Patents by Inventor Xiaoqiang Chen

Xiaoqiang Chen 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: 10635929
    Abstract: The present invention belongs to the field of machine vision. A saliency-based method for extracting a road target from a night vision infrared image is disclosed. The method combines saliencies of the time domain and the frequency domain, global contrast and local contrast, and low level features and high level features, and energy radiation is also considered to be a saliency factor; thus, the object of processing is an infrared image and not the usual natural image. The extraction of a salient region is performed on the raw natural image on the basis of energy radiation, and the obtained extraction result if the salient region is more accurate and thorough, and the contour of a target in the salient region is clearer.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: April 28, 2020
    Assignee: JIANGSU UNIVERSITY
    Inventors: Yingfeng Cai, Lei Dai, Hai Wang, Xiaoqiang Sun, Long Chen, Haobin Jiang, Xiaobo Chen, Youguo He
  • Patent number: 10570410
    Abstract: This invention relates to an artificial salt tolerant protein NLEA with the amino acid sequence shown in SEQ ID No.1 and a synthetic method of salt tolerant protein NLEA comprising the steps of retrieving different types of LEA proteins from LEA database; making multiple sequence alignment on different types of LEA proteins to obtain conserved short peptides; selecting hydrophilic short peptides with a hydrophilicity index higher than 3.5 from conserved short peptides; arranging and splicing hydrophilic short peptides in the order of isoelectric point size from large to small, to obtain salt tolerant protein NLEA. This invention involves bioinformatics analysis by retrieving different LEA conserved amino acid sequences of LEA protein data. Physical properties are analyzed to find short peptides of high hydrophilicity, and such short peptides are arranged in the order of isoelectric point size and spliced to get a new hydrophilic amino acid sequence.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: February 25, 2020
    Assignee: TIANJIN AGRICULTURAL UNIVERSITY
    Inventors: Xiaodong Xie, Yao Zhan, Shoujun Sun, Gaoyi Cao, Ming Li, Bo Ding, Xiaoqiang Chen
  • Publication number: 20190261981
    Abstract: A surgical instrument has an interlocking function and includes an end effector, an elongated portion and a handle portion. Two ends of the elongated portion are respectively connected to the end effector and the handle portion. The handle portion includes a handle housing, a rotatable knob arranged on a distal portion of the handle portion and operatively to be reciprocated along the longitudinal direction of the elongated portion, and a locking assembly including at least one slide member and a lockout gear. The slide member is arranged between the rotatable knob and the handle housing, and axially fixed with the rotatable knob so as to be reciprocated with the rotatable head for being operatively engaged with the slide member. The slide member is circumferentially fixed with the handle portion, and the lockout gear is rigidly mounted at a proximal portion of the elongated portion. The safety of the surgical instrument may be improved due to high structural stability and high stability between components.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 29, 2019
    Inventors: Xiaoqiang CHEN, Zhenzhen XU
  • Publication number: 20190197344
    Abstract: The present invention belongs to the field of machine vision. A saliency-based method for extracting a road target from a night vision infrared image is disclosed. The method combines saliencies of the time domain and the frequency domain, global contrast and local contrast, and low level features and high level features, and energy radiation is also considered to be a saliency factor; thus, the object of processing is an infrared image and not the usual natural image. The extraction of a salient region is performed on the raw natural image on the basis of energy radiation, and the obtained extraction result if the salient region is more accurate and thorough, and the contour of a target in the salient region is clearer.
    Type: Application
    Filed: June 8, 2017
    Publication date: June 27, 2019
    Applicant: JIANGSU UNIVERSITY
    Inventors: Yingfeng CAI, Lei DAI, Hai WANG, Xiaoqiang SUN, Long CHEN, Haobin JIANG, Xiaobo CHEN, Youguo HE
  • Patent number: 10313278
    Abstract: A computer-implemented method of providing matching information to prospective first and second users is performed at a server, the method including: receiving first audio data and first user information; receiving second audio data, and second user information; storing a first timestamp of the first audio data and first user information and a second timestamp of the second audio data and second user information; performing analysis processing on the first audio data to obtain first feature information, and performing analysis processing on the second audio data to obtain second feature information; judging whether the first timestamp and the second timestamp and the first feature information and the second feature information match; and if the first and second times of receipt and the first and second feature information match, sending the first user information to the second user and sending, by the server, the second user information to the first user.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 4, 2019
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Xiaoqiang Chen, Kai Xie, Bo Wen
  • Publication number: 20180223306
    Abstract: This invention relates to an artificial salt tolerant protein NLEA with the amino acid sequence shown in SEQ ID No.1 and a synthetic method of salt tolerant protein NLEA comprising the steps of retrieving different types of LEA proteins from LEA database; making multiple sequence alignment on different types of LEA proteins to obtain conserved short peptides; selecting hydrophilic short peptides with a hydrophilicity index higher than 3.5 from conserved short peptides; arranging and splicing hydrophilic short peptides in the order of isoelectric point size from large to small, to obtain salt tolerant protein NLEA. This invention involves bioinformatics analysis by retrieving different LEA conserved amino acid sequences of LEA protein data. Physical properties are analyzed to find short peptides of high hydrophilicity, and such short peptides are arranged in the order of isoelectric point size and spliced to get a new hydrophilic amino acid sequence.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 9, 2018
    Inventors: Xiaodong XIE, Yao ZHAN, Shoujun SUN, Gaoyi CAO, Ming LI, Bo DING, Xiaoqiang CHEN
  • Patent number: 9712474
    Abstract: A method of providing information to a prospective user is performed at a server having one or more processors and memory storing programs to be executed by the processors, the method including receiving audio feature information and location information from a client device, wherein the audio feature information is extracted from an audio signal received by the client device and the location information identifies a current location of the client device; comparing predefined audio feature information with the received audio feature information and comparing predefined location information with the received location information; and pushing predefined information to the client device from the server if there is a match of both comparisons made at the server.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: July 18, 2017
