baber/WOPTO huggingface dataset:
Patent WO-2021031598-A1 (WO)
Title: Self-adaptive adjustment method for video chat window position, and display device
Inventor: JIA QIYAN
IPC: H04N5/00
Filed: 2020-04-24
Abstract: Provided are a display device, and a position self-adaptive method for a video chat window. The method comprises: when a video chat window floats on a playing picture for display, acquiring a video chat window position and a focal point position when an instruction for moving a focal point is received; determining, according to the video chat window position and the focal point position, whether the video chat window blocks the focal point; and if it is determined that the video chat window blocks the focal point, moving the video chat window from the current position to a first target position.
Patent WO-2020221274-A1 (WO)
Title: Method for treating cough by using diaminopyrimidine compound
Inventor: ZHAO YANPING
IPC: A61K31/506
Filed: 2020-04-29
Abstract: A method for treating, suppressing or alleviating cough or cough impulse in the field of biomedicine, comprising: administering to a subject in need thereof a therapeutically effective amount of a diaminopyrimidine compound of formula (I) or a pharmaceutically acceptable salt, ester, stereoisomer, polymorph, solvate, N-oxide, isotope-labeled compound, metabolite or prodrug thereof.
Patent WO-2021217629-A1 (WO)
Inventor: HAO JINPING
IPC: H04W64/00
Filed: 2020-04-30
Abstract: The present application relates to the technical field of communications, and provides a positioning method and apparatus. In the method, an LMC sends to a core network element a registration request used for requesting to register to the core network element, and the core network element sends a registration response, which comprises first indication information, to the LMC according to the registration request; the first indication information is used for indicating the positioning type supported by the LMC or is used for indicating whether the LMC supports a first positioning type. Thus, a core network indicates the positioning type supported by an LMC during the process of LMC registration so that a subsequent LMC can execute a corresponding positioning function.
Patent WO-2020238692-A1 (WO)
Title: NOVEL MUTANT OF αO-CONOTOXIN PEPTIDE GEXIVA, PHARMACEUTICAL COMPOSITION THEREOF AND USE THEREOF
Inventor: LUO SULAN
IPC: A61P25/04
Filed: 2020-05-19
Abstract: Provided are a novel mutant of αO-conotoxin peptide GeXIVA, a pharmaceutical composition thereof and a use thereof. The amino acid sequence of the novel mutant is obtained by removing one or more amino acids in a parent sequence SEQ ID NO: 1, 62 or 63 or by replacing said acids with the same number of L-type or D-type amino acids. The novel mutant has the activity of blocking α9α10 nAChR, and may be used to prepare drugs such as analgesics, psychiatric disease and cancer-related treatment drugs, and neuroscience tool drugs.
Patent WO-2021169068-A1 (WO)
Inventor: HSU WEI YOU
IPC: G06F3/041
Filed: 2020-05-26
Abstract: Disclosed are a touch-control panel, a touch-control panel manufacturing method and a touch-control panel apparatus. A peripheral lead in the touch-control panel comprises a conductive nanostructure and a film layer externally arranged on the conductive nanostructure, and the interface between the conductive nanostructure and the film layer is substantially provided with a coating structure.
Patent WO-2020238987-A1 (WO)
Title: Massage adjustment structure and massage apparatus
Inventor: TANG GUOYUN
IPC: A61H15/00
Filed: 2020-05-27
Abstract: A massage adjustment structure and a massage apparatus, the massage adjustment structure comprising: a guide mechanism (10) comprising a sliding connecting member (12); a massage mechanism (20) comprising a massage bracket (21), a massage head (22), and a drive rod (23), a first end of the massage bracket (21) being hinged to the drive rod (23), and a second end thereof being provided with a sliding connecting groove (201), the sliding connecting groove (201) extending in the direction of the drive rod (23), and the sliding connecting member (12) being slidably connected in the sliding connecting groove (201); and a drive mechanism (30) used for driving the drive rod (23) to make circular movements and drive the sliding connecting member (12) to make reciprocal movements; the drive rod (23) drives the first end to make circular movements, and the sliding connecting member (12), by means of the sliding connecting groove (201), can drive the second end to make reciprocal movements whilst the first end makes circular movements, and the partial direction of the reciprocating movements does not pass through the area defined by the circular movements of the first end. The second end of the massage bracket (21) of the massage adjustment structure can swing relative to the first end in the circumferential direction of the area defined by the relative circular movements, and therefore the massage bracket (21) has a greater range of motion, implementing large-range massage.
