Patents by Inventor Qifeng Liu

Qifeng Liu 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).

  • Patent number: 11926549
    Abstract: The present disclosure discloses a treatment process and treatment system of enhanced up-flow multiphase wastewater oxidation. The treatment process includes the following steps: 1) the wastewater is fed into the up-flow multiphase wastewater oxidation system for oxidation treatment; 2) the wastewater is fed to the solid-liquid separation system for solid-liquid separation, the separated heterogeneous catalytic carrier (5) is fed back to the up-flow multiphase wastewater oxidation system, and the wastewater is fed to the neutralization and degassing system; 3) the wastewater is fed to the neutralization and degassing system to adjust a pH of the wastewater to 5.5-7.5, and then is degassed by stirring; 4) the wastewater is fed to the flocculation and sedimentation system for sludge-water separation, a supernatant is discharged, and an outward harmless treatment is performed after a pressure filtration of a sedimentary iron sludge.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: March 12, 2024
    Assignee: Guangxi Bossco Environmental Protection Agency
    Inventors: Qifeng Yang, HongXiang Zhu, Guoning Chen, Hainong Song, Lihai Lu, Yanding Qin, Xi Liu, Yongli Chen, Hongfei Lin, Qianling Chen, Jinglong Wang
  • Patent number: 11921174
    Abstract: The present application relates to a technical field of determining an irreversible demagnetization of a grain boundary diffusion NdFeB magnet, and more particularly, to a method for identifying an irreversible demagnetization of a grain boundary diffusion NdFeB magnet by magnetic field distribution. After applying a reverse magnetic field to a saturatedly magnetized grain boundary diffusion NdFeB magnet, if a number of magnetic poles on a non-diffusion face of the grain boundary diffusion NdFeB magnet is increased, it is determined that there is an irreversible demagnetization in the grain boundary diffusion NdFeB magnet.
    Type: Grant
    Filed: July 11, 2023
    Date of Patent: March 5, 2024
    Assignees: Hangzhou Magmax Technology Co., Ltd., Hangzhou Foresee Group Holding Co., Ltd.
    Inventors: Jinghui Di, Huiqiang Liu, Xiongfei Wu, Shengli Jia, Hui Meng, Qifeng Wei
  • Publication number: 20170289004
    Abstract: Disclosed are a flow table ageing method, device and system and a computer-readable medium. The method can comprise: a switch receives a flow table configuration message issued by a controller; the switch sets a data volume life cycle parameter value of a flow table according to the flow table configuration message; and when a data volume matched according to the flow table of the switch reaches the data volume life cycle parameter value of the flow table, the switch ages the flow table.
    Type: Application
    Filed: December 23, 2014
    Publication date: October 5, 2017
    Inventors: Fangwei Hu, Qifeng Liu
  • Publication number: 20120038833
    Abstract: In order that a television connected to a network can be uniquely identified, a television chip with a unique identification is provided. A non-volatile storage unit is set in the television chip, and the unique identification that can be uniquely identified in a determined scope is stored in the storage unit. After the unique identification is written in the storage unit, the storage unit is set up as a read-only storage unit; and the television chip is set in a television that can be connected to the network. The technical scheme of the invention can be applied to the television decoding chip in the television, wherein the television is connected to the network, a specific television can be identified through the network, so that it will be easier and more accurate during billing the consumption of users owning the television.
    Type: Application
    Filed: August 21, 2009
    Publication date: February 16, 2012
    Applicant: Powerplayer Microsystems Holding Inc.
    Inventors: Xu Dong, Daniel Wong, Wei Zhao, Qifeng Liu
  • Publication number: 20120002902
    Abstract: An accurate image interpolation method based on direction detection and device thereof are disclosed. The image interpolation method based on direction detection includes the following steps: step a, detecting an interpolating direction of a pixel to be processed to obtain interpolating direction information of the pixel; step b, utilizing the result of detecting an interpolating direction to interpolate the pixel to be processed. Another step a? between the step a and step b is also included: utilizing the interpolating direction information of the pixel adjacent to the pixel to be processed for correcting the result of step a; at step b, utilizing the detection result of interpolating direction corrected at the step a? to interpolate the pixel to be processed.
