baber/WOPTO huggingface dataset:
Patent WO-2020056966-A1 (WO)
Inventor: ZHANG CHENGYU
IPC: A47J36/24
Filed: 2018-12-24
Abstract: A method for obtaining the internal temperature of food and a cooking utensil. The method is used for obtaining the internal temperature of food in the cooking utensil, and the cooking utensil comprises a control device. The method comprises: the control device performs calculation according to the surface temperature information of the food, the heat transfer characteristic information of the food, a heating duration, and the three-dimensional shape information of the food so as to obtain the internal temperature of the food. According to the method and the cooking utensil using the method, by detecting the surface temperature and shape of the food, and according to the heat transfer characteristic of the food, the internal temperature of the food is calculated, so that the operation steps during the cooking process of a user are reduced, and the result is accurate and reliable. The non-contact measurement mode is used, and thus the direct contact between the food and a sensing device is avoided, so that the cleanness of the food is guaranteed, and the food safety of the user is improved.
Patent WO-2020019672-A1 (WO)
Title: Method for optimizing chrominance of liquid crystal display screen, and liquid crystal display apparatus
Inventor: ZHENG YINGBO
IPC: G02F1/1333
Filed: 2018-12-28
Abstract: Provided are a method for optimizing the chrominance of a liquid crystal display screen, and a liquid crystal display apparatus. Starting from a combination mode of a liquid crystal panel and a backlight source, a means of optimizing the cross matching of assemblies between the liquid crystal panel and the backlight source is used, so that the chrominance tolerance range of white point chrominance coordinates of a finished product of an assembled liquid crystal display screen is x/y ± 0.015, thereby effectively improving the chrominance error of the assembled liquid crystal display screen, and the method can be achieved and implemented in automated production.
Patent WO-2019137260-A1 (WO)
Title: Electronic control assembly and air conditioner
Inventor: SHANG BIN
IPC: F24F11/89
Filed: 2018-12-29
Abstract: An electronic control assembly and an air conditioner. The electronic control assembly (1) comprises a base (2) and an electronic control box assembly (3). A position-limiting member (4) is disposed on the electronic control box assembly (3), and an installation member (5) is disposed on the base (2). The position-limiting member (4) cooperates with the installation member (5) to limit the movement of the electronic control box assembly (3) relative to the base (2) and to fix the electronic control box assembly (3) and the base (2). By means of the cooperation between the position-limiting member (4) and the installation member (5), the movement of the electronic control box assembly (3) can be limited relative to the base (2), and the electronic control box assembly (3) and the base (2) can be fixed. As a result, easy detachment of the electronic control assembly is facilitated, and the cost is reduced.
Patent WO-2020057013-A1 (WO)
Title: 一种卤代乙酰氯的光氧化制备方法
Inventor: HONG JIANGYONG
IPC: C07C51/58
Filed: 2019-09-02
Abstract: 本发明公开了一种卤代乙酰氯的光氧化制备方法，将卤代烷烃与氧源混合汽化后通入反应器进行光氧化反应得到卤代乙酰氯，光氧化反应的温度为5～60℃，物料停留时间为1～50s，氧源与卤代烷烃的摩尔比为0.1～5∶1，反应器内设置有石英冷阱，石英冷阱由石英内壳和石英外壳构成，石英内壳内部设置有光源，石英内壳和石英外壳之间构成双层冷阱夹套，双层冷阱夹套内充有循环流动的滤光液，该滤光液将所述光源产生的小于300nm波段的紫外光滤去。本发明具有工艺简单、收率高、安全环保、可连续化操作的优点。
Patent WO-2019134706-A1 (WO)
Inventor: LAI HUIQIANG
IPC: H04L12/40
Filed: 2019-01-08
Abstract: Embodiments of the present invention relate to a vehicle diagnostic method, device, apparatus, and system, and a connection diagnostic apparatus. The device comprises: a first interface interfacing module, configured to read a user operation on the interface, and convert the operation into a corresponding diagnostic instruction; a first protocol conversion module, configured to convert the diagnostic instruction into standard transmission data corresponding to the diagnostic instruction; and a first software interfacing module, configured to send the standard transmission data corresponding to the diagnostic instruction via a first communication unit. In the embodiments of the present invention, protocol conversion between a physical layer and a data link layer that consumes memory resources and processor resources is entirely or partially run on a vehicle diagnostic apparatus, such that a connection diagnostic apparatus only needs to run a part of the protocol conversion between the physical layer and the data link layer or does not need to run the protocol conversion between the physical layer and the data link layer. Thus, hardware performance requirements for the connection diagnostic apparatus are decreased, and hardware costs of the connection diagnostic apparatus are reduced.