Patent WO-2021008252-A1 (WO)
Inventor: SHI LEI
IPC: G06K9/00
Filed: 2020-05-30
Abstract: The present application relates to a method and an apparatus for recognizing the position of a person in an image on the basis of a neural network, a computer device and a storage medium. The method comprises: acquiring a monitoring video file to be recognized, and pre-processing said monitoring video file to obtain a video image to be recognized; determining the image type of said video image; when the image type is a color image, recognizing key human body points in said video image by means of a human body posture model obtained by training, and determining position information of a person in said video image on the basis of the recognized key human body points; and when the image type is a night vision image, recognizing the position information of the person in said video image by means of a lightweight object detection model obtained by training. Said method improves the working efficiency.
Patent WO-2020253696-A1 (WO)
Inventor: LIAN LEI
IPC: C07D213/60
Filed: 2020-06-17
Abstract: The invention belongs to the technical field of pesticides, and specifically relates to a substituted pyridinemethylene pyridinecarboxylate derivative, a preparation method therefor and a herbicidal composition and the use thereof. The substituted pyridinemethylene pyridinecarboxylate derivative is as represented by general formula I, wherein A represents an alkyl, a halogenated alkyl, an alkoxy, an alkylthio, halogen, cyano, an alkenyl or an alkynyl; B represents an unsubstituted or substituted phenyl; C represents hydrogen, halogen, an alkoxy, an alkyl, a halogenated alkyl, an alkenyl or an alkynyl; X represents NR 1 R 2 ; and Y represents an unsubstituted or substituted pyridyl. The compound can combat resistant weeds, has a better effect on broadleaf weeds and Cyperaceae weeds, and has a higher selection index with respect to rice.
Patent WO-2020253818-A1 (WO)
Title: 一种大直径薄壁件的加工工艺
Inventor: CHEN SHAOFENG
IPC: B23P15/00
Filed: 2020-06-19
Abstract: 一种大直径薄壁件的加工工艺，所述加工工艺的步骤为：S1、选取尺寸合适的原料；S2、加工内孔(5)；S3、加工外形；S4、时效热处理；S5、半精加工内孔(5)及部分外形；S6、半精加工部分外形；S7、自然时效处理；S8、精加工内孔(5)以及第二端部(8)；S9、精加工第二外圆(2)以及工艺台阶(6)；S10、精加工第一外圆(1)；S11、加工成型法兰(3)；S12、加工成型多个凸台(4)。该加工工艺设计稳定的工艺路线来控制变形，减少装夹次数，缩短加工时间，提高加工效率和保证产品质量；通过内孔(5)定位完成所有特征的一次性加工，保证了产品变形在可控范围之内；利用合理的工艺参数实现准确的生产指导工作，摆脱了专人专机的局限性，较好地完成了自动化生产。
Patent WO-2021253544-A1 (WO)
Inventor: WU CHAO
IPC: G16B50/00
Filed: 2020-07-13
Abstract: 本发明提供以87个基因作为生物标志物预测细胞增殖活性的模型。细胞增殖基因集合表达水平与细胞的增殖活性正相关。本发明提供了一套无需体外培养对细胞增殖活性进行评估的方法。结合单细胞测序技术，可以快捷简便的测定体内各细胞类型的增殖活性，判断癌症组织中是否存在显著增殖的正常细胞。
Patent WO-2021017889-A1 (WO)
Inventor: LIANG HAOWEI
IPC: G06F3/048
Filed: 2020-07-17
Abstract: 本申请公开了一种应用于电子设备的视频通话的显示方法，该方法包括：在电子设备显示应用界面时，接收到了视频通话请求。在用户接听了视频通话请求之后，电子设备将全屏显示通话界面。在这种情况下，若接收到用户对电子设备输入的弯折操作，电子设备在显示屏的第一屏上显示通话界面，在显示屏的第二屏上显示接听视频通话之前，电子设备显示的应用界面。通过这种方式，可以方便用户在视频通话时，打开接听视频来电之前，电子设备显示的应用界面，提升用户的操作体验。
Patent WO-2021013087-A1 (WO)
Inventor: XU YANG
IPC: B08B11/02
Filed: 2020-07-17
Abstract: 一种自动化超声波化妆刷清洗机，包括化妆刷固定架（100）、转轴（200）、清洗池（300）和底座（400），其中清洗池（300）设置在底座（400）的顶部，转轴（200）设置在清洗池（300）的顶部，化妆刷固定架（100）设置在转轴（200）的顶部，化妆刷固定架（100）包括六个夹子（102），六个夹子（102）固定在圆管上（105），并通过圆管（105）连接在一起，圆管（105）的底部设置有第一磁铁（104）；该自动化超声波化妆刷清洗机还包括棘轮机构，棘轮机构包括从上至下依次设置的固定架（501）、转轴（502）、清洗池（503）和底座（504）组成清洗机主体，清洗池（503）内部设有超声波模块（511），转轴（502）包括圆柱体，圆柱体内部固定连接有电机（505），圆柱体内部还设有棘齿组件（600），且棘齿组件（600）安装在电机（505）上并与带有化妆刷夹具的固定架（501）传动连接。
Patent WO-2021073199-A1 (WO)
Inventor: CHENG ZHONGFA
IPC: C07F9/38
Filed: 2020-07-30
