baber/WOPTO huggingface dataset:
Patent WO-2020259414-A1 (WO)
Title: 发声装置、显示装置及终端
Inventor: FAN ZEHUA
IPC: G06F3/043
Filed: 2020-06-19
Abstract: 本申请涉及一种发声装置、显示装置及终端。所述发声装置包括第一电极层、绝缘层、电磁线圈和磁性振膜；第一电极层设于显示基板；绝缘层设于第一电极层远离显示基板的一侧；电磁线圈设于绝缘层远离第一电极层的一侧，并且电磁线圈在显示基板上的投影位于非开口区，绝缘层上设置有过孔，电磁线圈和所述第一电极层通过过孔连接；磁性振膜设于电磁线圈远离绝缘层的一侧，用于响应电磁线圈产生的磁场而振动发声。本申请提供的技术方案实现了屏幕内部发声，解决了由于激励器封装尺寸较大，而屏幕下的空间较小，导致激励器排布困难，并且激励器的位置受限，无法进行全屏发声的问题。
Patent WO-2022006814-A1 (WO)
Title: Machine learning handover prediction based on sensor data from wireless device
Inventor: REN YUWEI
IPC: H04W36/00
Filed: 2020-07-09
Abstract: A method of wireless communication by a user equipment (UE), comprises inputting sensor data, captured at the UE, to a local machine learning model. The method also includes extracting features from the sensor data, with the local machine learning model, while anonymizing the sensor data. The method further includes transmitting the features to a base station, and receiving a handover decision from the base station based on the features. A method of wireless communication by a base station inputs anonymized sensor feature data, received from a user equipment (UE), into a network machine learning model. The base station also inputs handover decision information into the network machine learning model. The method further includes inferring a handover decision based on the handover decision information and the anonymized sensor feature data, and transmitting the handover decision to the UE.
Patent WO-2021063080-A1 (WO)
Inventor: ZHOU KESONG
IPC: G06F1/16
Filed: 2020-07-17
Abstract: 一种显示主体(10)及拼接式智能交互平板，其中，显示主体(10)包括显示模组和边框组件(5)，显示模组包括背板(1)和依次设置在背板(1)的一侧的扩散板(2)、光学膜片(3)和盖板(4)，边框组件(5)设置在显示模组的周部，背板(1)与扩散板(2)间隔设置，背板(1)靠近扩散板(2)的一侧设置光源组件(6)，光源组件(6)抵接扩散板(2)；显示模组的周部设置有至少一个拼接侧和非拼接侧，边框组件(5)包括设置在拼接侧的第一框条(501)和设置在非拼接侧的第二框条(502)，光学膜片(3)邻近于拼接侧的边夹设在第一框条(501)与盖板(4)之间，光学膜片(3)邻近于非拼接侧的边设置有悬挂孔(302)，第二框条(502)上设有与悬挂孔(302)插接的悬挂柱(504)。该显示主体(10)的非显示区域较窄，显示效果好，且整体厚度较薄。
Patent WO-2021018185-A1 (WO)
Title: Uplink transmission resource determination method, apparatus and system
Inventor: GOU WEI
IPC: H04L5/00
Filed: 2020-07-29
Abstract: Provided are an uplink transmission resource determination method, apparatus and system. The uplink transmission resource determination method comprises: configuring a PUCCH resource set group for an uplink node; and according to a preset rule, determining, from the PUCCH resource set group, a PUCCH resource used by the uplink node in an uplink subslot.
Patent WO-2021109601-A1 (WO)
Inventor: HAN RUQUAN
IPC: A61B5/00
Filed: 2020-07-31
Abstract: A method for measuring the depth of anesthesia, a storage medium, and an electronic device. The method comprises: obtaining an electroencephalography signal and extracting the signal characteristic of the electroencephalography signal (S10); obtaining a predicted electroencephalography signal corresponding to the electroencephalography signal and extracting the predicted signal characteristic of the predicted electroencephalography signal (S20); and generating a simulated electroencephalography signal corresponding to the electroencephalography signal according to the signal characteristic and the predicted signal characteristic, and determining a depth of anesthesia value according to the simulated electroencephalography signal (S30). The predicted electroencephalography signal generated by a network brain model is combined with an actually measured electroencephalography signal to obtain the simulated electroencephalography signal, and then the depth of anesthesia is calculated according to the simulated electroencephalography signal. In this way, the actually measured electroencephalography signal can be verified according to the predicted electroencephalography signal, which can improve the accuracy of the depth of anesthesia obtained by measurement, improve the reliability of the depth of anesthesia, and improve the dynamic real-time tracking capability and anti-interference capability of the depth of anesthesia measurement.
