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公开(公告)号：US11561663B2
公开(公告)日：2023-01-24
申请号：US17038546
申请日：2020-09-30
Applicant: STMicroelectronics S.r.l.
Inventor： Calogero Marco Ippolito , Angelo Recchia , Antonio Cicero , Pierpaolo Lombardo , Michele Vaiana
Abstract: A touchscreen resistive sensor includes a network of resistive sensor branches coupled to a number of sensor nodes arranged at touch locations of the touchscreen. A test sequence is performed by sequentially applying to each sensor node a reference voltage level, jointly coupling to a common line the other nodes, sensing a voltage value at the common line, and declaring a short circuit condition as a result of the voltage value sensed at the common line reaching a short circuit threshold. A current value level flowing at the sensor node to which the reference voltage level is applied is sensed and a malfunction of the resistive sensor branch coupled with the sensor node to which a reference voltage level is applied is generated as a result of the current value sensed at the sensor node reaching an upper threshold or lower threshold.
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公开(公告)号：US11709185B2
公开(公告)日：2023-07-25
申请号：US17670858
申请日：2022-02-14
Applicant: STMicroelectronics S.r.l.
Inventor： Michele Vaiana , Calogero Marco Ippolito , Angelo Recchia , Antonio Cicero , Pierpaolo Lombardo
CPC classification number: G01R19/0038 , G01R19/0069 , G05F3/08 , H03B5/04 , H03F1/0205 , H03F3/4565
Abstract: An amplification interface includes first and second differential input terminals, first and second differential output terminals providing first and second output voltages defining a differential output signal, and first and second analog integrators coupled between the first and second differential input terminals and the first and second differential output terminals, the first and second analog integrators being resettable by a reset signal. A control circuit generates the reset signal such that the first and second analog integrators are periodically reset during a reset interval and activated during a measurement interval, receives a control signal indicative of offsets in the measurement sensor current and the reference sensor current, and generates a drive signal as a function of the control signal. First and second current generators coupled first and second compensation circuits to the first and second differential input terminals as a function of a drive signal.
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公开(公告)号：US10809862B2
公开(公告)日：2020-10-20
申请号：US16523302
申请日：2019-07-26
Applicant: STMicroelectronics S.r.l.
Inventor： Calogero Marco Ippolito , Angelo Recchia , Antonio Cicero , Pierpaolo Lombardo , Michele Vaiana
Abstract: A touchscreen resistive sensor includes a network of resistive sensor branches coupled to a number of sensor nodes arranged at touch locations of the touchscreen. A test sequence is performed by sequentially applying to each sensor node a reference voltage level, jointly coupling to a common line the other nodes, sensing a voltage value at the common line, and declaring a short circuit condition as a result of the voltage value sensed at the common line reaching a short circuit threshold. A current value level flowing at the sensor node to which the reference voltage level is applied is sensed and a malfunction of the resistive sensor branch coupled with the sensor node to which a reference voltage level is applied is generated as a result of the current value sensed at the sensor node reaching an upper threshold or lower threshold.
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公开(公告)号：US20200050305A1
公开(公告)日：2020-02-13
申请号：US16523302
申请日：2019-07-26
Applicant: STMicroelectronics S.r.l.
Inventor： Calogero Marco Ippolito , Angelo Recchia , Antonio Cicero , Pierpaolo Lombardo , Michele Vaiana
Abstract: A touchscreen resistive sensor includes a network of resistive sensor branches coupled to a number of sensor nodes arranged at touch locations of the touchscreen. A test sequence is performed by sequentially applying to each sensor node a reference voltage level, jointly coupling to a common line the other nodes, sensing a voltage value at the common line, and declaring a short circuit condition as a result of the voltage value sensed at the common line reaching a short circuit threshold. A current value level flowing at the sensor node to which the reference voltage level is applied is sensed and a malfunction of the resistive sensor branch coupled with the sensor node to which a reference voltage level is applied is generated as a result of the current value sensed at the sensor node reaching an upper threshold or lower threshold.
