Patents by Inventor Jialiang Zhang

Jialiang 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: 10203950
    Abstract: A method of upgrading firmware of an adapter includes transmitting a set of n data blocks of first upgrade file to the adapter, receiving a first response information of the adapter based on the set of n data blocks, and determining that the updating procedure of the adapter fails when the first response information indicates that the adapter fails to receive all of the n data blocks. In the method, a mobile terminal transmits the upgrade file to the adapter and the adapter sends determination information to the mobile terminal after the adapter receives the upgrade file having a predetermined size. In a time interval, if the mobile terminal fails to receive the determination information or the adapter does not receive the upgrade file, the upgrading firmware of the adapter fails.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: February 12, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen Tian, Jialiang Zhang, Jun Zhang, Fuchun Liao
  • Publication number: 20190036361
    Abstract: A power adapter and a method for handling an impedance anomaly in a charging loop are provided. The power adapter includes a power conversion unit and a charging interface. The power conversion unit forms a charging loop with a terminal through the charging interface. The power adapter includes a communications unit, a detection unit, and an anomaly handling unit. The communications unit is configured to receive voltage indicative information from the terminal, the voltage indicative information indicating an input voltage of the terminal. The detection unit is configured to detect an output voltage of the power adapter. The anomaly handling unit is configured to determine whether an impedance of the charging loop is abnormal according to a difference between the input voltage and the output voltage, and to control the charging loop to enter into a protection state if the impedance of the charging loop is abnormal.
    Type: Application
    Filed: October 3, 2018
    Publication date: January 31, 2019
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Jialiang ZHANG
  • Publication number: 20190036352
    Abstract: The present disclosure provides a charging method, a charging adapter and a charging system. The charging adapter includes a second controller and an adjusting circuit including a current detection circuit. The second controller is configured to receive a voltage value of a cell, search a threshold range table to obtain a current adjusting instruction. The current detection circuit is configured to detect a current value of a power signal outputted by the adjusting circuit. The second controller is further configured to calculate a difference between the current value detected and a current value specified by the current adjusting instruction, and send a calibration instruction to the adjusting circuit when an absolute value of the difference calculated is greater than a difference threshold. The adjusting circuit is configured to calibrate the power signal according to a current difference specified by the calibration instruction, and output a calibrated power signal.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Wenqiang Cheng, Fuchun Liao, Liangcai Peng, Kewei Wu
  • Publication number: 20190036351
    Abstract: A charging method includes the follows. A battery of a terminal device is determined to be charged in a charging mode based on that current status of the terminal device satisfies a condition that the battery of the terminal device is operable to be charged in the charging mode. A communication with the terminal device is conducted to determine a charging voltage or a charging current of the charging mode. An output voltage or output current output to the terminal device is adjusted to enter a constant current phase. A communication with the terminal device is conducted during the constant current phase to receive information of a current voltage of the battery. The output current output to the terminal device is adjusted according to the current voltage of the battery in the constant current phase. A related terminal device and power supply device are also provided.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: Chen Tian, Jialiang Zhang
  • Patent number: 10193368
    Abstract: A charging control apparatus and method for an electronic device are provided. During a process of charging, the power adapter first charges the battery with a constant-voltage direct current output, and then after the power adapter receives a quick-charging instruction, the power adapter adjusts an output voltage according to the voltage of the battery fed back by the charging control module, and if the output voltage meets a quick-charging voltage condition pre-set by the charging control module, the power adapter adjusts an output current and the output voltage respectively according to a preset quick-charging current value and a preset quick-charging voltage value for quick-charging the battery, and meanwhile the charging control module introduces direct current from the power adapter for charging the battery; during a process of quick-charging, the power adapter adjusts the output current in real time according to the output voltage thereof and the voltage of the battery.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: January 29, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Jun Zhang, Dashuai Huang, Yuanxiang Hu
  • Patent number: 10186895
    Abstract: The present disclosure relates to the technical field of charging. A terminal and a battery charging control device and method are provided. The battery charging control device including a battery connector, a main control module and a quick charging switch module is adopted. During the regular charging or the quick charging, the main control module performs a data communication with the external power adapter via the communication interface, and obtains a charging voltage and a charging current for the battery; if the charging voltage is greater than a voltage threshold and/or the charging current is greater than a current threshold, the main control module sends a charging switch-off instruction, such that the controller controls the communication interface to switch off; if the charging voltage is less than or equal to the voltage threshold and the charging current is less than or equal to the current threshold, the main control module continues to obtain the charging voltage and the charging current.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: January 22, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Jun Zhang, Fuchun Liao, Yuanxiang Hu
  • Publication number: 20190020205
    Abstract: A quick-charging control method and system are suitable for mobile terminals. The method includes: a first controller obtaining a voltage value of a cell, and sending the voltage value to a second controller; the second controller searching a threshold segment table to find a current regulation instruction matched with a threshold segment containing the voltage value of the cell, and sending the current regulation instruction to a regulation circuit; the regulation circuit performing a current regulation according the current regulation instruction, and outputting a power signal; the second controller sending a second switch-off instruction to the first controller and a second switch circuit respectively if second abnormal charging information is detected; and the second switch circuit, controlling the charging adapter to stop sending the power signal after the current regulation if the second switch circuit receives the second switch-off instruction.
