is small enough, the gas exchange area during breathing is enlarged, and the mask is safe and comfortable to use.
Patent WO-2021227134-A1 (WO)
Title: Absorptive defect single-beam photothermal measurement device and measurement method
Inventor: LIU SHIJIE
IPC: G01N21/95
Filed: 2020-05-28
Abstract: An absorptive defect single-beam photothermal measurement device and measurement method. The device comprises common-optical-path and non-common-optical-path structures. According to the present invention, the optical path structure is simple and it is convenient to install and debug. The measurement result is stable, and a measurement signal anomaly caused by environmental vibration and sample inclination is avoided. By detecting power change of a light beam at the edge of a light spot, system measurement sensitivity is significantly improved.
Patent WO-2021012794-A1 (WO)
Title: 基于云服务的区块链构建方法、装置、介质及电子设备
Inventor: HUAN PENGFEI
IPC: H04L9/08
Filed: 2020-05-30
Abstract: 本申请提供了一种基于云服务的区块链构建方法、基于云服务的区块链构建装置、计算机可读介质及电子设备，可在区块链中实现。该方法包括：根据配置信息生成区块并创建多个区块链节点；根据区块从云服务器中调用目标服务并通过目标服务构建区块链通道；调用区块链节点中的目标节点启动部署于区块链通道的智能合约；将智能合约同步至多个区块链节点中。本申请中的基于云服务的区块链构建方法能够一定程度上克服用户学习成本较高以及区块链技术的推广难度较高的问题，进而降低用户的学习成本和区块链技术的推广难度。
Patent WO-2020244470-A1 (WO)
Title: Head-mountable display device and display method thereof
Inventor: MAO CHUNJING
IPC: G09G3/20
Filed: 2020-05-30
Abstract: Provided are a head-mountable display device (7) and display method; when the head-mountable display device (7) starts a low-power display mode, a left eye display system (72) and a right eye display system (73) alternately display images. The switching time interval between the left eye display system (72) and the right eye display system (73) alternately displaying images can be determined according to the current display mode; different current display modes may correspond to different switching time intervals, and may also correspond to the same switching time interval. Therefore, in the low-power display mode of the head-mountable display device (7), since only one display system displays images at the same time, the power consumption of the head-mountable display device (7) is reduced.
Patent WO-2021139092-A1 (WO)
Title: Ligand compound, and functionalized metal-organic framework compound prepared by same, preparation method therefor and application thereof
Inventor: PAN MEI
IPC: G01N21/64
Filed: 2020-06-12
Abstract: Disclosed are a ligand compound, and a functionalized metal-organic framework compound prepared by same, a preparation method therefor and an application thereof. The structure of the ligand compound is as shown in Formula (I); the ligand compound is used as a ligand to form a functionalized metal-organic framework compound with cadmium chloride by means of self-assembly; the functionalized metal-organic framework compound (LIFM-ZCY-1) has a higher fluorescence quantum yield and a long room-temperature phosphorescence lifetime, and has the advantages of high emission intensity and stable luminous performance; and under vacuum conditions, luminescence is still continued for a long time after an excitation light source is turned off. The LIFM-ZCY-1 does not contain mercury, and is non-toxic, non-volatile, easy to recycle, and environmentally friendly; the composite can be used for anti-counterfeiting by means of room-temperature phosphorescent characteristics and exhibits optical properties negatively correlated with oxygen content, can be prepared into a light-emitting device, an anti-counterfeiting material and/or an oxygen sensor for application, and thus has wide application value.
Patent WO-2020253654-A1 (WO)
Inventor: LUO CHENGYUAN
IPC: H01L51/52
Filed: 2020-06-15
Abstract: Disclosed are an OLED display substrate (1), a display panel and a manufacturing method therefor, and a display apparatus, relating to the technical field of display. The OLED display panel comprises: a display substrate (1) having a display area (a), and a non-display area (b) surrounding the display area (a); a retaining wall (2) located in the non-display area (b) and surrounding the display area (a); a residual layer (3) located between the retaining wall (2) and the display area (a); and an encapsulation structure (5) covering multiple light emitting structures (4) and connected to the residual layer (3) and the display substrate (1).
Patent WO-2021253389-A1 (WO)
Inventor: Du dongyang
IPC: H04L1/00
Filed: 2020-06-19
Abstract: 本申请提供的信号处理方法、设备及计算机可读存储介质，根据与传输接收点对应的扰码序列对待发送给终端设备的信号进行加扰，得到加扰信号，将所述加扰信号发送给所述终端设备。通过这种方式，当网络设备向终端设备发送加扰信号时，终端设备可以根据已连接的传输接收点的扰码序列对加扰信号进行解扰，进而识别出发送该加扰信号的传输接收点，从而能够响应该信号。这种方式简单易行，能够使终端设备有效识别与接收的信号对应的发送源。
Patent WO-2021012859-A1 (WO)
Inventor: ZHANG SHIBING
IPC: H04B17/382
Filed: 2020-06-23
Abstract: The present invention relates to a spectrum sensing method based on symmetric peaks of a cyclic autocorrelation function of a modulation signal. A cognitive user performs cyclic autocorrelation function calculation on a received signal to accordingly form a two-dimensional signal detection domain, and finally searches for symmetric peak points in the signal detection domain to determine whether there is a main user signal, and if there are symmetric peak points in the two-dimensional signal detection domain, the cognitive user determines that there is a main user signal, otherwise, determines that there is no main user signal. In order to ensure the false alarm probability of spectrum sensing, in the present invention, a symmetric peak point significance level factor is introduced into a process of searching for the symmetric peak points. According to the method of the present invention, whether there is a main user signal is determined according to the symmetry of peaks of a cyclic autocorrelation function of a modulation signal, and no prior knowledge of any main user signal and channel is required, thereby eliminating the impact of channel noise fluctuation on the performance of spectrum sensing, and solving the problem of signal spectrum sensing in an environment with a small signal-to-noise ratio and channel noise fluctuation.
