baber/WOPTO huggingface dataset:
Patent WO-2020062042-A1 (WO)
Inventor: LU QIANXI
IPC: H04W48/18
Filed: 2018-09-28
Abstract: Provided in the embodiments of the present application are a wireless communication method and device, which can be used for determining a RAT for which a terminal device performs connection management. The method comprises: a first terminal device sending a first message to a second terminal device, wherein the first message is used to indicate at least one radio access technique (RAT), and the at least one RAT is a RAT requested by the first terminal device for connection management and/or a RAT supported by the first terminal device.
Patent WO-2020019507-A1 (WO)
Inventor: ZHENG YUYING
IPC: H01G11/30
Filed: 2018-09-29
Abstract: 本发明公开了一种N和S双掺杂石墨烯-石墨烯纳米带气凝胶的制备方法，属于电极材料制备技术领域。首先将氧化石墨烯纳米带和氧化石墨烯混合后，加入去离子水，超声均匀后得到混合液；往混合液中加入吡咯和噻吩，进行一次水热反应，得到水凝胶；将得到的水凝胶放入KNO 3溶液中，进行二次水热反应，冷却至室温后，再经过滤、洗涤和冷冻干燥；将冷冻干燥后所得产物在氩气气氛中热裂解，制得所述N和S双掺杂石墨烯-石墨烯纳米带气凝胶。本发明在石墨烯气凝胶中N和S，其中N和S的双掺杂可以进一步增强碳材料的反应性和导电性，相比于单一的N或S掺杂材料，通过引入更多的活性位点，从而提高其电化学性能，有望应用于超级电容器的电极材料中。
Patent WO-2019095899-A1 (WO)
Title: 素材标注方法以及装置、终端和计算机可读存储介质
Inventor: LU YAN
IPC: G06K9/62
Filed: 2018-10-11
Abstract: 公开了一种素材标注方法以及装置、终端和计算机可读存储介质，根据预设的算法模型对待标注素材集中的素材进行标注，基于标注结果生成与标注的结果对应的训练集，通过训练集更新算法模型，用于下一次素材标注。
Patent WO-2020073319-A1 (WO)
Inventor: ZHU ZHIPENG
IPC: B29C45/14
Filed: 2018-10-12
Abstract: An injection mold and an injection molding method. The injection mold comprises a front mold (10) and a rear mold (20) which are matched, mold cavities (30) for injection molding liquid to flow in are formed by the front mold (10) and the rear mold (20), a first portion (1301) of workpieces (130) can be partly contained in the mold cavities (30), so that the first portion (1301) of the workpieces (130) and a second portion (1302) of the workpieces (130) are integrally molded to form the workpieces (130) when injection molding the second portion (1302) of the workpieces (130). The mold cavities (30) for the injection molding liquid to flow in are formed by the front mold (10) and the rear mold (20) of the injection mold, the first portion (1301) of the workpieces (130) can be partly contained in the mold cavities (30), so that the first portion (1301) of the workpieces (130) and the second portion (1302) of the workpieces (130) are integrally molded to form the workpieces (130) when injection molding the second portion (1302) of the workpieces (130) by the injection molding liquid entering the mold cavities (30). A process of assembling the first portion (1301) of the workpieces (130) and the second portion (1302) of the workpieces (130) is omitted. Compared with the existing process of independently manufacturing two parts of each workpiece (130) firstly and then assembling the two parts, the production efficiency can be improved, and the production cost can be reduced.
Patent WO-2019114398-A1 (WO)
Title: 一种麦克风颈环耳机
Inventor: CHEN YUNJI
IPC: H04R1/10
Filed: 2018-10-15
Abstract: 本申请公开了一种麦克风颈环耳机，该麦克风颈环耳机包括颈环和耳机主体，当麦克风颈环耳机被正常佩戴时，颈环被佩戴在用户的颈部，耳机主体被佩戴在用户的耳朵中，其中，颈环包括：第一麦克风阵列，设置在颈环的第一端部，第一麦克风阵列至少包括第一麦克风与第二麦克风，用于拾取第一麦克风阵列周围的第一语音信号，其中，当麦克风颈环耳机被正常佩戴时，第一麦克风与第二麦克风的连线指向用户的口部，通过该麦克风颈环耳机，能够降低环境噪声对通话的影响。
Patent WO-2020087410-A1 (WO)
Inventor: LV ZHENGYONG
IPC: H05K7/20
Filed: 2018-10-31
Abstract: The present application provides a circuit board and a supercomputing device. The circuit board comprises a circuit board body and at least one heat sink. A first engagement portion is provided on the circuit board body, and a second engagement portion is provided on each of the at least one heat sink. The first engagement portion is engaged with the second engagement portion, such that the at least one heat sink is disposed on the circuit board body. The heat sink can be fit onto the circuit board body. The engagement method as described above is employed such that the heat sink can be easily attached to or detached from the circuit board, improving the efficiency and convenience of mounting and removing the heat sink.