Abstract: A continuous production method for hydroxyethylene diphosphonic acid crystals, the specific operation method comprising: performing preheating and gas-liquid separation on a liquid product of hydroxyethylene diphosphonic acid with an active content of 50-65% and then continuously pumping same into a distilling still at a constant speed; when the active content of the material is greater than or equal to 70% after being concentrated by distillation, condensing the high-temperature material and automatically transferring the material sequentially from the first stage to n-th stage crystallization kettles connected in series; under the conditions of stirring and natural cooling, performing crystallization stage by stage; then, lowering the temperature by circulating condensation in the n-th stage crystallization kettle and keeping the system temperature at 20±2 degrees Celsius; and after fully crystallizing, separating and drying crystals to obtain hydroxyethylene diphosphonic acid crystal products with an active content greater than or equal to 98%.
Patent WO-2021052028-A1 (WO)
Title: Image color migration method, apparatus, computer device and storage medium
Inventor: FENG CHAOWEI
IPC: G06T7/90
Filed: 2020-07-30
Abstract: The present application relates to an image color migration method, an apparatus, a computer device and a storage medium. The method comprises: extracting a color value of a main color of an image to be converted; determining a migration vector adopted when the target color is migrated to the image to be converted according to the color value of the main color of the image to be converted and the color value of the target color; and migrating the target color to the image to be converted according to the migration vector. The present method can realize color migration without reference pictures.
Patent WO-2022021312-A1 (WO)
Inventor: ZHAO ZHENSHAN
IPC: H04W52/02
Filed: 2020-07-31
Abstract: Provided are a wireless communication method, a terminal device and a network device. For a service sent in a multicast or broadcast manner, the terminal device can perform uplink feedback according to DCI, so as to improve the reliability of multicast or broadcast transmission. The wireless communication method comprises: a terminal device receiving first DCI, wherein the first DCI is used for scheduling a PDSCH that carries a first-type service; and the terminal device performing uplink feedback, for the first-type service, according to the first DCI, wherein the first-type service is sent in a multicast or broadcast manner.
Patent WO-2021164210-A1 (WO)
Title: Application of gallic acid derivative in prevention and treatment of atherosclerosis disease
Inventor: XING SHU
IPC: A61K45/06
Filed: 2020-08-04
Abstract: Provided is an application of a gallic acid derivative in prevention and treatment of an atherosclerosis disease, relating to the technical field of biological medicines. By means of research, it is discovered that the gallic acid derivative, particularly ethyl gallate, can have the function of preventing and treating atherosclerosis by inhibiting lipid deposition and oxidization, macrophage foaming transformation, macrophage lipid efflux, and macrophage and intravascular endothelial cell activation and apoptosis. The present invention develops a new pharmaceutical use for the gallic acid derivative, particularly for ethyl gallate, also lays an experimental foundation for the development of a relevant drug for efficiently preventing and treating atherosclerosis, and provides a new visual field.
