baber/WOPTO huggingface dataset:
Patent WO-2020118687-A1 (WO)
Title: 一种自适应参数学习的动态磁共振图像重建方法和装置
Inventor: WANG SHANSHAN
IPC: G06T11/00
Filed: 2018-12-14
Abstract: 一种自适应参数学习的动态磁共振图像重建方法和装置，其中，该方法是对CS-MRI模型中的正则化项进行改进，包括在空间域使用DCT和在时间域使用TV对动态磁共振图像进行去冗余，并且利用卷积神经网络来对CS-MRI中大量的参数进行自适应学习，建立磁共振图像重建模型；通过建立的磁共振重建模型对样本图像进行重建，得到重建图像；计算全采样图像与重建图像的差值；根据差值，利用网络中的反向传播算法，对模型中的参数，包括DCT、TV滤波算子和正则化参数等进行更新。该方法可以对高度欠采样图像进行高效的重建，得到重建精度和重建速度很高的图像，从而可以在不损失空间分辨率的情况下有效缩短磁共振扫描的时间。
Patent WO-2020034512-A1 (WO)
Title: Hot water system for air conditioner
Inventor: QIN ZIQIANG
IPC: F24D17/00
Filed: 2018-12-17
Abstract: A hot water system for an air conditioner, comprising a refrigerant circulation system, wherein the refrigerant circulation system comprises a compressor (10) and an outdoor heat exchanger (20), and further comprises a refrigerant heat exchanger (30) and a water circulation system; the refrigerant heat exchanger (30) and the water circulation system are selectively disposed between the compressor (10) and the outdoor heat exchanger (20); and when the water circulation system is disposed between the compressor (10) and the outdoor heat exchanger (20), medium water in the water circulation system exchanges heat with refrigerant in the refrigerant circulation system. The present invention may effectively solve the problem in existing technology of an air conditioner system not being able to take into consideration the functions of rapid cooling and providing hot water.
Patent WO-2019227916-A1 (WO)
Title: Image processing method and apparatus, electronic device and storage medium
Inventor: LIU WENTAO
IPC: G06T3/00
Filed: 2018-12-27
Abstract: An image processing method and apparatus, an electronic device and a storage medium. The method comprises: detecting an image to be processed, and determining a contour line and multiple regions of a target object in the image to be processed; for a target region from among the multiple regions, determining first adjusting parameters of target pixel points according to set parameters; for the target region, determining a second adjusting parameter of a second pixel point according to the first adjusting parameters; and according to the first adjusting parameters and the second adjusting parameter, adjusting the image to be processed to obtain an adjusted image. The method can realize adaptive adjustment of a background region when a target region is adjusted, such that the influence on the background region is lessened when a target object in an image to be processed is adjusted, thereby avoiding deformation of the background region when a region inside a contour line is adjusted.
Patent WO-2019242283-A1 (WO)
Title: 用于取暖器的加湿组件和具有其的取暖器
Inventor: QIU SHUIBING
IPC: F24F6/08
Filed: 2018-12-28
Abstract: 一种用于取暖器(200)的加湿组件(100)和具有其的取暖器(200)，用于取暖器(200)的加湿组件(100)包括：储液箱体(1)，储液箱体(1)的底部具有出液口(11)；蒸发加湿箱体(2)，蒸发加湿箱体(2)设在储液箱体(1)的底部，蒸发加湿箱体(2)上形成有与出液口(11)连通的至少一个滴液孔(2213)和与外部大气连通的至少一个蒸发出孔(211)。
Patent WO-2020133513-A1 (WO)
Title: 云台系统、移动平台及对战系统
Inventor: LI BOWEN
IPC: A63F9/02
Filed: 2018-12-29
Abstract: 一种云台系统、移动平台及对战系统，云台系统用于射击对战，云台系统包括：云台（1）和对战信息交互装置（2）；对战信息交互装置（2）设置在云台（1）的外侧面，用于收发对战信息和/或根据对战信息进行特效输出。
Patent WO-2020140199-A1 (WO)
Inventor: PENG HAO
IPC: H01L21/67
Filed: 2019-01-02
Abstract: 一种半导体处理设备及其控制方法，所述半导体处理设备包括处理腔室（201），所述处理腔室（201）内具有两个以上反应区域（1, 2, 3），各反应区域（1, 2, 3）具有独立的气路模块，所述控制方法包括：在进行半导体处理的过程中，保持向各反应区域（1, 2, 3）内通入气体的循环周期同步。所述半导体处理设备及其控制方法，能够控制各反应区域（1, 2, 3）内通入的反应气体的循环周期保持一致，使得同一时间向不同的反应区域（1, 2, 3）内通入的气体相同，避免各反应区域（1, 2, 3）之间的气体发生干扰，从而提高产品良率。
Patent WO-2019137337-A1 (WO)
Title: Cell selection method, terminal, and network device
Inventor: ZHENG QIAN
IPC: H04W48/20
Filed: 2019-01-07
Abstract: Embodiments of the present invention relate to the technical field of communications and provide a cell selection method, a terminal, and a network device, for implementing cell selection of a terminal in a non-activated state. The method comprises: receiving first indication information sent by a network device, the first indication information being used for indicating that a terminal in a non-activated state is allowed or prohibited to select a first cell; and determining a candidate cell of the terminal in the non-activated state according to the first indication information.
