Patents by Inventor Qun Yu

Qun Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180300236
    Abstract: An access request processing method and apparatus, and a computer system is disclosed. The computer system includes a processor and a non-volatile memory (NVM). When receiving a write request, the processor determines an object cache page according to the write request. After determining that the NVM stores a log chain of the object cache page, the processor inserts, into the log chain of the object cache page, a second data node recording information about a second log data chunk. The log chain already includes a first data node recording information about the first log data chunk. The second log data chunk is at least partial to-be-written data of the write request. Then, the processor sets, in the first data node, data that is in the first log data chunk and that overlaps the second log data chunk to invalid data.
    Type: Application
    Filed: June 26, 2018
    Publication date: October 18, 2018
    Inventors: Jun Xu, Qun Yu, Licheng Chen
  • Publication number: 20180293075
    Abstract: A data processing method and apparatus are provided. A system includes a CPU pool and a storage pool, a mapper node and a reducer node respectively run on different CPUs in the CPU pool, and a remote storage area shared by the mapper node and the reducer node is delimited in the storage pool. In this method, the mapper node executes a map task, and stores a data segment obtained by executing the map task, into the remote storage area; and the reducer node directly obtains a data segment to be processed by the reducer node from the remote storage area, and executes a reduce task on the data segment. The method omits some actions in the prior art, and shortens a time for executing the Map/Reduce task.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 11, 2018
    Inventors: Haiyan LIU, Jun XU, Qun YU
  • Patent number: 10077545
    Abstract: A dual-adjustment flow limiting device includes an outer shell, an inner shell, a flow limiting member, and an adjustment mechanism. The outer shell defines a plurality of external ports. The inner shell defines a flow chamber and a plurality of internal ports communicating with the flow chamber and is fitted into the outer shell such that a communicating area is formed between the internal and external ports. The flow limiting member is disposed in the flow chamber of the inner shell and can be deformed in response to the pressure of a water flow entering the flow chamber to partially block the internal ports, so that the water flow entering the flow chamber can be restricted. The adjustment mechanism is provided at the outer and inner shells to adjust the communicating area, so that the water flow can be further restricted.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: September 18, 2018
    Assignee: Fujian Xihe Sanitary Ware Technology Co., Ltd.
    Inventors: Xiaofa Lin, Xiaoshan Lin, Qiqiao Liu, Xiaoqing Deng, Qun Yu
  • Patent number: 10061711
    Abstract: A file access method and apparatus, and a storage system are provided. After receiving a file access request from a process, a first physical address space is accessed according to a preset first virtual address space and a preset first mapping relationship between the first virtual address space and the first physical address space, where the first physical address space stores a file system. After obtaining an index node of a target file from the first physical address space according to a file identifier of the target file carried in the file access request, a file page table of the target file is obtained according to file page table information. The file page table records a second physical address space in the first physical address space. The target file is accessed according to the second physical address space.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: August 28, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Guanyu Zhu, Jun Xu, Qun Yu
  • Publication number: 20180173643
    Abstract: A file data access method and a computer system, where the method includes accessing a page global directory (PGD) of the process using PGD space when accessing first file data by a process, determining, based on access to the PGD and according to a first virtual address of the first file data in file system space, a first PGD entry in the PGD, linking a file page table of the process to the first PGD entry, where the file page table points to a physical address of the file data such that a processor retrieves a first physical address of the first file data in a memory according to the first virtual address using the PGD and the file page table, and accessing the first file data according to the first physical address.
    Type: Application
    Filed: February 13, 2018
    Publication date: June 21, 2018
    Inventors: Qun Yu, Jun Xu, Yuangang Wang
  • Patent number: 9822889
    Abstract: A flow limiting device with a back flow prevention mechanism includes a body that has an isolation board and a water-through cavity. The isolation board has a water-through hole connecting to the water-through cavity and a flow limiting device having a flow limiting component and stop ribs which limit the position change of the flow limiting component. The stop ribs are arranged on the inner wall of the water-through cavity at equal intervals. The flow limiting component is set in the water-through cavity. The outer side of the flow limiting component is contacted on the stop ribs. A back flow prevention mechanism comprises, a back flow prevention component which is fixed in the water-through hole and a supporting structure which is set for supporting the back flow prevention component when it expands on the inner wall of the water-through cavity.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: November 21, 2017
    Assignee: FUJIAN XIHE SANITARY WARE TECHNOLOGY CO., LTD.