Patent WO-2021036758-A1 (WO)
Title: Bulk acoustic wave resonator
Inventor: MIU JIANMIN
IPC: H03H9/15
Filed: 2020-08-07
Abstract: Provided is a bulk acoustic wave resonator, comprising: a first electrode (10), a piezoelectric layer (20), and a second electrode (30), said piezoelectric layer (20) being arranged between said first electrode (10) and said second electrode (30); the piezoelectric layer (20) is provided with at least one slit (21); along the direction in which the first electrode (10) points toward the second electrode (30), said slit (21) at least runs through the piezoelectric layer (20). The slit (21) reduces the generation of transverse standing waves, thereby reducing noise and improving the performance of the bulk acoustic wave resonator.
Patent WO-2021027745-A1 (WO)
Inventor: ZHANG CHAORUI
IPC: G06F16/22
Filed: 2020-08-07
Abstract: L'invention concerne un procédé et un appareil de reconstruction de graphe, se rapportant au domaine technique des communications et réalisant un calcul parallèle de graphe présentant une charge équilibrée, un faible coût de communication et un temps d'exécution court. Le procédé comprend les étapes suivantes : une première machine sélectionne un premier sommet dans un ensemble de sommets locaux d'un sous-graphe (S801) ; si le degré du premier sommet est inférieur ou égal à un premier seuil prédéfini, la première machine fusionne le premier sommet et les sommets adjacents, à l'intérieur d'un nombre prédéfini de sauts vers le premier sommet, dans l'ensemble de sommets locaux en un super-sommet (S802) ; et si le degré du premier sommet est supérieur ou égal à un second seuil prédéfini, la première machine duplique le premier sommet afin d'obtenir N sous-sommets, et divise les arêtes du premier sommet dans le sous-graphe de la première machine en N parties et relie respectivement ces derniers aux N sous-sommets (S803).
Patent WO-2021135340-A1 (WO)
Inventor: XU SHENYU
IPC: G10L19/005
Filed: 2020-09-03
Abstract: 一种语音信号处理方法，该方法包括：编码器从原始语音信号中获取语音残留信号后，对语音残留信号进行分流，得到多个子语音残留信号（S101）；基于预设的补偿配置，获取各子语音残留信号的补偿信息（S102）；向解码器发送包括各子语音残留信号和对应的补偿信息的码流，该码流用于指示解码器根据各子语音残留信号和对应补偿信息进行解码（S103）。该方法可以有效提高语音编码器的抗丢包性能。还提供了一种语音信号处理系统、装置、计算机设备和存储介质。
Patent WO-2021047447-A1 (WO)
Inventor: ZHANG YIHUI
IPC: G06F17/10
Filed: 2020-09-04
Abstract: 本发明公开了一种电网振荡阻尼比计算方法，涉及电力系统运行与控制领域，通过电力系统振荡发生时，开始检测振荡周期、两个振荡极值点和振荡直流分量，然后根据两个振荡极值点和振荡直流分量计算振荡衰减时间常数，再通过振荡衰减时间常数和振荡周期计算振荡阻尼比。和现有的拟合方法相比，现有的拟合方法在未得到完整振荡波形情况下，不能进行振荡阻尼比的计算分析。而本发明专利提出的方法，在得到2个极值数据的情况下，就可完成振荡阻尼比计算，提高计算的快速性。
Patent WO-2022047766-A1 (WO)
Title: Dispositif électronique
Inventor: KODAMA KENICHIRO
IPC: H01Q23/00
Filed: 2020-09-07
Abstract: L'invention concerne un dispositif électronique (100) comprenant un premier circuit (110) fonctionnant sur un premier signal d'une première fréquence et un second circuit (120) fonctionnant sur un second signal d'une seconde fréquence. Le premier signal est différent du second signal, et le premier circuit (110) et le second circuit (120) partagent un premier composant (200). Le premier composant (200) fonctionne comme une antenne pour le second circuit (120), ce qui réduit l'espace occupé par une antenne dédiée ou indépendante et permet d'obtenir une taille plus petite et une meilleure conception industrielle pour le dispositif électronique (100).