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Kai Xie, Bo Wen, Xiaoqiang Chen
  • Publication number: 20170180278
    Abstract: A computer-implemented method of providing matching information to prospective first and second users is performed at a server, the method including: receiving first audio data and first user information; receiving second audio data, and second user information; storing a first timestamp of the first audio data and first user information and a second timestamp of the second audio data and second user information; performing analysis processing on the first audio data to obtain first feature information, and performing analysis processing on the second audio data to obtain second feature information; judging whether the first timestamp and the second timestamp and the first feature information and the second feature information match; and if the first and second times of receipt and the first and second feature information match, sending the first user information to the second user and sending, by the server, the second user information to the first user.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Inventors: Xiaoqiang CHEN, Kai XIE, Bo WEN
  • Patent number: 9634964
    Abstract: A computer-implemented method of providing matching information to prospective first and second users is performed at a server, the method including: receiving first audio data and first user information; receiving second audio data, and second user information; storing a first timestamp of the first audio data and first user information and a second timestamp of the second audio data and second user information; performing analysis processing on the first audio data to obtain first feature information, and performing analysis processing on the second audio data to obtain second feature information; judging whether the first timestamp and the second timestamp and the first feature information and the second feature information match; and if the first and second times of receipt and the first and second feature information match, sending the first user information to the second user and sending, by the server, the second user information to the first user.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: April 25, 2017
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Xiaoqiang Chen, Kai Xie, Bo Wen
  • Publication number: 20160191652
    Abstract: The disclosure discloses a method and device for storing data. In the method, a request message is initiated to a network side device, and network data to be cached are acquired; and one or more cache entity objects are selected for the network data from a cache entity object set, and acquired first-type network data are directly stored into the one or more cache entity objects, or, serialized second-type network data are stored into the one or more cache entity objects. According to the technical solutions provided by the disclosure, dependence on a network can be further reduced, and traffic of a network and electric quantity of mobile terminals can be saved.
    Type: Application
    Filed: August 21, 2013
    Publication date: June 30, 2016
    Applicant: ZTE CORPORATION
    Inventors: Xinyu WU, Yan DING, Liang WU, Xiaoqiang CHEN
  • Publication number: 20160179495
    Abstract: An application packaging device and method are provided. The method includes: an installation package of an application is unzipped; each piece of channel information is respectively extracted from multiple pieces of acquired channel information; and packaging is performed according to each piece of extracted channel information and the unzipped installation package respectively to generate multiple installation packages respectively corresponding to each piece of channel information. The present invention solves the problem that the process of multi-channel packaging of the installation package of the application is tedious, increases the efficiency of the multi-channel packaging, and improves the user experience.
    Type: Application
    Filed: May 13, 2014
    Publication date: June 23, 2016
    Inventors: Xinyu WU, Yan DING, Xiaoqiang CHEN
  • Patent number: 8943079
    Abstract: Methods and systems are disclosed for anonymizing a dataset that correlates a set of entities with respective attributes. The method comprises determine clusters of similar entities. Determining the clusters comprises (1) partitioning the entities into a first group with similar attributes to one another and a complement group of entities with similar attributes to one another and (2) recursively repeating the partitioning on the groups until every group meets one or more criteria. The partitioning a group comprises choosing a reference entity from the group, determining a symmetric set of attributes based on the reference entity attributes and on an average of the group's attributes, and assigning each entity to the first or second group depending on whether its attributes are more similar to those of the reference user or to those of the symmetric set.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: January 27, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Vincent Huang, Xiaoqiang Chen
  • Publication number: 20140143359
    Abstract: A method of providing information to a prospective user is performed at a server having one or more processors and memory storing programs to be executed by the processors, the method including receiving audio feature information and location information from a client device, wherein the audio feature information is extracted from an audio signal received by the client device and the location information identifies a current location of the client device; comparing predefined audio feature information with the received audio feature information and comparing predefined location information with the received location information; and pushing predefined information to the client device from the server if there is a match of both comparisons made at the server.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 22, 2014
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Kai XIE, Bo WEN, Xiaoqiang CHEN
  • Publication number: 20140136637
    Abstract: A computer-implemented method of providing matching information to prospective first and second users is performed at a server, the method including: receiving first audio data and first user information; receiving second audio data, and second user information; storing a first timestamp of the first audio data and first user information and a second timestamp of the second audio data and second user information; performing analysis processing on the first audio data to obtain first feature information, and performing analysis processing on the second audio data to obtain second feature information; judging whether the first timestamp and the second timestamp and the first feature information and the second feature information match; and if the first and second times of receipt and the first and second feature information match, sending the first user information to the second user and sending, by the server, the second user information to the first user.
