Patents by Inventor Min-Hung Hu
Min-Hung Hu 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: 9411354Abstract: A device of triggering and generating temperature coefficient current for generating a temperature coefficient current includes a positive temperature coefficient current generating unit, for generating a first positive temperature coefficient current, a negative temperature coefficient current generating unit, for generating a first negative temperature coefficient current, and a triggering unit, for triggering to generate the temperature coefficient current according to a triggering temperature and a current difference between the first positive temperature coefficient current and the first negative temperature coefficient current.Type: GrantFiled: July 9, 2012Date of Patent: August 9, 2016Assignee: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Chen-Tsung Wu
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Patent number: 9389623Abstract: A voltage converting device with a self-reference feature for an electronic system includes a differential current generating module, implemented in a Complementary metal-oxide-semiconductor (CMOS) processing for generating a differential current pair according to a converting voltage; and a voltage converting module, coupled to the differential current generating module, a first supply voltage and a second supply voltage of the electronic system for generating the converting voltage according to the differential current pair, the first supply voltage and the second supply voltage.Type: GrantFiled: December 20, 2013Date of Patent: July 12, 2016Assignee: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Pin-Han Su, Chen-Tsung Wu, Chiu-Huang Huang, Chun-Wei Huang
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Publication number: 20160011615Abstract: A current source for quickly adjusting an output current includes a constant current generation module, coupled to a control node, for generating a predefined current flowing through the control node in order to determine a voltage of the control node; a capacitor, coupled to an output terminal of the current source; a current variation detection module, coupled between the control node and the capacitor, for generating a variation on the voltage of the control node via the capacitor when the output terminal of the current source receives an instant current variation; and a trans-conductance amplifier, coupled between the control node and the output terminal, for changing a magnitude of the output current of the output terminal when the variation on the voltage of the control node is generated.Type: ApplicationFiled: November 25, 2014Publication date: January 14, 2016Inventors: Min-Hung Hu, Chiu-Huang Huang, Chen-Tsung Wu, Chun-Wei Huang, Pin-Han Su
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Patent number: 9213349Abstract: The present invention discloses a bandgap reference circuit. The bandgap reference circuit includes an operational transconductance amplifier, and a reference generation circuit. The operational transconductance amplifier includes a self-biased operational transconductance amplifier, for utilizing an area difference between bipolar junction transistors of an input pair to generate a first positive temperature coefficient current to bias the input pair, and generating a positive temperature coefficient control voltage and a negative temperature coefficient control voltage; and a feedback voltage amplifier, for amplifying the negative temperature coefficient control voltage, and outputting a reference voltage to the input pair for feedback, to generate a first negative temperature coefficient current. The reference generation circuit generates a summation voltage or a summation current according to the positive temperature coefficient control voltage and the negative temperature coefficient control voltage.Type: GrantFiled: September 1, 2013Date of Patent: December 15, 2015Assignee: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Chiu-Huang Huang, Chen-Tsung Wu
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Patent number: 9152157Abstract: A fast response current source capable of providing an output current is disclosed. The fast response current source includes a constant current generating block, a first feedback capacitor, a first current buffer and a first output current generating block. The constant current generating block provides a first constant current. The first current buffer generates a first buffering current to flow through the first feedback terminal, and changes a current value of the first buffering current in response to the current variation at the first feedback terminal when the voltage at the output terminal is varied. The first output current generating block generates a first output current to flow through the output terminal, and changes a current value of the first output current in response to the variation of the first buffering current when the voltage at the output terminal is varied.Type: GrantFiled: May 14, 2012Date of Patent: October 6, 2015Assignee: Novatek Microelectronics Corp.Inventors: Min-Hung Hu, Chiu-Huang Huang
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Patent number: 9093896Abstract: A multi-power domain operational amplifier includes an input stage circuit, a power domain transforming circuit and an active load. The input stage circuit is configured to transform a set of input voltages into a set of input currents in a first power domain. The power domain transforming circuit is configured to transform the set of input currents into a set of output currents in a second power domain. The active load is configured to generate an output voltage according to the set of output currents. A common mode range of the output voltage is shifted as compared with a common mode range of the set of input voltages.Type: GrantFiled: November 7, 2014Date of Patent: July 28, 2015Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Min-Hung Hu, Chiu-Huang Huang, Chen-Tsung Wu
