Patents by Inventor Zhizhong ZHANG

Zhizhong ZHANG 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: 11388597
    Abstract: Disclosed are systems and methods for authenticating a wireless module. A method comprises the steps of: (i) generating (1332), by the wireless module (112A), a first encryption value, and retrieving a unique identifier of the wireless module from memory; (ii) verifying (1334), by the wireless module, the generated first encryption value and retrieved unique identifier; (iii) sending (1336), by the wireless module, the retrieved unique identifier and a second encryption value to the gateway (110A); (iv) verifying (1338), by the gateway, the received unique identifier and second encryption value, wherein verifying the second encryption value authenticates the wireless module; (v) sending (1340), by the gateway, a third encryption value to the wireless module; and (vi) verifying (1342), by the wireless module, the received third encryption value, wherein verifying the third encryption value authenticates the gateway.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: July 12, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Zhizhong Zhang, Howard Que, Shuming Huang, Linchun Du, Junjun Zhang, Mark Henricus Verberkt
  • Patent number: 11259176
    Abstract: A node device (4) in a network (1) of communicatively interconnected node devices (4) having limited data processing and storage resources, such as a mesh network (1) of node devices (4), receives an inquiry message of the type ‘find the best match’ for information to be located at a node device (4). The inquiry message comprises benchmark data relating to the information to be located. The receiving node device updates the message based on a comparison of the content in the latest received message and the node's locally stored information. The locally stored information is derived from previous received messages from other node devices (4) in the network (1) and information available at the receiving node device. When no update is required, no message is broadcasted by a node device (4) and the local copy at the node devices involved converges in a few broadcasts to a static content from which the information sought can be located in the network (1).
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: February 22, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Peiliang Dong, Zhizhong Zhang, Weiwei Lu, Junjun Zhang
  • Publication number: 20210385152
    Abstract: In a network (1) of communicatively interconnected (9) node devices (2-8), such as a Zigbee™ enabled mesh network, application data, such as data from or to sensors (12-17) operatively connected (17; 18) to the node devices (2-8), are periodically exchanged by attaching the application data to periodically exchanged operational messages that are to be transmitted by a node device (2-8) in the network (1), such as the link status command messages according to the Zigbee protocol.
    Type: Application
    Filed: July 30, 2019
    Publication date: December 9, 2021
    Inventors: Jun YAO, Gang WANG, Rong FAN, Zhizhong ZHANG, Dunfa CHEN
  • Patent number: 10958946
    Abstract: The invention provides a live time-shifted video play-continuing method during disconnection and an IPTV player. The method comprises: connecting to a network to obtain a data stream of a video; playing the data stream through a player to obtain a play starting time of the video; acquiring a played duration of the video when the network is disconnected; acquiring a time point of playing interruption of the video according to the play starting time and the played duration when the network is connected again; and returning to the time point through the player, and continuing to play the video at the time point. The beneficial effects of the invention are as follows: directly performing the breakpoint continuous playing of the live time-shifted video from the network disconnection time point after the network is reconnected.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: March 23, 2021
    Inventors: Yinli Xia, Zhizhong Zhang
  • Publication number: 20210018250
    Abstract: A portable refrigerator includes a main housing, a refrigerator cover, a cooling mechanism, a rechargeable battery pack and a control unit. The cooling mechanism includes heat exchanging tubes, a compressor, an evaporator and a condenser connected to the evaporator and the compressor. The rechargeable battery pack is detachably attached on a power compartment of the main housing. The control unit is supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism. A to predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 21, 2021
    Inventors: Longhua TANG, Zhizhong ZHANG
  • Publication number: 20200344596
    Abstract: A node device (4) in a network (1) of communicatively interconnected node devices (4) having limited data processing and storage resources, such as a mesh network (1) of node devices (4), receives an inquiry message of the type ‘find the best match’ for information to be located at a node device (4). The inquiry message comprises benchmark data relating to the information to be located. The receiving node device updates the message based on a comparison of the content in the latest received message and the node's locally stored information. The locally stored information is derived from previous received messages from other node devices (4) in the network (1) and information available at the receiving node device. When no update is required, no message is broadcasted by a node device (4) and the local copy at the node devices involved converges in a few broadcasts to a static content from which the information sought can be located in the network (1).
    Type: Application
    Filed: November 29, 2018
    Publication date: October 29, 2020
    Inventors: Peiliang DONG, Zhizhong ZHANG, Weiwei LU, Junjun ZHANG
  • Publication number: 20200333063
    Abstract: A portable refrigerator includes a main housing, a refrigerator cover, a cooling mechanism, a rechargeable battery pack and a control unit. The cooling mechanism includes heat exchanging tubes, a compressor, an evaporator and a condenser connected to the evaporator and the compressor. The rechargeable battery pack is detachably attached on a power compartment of the main housing. The control unit is supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism. A to predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
    Type: Application
    Filed: April 23, 2020
    Publication date: October 22, 2020
    Inventors: Longhua Tang, Zhizhong Zhang
  • Publication number: 20200186840
    Abstract: The invention provides a live time-shifted video play-continuing method during disconnection and an IPTV player. The method comprises: connecting to a network to obtain a data stream of a video; playing the data stream through a player to obtain a play starting time of the video; acquiring a played duration of the video when the network is disconnected; acquiring a time point of playing interruption of the video according to the play starting time and the played duration when the network is connected again; and returning to the time point through the player, and continuing to play the video at the time point. The beneficial effects of the invention are as follows: directly performing the breakpoint continuous playing of the live time-shifted video from the network disconnection time point after the network is reconnected.
