Patents by Inventor Jiajia Chen

Jiajia 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).

  • Publication number: 20190353790
    Abstract: A ranging method based on a laser radar system, a device and a readable storage medium are provided. The ranging method includes receiving ranging data obtained by measuring via a plurality of laser radars of a laser radar system, where the ranging data includes distances between the laser radars and obstacles in measurement ranges of the laser radars; establishing a three-dimensional coordinate model according to the ranging data; and determining a distance between a target unmanned device and each obstacle according to the three-dimensional coordinate model. The ranging method can realize a ranging calibration task for a larger distance range, thereby effectively improving a calibration efficiency and accuracy of the visual image algorithm, compared with the existing method of ranging calibration of the visual image algorithm by a single laser radar.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 21, 2019
    Applicant: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Jiajia CHEN, Ji WAN, Tian XIA
  • Publication number: 20190339707
    Abstract: An automobile image processing method and apparatus, and a readable storage medium are provided. A to-be-processed image collected by a collecting point of automobile images is obtained, where the collecting point is provided on a self-driving device; the to-be-processed image is processed using a deep learning model, and a state parameter of an automobile in the to-be-processed image is outputted; and an automobile behavior in the to-be-processed image is determined according to the state parameter. Thus the to-be-processed image collected by the collecting point can be processed using the deep learning model to obtain the state parameter for determining the automobile behavior, and thus the automobile behavior can be obtained, thereby providing a foundation and a basis for the self-driving device to adjust the driving strategy according to the road condition.
    Type: Application
    Filed: July 18, 2019
    Publication date: November 7, 2019
    Applicant: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Jiajia Chen, Ji Wan, Tian Xia
  • Publication number: 20190340783
    Abstract: The present application provides autonomous vehicle based position detection method and apparatus, a device and a medium, where the method includes: identifying an obtained first visual perception image according to an underlying neural network layer in a slender convolution kernel neural network model to determine feature information of the target linear object image, and identifying the feature information of the target linear object image by using a high-level neural network layer in the slender convolution kernel neural network model to determine size information of the target linear object image; further, matching the size information of the target linear object image with preset coordinate system map information to determine a position of the autonomous vehicle. Embodiments of the present application can accurately determine the position of the autonomous vehicle.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 7, 2019
    Applicant: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Jiajia CHEN, Ji WAN, Tian XIA
  • Publication number: 20190218134
    Abstract: Provided is a silicate article comprising SiO2, Al2O3, Na2O, K2O, MgO and ZrO2, wherein the content of Al2O3 is 15-28 parts by weight, the content of Na2O is 13-25 parts by weight, the content of K2O is 6-15 parts by weight, the content of MgO is 7-16 parts by weight, and the content of ZrO2 is 0.1-5 parts by weight, relative to 100 parts by weight of SiO2; and M is 5-13, as calculated by the following formula: M=P1*wt (Na2O)+P2*wt (K2O)+P3*wt (MgO)+P4*wt (ZrO2)?P5*wt (Al2O3)*wt (Al2O3). In the formula, P1 has a value of 0.53, P2 has a value of 0.153, P3 has a value of 0.36, P4 has a value of 0.67, and P5 has a value of 0.018.
    Type: Application
    Filed: August 10, 2017
    Publication date: July 18, 2019
    Applicant: TUNGHSU GROUP CO., LTD.
    Inventors: Debao LI, Qing LI, Zihan SHEN, Feng GUO, Zhonghua WANG, Jiajia CHEN, Feng GUO
  • Publication number: 20190185083
    Abstract: Provided is a damper for a semi-active energy regenerative suspension based on hybrid excitation. The damper includes: an upper lifting lug, a dustcover, a lower lifting lug, a hydraulic shock absorber, and a hybrid excitation mechanism, wherein the hydraulic shock absorber is configured to provide a constant viscous damping coefficient, and wherein the hybrid excitation mechanism is configured to generate an adjustable electromagnetic damping force, to transform the vibration energy into electrical energy, and to storage the electrical energy. Also provided is a method for determining the sizes of the damper. The damper which has a simple structure, balances the vibration isolation property and energy regenerative property of the vehicle suspension, and provides a fail-safe function. Furthermore, the method for determining the sizes of the damper is easy and practical to implement, has definite steps and produces drastically optimized results.