    Type: Application
    Filed: September 20, 2018
    Publication date: January 17, 2019
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Jun Zhang, Liangcai Peng, Fuchun Liao
  • Patent number: 10181745
    Abstract: The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a compositing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a voltage sampling value and/or a current sampling value obtained by primary sampling of the sampling unit, such that a second alternating current outputted by the compositing unit meets a charging requirement. The second alternating current is applied to the battery.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: January 15, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Chen Tian, Jun Zhang, Shebiao Chen, Shiming Wan, Jiada Li
  • Patent number: 10177587
    Abstract: The present disclosure provides a charging method and a charging system. The charging system includes a charging adapter and a mobile terminal, the charging adapter includes a second controller and an adjusting circuit, and the mobile terminal includes a cell detection circuit and a cell. The cell detection circuit acquires a voltage value of the cell, and sends the voltage value of the cell to the second controller, the second controller searches a threshold range table for a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and sends the current adjusting instruction to the adjusting circuit, and the adjusting circuit performs a current adjustment according to the current adjusting instruction and outputs a power signal after the current adjustment, in which the threshold range table records threshold ranges and current adjusting instructions having a one-to-one mapping relation with threshold ranges.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 8, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Liangcai Peng, Wenqiang Cheng, Fuchun Liao
  • Publication number: 20180364291
    Abstract: The present disclosure provides an electronic device. The electronic device includes: a USB interface, including a first power wire and a signal wire, in which the USB interface is configured to receive a power signal via the signal wire, when the USB interface is coupled to a second electronic device, the first power wire is configured to output the power signal received to the second electronic device, and the signal wire is configured to acquire a voltage of a power wire of the second electronic device; a controller, configured to acquire the voltage of the first power wire and a voltage of the signal wire in the USB interface through a coupling between the USB interface and the second electronic device, to determine whether the interface coupling is abnormal according to the voltage difference.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 20, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LT D.
    Inventors: Jialiang Zhang, Kewei Wu, Jie Wu, Xingwei Yuan, Feiwu Shuai
  • Publication number: 20180367047
    Abstract: The present disclosure discloses a charging device and a terminal The device includes: a charging receiving terminal configured to receive a first alternating current; a first rectifier configured to rectify the first alternating current and output a first voltage with a first pulsating waveform, a switch unit configured to modulate the first voltage according to a control signal to obtain a modulated first voltage, a transformer configured to output a plurality of voltages with pulsating waveforms according to the modulated first voltage, and a synthesizing unit configured to synthesize the plurality of voltages to output a second alternating current; and a central control module configured to output the control signal to the switch unit so as to adjust voltage and/or current of the second alternating current in response to a charging requirement of the battery.
    Type: Application
    Filed: August 27, 2018
    Publication date: December 20, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang ZHANG, Shebiao CHEN, Jun ZHANG, Chen TIAN, Shiming WAN, Jiada LI
  • Patent number: 10156901
    Abstract: A virtual touchscreen for mobile devices provides a touchscreen area displaced to a side of the display to eliminate problems of a finger blocking the display during normal touchscreen operation. The virtual touchscreen may be monitored by a sensor system looking edgewise from a housing of the mobile device employing as few as two displaced photodetectors and a correspondingly oriented light source constrained to sensitivity within a narrow fan-shaped light-sensing plane. Extraction of the spatial location of a finger touch within this touchscreen area may be performed by a model of reflected light signals of a finger in different locations calibrated to environmental parameters of finger reflectivity and background reflectivity by a simple calibration process.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: December 18, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Xinyu Zhang, Chi Zhang, Joshua Tabor, Jialiang Zhang
  • Publication number: 20180358835
    Abstract: An adapter and a charging control method are provided, the adapter includes: a power conversion unit, a voltage feedback unit, a current feedback unit, and a power adjusting unit. An input end of the power adjusting unit is coupled to an output end of the voltage feedback unit and an output end of the current feedback unit respectively, and an output end of the power adjusting unit is coupled to the power conversion unit. The power adjusting unit is configured to receive a voltage feedback signal and a current feedback signal, and to stabilize the output voltage and the output current of the adapter when the voltage feedback signal indicates that the output voltage of the adapter reaches a predetermined target voltage or when the current feedback signal indicates that the output current of the adapter reaches a predetermined target current.
