Patents by Inventor Jianxin Wang

Jianxin Wang 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: 20190253456
    Abstract: A system and method for multifunction device security includes determining when a device administrator's login credentials may have been compromised by violations of a device security policy. Approved device security settings corresponding to a multifunction peripheral are stored in memory and sent to the multifunction peripheral via the network interface. Current device security settings data are received from the multifunction peripheral via the network interface. The current device settings are tested relative to the approved device security settings. Violations determined from the testing trigger sending of a violation notification data to the multifunction peripheral via the network. Notification is received when violations exceed a threshold level and a reset of device administrator login credentials is commenced.
    Type: Application
    Filed: February 9, 2018
    Publication date: August 15, 2019
    Inventor: Jianxin WANG
  • Publication number: 20190241522
    Abstract: Disclosed are a nicotinic acid or isonicotinic acid compound and a use thereof. The compound is the compound shown in Formula I, or a pharmaceutically acceptable salt, ester or solvate thereof. Efficacy tests demonstrate that the nicotinic acid compound can inhibit botulinum toxin endopeptidase activity in vitro, and has a significant protective effect on mice poisoned with botulinum toxin. On this basis, the compound may be used to prepare a drug preventing and/or treating botulinum toxin exposure and/or poisoning.
    Type: Application
    Filed: September 8, 2017
    Publication date: August 8, 2019
    Applicant: Academy of Military Medical Sciences
    Inventors: Hui WANG, Tao LI, Zhenyuan MIAO, Jianxin WANG, Deyan LUO, Jie HUANG, Chunlin ZHUANG, Yuelin WU
  • Patent number: 10356864
    Abstract: An apparatus can include: a bleeder circuit coupled to a DC bus of an LED driver having a silicon-controlled dimmer, where the bleeder circuit is controlled to discharge a current of the DC bus; a controller configured to control the bleeder circuit to discharge the DC bus at a first current after detecting a transition in a voltage of the DC bus; and the controller being configured to control the bleeder circuit to discharge the DC bus at a second current until the DC bus voltage rises to a predetermined load driving voltage, where the second current is less than the first current.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: July 16, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Huiqiang Chen, Jianxin Wang
  • Patent number: 10356863
    Abstract: A method of controlling an LED driver can include: generating a first comparison signal using a first reference voltage, the first comparison signal having a duty cycle in accordance with an alternating current input voltage generated by a transformer of the LED driver, and representing an operation frequency of an input source; generating a conversion voltage signal by an averaging operation of the first comparison signal with a time constant that is greater than a switching period of an electronic transformer; generating a second comparison signal by comparing the conversion voltage signal against a second reference voltage; and determining whether the transformer is the electronic transformer or a power frequency transformer based on the second comparison signal.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: July 16, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Xiaoqiang Xu, Jianxin Wang
  • Patent number: 10344035
    Abstract: Disclosed is a salt of a quinoline derivative, polymorphic forms thereof, preparation methods thereof, a composition, and applications. The SPH1772 ditartrate or crystal form A thereof expresses the following excellent properties: high stability, great bioavailability, excellent pharmacokinetic properties, and better in vivo efficacy than SPH1772 free base.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 9, 2019
    Assignee: Shanghai Phaarmaceuticals Holding Co., Ltd.
    Inventors: Jianxin Yu, Yu Hao, Jing Zhang, Fei Zhao, Leduo Zhang, Zhenying Liu, Gongsheng Li, Yuji Wang, Na Chen, Rui Bai, Yi Fan
  • Publication number: 20190206117
    Abstract: The present disclosure provides an image processing method, an intelligent terminal, and a storage device. The image processing method may include: obtaining an original image, and obtaining mask information of a target object from the original image, wherein the mask information includes classification information for foreground and background of the target object; denoising the original image to obtain a denoised image of the original image; and obtaining a target image from the denoised image according to the mask information of the target object. The present disclosure can improve the quality of the image by denoising the original image, and the obtained target image can be a minimum-sized image including all the information of the target object. Because the size of the image is reduced without losing valid information, the calculation amount of the 3D synthesis can be greatly reduced.
