Patents by Inventor Jiqing Yang
Jiqing Yang 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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Patent number: 11678417Abstract: System and method for voltage conversion to drive one or more light emitting diodes with at least a TRIAC dimmer. For example, the system includes: a phase detector configured to receive a first rectified voltage generated based at least in part on an AC input voltage processed by at least the TRIAC dimmer, the phase detector being further configured to generate a digital signal representing phase information associated with the first rectified voltage; a voltage generator configured to receive the digital signal and generate a DC voltage based at least in part on the digital signal; and a driver configured to receive the DC voltage and affect, based at least in part on the DC voltage, a current flowing through the one or more light emitting diodes; wherein the current changes with the phase information according to a predetermined function.Type: GrantFiled: November 16, 2021Date of Patent: June 13, 2023Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Jiqing Yang, Zhuoyan Li, Liqiang Zhu, Jun Zhou
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Patent number: 11564297Abstract: System and method for current control. As an example, the system for current control includes: a transistor including a drain terminal, a gate terminal, and a source terminal, the drain terminal being coupled to one or more light emitting diodes; a resistor coupled to the source terminal of the transistor and configured to generate a resistor voltage related to a current flowing through the one or more emitting diodes; a voltage detector configured to receiver a first input voltage related to a second input voltage received by the one or more light emitting diodes; and a voltage controller coupled to the voltage detector, the resistor, and the gate terminal of the transistor; wherein the voltage detector is further configured to: detect the first input voltage; and generate a control signal based at least in part on the first input voltage.Type: GrantFiled: March 3, 2021Date of Patent: January 24, 2023Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Zhuoyan Li, Jiqing Yang
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Publication number: 20220225483Abstract: System and method for voltage conversion to drive one or more light emitting diodes with at least a TRIAC dimmer. For example, the system includes: a phase detector configured to receive a first rectified voltage generated based at least in part on an AC input voltage processed by at least the TRIAC dimmer, the phase detector being further configured to generate a digital signal representing phase information associated with the first rectified voltage; a voltage generator configured to receive the digital signal and generate a DC voltage based at least in part on the digital signal; and a driver configured to receive the DC voltage and affect, based at least in part on the DC voltage, a current flowing through the one or more light emitting diodes; wherein the current changes with the phase information according to a predetermined function.Type: ApplicationFiled: November 16, 2021Publication date: July 14, 2022Inventors: JIQING YANG, ZHUOYAN LI, LIQIANG ZHU, JUN ZHOU
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Patent number: 11224105Abstract: System and method for voltage conversion to drive one or more light emitting diodes with at least a TRIAC dimmer. For example, the system includes: a phase detector configured to receive a first rectified voltage generated based at least in part on an AC input voltage processed by at least the TRIAC dimmer, the phase detector being further configured to generate a digital signal representing phase information associated with the first rectified voltage; a voltage generator configured to receive the digital signal and generate a DC voltage based at least in part on the digital signal; and a driver configured to receive the DC voltage and affect, based at least in part on the DC voltage, a current flowing through the one or more light emitting diodes; wherein the current changes with the phase information according to a predetermined function.Type: GrantFiled: February 14, 2020Date of Patent: January 11, 2022Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Jiqing Yang, Zhuoyan Li, Liqiang Zhu, Jun Zhou
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Patent number: 11181241Abstract: A self-ballasted UV light tube device and light includes a rod body, two light caps, a ballast and the first light tube; the rod body has a length direction from one end to the other end, the rod body is provided with a concave surface which is provided along the length direction; two the light caps connect to two ends of the rod body and work with the concave surface to form the accommodating groove, each of the light caps is provided with a mounting hole corresponding to the accommodating groove and each of the light caps is provided with a contact pin on the side apart from the rod body; the ballast is provided on the rod body and/or the light cap, the ballast connects electrically to the contact pin of any of the light caps, and the first light tube is a UV light tube.Type: GrantFiled: November 25, 2020Date of Patent: November 23, 2021Assignee: SHENZHEN GUANKE TECHNOLOGIES CO., LTDInventors: Qing Lan, Shoubao Chen, Ligen Liu, Jiqing Yang