    Type: Application
    Filed: September 25, 2008
    Publication date: January 5, 2012
    Applicant: POWERLAYER MICROSYSTEMS HOLDING INC.
    Inventors: Jin Zhou, Qifeng Liu
  • Patent number: 7952561
    Abstract: A method of controlling an application using a motion of an image pickup unit, the method includes storing gestures corresponding to a command to control an application, tracing a motion parameter corresponding to an image that is continuously input, detecting a gesture corresponding to the traced motion parameter from the stored gestures, and outputting a control signal of a command corresponding to the detected gesture.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Qifeng Liu, Young-su Moon, Yoon-kyung Kim
  • Publication number: 20110051003
    Abstract: The invention involves the technology of video digital image processing. With respect to the problem of larger error existed in the existing video image motion processing method, a video image motion processing method introducing global feature classification is provided. The video image motion processing method introducing global feature classification includes the following steps of: extracting local features of pixel points, including local motion features; extracting the global feature of an image; classifying the pixel points according to the obtained local features and the global feature; assigning correction parameters to the obtained types; correcting the local motion features by means of the obtained correction parameters. Another object of the invention is to provide a device for realizing the above video image motion processing method introducing global feature classification.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 3, 2011
    Applicant: POWERLAYER MICROSYSTEMS HOLDING INC.
    Inventors: Jin Zhou, Qifeng Liu, Yu Deng, Jianxin Yan, Guoqing Xiong
  • Publication number: 20080143880
    Abstract: A method of detecting a caption of a video, the method including: detecting a caption candidate area of a predetermined frame of an inputted video; verifying a caption area from the caption candidate area by performing a Support Vector Machine (SVM) scanning for the caption candidate area; detecting a text area from the caption area; and recognizing predetermined text information from the text area.
    Type: Application
    Filed: June 15, 2007
    Publication date: June 19, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Cheol Kon Jung, Qifeng Liu, Ji Yeun Kim, Sang Kyun Kim
  • Publication number: 20080117168
    Abstract: A method of controlling an application using a motion of an image pickup unit, the method includes storing gestures corresponding to a command to control an application, tracing a motion parameter corresponding to an image that is continuously input, detecting a gesture corresponding to the traced motion parameter from the stored gestures, and outputting a control signal of a command corresponding to the detected gesture.
    Type: Application
    Filed: August 22, 2007
    Publication date: May 22, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Qifeng Liu, Young-su Moon, Yoon-Kyung Kim
  • Publication number: 20070292027
    Abstract: A method, medium, and system extracting text, including filtering a text domain image using a stroke filter, determining a color polarity of the text by using a response value of the stroke filter, binarizing the response value of the stroke filter, and expanding a local domain by using a binary domain generated by the binarization.
    Type: Application
    Filed: January 11, 2007
    Publication date: December 20, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Cheol Kon Jung, Qifeng Liu, Ji Yeun Kim, Young Su Moon, Sang Kyun Kim
  • Publication number: 20070201764
    Abstract: An apparatus for detecting a caption from a moving picture, including: a caption domain detector selecting a candidate frame based on input genre information from an input moving picture and determining expectation caption domains from the selected candidate frame set; a target caption detector selecting target caption candidate domains based on repetition of a position or color pattern of the expectation caption domains and determining target caption domains based on a rate of change in a character or number domain from the selected target caption candidate domains; and a key caption detector detecting a key character or number information domain by analyzing the target caption domains.
    Type: Application
    Filed: July 19, 2006
    Publication date: August 30, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Cheol Jung, Young Moon, Jin Jeong, Ji Kim, Qifeng Liu