    Type: Application
    Filed: January 7, 2017
    Publication date: December 13, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen TIAN, Jialiang ZHANG
  • Publication number: 20180358818
    Abstract: A chargeable device and a charging method are proposed. The chargeable device includes a charging interface and a first charging circuit coupled to the charging interface. The first charging circuit receives voltage and current outputted by an adapter through the charging interface and to apply the voltage and current outputted by the adapter between two terminals of multiple cells coupled in series built in the chargeable device to charge the multiple cells directly.
    Type: Application
    Filed: February 15, 2017
    Publication date: December 13, 2018
    Inventor: JIALIANG ZHANG
  • Publication number: 20180358836
    Abstract: An adapter (10) and a charging control method, the adapter (10) comprising: a power conversion unit (11), used for converting an inputted alternating current so as to obtain an output voltage and an output current of the adapter (10), the output current of the adapter (10) being an alternating current or a pulsed direct current; a voltage holding unit (12), an input end of the voltage holding unit (12) being connected to the power conversion unit (11), the voltage holding unit (12) being used for obtaining an input voltage having a pulsed waveform from the power conversion unit (11) and converting the input voltage having the pulsed waveform into a target voltage, an output end of the voltage holding unit (12) being connected to a device in the adapter (10), the target voltage being used to power the device in the adapter (10), a peak value of the target voltage being between the lowest operating voltage and the highest operating voltage of the device.
    Type: Application
    Filed: January 7, 2017
    Publication date: December 13, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen TIAN, Jialiang ZHANG
  • Patent number: 10153652
    Abstract: The present disclosure provides a charging system that includes a charging adapter and a mobile terminal. The charging adapter includes: a second USB interface; and an adjusting circuit for rectifying and filtering the mains supply to obtain an original power signal, for performing a voltage adjustment on the original power signal, and for outputting a power signal after the voltage adjustment. The mobile terminal includes a first USB interface. P first power wires in the first USB interface and P second power wires in the second USB interface are correspondingly coupled, and Q first ground wires in the first USB interface and Q second ground wires in the second USB interface are correspondingly coupled. Because each first power wire and a corresponding second power wire are coupled, at least two charging circuits can be provided, and the charging system supports charging with a large current more than 3 A.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: December 11, 2018
    Assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
    Inventors: Jialiang Zhang, Fengshuo Liu, Biao Chen, Kewei Wu
  • Publication number: 20180351396
    Abstract: A charging system and charging method for a terminal (2), and a power adapter (1) and a switch power source. The switch power source comprises a first rectification unit (101), a switch unit (102), a transformer (103), a second rectification unit (104), a sampling unit (106) and a control unit (107), wherein the control unit (107) outputs a control signal to the switch unit (102) and adjusts a voltage of a first pulse waveform according to a voltage sampling value and/or a current sampling value sampled by the sampling unit (106) to obtain a primary sampling voltage, and adjusts a duty ratio of the control signal according to the primary sampling voltage, the voltage sampling value and/or the current sampling value, so that a voltage of a third pulse waveform satisfies a charging requirement. The switch power source can make an output voltage and current waveform change along with an input voltage and current waveform, so that a good power factor can be obtained.
    Type: Application
    Filed: January 7, 2017
    Publication date: December 6, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Shebiao CHEN, Jialiang ZHANG
  • Patent number: 10148113
    Abstract: The present disclosure provides a quick charging method and a quick charging system. A second controller sends a quick-charging request to a first controller. The first controller feeds back a quick-charging permission command. The second controller sends a notification request for obtaining a voltage value of a cell. The first controller obtains the voltage value by a cell connector, and sends the voltage value to the second controller. The second controller finds a current regulation instruction matching a threshold section that the voltage value falls within from a threshold section table, and sends a current regulation instruction to a regulation circuit. The regulation circuit adjusts a current, and outputs a power supply signal of which the current is regulated.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: December 4, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Kewei Wu, Jun Zhang, Liangcai Peng, Fuchun Liao
  • Publication number: 20180342890
    Abstract: An adapter, a charging control method and a charging system are provided. The adapter includes: a power converter, configured to convert input alternating current to obtain an output voltage and an output current of the adapter, the output current of the adapter being a current with a first pulsating waveform; a sampling and holding unit, coupled to the power converter, and configured to sample the current with the first pulsating waveform in a sampling state, and to hold a peak value of the current in a holding state; a current sampling controller, coupled to the sampling and holding unit, and configured to determine whether the sampling and holding unit is in the holding state, and to sample the peak value of the current with the first pulsating waveform held by the sampling and holding unit when the sampling and holding unit is in the holding unit.
    Type: Application
    Filed: January 7, 2017
    Publication date: November 29, 2018
    Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen TIAN, Jialiang ZHANG
  • Patent number: 10141766
    Abstract: The present disclosure discloses a charging system and method, and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a synthesizing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or a voltage sampling value, such that a second alternating current outputted by the synthesizing unit meets a charging requirement. The terminal includes a battery.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: November 27, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Chen Tian, Jun Zhang, Shebiao Chen, Shiming Wan, Jiada Li