Patents by Inventor Junbiao Ding
Junbiao Ding 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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Publication number: 20230251302Abstract: An apparatus comprises an integrated circuit that includes an input to receive an electrical input signal from an electronic sensor, wherein the input signal includes a direct current (DC) offset and a varying signal component; a digital-to-analog converter (DAC) circuit configured to subtract the DC offset from the input signal; a programmable gain amplifier (PGA) operatively coupled to the DAC circuit, wherein the PGA circuit is configured to apply signal gain to the varying signal component of the input signal; and a measurement circuit configured to generate a measure of the varying signal component.Type: ApplicationFiled: April 7, 2023Publication date: August 10, 2023Inventors: GuangYang Qu, Yincai Tony Liu, Baotian Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding
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Patent number: 11656269Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.Type: GrantFiled: August 31, 2021Date of Patent: May 23, 2023Assignee: Analog Devices International Unlimited CompanyInventors: GuangYang Qu, Yincai Tony Liu, Baotian Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding
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Publication number: 20210405110Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.Type: ApplicationFiled: August 31, 2021Publication date: December 30, 2021Inventors: GuangYang Qu, Yincai Tony Liu, Baotian Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding
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Patent number: 11119143Abstract: A device and method for measuring the internal impedance of an electronic sensor uses configurable gain stages to selectively apply different excitation signals to the sensor under test in order to ensure adequate signal-to-noise ratio to provide accurate measurement of the internal impedance over a broader range of internal impedances than the prior art.Type: GrantFiled: September 26, 2019Date of Patent: September 14, 2021Assignee: Analog Devices International Unlimited CompanyInventors: GuangYang Qu, Yincai Tony Liu, Baotian Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding
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Publication number: 20200091923Abstract: The present disclosure relates to a digital-to-analog converter (DAC) which includes a resistor string and a transfer function modification circuit. The transfer function modification circuit may be a calibration circuit for calibrating the DAC, The calibration circuit may include a plurality of current sources, which may be current DACs. Each of the current DACS inject current into, or drain current from, a respective node of the resistor string, in order to correct for voltage errors. The injected currents may be positive or negative, depending on the voltage error. The current DACs are controlled by trim codes, which are set dependent on the measured or simulated voltage errors for a given resistor string.Type: ApplicationFiled: September 14, 2018Publication date: March 19, 2020Inventors: Junbiao Ding, Tony Yincai Liu, Dennis A. Dempsey, John Jude O'Donnell
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Patent number: 10574247Abstract: The present disclosure relates to a digital-to-analog converter (DAC) which includes a resistor string and a transfer function modification circuit. The transfer function modification circuit may be a calibration circuit for calibrating the DAC, The calibration circuit may include a plurality of current sources, which may be current DACs. Each of the current DACS inject current into, or drain current from, a respective node of the resistor string, in order to correct for voltage errors. The injected currents may be positive or negative, depending on the voltage error. The current DACs are controlled by trim codes, which are set dependent on the measured or simulated voltage errors for a given resistor string.Type: GrantFiled: September 14, 2018Date of Patent: February 25, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Junbiao Ding, Tony Yincai Liu, Dennis A. Dempsey, John Jude O'Donnell
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Publication number: 20200033398Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.Type: ApplicationFiled: September 26, 2019Publication date: January 30, 2020Inventors: GuangYang Qu, Yincai Tony Liu, Baotain Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding
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Patent number: 10466296Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.Type: GrantFiled: February 15, 2017Date of Patent: November 5, 2019Assignee: Analog Devices GlobalInventors: Guangyang Qu, Yincai Tony Liu, Baotian Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding
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Patent number: 10288674Abstract: A electrochemical or other sensor interface circuit architecture can deliver substantial DC offset bias to an electrochemical or other sensor separately or independently from delivering a time-varying AC excitation signal, which can then be provided with higher resolution, which, in turn, can allow better resolution of the measured response signal providing the impedance characteristic of sensor condition. For example, a differential time-varying AC excitation signal for the sensor condition characteristic can be delivered separately and independently from a differential stable (e.g., DC or other) bias signal, such as by using separate digital-to-analog converters (DACs), so that providing the more stable signal does not limit the resolution and accuracy of the time-varying signal, such as by using up the dynamic range of a single DAC.Type: GrantFiled: May 4, 2017Date of Patent: May 14, 2019Assignee: Analog Devices GlobalInventors: GuangYang Qu, Junbiao Ding, Tony Yincai Liu, Shurong Gu, Yimiao Zhao, Hanqing Wang, Leicheng Chen
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Publication number: 20180321302Abstract: A electrochemical or other sensor interface circuit architecture can deliver substantial DC offset bias to an electrochemical or other sensor separately or independently from delivering a time-varying AC excitation signal, which can then be provided with higher resolution, which, in turn, can allow better resolution of the measured response signal providing the impedance characteristic of sensor condition. For example, a differential time-varying AC excitation signal for the sensor condition characteristic can be delivered separately and independently from a differential stable (e.g., DC or other) bias signal, such as by using separate digital-to-analog converters (DACs), so that providing the more stable signal does not limit the resolution and accuracy of the time-varying signal, such as by using up the dynamic range of a single DAC.Type: ApplicationFiled: May 4, 2017Publication date: November 8, 2018Inventors: GuangYang Qu, Junbiao Ding, Tony Yincai Liu, Shurong Gu, Yimiao Zhao, Hanqing Wang, Leicheng Chen
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Publication number: 20180196101Abstract: An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.Type: ApplicationFiled: February 15, 2017Publication date: July 12, 2018Inventors: Guangyang Qu, Yincai Tony Liu, Baotian Hao, Hanqing Wang, Hengfang Mei, Rengui Luo, Yimiao Zhao, Junbiao Ding