baber/WOPTO huggingface dataset:
Patent WO-2018077113-A1 (WO)
Title: 一种返航方向确定方法、装置、无人机及计算机可读存储介质
Inventor: LI SHENGYUAN
IPC: G05D1/00
Filed: 2017-10-19
Abstract: 一种返航方向确定方法和装置，返航方向确定方法包括：将第一天线和第二天线分别接收到的来自于返航点（P）的电磁波信号分别转换为第一电流信号和第二电流信号（步骤20）；计算第一电流信号和第二电流信号之间的滞后角和电流相位差（步骤40）；根据第一天线和第二天线之间的距离（d）、滞后角和电流相位差计算第一天线和第二天线之间的连线与无人机与返航点之间的连线所构成的夹角（θ）（步骤60）；根据夹角（θ），确定无人机的返航方向（步骤80），使无人机能够找回，以解决无人机的指南针受到干扰并且长时间未恢复正常时的情况下，无人机无法找回的问题。
Patent WO-2019051938-A1 (WO)
Title: Live video preservation method and device, and server, anchor terminal and medium
Inventor: XIONG CHAO
IPC: H04N21/24
Filed: 2017-10-26
Abstract: Disclosed are a live video preservation method, applied to a live platform server, the method comprising: acquiring and saving a live video played in a target live room; if a recording instruction sent by an anchor terminal is received at a first moment, acquiring, from the live video, a target video from a moment a pre-set duration before the first moment to the first moment, wherein the pre-set duration is a duration sent by the anchor terminal and stored in a live platform server; sending description information about the target video to a viewer terminal corresponding to the anchor terminal; receiving an on-demand instruction sent by the viewer terminal based on the description information; and on the basis of the on-demand instruction, sending the target video to the viewer terminal. The present invention solves the technical problem in the prior art that the live characteristic of live broadcasting causes viewers to easily miss a splendid moment, and thus the reproducibility thereof is poor, so that live broadcasting can also have the reproducibility of the splendid moment while having the live characteristic.
Patent WO-2019095363-A1 (WO)
Inventor: WANG JIANHUA
IPC: H05K3/32
Filed: 2017-11-20
Abstract: L'invention concerne un procédé d'impression tactile de surface. Le procédé comprend les étapes suivantes consistant à : fournir une tête de presse, une partie en saillie correspondant à une position devant être imprimée sur une surface à imprimer étant disposée sur la tête de presse ; ajuster un élément conducteur sensible à la pression capable de conduire de l'électricité sous pression, vers la tête de presse, et recouvrir la partie saillante ; ou ajuster l'élément conducteur sensible à la pression capable de conduire de l'électricité sous pression, sur une surface A à imprimer ; et permettre à la partie en saillie de la tête de presse de correspondre à la position devant être imprimée sur la surface à imprimer, et appliquer une pression pour permettre à une partie pressée de l'élément conducteur sensible à la pression d'adhérer à la position devant être imprimée sur la surface à imprimer, de telle sorte que la partie imprimée de l'élément conducteur sensible à la pression forme un circuit tactile. Dans le procédé d'impression tactile en surface de la présente invention, au moyen d'une manière d'ajustement par pression, l'élément conducteur sensible à la pression capable de conduire de l'électricité sous pression forme directement un circuit de détection tactile sur une surface interne du matériau d'un boîtier ou d'une plaque de recouvrement, de manière à mettre en œuvre une fonction tactile ; et par conséquent, la difficulté technique des bulles d'air générées lorsqu'une feuille fonctionnelle en caoutchouc est ajustée sur le boîtier ou la plaque de couverture et d'autres difficultés techniques sont résolues, ce qui simplifie une procédure de travail et réduit les coûts.
