International Business Machines Corporation

China Unionpay Co., Ltd.

Chinese Academy of Sciences

General Electric Company

Huawei Technologies Co., Limited

Boe Technology Group Co., Ltd.

Beijing Boe Optoelectronics Technology Co., Ltd.

Other

Intel Corporation

Ge Medical Systems Global Technology Company, LLC

Hefei Boe Optoelectronics Technology Co., Ltd.

China Petroleum & Chemical Corporation

Via Alliance Semiconductor Co., Ltd.

Shanghai Bilibili Technology Co., Ltd.

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Yu Chen Zhou

Xin Peng Liu

Wei Guo

Xi Ning Wang

Xiao Bi Liang

Zhijun Lu

Liang Xue

Shuo He

Hongfeng Chai

Chengqian Chen

Yu Zheng

Hong Tao Liu

Hualiang Jiang

Yi Ge

Kaixian Chen

Dingzhou Li

Ning Zhang

Timothy John Baldwin

Shilie Pan

Duncan George Clark

Jian Wang

Michael Muller

Qi Yu

Daniel M Gruen

Shaw-Ben Shi

Hui Calvin Yang

Tao Zhu

Mary Elizabeth Raven

Chuang Li

Daniel Q Chen

Jian Li

Jing Li

Zhi Jun Wang

Li Yi

Pei Li

Eduardo T Kahan

Dong Zhang

Feng Shi

Yanglai Shuai

Wayne B Riley

Meng Hong Tsai

Cheng Luo

Xin Xie

Ying Chen

Guo Kang Fu

Niu Huang

Xingyu Lin

Qingyan Wang

Chen Zhang

Qian Wang

David Grey Smith

Lin Ma

Yu Zhang

Bin Yu

Jun Feng Liu

Lin Xu

Wei Zhao

Lei Ma

Jing Chang Huang

Yan Huang

Wei Shen

Chih-Hsiung Liu

Zeng Li

Li Yang

Ying Nan Li

Tingting Zhao

Yi Qin Yu

Lu Zhang

Yue Pan

Jian Lin

Fei Zhao

Dong Wang

Rong Zhang

Xiang Yu

Xing Zhi Sun

Xin Sheng Mao

Lei Jin

Lishun Hu

Yan Fu

Hongfei Wu

Jianping Zuo

Wenqiang Yang

Yiping Ruan

Qinran Chen

Jun Liu

Andre Langel

Wen Xiong

Chang Hua Sun

Shuang Liang

Jilong Wang

Zhiqiang Liu

Xiang Yao

Hongwen Meng

Yun Zheng

Haiyan Zhang

Fangfang Zhang

Qinglei Li

Yi Sui

Liumeng Yang

Yongtang Zheng

A method for authorizing a blockchain data access on a blockchain platform includes: obtaining from a third-party institution a data access request containing a user ID of data access, a data scope, and a random number of a signature, which is generated by the third-party institution after receiving a random number sent by a client terminal and signing on the received random number; performing a verification on the random number of the signature and the data scope; and after the verification is passed, sending data ciphertext corresponding to the user ID to the third-party institution, such that the third-party institution decrypts the data ciphertext using a data secret key sent by the client terminal.

Blockchain data access authorization method, apparatus, and device

A blockchain consensus method includes: on the basis of transaction data and a verifiable delay function, a node generating a target block, or synchronously acquiring a target block from other nodes; determining, from among multiple sub-blockchains, a target sub-blockchain based on information of a target block, and adding the target block to the target sub-blockchain; then, acquiring respective corresponding effective block sequences from the multiple sub-blockchains; performing global sorting on effective blocks on the basis of logic clocks respectively corresponding to acquired effective blocks, and acquiring a global blockchain. A global blockchain is acquired by using a means of multi-chain consensus, thereby improving the expandability and transaction throughput of a blockchain system in a large-scale open network environment. Acquiring a global blockchain by performing global sorting on effective blocks on the basis of logic clocks corresponding to the effective blocks can better improve the security of a multi-chain system.