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Patent number: 9093895Abstract: A multi-power domain operational amplifier includes an input stage circuit, a power domain transforming circuit and an active load. The input stage circuit is configured to transform a set of input voltages into a set of input currents in a first power domain. The power domain transforming circuit is configured to transform the set of input currents into a set of output currents in a second power domain. The active load is configured to generate an output voltage according to the set of output currents. A common mode range of the output voltage is shifted as compared with a common mode range of the set of input voltages.Type: GrantFiled: July 25, 2012Date of Patent: July 28, 2015Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Min-Hung Hu, Chiu-Huang Huang, Chen-Tsung Wu
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Publication number: 20150061629Abstract: A multi-power domain operational amplifier includes an input stage circuit, a power domain transforming circuit and an active load. The input stage circuit is configured to transform a set of input voltages into a set of input currents in a first power domain. The power domain transforming circuit is configured to transform the set of input currents into a set of output currents in a second power domain. The active load is configured to generate an output voltage according to the set of output currents. A common mode range of the output voltage is shifted as compared with a common mode range of the set of input voltages.Type: ApplicationFiled: November 7, 2014Publication date: March 5, 2015Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Min-Hung HU, Chiu-Huang HUANG, Chen-Tsung WU
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Publication number: 20150042297Abstract: A voltage converting device with a self-reference feature for an electronic system includes a differential current generating module, implemented in a Complementary metal-oxide-semiconductor (CMOS) processing for generating a differential current pair according to a converting voltage; and a voltage converting module, coupled to the differential current generating module, a first supply voltage and a second supply voltage of the electronic system for generating the converting voltage according to the differential current pair, the first supply voltage and the second supply voltage.Type: ApplicationFiled: December 20, 2013Publication date: February 12, 2015Applicant: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Pin-Han Su, Chen-Tsung Wu, Chiu-Huang Huang, Chun-Wei Huang
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Publication number: 20140306676Abstract: A compensation module for a voltage regulation device having a gain stage, an output stage and a miller compensation module includes a low-output-impedance non-inverting amplifier unit coupled to a gain output of the gain stage and an output-stage input of the output stage.Type: ApplicationFiled: March 27, 2014Publication date: October 16, 2014Applicant: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Pin-Han Su, Chun-Wei Huang, Chen-Tsung Wu, Chiu-Huang Huang
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Patent number: 8766611Abstract: A reference voltage generation circuit includes: a bandgap reference circuit, generating a plurality of initial currents with different temperature coefficients; a base voltage generation circuit, combining the initial current into a combined current, and converting the combined current into one or more base voltages; a bias current source circuit, generating one or more bias currents based on at least one of the initial currents; and one or more regulating output circuit, each converting a respective one of the one or more bias currents into an increment voltage and adding the increment voltage to the base voltage to generate a respective output voltage. Each output voltage may have its respective temperature coefficient.Type: GrantFiled: August 8, 2011Date of Patent: July 1, 2014Assignee: Novatek Microelectronics Corp.Inventors: Min-Hung Hu, Chen-Tsung Wu, Zhen-Guo Ding, Pin-Han Su
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Patent number: 8749220Abstract: A low noise current buffer circuit includes a first transistor, for receiving an input current, a second transistor, for draining a first current from a drain of the second transistor according to the input current received by the first transistor, a third transistor, for outputting first current, a fourth transistor, for outputting a second current to an output resistor, to generate an output voltage, and a feedback capacitor, for eliminating impacts of noise of a system voltage on the output voltage.Type: GrantFiled: October 24, 2011Date of Patent: June 10, 2014Assignee: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Zhen-Guo Ding
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Publication number: 20140091780Abstract: A reference voltage generator including a reference voltage generating unit is provided. The reference voltage generating unit receives a first bias voltage current and a first mirror current and generates a reference voltage. The reference voltage generating unit includes a first metal-oxide-semiconductor (MOS) transistor, a second MOS transistor, a first impedance providing element and a second impedance providing element. The first and the second MOS transistors operate in a sub-threshold region so as to generate a first gate-source voltage and a second gate-source voltage having a negative temperature coefficient. The first impedance providing element is configured to generate a first current having a positive temperature coefficient. The second impedance providing element is configured to generate a first voltage having a negative temperature coefficient at its first terminal. The reference voltage is equal to a sum of the second gate-source voltage and the first voltage.Type: ApplicationFiled: June 26, 2013Publication date: April 3, 2014Inventors: Min-Hung Hu, Chiu-Huang Huang, Chen-Tsung Wu, Juin-Wei Huang, Pin-Han Su