Patent WO-2019223338-A1 (WO)
Inventor: LIN BIN
IPC: B24B1/00
Filed: 2019-01-11
Abstract: 一种基于次摆线进给轨迹的硬脆材料划痕实验方法，根据实验方案自行设计次摆线划痕进给轨迹线，首选变切深次摆线进给轨迹的硬脆材料划痕实验方法估测实验因素的水平设定范围，后用恒切深次摆线进给轨迹的硬脆材料划痕实验方法对待测因素的某水平一次验证。解决了目前单磨粒磨削技术划擦速度受限、高速划痕工况下轨迹重复叠加造成的表面、亚表面损伤覆盖叠加、双/多磨粒磨削技术实验成本高且刀具可重复利用率低的问题。能够在保证实验精度的前提下，打破传统划痕实验的种种弊端，降低实验成本，减少试验次数，缩短试验周期，同时更加契合磨削加工中砂轮与工件之间相互作用的实际工况，在材料去除机理研究方面具有极大科研价值。
Patent WO-2019179221-A1 (WO)
Inventor: HUANG FENG
IPC: A61F2/24
Filed: 2019-01-11
Abstract: An implant loading apparatus comprising a guider (1) and a guide base (2). The guider (1) is sleeved on the exterior of the guide base (2). The guide base (2) comprises a guide column (21), a connecting section (23), and a base (25) connected in the axial direction. Fixing sections are provided on either end of the connecting section (23). The guide base (2) is removably connected to the guider (1) via the fixing sections. The guide base (2) is provided with the two fixing sections that fit the guider (1) to implement twice removable fixing, thus favoring a coaxial operation. A valve stent is neither twisted nor tilted during a compression process, thus increasing loading efficiency, greatly reducing the operation difficulty of a surgery, and allowing the implementation of a single person operation.
Patent WO-2020007031-A1 (WO)
Title: 一种苯酞类衍生物及其制备方法和应用
Inventor: LIU JUNXI
IPC: A61P9/00
Filed: 2019-01-17
Abstract: 公开了一种苯酞类衍生物，该衍生物的结构如式(I)或式(II)所示。还公开了该衍生物的制备方法和应用。通过结构改造得到苯酞类化合物，增强了苯酞类化合物的化学稳定性和药理活性，有助于提高该类化合物的成药性。
Patent WO-2019196532-A1 (WO)
Inventor: XU SHAOPENG
IPC: G09F9/30
Filed: 2019-01-17
Abstract: L'invention concerne un panneau d'affichage souple (10) et un dispositif d'affichage souple. Le panneau d'affichage souple (10) comprend une couche d'écran souple (11) et une couche de support élastique (12) qui sont empilées. La couche de support élastique (12) comprend un mécanisme de support et un mécanisme élastique. Le mécanisme de support est conçu pour supporter la couche d'écran souple (11) et est pliable, et le mécanisme élastique est conçu pour générer une force élastique permettant d'empêcher une flexion de façon à maintenir à plat la couche d'écran souple (11) lorsque la couche d'écran souple (11) est étendue.
