Patents by Inventor Zhiliang Chen

Zhiliang 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).

  • Patent number: 7706162
    Abstract: System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includes a second voltage supply that is configured to provide a second voltage. The second voltage being independent from the first voltage. The system additionally includes a controller component that is electrically coupled to the first voltage supply. For example, the controller component being configured to receive at least a first input signal and to provide at least a first output signal. Additionally, the system includes a gate driver component that is electrically coupled to the second voltage supply. The gate driver component is configured to receive at least the first output signal and generated a second output signal in response to at least the second voltage and the first output signal.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: April 27, 2010
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhiliang Chen, Shifeng Zhao, Lieyi Fang, Zhenhua Li
  • Patent number: 7684220
    Abstract: System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: March 23, 2010
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Shifeng Zhao, Bo Li, Zhiliang Chen
  • Patent number: 7684462
    Abstract: System and method for providing frequency control to a power converter. The system includes a pseudorandom signal generator configured to generate a digital signal. The digital signal is associated with at least an N-bit datum, and N is a positive integer. Additionally, the system includes a digital-to-analog converter configured to receive the digital signal and generate a first control signal, an output signal generator configured to receive the first control signal and generate at least a first output signal associated with a frequency, and a pulse-width-modulation generator configured to receive at least the first output signal. The N-bit datum represents a pseudorandom number.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: March 23, 2010
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jun Ye, Zhen Zhu, Shifeng Zhao, Lieyi Fang, Zhiliang Chen
  • Patent number: 7679938
    Abstract: System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the first voltage and the second voltage, to determine a signal based on at least information associated with the first voltage and the second voltage, and to send the signal to a switch for a power converter. The switch is regulated based on at least information associated with the signal. The signal processing component is further configured to determine the signal to be associated a first mode, if the first voltage is higher than a first threshold.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: March 16, 2010
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jun Ye, Zhen Zhu, Shifeng Zhao, Zhiliang Chen, Lieyi Fang
  • Patent number: 7589574
    Abstract: A system and method for power-on reset and under-voltage lockout schemes. The system includes a first transistor, which includes a first gate, a first terminal, and a second terminal, the second terminal being biased to a predetermined voltage. The system includes a second transistor, which include a second gate, a third terminal, and a fourth terminal, the third terminal being configured to receive an input voltage. The system includes a first resistor that is associated with a first resistance. The first resistor includes a fifth terminal and a sixth terminal, the fifth terminal being configured to receive the input voltage. The system includes a second resistor that is associated with a second resistance. The second resistor includes a seventh terminal and an eighth terminal, the seventh terminal being coupled to the sixth terminal. The system includes a first Zener diode that is associated with a first Zener voltage.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: September 15, 2009
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhen Zhu, Jun Ye, Zhiliang Chen, Lieyi Fang
  • Publication number: 20090213507
    Abstract: System and method for protecting an integrated circuit. The system includes a first transistor coupled to a first voltage and a second voltage, a second transistor coupled to the gate of the first transistor and the first voltage, a third transistor coupled to the gate of the second transistor and the first voltage, and a capacitor coupled to the gate of the second transistor and the second voltage. The first voltage is provided to the integrated circuit, the gate of the third transistor is configured to receive a first control signal, the gate of the second transistor is configured to receive a second control signal, and the second control signal is capable of turning off the second transistor a time period after the third transistor is turned off.