Patent WO-2018161638-A1 (WO)
Title: 胶塞直线洗刷机及其使用方式
Inventor: HUA GUOPING
IPC: A61J1/14
Filed: 2017-11-22
Abstract: 一种胶塞直线洗刷机及其使用方式，它包括机架(1)，所述机架(1)顶部设置有振动输送器(2)和清洗台板(3)，所述振动输送器(2)的出料口与清洗台板(3)的进料口相连接，振动输送器(2)将胶塞输送到清洗台板(3)的进料口上。直线洗刷机还设置有多个胶塞排列轨道(5)，并且胶塞一直从振动输送器(2)中送到胶塞排列轨道上(5)进行清洗，胶塞排列轨道(5)上方设置毛刷机构(11)，毛刷机构中(11)的毛刷可以由光控设备来控制上下升降，让毛刷刷洗好的胶塞自动落到下一个清洗区进行清洗，无需转运，清洗效率高。
Patent WO-2019061766-A1 (WO)
Title: Image processing method and device
Inventor: ZENG YUCHAO
IPC: G06T5/00
Filed: 2017-11-23
Abstract: Disclosed in the present invention is an image processing method and device. Said method comprises the following steps: counting the quantitative distribution of pixels in a target image at different brightness values; determining an initial center brightness value having the highest pixel quantity, and determining the average luminance value of the target image; and adjusting the quantitative distribution of the pixels in the target image at different luminance values, enabling the new center luminance value having the highest pixel quantity in the adjusted image to be closer to the average luminance value compared to the initial center luminance value, and expanding the pixel luminance value range including the preset luminance threshold of the new center luminance value. Disclosed in the present invention is an image processing method and device, which realizes image detail enhancement by expanding the display range of the center luminance area and adjusting image luminance distribution.
Patent WO-2019090889-A1 (WO)
Inventor: ZHOU SHOUBIN
IPC: C01B25/46
Filed: 2017-12-13
Abstract: Cette invention concerne un procédé de préparation d'un matériau de cathode au lithium/fer/phosphate, le matériau préparé comprenant, en poids, 20 à 40 parties d'hydroxyde de lithium, 30 à 70 parties de cellulose microcristalline, 30 à 40 parties d'eau, et 90 à 150 parties de phosphate de fer. Le matériau est préparé par les étapes de : réaction des matières premières, préparation de suspension, séchage et frittage. Au moyen du procédé décrit, le matériau de cathode au lithium/fer/phosphate est préparé.
Patent WO-2018113797-A1 (WO)
Inventor: LI HAN
IPC: H04W76/00
Filed: 2017-12-25
Abstract: A front-haul transport network and a data transmission method, the front-haul transport network comprising: an access type front-haul transport node (FTN-ACC), used for connecting to a remote radio unit (RRU); an aggregate type front-haul transport node (FTN-AGG), one end of which is connected to the FTN-ACC and the other end of which is connected to baseband processing units (BUUs); at least two transmission channels having different transmission delays are established between the FTN-ACC and the FTN-AGG, the FTN-ACC and/or the FTN-AGG being specifically used for selecting a corresponding transmission channel for carrying out transmission according to time delay requirements for data.
Patent WO-2019237216-A1 (WO)
Title: Low-notch microdynamic pedicle screw having buffering function
Inventor: HE WEIYI
IPC: A61B17/70
Filed: 2018-08-28
Abstract: A low-notch microdynamic pedicle screw having a buffering function, comprising a screw plug (5), a connecting bar (4), a screw seat (3), a spring (2), and a ball-head screw (1). The upward end of the ball-head screw (1), i.e., the head, is spherical; a plane (12) is provided at the top end; an annular recess (11) is provided on the plane; the spring (2) is disposed in the recess (11). The pedicle screw has low notch, multiple axial directions, and a buffering function.