    Type: Application
    Filed: December 25, 2018
    Publication date: July 4, 2019
    Inventors: Youjun XIONG, Shengqi Tan, Cihui Pan, Xianji Wang, Jianxin Pang
  • Publication number: 20190208591
    Abstract: An apparatus can include: a linear drive circuit configured to control a drive current flowing through an LED load; a control circuit configured to acquire a conduction angle signal of a silicon-controlled rectifier dimmer and control the linear drive circuit; and the control circuit being configured to control the drive current to be decreased to reduce a current ripple and to maintain the silicon-controlled rectifier dimmer in a turn-on state when the conduction angle signal is less than a predetermined value.
    Type: Application
    Filed: December 6, 2018
    Publication date: July 4, 2019
    Inventors: Huiqiang Chen, Jianxin Wang
  • Publication number: 20190208597
    Abstract: An apparatus can include: a light-emitting diode (LED) drive circuit having a silicon-controlled rectifier dimmer; and a bus voltage adjustment circuit configured to adjust a direct current bus voltage to delay a turn-on time instant of the silicon-controlled rectifier dimmer when a conduction angle signal is greater than an angle threshold.
    Type: Application
    Filed: December 7, 2018
    Publication date: July 4, 2019
    Inventors: Jianxin Wang, Huiqiang Chen
  • Publication number: 20190197735
    Abstract: The present disclosure provides a method and an apparatus for image processing, and a robot using the same. The method includes: obtaining a depth map and a color map of a target object in a predetermined scene; filtering the depth map based on the color map to obtain a first depth filter map; detecting pixel values of pixels in the first depth filter map to obtain one or more first pixels, and forming a black dot cavity area based on the one or more first pixels; re-assigning a depth value of each of the one or more first pixels in the black dot cavity area according to a preset rule to obtain the depth map after repair; and filtering the depth map after repair to obtain a second depth filter map. The present disclosure is capable of improving the quality of the depth map.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 27, 2019
    Inventors: Youjun Xiong, Shengqi Tan, Cihui Pan, Xianji Wang, Jianxin Pang
  • Publication number: 20190199804
    Abstract: A handshake procedure to establish a first connection between a client and a server is monitored at an intermediate network device. A request message sent to the server from the client is received at the intermediate network device. The request message includes parameters defining a manner of receiving information from the server. The parameters defining the manner of receiving information from the server are modified to produce modified parameters. A redirect message is sent from the intermediate network device to the client to induce or cause the client to establish a second connection with the server based upon the modified parameters, wherein the redirect message contains the modified parameters.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Inventors: Manish Pathak, Venkatesh N. Gautam, Jianxin Wang
  • Publication number: 20190191506
    Abstract: A power converter for an LED driver, can include: an input capacitor circuit coupled between input terminals of the power converter and being configured to receive an output signal of a rectifier circuit; a transistor coupled in series with an LED load; and a control circuit configured to regulate a capacitance value of the input capacitor circuit to regulate an input current, and to control the transistor to regulate a current flowing through the LED load.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 20, 2019
    Inventors: Qiukai Huang, Jianxin Wang, Qingliang Zheng
  • Patent number: 10327297
    Abstract: A control circuit for an LED driving circuit having a rectifier and a power transistor for driving an LED load, can include: a control signal regulation circuit configured to control a driving voltage of the power transistor to vary with a rectifier output voltage to control the variation of a current flowing through the power transistor to be consistent with that of the rectifier output voltage to decrease a power loss of the power transistor; and the control signal regulation circuit being configured to control the driving voltage of the power transistor to vary with the rectifier output voltage to control the variation of the current flowing through the power transistor to be opposite to that of the rectifier output voltage to improve a power factor of the LED driving circuit.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: June 18, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jianxin Wang, Huiqiang Chen
  • Publication number: 20190182918
    Abstract: A power converter for an LED drive circuit, can include: a capacitor and an LED load coupled in parallel to receive an output signal of a rectifier circuit; a power switch coupled in series with the LED load, and being configured to control a current path from the rectifier circuit to the LED load; and a control circuit configured to control the power switch to be turned off in accordance with an error between an output current flowing through the LED load and a desired current value to decrease power consumption of the power switch, where the operation of the power switch is controlled to transition between on and off states in each sinusoidal half-wave period.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 13, 2019