    Inventors: Xiaofa Lin, Xiaoshan Lin, Qiqiao Liu, Xiaoqing Deng, Qun Yu
  • Publication number: 20170218609
    Abstract: A dual-adjustment flow limiting device includes an outer shell, an inner shell, a flow limiting member, and an adjustment mechanism. The outer shell defines a plurality of external ports. The inner shell defines a flow chamber and a plurality of internal ports communicating with the flow chamber and is fitted into the outer shell such that a communicating area is formed between the internal and external ports. The flow limiting member is disposed in the flow chamber of the inner shell and can be deformed in response to the pressure of a water flow entering the flow chamber to partially block the internal ports, so that the water flow entering the flow chamber can be restricted. The adjustment mechanism is provided at the outer and inner shells to adjust the communicating area, so that the water flow can be further restricted.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Inventors: Xiaofa Lin, Xiaoshan Lin, Qiqiao Liu, Xiaoqing Deng, Qun Yu
  • Publication number: 20170168953
    Abstract: A file access method and apparatus, and a storage system are provided. After receiving a file access request including a file identifier, first physical address space is accessed according to first virtual address space and a first mapping relationship between the first virtual address space and the first physical address space storing a file system. After obtaining, from the first physical address space, an index node of an object file indicated by the file identifier, a file page table is obtained according to information included in the index node, where the file page table records second physical address space of the object file. Then, second virtual address space is allocated to the object file. After establishing a second mapping relationship between the second physical address space and the second virtual address space, the object file in the second physical address space is accessed according to the second virtual address space.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 15, 2017
    Inventors: Jun Xu, Guanyu Zhu, Qun Yu
  • Publication number: 20170168952
    Abstract: A file access method and apparatus, and a storage system are provided. After receiving a file access request from a process, a first physical address space is accessed according to a preset first virtual address space and a preset first mapping relationship between the first virtual address space and the first physical address space, where the first physical address space stores a file system. After obtaining an index node of a target file from the first physical address space according to a file identifier of the target file carried in the file access request, a file page table of the target file is obtained according to file page table information. The file page table records a second physical address space in the first physical address space. The target file is accessed according to the second physical address space.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 15, 2017
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Guanyu ZHU, Jun XU, Qun YU
  • Publication number: 20170009899
    Abstract: A flow limiting device with a back flow prevention mechanism includes a body that has an isolation board and a water-through cavity. The isolation board has a water-through hole connecting to the water-through cavity and a flow limiting device having a flow limiting component and stop ribs which limit the position change of the flow limiting component. The stop ribs are arranged on the inner wall of the water-through cavity at equal intervals. The flow limiting component is set in the water-through cavity. The outer side of the flow limiting component is contacted on the stop ribs. A back flow prevention mechanism comprises, a back flow prevention component which is fixed in the water-through hole and a supporting structure which is set for supporting the back flow prevention component when it expands on the inner wall of the water-through cavity.
    Type: Application
    Filed: December 1, 2015
    Publication date: January 12, 2017
    Applicant: FUJIAN XIHE SANITARY WARE TECHNOLOGY CO., LTD.
    Inventors: Xiaofa LIN, Xiaoshan LIN, Qiqiao LIU, Xiaoqing DENG, Qun Yu
  • Patent number: 8088410
    Abstract: An oil composition containing 25-hydroxy Vitamin D3 and an oil is provided. In addition an emulsion, a microencapsulated oil composition, and a feed premix composition each containing 25-hydroxy Vitamin D3 are provided. Methods of making an oil composition, a microencapsulated oil composition, and a feed premix containing 25-hydroxy Vitamin D3 are also provided.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: January 3, 2012
    Assignee: DSM IP Assets B.V.
    Inventors: Jean-Claude Tritsch, Li-Qun Yu, Stephen Thomas Mazzaro
  • Publication number: 20110238758
    Abstract: A system for displaying feeds contents of a contact and for processing feeds contents of a contact. The system obtains feeds content data of a contact of a user, mixes and sorts the feeds content data. The system pulls out, when the user requests for obtaining the feeds contents of the contact, complete information of the feeds contents requested by the user, and displaying the complete information.
    Type: Application
    Filed: June 6, 2011
    Publication date: September 29, 2011
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Zhu Liang, Xing Yao, Songtao Lin, Zhihao Zheng, Jiang Jiang, Qun Yu, Yue Wu, Zhenyu Guo, Xiaojun Zeng, Min Chen, Yanjie He, Shan Chen, Wenjiang Zhou, Hao Wu, Ye Deng
  • Patent number: 7806150
    Abstract: A method for packing and/or mixing particulate materials, e.g., aerogel particles, includes combining materials having different particle sizes and applying a negative pressure differential in the presence of a sound field. A negative pressure differential in the presence of vibration also can be used. The method increases mixing and packing density.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: October 5, 2010
    Assignees: New Jersey Institute of Technology, Cabot Corporation
    Inventors: Robert Pfeffer, Jameel Menashi, Qun Yu
  • Publication number: 20100112162
    Abstract: An oil composition containing 25-hydroxy Vitamin D3 and an oil is provided. In addition an emulsion, a microencapsulated oil composition, and a feed premix composition each containing 25-hydroxy Vitamin D3 are provided. Methods of making an oil composition, a microencapsulated oil composition, and a feed premix containing 25-hydroxy Vitamin D3 are also provided.
    Type: Application
    Filed: December 4, 2009
    Publication date: May 6, 2010
    Applicant: DSM IP ASSETS B.V.
