Patents by Inventor Shurong Gu
Shurong Gu 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: 11619607Abstract: Techniques for generating a diagnostic waveform for a sensor are provided. In an example, a control circuit for an electrochemical sensor can include power supply inputs configured to receive a supply voltage, a first signal generator configured to receive control information and to generate a first signal on a first output using the supply voltage and the control information, a second signal generator configured to receive the control information and to provide a second signal on a second output, using the supply voltage and the control information. An output voltage between the first output and the second output, in a diagnostic mode of operation of the control circuit, can include a periodic signal having a peak-to-peak voltage greater than the supply voltage.Type: GrantFiled: July 6, 2020Date of Patent: April 4, 2023Assignee: Analog Devices International Unlimited CompanyInventors: Shurong Gu, Hanqing Wang, GuangYang Qu, Dennis A. Dempsey
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Patent number: 11057002Abstract: This disclosure describes techniques for selecting one of a plurality of modes in which to operate an amplifier. The techniques include configuring input routing circuitry, coupled to first and second inputs of the amplifier, based on the selected one of the plurality of modes; selectively applying a resistance to an output of the amplifier, using feedback routing circuitry, based on the selected one of the plurality of modes; and selectively applying one of a plurality of reference voltages, using reference voltage routing circuitry, coupled to the first and the second inputs of the amplifier, based on the selected one of the plurality of modes.Type: GrantFiled: June 18, 2019Date of Patent: July 6, 2021Assignee: Analog Devices International Unlimited CompanyInventors: Li Wang, Hanqing Wang, Tony Yincai Liu, Shurong Gu
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Publication number: 20200403578Abstract: This disclosure describes techniques for selecting one of a plurality of modes in which to operate an amplifier. The techniques include configuring input routing circuitry, coupled to first and second inputs of the amplifier, based on the selected one of the plurality of modes; selectively applying a resistance to an output of the amplifier, using feedback routing circuitry, based on the selected one of the plurality of modes; and selectively applying one of a plurality of reference voltages, using reference voltage routing circuitry, coupled to the first and the second inputs of the amplifier, based on the selected one of the plurality of modes.Type: ApplicationFiled: June 18, 2019Publication date: December 24, 2020Inventors: Li Wang, Hanqing Wang, Tony Yincai Liu, Shurong Gu
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Publication number: 20200333288Abstract: Techniques for generating a diagnostic waveform for a sensor are provided. In an example, a control circuit for an electrochemical sensor can include power supply inputs configured to receive a supply voltage, a first signal generator configured to receive control information and to generate a first signal on a first output using the supply voltage and the control information, a second signal generator configured to receive the control information and to provide a second signal on a second output, using the supply voltage and the control information. An output voltage between the first output and the second output, in a diagnostic mode of operation of the control circuit, can include a periodic signal having a peak-to-peak voltage greater than the supply voltage.Type: ApplicationFiled: July 6, 2020Publication date: October 22, 2020Inventors: Shurong Gu, Hanqing Wang, GuangYang Qu, Dennis A. Dempsey
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Patent number: 10739306Abstract: Techniques for generating a diagnostic waveform for a sensor are provided. In an example, a control circuit for an electrochemical sensor can include power supply inputs configured to receive a supply voltage, a first signal generator configured to receive control information and to generate a first signal on a first output using the supply voltage and the control information, a second signal generator configured to receive the control information and to provide a second signal on a second output, using the supply voltage and the control information. An output voltage between the first output and the second output, in a diagnostic mode of operation of the control circuit, can include a periodic signal having a peak-to-peak voltage greater than the supply voltage.Type: GrantFiled: May 4, 2017Date of Patent: August 11, 2020Assignee: Analog Devices International Unlimited CompanyInventors: Shurong Gu, Hanqing Wang, GuangYang Qu, Dennis A. Dempsey
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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: 20180321187Abstract: Techniques for generating a diagnostic waveform for a sensor are provided. In an example, a control circuit for an electrochemical sensor can include power supply inputs configured to receive a supply voltage, a first signal generator configured to receive control information and to generate a first signal on a first output using the supply voltage and the control information, a second signal generator configured to receive the control information and to provide a second signal on a second output, using the supply voltage and the control information. An output voltage between the first output and the second output, in a diagnostic mode of operation of the control circuit, can include a periodic signal having a peak-to-peak voltage greater than the supply voltage.Type: ApplicationFiled: May 4, 2017Publication date: November 8, 2018Inventors: Shurong Gu, Hanqing Wang, GuangYang Qu, Dennis A. Dempsey
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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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Patent number: 9941894Abstract: A multiple output, multiple impedance string digital-to-analog converter (DAC) circuit can provide a first output having a first resolution in response to a first digital input signal and a second output having a second resolution in response to a second digital input signal. A main impedance string and a secondary impedance string can be coupled using switching networks to provide a first DAC output. By coupling additional switches to the main impedance string and by sharing the main impedance string, a second DAC output can be realized.Type: GrantFiled: May 4, 2017Date of Patent: April 10, 2018Assignee: Analog Devices GlobalInventors: Shurong Gu, Dennis A. Dempsey, GuangYang Qu, Hanqing Wang, Tony Yincai Liu