Patent WO-2019154292-A1 (WO)
Title: Polishing tool
Inventor: ZHANG RUI
IPC: B24B23/02
Filed: 2019-02-01
Abstract: A polishing tool (100), comprising: a motor (15), comprising a stator assembly and a rotor assembly, wherein the rotor assembly comprises a rotor shaft capable of rotating about a motor axis (101); a housing (13), forming an accommodating space for accommodating at least part of the motor (15); a power source (11), for supplying power to the motor (15); and a pedestal (14), for installing an polishing means. The polishing tool (100) further comprises: an exocentric construction (18) for generating an eccentric force or an eccentric torque. The exocentric construction (18) is mounted to the rotor assembly such that the motor (15) can drive the pedestal (14) to conduct an eccentric motion. The polishing tool has lighter quality, smaller volume and lower no-load power.
Patent WO-2019158021-A1 (WO)
Title: Method and device for determining size of contention window
Inventor: LI YUAN
IPC: H04W74/08
Filed: 2019-02-03
Abstract: Embodiments of the present application provide a method and a device for determining the size of a contention window, relating to the field of communications. The method comprises: a first device transmitting, on a reference time unit, one or more data packets to one or more second devices, the one or more data packets occupying a first sub-band; the first device receiving one or more hybrid automatic repeat request (HARQ) responses fed back by the one or more second devices and corresponding to the one or more data packets; and the first device determining, according to the one or more HARQ responses, the size of a contention window of the first sub-band. The embodiments of the present application achieve highly efficient access of a channel without effecting surrounding competing nodes, thereby reducing notification signaling overhead.
Patent WO-2020062759-A1 (WO)
Title: 扩散板、背光结构和显示面板
Inventor: CHEN JINXIONG
IPC: G02B5/02
Filed: 2019-02-15
Abstract: 一种扩散板（150）、背光结构和显示面板，扩散板（150）为平板状结构，具有沿水平方向的第一表面和第二表面；沿垂直方向的第三表面和第四表面；以及沿第三方向的第五表面和第六表面，第三方向垂直于水平方向和垂直方向；其中，第一表面为光线射入面，第二表面位于第一表面上方，为光线射出面；第二表面通过第一连接面和第三表面连接，第二表面通过第二连接面和第四表面连接，第一连接面和第二连接面为弧形曲面和\或平滑的斜面。通过提供一种具有弧形曲面和\或平滑的斜面的扩散板代替传统平板型的扩散板，能够将光线通过折射投射到承载台（130）正上方的区域，从而在视觉上减小甚至消除了显示面板边缘的暗带。
Patent WO-2019223388-A1 (WO)
Inventor: YANG KAI
IPC: G06Q20/02
Filed: 2019-02-28
Abstract: 一种在线支付过程中的数据处理方法及装置，所述方法在在线支付过程中，先由付款方获取用于建立与收款方之间的支付协议所需的收款信息，在收款方根据收款信息返回的支付协议，并由付款方对支付协议中的收款信息进行确认之后，才向收款账户付款。
Patent WO-2019174627-A1 (WO)
Inventor: CHENG MING
IPC: H02P6/34
Filed: 2019-03-15
Abstract: 一种电机等效气隙模型，将感应电机与同步电机结构分为三个部分，初始励磁磁动势、调制器和滤波器的级联。初始励磁源在物理气隙上建立一个初始的磁动势分布；调制器调制初始励磁磁动势分布以产生一系列磁动势谐波分量，所有的磁动势谐波分量在气隙中产生相应的磁通密度谐波分量；电枢绕组作为空间谐波滤波器提取有效的气隙磁通密度谐波分量用于感应生成磁链或电动势，为负载供电或接收同步电流以产生相应的机械输出。
Patent WO-2019184780-A1 (WO)
Title: 显示基板、显示装置和无线充电方法
Inventor: REN YANWEI
IPC: H02J7/00
Filed: 2019-03-20
Abstract: 提供了一种显示基板、显示装置和无线充电方法。显示基板包括显示区域（10）和位于显示区域（10）之外的外围区域（20）。外围区域（20）包括电路绑定区（21）。显示基板包括衬底基板（100）以及设置于衬底基板（100）上的无线充电天线（110）。无线充电天线（110）包括受电线圈（111）和连接引线（112）。连接引线（112）连接受电线圈（111），以及受电线圈（111）连接电路绑定区（21）。
Patent WO-2019184992-A1 (WO)
Title: Movement control apparatus, movement control method, mask table system, and mask aligner
Inventor: LU YUWEN
IPC: G03F7/20
Filed: 2019-03-28
Abstract: Provided are a movement control apparatus, a movement control method, a mask table system, and a mask aligner, used for controlling synchronous movement of a first movement module and a second movement module. The first movement module and the second movement module are respectively provided on a first mounting frame (831) and a second mounting frame (832); the movement control apparatus comprises a first position feedback unit, a first trajectory acceleration feedforward unit (873), a first frame acceleration feedforward unit (875), a first additive operation module (874), a second position feedback unit, a second trajectory acceleration feedforward unit (883), a second frame acceleration feedforward unit (885), and a second additive operation module (884). The movement control apparatus can improve the movement precision of the first movement module and the second movement module, reduce mutual interference caused by movement dyssynchrony of the first movement module and the second movement module, and further improve the control precision of the movement control apparatus.