    Type: Application
    Filed: August 26, 2016
    Publication date: June 20, 2019
    Inventors: Ruochen WANG, Wei YU, Renkai DING, Long CHEN, Jiajia WANG
  • Patent number: 10097269
    Abstract: A Passive Optical Networks (PONs) structure and a remote node in such a structure constituting at least a part of a backhaul network for supporting a Radio Access Network, in which a number of radio base stations are connected to optical networks units (ONUs) of said PONs structure. The ONUs of said PONs structure are grouped between separate PONs of said PONs structure. The ONUs of a separate PON are interconnected passively through a remote node of the PON in order to separate inter base station traffic of X2 interfaces from uplink and downlink data traffic of S1 interface heading from/to a core network via an optical line terminal (OLT). The remote node comprises of power splitter for enabling interconnection between ONUs of different PONs of said PONs structure.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: October 9, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mozhgan Mahloo, Jiajia Chen, Lena Wosinska
  • Patent number: 9887770
    Abstract: A first transceiver and a method performed by the first transceiver for monitoring a fiber cable. The first transceiver is connectable to a second transceiver by the fiber cable. The transceivers employ SCM analog modulation where baseband is dedicated for monitoring and the subcarriers are dedicated for data transmission. The method comprises receiving, from a device, at least one electromagnetic data signal to be transmitted towards the second transceiver on the fiber cable, and shifting the at least one data signal in the frequency domain. The method further comprises generating an electromagnetic test signal in a base band, combining the at least one data signal and the generated test signal, and modulating the combined data signal and test signal to respective optical carrier. The method further comprises transmitting the modulated data signal and generated test signal on the fiber cable towards the second transceiver.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: February 6, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Patryk Urban, Jiajia Chen, Renan Pereira Almeida
  • Publication number: 20170288777
    Abstract: A Passive Optical Networks (PONs) structure and a remote node in such a structure constituting at least a part of a backhaul network for supporting a Radio Access Network, in which a number of radio base stations are connected to optical networks units (ONUs) of said PONs structure. The ONUs of said PONs structure are grouped between separate PONs of said PONs structure. The ONUs of a separate PON are interconnected passively through a remote node of the PON in order to separate inter base station traffic of X2 interfaces from uplink and downlink data traffic of S1 interface heading from/to a core network via an optical line terminal (OLT). The remote node comprises of power splitter for enabling interconnection between ONUs of different PONs of said PONs structure.
    Type: Application
    Filed: September 8, 2014
    Publication date: October 5, 2017
    Inventors: Mozhgan MAHLOO, Jiajia CHEN, Lena WOSINSKA
  • Patent number: 9722802
    Abstract: Embodiments of the present invention disclose a method, an apparatus, and a system for increasing network security. The method for increasing network security includes: receiving, by a network management system, a certificate message reported by a network element; generating, by the network management system, a first list; when determining that a certificate corresponding to certificate information in the first list needs to be revoked, generating, by the network management system, a certificate revocation request file according to the certificate information, and removing the certificate information in the first list from the first list; and sending, by the network management system, the certificate revocation request file to a public key infrastructure (PKI) system.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: August 1, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenjun Jin, Ying Xiong, Jiajia Chen, Jiangsheng Wang
  • Publication number: 20170111111
    Abstract: A first transceiver and a method performed by the first transceiver for monitoring a fibre cable. The first transceiver is connectable to a second transceiver by the fibre cable. The transceivers employ SCM analogue modulation where baseband is dedicated for monitoring and the subcarriers are dedicated for data transmission. The method comprises receiving, from a device, at least one electromagnetic data signal to be transmitted towards the second transceiver on the fibre cable, and shifting the at least one data signal in the frequency domain. The method further comprises generating an electromagnetic test signal in a base band, combining the at least one data signal and the generated test signal, and modulating the combined data signal and test signal to respective optical carrier. The method further comprises transmitting the modulated data signal and generated test signal on the fibre cable towards the second transceiver.