Patent WO-2019119990-A1 (WO)
Inventor: NIE YONGZHONG
IPC: A61B5/01
Filed: 2018-11-01
Abstract: 一种可感知体内温度的智能吻合器，包括抵钉座组件(10)、主体组件(20)和控制模块，所述抵钉座组件(10)包括沿其中心轴方向延伸的空心轴(11)，所述主体组件(20)包括壳体(21)和设置于所述壳体(21)内部的中心杆(22)，以及：导电连接件(30)，包括可插拔连接的第一连接件(31)和第二连接件(32)，所述第一连接件(31)与所述空心轴(11)连接，所述第二连接件(32)与所述中心杆(22)连接，所述导电连接件(30)与所述控制模块电连接；温度感应组件(12)，设置于所述抵钉座组件(10)的内部，所述温度感应组件(12)与所述导电连接件(30)电连接，以检测人体体内的温度值。该智能吻合器允许在手术过程中测量患者体内温度，能够减少手术误判和误操作。
Patent WO-2019096045-A1 (WO)
Title: 网络交互方法、电子设备、客户端及服务器
Inventor: LIU XIAOMING
IPC: H04L29/06
Filed: 2018-11-07
Abstract: 本说明书实施方式公开了网络交互方法、电子设备、客户端及服务器，其中，应用于客户端中的方法包括：向服务器发出识别码获取请求，以用于所述服务器提供识别码；接收所述服务器反馈的识别码；展现所述识别码，以用于将所述识别码输入给提供文件的电子设备，以使所述识别码与所述文件对应；接收所述服务器提供的文件信息；所述文件信息用于表示所述识别码对应的文件；向所述服务器发出表单确认信息；所述表单确认信息用于表示完成根据所述文件信息填写表单。
Patent WO-2020087559-A1 (WO)
Inventor: HUANG XIAOYU
IPC: G09G3/36
Filed: 2018-11-08
Abstract: An overcurrent protection circuit and display drive device, comprising: when input current of a front end corresponding to a logic signal experiences overcurrent, preventing the input current of the front end experiencing overcurrent from being transmitted to a drive chip, thereby preventing damage to the drive chip.
Patent WO-2020082442-A1 (WO)
Inventor: YANG SHENGHAO
IPC: H04L1/00
Filed: 2018-11-13
Abstract: The present invention relates to a multihop network communication method and system based on batch sparse codes. The method comprises the following steps: a transmission layer in a source node receives data files from a data source, each data file comprising multiple data packets; when a file sending request is received, the transmission layer in the source node utilizes outer codes in the batch sparse codes for encoding the data packets so as to generate multiple batches, each batch comprising multiple encoding packs and sent to a network layer; when the network layer receives the packs in the batches, whether the current node is a destination node is detected, if the current node is not the destination node, the network layer performs recoding on the packs in the same batch and sends the recoded packs to the next node; and if the current node is detected to be the destination node, the packs are sent to a transmission layer in the destination node, and the transmission layer in the destination node decodes the received batches, so as to restore the data files.