    Type: Application
    Filed: December 6, 2019
    Publication date: June 11, 2020
    Inventors: Yinli XIA, Zhizhong ZHANG
  • Patent number: 10641538
    Abstract: A portable refrigerator includes a main housing, a refrigerator cover, a cooling mechanism, a rechargeable battery pack and a control unit. The cooling mechanism includes heat exchanging tubes, a compressor, an evaporator and a condenser connected to the evaporator and the compressor. The rechargeable battery pack is detachably attached on a power compartment of the main housing. The control unit is supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism. A predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: May 5, 2020
    Inventors: Longhua Tang, Zhizhong Zhang
  • Publication number: 20200132356
    Abstract: A portable refrigerator includes a main housing, a refrigerator cover, a cooling mechanism, a rechargeable battery pack and a control unit. The cooling mechanism includes heat exchanging tubes, a compressor, an evaporator and a condenser connected to the evaporator and the compressor. The rechargeable battery pack is detachably attached on a power compartment of the main housing. The control unit is supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism. A predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
    Type: Application
    Filed: June 20, 2019
    Publication date: April 30, 2020
    Inventors: Longhua TANG, Zhizhong ZHANG
  • Patent number: 10637684
    Abstract: The invention provides a mesh network bridging device adapted to allow a resource restricted device to pass and/or receive signals from a mesh network. The mesh network bridging device is operable over both a first communication channel, so as to communicate with the resource restricted device, and a second communication channel, so as to communicate with the mesh network. The mesh network bridging device is adapted to switch between a first and second mode of operation, associated with the first and second communication channel respectively, so as to alternately communicate with the resource restricted device and the mesh network bridging device. The mesh network bridging device may thereby act as a bridge between the resource restricted device and the mesh network bridging device.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: April 28, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Peiiliang Dong, Zhizhong Zhang, Bozena Erdmann, Armand Michel Marie Lelkens, Ludovicus Marinus Gerardus Maria Tolhuozen
  • Patent number: 10624017
    Abstract: The present invention relates to a method for operating a communication apparatus in a network comprising a plurality of communication nodes, upon reception of a message at the communication apparatus, the communication apparatus starting a retransmission delay being selected at random from a retransmission delay interval, said retransmission delay interval being dependent on at least one of a status of the communication apparatus and a property of the received message, the communication apparatus monitors retransmissions of said message by other communication nodes during said retransmission delay and the communication apparatus transmitting a retransmission of said message at the expiry of said retransmission delay if a statistic based on the retransmissions of said message by other communication nodes is below a threshold.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: April 14, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Xiangyu Wang, Armand Michel Marie Lelkens, Rick Van Haasen, Zhizhong Zhang, Peiliang Dong, Rong Fan, Peter Fitski, Emmanuel David Lucas Michael Frimout, Robert Cornelis Houtepen
  • Patent number: 10536864
    Abstract: The present invention is a method of managing a neighbor table in a communication apparatus. The method includes the steps of the communication apparatus maintaining a neighbor table comprising a plurality of neighboring table entries corresponding to respective neighboring nodes being communication nodes in communication range of the communication apparatus. Upon determination that the neighbor table capacity has reached a threshold, replacing a first neighbor table entry corresponding to a first neighboring node from the neighbor table by a new neighbor table entry corresponding to a new neighboring node based on the determination that the new neighboring node is a communication partner.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: January 14, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Armand Michel Marie Lelkens, Xiangyu Wang, Rick Van Haasen, Zhizhong Zhang, Peiliang Dong, Rong Fan
  • Patent number: 10505839
    Abstract: The present invention relates to a method for routing messages through a mesh network comprising a plurality of nodes, wherein a message is send from a sending node to a receiving node. The method comprises the steps of defining a routing table designating a path from a source node to a destination node through the mesh network, and defining a neighbor table listing one or more neighbor nodes from the plurality of nodes which are in the neighborhood of the sending node. If the destination node is not in the neighbor table of the sending node, the message is transmitted by the sending node to a receiving node adapted to forward the message to the destination node in accordance with the routing table.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: December 10, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Xiaodong Ge, Zhizhong Zhang, Peiliang Dong, Jun Jun Zhang
  • Publication number: 20190306730
    Abstract: A data source simulation platform includes: a transmitting side and a receiving side. The transmitting side includes a parameter initializing module, a parameter calculation module, and a subframe data module. The receiving side includes a system function configuration module, a downlink initial synchronization module, an error control module, a time-frequency estimation module, and a data parsing module. The parameter initializing module is configured to construct simulation parameters, configure a subframe structure, and simulate a raw data block to be transmitted from a protocol data unit packet of a media access control layer to a physical layer. The parameter calculation module is configured to calculate set simulation parameters. The subframe data module is configured to provide independent data for an air-interface monitoring device, the data being in a modular design and independently corresponding to each submodule.
