Patents by Inventor Tao Tao Huang
Tao Tao Huang 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: 10506680Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: GrantFiled: January 2, 2019Date of Patent: December 10, 2019Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Tao Tao Huang, Yi Jun Duan
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Publication number: 20190141811Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: ApplicationFiled: January 2, 2019Publication date: May 9, 2019Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Tao Tao HUANG, Yi Jun DUAN
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Patent number: 10212775Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: GrantFiled: April 18, 2018Date of Patent: February 19, 2019Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Tao Tao Huang, Yi Jun Duan
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Patent number: 10186193Abstract: A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and an output coupled to drive a control node of the second transistor with the stored voltage. A current source supplies current through a switch to the capacitance and the input of the voltage buffer circuit. The switch is configured to be actuated by an oscillating enable signal so as to cyclically source current from the current source to the capacitance and cause a stepped increase in the stored voltage which is applied by the buffer circuit to the control node of the second transistor.Type: GrantFiled: May 3, 2017Date of Patent: January 22, 2019Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Meng Wang, Tao Tao Huang
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Publication number: 20180242419Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: ApplicationFiled: April 18, 2018Publication date: August 23, 2018Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Tao Tao Huang, Yi Jun Duan
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Patent number: 9980333Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: GrantFiled: April 13, 2017Date of Patent: May 22, 2018Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Yi Jun Duan, Tao Tao Huang
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Publication number: 20170236468Abstract: A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and an output coupled to drive a control node of the second transistor with the stored voltage. A current source supplies current through a switch to the capacitance and the input of the voltage buffer circuit. The switch is configured to be actuated by an oscillating enable signal so as to cyclically source current from the current source to the capacitance and cause a stepped increase in the stored voltage which is applied by the buffer circuit to the control node of the second transistor.Type: ApplicationFiled: May 3, 2017Publication date: August 17, 2017Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Meng Wang, Tao Tao Huang
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Publication number: 20170223796Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: ApplicationFiled: April 13, 2017Publication date: August 3, 2017Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Yi Jun Duan, Tao Tao Huang
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Patent number: 9672762Abstract: A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and an output coupled to drive a control node of the second transistor with the stored voltage. A current source supplies current through a switch to the capacitance and the input of the voltage buffer circuit. The switch is configured to be actuated by an oscillating enable signal so as to cyclically source current from the current source to the capacitance and cause a stepped increase in the stored voltage which is applied by the buffer circuit to the control node of the second transistor.Type: GrantFiled: August 5, 2015Date of Patent: June 6, 2017Assignee: STMICROELECTRONICS (SHENZHEN) R&D CO. LTDInventors: Meng Wang, Tao Tao Huang
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Patent number: 9661701Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: GrantFiled: December 11, 2015Date of Patent: May 23, 2017Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Tao Tao Huang, Yi Jun Duan
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Patent number: 9370059Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: GrantFiled: August 8, 2014Date of Patent: June 14, 2016Assignee: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD.Inventors: Yi Jun Duan, Tao Tao Huang
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Publication number: 20160119999Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: ApplicationFiled: December 11, 2015Publication date: April 28, 2016Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Tao Tao Huang, Yi Jun Duan
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Patent number: 9236854Abstract: A drive circuit includes a first transistor coupled in series with a second transistor at a first intermediate node coupled to a load. An amplifier has an output driving a control terminal of the second transistor. The amplifier includes a first input coupled to a second intermediate node and a second input coupled to a reference voltage. A feedback circuit is coupled between the first intermediate node and the second intermediate node. A slope control circuit is coupled the second intermediate node. The slope control circuit injects a selected value of current into the second intermediate node, that current operating to control the output of the amplifier in setting a slope for change in voltage at the first intermediate node.Type: GrantFiled: May 7, 2013Date of Patent: January 12, 2016Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Meng Wang, Tao Tao Huang
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Publication number: 20150339963Abstract: A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and an output coupled to drive a control node of the second transistor with the stored voltage. A current source supplies current through a switch to the capacitance and the input of the voltage buffer circuit. The switch is configured to be actuated by an oscillating enable signal so as to cyclically source current from the current source to the capacitance and cause a stepped increase in the stored voltage which is applied by the buffer circuit to the control node of the second transistor.Type: ApplicationFiled: August 5, 2015Publication date: November 26, 2015Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTDInventors: Meng Wang, Tao Tao Huang
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Patent number: 9136762Abstract: A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and an output coupled to drive a control node of the second transistor with the stored voltage. A current source supplies current through a switch to the capacitance and the input of the voltage buffer circuit. The switch is configured to be actuated by an oscillating enable signal so as to cyclically source current from the current source to the capacitance and cause a stepped increase in the stored voltage which is applied by the buffer circuit to the control node of the second transistor.Type: GrantFiled: May 2, 2013Date of Patent: September 15, 2015Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventors: Meng Wang, Tao Tao Huang
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Publication number: 20150042229Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.Type: ApplicationFiled: August 8, 2014Publication date: February 12, 2015Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD.Inventors: Yi Jun Duan, Tao Tao Huang
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Patent number: 8907705Abstract: A fully integrated ramp generator circuit includes a first current generator that sources current to first capacitor through a first transistor that is gate controlled by the complement of a periodic signal. The ramping voltage stored on the first capacitor is buffered to an output node as a ramp output signal. A second transistor couples the output node to the first current generator and is gate controlled by the periodic signal. The periodic signal is generated at the output of a flip-flop that receives an input clock signal and reset signal. The reset signal is generated by a comparator circuit operable to compare the voltage on a second capacitor to a reference. The second capacitor is charged by a second current source and discharged by a third transistor that is gate controlled by the periodic signal.Type: GrantFiled: October 10, 2012Date of Patent: December 9, 2014Assignee: STMicroelectronics (Shenzhen) R&D Co. Ltd.Inventors: Tao Tao Huang, Meng Wang
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Publication number: 20130313993Abstract: A drive circuit includes a first transistor coupled in series with a second transistor at a first intermediate node coupled to a load. An amplifier has an output driving a control terminal of the second transistor. The amplifier includes a first input coupled to a second intermediate node and a second input coupled to a reference voltage. A feedback circuit is coupled between the first intermediate node and the second intermediate node. A slope control circuit is coupled the second intermediate node. The slope control circuit injects a selected value of current into the second intermediate node, that current operating to control the output of the amplifier in setting a slope for change in voltage at the first intermediate node.Type: ApplicationFiled: May 7, 2013Publication date: November 28, 2013Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.Inventors: Meng Wang, Tao Tao Huang
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Publication number: 20130300394Abstract: A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and an output coupled to drive a control node of the second transistor with the stored voltage. A current source supplies current through a switch to the capacitance and the input of the voltage buffer circuit. The switch is configured to be actuated by an oscillating enable signal so as to cyclically source current from the current source to the capacitance and cause a stepped increase in the stored voltage which is applied by the buffer circuit to the control node of the second transistor.Type: ApplicationFiled: May 2, 2013Publication date: November 14, 2013Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.Inventors: Meng Wang, Tao Tao Huang