Patent WO-2020034647-A1 (WO)
Title: Heat insulation material and cooking device
Inventor: Guo Xingchuan
IPC: A47J37/06
Filed: 2019-04-03
Abstract: Provided are a heat insulation material and a cooking device with the same. The heat insulation material is prepared from 65-90 parts by weight of silicon dioxide and 10-30 parts by weight of silicon carbide.
Patent WO-2020210963-A1 (WO)
Title: 消息传输的方法和设备
Inventor: XU WEIJIE
IPC: H04W74/00
Filed: 2019-04-15
Abstract: 提供了一种消息传输的方法和设备，能够灵活地调整不同消息之间的时间间隔。该方法包括：终端设备根据第一消息的TA，发送所述第一消息；所述终端设备根据第二消息的TA，发送所述第二消息，其中，所述第一消息和所述第二消息为连续传输的两个消息，所述第二消息的TA与所述第一消息的TA不相等。
Patent WO-2020042633-A1 (WO)
Inventor: LIU YULIANG
IPC: F03D13/10
Filed: 2019-04-18
Abstract: Provided are a mounting frame (100), an energy storage unit (2), a variable pitch system, a wind turbine generator and method, wherein the mounting frame (100) is used for mounting accumulators (200) on a hub (1), comprising: a base (10), which has a pre-determined thickness, and has a mounting surface (11) in its own thickness direction (X); two or more energy storage mounting components (20), which are arranged on the mounting surface (11) at intervals, each energy storage mounting component (20) comprises a support component (21) connected with the mounting surface (11) and extending in the thickness direction (X) and a clamping component (22) connected with the support component (21), wherein the clamping component (22) clamps and fixes the accumulators (200), so as to mount all the accumulators (200) in the hub (1) on the mounting frame (100).
Patent WO-2020007102-A1 (WO)
Inventor: JIA RUIBAO
IPC: C02F9/08
Filed: 2019-04-25
Abstract: Un réacteur UV/O 3 /H 2 O 2  pour procédé d'oxydation avancée comprenant un tuyau d'entrée d'eau (1), un tuyau de sortie d'eau (2), un réacteur ultraviolet (3), une installation d'ajout de H 2 O 2  (4) et une installation d'ajout d'O 3  (5), le réacteur ultraviolet (3) étant d'une structure de type à entrée vers le bas et à sortie vers le haut, une pluralité de groupes de lampes à rayons ultraviolet (6) étant incorporés à l'intérieur de celui-ci; les groupes de lampes à rayons ultraviolet (6) et une plaque de séparation (10) sont disposés selon un certain angle; le tuyau d'entrée d'eau (1) est relié à une entrée d'eau (12) sous le réacteur ultraviolet (3); le tuyau de sortie d'eau (2) est relié à une sortie d'eau (13) au-dessus du réacteur ultraviolet (3); une conduite de raccordement du tuyau d'entrée d'eau (1) est prévue sur celui-ci avec l'installation d'ajout de H 2 O 2  (4) et l'installation d'ajout d'O 3  (5); après que l'eau brute ait été mise sous pression, du H 2 O 2  d'une certaine concentration est ajoutée au moyen de l'installation d'ajout de H 2 O 2  (4), puis de l'ozone d'une certaine concentration provenant de l'ozone qui est préparé par un générateur d'ozone (21) est ajouté au moyen d'un injecteur d'eau (15) puis entre dans le réacteur ultraviolet (3). L'invention concerne également un procédé d'oxydation avancée UV/O 3 /H 2 O 2 . Au moyen de la présente invention, des opérations séparées et combinées de trois modes d'oxydation avancée comprenant des UV/O 3 , de l'O 3 /H 2 O 2  et des UV/H 2 O 2 , etc., sont réalisées, l'efficacité d'oxydation est améliorée, et l'opération de processus est plus souple.