    Type: Application
    Filed: November 26, 2013
    Publication date: May 15, 2014
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: XIAOQIANG CHEN, KAI XIE, BO WEN
  • Publication number: 20130198188
    Abstract: Methods and systems are disclosed for anonymizing a dataset that correlates a set of entities with respective attributes. The method comprises determine clusters of similar entities. Determining the clusters comprises (1) partitioning the entities into a first group with similar attributes to one another and a complement group of entities with similar attributes to one another and (2) recursively repeating the partitioning on the groups until every group meets one or more criteria. The partitioning a group comprises choosing a reference entity from the group, determining a symmetric set of attributes based on the reference entity attributes and on an average of the group's attributes, and assigning each entity to the first or second group depending on whether it's attributes are more similar to those of the reference user or to those of the symmetric set.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 1, 2013
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Vincent HUANG, Xiaoqiang Chen
  • Patent number: 6563835
    Abstract: A connection oriented switch, for example, an ATM switch, achieves scalable performance and enhanced reliability through a call processing architecture in which call processing functions are distributed to each network interface module rather than centralized in a call control module. Each network interface module has its own dedicated processor module that performs certain call processing tasks to off-load the processing burden from the call control module. Depending on the degree of processing power distribution, three embodiments include a distributed signaling architecture, a distributed call control architecture, and a distributed routing architecture.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: May 13, 2003
    Assignee: Lucent Technologies Inc.
    Inventor: Xiaoqiang Chen
  • Patent number: 6201793
    Abstract: An improved packet delay estimation method results from an indirect measurement method that employs an estimation method based on sampled lengths of queues and measured traffic. A complex system of queues sharing the same constant rate server and driven by a non-trivial scheduling scheme is split into logical clusters of queues. The method estimates packet delay based on a two-level approximation. On the first level of approximation, effects of the fact that the server is shared by other clusters is approximated by an equivalent reduction of the service rate. On the second level of approximation, individual queue lengths within a cluster are sampled and, based on the knowledge of the scheduling discipline, used to obtain the upper and lower bounds on the occupancy of the equivalent FIFO buffer. Estimate of the delay is found based on the effective buffer occupancy, and the effective service capacity.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: March 13, 2001
    Assignee: Lucent Technologies
    Inventors: Xiaoqiang Chen, Denis Andreyevich Khotimsky
  • Patent number: 6188674
    Abstract: A simple and efficient method for packet loss measurement in high-speed switches is achieved by identifying traffic flows in the ingress side of switches, and measuring packets losses for the identifies flows on the egress side of the switches. Specifically, on the ingress side of the switch, the last packet of each fixed size incoming packet block is marked to make it distinct from other packets in the block. On the egress side, the packet flow is monitored and the packets are counted using the block size as a counting modulo. The value of this counter at the receipt of a marked packets is used to update the number of packets that do not make their way across the switch. The method is applicable to multicast as well as to unicast packets. This method is simple in that it only requires two marking counters per distinct flow, one at ingress and one at egress, and two other counters at the egress per each measured flow.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: February 13, 2001
    Inventors: Xiaoqiang Chen, Denis Andreyevich Khotimsky
  • Patent number: 6144666
    Abstract: In an asynchronous transfer mode (ATM) communications system, all ATM switches in a multicast connection perform virtual path (VP) switching except those merge points which perform virtual channel (VC) switching to avoid VCI collisions. The merge points are ATM switches which can merge ATM traffic from at least two incoming links into an outgoing link. In a second approach, each merge point in a multicast connection performs VP switching, and dynamically dispenses VC switching when a VCI collision is detected. Specifically, to prevent further VCI collision, incoming ATM cells indicated by an odd VPI value are VC switched by the merge point while those indicated by an even VPI value are VP switched thereby.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: November 7, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Xiaoqiang Chen, Vijay Pochampalli Kumar, Cauligi Srinivasa Raghavendra, Ramanathan Venkateswaran
  • Patent number: 6052361
    Abstract: A method for allocating a fair bit rate for an ABR service. Forward and backward RM cells traversing a link 1 are received at an ATM switch. Both the forward and backward RM cells are associated with a session, with the forward RM cells being transmitted from a source to a destination and the backward RM cells being transmitted from the destination to the source. An advertised rate .gamma..sub.l for link 1 is updated when a backward RM cell associated the session is received based on a change in a bottleneck bandwidth .DELTA..lambda. of the session and a change in a bottleneck status .DELTA..beta. of the session. The explicit rate .lambda..sup.ER contained in the backward RM cell is rewritten as a minimum of the advertised rate .gamma..sub.l and the explicit rate .lambda..sup.ER. The backward RM cell is then transmitted to the source of the RM cell.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: April 18, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Nirwan Ansari, Ambalavanar Arulambalam, Xiaoqiang Chen