Patent WO-2019114480-A1 (WO)
Title: 多基色转换方法、显示面板的驱动方法及驱动装置、和显示设备
Inventor: XI YANHUI
IPC: G09G5/02
Filed: 2018-11-13
Abstract: 一种多基色转换方法，包括：建立显示面板的空间色域模型；根据目标颜色的色坐标以及每个外围面各顶点所对应颜色的色坐标，确定目标颜色对应的目标外围面；根据目标外围面的各顶点所对应颜色的每种基色的灰阶，获取目标颜色的一部分基色的参考灰阶；获取目标颜色的其余基色的参考灰阶和目标颜色的参考亮度；根据目标颜色的参考亮度与目标亮度的比例关系，将目标颜色的每种基色的参考灰阶分别转换为目标灰阶。相应地，一种显示面板的驱动方法及驱动装置和显示设备，能够准确地将目标颜色的色彩信息转换为多种基色的目标灰阶。
Patent WO-2020102993-A1 (WO)
Inventor: ZHENG ZHOU
IPC: A61B8/00
Filed: 2018-11-20
Abstract: An ultrasound probe, comprising a housing (100), an acoustic head (200), a driving apparatus (300), and a transmission shaft (400). The driving apparatus (300) transmits a vibration to the acoustic head (200) via the transmission shaft (400). At least one transmission shaft (400) is provided thereon with a damping mechanism. The damping mechanism is capable of applying to the corresponding transmission shaft (400) a resistance opposite in direction to the motion of the transmission shaft (400). When power is turned off, the driving apparatus (300) ceases to operate, at which time, the transmission shaft (400) generates a residual vibration under the effect of inertia, and the resistance provided by the damping mechanism is opposite in direction to the motion of the transmission shaft (400); therefore, the energy of the residual vibration of the transmission shaft (400) can be canceled out quickly, thus reducing the residual vibration of the transmission shaft (400), thereby reducing the residual vibration of the acoustic head (200), and increasing the measurement accuracy of the probe.
Patent WO-2020073440-A1 (WO)
Inventor: WANG MINGLIANG
IPC: H04L25/02
Filed: 2018-11-22
Abstract: A data storage method for a transmission signal: when a transmission signal is received, parsing a clock signal corresponding to the transmission signal to obtain the signal frequency of the clock signal; acquiring a zero volt time point of the clock signal after overlapping same with the transmission signal according to the signal frequency; acquiring a preset duration, and according to the zero volt time point and the preset duration, generating a data storage time period which employs the zero volt time point as a center time point; and storing data of the transmission signal in the data storage time period. Further provided by the present application are a data storage device for a transmission signal and a computer readable storage medium.
Patent WO-2020107150-A1 (WO)
Inventor: WU SANKUEI
IPC: F16H25/22
Filed: 2018-11-26
Abstract: A planetary roller screw and a machine tool having the planetary roller screw. The planetary roller screw comprises: a main screw rod (1) having an external thread (11) and a connection portion (12); a nut (2) having a hole running between two end surfaces thereof, an inner wall surface forming the hole having an internal thread (21); and a planet set (2) having a support structure supporting multiple roller posts (33) to rotate in place relative to the support structure. The multiple roller posts (33) are identical to each other and have external threads (332). The external threads (332) of the multiple roller posts (33) mesh with the external thread (11) of the main screw rod (1) and the internal thread (21) of the nut (2). The planetary roller screw having the above structure resolves the issues of structural complexity and noise during rotation for existing planetary roller screws.
Patent WO-2020113487-A1 (WO)
Inventor: CHEN HUI
IPC: A23L33/105
Filed: 2018-12-06
Abstract: A healthcare capsule having an auxiliary protection function against radiation hazards, formed by mixing a Ganoderma lucidum extract, cell wall-broken ganoderma lucidum spore powder, a Lycium barbarum fruit, a Hericium erinaceus extract, a Lentinula edodes extract, and a Tremella fuciformis extract.
Patent WO-2020019626-A1 (WO)
Title: Pulse-free spraying machine
Inventor: CHENG WEIMIN
IPC: E21D11/10
Filed: 2018-12-10
Abstract: A pulse-free spraying machine resolves the issue of pulsing during pumping of a concrete spraying machine. The pulse-free spraying machine comprises a machine frame (1), a pumping mechanism (2), a rotation mechanism (3), a motor, and a hydraulic system (4). The pumping mechanism (2) comprises a hopper (21), a material chamber (22), a concrete feeding mechanism (23), an auxiliary feeding mechanism (24), and a distribution valve (26). The hopper (21) of the pumping mechanism (2) is disposed above the material chamber (22). The distribution valve (26) is disposed inside the material chamber (22). The concrete feeding mechanism (23) and the auxiliary feeding mechanism (24) each comprise hydraulic cylinders (234, 244), concrete pistons (231, 241), and concrete cylinders (233, 243). A material outlet pipe (25) is a three-way pipe fixed at a side surface of the material chamber (22). An auxiliary material outlet pipe (252) of the material outlet pipe (25) is connected to the auxiliary concrete cylinder (243). A vent hole (251) is disposed on the auxiliary concrete cylinder (243). The rotation mechanism (3) comprises a hydraulic rotation cylinder (31), a rotation arm (32), and a hydraulic rotation cylinder base (33). An auxiliary piston rod (242) of the auxiliary feeding mechanism (24) passes through a core shaft (34) and pushes the concrete piston (241) to move inside the auxiliary hydraulic cylinder (243). The pulse-free spraying machine stably feeds a material, has a compact structure, and is wear-resistant.
