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).
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Publication number: 20200186840Abstract: 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: ApplicationFiled: December 6, 2019Publication date: June 11, 2020Inventors: Yinli XIA, Zhizhong ZHANG
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Patent number: 10641538Abstract: 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: GrantFiled: June 20, 2019Date of Patent: May 5, 2020Inventors: Longhua Tang, Zhizhong Zhang
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Publication number: 20200132356Abstract: 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: ApplicationFiled: June 20, 2019Publication date: April 30, 2020Inventors: Longhua TANG, Zhizhong ZHANG
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Patent number: 10637684Abstract: 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: GrantFiled: October 12, 2016Date of Patent: April 28, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Peiiliang Dong, Zhizhong Zhang, Bozena Erdmann, Armand Michel Marie Lelkens, Ludovicus Marinus Gerardus Maria Tolhuozen
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Patent number: 10624017Abstract: 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: GrantFiled: January 3, 2017Date of Patent: April 14, 2020Assignee: 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
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Patent number: 10536864Abstract: 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: GrantFiled: December 7, 2016Date of Patent: January 14, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Armand Michel Marie Lelkens, Xiangyu Wang, Rick Van Haasen, Zhizhong Zhang, Peiliang Dong, Rong Fan
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Patent number: 10505839Abstract: 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: GrantFiled: September 27, 2016Date of Patent: December 10, 2019Assignee: SIGNIFY HOLDING B.V.Inventors: Xiaodong Ge, Zhizhong Zhang, Peiliang Dong, Jun Jun Zhang
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Publication number: 20190306730Abstract: 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: ApplicationFiled: March 31, 2019Publication date: October 3, 2019Inventors: Zhizhong ZHANG, Hanzhong HUANG, Song XIE, Xiaoling HU, Linlin FENG, Lilan LIU, Lei ZHU
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Publication number: 20190132738Abstract: 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: ApplicationFiled: April 12, 2017Publication date: May 2, 2019Applicant: PHILIPS LIGHTING HOLDING B.V.Inventors: ZHIZHONG ZHANG, HOWARD QUE, SHUMING HUANG, LINCHUN DU, JUNJUN ZHANG, MARK HENRICUS VERBERKT
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Patent number: 10278109Abstract: 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: GrantFiled: March 8, 2017Date of Patent: April 30, 2019Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Zhizhong Zhang, Li Yu, Fang Cheng, Haonan Hu
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Patent number: 10243689Abstract: 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: GrantFiled: May 22, 2015Date of Patent: March 26, 2019Assignee: SIGNIFY HOLDING B.V.Inventors: Zhizhong Zhang, Koen Johanna Guillaume Holtman, Peilang Dong, Jun Yao, Hai Tao Liu, Gang Wang, Dunfa Chen
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Publication number: 20190028953Abstract: 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: ApplicationFiled: January 3, 2017Publication date: January 24, 2019Applicant: 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
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Publication number: 20180359649Abstract: 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 communiType: ApplicationFiled: December 7, 2016Publication date: December 13, 2018Inventors: ARMAND MICHEL MARIE LELKENS, XIANGYU WANG, RICK VAN HAASEN, ZHIZHONG ZHANG, PEILIANG DONG, RONG FAN
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Publication number: 20180309593Abstract: 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: ApplicationFiled: October 12, 2016Publication date: October 25, 2018Inventors: PEIILIANG DONG, ZHIZHONG ZHANG, BOZENA ERDMANN, ARMAND MICHEL MARIE LELKENS, LUDOVICUS MARINUS GERARDUS MARIA TOLHUOZEN
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Publication number: 20180302317Abstract: 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: ApplicationFiled: September 27, 2016Publication date: October 18, 2018Inventors: XIAODONG GE, ZHIZHONG ZHANG, PEILIANG DONG, JUN JUN ZHANG
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Patent number: 10039043Abstract: A method of selection and/or handover for multi radio access technologies in a 5G cellular network. The method includes: 1) collecting, by a user terminal, load information of a candidate Access Point (AP) or an Evolved Node (H)eNB via a local entity of Access Network Discovery and Selection Function (L-ANDSF); 2) checking, by the user terminal, a Received Signal Strength (RSS) value of the candidate AP or (H)eNB, a Reference Signal Received Quality (RSRQ) and a Service Sensitivity to Latency; 3) based on the above information, evaluating suitability of an available radio access technology; 4) triggering, by a specific triggering event, a fuzzy logic controller, to select a most appropriate radio access technology for each session; and 5) establishing a new session to perform admission control or handover.Type: GrantFiled: January 4, 2017Date of Patent: July 31, 2018Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Zhizhong Zhang, Linlin Feng, Haonan Hu, Fang Cheng
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Publication number: 20170207877Abstract: 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: ApplicationFiled: May 22, 2015Publication date: July 20, 2017Inventors: ZHIZHONG ZHANG, KOEN JOHANNA GUILLAUME HOLTMAN, PEILANG DONG, JUN YAO, HAI TAO LIU, GANG WANG, DUNFA CHEN
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Publication number: 20170181052Abstract: 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: ApplicationFiled: March 8, 2017Publication date: June 22, 2017Inventors: Zhizhong ZHANG, Li YU, Fang CHENG, Haonan HU
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Publication number: 20170118689Abstract: A method of selection and/or handover for multi radio access technologies in a 5G cellular network. The method includes: 1) collecting, by a user terminal, load information of a candidate Access Point (AP) or an Evolved Node (H)eNB via a local entity of Access Network Discovery and Selection Function (L-ANDSF); 2) checking, by the user terminal, a Received Signal Strength (RSS) value of the candidate AP or (H)eNB, a Reference Signal Received Quality (RSRQ) and a Service Sensitivity to Latency; 3) based on the above information, evaluating suitability of an available radio access technology; 4) triggering, by a specific triggering event, a fuzzy logic controller, to select a most appropriate radio access technology for each session; and 5) establishing a new session to perform admission control or handover.Type: ApplicationFiled: January 4, 2017Publication date: April 27, 2017Inventors: Zhizhong ZHANG, Linlin FENG, Haonan HU, Fang CHENG