Patents by Inventor Michele Vaiana
Michele Vaiana 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: 20210011569Abstract: 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.Type: ApplicationFiled: September 30, 2020Publication date: January 14, 2021Inventors: Calogero Marco Ippolito, Angelo Recchia, Antonio Cicero, Pierpaolo Lombardo, Michele Vaiana
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Publication number: 20200400507Abstract: A circuit includes a first input terminal, a second input terminal, a third input terminal and an output terminal. A first summation node adds signals at the first and third input terminals. A second summation node subtracts signals at the second and third input terminals. A selector selects between the added signals and subtracted signals in response to a selection signal. The output of the selector is integrated to generate an integrated signal. The integrated signal is compared by a comparator to a threshold, the comparator generating an output signal at the output terminal having a first level and a second level. Feedback of the output signal produces the selection signal causing the selector to select the added signals in response to the first level of the output signal and causing the selector to select the subtracted signals in response to the second level of the output signal.Type: ApplicationFiled: September 3, 2020Publication date: December 24, 2020Applicant: STMicroelectronics S.r.l.Inventors: Michele VAIANA, Paolo PESENTI, Mario CHIRICOSTA, Calogero Marco IPPOLITO, Mario MAIORE
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Patent number: 10866146Abstract: A circuit includes a first current source configured to produce a first current in a first current line through a first diode-connected transistor having a voltage drop across the first diode-connected transistor, the first current being proportional to an absolute temperature via a first proportionality factor; a second current source configured to produce a second current in a second current line through a second diode-connected transistor having a voltage drop across the second diode-connected transistor, the second current being proportional to the absolute temperature via a second proportionality factor; a third current source configured to produce a third current in a third current line through a third diode-connected transistor having a voltage drop across the third diode-connected transistor; and a processing network including a sigma-delta analog-to-digital converter, the processing network being coupled to the, the second, and the third diode-connected transistors.Type: GrantFiled: March 18, 2019Date of Patent: December 15, 2020Assignee: STMICROELECTRONICS S.R.L.Inventors: Calogero Marco Ippolito, Michele Vaiana
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Publication number: 20200333197Abstract: A method of sensing a temperature includes providing a voltage to reverse bias a PN junction of a junction diode. The PN junction has a junction capacitance. The method includes providing a reverse bias voltage change across the PN junction and detecting a value of the junction capacitance in response to the reverse bias voltage change. The value of the junction capacitance is a function of a temperature of the PN junction. An output signal is generated based on the detected junction capacitance, where the output signal indicates a temperature of an environment containing the junction diode.Type: ApplicationFiled: July 6, 2020Publication date: October 22, 2020Inventors: Michele Vaiana, Daniele Casella, Giuseppe Bruno
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Patent number: 10809862Abstract: 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.Type: GrantFiled: July 26, 2019Date of Patent: October 20, 2020Assignee: STMicroelectronics S.r.l.Inventors: Calogero Marco Ippolito, Angelo Recchia, Antonio Cicero, Pierpaolo Lombardo, Michele Vaiana
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Patent number: 10794772Abstract: A circuit includes a first input terminal, a second input terminal, a third input terminal and an output terminal. A first summation node adds signals at the first and third input terminals. A second summation node subtracts signals at the second and third input terminals. A selector selects between the added signals and subtracted signals in response to a selection signal. The output of the selector is integrated to generate an integrated signal. The integrated signal is compared by a comparator to a threshold, the comparator generating an output signal at the output terminal having a first level and a second level. Feedback of the output signal produces the selection signal causing the selector to select the added signals in response to the first level of the output signal and causing the selector to select the subtracted signals in response to the second level of the output signal.Type: GrantFiled: April 20, 2018Date of Patent: October 6, 2020Assignee: STMicroelectronics S.r.l.Inventors: Michele Vaiana, Paolo Pesenti, Mario Chiricosta, Calogero Marco Ippolito, Mario Maiore
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Publication number: 20200256898Abstract: 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.Type: ApplicationFiled: February 4, 2020Publication date: August 13, 2020Applicant: STMicroelectronics S.r.l.Inventors: Michele VAIANA, Calogero Marco IPPOLITO, Angelo RECCHIA, Antonio CICERO, Pierpaolo LOMBARDO
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Publication number: 20200259474Abstract: An amplification interface includes a drain of a first FET connected to a first node, a drain of a second FET connected to a second node, and sources of the first and second FETs connected to a third node. First and second bias-current generators are connected to the first and second nodes. A third FET is connected between the third node and a reference voltage. A regulation circuit drives the gate of the third FET to regulate the common mode of the voltage at the first node and the voltage at the second node to a desired value. A current generator applies a correction current to the first and/or second node. A differential current integrator has a first and second inputs connected to the second and first nodes. The integrator supplies a voltage representing the integral of the difference between the currents received at the second and first inputs.Type: ApplicationFiled: February 4, 2020Publication date: August 13, 2020Applicant: STMicroelectronics S.r.l.Inventors: Calogero Marco IPPOLITO, Michele VAIANA, Angelo RECCHIA