Patent WO-2019114674-A1 (WO)
Title: 一种坎格雷洛四钠盐的制备方法
Inventor: TANG FANGHUI
IPC: C07H19/20
Filed: 2018-12-11
Abstract: 本申请涉及一种坎格雷洛四钠盐的制备方法，以N-[2-(甲硫基)乙基]-2-[(3,3,3-三氟丙基)硫基]腺苷为原料，经两步反应得到含坎格雷洛四钠盐的反应液，再经C18硅胶柱层析进行分离纯化一次，即得到坎格雷洛四钠盐纯品。本申请的合成路线短，反应条件温和，反应充分，操作简便，产物收率高、纯度高，环境友好，适合大规模制备。
Patent WO-2020052141-A1 (WO)
Inventor: LIU HUA
IPC: F04B39/02
Filed: 2018-12-19
Abstract: 一种喷液环（40）和制冷剂润滑轴承组件，其中喷液环（40）包括环体（41），环体（41）上设有储液腔（411）和多个导液孔（412），储液腔（411）围绕环体（41）的轴线一周，导液孔（412）的入口与储液腔（411）导通，导液孔（412）的出口朝向待润滑的轴承（30）的端面，多个导液孔（412）沿环体（41）的周向均匀间隔分布。通过设置绕环体（41）轴线一周的储液腔（411）与各个导液孔（412）导通，制冷剂通过储液腔（411）分散到各个导液孔（412）中，且多个导液孔（412）的出口沿环体（41）的周向均匀间隔分布，使得喷液环（40）能够在待润滑的轴承（30）上均匀喷液，进而提高润滑效果。
Patent WO-2019129028-A1 (WO)
Inventor: LI BIN
IPC: G01N35/00
Filed: 2018-12-26
Abstract: Disclosed are a fully-automatic multi-channel detection apparatus for a butt falling trend of a cigarette, and a detection method. The apparatus comprises a multi-channel turntable structure unit, an automatic sample introduction unit for a cigarette sample, an automatic lighting and burning line detection unit for a cigarette sample, a unit for clamping and applying force to a cigarette during a test, an automatic detection and removal unit for a falling butt, a unit for gathering smoke during smoking, a smoking unit and a smoke exhaust unit arranged in a main body frame, and an electric circuit and a gas circuit control unit for controlling the actions and processes of the units. By means of the apparatus, according to certain steps, automatic lighting and burning line detection is carried out on cigarette samples inserted into a turntable in sequence, and a controllable external force is applied to cigarettes that are burning and being smoked, in order to detect the butt falling trend performance of this kind of cigarette product by means of the butt falling phenomenon of multiple cigarettes. The test repeatability and the working efficiency can be improved using the apparatus.
Patent WO-2019129126-A1 (WO)
Title: 基于血清标志物mmp-7的胆道闭锁诊断试剂盒
Inventor: TANG SHAOTAO
IPC: G01N33/573
Filed: 2018-12-27
Abstract: 本发明涉及一种基于血清标志物MMP-7蛋白的胆道闭锁诊断试剂盒，所述诊断试剂盒包括抗人MMP-7单克隆抗体包被的酶标板、阴性对照液、阳性对照液、酶标试剂、酶底物溶液、封闭液、样品稀释液、洗涤液和终止液；与现有技术相比，本发明提供了一种新的灵敏、安全、可靠、易操作的商品化试剂盒，定量测定人血清中MMP-7的水平，有助于早期诊断BA；提供的血清生物标志物蛋白质MMP-7诊断BA的敏感性为100％，特异性为95.6％，具有高特异性和高敏感性的特点；提高BA的早期诊断率，减少误诊，提高BA自身肝脏生存率。
Patent WO-2019129162-A1 (WO)
Inventor: ZHANG GUOZHONG
IPC: F21V19/00
Filed: 2018-12-27
Abstract: An LED lamp with a bulb shape comprises a glass bulb shell (1), an LED assembly (4), a heat sink (3) and a lamp head (2). The LED assembly (4) is configured to sleeve a first end of the heat sink (3), and the lamp head (2) is configured to sleeve a second end of the heat sink (3). The glass bulb shell (1) covers the heat sink (3). The LED assembly (4) is located in a space formed between the glass bulb shell (1) and the heat sink (3). Heat generated by the LED assembly (4) is transferred to the lamp head (2) and the glass bulb shell (1) through the heat sink (3) when the LED assembly (4) emits light.
