Patents by Inventor Dajun Chen
Dajun 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: 20240122921Abstract: The present invention relates to methods for treating patients with cancer, including patients with hematological malignancy, wherein the method comprises administering to the patient a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt thereof, wherein R1 and R2 are as defined herein.Type: ApplicationFiled: September 25, 2023Publication date: April 18, 2024Inventors: Yifan ZHAI, Zi CHEN, Qian JIANG, Xiaojun HUANG, Wei LIU, Dajun YANG
-
Publication number: 20240115713Abstract: Disclosed are a polyethylene glycol conjugate drug, and a preparation method therefor and the use thereof. Specifically, the present invention relates to a polyethylene glycol conjugate drug represented by formula A or a pharmaceutically acceptable salt thereof, a method for preparing the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, an intermediate for preparing the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, and the use of the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof in the preparation of a drug.Type: ApplicationFiled: July 21, 2021Publication date: April 11, 2024Inventors: Gaoquan LI, Nian LIU, Yongchen PENG, Xiafan ZENG, Gang MEI, Sheng GUAN, Yang GAO, Shuai YANG, Yifeng YIN, Jie LOU, Huiyu CHEN, Kun QIAN, Yusong WEI, Qian ZHANG, Dajun LI, Xiaoling DING, Xiangwei YANG, Liqun HUANG, Xi LIU, Liwei LIU, Zhenwei LI, Kaixiong HU, Hua LIU, Tao TU
-
Publication number: 20240098831Abstract: Embodiments of the present application provide a unicast multicast conversion method and apparatus, and a processor-readable storage medium, wherein the unicast multicast conversion method comprises: receiving a Radio Resource Control (RRC) reconfiguration message sent by a first network node, when Multimedia Broadcast Multicast Service (MBMS) service data packets sent by the first network node are received through a multicast bearer and a User Equipment (UE) is in a connected state; reconstructing an MBMS Packet Data Convergence Protocol (MBMS PDCP) entity according to the RRC reconfiguration message; sending a reconfiguration completion message to the first network node so that the first network node converts the multicast bearer to a unicast bearer and sends the MBMS service data packets to the UE through the unicast bearer, the reconfiguration completion message being configured to characterize that reconstruction of the MBMS PDCP entity is accomplished by the UE; and receiving the MBMS service data packeType: ApplicationFiled: June 7, 2021Publication date: March 21, 2024Applicant: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Dajun ZHANG, Li CHEN
-
Patent number: 11627440Abstract: A method and device for improved audio intelligibility in a converged land mobile radio (LMR)/broadband (BB) communications system is provided. A converged portable radio operating as part of a talkgroup in the LMR/BB system checks for predetermined triggers during standby that could cause receive radios of the talkgroup to receive degraded audio. If such a trigger is detected then the converged portable radio switches from the LMR system to the BB system and transmits a notification including a change system message to the other converged portable radios of the talkgroup. The notification is transmitted prior to any push-to-talk audio being transmitted from the originating radio. The converged portable radio can transmit, via a push-to-talk switch, narrowband (NB) audio and wideband (WB) audio in parallel over the BB system to the talkgroup subsequent to the detection of triggers and the sending of the notification.Type: GrantFiled: February 28, 2022Date of Patent: April 11, 2023Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Mohd Syazani Abdul Aziz, Lisajane M Romer, Cesar D Aguilar, Harvey D Chambers, Dajun Chen
-
Patent number: 11540351Abstract: Systems and methods for broadband failover in land mobile radio networks. One method includes operating a first communication interface of a converged communication device to execute a first communication between the device and a first network using an LMR modality. The method includes determining a plurality of radio communication characteristic values for each of a plurality of sites of the first network and generating a fallback threshold for a home site of the device based on the plurality of radio communications characteristics. The method includes determining whether a current radio communication characteristic value associated with a home site of the device exceeds the fallback threshold, and, when the current radio communication characteristic value does not exceed the fallback threshold, operating a second communication interface of the converged communication device to execute a second communication between the device and a second network using a non-LMR modality.Type: GrantFiled: February 20, 2020Date of Patent: December 27, 2022Assignee: MOTOROLA SOLUTIONS, INC.Inventors: DaJun Chen, Andor Almasi, David R. Mills
-
Publication number: 20210385329Abstract: A device, method and system for scanning communication systems of different types is provided. A mobile device comprises: first and second transceivers to communicate first and second communication systems of different types; a memory storing first and second scan lists for scanning first and second channels on the first and second communication systems; and a controller configured to: communicate, using the first transceiver, an indication of the first and second scan lists to a gateway device configured as a proxy for the mobile device to communicate with the first communication systems; receive, using the first transceiver, from the gateway device, a reply indicating that the gateway device is capable of scanning the first communication systems using the first scan list, but is not capable of scanning the second communication systems; and control the second transceiver to scan the one or more second communication systems using the second scan list.Type: ApplicationFiled: June 3, 2020Publication date: December 9, 2021Inventors: Shivakumar Bangalore RAMU, David R. MILLS, Mohd Syazani ABDUL AZIZ, Dajun CHEN
-