Patent WO-2022007118-A1 (WO)
Title: Seat arrangement uniformity measurement system and method
Inventor: ZHOU AILI
IPC: G06T7/00
Filed: 2020-08-18
Abstract: A seat arrangement uniformity measurement system and method, comprising: a content capturing mechanism located on a housing of a mobile terminal and used for executing an image content capturing action on a conference room layout scene that the content capturing mechanism faces so as to obtain a corresponding layout scene image, the content capturing mechanism of the mobile terminal directly facing the central position of a conference table to be analyzed; and a classification and identification device used for matching the layout scene image and the shape of each type of reference seat so as to obtain an image region where each seat object in the layout scene image is located and a corresponding seat type. The seat arrangement uniformity measurement system and method are reasonable in design and wide in application. Moreover, according to the present invention, whether seats in a conference room need to be rearranged or not can be cooperatively determined on the basis of different related parameters of the seat distribution condition in the conference room, so that reference data of conference layout can be given quickly and conveniently.
Patent WO-2021237969-A1 (WO)
Title: Inflatable pool and fabrication method therefor
Inventor: TAI XUMING
IPC: E04H4/04
Filed: 2020-08-31
Abstract: The present invention relates to the technical field of inflatable pools, and disclosed are an inflatable pool and a fabrication method therefor. At least two inner wall joints are provided on the inner wall of the inflatable pool along a direction perpendicular to the bottom of the pool. Once the inflatable pool is inflated, the inner wall forms corners at the inner wall joints. At least one outer wall joint is formed on the outer wall along the direction perpendicular to the bottom of the pool. The inflatable pool provided by the present invention is provided with at least two inner wall joints and at least one outer wall joint on the inner wall and the outer wall respectively, so that the inner wall forms corners after being inflated to form a polygonal inflatable pool, which is not prone to leaking. Moreover, the thickness of the inner wall and the outer wall may be increased to more than 10 cm as needed, thus improving the thermal insulation performance.
Patent WO-2021068701-A1 (WO)
Inventor: LIU JUNBIN
IPC: G01C21/00
Filed: 2020-09-08
Abstract: 激光地图更新方法、机器人和集群机器人系统；方法包括：根据激光点云与地图激光点云的拼接结果确定待更新点云，地图激光点云为多个与激光点云有特定关系的点云的组合（10）；将待更新点云的信息更新到激光地图（20），如果更新后的激光地图和原始地图比对的差异超过预设的第一阈值，则放弃更新后的激光地图，否则保留更新后的激光地图（30）；更好地保证了更新后的地图与更新之前的地图不存在旋转平移与缩放，为上层业务逻辑正常运行打下基础。
Patent WO-2022052136-A1 (WO)
Inventor: HE XIANWEN
IPC: B32B27/08
Filed: 2020-09-15
Abstract: Disclosed in the present invention are a chemical fiber filament and a dyeing process therefor. The chemical fiber filament comprises fiber cloth a and fiber cloth b, a skin-friendly fiber layer is provided between the fiber cloth a and the fiber cloth b, the skin-friendly fiber layer is a wheat fiber layer, the fiber cloth a and the fiber cloth b are made of chemical fiber filaments, and the wheat fiber layer is fixed between the fiber cloth a and the fiber cloth b by means of chemical fiber filament yarns. The outer sides of the fiber cloth a and the fiber cloth b are respectively coated with a polyvinyl chloride layer. The chemical fiber filament and the dyeing process therefor in the present invention have the beneficial effects that: the process is stable, so that the final performance of a fabric is relatively stable; the dyeing process is efficient and simple, is convenient to operate, and can be popularized and used; and due to the design of the wheat fiber layer, the later hand feeling is soft, the warm-keeping properties and the skin friendliness are excellent, the wear comfort is improved, the combination degree is high, and the wear comfort of chemical fiber cloth is improved.