Patent WO-2021120718-A1 (WO)
Title: 荧光滚筒模组、光源及投影机
Inventor: WANG QIANG
IPC: G03B21/20
Filed: 2020-09-10
Abstract: 一种荧光滚筒模组、光源及投影机，涉及投影机技术领域，荧光滚筒模组具有光传导工位和波长转换工位；荧光滚筒模组被配置为通过旋转以在光传导工位和波长转换工位之间切换；荧光滚筒模组的旋转轴线沿竖直方向延伸。该荧光滚筒模组可以降低光损耗，提高转换效率。
Patent WO-2021037278-A1 (WO)
Title: A-d-a conjugated molecule, preparation method therefor, use thereof in organic solar cell, and organic solar cell
Inventor: LIU TAO
IPC: H01L51/42
Filed: 2020-09-11
Abstract: Provided are an A-D-A conjugated molecule, a preparation method therefor, an organic solar cell, and the use of the A-D-A conjugated molecule in an organic solar cell. The A-D-A conjugated molecule has the following general structure: (I), wherein R 1  is 4-alkylphenyl, 4-alkoxyphenyl, 4-alkylthiophenyl, 4-alkylthienyl, 4-alkoxythienyl, 4-alkylthiothienyl, 4-alkylselenophenyl, or 4-alkylthioselenophenyl; Ar is a thiophene group, a thiophene derivative group, a fused-dual-thiophene group, a fused-dual-thiophene derivative group, a fused-triple-thiophene group, a fused-triple-thiophene derivative group, a benzodithiophene group, a benzodithiophene derivative group, a pyrrolodithiophene group, a pyrrolodithiophene derivative group, a pentane fused-dual-thiophene group, or a pentane fused-dual-thiophene derivative group; and EG is a capping group. The present invention has a stronger light absorption capacity, a better charge transfer performance, and a suitable electronic energy level.
Patent WO-2022007202-A1 (WO)
Title: Zoom lens
Inventor: MATIKAINEN JARNO
IPC: G02B7/04
Filed: 2020-09-27
Abstract: The present invention relates to a zoom lens, which at least comprises a first lens group, a second lens group, and a shell. The first lens group and the second lens group are installed in the shell, and a first motor assembly is mounted in the shell, connected to the first lens group and used for driving the first lens group to move relative to the second lens group so as to change a focal length. According to the zoom lens provided by the present invention, the first lens group is driven by the first motor assembly, so that the costs are relatively low, the structure is relatively simple, the processing is relatively convenient, and the actual use requirements are better satisfied.
Patent WO-2022061925-A1 (WO)
Inventor: WANG TONGZHOU
IPC: G06F16/26
Filed: 2020-09-28
Abstract: The present invention provides a method and apparatus for generating a control chart of an automatic control system, and a computer readable medium. The method comprises: acquiring a knowledge graph of the automation control system, the knowledge graph recording at least one component, at least one data item and a control logic relationship between the component and the data item, which are included in the automation control system; generating at least two functional blocks connected with each other, wherein each functional block is used to implement at least one control policy included in the automatic control system, and the control policies implemented by each functional block constitute a control logic of the automatic control system; adding each functional block to the knowledge graph, and respectively connecting each functional block to an associated target data item; and according to the direction of data transfer between the functional blocks, connecting the target data items in the knowledge graph added with the functional blocks, to generate a control chart of the automatic control system. This solution enables engineers to quickly and accurately determine control logic relationships in an automatic control system.
Patent WO-2021098402-A1 (WO)
Inventor: LUO DONGHAO
IPC: G06K9/00
Filed: 2020-10-10
Abstract: An action recognition method. The method comprises: acquiring original feature sub-images of image data of each timing frame in different convolutional channels by means of a multi-channel convolutional layer; respectively taking each timing frame as a target timing frame, calculating a motion information weight of the target timing frame in each convolutional channel according to an original feature sub-image of the target timing frame in each convolutional channel and an original feature sub-image of the next timing frame in each convolutional channel, and acquiring a motion information feature image of the target timing frame in each convolutional channel according to the motion information weight; performing timing convolution on the motion information feature image of the target timing frame in each convolutional channel to obtain a timing motion feature image of the target timing frame in each convolutional channel; and recognizing the action type of a moving object in the image data of the target timing frame according to the timing motion feature image of the target timing frame in each convolutional channel.