Patent WO-2020164007-A1 (WO)
Inventor: WANG XIN
IPC: H03K7/02
Filed: 2019-02-13
Abstract: 一种PAM-N CDR电路及其控制方法，与传统方法中把DFE的延迟信号直接反馈到电平判决器的输入端不同，本申请的PAM-N CDR电路通过DFE将反馈电压信号转换为电流信号，并在电平判决器的负载上与和输入电压信号对应的电流进行相加，以实现对输入信号的反馈，这样可以降低DFE第一级抽头对通道时序的要求，使得信号通道更容易匹配，从而解决了传统的技术方案中存在的DFE难以与信号通道匹配的问题，从而增加接收信号眼图的开启度，降低系统的误码率，进而提高光纤通信系统的性能。
Patent WO-2019174546-A1 (WO)
Title: User interface display method and device, apparatus, and storage medium
Inventor: JING LEI
IPC: G06F9/451
Filed: 2019-03-11
Abstract: A user interface display method and device, an apparatus, and a storage medium, belonging to the field of human-computer interaction. The method comprises: displaying a first user interface of a first application program (401); upon receipt of a preset gesture signal on the first user interface, displaying a first floating window on the first user interface, the first floating window comprising the program icon of a second application program (402); upon receipt of a first operation signal on the program icon, canceling the display of the first floating window, and displaying a second user interface of the second application program in a partial screen area of the display screen (403). The present invention can simplify operation steps of a user during switching between different application programs, improving human-computer interaction efficiency.
Patent WO-2020062807-A1 (WO)
Inventor: XU XIAOSU
IPC: G01C21/16
Filed: 2019-03-21
Abstract: A method for application of an improved unscented Kalman filter algorithm in underwater integrated navigation, the method comprising: defining a coordinate system to be used; establishing a state equation of an SINS/DVL subsystem in an underwater submarine stage; establishing a measurement equation of the SINS/DVL subsystem in the underwater submarine stage; establishing the state equation of the SINS/GPS subsystem in a water surface position correction stage; establishing a measurement equation of the SINS/GPS subsystem in the water surface position correction stage; and establishing a nonlinear filter equation in the underwater submarine stage. After a period of underwater submarine submersion, an AUV emerges from the water surface, and a non-linear filter equation is established in a water surface position correction stage, an improved unscented Kalman filter solution is conducted, thereby completing a time update, measurement update and filter update, and correcting timing position information. The method can improve the filtering solution efficiency and navigation accuracy of the underwater integrated navigation system, thereby reducing the calculation complexity of a filtering algorithm, and guaranteeing real-time performance and stability.
Patent WO-2019196743-A1 (WO)
Inventor: LI CANGZHU
IPC: E04C5/16
Filed: 2019-04-04
Abstract: 一种套筒外螺母卡接式连接装置及其连接结构、安装方法，该连接装置包括套筒(1)和外卡接螺母(3)，套筒(1)的两端外侧面设有外螺纹(12)，外卡接螺母(3)与套筒(1)螺纹连接，外卡接螺母(3)远离套筒(1)的一端固定连接有限位板(31)，限位板(31)上设有与套筒(1)内部空间相连通的通孔(32)，通孔(32)的内径小于套筒(1)端口的内径；该连接结构包括该连接装置和连接钢筋(2)，连接钢筋(2)端部固定连接有外径小于通孔(32)内径的扩大头(21)；该方法包括以下步骤：S1：将外卡接螺母(3)套在连接钢筋(2)上，S2：将连接钢筋(2)插入套筒(1)内部，S3：将外卡接螺母(3)与套筒(1)相螺纹连接。使用该装置、结构、方法可提高套筒(1)对墙体的连接强度，安装方便。
Patent WO-2019206184-A1 (WO)
Title: Allocation system, method and apparatus for machine learning, and computer device
Inventor: MENG XIAOFU
IPC: G06F9/54
Filed: 2019-04-24
Abstract: An allocation system for machine learning, comprising a terminal server (20) and a cloud server (10). The terminal server (20) is used for: acquiring demand information; generating a control instruction according to the demand information, wherein the control instruction comprises a terminal control instruction and a cloud control instruction; parsing the terminal control instruction to obtain a terminal control signal; and calculating a terminal workload of a machine learning algorithm of each stage according to the terminal control signal to obtain a terminal operation result. The cloud server (10) is used for parsing the cloud control instruction to obtain a cloud control signal, and calculating a cloud workload of the machine learning algorithm of each stage according to the cloud control signal to obtain a cloud operation result. The terminal operation result and the cloud operation result together compose an output result. The system utilizes computational resources of the terminal server (20) and the cloud server (10), and accelerates the operating speed. Also disclosed are an allocation method and apparatus for machine learning, a computer device and a computer-readable storage medium.