    Type: Application
    Filed: April 15, 2008
    Publication date: August 27, 2009
    Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Zhiliang Chen, Shifeng Zhao, Lieyi Fang, Zhen Zhu, Jun Ye
  • Publication number: 20090196081
    Abstract: System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includes a second voltage supply that is configured to provide a second voltage. The second voltage being independent from the first voltage. The system additionally includes a controller component that is electrically coupled to the first voltage supply. For example, the controller component being configured to receive at least a first input signal and to provide at least a first output signal. Additionally, the system includes a gate driver component that is electrically coupled to the second voltage supply. The gate driver component is configured to receive at least the first output signal and generated a second output signal in response to at least the second voltage and the first output signal.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 6, 2009
    Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD
    Inventors: Zhiliang Chen, Shifeng Zhao, Lieyi Fang, Zhenhua Li
  • Publication number: 20090096387
    Abstract: Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps. According to an embodiment, the present invention provides a system for driving a plurality of cold-cathode fluorescent lamps. The system includes a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage. The system also includes a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage. The system further includes a plurality of current balancing devices. Each of the plurality of current balancing devices is configured to receive two currents and balance the two currents. The plurality of current balancing devices includes at least a first current balancing device, a second current balancing device, and a third current balancing device. In addition, the system includes a plurality of lamp pairs.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 16, 2009
    Applicant: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Changshan Zhang, Zhiliang Chen, Shifeng Zhao
  • Patent number: 7511978
    Abstract: System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includes a second voltage supply that is configured to provide a second voltage. The second voltage being independent from the first voltage. The system additionally includes a controller component that is electrically coupled to the first voltage supply. For example, the controller component being configured to receive at least a first input signal and to provide at least a first output signal. Additionally, the system includes a gate driver component that is electrically coupled to the second voltage supply. The gate driver component is configured to receive at least the first output signal and generated a second output signal in response to at least the second voltage and the first output signal.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: March 31, 2009
    Assignee: On-Right Electronics (Shanghai) Co., Ltd.
    Inventors: Zhiliang Chen, Shifeng Zhao, Lieyi Fang, Zhenhua Li
  • Publication number: 20090067204
    Abstract: System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the first voltage and the second voltage, to determine a signal based on at least information associated with the first voltage and the second voltage, and to send the signal to a switch for a power converter. The switch is regulated based on at least information associated with the signal. The signal processing component is further configured to determine the signal to be associated a first mode, if the first voltage is higher than a first threshold.
    Type: Application
    Filed: November 18, 2008
    Publication date: March 12, 2009
    Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI ) CO., LTD.
    Inventors: Jun Ye, Zhen Zhu, Shifeng Zhao, Zhiliang Chen, Lieyi Fang
  • Patent number: 7492619
    Abstract: System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the first voltage and the second voltage, to determine a signal based on at least information associated with the first voltage and the second voltage, and to send the signal to a switch for a power converter. The switch is regulated based on at least information associated with the signal. The signal processing component is further configured to determine the signal to be associated a first mode, if the first voltage is higher than a first threshold.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: February 17, 2009
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jun Ye, Zhen Zhu, Shifeng Zhao, Zhiliang Chen, Lieyi Fang
  • Publication number: 20080297965
    Abstract: System and method for protecting a power converter. The system includes a first comparator configured to receive a threshold signal and a first signal and to generate a comparison signal. The first signal is a sum of a second signal and a third signal, and the third signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control the input current for the power converter. An amplitude for the first signal becomes larger if an amplitude for the input voltage becomes larger. The second signal is generated by receiving an input voltage for the power converter, converting the received input voltage to a fourth signal, and converting the fourth signal to the second signal.
    Type: Application
    Filed: May 21, 2008
    Publication date: December 4, 2008
    Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Lieyi Fang, Shifeng Zhao, Bo Li, Zhiliang Chen
  • Publication number: 20080238375
    Abstract: Switch mode power converter system and method thereof. The system includes one or more isolation boxes including at least a first isolation box, an input primary winding for receiving an input signal for the switch mode power converter system, and an output secondary winding for generating an output signal for the switch mode power converter system. The switch mode power converter system is configured to convert the input signal to the output signal. One of the input primary winding and the output secondary winding is substantially enclosed in the first isolation box, and the other of the input primary winding and the output secondary winding is not enclosed in the first isolation box. The first isolation box is conductively connected to a constant-voltage source.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhiliang Chen, Xiuhong Zhang, Jun Ye, Shifeng Zhao, Lieyi Fang
  • Publication number: 20080212248
    Abstract: System and method for protecting a power converter. The system includes a compensation system configured to receive an input signal and generate a control signal, a cycle threshold generator configured to receive the control signal and generate a cycle threshold, and a comparator configured to receive the cycle threshold and a feedback signal and generate a comparison signal. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control an input current for a power converter. The input current is associated with an output power for the power converter. The cycle threshold corresponds to a threshold power level for the output power. The threshold power level is constant, decreases, or increases with respect to the input signal.