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Patent number: 11108328Abstract: Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a switch, a first resistor and a second resistor. The first operational amplifier includes a first input terminal, a second input terminal and a first output terminal, the first input terminal being configured to receive a reference signal. The first transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being configured to receive a first amplified signal from the first output terminal, the third transistor terminal being coupled to the second input terminal.Type: GrantFiled: November 29, 2018Date of Patent: August 31, 2021Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Jiqing Yang, Yaozhang Chen, Zhuoyan Li, Qiang Luo, Lieyi Fang
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Publication number: 20210185782Abstract: System and method for current control. As an example, the system for current control includes: a transistor including a drain terminal, a gate terminal, and a source terminal, the drain terminal being coupled to one or more light emitting diodes; a resistor coupled to the source terminal of the transistor and configured to generate a resistor voltage related to a current flowing through the one or more emitting diodes; a voltage detector configured to receiver a first input voltage related to a second input voltage received by the one or more light emitting diodes; and a voltage controller coupled to the voltage detector, the resistor, and the gate terminal of the transistor; wherein the voltage detector is further configured to: detect the first input voltage; and generate a control signal based at least in part on the first input voltage.Type: ApplicationFiled: March 3, 2021Publication date: June 17, 2021Inventors: Liqiang Zhu, Zhuoyan Li, Jiqing Yang
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Patent number: 10980093Abstract: System and method for current control. As an example, the system for current control includes: a transistor including a drain terminal, a gate terminal, and a source terminal, the drain terminal being coupled to one or more light emitting diodes; a resistor coupled to the source terminal of the transistor and configured to generate a resistor voltage related to a current flowing through the one or more emitting diodes; a voltage detector configured to receiver a first input voltage related to a second input voltage received by the one or more light emitting diodes; and a voltage controller coupled to the voltage detector, the resistor, and the gate terminal of the transistor; wherein the voltage detector is further configured to: detect the first input voltage; and generate a control signal based at least in part on the first input voltage.Type: GrantFiled: December 6, 2019Date of Patent: April 13, 2021Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Zhuoyan Li, Jiqing Yang
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Publication number: 20210104949Abstract: System controller and method for a power converter. For example, a system controller for a power converter includes a logic controller configured to generate a modulation signal, and a driver configured to receive the modulation signal, generate a drive signal based at least in part on the modulation signal, and output the drive signal to a switch to affect a current flowing through an inductive winding for a power converter. Additionally, the system controller includes a voltage-to-voltage converter configured to receive a first voltage signal, the modulation signal, and a demagnetization signal, and to generate a second voltage signal based at least in part on the first voltage signal, the modulation signal, and the demagnetization signal.Type: ApplicationFiled: October 19, 2020Publication date: April 8, 2021Inventors: Zhuoyan Li, Liqiang Zhu, Jiqing Yang, Lieyi Fang
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Patent number: 10944325Abstract: System and method for regulating a power conversion system. An example system controller for regulating a power conversion system includes a first controller terminal associated with a first controller voltage and coupled to a first transistor terminal of a first transistor, the first transistor further including a second transistor terminal and a third transistor terminal, the second transistor terminal being coupled to a primary winding of a power conversion system, a second controller terminal associated with a second controller voltage and coupled to the third transistor terminal, and a third controller terminal associated with a third controller voltage. The first controller voltage is equal to a sum of the third controller voltage and a first voltage difference. The second controller voltage is equal to a sum of the third controller voltage and a second voltage difference.Type: GrantFiled: February 22, 2019Date of Patent: March 9, 2021Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Jiqing Yang, Jun Zhou, Liqiang Zhu, Qiang Luo, Lieyi Fang
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Patent number: 10873263Abstract: System controller and method for a power converter. For example, a system controller for a power converter includes a logic controller configured to generate a modulation signal, and a driver configured to receive the modulation signal, generate a drive signal based at least in part on the modulation signal, and output the drive signal to switch to affect a current flowing through an inductive winding for a power converter. Additionally, the system controller includes a voltage-to-voltage converter configured to receive a first voltage signal, the modulation signal, and a demagnetization signal, and to generate a second voltage signal based at least in part on the first voltage signal, the modulation signal, and the demagnetization signal.Type: GrantFiled: October 16, 2018Date of Patent: December 22, 2020Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Zhuoyan Li, Liqiang Zhu, Jiqing Yang, Lieyi Fang