Patent WO-2020172984-A1 (WO)
Inventor: LI XINGQUN
IPC: B63B35/44
Filed: 2019-04-25
Abstract: La présente invention concerne une plaque séparatrice réduisant la traînée pour un puits central, dont la partie supérieure est une paroi droite perpendiculaire au niveau de la mer, la partie inférieure de celle-ci est reliée à un déflecteur, et une partie de liaison est reliée entre la paroi droite et le déflecteur. La partie de liaison peut se présenter sous la forme d'un arc, d'une ligne pliée, ou d'une ligne droite. La forme de la plaque séparatrice réduisant la traînée correspond à celle de la paroi arrière du puits central. Pendant la navigation, la plaque séparatrice réduisant la traînée est disposée au milieu ou à l'avant du puits central, et peut coopérer avec une encoche de réduction de traînée sur la paroi arrière du puits central pour réduire considérablement la traînée induite par un tremblement intense de l'eau dans le puits central pendant la navigation d'un navire d'ingénierie en mer. Lorsque des opérations d'ingénierie en mer sont effectuées dans un état de stationnement, la plaque séparatrice réduisant la traînée de la présente invention est déplacée vers la paroi arrière du puits central pour éviter d'entraver les opérations d'ingénierie en mer.
Patent WO-2020010905-A1 (WO)
Inventor: ZHENG YANLI
IPC: H04W24/02
Filed: 2019-04-30
Abstract: L'invention concerne un procédé et un dispositif récepteur pour l'estimation de canal d'un canal de diffusion. Selon un mode de réalisation, le dispositif récepteur détermine une première estimation de canal d'un signal de référence de démodulation (DMRS) provenant d'un dispositif émetteur. Le dispositif récepteur détermine une seconde estimation de canal d'un ou plusieurs signaux de référence de synchronisation provenant du dispositif émetteur. Le dispositif récepteur détermine une estimation de canal finale d'un canal de diffusion provenant du dispositif émetteur, au moins sur la base des première et seconde estimations de canal.
Patent WO-2020232682-A1 (WO)
Inventor: CAI YE
IPC: H03M7/30
Filed: 2019-05-22
Abstract: The present invention provides a parallel compression system and method employing hardware. The parallel compression system employing hardware comprises a cyclic redundancy check module, a data size recording module, a compression core scheduling module, and N compression cores. During parallel compression performed on data to be compressed, M bits are acquired from the data every cycle, and the M bits are inputted into a system every cycle, wherein M and N are positive integers. The cyclic redundancy check module is used to calculate a cyclic redundancy check code of the data. The data size recording module is used to calculate the size of the data. The compression core scheduling module is used to test an execution status of the N compression cores and allocate, according to the execution status of the N compression cores, the M bits to the N compression cores for compression. The N compression cores are used to compress the M bits, where in the N compression cores perform compression in parallel. The technical solutions of embodiments of the present invention perform parallel compression on the data, thereby improving the speed of data compression.
Patent WO-2019242467-A1 (WO)
Title: 一种防止流量欺诈的方法及装置
Inventor: LI HUA
IPC: H04W4/24
Filed: 2019-05-28
Abstract: 本申请提供一种防止流量欺诈的方法和装置，该方法包括：在拜访网络上报网络使用情况的同时，用户设备也上报网络使用情况，归属网络通过比较二者上报网络使用情况，判断是否存在可能的流量欺诈，如果存在流量欺诈，则根据预设策略进行处理。通过本发明提供的技术方案，可以针对流量欺诈采取措施，从而尽可能减少用户与运营商之间的计费纠纷。
Patent WO-2020057192-A1 (WO)
Title: 核酸扩增检测装置以及诊断分析仪
Inventor: ZHANG ZHONG
IPC: C12Q1/686
Filed: 2019-06-14
Abstract: 本申请提供一种核酸扩增检测装置以及诊断分析仪，其属于分析检测设备领域。该装置包括微观芯片、检测装置以及移运组件。检测装置包括热循环系统和实时信号检测系统，热循环系统用于为微观芯片中的样本进行核酸扩增提供合适的温度；实时信号检测系统用于对发生核酸扩增后的样本进行荧光检测。移运组件用于抓取微观芯片并将微观芯片转移至检测装置的检测区。该装置操作简单，能够同时进行核酸扩增和荧光检测，极大地方便了需要用于PCR处理的样品的检测。通过移运组件将微观芯片转移至检测装置进行扩增、检测，该核酸扩增检测装置自动化程度高，有利于提高检测效率。
Patent WO-2020252676-A1 (WO)
Inventor: MAO LIANHUA
IPC: H04R1/10
Filed: 2019-06-19