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公开(公告)号：US09835574B2
公开(公告)日：2017-12-05
申请号：US14726823
申请日：2015-06-01
Applicant: STMicroelectronics S.r.l.
Inventor： Pasquale Biancolillo , Angelo Recchia , Pasquale Franco , Antonio Cicero , Giuseppe Bruno
CPC classification number: G01N27/121 , G01N27/18
Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.
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Patent Agency Ranking
公开(公告)号：US10451575B2
公开(公告)日：2019-10-22
申请号：US15797078
申请日：2017-10-30
Applicant: STMicroelectronics S.r.l.
Inventor： Pasquale Biancolillo , Angelo Recchia , Pasquale Franco , Antonio Cicero , Giuseppe Bruno
Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.
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公开(公告)号：US10180406B2
公开(公告)日：2019-01-15
申请号：US15808408
申请日：2017-11-09
Applicant: STMicroelectronics S.r.l.
Inventor： Pasquale Biancolillo , Angelo Recchia , Pasquale Franco , Antonio Cicero , Giuseppe Bruno
Abstract: A semiconductor gas sensor device includes a first cavity that is enclosed by opposing first and second semiconductor substrate slices. At least one conducting filament is provided to extend over the first cavity, and a passageway is provided to permit gas to enter the first cavity. The sensor device may further including a second cavity that is hermetically enclosed by the opposing first and second semiconductor substrate slices. At least one another conducting filament is provided to extend over the second cavity.
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公开(公告)号：US20180052129A1
公开(公告)日：2018-02-22
申请号：US15797078
申请日：2017-10-30
Applicant: STMicroelectronics S.r.l.
Inventor： Pasquale Biancolillo , Angelo Recchia , Pasquale Franco , Antonio Cicero , Giuseppe Bruno
CPC classification number: G01N27/121 , G01N27/18
Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.
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公开(公告)号：US20160003757A1
公开(公告)日：2016-01-07
申请号：US14726823
申请日：2015-06-01
Applicant: STMicroelectronics S.r.l.
Inventor： Pasquale Biancolillo , Angelo Recchia , Pasquale Franco , Antonio Cicero , Giuseppe Bruno
IPC: G01N27/12
CPC classification number: G01N27/121 , G01N27/18
Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.
Abstract translation: 气体测量装置使用包括暴露于气体的感测电阻和不暴露于气体的参考电阻的气体传感器来测量气体。 气体测量装置向传感器施加第一电流值和第二电流值。 检测器用于分别作为第一电流值和第二电流值的函数来检测暴露于气体的感测电阻相对于参考电阻的第一电阻变化和第二电阻变化。 然后根据相对湿度的电阻变化作为第一和第二电阻变化和第一常数的函数来确定。 然后根据气体含量的电阻变化确定为第一和第二电阻变化和第二（不同）常数的函数。
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公开(公告)号：US11275100B2
公开(公告)日：2022-03-15
申请号：US16781598
申请日：2020-02-04
Applicant: STMicroelectronics S.r.l.
Inventor： Michele Vaiana , Calogero Marco Ippolito , Angelo Recchia , Antonio Cicero , Pierpaolo Lombardo
Abstract: An amplification interface includes an input terminal receiving a sensor current and an output terminal supplying an output voltage. An analog integrator is connected to the input terminal and supplies the output voltage. A current generator is connected to the input of the analog integrator and generates a compensation current based on a drive signal. A control circuit generates the drive signal for the current generator based on a control signal representing an offset in the sensor current supplied by the sensor. The current generator generates, based on the driving signal, a positive or negative current. The control circuit determines a first duration and a second duration as a function of the control signal representing the offset in the sensor current, during the measurement interval, and sets the driving signal to a first logic value for the first duration and to a second logic value for the second duration.
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