Blockchain consensus method, apparatus, and device, and storage medium

A bullet-screen comment display method is provided. The method includes: detecting a target object in an original frame image of a video at a first preset frequency in a process of playing the video, and when the target object is detected, outputting a display area of the target object in the original frame image; generating a mask image corresponding to the original frame image based on the display area, obtaining a bullet-screen comment display area corresponding to the original frame image; and if there is an overlapping area between the bullet-screen comment display area and the display area of the target object in the original frame image, combining the mask image and a bullet-screen comment displayed in the bullet-screen comment display area into a video picture with a non-obstructive bullet-screen comment, and displaying the video picture with a non-obstructive bullet-screen comment at a bullet-screen comment layer, where a bullet-screen comment included in the video picture with a non-obstructive bullet-screen comment does not block the target object.

Bullet-screen comment display

Chocolate

A laser fusion welding device includes a 1.9 μm laser light source, a control unit and a light spot adjusting device. The control unit is configured to control the laser light source and the light spot adjusting device to adjust a laser power density at an object to be subjected to fusion welding. The 1.9 μm laser light source has output power of 100-500 W. The control unit includes a time control unit, a power control unit and a light spot control unit. The time control unit is configured to control a turn-on time of the laser light source. The power control unit is configured to control the output power of the laser light source. The light spot control unit is configured to control the light spot adjusting device to adjust a size of a light spot at the object to be subjected to fusion welding.

Laser fusion welding device

The present application discloses a semiconductor device and a manufacturing method thereof. The manufacturing method comprises manufacturing a semiconductor material layer comprising two laminated semiconductor layers between which an etching transition layer is provided; and etching a part of one of semiconductor layers located in a selected region until etching is stopped after reaching or entering the etching transition layer, subjecting the part of the etching transition layer located in the selected region to thermal decomposition through thermal treatment to be completely removed, and realizing termination of thermal decomposition on another semiconductor layer, so as to precisely form a trench structure in the semiconductor material layer. The present application can achieve precise control of the depth of the trench etched on the semiconductor material to thoroughly avoid surface damage caused by etching and ensure that the electrical characteristic of the device is not affected by fluctuation of the etching process.

Semiconductor device and manufacturing method thereof employing an etching transition layer

Example communication methods, apparatus, and systems are described. One example system includes a centralized unit control plane (CU-CP) and at least one distributed unit (DU). The CU-CP includes at least one first entity and a second entity, where the second entity is configured to perform a function of a radio resource management (RRM) algorithm in a base station, and the at least one first entity is configured to perform functions of a packet data convergence protocol (PDCP) layer and a radio resource control (RRC) layer in the base station.

Communication method, apparatus, and system

A method for measuring concentrations of multiple gases by using an infrared band laser light includes: pumping Ho crystal by using a 1.9 &#x3bc;m single thulium-doped solid-state laser to obtain a 2 &#x3bc;m band near-infrared laser output; controlling a light-emitting angle of 2 &#x3bc;m band laser light; allowing the 2 &#x3bc;m laser light to enter a first measurement cell at a first emergent angle, and measuring a concentration of methane gas in the first measurement cell; generating and introducing the 3-5 &#x3bc;m mid-infrared laser light into a second measurement cell to measure concentrations of ammonia gas and carbon monoxide in the second measurement cell; generating and introducing the 6-12 &#x3bc;m far-infrared laser light into a third measurement cell to measure concentrations of carbon dioxide, acetylene, ethylene and ethane gas in the third measurement cell.

Method for measuring concentrations of multiple gases by using infrared band laser light

A method for measuring multiple parameters of mixed gases based on broadband infrared light source is provided, including: filtering a broadband infrared laser, and forming a laser beam including three narrow-linewidth wavelengths; dividing the laser beam into a first sub-laser beam and a second sub-laser beam; focusing and transmitting the first sub-laser beam to a gas sample cell; focusing and transmitting the first sub-laser beam to a first reflector; reflecting and transmitting the first sub-laser beam; reflecting and transmitting the second sub-laser beam to the second beam splitter; combing the first sub-laser beam transmitted by the second beam splitter and the second sub-laser beam reflected by the second beam splitter, measuring the multiple parameters; combining and transmitting the second sub-laser beam transmitted by the second beam splitter and the first sub-laser beam reflected by the second beam splitter to a spectrometer for measuring concentrations the mixed gases.