Patent WO-2021098415-A1 (WO)
Inventor: HUANG GUOGANG
IPC: H04L45/243
Filed: 2020-10-14
Abstract: The present invention relates to the technical field of communications. Disclosed are multi-band communication and interface parameter update methods, and related devices. The multi-band communication method comprises: when an AP device authenticates a STA device, the AP device sends a target packet to the STA device, the AP device comprising multiple APs, and the multiple APs working on different frequency bands, wherein the target packet comprises multiple multi-band elements, the multiple multi-band elements have one-to-one correspondence to the multiple APs, and each of the multiple multi-band elements comprises frequency band information of the corresponding AP, and the multiple multi-band elements are used for instructing the STA device to associate with the multiple APs and derive secret keys. The present application enables the STA device to quickly switch between the multiple APs.
Patent WO-2021120819-A1 (WO)
Title: 弹窗处理方法、装置、计算机设备及存储介质
Inventor: LU ZHIPENG
IPC: G06Q30/02
Filed: 2020-10-19
Abstract: 本申请公开一种弹窗处理方法、装置、计算机设备及存储介质。该弹窗处理方法包括监听在线用户触发的功能模块的调用事件，获取功能模块的触发数据；当功能模块为新功能模块，判断触发数据是否满足初始弹窗事件的触发条件；当触发数据满足初始弹窗事件的触发条件时，弹出功能模块对应的评价弹窗；当不满足初始弹窗事件的触发条件时，判断触发数据是否满足弹窗概率事件的触发条件；当满足弹窗概率事件的触发条件时，弹出功能模块对应的评价弹窗。本申请还涉及区块链技术，根据评价弹窗接收到的评价数据可存储于区块链中。该方法在保证评价数据的数据量的基础上，不会影响用户使用。
Patent WO-2021073639-A1 (WO)
Inventor: GOU GALIAN
IPC: B01J23/89
Filed: 2020-10-19
Abstract: A selective hydrogenation method for an acetylene post-hydrogenation process using crude hydrogen as hydrogen source. Hydrogen used in a hydrogenation reaction is crude hydrogen, the content of H 2  is 20 to 50 v/v%, and the content of CO is 0.1 to 1 v/v%, the process conditions are: the reactor inlet temperature is 55 to 130°C, the pressure is 1.5 to 3.0 MPa, and the gas volume space velocity is 1500 to 600 h -1 ; the catalyst carrier is alumina having a bimodal pore distribution structure, in which the pore diameter of the micropore is 15 to 50 nm, and the pore diameter of the macropore is 80 to 500 nm; the catalyst at least contains active components Pd, Ni and Cu, and on the basis of the mass of the catalyst being 100%, the content of Pd is 0.06 to 0.1%, the content of Ni is 0.5 to 5%, and the content of Cu : Ni is 0.1 to 1:1. The selective hydrogenation method has excellent anti-coking properties.
Patent WO-2022007235-A1 (WO)
Title: Edge-cloud computing system for pure electric vehicle
Inventor: CHEN TAO
IPC: B60L3/12
Filed: 2020-10-21
Abstract: An edge-cloud computing system for a pure electric vehicle, comprising a cloud computing end (200) and at least two edge ends (100). The edge ends (100) are used for obtaining vehicle information and preprocessing the vehicle information to generate multi-physical domain information; the cloud computing end (200) is connected to the edge ends (100), used for controlling each edge end (100), and further used for performing fusion and management on the multi-physical domain information. In order to ensure stable operation of an electric vehicle, the edge ends (100) are applied to monitoring the electric vehicle from three positions, i.e., a vehicle motion state, a vehicle battery, and a vehicle motor, different sensors (111, 121, 131, 141) are provided to generate redundant information, thereby increasing the accuracy degree of monitoring. Two layers of information processing structures are provided, computing resources of the edge ends (100) are regulated by applying the cloud computing end (200), and the multi-physical domain information is fused and managed, thereby better controlling overall information and ensuring the stability of the overall system.