    Type: Application
    Filed: March 3, 2014
    Publication date: April 20, 2017
    Applicant: Telefonaktiebolaget LM Ericsson (PUBL)
    Inventors: Patryk URBAN, Jiajia CHEN, Renan PEREIRA ALMEIDA
  • Patent number: 9561394
    Abstract: A fitness equipment spring counterweights balancer, comprising hand wheel, lead screw, upper and lower frame beams, upper and lower pulley blocks, spring guiding pillar, upper and lower spring seats, at least one spring, vortex track, big wheel, steel wire rope connecting the pulley block and the vortex track, steel wire rope which connects both the big wheel and fitness equipment. The springs are arranged between upper and lower spring seats. After the spring guiding pillar passes through the springs and the upper and lower spring seats, the both ends of the spring guiding pillar are connected with the upper and lower frame beams. One end of the steel wire rope connecting the pulley block and the vortex track is mounted on one side of the lower pulley block. One end of the steel wire rope connecting the big wheel and fitness equipment is mounted on the big wheel.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: February 7, 2017
    Inventor: Jiajia Chen
  • Patent number: 9544669
    Abstract: It is disclosed a remote node connectable to multiple feeder fibers from one or more central offices, COs, of a wavelength division multiplexing-based passive optical network, WDM-based PON. The remote node comprises one or more splitters each configured to receive a monitoring signal on a connected feeder fiber and to split the monitoring signal into split monitoring signals, wherein the monitoring signal uses one wavelength at a time out of a group of different wavelengths, and an arrayed waveguide grating, AWG, with output ports connectable to drop fibers. The AWG is configured to route the split monitoring signals to output ports of said AWG based on a currently used wavelength of said group of different wavelengths, for supervising drop fibers connected to the output ports. Also, a method for a remote node in the WDM-based PON, of routing a monitoring signal, is disclosed.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: January 10, 2017
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Patryk Urban, Jiajia Chen
  • Publication number: 20160332020
    Abstract: A fitness equipment spring counterweights balancer, comprising hand wheel, lead screw, upper and lower frame beams, upper and lower pulley blocks, spring guiding pillar, upper and lower spring seats, at least one spring, vortex track, big wheel, steel wire rope connecting the pulley block and the vortex track, steel wire rope which connects both the big wheel and fitness equipment. The springs are arranged between upper and lower spring seats. After the spring guiding pillar passes through the springs and the upper and lower spring seats, the both ends of the spring guiding pillar are connected with the upper and lower frame beams. One end of the steel wire rope connecting the pulley block and the vortex track is mounted on one side of the lower pulley block. One end of the steel wire rope connecting the big wheel and fitness equipment is mounted on the big wheel.
    Type: Application
    Filed: December 30, 2014
    Publication date: November 17, 2016
    Inventor: Jiajia CHEN
  • Patent number: 9331811
    Abstract: Wireless communication systems are provided including a transmitter and a receiver. The transmitter is configured to transmit a first polarized signal and a second polarized signal to the receiver, and in accordance with an instruction from the receiver, halt transmission of the second polarized signal. The receiver is configured to receive the polarized signals from the transmitter, determine whether or not the reception quality of the second polarized signal is below a threshold, and if so, instruct the transmitter to halt transmission of the second polarized signal.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: May 3, 2016
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON
    Inventors: Jiajia Chen, Lena Wosinska
  • Publication number: 20150326956
    Abstract: It is disclosed a remote node connectable to multiple feeder fibers from one or more central offices, COs, of a wavelength division multiplexing-based passive optical network, WDM-based PON. The remote node comprises one or more splitters each configured to receive a monitoring signal on a connected feeder fiber and to split the monitoring signal into split monitoring signals, wherein the monitoring signal uses one wavelength at a time out of a group of different wavelengths, and an arrayed waveguide grating, AWG, with output ports connectable to drop fibers. The AWG is configured to route the split monitoring signals to output ports of said AWG based on a currently used wavelength of said group of different wavelengths, for supervising drop fibers connected to the output ports. Also, a method for a remote node in the WDM-based PON, of routing a monitoring signal, is disclosed.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 12, 2015
    Inventors: Patryk URBAN, Jiajia CHEN
  • Publication number: 20150326401
    Abstract: Embodiments of the present invention disclose a method, an apparatus, and a system for increasing network security. The method for increasing network security includes: receiving, by a network management system, a certificate message reported by a network element; generating, by the network management system, a first list; when determining that a certificate corresponding to certificate information in the first list needs to be revoked, generating, by the network management system, a certificate revocation request file according to the certificate information, and removing the certificate information in the first list from the first list; and sending, by the network management system, the certificate revocation request file to a public key infrastructure (PKI) system.