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Publication number: 20140077789Abstract: The present invention discloses a bandgap reference circuit. The bandgap reference circuit includes an operational transconductance amplifier, and a reference generation circuit. The operational transconductance amplifier includes a self-biased operational transconductance amplifier, for utilizing an area difference between bipolar junction transistors of an input pair to generate a first positive temperature coefficient current to bias the input pair, and generating a positive temperature coefficient control voltage and a negative temperature coefficient control voltage; and a feedback voltage amplifier, for amplifying the negative temperature coefficient control voltage, and outputting a reference voltage to the input pair for feedback, to generate a first negative temperature coefficient current. The reference generation circuit generates a summation voltage or a summation current according to the positive temperature coefficient control voltage and the negative temperature coefficient control voltage.Type: ApplicationFiled: September 1, 2013Publication date: March 20, 2014Applicant: NOVATEK Microelectronics Corp.Inventors: Min-Hung Hu, Chiu-Huang Huang, Chen-Tsung Wu
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Publication number: 20130221942Abstract: A multi-power domain operational amplifier includes an input stage circuit, a power domain transforming circuit and an active load. The input stage circuit is configured to transform a set of input voltages into a set of input currents in a first power domain. The power domain transforming circuit is configured to transform the set of input currents into a set of output currents in a second power domain. The active load is configured to generate an output voltage according to the set of output currents. A common mode range of the output voltage is shifted as compared with a common mode range of the set of input voltages.Type: ApplicationFiled: July 25, 2012Publication date: August 29, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Min-Hung HU, Chiu-Huang Huang, Chen-Tsung Wu
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Publication number: 20130009622Abstract: A device of triggering and generating temperature coefficient current for generating a temperature coefficient current includes a positive temperature coefficient current generating unit, for generating a first positive temperature coefficient current, a negative temperature coefficient current generating unit, for generating a first negative temperature coefficient current, and a triggering unit, for triggering to generate the temperature coefficient current according to a triggering temperature and a current difference between the first positive temperature coefficient current and the first negative temperature coefficient current.Type: ApplicationFiled: July 9, 2012Publication date: January 10, 2013Inventors: Min-Hung Hu, Chen-Tsung Wu
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Publication number: 20120319665Abstract: A fast response current source capable of providing an output current is disclosed. The fast response current source includes a constant current generating block, a first feedback capacitor, a first current buffer and a first output current generating block. The constant current generating block provides a first constant current. The first current buffer generates a first buffering current to flow through the first feedback terminal, and changes a current value of the first buffering current in response to the current variation at the first feedback terminal when the voltage at the output terminal is varied. The first output current generating block generates a first output current to flow through the output terminal, and changes a current value of the first output current in response to the variation of the first buffering current when the voltage at the output terminal is varied.Type: ApplicationFiled: May 14, 2012Publication date: December 20, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Min-Hung Hu, Chiu-Huang Huang
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Publication number: 20120126616Abstract: A reference voltage generation circuit includes: a bandgap reference circuit, generating a plurality of initial currents with different temperature coefficients; a base voltage generation circuit, combining the initial current into a combined current, and converting the combined current into one or more base voltages; a bias current source circuit, generating one or more bias currents based on at least one of the initial currents; and one or more regulating output circuit, each converting a respective one of the one or more bias currents into an increment voltage and adding the increment voltage to the base voltage to generate a respective output voltage. Each output voltage may have its respective temperature coefficient.Type: ApplicationFiled: August 8, 2011Publication date: May 24, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Min-Hung HU, Chen-Tsung Wu, Zhen-Guo Ding, Pin-Han Su
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Publication number: 20120098506Abstract: A low noise current buffer circuit includes a first transistor, for receiving an input current, a second transistor, for draining a first current from a drain of the second transistor according to the input current received by the first transistor, a third transistor, for outputting first current, a fourth transistor, for outputting a second current to an output resistor, to generate an output voltage, and a feedback capacitor, for eliminating impacts of noise of a system voltage on the output voltage.Type: ApplicationFiled: October 24, 2011Publication date: April 26, 2012Inventors: Min-Hung Hu, Zhen-Guo Ding
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Publication number: 20120043955Abstract: The present invention provides a bandgap reference circuit. The bandgap reference circuit includes a first bipolar junction transistor, a first resistor, for generating a proportional to absolute temperature current, a second resistor, for generating a complementary to absolute temperature current, a first operational amplifier, coupled with the first bipolar junction transistor and the first resistor, a second operational amplifier, coupled with the first bipolar junction transistor and the second resistor, and a zero temperature correlated current generator, for summing the proportional to absolute temperature current and the complementary to absolute temperature current, to generate a zero temperature correlated current.Type: ApplicationFiled: June 8, 2011Publication date: February 23, 2012Inventors: Min-Hung Hu, Zhen-Guo Ding, Chen-Tsung Wu