Patent WO-2022032795-A1 (WO)
Title: Cleaning device and method for edible bird's nest
Inventor: YU DEJUN
IPC: B08B5/04
Filed: 2020-09-16
Abstract: A cleaning device and method for an edible bird's nest. The cleaning device comprises a power box (1) and a pair of vacuum tweezers (2); the power box (1) comprises a box body (3), a water pump (4), and a vacuum pump (5); the water pump (4) and the vacuum pump (5) are respectively provided in the box body (3); the pair of vacuum tweezers (2) comprises a first clamping piece (6) and a second clamping piece (7) which are matched with each other to achieve a clamping action; the first clamping piece (6) is connected to the water pump (4) by means of a water pipe; the second clamping piece (7) is connected to the vacuum pump (5) by means of a gas pipe (17); and the first clamping piece (6) and the second clamping piece (7) are respectively provided with a water outlet (8) and a suction port (9) which are oppositely provided. According to the cleaning device and method, the whole device uses the pair of vacuum tweezers (2) and the power box (1) that are connected to each other; the pair of vacuum tweezers (2) comprises the first clamping piece (6) for spraying water and the second clamping piece (7) for performing vacuum suctioning on impurities; in an impurity removal process, the first clamping piece (6) wets the edible bird's nest, the impurities are removed by means of tips (13) on pointed tip sleeves (12) of the first clamping piece (6) and the second clamping piece (7), and the impurities are suctioned away by means of the suction port (9), so that wetting and impurity removal are synchronously performed, production efficiency is effectively improved, production costs are reduced, and nutrient substances can be kept and prevented from losing.
Patent WO-2021083369-A1 (WO)
Inventor: ZHANG PENG
IPC: A61L27/58
Filed: 2020-10-30
Abstract: Disclosed are a magnesium strontium-silicon phosphate salt material, a preparation method therefor, and a structurally controllable porous bone repair composite scaffold material comprising the magnesium strontium-silicon phosphate salt material. The magnesium strontium-silicon phosphate salt material has the structural formula of Sr 5-x Mg x (PO 4 ) 2 SiO 4 , with 0<x<5, wherein a synergistic effect is present between the magnesium ions and strontium ions, and the combined action of the two can promote the proliferation and differentiation of osteoblasts, and same is beneficial for executing the functions of osteogenesis and angiogenesis during bone repair, and reduces the time required for repairing bone defects.
Patent WO-2021114982-A1 (WO)
Title: 一种连续灌药注射器
Inventor: DING PENG
IPC: A61D7/00
Filed: 2020-11-09
Abstract: 一种连续灌药注射器，包括小手柄（21）、大手柄（11）和针壳（9），针壳（9）的前端设有用于连接投药管组件的连接头（31）所组成的手枪式结构，其中针壳（9）和大手柄（11）的上部通过连接件（10）相连，大手柄（11）的下部和小手柄（21）内安装同一个主弹簧（22）并通过连接销（23）及销盖（24）在交接处相连，针壳（9）和大手柄（11）上部内分别设有活塞组件和活塞杆（20），活塞杆（20）的后端设有槽（32），小手柄（21）的另一端嵌入槽（32）中，对应该端小手柄（21）后方的大手柄（11）上部配设有剂量调节螺母（15）和螺纹，活塞杆（20）远离活塞组件端设置有连接接头（33），连接接头（33）上连接有吸液装置。该连续灌药注射器具有方便吸液装置安装、连接稳定、密封性好、注射使用方便、灌注效率高的优点。
Patent WO-2021248797-A1 (WO)
Inventor: LIU SHENGMING
IPC: G05D1/02
Filed: 2020-11-10
Abstract: A B-spline curve-based path planning method, comprising: selecting data points according to acquired station coordinates, the number of selected data points being at least the order of a B-spline plus 1 (S01); according to the coordinates of the selected data points, obtaining control points by calculation (S02); and obtaining a B-spline parameter equation by calculation according to the control points, and using the B-spline parameter equation to represent a planned path (S03). Data points can be dynamically selected according to B-spline path dynamic planning, the number of selected data points is small, control points can be obtained by calculation according to data points, and the calculation process is simple. The vehicle speed is adjusted according to a curvature, the angular rate is adjusted according to the vehicle speed of a vehicle, a PID control method is used, a posture error is eliminated, and a robot is controlled to move according to a desired path.