    Type: Application
    Filed: July 21, 2015
    Publication date: November 12, 2015
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenjun JIN, Ying XIONG, Jiajia CHEN, Jiangsheng WANG
  • Publication number: 20150294011
    Abstract: An objective of the present invention is providing a method and apparatus for providing recommended information. A method according to the present invention comprises steps of: determining, based on one or more pieces of content information in one or more webpages, whether the one or more pieces of content information may be used as recommended information, respectively; obtaining feature information of the recommended information if the content information is recommended information; determining ordering information of the each piece of recommended information based on the feature information of each piece of recommended information; wherein the method further comprises the following step: if a user's browsing operation on the webpage corresponds to at least one piece of recommended information, presenting the at least one piece of recommended information.
    Type: Application
    Filed: December 31, 2014
    Publication date: October 15, 2015
    Inventors: Chi TANG, Huadong LI, Weiyu CHEN, Jiajia CHEN, Xunliang CAI, Yang SONG
  • Patent number: 9020349
    Abstract: An arrangement at a Remote Node, a Remote Node, a Central Office, a WDM-PON and a method in an arrangement at a Remote Node, and a method in a Central Office are provided for supervision of the WDM-PON. The arrangement comprises at least one filter connected to the feeder fiber links and adapted to separate a data signal and an original OTDR signal received on either of the feeder fiber links. Further, the arrangement comprises a first splitter adapted to receive, from the at least one filter, the original OTDR signal, to split the original OTDR signal into a plurality of OTDR sub-signals and to output, to an N*M AWG, the plurality of OTDR sub-signals. The at least one filter is further adapted to output the original OTDR signal to the first splitter and to output the data signal to the AWG, thereby enabling supervision of the WDM-PON.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 28, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Jiajia Chen, Patryk Urban
  • Publication number: 20130259466
    Abstract: An arrangement at a Remote Node, a Remote Node, a Central Office, a WDM-PON and a method in an arrangement at a Remote Node, and a method in a Central Office are provided for supervision of the WDM-PON. The arrangement comprises at least one filter connected to the feeder fibre links and adapted to separate a data signal and an original OTDR signal received on either of the feeder fibre links. Further, the arrangement comprises a first splitter adapted to receive, from the at least one filter, the original OTDR signal, to split the original OTDR signal into a plurality of OTDR sub-signals and to output, to an N*M AWG, the plurality of OTDR sub-signals. The at least one filter is further adapted to output the original OTDR signal to the first splitter and to output the data signal to the AWG, thereby enabling supervision of the WDM-PON.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 3, 2013
    Applicant: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Jiajia Chen, Patryk Urban
  • Publication number: 20120251108
    Abstract: Wireless communication systems are provided including a transmitter and a receiver. The transmitter is configured to transmit a first polarized signal and a second polarized signal to the receiver, and in accordance with an instruction from the receiver, halt transmission of the second polarized signal. The receiver is configured to receive the polarized signals from the transmitter, determine whether or not the reception quality of the second polarized signal is below a threshold, and if so, instruct the transmitter to halt transmission of the second polarized signal.
    Type: Application
    Filed: October 26, 2009
    Publication date: October 4, 2012
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Jiajia Chen, Lena Wosinska