Patent WO-2018145640-A1 (WO)
Title: 组变更方法及装置
Inventor: ZHANG HUIYING
IPC: H04W4/08
Filed: 2018-02-07
Abstract: 本申请公开了组变更方法及装置，用以实现多个终端组的快速变更，无需组成员逐个进行加入组和/或离开组的操作，减少信令开销，简化组变更过程，提高组变更效率。本申请提供的一种组变更方法，包括：第一终端组中的管理者终端，向第二终端组中的管理者终端发送用于指示将第二终端组与第一终端组进行合并或拆分的组变更消息；第一终端组中的管理者终端，接收第二终端组中的管理者终端发送的针对所述组变更消息的反馈消息。
Patent WO-2019144467-A1 (WO)
Inventor: CHEN ZHENXIA
IPC: G02F1/1335
Filed: 2018-03-05
Abstract: 一种偏光片，贴设在基板表面，偏光片包括：偏光层（101），其一侧设置有贴合胶（102），偏光层（101）通过贴合胶（102）与基板相贴合；可剥离胶（103），设置于偏光层（101）的相对另一侧，可通过调节贴合环境温度而失效剥离；保护层（104），通过可剥离胶（103）与偏光层（101）相贴合，用以实现对偏光层（101）的支撑和保护。
Patent WO-2018171432-A1 (WO)
Inventor: YUAN PU
IPC: H04W56/00
Filed: 2018-03-07
Abstract: 本发明实施例提供一种下行同步方法和装置。所述下行同步方法，包括：生成同步信号块的配置信息，所述同步信号块的配置信息包括位置指示信息；向用户设备发送所述同步信号块的配置信息，所述位置指示信息用于指示同步信号块在同步信号阵集合中的位置。本发明实施例可以实现UE可以更为准确的利用同步信号进行下行同步，有效提升频谱资源的利用率。
Patent WO-2019178819-A1 (WO)
Title: 一种电池盖板的墩压方法及原材及电池盖板
Inventor: WANG YOUSHENG
IPC: H01M50/147
Filed: 2018-03-22
Abstract: 本发明公开了一种电池盖板的墩压方法及原材及电池盖板，包括步骤：S0、将原材料切片成型；S1、将工件原材放入墩压模具的成型工位，原材墩压成型，一次得到具有指定凸起及凹陷的工件。S2、对成型的工件进行冲孔，一次得到带有指定孔的工件。本发明通过对工件进行一次墩压和一次冲孔，从而得到合格的工件，整个过程中，只有两个简单的工艺，不需要反复进行冲压板材，极大的降低了生产成本，具有方法简单，容易掌握，便于推广的优点。
Patent WO-2018177308-A1 (WO)
Title: 一种装配式地下建筑接口结构及其施工法
Inventor: WANG YUBIN
IPC: E02F5/06
Filed: 2018-03-28
Abstract: 一种装配式地下建筑接口(1)结构，采用凹凸型嵌入式结构，接口(1)由凸台(1-1)和凹槽(1-2)组成，凸台(1-1)的最大厚度处的厚度大于凸台(1-1)尾端与墙(2)连接处的厚度t，凹槽(1-2)开口处的宽度小于凸台(1-1)最大厚度处的厚度但大于凸台(1-1)尾端与墙(2)连接处的厚度t，凸台(1-1)嵌入凹槽(1-2)的槽内；墙(2)的底部和侧面设有运行链刀(4)的轨道(5)，施工时轨道(5)上装有链刀(4)，链刀(4)工作时仅挖掘墙(2)底部的岩土，由下向上运行的链刀(4)将墙(2)底部已挖掘的岩土带至上方，墙(2)和底部链刀(4)同时向下运行。还公开了一种装配式地下建筑接口(1)结构的施工法。
Patent WO-2018192413-A1 (WO)
Title: 一种干衣机
Inventor: SONG HUACHENG
IPC: D06F58/04
Filed: 2018-04-12
Abstract: 一种干衣机，包括滚筒（2）和支撑件（1），滚筒（2）的前端面和/或后端面分别与支撑件（1）相抵触，所述滚筒（2）与支撑件（1）的接触面上设有涂层（6），以减小滚筒转动产生的摩擦力。当滚筒（2）与支撑件（1）相抵触时，通过设置于滚筒（2）与支撑件（1）之间的涂层（6）减小了滚筒（2）转动产生的摩擦力，从而减小了干衣机电机驱动滚筒（2）转动的力矩，减小了干衣机电机的消耗功率，降低了电力消耗。当滚筒（2）与设置于支撑件（1）上的密封环（5）相抵触时，通过设置于滚筒（2）与密封环（5）之间的涂层（6）减小了滚筒（2）转动产生的摩擦力，降低了电力消耗，同时还降低了密封环（5）的磨损程度，长时间使用后仍能保障干衣风道的密封性。
Patent WO-2019134308-A1 (WO)
Inventor: ZHENG CHAO
IPC: A63F13/40
Filed: 2018-04-28
Abstract: Provided are an amusement park management system and management method. The management system comprises: a server; an information input device, which is used for inputting account information and transmitting the account information to the server-side; a mobile terminal, which is used for receiving the account information and amusement information transmitted by the server; a coordinate building system, which is connected with the server and used for setting positioning coordinates in an amusement park; a positioning electronic tag, which is arranged on an object to be positioned and transmits the positioning coordinates to the server; a first camera, which is arranged on the mobile terminal and used for shooting first amusement scenes facing to the mobile terminal; and a first display device, which is arranged on the mobile terminal and used for displaying the first amusement scenes and first virtual scenes transmitted by the server.