Patent number: 11178279Abstract: A device, method and system for scanning communication systems of different types is provided. A mobile device comprises: first and second transceivers to communicate first and second communication systems of different types; a memory storing first and second scan lists for scanning first and second channels on the first and second communication systems; and a controller configured to: communicate, using the first transceiver, an indication of the first and second scan lists to a gateway device configured as a proxy for the mobile device to communicate with the first communication systems; receive, using the first transceiver, from the gateway device, a reply indicating that the gateway device is capable of scanning the first communication systems using the first scan list, but is not capable of scanning the second communication systems; and control the second transceiver to scan the one or more second communication systems using the second scan list.Type: GrantFiled: June 3, 2020Date of Patent: November 16, 2021Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Shivakumar Bangalore Ramu, David R. Mills, Mohd Syazani Abdul Aziz, Dajun Chen
-
Patent number: 11115785Abstract: Methods, and apparatus for managing a communication group. One method includes forming a communication group of one or more portable communications devices based on a first object of interest and identifying a second object of interest based on the first object of interest. The method also includes determining whether an image feed includes the second object of interest and when the image feed includes the second object of interest, adding a portable communications device associated with the image feed to the communication group.Type: GrantFiled: January 14, 2016Date of Patent: September 7, 2021Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Yong Tian, Dajun Chen, Xun Fei, Dong Zhao, Kangkai Zhao
-
Publication number: 20210267013Abstract: Systems and methods for broadband failover in land mobile radio networks. One method includes operating a first communication interface of a converged communication device to execute a first communication between the device and a first network using an LMR modality. The method includes determining a plurality of radio communication characteristic values for each of a plurality of sites of the first network and generating a fallback threshold for a home site of the device based on the plurality of radio communications characteristics. The method includes determining whether a current radio communication characteristic value associated with a home site of the device exceeds the fallback threshold, and, when the current radio communication characteristic value does not exceed the fallback threshold, operating a second communication interface of the converged communication device to execute a second communication between the device and a second network using a non-LMR modality.Type: ApplicationFiled: February 20, 2020Publication date: August 26, 2021Inventors: DaJun Chen, Andor Almasi, David R. Mills
-
Patent number: 10580146Abstract: A method and system for tracking an object of interest in a talkgroup. The method includes receiving a first image stream including the object from a first portable communication device associated with the talkgroup. The method includes detecting the object in the first image stream, determining a first view angle associated with the object's position in relation to the first device, and determining a second view angle associated with the object's position in relation to a second portable communication device. When a difference between the first angle and the second angle is below a threshold, a first modified image stream is generated by highlighting the object in the first image stream. When the difference between the first angle and the second angle is above the threshold, a second modified image stream is generated by highlighting the object and indicating a relative direction to the object from the second device.Type: GrantFiled: December 22, 2016Date of Patent: March 3, 2020Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Yong Tian, Dajun Chen, Xun Fei, Dong Zhao, Kangkai Zhao
-
Publication number: 20190392592Abstract: A method and system for tracking an object of interest in a talkgroup. The method includes receiving a first image stream including the object from a first portable communication device associated with the talkgroup. The method includes detecting the object in the first image stream, determining a first view angle associated with the object's position in relation to the first device, and determining a second view angle associated with the object's position in relation to a second portable communication device. When a difference between the first angle and the second angle is below a threshold, a first modified image stream is generated by highlighting the object in the first image stream. When the difference between the first angle and the second angle is above the threshold, a second modified image stream is generated by highlighting the object and indicating a relative direction to the object from the second device.Type: ApplicationFiled: December 22, 2016Publication date: December 26, 2019Inventors: Yong TIAN, Dajun CHEN, Xun FEI, Dong ZHAO, Kangkai ZHAO
-
Patent number: 10354528Abstract: A method and apparatus for a first communication device for use with a first vehicle in a system for transmitting information about an incident occurring on a road. The first communication device includes a first receiver to receive an incident indicator. In one embodiment, a first electronic processor is electrically coupled to the first receiver and a first transmitter. The first electronic processor is configured to determine whether to relay a modified incident indicator to other vehicles. The first electronic processor is further configured to modify at least a portion of incident information included in the incident indicator to create the modified incident indicator. The first electronic processor is further configured to control the first transmitter to transmit the modified incident indicator to one or more other vehicles.Type: GrantFiled: November 12, 2015Date of Patent: July 16, 2019Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Jun Jiang, Yong Tian, Xun Fei, Yahui Gong, Dajun Chen, Wen Feng
-