    Type: Application
    Filed: February 14, 2008
    Publication date: September 4, 2008
    Applicant: On-Bright Electronics (Shanghai) Co.
    Inventors: Zhen Zhu, Jun Ye, Shifeng Zhao, Lieyi Fang, Zhiliang Chen
  • Publication number: 20080197895
    Abstract: A system and method for power-on reset and under-voltage lockout schemes. The system includes a first transistor, which includes a first gate, a first terminal, and a second terminal, the second terminal being biased to a predetermined voltage. The system includes a second transistor, which include a second gate, a third terminal, and a fourth terminal, the third terminal being configured to receive an input voltage. The system includes a first resistor that is associated with a first resistance. The first resistor includes a fifth terminal and a sixth terminal, the fifth terminal being configured to receive the input voltage. The system includes a second resistor that is associated with a second resistance. The second resistor includes a seventh terminal and an eighth terminal, the seventh terminal being coupled to the sixth terminal. The system includes a first Zener diode that is associated with a first Zener voltage.
    Type: Application
    Filed: October 10, 2007
    Publication date: August 21, 2008
    Applicant: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhen Zhu, Jun Ye, Zhiliang Chen, Lieyi Fang
  • Patent number: 7394634
    Abstract: System and method for protecting a power converter. The system includes a first comparator configured to receive a threshold signal and a first signal and to generate a comparison signal. The first signal is a sum of a second signal and a third signal, and the third signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control the input current for the power converter. An amplitude for the first signal becomes larger if an amplitude for the input voltage becomes larger. The second signal is generated by receiving an input voltage for the power converter, converting the received input voltage to a fourth signal, and converting the fourth signal to the second signal.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: July 1, 2008
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Shifeng Zhao, Bo Li, Zhiliang Chen
  • Patent number: 7382592
    Abstract: System and method for protecting an integrated circuit. The system includes a first transistor coupled to a first voltage and a second voltage, a second transistor coupled to the gate of the first transistor and the first voltage, a third transistor coupled to the gate of the second transistor and the first voltage, and a capacitor coupled to the gate of the second transistor and the second voltage. The first voltage is provided to the integrated circuit, the gate of the third transistor is configured to receive a first control signal, the gate of the second transistor is configured to receive a second control signal, and the second control signal is capable of turning off the second transistor a time period after the third transistor is turned off.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: June 3, 2008
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhiliang Chen, Shifeng Zhao, Lieyi Fang, Zhen Zhu, Jun Ye
  • Patent number: 7345895
    Abstract: System and method for protecting a power converter. The system includes a compensation system configured to receive an input signal and generate a control signal, a cycle threshold generator configured to receive the control signal and generate a cycle threshold, and a comparator configured to receive the cycle threshold and a feedback signal and generate a comparison signal. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and control an input current for a power converter. The input current is associated with an output power for the power converter. The cycle threshold corresponds to a threshold power level for the output power. The threshold power level is constant, decreases, or increases with respect to the input signal.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: March 18, 2008
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Zhen Zhu, Jun Ye, Shifeng Zhao, Lieyi Fang, Zhiliang Chen
  • Publication number: 20080043504
    Abstract: System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the first voltage and the second voltage, to determine a signal based on at least information associated with the first voltage and the second voltage, and to send the signal to a switch for a power converter. The switch is regulated based on at least information associated with the signal. The signal processing component is further configured to determine the signal to be associated a first mode, if the first voltage is higher than a first threshold.
    Type: Application
    Filed: August 31, 2006
    Publication date: February 21, 2008
    Applicant: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Jun Ye, Zhen Zhu, Shifeng Zhao, Zhiliang Chen, Lieyi Fang
  • Publication number: 20070279820
    Abstract: System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a pulse-width-modulation generator configured to receive the comparison signal and generate a modulation signal in response to the comparison signal, and a switch configured to receive the modulation signal and adjust the input current for the power converter. The threshold signal is associated with a threshold magnitude as a function of time. The threshold magnitude increases with time at a first slope during a first period, and the threshold magnitude increases with time at a second slope during a second period. The first slope and the second slope are different.
    Type: Application
    Filed: May 24, 2007
    Publication date: December 6, 2007
    Applicant: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Shifeng Zhao, Bo Li, Zhiliang Chen