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Patent number: 10739212Abstract: A method of sensing a temperature includes providing a voltage to reverse bias a PN junction of a junction diode. The PN junction has a junction capacitance. The method includes providing a reverse bias voltage change across the PN junction and detecting a value of the junction capacitance in response to the reverse bias voltage change. The value of the junction capacitance is a function of a temperature of the PN junction. An output signal is generated based on the detected junction capacitance, where the output signal indicates a temperature of an environment containing the junction diode.Type: GrantFiled: April 25, 2019Date of Patent: August 11, 2020Assignee: STMicroelectronics S.r.l.Inventors: Michele Vaiana, Daniele Casella, Giuseppe Bruno
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Publication number: 20200050305Abstract: 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.Type: ApplicationFiled: July 26, 2019Publication date: February 13, 2020Inventors: Calogero Marco Ippolito, Angelo Recchia, Antonio Cicero, Pierpaolo Lombardo, Michele Vaiana
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Publication number: 20190316973Abstract: A circuit includes a first current source configured to produce a first current in a first current line through a first diode-connected transistor having a voltage drop across the first diode-connected transistor, the first current being proportional to an absolute temperature via a first proportionality factor; a second current source configured to produce a second current in a second current line through a second diode-connected transistor having a voltage drop across the second diode-connected transistor, the second current being proportional to the absolute temperature via a second proportionality factor; a third current source configured to produce a third current in a third current line through a third diode-connected transistor having a voltage drop across the third diode-connected transistor; and a processing network including a sigma-delta analog-to-digital converter, the processing network being coupled to the, the second, and the third diode-connected transistors.Type: ApplicationFiled: March 18, 2019Publication date: October 17, 2019Inventors: Calogero Marco Ippolito, Michele Vaiana
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Publication number: 20190250047Abstract: A method of sensing a temperature includes providing a voltage to reverse bias a PN junction of a junction diode. The PN junction has a junction capacitance. The method includes providing a reverse bias voltage change across the PN junction and detecting a value of the junction capacitance in response to the reverse bias voltage change. The value of the junction capacitance is a function of a temperature of the PN junction. An output signal is generated based on the detected junction capacitance, where the output signal indicates a temperature of an environment containing the junction diode.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Inventors: Michele Vaiana, Daniele Casella, Giuseppe Bruno
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Patent number: 10317293Abstract: A sensing element integrated in a semiconductor material chip has a sensing diode of a junction type configured to be reverse biased so that its junction capacitance is sensitive to the local temperature. A reading stage is coupled to the sensing element for detecting variations of the junction capacitance of the sensing diode and outputting a reading acquisition signal proportional to the local temperature of the sensing diode. The sensing diode has a cathode terminal coupled to a biasing node and an anode terminal coupled to a first input of the reading stage. The biasing node receives a voltage positive with respect to the first input of the reading stage for keeping the sensing diode reverse biased.Type: GrantFiled: December 3, 2015Date of Patent: June 11, 2019Assignee: STMicroelectronics S.r.l.Inventors: Michele Vaiana, Daniele Casella, Giuseppe Bruno
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Publication number: 20180313699Abstract: A circuit includes a first input terminal, a second input terminal, a third input terminal and an output terminal. A first summation node adds signals at the first and third input terminals. A second summation node subtracts signals at the second and third input terminals. A selector selects between the added signals and subtracted signals in response to a selection signal. The output of the selector is integrated to generate an integrated signal. The integrated signal is compared by a comparator to a threshold, the comparator generating an output signal at the output terminal having a first level and a second level. Feedback of the output signal produces the selection signal causing the selector to select the added signals in response to the first level of the output signal and causing the selector to select the subtracted signals in response to the second level of the output signal.Type: ApplicationFiled: April 20, 2018Publication date: November 1, 2018Applicant: STMicroelectronics S.r.l.Inventors: Michele VAIANA, Paolo PESENTI, Mario CHIRICOSTA, Calogero Marco IPPOLITO, Mario MAIORE