Patent WO-2018205918-A1 (WO)
Title: 网页监测方法、装置和存储介质
Inventor: GAO XIANGYU
IPC: G06F17/30
Filed: 2018-05-08
Abstract: 本申请公开了一种网页监控方法，包括：获取一网址；在第一时刻通过所述网址获取并保存第一内容；在第二时刻通过所述网址获取第二内容；当所述第一内容和第二内容的差别大于预设第一阈值时，判定所述网址对应的网页内容发生变更。
Patent WO-2019222872-A1 (WO)
Title: High-throughput organs-on-a-chip, and preparation method therefor and application thereof
Inventor: WEI WENBO
IPC: C12M3/00
Filed: 2018-05-21
Abstract: A high-throughput organs-on-a-chip, and a preparation method therefor and application thereof. The high-throughput organs-on-a-chip comprises a fixture unit (100), a tissue and organ constructing unit (200), and a liquid separating flow path unit (300); the fixture unit (100) comprises an upper fixture (110) and a lower fixture (120) which are detachably fixed; the tissue and organ constructing unit (200) is located between the upper fixture (110) and the lower fixture (120), and several upper fluid channels and lower fluid channels are provided in the tissue and organ constructing unit (200); the liquid separating flow path unit (300) is located between the upper fixture (110) and an upper chip (210). Since the tissue and organ constructing unit (200) in the high-throughput organs-on-a-chip is detachably fixed by means of the fixture unit (100), structures other than a porous membrane (230) in the chip can all be recycled, so that the use costs are saved and subsequent cytomics detection is also easily carried out; moreover, the provision of several upper fluid channels and lower fluid channels in the tissue and organ constructing unit (200) can achieve simultaneous simulation experiments for multiple organs, so that the throughput is improved and errors caused by experiment operations between batches are reduced.
Patent WO-2019227395-A1 (WO)
Title: Fine grained 3C-SiC thick films and a process for preparing the same
Inventor: HAN MINGXU
IPC: C23C16/32
Filed: 2018-05-31
Abstract: SiC-CVD films, in particular, fine grained 3C-SiC thick films are prepared by hybrid laser CVD, and a process for preparing the same. The process for preparing a SiC-CVD film comprises irradiating an infrared laser beam and an ultraviolet laser beam on the substrate, wherein the deposition temperature is maintained at 1523 to 1623 K in the chamber. The obtained SiC-CVD film, preferably a fine grained 3C-SiC film, has an average grain size of 0.5 to 5 m, and an improved micro-hardness, which is expressed by Vickers micro-hardness (H  v ), at 1623 K and an applied load of 300 g, of up to 35 GPa.
Patent WO-2018223989-A1 (WO)
Title: 一种通信方法及设备
Inventor: FAN BO
IPC: H04W68/02
Filed: 2018-06-06
Abstract: 本申请公开了一种通信方法及设备，其中该方法包括：第一基站发送第一请求消息，所述第一请求消息，用于请求位于目标终端的寻呼通知区内的一个或多个第二基站，寻呼所述目标终端；若所述第一基站在预设时长内接收到所述一个或多个第二基站中一个第二基站发送的第二请求消息，所述第二请求消息，用于获取所述目标终端的上下文，则所述第一基站将所述目标终端的上下文发送给发送所述第二请求消息的第二基站；采用本申请的方法和设备，可实现对处于第三状态终端设备的寻呼。
Patent WO-2019007410-A1 (WO)
Title: Beamforming training method and device
Inventor: LI YANCHUN
IPC: H04B7/0408
Filed: 2018-07-06
Abstract: The present application relates to the field of communications, and in particular relates to beamforming training technology. In a beamforming training method, an initiator has N antennas; in an ISS process, first SSW frames are transmitted in different sector directions by using each of m antennas in sequence, wherein m is not less than 1, and is less than or equal to N; in an RSS process, M antennas are used to omnidirectionally receive second SSW frames in parallel (i.e. simultaneously), and the second SSW frames are transmitted, by a responder, in different sector directions, wherein each second SSW carries information for indicating a first SSW frame having the best quality in the ISS process, and the M antennas at least include the m antennas; and an optimal transmit beam in the ISS process is determined according to the received second SSW frames. It can be seen that, in the RSS process of the present application, the initiator uses a multi-antenna parallel receiving mode, wherein same can reduce the time consumption and improve the efficiency compared with the existing multi-antenna sequential scanning (receiving) mode.