Patent WO-2019205750-A1 (WO)
Title: Detection method for pixel circuit, driving method for display panel, and display panel
Inventor: SONG DANNA
IPC: G09G3/3233
Filed: 2019-01-15
Abstract: A detection method for a pixel circuit, and a display panel (10) and a driving method therefor. The pixel circuit comprises a driving transistor (T3); the driving transistor (T3) comprises a gate and a first pole; the first pole of the driving transistor (T3) is coupled to a sensing line (SEN). The detection method comprises: applying a reference data voltage (Vre) to the gate of the driving transistor (T3) during a reference charging period (OPr), and obtaining a reference voltage (Vrs) from the sensing line (SEN) during a first duration (t1-t0) after applying the reference data voltage (Vre) (S10); and applying a detection data voltage (Vd) different from the reference data voltage (Vre) to the gate of the driving transistor (T3) during a data charging period (OPd), and obtaining an initial sensing voltage (Vri) from the sensing line (SEN) during a first duration (t3-t2) after applying the detection data voltage (Vd) (S20). A sensing voltage (Vs) of the pixel circuit is obtained at least on the basis of the reference voltage (Vre) and the initial sensing voltage (Vri), and a threshold voltage (Vth) of the driving transistor is obtained on the basis of the sensing voltage (Vs). The detection method for a pixel circuit can eliminate adverse effects of environmental noise on the threshold voltage (Vth) detection of the driving transistor (T3).
Patent WO-2019161721-A1 (WO)
Title: Correspondence processing method and device based on interworking rcs system
Inventor: AN SHAOHUI
IPC: H04L12/58
Filed: 2019-01-21
Abstract: Provided in the present invention are a correspondence processing method based on an interworking rich communication suite (RCS) system and a device for implementing the method. According to the method, a response message in which a user agrees to join an external network group site is acquired. When a domain name of a network at which the external network group site is located is not consistent with a domain name of a network at which the user is located, the correspondence between the current network of the user and the external network group site is saved so as to at least solve the problem in existing technology in which the RCS system that is interconnected by service providers is unable to process group lists of current networks of users in RCS systems of other service providers.
Patent WO-2020087786-A1 (WO)
Inventor: TANG YUEJUN
IPC: G06F3/047
Filed: 2019-01-22
Abstract: 本申请提供的内嵌式触控显示面板及显示装置，包括：基板；遮光金属层，遮光金属层设置在基板上，遮光金属层包括遮光金属以及多根触控导线；以及复用电极层，复用电极层设置在遮光金属层上，且复用电极层包括多个复用金属块，多个复用金属块与多根触控导线一一对应电连接。
Patent WO-2020113800-A1 (WO)
Title: Overturning snake cube
Inventor: CHEN SHANXIONG
IPC: A63H33/00
Filed: 2019-01-23
Abstract: An overturning snake cube, comprising a connection rope (2) and multiple cubes (1), wherein both ends of the connection rope (2) are respectively provided with a clamping head (22); the cube (1) is a hollow body; a lining (10) is provided in the cube (1); the cube (1) is provided with a first mobile guide rail groove (3) and a second mobile guide rail groove (4); the first mobile guide rail groove (3) comprises a connection groove from the center of a left side surface of the cube (1) to the center of a front side surface of the cube (1); the second mobile guide rail groove (4) comprises a connection groove from the center of a right side surface of the cube (1) to the center of a rear side surface of the cube (1); the first mobile guide rail groove (3) and the second mobile guide rail groove (4) are respectively provided with a through hole (7) through which the connection rope (2) penetrates; the connection rope (2) can slide in the first mobile guide rail groove (3) and the second mobile guide rail groove (4); the multiple cubes (1) are connected by means of the connection rope (2); the clamping heads (22) at both ends of the connection rope (2) are located in two cubes (1) on the outmost ends; and the diameter of each clamping head (22) at both ends of the connection rope (2) is greater than the through hole diameter of the first mobile guide rail groove (3) and the second mobile guide rail groove (4). The overturning snake cube has a reasonable structure, can freely overturn, and can be converted into a cub shape and parts of other natural shapes.