Abstract: Disclosed is a bone conduction headset, comprising a headset housing, a PCBA, a battery, an antenna, a bone conduction MIC and a receiver. An accommodating cavity is formed in the headset housing, and the PCBA, the battery, the antenna, the bone conduction MIC and the receiver are all mounted in the accommodating cavity; the headset housing is convexly provided with a protrusion, the receiver is fitted in the accommodating cavity positioned at the protrusion, and the accommodating cavity is provided with a sound delivery hole corresponding to the top end of the protrusion; the antenna is located at an end, away from the protrusion, inside the accommodating cavity; the bone conduction MIC is attached to an inner wall of the accommodating cavity and is positioned at the headset housing corresponding to cartilage at an external auditory canal opening; and the battery, the antenna, the bone conduction MIC and the receiver are all electrically connected to the PCBA. According to the present invention, the protrusion is arranged on the headset housing of the bone conduction headset, the bone conduction MIC is positioned corresponding to the cartilage of an external auditory canal, and bone conduction is achieved by means of the cartilage, such that an in-ear wearing mode of the bone conduction headset is achieved, wearing can be realized without an ear hanging device, and not only is the bone conduction headset comfortable and convenient to wear, the production cost can also be reduced.
Patent WO-2019242653-A1 (WO)
Title: Diviseur réglable éclairé pour un compartiment de stockage d'un appareil de réfrigération
Inventor: WANTLAND LOUIS A
IPC: F25D25/02
Filed: 2019-06-19
Abstract: Un appareil de réfrigération (100) comprend un ensemble tiroir (200) pour une chambre froide de l'appareil. L'ensemble tiroir (200) comprend un compartiment de stockage (202) positionné à l'intérieur de la chambre froide et un ou plusieurs séparateurs réglables (210) montés coulissants à l'intérieur du compartiment de stockage (202). Les diviseurs réglables (210) comprennent un bras de support supérieur (216), une fenêtre (214) qui agit en tant que guide ou diffuseur de lumière, et une source de lumière (300) montée sur le diviseur réglable (210) de sorte à éclairer le compartiment de stockage (202). L'ensemble tiroir (200) comprend en outre une alimentation électrique (302), telle qu'un ensemble barre omnibus (310) ayant des bornes de bande positive et négative parallèles (314, 312) qui restent connectés à des bornes de ressort sur les diviseurs réglables (210) afin de garantir que la source de lumière (300) reste éclairée lorsque les diviseurs réglables (210) sont déplacés à l'intérieur du compartiment de stockage (202).
Patent WO-2020252777-A1 (WO)
Inventor: DUAN RAN
IPC: H04N21/431
Filed: 2019-06-21
Abstract: The present application discloses a display apparatus including a solution-on-chip (SOC) comprising a first input port receiving video data, a second input port configured to receive image data in a first resolution, and a central-processing unit comprising a frame-cut block integrated with an image processor to divide a frame of image data in the first resolution to 4 parts of the frame in a second resolution in a serial order. The display apparatus further includes a FPGA configured to write, read, and process respective one of the 4 parts of the frame in the serial order sent from the SOC to reconstruct a frame of image data in the first resolution. Furthermore, the display apparatus includes a TCON configured to receive the frame of the image data in the first resolution reconstructed by the FPGA and a display panel driven by the TCON to display the frame of image data.
Patent WO-2020228121-A1 (WO)
Title: Method for manufacturing thin film transistor, and thin film transistor
Inventor: CHEN MENG
IPC: H01L21/44
Filed: 2019-07-11
Abstract: Provided are a method for manufacturing a thin film transistor, and a thin film transistor. A copper/molybdenum dual-metal-layer structure is used as a wire, a gate insulation layer and a molybdenum metal layer are patterned firstly, and a gate copper metal layer is then coated and patterned, such that the occurrence of undercut and hollow-out phenomena is reduced and prevented, a defect rate of a display panel is reduced, and the reliability of the display panel is improved.
Patent WO-2021030928-A1 (WO)
Title: Measurement control method, electronic device, and storage medium
Inventor: YANG NING
IPC: H04W36/36
Filed: 2019-08-16
Abstract: The present application discloses a measurement control method, comprising: a terminal device, after receiving a first measurement configuration sent by a first network device, receiving a first message sent by a second network device, wherein the first message is used by the terminal device to acquire a second measurement configuration and/or to determine processing for the first measurement configuration, and the first measurement configuration and the second measurement configuration are cell measurement configurations in an effective region. The application further discloses another measurement control method, an electronic device, and a storage medium.