Patent WO-2019237449-A1 (WO)
Inventor: LIN XIAOZHEN
IPC: C12M1/34
Filed: 2018-07-16
Abstract: 提供一种用于理化处理直径50～400微米单个细胞的微流控芯片，其本体包括液路层、气路层和夹在中间的弹性薄膜；所述液路层包括：折返式单个细胞处理回收通道、第一试剂流入通道、第二试剂流入通道、试剂混合通道、第三试剂流入通道、反冲通道、以及负压与废液共用通道；所述气路层包括气动微阀组，其用于控制液路层各个通道的开和关；其中第一试剂流入通道、第二试剂流入通道分别与试剂混合通道的入口连通；所述试剂混合通道、第三试剂流入通道、反冲通道、负压与废液共用通道分别与折返式单个细胞处理回收通道连通，其中第三试剂流入通道和反冲通道是各自独立的通道或共用通道。还提供包括微流控芯片的微流控装置以及使用它们理化处理单个细胞的方法。
Patent WO-2019033893-A1 (WO)
Title: Cavitation erosion device for multi-physical coupled field
Inventor: CHENG FENG
IPC: G01N3/56
Filed: 2018-07-19
Abstract: A cavitation erosion device for a multi-physical coupled field comprises a light field power supply (1), a magnetic field power supply (2), a cooling system (3), an annular electromagnet (4), an amplitude change rod (5), a transducer (6), an ultrasonic power supply (7), a shielding case (8), a positive electrode plate (9), a negative electrode plate (17), an electric field generator (10), a water storage tank (11), distilled water (12), a sample (14), a container (13), a point light source (15), and light transmission glass (16). The sample (14) is disposed at the bottom of the amplitude change rod (5), and the sample (14) is immersed in the distilled water (12). The external magnetic field power supply (2), the electric field generator (10), the light field power supply (1) and the ultrasonic power supply (7) are sequentially conducted, so that the annular electromagnet (4), the positive electrode plate (9),the negative electrode plate (17), the point light source (15) and the transducer (6) surrounding the distilled water (12) form a multi-physical coupled field of magnet, electricity, light and sound in the distilled water (12), and complex cavitation erosion is generated on the surface of the sample (14). Multiple physical fields of the device can be synergistically or independently controlled; cavitation erosion experiments with different degrees can be performed on sample materials by adjusting the intensity of the magnetic field, the intensity of the electric field, the intensity of the light field and the ultrasonic frequency, and the device is suitable for cavitation erosion resistance evaluation experiments of small sample materials.
Patent WO-2019019950-A1 (WO)
Title: Direct-current arc-extinguishing circuit and device
Inventor: GUO QIAOSHI
IPC: H01H9/30
Filed: 2018-07-19
Abstract: A direct-current arc-extinguishing circuit and device, and particularly, a direct-current arc-extinguishing circuit and device for carrying out quick arc extinguishment on a mechanical switch and other mechanical contacts. A mechanical switch on which arc extinguishment needs to be carried out is serially connected to a load. The direct-current arc-extinguishing circuit is characterized by comprising a voltage detection switch and a capacitor; the voltage detection switch and the capacitor are connected; during the breaking of the mechanical switch, the capacitor forms a discharging circuit by means of the voltage detection switch and the load, so as to carry out breaking and arc extinguishment on the mechanical switch. The present invention has a proper design, and has the advantages of low costs and a quick arc extinguishment speed.
Patent WO-2019232897-A1 (WO)
Title: Large angle buffering hinge
Inventor: WU TENGQING
IPC: E05D11/10
Filed: 2018-07-23
Abstract: A large angle buffering hinge, mainly comprising a hinge cup (1), a buffer (2) and a hinge arm (3), and further comprising a short rod (5), a long rod (6) and a triangular connector (8). The hinge cup (1) is hinged to one end of the short rod (5), and the other end of the short rod (5) is hinged to one end of the long rod (6), and the other end of the long rod (6) is hinged to the hinge arm (3). The buffer (2) is provided within the long rod (6), an end of the buffer (2) is hinged to the short rod (5) and the long rod (6), and a telescopic end of the buffer (2) is hinged to the triangular connector (8). The triangular connector (8) is provided with an elastic pressing member (9) and a pulley (10) hinged thereto, left and right sides of the triangular connector (8) are each provided with a guide rail groove (81), and the guide rail groove (81) is provided with a first rivet (11), two ends of which are fixed on the long rod (6). The end rotary arm of the elastic pressing member (9) presses against the first rivet (11), a small cam (12) is provided within the hinge arm (3), and the pulley (10) slides on a surface of the small cam (12). The hinge has a compact structure, and the opening angle is large, which can reach 155 degrees, suitable for different use situations.