Patent WO-2021238035-A1 (WO)
Inventor: DAI GAOXU
IPC: A61B17/04
Filed: 2020-10-21
Abstract: 一种修复组件和修复组件植入装置，该修复组件包括第一植入体（110）、第二植入体（120）和夹线器（130），第一植入体（110）和第二植入体（120）分别包括各自的第一紧固钉（101）、第二紧固钉（102）、横管（103）和锁紧线（104），第一紧固钉（101）和第二紧固钉（102）通过连接线（105）与横管（103）连接，锁紧线（104）连接于横管（103），夹线器（130）配置成能夹紧锁紧线（104）。
Patent WO-2021037286-A1 (WO)
Title: Image processing method, apparatus, and device, and storage medium
Inventor: LI ZHAOZAO
IPC: H04N5/45
Filed: 2020-10-23
Abstract: An image processing method, apparatus, and device, and a storage medium. The method comprises: obtaining a first image and a second image, the first image and the second image respectively being captured and transmitted by a first lens and a second lens on an unmanned aerial vehicle; obtaining the field of view information currently held by the first lens and the second lens; according to the field of view information and the reference display information configured by the first lens, determining the target display information of the second lens. With such an image processing mode, picture-in-picture display mode can be exhibited in a dual-lens camera according to a precise ratio, and the problem of picture-in-picture not being displayed at the real-view ratio due to lens, such as parameter changes in lens field of view, can be avoided. Superposition at a consistent ratio for images in picture-in-picture can be achieved.
Patent WO-2021169348-A1 (WO)
Inventor: XU JIANGANG
IPC: H05B45/325
Filed: 2020-10-28
Abstract: Provided in the present invention is a drive circuit with an intelligent induction function, relating to the technical field of lamp drive circuits. The drive circuit comprises an EMC device, a power conversion circuit, a rectifier filter circuit, a control circuit connected to the power conversion circuit, a first power supply module supplying power to the control circuit, a second power supply module supplying power to an inductor, an optocoupler, and the inductor. The drive circuit further comprises an MOS transistor, wherein a gate electrode of the MOS transistor is connected to an output pin of the inductor, and a drain electrode of the MOS transistor is connected to an anode of the optocoupler. According to the present invention, PWM signals output by a single chip microcomputer inside an inductor are directly transmitted to a control circuit after being isolated by an optocoupler in order to realize the power adjustment of a power supply, and to also realize the isolation of an inductor line, an input end and a load end, thereby omitting two circuits, namely, a circuit for converting the PWM signals into 0-10 V signals in the inductor, and a circuit for converting the 0-10 V signals into the PWM signals in the power supply. The present invention is beneficial to the stability and reliability of a dimming circuit, and realizes the isolation of an inductor dimming line, and also has the characteristics of low costs and high reliability.
Patent WO-2021129129-A1 (WO)
Title: 一种带消毒功能的理发剪
Inventor: YU GUANGMEI
IPC: A45D27/46
Filed: 2020-10-29
Abstract: 一种带消毒功能的理发剪，包括机身(1)以及安装在机身顶部的刀头(2)；机身内设有电源组件(3)、电机(4)，电机的输出端伸出至机身顶部外，并与刀头联动配合；机身与刀头之间还设有消毒组件(5)。该理发剪能够实现刀头消毒，不仅更加安全卫生，而且与理发剪本身结合为一体，便于携带，方便消毒操作。
Patent WO-2021088826-A1 (WO)
Title: Device for evaluating neurovirulence of mumps virus
Inventor: TIAN DAYONG
IPC: G01N21/84
Filed: 2020-11-03
Abstract: A device for evaluating the neurovirulence of a mumps virus, comprising: (I) a virus inoculation module, which is used for performing virus inoculation of a mumps virus to be evaluated on the lateral ventricle of a rat; (II) a processing module, which is used for performing vibration slicing on the fixed rat brain; (III) an imaging module, which is used for scanning and imaging the obtained mouse brain slices; and (IV) an analysis module, which is used in the obtained imaging for calculating a neurovirulence index by using a formula I: the neurovirulence index = S1/S0×100 (formula I) according to the cross-sectional area S1 of a cavity formed by hydrocephalus in the longitudinal section of the rat brain and the total cross-sectional area S0 of the rat brain. Multiple results show that the results are stable, repeatability is high, and a wild strain may be distinguished from a vaccine strain. In addition, relative to a current monkey body neurovirulence model, animal costs and difficulty of operation are greatly reduced.