Patent WO-2021031158-A1 (WO)
Title: Positioning system and method for movable object, movable object, and storage medium
Inventor: HUANG ZHENHAO
IPC: G01S5/02
Filed: 2019-08-21
Abstract: A positioning system and method for a movable object, the movable object, and a storage medium. The positioning system comprises: a movable object (211); a positioning device (212) used for acquiring a positioning parameter of a preset reference position; a measurement device (213) provided on a preset benchmark position and used for measuring a relative position parameter between the movable object (211) and the benchmark position, and a relative position parameter between the reference position and the benchmark position; and a control device (214) used for establishing a unified coordinate system according to the relative position parameter between the movable object (211) and the benchmark position and the relative position parameter between the reference position and the benchmark position, and calculating the relative position parameter and a positioning parameter of the reference position on the basis of the unified coordinate system, so as to determine a positioning parameter of the movable object. The movable object can be accurately positioned in an environment where a barrier exists.
Patent WO-2020063569-A1 (WO)
Inventor: QIAO SHENGJIE
IPC: F21V5/08
Filed: 2019-09-24
Abstract: L'invention concerne une plaque de diffusion (101), comprenant une surface incidente à la lumière et une surface de sortie de lumière, la surface de sortie de lumière de la plaque de diffusion (101) comportant une microstructure ayant un agencement continu. Une lampe ayant la plaque de diffusion (101) comprend une base (3), une paroi (2) de lampe et une tête (1) de lampe, la paroi (2) de lampe reliant la tête (1) de lampe et la base (3) ; la tête (1) de lampe comprend un logement (106), et une source de lumière (104) disposée à l'intérieur du logement (106) ; le logement (106) comporte un port de sortie de lumière, et la plaque de diffusion (101) recouvre le port de sortie de lumière. Au moyen de l'agencement en réseau d'une microstructure d'une surface de la plaque de diffusion (101), la réfraction se produit dans différentes directions lorsque les rayons de lumière traversent la plaque de diffusion (101), modifiant ainsi le chemin de déplacement de la lumière, ce qui réduit ainsi l'éblouissement et permet d'obtenir un effet d'éclairage plus doux et plus homogène.
Patent WO-2020063687-A1 (WO)
Inventor: YANG HAITAO
IPC: H04N19/52
Filed: 2019-09-25
Abstract: 一种基于运动估计评估区域(Motion Estimation Region MER)的解码方法，其包括，获取当前编码块的划分信息；根据所述划分信息确定所述当前编码块所属的当前MER；确定所述当前编码块与选定的一个空域候选对应的第一编码块是否属于同一MER；确定与所述当前MER空域临近的第二编码块；基于所述当前编码块的空域邻近的编码块构建空域运动信息候选列表，其中所述空域邻近的编码块位于所述当前MER之外；根据所述空域运动信息候选列表对所述当前编码块进行预测及重建。本发明提供的方法在选定的一个空域候选不可用时，重新得到一个不在当前MER中的空域候选对应的编码块，使得最终用于构建空域运动信息候选列表是可用的，以及可以保证同一MER能够包括完整的编码块，从而在进行编码块的空域候选运动信息列表构建过程中能够获取尽可能多的候选运动信息，以提高编码性能。
Patent WO-2020134494-A1 (WO)
Inventor: WANG LILI
IPC: D01F6/92
Filed: 2019-10-29
Abstract: 本发明涉及一种半消光涤纶牵伸丝及其制备方法，制备方法为：按FDY工艺由改性聚酯熔体制得半消光涤纶牵伸丝；改性聚酯的制备方法为：将对苯二甲酸、乙二醇、主链含硅的二元醇、含氟二元酸、消光剂和掺杂改性的Bi2O3粉体混合均匀后先后进行酯化反应和缩聚反应，含氟二元酸为2,2-二氟-1,3-丙二酸、2,2-二氟-1,4-丁二酸、2,2-二氟-1,5-戊二酸或2,2,3,3-四氟-1,4-丁二酸。制得产品在120℃的温度条件下的上染率为87.5～91.8％，在温度为25℃且相对湿度为65％的条件下放置60个月后，其特性粘度下降18～26％。本发明的制备方法工艺简单，制得的产品的染色及降解性能好。