Patent WO-2022032903-A1 (WO)
Title: 一种手机壳生产用打磨装置
Inventor: Jin Zheyun
IPC: B24B19/00
Filed: 2020-11-12
Abstract: 一种手机壳生产用打磨装置，包括底座（1），所述底座（1）内腔的两侧均设置有隔板（2），所述隔板（2）的顶部与底部均与底座（1）的内壁固定连接，所述底座（1）内腔的底部固定连接有第一电机（3），所述第一电机（3）输出端的两侧均固定连接有螺纹杆（4），两个螺纹杆（4）相反的一侧均与隔板（2）活动连接。通过设置底座、隔板、第一电机、螺纹杆、螺纹套、调节板、调节槽、调节轮、支撑杆、放置板、固定杆、第二气缸、夹持板、吸尘罩、除尘箱、风机、滤芯、第三气缸、清洁毛刷、收纳壳和挡板，解决了现有的手机壳生产用打磨装置固定不够稳固和没有粉尘收集功能的问题，该手机壳生产用打磨装置，具备固定稳固和粉尘收集的优点，值得推广。
Patent WO-2022104756-A1 (WO)
Inventor: TAN YING
IPC: A24F40/10
Filed: 2020-11-20
Abstract: 一种电子烟，包括：壳体（1）、电源（2）、电路板（3）、烟弹（4）和烟嘴（5）；电源（2）与电路板（3）连接，电路板（3）与烟弹（4）连接；烟嘴（5）可插拔式与壳体（1）连接，或者，烟嘴（5）可插拔式与烟弹（4）连接，烟弹（4）可插拔式的设置在壳体（1）内。电子烟兼具干烧烤型和烟油型两种类型，用户能够灵活替换，提升用户体验，同时干烧烤型采用红外发热管对烟进行发热，提高发热效率，受热均匀。
Patent WO-2021104335-A1 (WO)
Title: 一种数据传输方法及其装置
Inventor: ZHOU JUNPING
IPC: H04L12/803
Filed: 2020-11-25
Abstract: 本申请实施例公开了一种数据传输方法及其装置，该方法可以应用于支持本地分流的场景，该方法包括：接收来自终端设备的上行数据包，并确定该上行数据包对应的会话信息；在该上行数据包对应的会话信息满足边缘转发条件的情况下，将该上行数据包发送至边缘网关。通过实施本申请实施例，有利于减少边缘网关处理的数据流量。
Patent WO-2021104359-A1 (WO)
Title: 列车管理方法及系统
Inventor: SHEN YAKUN
IPC: B61L27/04
Filed: 2020-11-26
Abstract: 一种列车管理方法、系统(500)，涉及轨道交通技术领域。其中，列车管理方法包括：接收列车监控系统(510)发送的控制指令，其中，控制指令包括指令类型信息(S101,S201,S301,S401)；若控制指令类型信息表征控制指令为休眠指令，则根据休眠指令进行休眠，休眠指令是列车监控系统(510)在确定列车(520)已在对应的停车位置停车时发送的(S102)；若控制指令类型信息表征控制指令为唤醒指令，根据唤醒指令进行唤醒，唤醒指令是列车监控系统(510)根据列车(520)的运行计划信息在指定时间生成的(S103,S402)。
Patent WO-2021151351-A1 (WO)
Title: Data processing method and apparatus, computer device, and storage medium
Inventor: YAN ZELONG
IPC: G16H50/30
Filed: 2020-12-08
Abstract: Provided are a data processing method and apparatus, a computer device, and a storage medium, which relate to the field of intelligent medical treatment. The method comprises: constructing a knowledge graph on the basis of diagnosis data of historical patients (S1); acquiring a first treatment sequence of each historical patient in the knowledge graph (S2); acquiring diagnosis data of a target patient, and generating a second treatment sequence of the target patient according to the diagnosis data (S3); matching the second treatment sequence with the first treatment sequences of all the historical patients in the knowledge graph, so as to acquire the diagnosis data of the historical patients matching the second treatment sequence (S4), such that the reliability and accuracy of the diagnosis data are improved; and using a classification model to classify the second treatment sequence, so as to acquire diagnosis probability data (S5), thereby providing a medical reference for the target patient/a doctor, such that more reliable and accurate parameter data can be provided for the target patient/doctor in conjunction with the diagnosis data obtained by matching and the diagnosis probability data.
Patent WO-2022110308-A1 (WO)
Inventor: Wu Taiyun
IPC: H04M1/03
Filed: 2020-12-09
Abstract: An audio playback method, comprising: upon detection of an audio signal to be played back, storing the audio signal in a preset buffer, and at the same time, transmitting the audio signal to an auxiliary loudspeaker, so as to cause the auxiliary loudspeaker to play back the audio signal (S101); in the process of storing the audio signal, starting a timer to start timing (S102); and when a timing duration reaches a preset delay duration, acquiring the audio signal from the preset buffer and transmitting same to a main loudspeaker, so as to cause the main loudspeaker to play back the audio signal (S103).