Patents by Inventor Yi Jun Duan
Yi Jun Duan 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: 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
-
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
-
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
-
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
-
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
-
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
-
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
-
Patent number: 9490762Abstract: Described herein is an electronic device. The electronic device includes a unity gain buffer having an input coupled to an input node to receive an input voltage and an output coupled to an output node. A current sink circuit operates in a sleep mode in an absence of a sink current flowing into the output node, and operates in a sinking mode to sink the sink current from the output node to a reference supply node when the sink current flows into the output node.Type: GrantFiled: April 8, 2015Date of Patent: November 8, 2016Assignee: STMicroelectronics (Shenzhen) R&D Co. LtdInventor: Yi Jun Duan
-
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
-
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
-
Publication number: 20160100468Abstract: A bidirectional voltage differentiator circuit comprises start-up circuitry, sensing circuitry, and output circuitry coupled to logic circuitry. The start-up circuitry acts to start-up the sensing circuitry when the circuit is powered on, and accelerates the response of the sensing circuitry thereafter. The sensing circuitry senses variation in an input voltage applied to an input node. Responsive to the voltage variation sensed by the sensing circuitry, the output circuitry produces a state change at a first or second output node. The logic circuitry receives the states of the output nodes and produces a logic output signal to indicate the occurrence of the variation sensed in the input voltage. The voltage sensing circuit is operable to sense variation of the input voltage regardless of whether the voltage is rising or falling and without regard to the DC value of the input voltage.Type: ApplicationFiled: December 11, 2015Publication date: April 7, 2016Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventor: Yi Jun Duan
-
Publication number: 20150214910Abstract: Described herein is an electronic device. The electronic device includes a unity gain buffer having an input coupled to an input node to receive an input voltage and an output coupled to an output node. A current sink circuit operates in a sleep mode in an absence of a sink current flowing into the output node, and operates in a sinking mode to sink the sink current from the output node to a reference supply node when the sink current flows into the output node.Type: ApplicationFiled: April 8, 2015Publication date: July 30, 2015Applicant: STMicroelectronics (Shenzhen) R&D Co. LtdInventor: Yi Jun Duan
-
Patent number: 9030258Abstract: An amplifier circuit includes an input terminal and an output terminal. A current sinking transistor includes a first conduction terminal coupled to the output terminal and a second conduction terminal coupled to a reference supply node. A voltage sensing circuit has a first input coupled to the input terminal and a second input coupled to the output terminal. An output of the voltage sensing circuit is coupled to the control terminal of the current sinking transistor. The voltage sensing circuit functions to sense a rise in the voltage at the output terminal which exceeds the voltage at the input terminal, and respond thereto by activating the current sinking transistor.Type: GrantFiled: May 2, 2013Date of Patent: May 12, 2015Assignee: STMicroelectronics (Shenzhen) R&D Co., Ltd.Inventor: Yi Jun Duan
-
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
-
Publication number: 20130314159Abstract: An amplifier circuit includes an input terminal and an output terminal. A current sinking transistor includes a first conduction terminal coupled to the output terminal and a second conduction terminal coupled to a reference supply node. A voltage sensing circuit has a first input coupled to the input terminal and a second input coupled to the output terminal. An output of the voltage sensing circuit is coupled to the control terminal of the current sinking transistor. The voltage sensing circuit functions to sense a rise in the voltage at the output terminal which exceeds the voltage at the input terminal, and respond thereto by activating the current sinking transistor.Type: ApplicationFiled: May 2, 2013Publication date: November 28, 2013Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD.Inventor: Yi Jun Duan