    Type: Application
    Filed: March 31, 2019
    Publication date: October 3, 2019
    Inventors: Zhizhong ZHANG, Hanzhong HUANG, Song XIE, Xiaoling HU, Linlin FENG, Lilan LIU, Lei ZHU
  • Publication number: 20190132738
    Abstract: Disclosed are systems and methods for authenticating a wireless module. A method comprises the steps of: (i) generating (1332), by the wireless module (112A), a first encryption value, and retrieving a unique identifier of the wireless module from memory; (ii) verifying (1334), by the wireless module, the generated first encryption value and retrieved unique identifier; (iii) sending (1336), by the wireless module, the retrieved unique identifier and a second encryption value to the gateway (110A); (iv) verifying (1338), by the gateway, the received unique identifier and second encryption value, wherein verifying the second encryption value authenticates the wireless module; (v) sending (1340), by the gateway, a third encryption value to the wireless module; and (vi) verifying (1342), by the wireless module, the received third encryption value, wherein verifying the third encryption value authenticates the gateway.
    Type: Application
    Filed: April 12, 2017
    Publication date: May 2, 2019
    Applicant: PHILIPS LIGHTING HOLDING B.V.
    Inventors: ZHIZHONG ZHANG, HOWARD QUE, SHUMING HUANG, LINCHUN DU, JUNJUN ZHANG, MARK HENRICUS VERBERKT
  • Patent number: 10278109
    Abstract: A method of 5G/WLAN vertical handover based on fuzzy logic control, the method including: 1) obtaining, by a mobile node, dynamic access-network information from a database of access network discovery and selection function; 2) from the obtained dynamic access-network information, sorting out and selecting an RSS, an available bandwidth, and a degree of user's preference for WLAN as performance parameters, and monitoring a real-time status of networks; 3) when the real-time status of the networks satisfies mandatory user-defined rules, executing a typical handover directly according to the user-defined rules; when the real-time status of the networks does not satisfy mandatory user-defined rules, triggering a vertical handover-decision procedure based on a fuzz logic mode; and 4) conducting adjustment and control, by the MN, by dynamically updating access-network information, changing rules and varying membership functions.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: April 30, 2019
    Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Zhizhong Zhang, Li Yu, Fang Cheng, Haonan Hu
  • Patent number: 10243689
    Abstract: This invention generally relates to interference mitigation, and more specifically to interference mitigation in wireless communications networks. The proposed solution takes advantage of the clear channel assessment (CCA) function used by WLAN networks. Hence, by jamming the interfering WLAN channel during a predetermined time period, the interfering WLAN network is forced to withhold transmissions on the WLAN interfering channel during a backoff period of time. The solution of the subject application makes use of this backoff period to enable a WPAN network to transmit critical information such as, but not limited to, a request for changing the current working frequency.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: March 26, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Zhizhong Zhang, Koen Johanna Guillaume Holtman, Peilang Dong, Jun Yao, Hai Tao Liu, Gang Wang, Dunfa Chen
  • Publication number: 20190028953
    Abstract: The present invention relates to a method for operating a communication apparatus in a network comprising a plurality of communication nodes, upon reception of a message at the communication apparatus, the communication apparatus starting a retransmission delay being selected at random from a retransmission delay interval, said retransmission delay interval being dependent on at least one of a status of the communication apparatus and a property of the received message, the communication apparatus monitors retransmissions of said message by other communication nodes during said retransmission delay and the communication apparatus transmitting a retransmission of said message at the expiry of said retransmission delay if a statistic based on the retransmissions of said message by other communication nodes is below a threshold.
    Type: Application
    Filed: January 3, 2017
    Publication date: January 24, 2019
    Applicant: Philips Lighting Holding B.V.
    Inventors: Xiangyu WANG, Armand Michel Marie LELKENS, Rick VAN HAASEN, Zhizhong ZHANG, Peiliang DONG, Rong FAN, Peter FITSKI, Emmanuel David Lucas M. FRIMOUT, Robert Cornelis HOUTEPEN
  • Publication number: 20180359649
    Abstract: The present invention relates to a method of managing a neighbor table in a communication apparatus the method comprising the steps of the communication apparatus maintaining a neighbor table comprising a plurality of neighboring table entries corresponding to respective neighboring nodes being communication nodes in communication range of the communication apparatus, said maintaining including, upon determination that the neighbor table capacity has reached a threshold, replacing a first neighbor table entry corresponding to a first neighboring node from the neighbor table by a new neighbor table entry corresponding to a new neighboring node based on the determination that the new neighboring node is a communication partner, wherein a communication node is defined as a communication partner if at least one the following conditions is met: condition a a message including the communication partner as source address has been received by the communication apparatus, or condition b a message including the communi
    Type: Application
    Filed: December 7, 2016
    Publication date: December 13, 2018
    Inventors: ARMAND MICHEL MARIE LELKENS, XIANGYU WANG, RICK VAN HAASEN, ZHIZHONG ZHANG, PEILIANG DONG, RONG FAN