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Patent number: 9540229Abstract: A packaged sensor assembly includes: a packaging structure, having at least one opening; a humidity sensor and a pressure sensor, which are housed inside the packaging structure and communicate fluidically with the outside through the opening, and a control circuit, operatively coupled to the humidity sensor and to the pressure sensor; wherein the humidity sensor and the control circuit are integrated in a first chip, and the pressure sensor is integrated in a second chip distinct from the first chip and bonded to the first chip.Type: GrantFiled: December 8, 2015Date of Patent: January 10, 2017Assignee: STMicroelectronics S.r.l.Inventors: Giuseppe Bruno, Sebastiano Conti, Mario Chiricosta, Michele Vaiana, Calogero Marco Ippolito, Mario Maiore, Daniele Casella
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Patent number: 9534974Abstract: A pressure sensor includes a body made of semiconductor material having a first type of conductivity and a pressure-sensitive structure having the first type of conductivity defining a suspended membrane. One or more piezoresistive elements having a second type of conductivity (P) are formed in the suspended membrane. The piezoresistive elements form, with the pressure-sensitive structure, respective junction diodes. A temperature sensing method includes: generating a first current between conduction terminals common to the junction diodes; detecting a first voltage value between the common conduction terminals when the first current is supplied; and correlating the detected first voltage value to a value of temperature of the diodes. The temperature value thus calculated can be used for correcting the voltage signal generated at output by the pressure sensor when the latter is operated for sensing an applied outside pressure which deforms the suspended membrane.Type: GrantFiled: February 1, 2013Date of Patent: January 3, 2017Assignee: STMICROELECTRONICS S.R.L.Inventors: Michele Vaiana, Mario Chiricosta, Mario Maiore, Lorenzo Baldo, Paul Georges Marie Rose
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Patent number: 9518886Abstract: A pressure sensor includes a body made of semiconductor material having a first type of conductivity and a pressure-sensitive structure having the first type of conductivity defining a suspended membrane. One or more piezoresistive elements having a second type of conductivity (P) are formed in the suspended membrane. The piezoresistive elements form, with the pressure-sensitive structure, respective junction diodes. A temperature sensing method includes: generating a first current between conduction terminals common to the junction diodes; detecting a first voltage value between the common conduction terminals when the first current is supplied; and correlating the detected first voltage value to a value of temperature of the diodes. The temperature value thus calculated can be used for correcting the voltage signal generated at output by the pressure sensor when the latter is operated for sensing an applied outside pressure which deforms the suspended membrane.Type: GrantFiled: November 24, 2015Date of Patent: December 13, 2016Assignee: STMicroelectronics S.r.l.Inventors: Lorenzo Baldo, Michele Vaiana, Mario Chiricosta, Mario Maiore, Paul Georges Marie Rose
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Publication number: 20160347606Abstract: A packaged sensor assembly includes: a packaging structure, having at least one opening; a humidity sensor and a pressure sensor, which are housed inside the packaging structure and communicate fluidically with the outside through the opening, and a control circuit, operatively coupled to the humidity sensor and to the pressure sensor; wherein the humidity sensor and the control circuit are integrated in a first chip, and the pressure sensor is integrated in a second chip distinct from the first chip and bonded to the first chip.Type: ApplicationFiled: December 8, 2015Publication date: December 1, 2016Inventors: Giuseppe BRUNO, Sebastiano CONTI, Mario CHIRICOSTA, Michele VAIANA, Calogero Marco IPPOLITO, Mario MAIORE, Daniele CASELLA
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Publication number: 20160290875Abstract: A sensing element integrated in a semiconductor material chip has a sensing diode of a junction type configured to be reverse biased so that its junction capacitance is sensitive to the local temperature. A reading stage is coupled to the sensing element for detecting variations of the junction capacitance of the sensing diode and outputting a reading acquisition signal proportional to the local temperature of the sensing diode. The sensing diode has a cathode terminal coupled to a biasing node and an anode terminal coupled to a first input of the reading stage. The biasing node receives a voltage positive with respect to the first input of the reading stage for keeping the sensing diode reverse biased.Type: ApplicationFiled: December 3, 2015Publication date: October 6, 2016Inventors: Michele Vaiana, Daniele Casella, Giuseppe Bruno
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Publication number: 20160076962Abstract: A pressure sensor includes a body made of semiconductor material having a first type of conductivity and a pressure-sensitive structure having the first type of conductivity defining a suspended membrane. One or more piezoresistive elements having a second type of conductivity (P) are formed in the suspended membrane. The piezoresistive elements form, with the pressure-sensitive structure, respective junction diodes. A temperature sensing method includes: generating a first current between conduction terminals common to the junction diodes; detecting a first voltage value between the common conduction terminals when the first current is supplied; and correlating the detected first voltage value to a value of temperature of the diodes. The temperature value thus calculated can be used for correcting the voltage signal generated at output by the pressure sensor when the latter is operated for sensing an applied outside pressure which deforms the suspended membrane.Type: ApplicationFiled: November 24, 2015Publication date: March 17, 2016Applicant: STMicroelectronics S.r.l.Inventors: Lorenzo Baldo, Michele Vaiana, Mario Chiricosta, Mario Maiore, Paul Georges Marie Rose