Patent number: 10308555Abstract: Embodiments of the present disclosure are drawn to a wave-absorbing material that includes a main composition, an auxiliary composition, and a sintering additive. The main composition includes at least one of Fe2O3, MnO, ZnO, and MgO. The auxiliary composition includes at least one of CeO2 and P2O5. The molar ratio of CeO2 to P2O5 ranges from about 1:1 to about 2:1. A method for preparing the wave-absorbing material is also provided.Type: GrantFiled: March 8, 2016Date of Patent: June 4, 2019Assignee: BYD COMPANY LIMITEDInventors: Houyin Liu, Xianjun Kong, Dajun Chen
-
Publication number: 20180376294Abstract: Methods, and apparatus for managing a communication group. One method includes forming a communication group of one or more portable communications devices based on a first object of interest and identifying a second object of interest based on the first object of interest. The method also includes determining whether an image feed includes the second object of interest and when the image feed includes the second object of interest, adding a portable communications device associated with the image feed to the communication group.Type: ApplicationFiled: January 14, 2016Publication date: December 27, 2018Inventors: Yong TIAN, Dajun CHEN, Xun FEI, Dong ZHAO, Kangkai ZHAO
-
Publication number: 20180308355Abstract: A method and apparatus for a first communication device for use with a first vehicle in a system for transmitting information about an incident occurring on a road. The first communication device includes a first receiver to receive an incident indicator. In one embodiment, a first electronic processor is electrically coupled to the first receiver and a first transmitter. The first electronic processor is configured to determine whether to relay a modified incident indicator to other vehicles. The first electronic processor is further configured to modify at least a portion of incident information included in the incident indicator to create the modified incident indicator. The first electronic processor is further configured to control the first transmitter to transmit the modified incident indicator to one or more other vehicles.Type: ApplicationFiled: November 12, 2015Publication date: October 25, 2018Inventors: Jun JIANG, Yong TIAN, Xun FEI, Yahui GONG, Dajun CHEN, Wen FENG
-
Patent number: 9967718Abstract: Aggregating and segregating multiple digital vehicular repeaters. One exemplary method includes the steps of assigning a first serving digital vehicular repeater from a plurality of digital vehicular repeaters; receiving, via the first serving digital vehicular repeater, a first call request from a first portable subscriber unit; assigning the first call to a first channel; moving the first serving digital vehicular repeater and the first portable subscriber unit to the first channel; and assigning a second serving digital vehicular repeater from the plurality of digital vehicular repeaters.Type: GrantFiled: April 24, 2015Date of Patent: May 8, 2018Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Wen Feng, Dajun Chen, Xun Fei, Yahui Gong, Yong Tian
-
Patent number: 9954583Abstract: A mobile terminal and a NFC antenna are provided. The mobile terminal includes: a terminal body, including a rear surface defined with a rear longitudinal centerline and a rear transverse centerline; near field communication antenna, disposed on the rear surface of the terminal body; wherein at least one of the rear longitudinal centerline and the rear transverse centerline pass through the near field communication antenna, and the near field communication antenna is disposed asymmetrically to the at least one of the rear longitudinal centerline and the rear transverse centerline. The mobile terminal according to the present disclosure shows a lower deviation of the resonance frequency when operating the P2P networking, and also shows high communication sensitivity, a high communication success rate, a strong communication capability, etc.Type: GrantFiled: November 25, 2014Date of Patent: April 24, 2018Assignee: BYD COMPANY LIMITEDInventors: Yajuan Chen, Jiangang Zhou, Dajun Chen
-
Patent number: 9941572Abstract: An NFC antenna assembly is provided. One embodiment of the NFC antenna assembly disclosed herein includes: a metal plate defining a fitting aperture which penetrates through the metal plate in a thickness direction of the metal plate; a mounting sheet disposed in the fitting aperture; an insulating washer disposed in the fitting aperture and surrounding the mounting sheet; and an NFC antenna disposed on the mounting sheet, wherein the mounting sheet comprises a first through slot extended in a radial direction of the mounting sheet, and the metal plate comprises a second through slot extended from the fitting aperture to a periphery of the metal plate.Type: GrantFiled: May 26, 2016Date of Patent: April 10, 2018Assignee: BYD Company LimitedInventors: Qiaoling Liu, Jiangang Zhou, Dajun Chen
-
Patent number: 9832309Abstract: A method and apparatus for detecting a stale number. A stale number detection device obtains a call number, a call number contact creation date, and a call number issue date for the call number. The stale number detection device determines that a stale number state exists when the call number issue date is later than the call number contact creation date. The stale number detection device generates a stale number notification based on the stale number state.Type: GrantFiled: July 5, 2015Date of Patent: November 28, 2017Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Xun Fei, Dajun Chen, Yong Tian, Hongxia Wang
-
Patent number: 9743379Abstract: A method and server for broadcasting a data file to talk groups. The method includes fragmenting the data file into data blocks and broadcasting the data blocks to the talk groups. The method also includes detecting a voice call start event based on a first change is a received voice call status. The method further includes detecting a voice call end event based on a second change in the received voice call status. The method also includes generating a backlog item. The backlog item includes a subset of data blocks of the plurality of data blocks. The subset of data blocks were broadcasted on the broadcast data channel after the voice call start event and prior to the voice call end event. The method further includes broadcasting the subset of data blocks on the broadcast data channel upon detection of the voice call end event.Type: GrantFiled: June 12, 2015Date of Patent: August 22, 2017Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Dajun Chen, Xun Fei, Wen Feng, Yahui Gong, Yong Tian