    Inventors: Qiukai Huang, Jianxin Wang, Qingliang Zheng
  • Patent number: 10306722
    Abstract: An LED driving circuit configured to drive an LED lamp having first and second loads, can include: a power converter; a dimmer configured to control the power converter to output a driving current to the LED lamp; and a current distribution circuit configured to adjust a proportion of current from the driving current that flows through each of the first and second loads of the LED lamp, in order to adjust the color temperature or the brightness of the LED lamp.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: May 28, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Hongbin Lai, Jianxin Wang
  • Patent number: 10285229
    Abstract: An apparatus can include: a bleeder circuit coupled to a DC bus of an LED driving circuit having an SCR dimmer; the bleeder circuit being configured to stabilize a voltage of the DC bus at a predetermined value by drawing a bleed current through a bleed path in a first mode, and to cut off the bleed path in a second mode; and a controller configured to control the bleeder circuit to be in the first mode before the SCR dimmer is turned on, and to switch to the second mode after the SCR dimmer is turned on, where the predetermined value is greater than zero.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: May 7, 2019
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jianxin Wang, Huiqiang Chen
  • Publication number: 20190116790
    Abstract: A jinggangmycin and ipconazole fungicidal composition, a weight ratio of jinggangmycin to ipconazole being (1-68):(40-1). The fungicidal composition of the present invention has a remarkable synergistic effect in preventing and controlling fusarium head blight of wheat and barley, powdery mildew of wheat and barley, rust of wheat and barley, sheath blight of wheat and barley, leaf blight of wheat and barley, rice blast, rice false smut and rice sheath blight, particularly the synergistic effect in preventing and controlling fusarium head blight of wheat and barley is more remarkable, and the contamination level of DON toxin in grains can be significantly decreased.
    Type: Application
    Filed: June 6, 2016
    Publication date: April 25, 2019
    Inventors: Mingguo ZHOU, Yabing DUAN, Jianxin WANG, Yiping HOU, Ying YANG
  • Publication number: 20190116637
    Abstract: A method of controlling an LED driver can include: generating a sinusoidal half-wave signal having the same frequency and phase as an AC input voltage by utilizing a phase-locked loop; generating a sampling signal of a peak value of an inductor current in a power stage circuit of the LED driver; generating a loop compensation signal in accordance with the sinusoidal half wave signal and a signal representing an output current of the power stage circuit; and generating a switching control signal for controlling the power stage circuit in accordance with the sampling signal and the loop compensation signal.
    Type: Application
    Filed: October 4, 2018
    Publication date: April 18, 2019
    Inventors: Longqi Wang, Jianxin Wang
  • Patent number: 10264079
    Abstract: A handshake procedure to establish a first connection between a client and a server is monitored at an intermediate network device. A request message sent to the server from the client is received at the intermediate network device. The request message includes parameters defining a manner of receiving information from the server. The parameters defining the manner of receiving information from the server are modified to produce modified parameters. A redirect message is sent from the intermediate network device to the client to induce or cause the client to establish a second connection with the server based upon the modified parameters, wherein the redirect message contains the modified parameters.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: April 16, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Manish Pathak, Venkatesh N. Gautam, Jianxin Wang
  • Publication number: 20190110346
    Abstract: A method of controlling an LED driver can include: generating a first comparison signal using a first reference voltage, the first comparison signal having a duty cycle in accordance with an alternating current input voltage generated by a transformer of the LED driver, and representing an operation frequency of an input source; generating a conversion voltage signal by an averaging operation of the first comparison signal with a time constant that is greater than a switching period of an electronic transformer; generating a second comparison signal by comparing the conversion voltage signal against a second reference voltage; and determining whether the transformer is the electronic transformer or a power frequency transformer based on the second comparison signal.
    Type: Application
    Filed: September 19, 2018
    Publication date: April 11, 2019
    Inventors: Xiaoqiang Xu, Jianxin Wang
  • Publication number: 20190104589
    Abstract: A dimming signal conversion method can include: converting a dimming voltage to a PWM signal; adjusting a corresponding relationship between the dimming voltage and a duty cycle of the PWM signal according to brightness requirements of a LED light source; and generating a drive current of an LED driver based on the corresponding relationship.
    Type: Application
    Filed: September 4, 2018
    Publication date: April 4, 2019
    Inventors: Longqi Wang, Jianxin Wang