Patent WO-2020215366-A1 (WO)
Inventor: CHEN SHUHONG
IPC: B65G1/04
Filed: 2019-05-06
Abstract: The present invention belongs to the technical field of storage, and particularly relates to a three-dimensional matrix-type storage system. The three-dimensional matrix-type storage system comprises a computer management system, a matrix-type repository and a plurality of movable carrier platforms arranged in the matrix-type repository. The plurality of movable carrier platforms are arranged in the form of a two-dimensional matrix to form a digital Huarong Dao mode; two adjacent movable carrier platforms can slide relative to each other in a contact manner; and stacking can be performed on an upper portion of each movable carrier platform to form a three-dimensional matrix, and there is always a vacancy in the three-dimensional matrix to serve as a space for enabling the movable carrier platform to move. A cargo entrance/exit is provided in an end of the matrix-type repository, and the computer management system is used for controlling a specified movable carrier platform to move, in a parallel manner, towards the cargo entrance/exit along two-dimensional plane coordinates, thereby realizing the entering and leaving of cargo. The present invention is high in storage density and utilization rate of space, and related devices are simple in structural form and low in cost, and has a high practicability.
Patent WO-2019219003-A1 (WO)
Title: Random access method and device, storage medium, electronic device
Inventor: DONG FEI
IPC: H04W74/08
Filed: 2019-05-14
Abstract: The present disclosure provides a random access method and device, a storage medium, and an electronic device. The method comprises: acquiring a random access resource pool or a random access type of a physical random access channel (PRACH); and receiving random access response information according to the random access resource pool or the random access type. The present disclosure solves the technical problem in the related art that a resource collision is caused due to being unable to determine a received RAR.
Patent WO-2020151134-A1 (WO)
Inventor: LIU WEI
IPC: G01B21/04
Filed: 2019-05-15
Abstract: The present invention relates to the technical field of spatial measurement, and provides a 1D displacement sensor-based 3D measurement model and a spatial calibration method. The method comprises: firstly building a 3D measurement system based on a fixed support 1D displacement sensor; then establishing a 1D displacement sensor-based spatial measurement model; and then establishing a spatial calibration constraint equation on the basis of measurement plane high precision pose transformation data and sensor measurement data; and finally calculating 1D sensor external parameters (i.e., a measurement origin and a measurement vector) that meet the accuracy requirements by means of a weighted iterative algorithm, so as to complete the calibration process and achieve the establishment of a spatial 3D high precision measurement model. According to the method, the 1D displacement sensor-based spatial 3D measurement model is established, and the spatial calibration method for the model is provided, thereby improving the precision of the spatial 3D measurement model and solving the problem that space measurement is not accurate because of the error of the sensor external parameters. The method is simple in process and easy in operation, and is generally applicable.
Patent WO-2020151171-A1 (WO)
Inventor: HU WEIPIN
IPC: H01L51/52
Filed: 2019-06-18
Abstract: L'invention concerne un appareil d'affichage ayant une pluralité de sous-pixels. L'appareil d'affichage comprend un substrat matriciel et un contre-substrat faisant face au substrat matriciel. Le contre-substrat comprend un substrat de base ; un dispositif de compensation optique sur le substrat de base conçu pour ajuster des valeurs de luminosité d'émission de lumière de la pluralité de sous-pixels pour cibler des valeurs de luminosité respectivement; et une pluralité de parois de protection contre la lumière sur le substrat de base. Le dispositif de compensation optique comprend une pluralité de photocapteurs conçus pour détecter respectivement des valeurs de luminosité d'émission de lumière de la pluralité de sous-pixels. Une paroi respective de la pluralité de parois de protection contre la lumière est conçue pour protéger au moins partiellement un côté latéral d'un photocapteur respectif de la pluralité de photocapteurs à partir de la lumière émise par des sous-pixels adjacents.