Patent WO-2020024115-A1 (WO)
Title: Chip assembly and terminal device
Inventor: CHANG MING
IPC: H01L23/31
Filed: 2018-07-31
Abstract: A chip assembly and a terminal device, which are used to achieve the bonding of an upper substrate to a lower substrate, so that the relative position of the upper substrate and the lower substrate is stabilized, thereby improving the performance of the chip assembly. The chip assembly comprises: a first substrate and a second substrate arranged opposite to each other, the second substrate being provided with a feeding path; a first radiation patch disposed on a surface of the first substrate facing toward or away from the second substrate; a second radiation patch disposed on a surface of the second substrate facing toward the first substrate, the first radiation patch being coupled to the second radiation patch; a radio frequency processing chip disposed on a surface of the second substrate facing away from the first substrate and electrically connected to the second substrate for use in feeding the second radiation patch by means of the feeding path; one or more solder balls, each solder ball being placed between the first substrate and the second substrate for use in achieving the connection of the first substrate and the second substrate; and one or more pieces of first adhesive, wherein the first substrate is provided with one or more via holes, one end of each piece of first adhesive is disposed in one via hole, and the other end is connected to the surface of the second substrate facing toward the first substrate for use in fixing the relative position of the first substrate and the second substrate.
Patent WO-2019029442-A1 (WO)
Title: Item storage method for shared refrigerator, and shared refrigerator
Inventor: WANG BING
IPC: F25D29/00
Filed: 2018-08-03
Abstract: An item storage method for a shared refrigerator (100), and a shared refrigerator (100). The item storage method for a shared refrigerator (100) comprises: establishing, by means of a network, a data connection to a mobile terminal of a user to send to the mobile terminal position information of the shared refrigerator (100); acquiring a trigger operation of the user for storing an item; and determining, according to the trigger operation, an item storage space selected by the user for storing the item, and controlling a corresponding electronically controlled lock to open, such that the user can store the item. The solution enables a user in a public venue or outdoors to conveniently locate the closest shared refrigerator (100), such that an item requiring storage can be stored in a timely manner so as to prevent food quality from deteriorating and even staling of the item, effectively avoiding wastage.
Patent WO-2019179036-A1 (WO)
Inventor: ZHAO FENG
IPC: G10L25/30
Filed: 2018-08-24
Abstract: A deep neural network model, an electronic device, an identity authentication method, and a storage medium. The method comprises: obtaining standard voice data corresponding to an identity to be authenticated after current voice data of a target user to be subjected to identity authentication is received, and performing framing processing on the current voice data and the standard voice data according to a preset framing parameter to obtain a current voice frame set and a standard voice frame set (S10); using a preset filter to separately extract preset types of acoustic features of each voice frame in the two voice frame sets (S20); inputting the extracted preset types of acoustic features to a pre-trained deep neural network model with a preset structure to obtain feature vectors with a preset length and respectively corresponding to the current voice data and the standard voice data (S30); and calculating the cosine similarity of the two obtained feature vectors, and determining an identity authentication result according to the calculated cosine similarity (S40). According to the method, the accuracy of identity authentication for speakers is improved.
Patent WO-2019184230-A1 (WO)
Inventor: YUAN JIA
IPC: G06F21/62
Filed: 2018-08-29
Abstract: The present application provides an information masking method. The method comprises the following steps: in a file to be processed, retrieving, according to a retrieval policy corresponding to the file to be processed, a target character segment matching key information in a key information masking library; and masking the target character segment. In the method of the present application, a file is retrieved according to set key information related to user privacy, and key information retrieved from the file is masked, such that service personnel cannot view the key information in the file when acquiring the file, thereby effectively preventing the service personnel from acquiring user information, preventing leakage of sensitive information, and improving security of the user information. Different retrieval policies are applied to different files, thereby improving efficiency and accuracy of retrieving key information. The present application further provides an information masking device, a terminal, and a computer readable storage medium.