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Publication number: 20200267817Abstract: System and method for voltage conversion to drive one or more light emitting diodes with at least a TRIAC dimmer. For example, the system includes: a phase detector configured to receive a first rectified voltage generated based at least in part on an AC input voltage processed by at least the TRIAC dimmer, the phase detector being further configured to generate a digital signal representing phase information associated with the first rectified voltage; a voltage generator configured to receive the digital signal and generate a DC voltage based at least in part on the digital signal; and a driver configured to receive the DC voltage and affect, based at least in part on the DC voltage, a current flowing through the one or more light emitting diodes; wherein the current changes with the phase information according to a predetermined function.Type: ApplicationFiled: February 14, 2020Publication date: August 20, 2020Inventors: JIQING YANG, ZHUOYAN LI, LIQIANG ZHU, JUN ZHOU
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Publication number: 20200221555Abstract: System and method for current control. As an example, the system for current control includes: a transistor including a drain terminal, a gate terminal, and a source terminal, the drain terminal being coupled to one or more light emitting diodes; a resistor coupled to the source terminal of the transistor and configured to generate a resistor voltage related to a current flowing through the one or more emitting diodes; a voltage detector configured to receiver a first input voltage related to a second input voltage received by the one or more light emitting diodes; and a voltage controller coupled to the voltage detector, the resistor, and the gate terminal of the transistor; wherein the voltage detector is further configured to: detect the first input voltage; and generate a control signal based at least in part on the first input voltage.Type: ApplicationFiled: December 6, 2019Publication date: July 9, 2020Inventors: Liqiang ZHU, Zhuoyan LI, Jiqing YANG
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Patent number: 10687397Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.Type: GrantFiled: February 7, 2019Date of Patent: June 16, 2020Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Jiqing Yang, Zhuoyan Li, Lieyi Fang
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Publication number: 20190327810Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.Type: ApplicationFiled: February 7, 2019Publication date: October 24, 2019Inventors: LIQIANG ZHU, JIQING YANG, ZHUOYAN LI, LIEYI FANG
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Publication number: 20190326820Abstract: System and method for regulating a power conversion system. An example system controller for regulating a power conversion system includes a first controller terminal associated with a first controller voltage and coupled to a first transistor terminal of a first transistor, the first transistor further including a second transistor terminal and a third transistor terminal, the second transistor terminal being coupled to a primary winding of a power conversion system, a second controller terminal associated with a second controller voltage and coupled to the third transistor terminal, and a third controller terminal associated with a third controller voltage. The first controller voltage is equal to a sum of the third controller voltage and a first voltage difference. The second controller voltage is equal to a sum of the third controller voltage and a second voltage difference.Type: ApplicationFiled: February 22, 2019Publication date: October 24, 2019Inventors: Jiqing Yang, Jun Zhou, Liquaing Zhu, Qiang Luo, Lieyi Fang
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Patent number: 10448469Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.Type: GrantFiled: December 8, 2017Date of Patent: October 15, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Jiqing Yang, Zhuoyan Li, Lieyi Fang
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Patent number: 10342087Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.Type: GrantFiled: July 13, 2017Date of Patent: July 2, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Jiqing Yang, Zhuoyan Li, Lieyi Fang
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Patent number: 10334677Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.Type: GrantFiled: July 13, 2017Date of Patent: June 25, 2019Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Liqiang Zhu, Jiqing Yang, Zhuoyan Li, Lieyi Fang
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Publication number: 20190165683Abstract: Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a switch, a first resistor and a second resistor. The first operational amplifier includes a first input terminal, a second input terminal and a first output terminal, the first input terminal being configured to receive a reference signal. The first transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being configured to receive a first amplified signal from the first output terminal, the third transistor terminal being coupled to the second input terminal.Type: ApplicationFiled: November 29, 2018Publication date: May 30, 2019Inventors: LIQIANG ZHU, Jiqing Yang, Yaozhang Chen, Zhuoyan Li, Qiang Luo, Lieyi Fang