Patent WO-2020007282-A1 (WO)
Title: Mounting sleeve
Inventor: LIU ZHENMING
IPC: F16F1/38
Filed: 2019-07-02
Abstract: A mounting sleeve (1), comprising an inner ring (11), a middle ring (12) and an outer ring (13) which are sequentially sleeved together, wherein the inner ring (11) comprises an inner ring body (111) and an inner ring stand (112); the inner ring stand (112) is disposed at a lower end portion of the inner ring body (111) and protrudes radially from an outer wall of the inner ring body (111); and both the middle ring (12) and the outer ring (13) are mounted above the inner ring stand (112). When the described type of mounting sleeve (1) is used to connect a connecting rod and a seat plate (2), the mounting sleeve (1) may abut against a cone column (3) provided on the seat plate (2) by means of the inner ring stand (112). When disassembly is required, an operating tool such as a crowbar may be used to pry the inner ring stand (112) upward so as to directly apply a levering force to the inner ring (11). Therefore, only a small levering force is required to remove the mounting sleeve (1). The removal of the mounting sleeve (1) is easier, and damage to the mounting sleeve (1) during the removal process may be largely avoided.
Patent WO-2021007705-A1 (WO)
Inventor: YOU XIN
IPC: H04W72/04
Filed: 2019-07-12
Abstract: The present application relates to a resource configuration method and apparatus, a computer device and a storage medium. A UE receives a handover command, performs non-RACH-based handover, and sends uplink data to a target base station according to a resource configuration instructed by the handover command; since the handover command is used to instruct the UE to send the resource configuration of the uplink data to the target base station, and the resource configuration is used to indicate beam configuration-based resources of the UE, i.e. the target base station configures, on the basis of a beam, uplink resources used for sending the uplink data; when the UE moves, the beam and the corresponding uplink resources on the beam may be selected from within the resource configuration so as to send the uplink data, which avoids the problem of beam handover caused by the movement of UE that then leads to the failure to send uplink data, thereby ensuring the reliability of the uplink data transmission.
Patent WO-2020248352-A1 (WO)
Inventor: FU XIAOLI
IPC: G09G3/36
Filed: 2019-08-08
Abstract: 一种伽马电压输出电路及其掉阶修复方法、源极驱动器，通过对掉阶灰阶电路对应的走线寄生电阻进行调整，使得掉阶灰阶电路的走线寄生电阻的阻值与对应掉阶灰阶电路的电阻阻值之和的比值和正常灰阶电路对应的比值的差值绝对值为预设值。
Patent WO-2020082898-A1 (WO)
Inventor: WANG JIYUAN
IPC: G06Q20/40
Filed: 2019-08-30
Abstract: A blockchain-based transaction processing method, comprising: a client acquiring, from a nonce list that corresponds to a user account and that is maintained in a blockchain, an available nonce record for a target transaction initiated by a user by means of the user account, wherein the nonce list comprises multiple nonce records, and the nonce records comprise a version identifier of the nonce list and a nonce value; the client adding the acquired available nonce record to the target transaction, and publishing the target transaction to the blockchain; a node device in the blockchain determining whether the version identifier in the available nonce record matches the version identifier of the nonce list that corresponds to the user account and that is maintained in the blockchain; if not, returning to the client prompt information that the target transaction is an invalid transaction; if so, further matching the available nonce record with the nonce record in the nonce list, performing replay attack detection on the target transaction, and accepting the target transaction when the target transaction passes replay attack detection.