    Inventors: Jean-Claude Tritsch, Li-Qun Yu, Stephen Thomas Mazzaro
  • Patent number: 7658340
    Abstract: With the coupling of an external field and aeration (or a flow of another gas), nanoparticles can be smoothly and vigorously fluidized. A magnetic force and/or pre-treatment may be employed with the fluidizing gas and, when coupled with a fluidizing medium, provide excellent means for achieving homogenous nanofluidization. The magnetic force interacts with non-fluidizing magnetic particles and helps to break channels as well as provide enough energy to disrupt the strong interparticle forces, thereby establishing an advantageous agglomerate size distribution. Enhanced fluidization is reflected by improved performance-related attributes. The fluidized nanoparticles may be coated, surface-treated and/or surface-modified in the fluidized state. In addition, the fluidized nanoparticles may participate in a reaction, either as a reactant or a catalyst, while in the fluidized state.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: February 9, 2010
    Assignee: New Jersey Institute of Technology
    Inventors: Robert Pfeffer, Caroline H. Nam, Rajesh N. Dave, Guangliang Liu, Jose A. Quevedo, Qun Yu, Chao Zhu
  • Patent number: 7645327
    Abstract: Systems and methods for achieving filtration are provided that utilize agglomerates or granules of nanoparticles. The agglomerates or granules of nanoparticles may be used as and/or incorporated into a HEPA filtration system to remove solid or liquid submicron-sized particles, e.g., MPPS, in an efficient and efficacious manner. The filtration systems and methods are provided that utilize agglomerates or granules in a size range of about 100-500 microns. The agglomerates or granules of nanoparticles exhibit a hierarchical fractal structure. In the case of agglomerates of nanoparticles, porosities of 0.9 or greater are generally employed, and for granules of nanoparticles, porosities that are smaller than 0.9 may be employed. Filter media formed from the agglomerates or granules may be formed from materials such as carbon black and fumed silica, and may be employed in baffled or non-baffled filtration apparatus.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: January 12, 2010
    Assignee: New Jersey Institute of Technology
    Inventors: Robert Pfeffer, Rajesh Dave, Stanislav Dukhin, Jose A. Quevedo, Qun Yu
  • Patent number: 7632518
    Abstract: An oil composition containing 25-hydroxy Vitamin D3 and an oil is provided. In addition an emulsion, a microencapsulated oil composition, and a feed premix composition each containing 25-hydroxy Vitamin D3 are provided. Methods of making an oil composition, a microencapsulated oil composition, and a feed premix containing 25-hydroxy Vitamin D3 are also provided.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: December 15, 2009
    Assignee: DSM IP Assets B.V.
    Inventors: Jean-Claude Tritsch, Li-Qun Yu, Stephen Thomas Mazzaro
  • Publication number: 20090293719
    Abstract: Systems and methods for achieving filtration are provided that utilize agglomerates or granules of nanoparticles. The agglomerates or granules of nanoparticles may be used as and/or incorporated into a HEPA filtration system to remove solid or liquid submicron-sized particles, e.g., MPPS, in an efficient and efficacious manner. The filtration systems and methods are provided that utilize agglomerates or granules in a size range of about 100-500 microns. The agglomerates or granules of nanoparticles exhibit a hierarchical fractal structure. In the case of agglomerates of nanoparticles, porosities of 0.9 or greater are generally employed, and for granules of nanoparticles, porosities that are smaller than 0.9 may be employed. Filter media formed from the agglomerates or granules may be formed from materials such as carbon black and fumed silica, and may be employed in baffled or non-baffled filtration apparatus.
    Type: Application
    Filed: May 2, 2006
    Publication date: December 3, 2009
    Inventors: Robert Pfeffer, Rajesh Dave, Stanislav Dukhin, Jose A. Quevedo, Qun Yu
  • Publication number: 20090272078
    Abstract: A method for packing and/or mixing particulate materials, e.g., aerogel particles, includes combining materials having different particle sizes and applying a negative pressure differential in the presence of a sound field. A negative pressure differential in the presence of vibration also can be used. The method increases mixing and packing density.
    Type: Application
    Filed: May 12, 2009
    Publication date: November 5, 2009
    Applicants: New Jersey Institute of Technology, Cabot Corporation
    Inventors: Robert Pfeffer, Jameel Menashi, Qun Yu
  • Publication number: 20070108320
    Abstract: With the coupling of an external field and aeration (or a flow of another gas), nanoparticles can be smoothly and vigorously fluidized. A magnetic force and/or pre-treatment may be employed with the fluidizing gas and, when coupled with a fluidizing medium, provide excellent means for achieving homogenous nanofluidization. The magnetic force interacts with non-fluidizing magnetic particles and helps to break channels as well as provide enough energy to disrupt the strong interparticle forces, thereby establishing an advantageous agglomerate size distribution. Enhanced fluidization is reflected by improved performance-related attributes. The fluidized nanoparticles may be coated, surface-treated and/or surface-modified in the fluidized state. In addition, the fluidized nanoparticles may participate in a reaction, either as a reactant or a catalyst, while in the fluidized state.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 17, 2007
    Inventors: Robert Pfeffer, Caroline Nam, Rajesh Dave, Guangliang Liu, Jose Quevedo, Qun Yu, Chao Zhu