Patent WO-2021169447-A1 (WO)
Title: 摄像镜头
Inventor: YAMAZAKI KAORU
IPC: G02B13/00
Filed: 2020-11-26
Abstract: 一种低高度、广角且具有良好的光学特性的利用6片透镜而构成的摄像镜头(LA)。摄像镜头(LA)从物侧起依次配置有具有正屈折力的第一透镜(L1)、具有负屈折力的第二透镜(L2)、具有正屈折力的第三透镜(L3)、具有负屈折力的第四透镜(L4)、具有正屈折力的第五透镜(L5)以及具有负屈折力的第六透镜(L6)，且满足给定的关系式。
Patent WO-2022120777-A1 (WO)
Inventor: CUI QINGGUO
IPC: A41D1/06
Filed: 2020-12-11
Abstract: La présente invention concerne une culotte de correction de la forme du corps, comprenant : une section de ceinture, pouvant être fixée dans la zone de taille (A) du corps humain ; une section d'entrejambe, pouvant être fixée dans la zone d'entrejambe du corps humain, la section d'entrejambe étant reliée à la section de ceinture ; et des sections de cuisse ayant une certaine élasticité, qui peuvent être reliées aux zones de cuisse correspondantes du corps humain. Les sections de cuisse sont étirées obliquement vers l'intérieur et vers le haut à partir des zones de cuisse du corps humain et sont reliées à la section d'entrejambe ou à la section de ceinture ; des forces de traction exercées obliquement vers l'intérieur et vers le haut pour guider les fémurs vers l'intérieur sont appliquées aux fémurs du corps humain par l'intermédiaire des sections de cuisse. La culotte de correction de la forme du corps est capable de corriger entièrement les principaux symptômes des jambes arquées ainsi que la déformation concomitante associée et, à l'aide d'une analyse globale de l'application de la force, empêche les symptômes de s'aggraver mutuellement au cours d'un processus de correction, évite la nécessité d'une intervention chirurgicale et minimise la souffrance du patient.
Patent WO-2021174962-A1 (WO)
Title: 文档图像方向识别及模型的训练
Inventor: ZHOU KAI
IPC: G06K9/62
Filed: 2020-12-18
Abstract: 本申请提供了一种方法。所述方法包括：根据注意力机制，生成训练图像的注意力裁剪图像和注意力抹除图像，以及分别确定训练图像、注意力裁剪图像以及注意力抹除图像各自的注意力融合特征；根据各注意力融合特征分别识别相应图像的方向，得到相应的识别结果；根据各识别结果计算交叉熵损失值，以及根据各注意力融合特征计算中心损失值，根据交叉熵损失值和中心损失值对文档图像方向识别模型进行参数优化或停止训练。
Patent WO-2022134115-A1 (WO)
Inventor: LI SHUYI
IPC: G06F16/44
Filed: 2020-12-26
Abstract: 一种数据处理装置(300)，包括：选项组(101)的可视化组件(700)和至少一个图表组件(600)。选项组(101)包括第一选项(101A)和第二选项(101B)。至少一个图表组件(600)与选项组的第一选项(101A)具有订阅关系，至少一个图表组件(600)被配置为响应于选中第一选项(101A)的操作，以显示属于至少一个图表组件(600)的第一图表；至少一个图表组件(600)与选项组(101)的第二选项(101B)具有订阅关系，至少一个图表组件(600)还被配置为响应于选中第二选项(101B)的操作，以显示属于至少一个图表组件(600)的第二图表。
Patent WO-2022048075-A1 (WO)
Inventor: LIU RONG
IPC: H04W4/80
Filed: 2020-12-26
Abstract: A clock synchronization method and apparatus, and a storage medium. In one measurement, a first moment is a moment at which a slave device sends a clock synchronization request, a second moment is a moment at which a master device receives the clock synchronization request, and a third moment is a moment at which the slave device receives a clock synchronization response, the clock synchronization response carrying the second moment. The method comprises: acquiring a time interval between two measurements in which the time differences between first moments and third moments are less than a preset time difference, wherein the time interval is determined according to the first moments and/or the third moments in the two measurements; if the time interval is greater than a preset time interval, determining the clock skew of a slave device relative to a master device according to the time interval and the third moments in the two measurements, wherein the preset time interval is determined according to a preset clock skew measurement precision; and determining a synchronous clock of the master device according to a system clock and the clock skew of the slave device. Precise clock synchronization is performed during wireless transmission.