Patent WO-2022000368-A1 (WO)
Inventor: YANG LUANXIA
IPC: H04W76/15
Filed: 2020-07-01
Abstract: A method for wireless communication performed by a wireless device includes aggregating a number of component carriers (CCs) to generate a virtual CC. The method also includes allocating data channel resources in the virtual CC based on a virtual bandwidth part (BWP) and allocating control channel resources in the virtual CC based on the virtual BWP. The method further includes communicating on a data channel based on the allocated data channel resources and communicating on a control channel based on the allocated control channel resources.
Patent WO-2021008437-A1 (WO)
Title: 信息的指示方法及设备
Inventor: WU DAN
IPC: H04W16/18
Filed: 2020-07-09
Abstract: 本公开实施例提供一种信息的指示方法及设备，该方法包括：发送第一信号和/或信道，所述第一信号和/或信道指示以下至少一项：第一集合内的SS/PBCH准共址；第二集合内的SS/PBCH准共址；第三集合内的SS/PBCH准共址。
Patent WO-2022000533-A1 (WO)
Title: 多腔管以及内窥镜组件
Inventor: FAN JINCHENG
IPC: A61B1/018
Filed: 2020-07-10
Abstract: 多腔管以及内窥镜组件，其中，多腔管包括：一多腔管管体（10），多腔管管体（10）具有沿轴向形成的近端（10A）和远端（10B）；以及一充气球囊（11），设置于多腔管管体（10）的远端（10A），多腔管管体（10）的内部沿轴向被分隔为互不连通的配合内窥镜的第一内部管道（101）、连通充气球囊（11）的第二内部管道（102）以及别限定液体不同流向的第三内部管道（1030）、第四内部管道（104）。该多腔管以及内窥镜组件能够在一次插入的情况下实现多种功能，节省手术时间，减少病人出血，同时降低了手术的难度，提高了手术的质量。
Patent WO-2022011676-A1 (WO)
Inventor: ZHANG YI
IPC: H01L31/049
Filed: 2020-07-17
Abstract: 本发明公开了太阳能电池背板。太阳能电池背板，依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定；所述耐候层包括以下按重量份数计的组分：丙烯酸树脂、聚氨酯丙烯酸酯、异氰酸酯、纳米二氧化钛、乙二醇、高岭土、纳米银、玻璃纤维、氧化镁、氮化硅、乙酸乙酯、氯丁胶、含羧基端聚酰亚胺、铝-锆酸酯偶联剂、植物提取物、去离子；所述结构增强层由氧化锌、氧化镁、联苯型聚酰亚胺、甘油混合制备。与现有技术相比，本发明太阳能光伏电池的耐候层采用无氟材料制成，提升了耐候层的耐磨，耐酸碱，耐拉伸等特性，且氯丁橡胶的粘粘作用，减少了胶粘剂的使用，使用植物提取物为还原剂，减少了化学品的添加。
Patent WO-2022016495-A1 (WO)
Title: Cell (re)selection and sidelink relay (re)selection procedures
Inventor: CHENG PENG
IPC: H04W40/22
Filed: 2020-07-24
Abstract: Disclosed are techniques for wireless communication. In an aspect, a remote user equipment (UE) initiates a cell selection procedure, initiates, in response to failure of the cell selection procedure, a relay selection procedure, and establishes, in response to discovering a relay UE during the relay selection procedure that is available to provide one or more UE-to-network relay services to the remote UE, a sidelink with the relay UE. In another aspect, a remote UE establishes a first sidelink with a first relay UE to obtain one or more UE-to-network relay services from the first relay UE, performs a relay discovery procedure to determine whether at least one second relay UE is available for relay reselection, and initiates, based on the at least one second relay UE being available for relay reselection, a relay reselection procedure.
Patent WO-2021052016-A1 (WO)
Inventor: LI LINGYAN
IPC: G06F3/01
Filed: 2020-07-28
Abstract: 本申请实施例提供一种人体姿态检测方法及电子设备，该方法应用于电子设备，该方法用以提供一种准确地识别用户的不良使用姿态，以便于及时地提醒用户健康使用电子设备，提升用户体验。该方法包括：在电子设备处于亮屏状态下，电子设备获取传感器数据和前置摄像头采集的图像信息；然后根据传感器数据确定设备姿态，以及根据图像信息确定用户人脸相对于电子设备的相对姿态；最终根据用户人脸相对于电子设备的相对姿态和设备姿态，确定用户的头部姿态。