Method for measuring multiple parameters of mixed gases based on broadband infrared light source

A fiber optic sensing head includes a single-mode optical fiber, a twin hole optical fiber including a cladding region and a core region surrounded by the cladding region, and the core region includes a second core located at an axis center, as well as a first and second round holes symmetrically distributed with respect to the second core; an incoming end of a gradient refractive-index fiber is connected to an outgoing end of the twin hole optical fiber with the incoming end of the gradient index fiber aligned with the outgoing end of the single-mode optical fiber at center. A thermal-sensitive structure is filled in a preset length part of the second round hole extending along an axial direction of the twin hole optical fiber. An incoming end of the twin hole optical fiber is connected to an outgoing end of the gradient index optical fiber with displacement.

Temperature sensor based on twin hole optical fiber

The present disclosure provides a method and a device for control of blockchain data access based on a smart contract. The method includes obtaining, by a blockchain node, an access operation request of an institution, the access operation request including a transaction identifier of a transaction to be accessed, according to the transaction identifier, determining a blockchain state corresponding to the transaction identifier, the blockchain state including a hash value of the transaction corresponding to a last time change of the blockchain state, according to the hash value of the transaction corresponding to the last time change in the blockchain state and an identifier of the institution, performing data access control on the institution, obtaining control result, and transmitting the control result to the institution.

Method and device for control of blockchain data access based on smart contract

An apparatus and method herein efficiently couple spatial light to optical fiber light for achieving stability of an optical axis without a position sensor. The basic concept of the method includes: first, obtaining, according to a theoretical coupling efficiency model, a model parameter by means of fitting calculation; second, using a four-point tracking algorithm to calculate an optical fiber nutation trajectory according to the optical fiber nutation principle; and finally, using the nutation trajectory to calculate the position deviation of a central point. The optical axis is ensured to be stable by correcting the position deviation, and the high coupling efficiency remains. The method is used for the stability of the optical axis in a space coherent laser communication DPSK link. The high efficiency coupling is a key technology of long-distance, high bit rate transmission in space laser communication, and is significant in the development of inter-satellite optical communications.

Apparatus and method for coupling the spatial light to the optical fiber light for achieving the stability of an optical axis without a position detector

The present invention relates to a method for access control of a multimedia system to a secure operating system and a mobile terminal for implementing the method. The method includes the steps of: initiating an application access request for selecting a trusted application from a client application of a multimedia system to a secure operating system; making a decision as to whether the client application is a malicious application, and if not, proceeding to a next step, if yes, returning Selection Failure to the client application and performing an interrupt handling; sending the application access request from the multimedia system to the secure system; and acquiring, at the secure operating system, the trusted application based on the application access request and returning the trusted application to the multimedia system. The malicious accesses initiated by a malicious application to a trusted application in a securing operating system can be prevented without switching between systems, and the problem that a trusted application cannot be accessed due to malicious access can be avoided.

Tee access control method and mobile terminal implementing same

Embodiments of the present invention disclose an application management method for terminals, including: after receiving the application download request sent by the terminal, the application server sends the corresponding application installation package to the terminal. Then, the first verification message sent by the terminal is received, and the first verification message is generated by the terminal according to the content of the received application installation package. After determining that the first verification message is consistent with a stored second verification message, the application server sends an permit-to-install message to the terminal, so that the terminal installs the application according to the received application installation package. Because the application server determines the legitimacy of the application package, it does not need the terminal to verify by using the certificate, thereby reducing the certificate work management for the terminal and improving the efficiency of application installation.

Application management method for terminal, application server, and terminal

A group III nitride enhancement-mode HEMT based on a composite barrier layer structure and a manufacturing method thereof are provided. The HEMT includes first and second semiconductors respectively serving as a channel layer and a barrier layer, a third semiconductor serving as a p-type layer, a source, a drain and a gate, wherein a recessed structure is formed in the region of the barrier layer corresponding to the gate, which is matched with the third semiconductor and the gate to form a p-type gate, and the second semiconductor includes first and second structure layers successively arranged on the first semiconductor; relative to the selected etching reagent, the first structure layer has higher etching resistance than the second structure layer.

Group III nitride enhancement-mode HEMT based on composite barrier layer structure and manufacturing method thereof

Growing community of inventors

Beijing, China

Yu Chen Zhou