Patent WO-2019184598-A1 (WO)
Title: 车辆使用中跨语言的处理方法和装置
Inventor: PIAO YONGBIN
IPC: G06Q30/06
Filed: 2019-02-01
Abstract: 本说明书实施例提供一种车辆使用中跨语言的处理方法和装置，根据上述方法，乘客搭乘车辆后，乘客终端识别车辆终端的识别码，接收乘客以第一语言输入的目的地地址，将这样的目的地地址转换为地理位置坐标，然后连同车辆信息一起，发送给车辆管理系统服务器。车辆管理系统服务器接收到车辆信息和地理位置坐标之后，将地理位置坐标转换为本地语言，然后将本地语言的目的地地址发送到车辆信息所对应的车辆终端。如此，克服了乘客与车辆司机之间跨语言交流的障碍。
Patent WO-2019179266-A1 (WO)
Inventor: HUANG JUNZHOU
IPC: A01K7/02
Filed: 2019-02-18
Abstract: Provided is a pet water drinking device, comprising a water storage tub (10), a water pump (50), a cover (20), a filter (80), a water storage platform (30) and a flower shaped head (40), the cover (20) is closely covered on the upper end of the water storage tub (10), a first groove (23) is formed in the middle portion of the cover (20), a first hollow tube (25) penetrating into the water storage tub (10) is disposed at the center of the bottom of the first groove (23) and a plurality of through holes (26) are provided around the first hollow tube (25), a first step (24) is formed around the upper end of the first groove (23); the filter (80) is received in the first groove (23); a second hollow tube (32) extending downwardly from the center of the water storage platform (30) is connected to the water outlet of the water pump (50) through the first hollow tube (25), the inner edge (33) of the water storage platform (30) is higher than the outer edge (34), the outer periphery is provided with an outer side wall (35) supported on the first step (24), and a flow guiding notch (36) is provided along the bottom of the outer side wall (35); the flower shaped head (40) is provided with a plurality of water outlets (44) on the outer circumference, a third hollow tube (41) extending downward in the center is inserted and fixed in the second hollow tube (32), and a water retaining cap (45) is also provided to cover the top of the third hollow tube (41). The pet water drinking device can provide the pet with flowing and fresh living water to ensure the health of the pet drinking water.
Patent WO-2020118964-A1 (WO)
Inventor: LV YUEMIN
IPC: G09G3/34
Filed: 2019-03-27
Abstract: A same-screen different-image display apparatus (100) using directional backlighting, comprising a display screen (10) and a backlight part (20). A pixel array (11) of a display screen (10) comprises a plurality of pixel rows (111) arranged along the horizontal direction; when in operation, the display picture is outputted in a frame-by-frame and per frame pixel row-by-pixel row scanning format; at least two row groups (14) arranged in the horizontal direction are defined in the pixel array (11) of the display screen (10), each row group (14) being formed of a plurality of successively adjacent pixel rows (111); for any one row group (14), within the time duration (T) of any one frame, the time period that said row group (14) has an active scanning row (111') is defined as a first prohibited time period (T10) and the subsequent intra-frame time as a first allowed time period (T11); the backlight part (20) at least comprises two backlight groups (21); the backlight groups (21) correspond to the row groups (14), and the light emission thereof can be individually controlled to be projected towards a first field of view (101) or a second field of view (102); for any one row group (14), in the first allowed time period (T11) thereof, the backlight group corresponding to same emits light and projects toward the first or second field of view (101, 102). The problem of image crosstalk can be solved, and no black edges will appear, and the brightness of the display apparatus can also be easily increased.
Patent WO-2020082692-A1 (WO)
Title: Cp-abe-based policy update method and system
Inventor: WANG SHULAN
IPC: H04L29/06
Filed: 2019-04-02
Abstract: Disclosed are a CP-ABE-based policy update method and system. The method comprises: a data owning terminal encrypting target data by means of a pre-set encryption algorithm and uploading a generated ciphertext to a cloud-end server, and generating an updated key on the basis of a new access policy in the data owning terminal and uploading the updated key to the cloud-end server; and the cloud-end server updating the ciphertext by means of the received updated key. Thus, in the present invention, ciphertext updating in a data owning terminal is entrusted to a cloud-end server, so that the data owning terminal does not need to perform computation related to ciphertext updating, and thus, the amount of computation of the data owning terminal can be efficiently reduced and the overhead of communication between the data owning terminal and the cloud-end server can be reduced.