Patent WO-2020140475-A1 (WO)
Title: 一种列车悬挂装置及悬挂式单轨列车
Inventor: PU QUANWEI
IPC: B61F5/12
Filed: 2019-09-11
Abstract: 一种列车悬挂装置，枕梁（4）和连接座（2）通过阻尼单元（3）相对连接，内支撑件（31）的外壁和外支撑件（33）的内壁径向尺寸沿竖向从一端向另一端逐渐缩小，内支撑件（31）和外支撑件（33）中的其中一个与连接座（2）相连接，另一个与枕梁（4）相连，在使用时内支撑件（31）和外支撑件（33）具有相对靠近的趋势，由于两者相互靠近的表面呈渐缩设置，两者无法相对分离；内支撑件（31）和外支撑件（33）相对靠近时对中间缓冲件（32）产生挤压作用，中间缓冲件（32）可弹性变形，当内支撑件（31）和外支撑件（33）相互冲击时起到缓冲效果，连接座（2）和枕梁（4）并不直接固连，对转向架上的振动和噪音起到隔绝效果，提高车体的乘坐舒适性。一种包含上述列车悬挂装置的悬挂式单轨列车可实现相同的技术效果。
Patent WO-2021051326-A1 (WO)
Inventor: HAN LEI
IPC: H04W48/16
Filed: 2019-09-18
Abstract: 本申请提供一种接入控制方法及装置，用于提高UE接入5G小区的成功率。本申请提供的接入控制方法包括：在LTE的频点上进行小区选择的过程中，先在支持ENDC的LTE小区所在的频点上进行小区搜索，为了便于描述，在本申请实施例中，将支持ENDC的LTE小区所在的频点称作第一频点。若第一频点可以驻留，则驻留在第一频点。通过将支持ENDC的LTE小区所在的频点设置为具有较高的小区选择优先级，有利于提高终端驻留在支持ENDC的LTE小区的概率，以使得终端通过支持ENDC的LTE小区接入5G小区，从而有利于提高终端接入5G小区的成功率，提高用户体验。
Patent WO-2021017180-A1 (WO)
Inventor: YANG JIE
IPC: H01L27/32
Filed: 2019-10-15
Abstract: 一种阵列基板及显示面板，阵列基板包括基板以及设置于基板上的阳极层（104、204、304、404、504、604、704、804、904），且阳极层（104、204、304、404、504、604、704、804、904）上设置有环绕阵列基板的显示区的第一挡墙（101、201、301、401、501、601、701、801、901），以及与第一挡墙（101、201、301、401、501、601、701、801、901）相对应的第一应力缓冲区（106、206、306、406、506、606、706），且第一应力缓冲区（106、206、306、406、506、606、706）内设置有贯穿阳极层（104、204、304、404、504、604、704、804、904）的第一孔结构（1031、2031、3031、4031、5031、6031、7031、8031、9031）。
Patent WO-2020078356-A1 (WO)
Title: Ball bearing and lantern rings
Inventor: TANG BINGHUI
IPC: F16C33/76
Filed: 2019-10-15
Abstract: A ball bearing (10) and lantern rings (50). Two lantern rings (50) are arranged on two sides of a ball part (52) in an axis direction; the ball part (52) consists of a plurality of balls surrounded and clamped by ball outer ring parts (20) and ball inner ring parts (22); each lantern ring (50) consists of a lantern ring inner ring part (32) and a lantern ring outer ring part (30); gas gap channels (40) are formed between the lantern ring inner ring parts (32) and the lantern ring outer ring parts (30); the ball inner ring parts (22) and the lantern ring inner ring parts (32) are connected to a rotating shaft in a sleeving mode; the lantern ring outer ring parts (30) are connected to the ball outer ring parts (20) and provided with outer ring gas channels (3002); the outer ring gas channels (3002) is communicated with the gas gap channels (40); and the positions, connected to the internal space of the ball bearing, of the gas gap channels (40) are of a first turning structure (42). Accordingly, gas is injected into the gas gap channels (40) by the outer ring gas channels (3002), and lubricating oil and gas can be blocked outside the gas gap channels (40) and the first turning structure (42) by the formed gas pressure, so that leakage of the lubricating oil and gas is avoided.
Patent WO-2020119287-A1 (WO)
Inventor: DUAN JINMING
IPC: G06Q30/04
Filed: 2019-10-25
Abstract: 一种基于区块链的发票创建方法及装置、电子设备，该方法可以包括：接收用户通过客户端提交的发票创建请求；其中，所述发票创建请求包括交易标识和用户输入的发票创建信息(102)；响应于所述发票创建请求，确定所述区块链上是否存证了与所述交易标识对应的目标交易；以及，用于指示所述目标交易为有效交易的至少一种关键信息(104)；如果确定所述区块链上存证了所述目标交易和所述关键信息，调用智能合约中声明的发票创建逻辑，根据所述发票创建信息为所述目标交易创建发票，并将创建的发票发布至所述区块链(106)。