Patents by Inventor Miroslav Oljaca
Miroslav Oljaca 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: 20240128901Abstract: Methods, circuits and computer program products are presented herein. The method includes isolating a ripple waveform from a current signal originating from a brushed direct current motor (BDCM). The method includes determining the wave count of the ripple waveform. The method includes determining a position of a movable structure operably coupled to a shaft of the BDCM according to the wave count of the ripple waveform. The present technology may be practiced without discrete capacitor components in high pass filtering aspects of the disclosed circuit. The methods, circuits and computer program products can be implemented to accurately determine a rotational position of a shaft of a BDCM and also position(s) of mechanism(s) coupled to the shaft without requiring any external sensors or other components for this purpose other than the disclosed circuits.Type: ApplicationFiled: October 13, 2022Publication date: April 18, 2024Inventors: Miroslav Oljaca, David Stout, Dennis P. Lehman, Jan Morten Braathen, Merril Newman
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Patent number: 11775120Abstract: A human machine interface (HMI) system and method of operating. The system includes capacitive measurement circuitry coupled to one or more capacitive touch elements, and piezoelectric measurement circuit including interface circuitry coupled to one or more piezoelectric touch elements. The capacitive measurement circuitry includes a gain stage configured to amplify a signal corresponding to a capacitance at the one or more capacitor input terminals by a gain level for communication to processing circuitry. Gain control circuitry is configured to increase the gain level of the gain stage of the capacitive measurement circuitry responsive to the piezoelectric measurement circuitry receiving a user input from at least one of the piezoelectric touch elements. Implementations that further include piezoelectric drive circuitry for haptic output and clearing debris from the keypad are also disclosed.Type: GrantFiled: October 20, 2021Date of Patent: October 3, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jan Morten Braathen, Dennis Patrick Lehman, Miroslav Oljaca, Maxwell G Robertson, Merril Newman
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Patent number: 11611343Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: GrantFiled: January 27, 2022Date of Patent: March 21, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan, Miroslav Oljaca
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Publication number: 20220364925Abstract: A device for occupancy detection of a space includes a passive infrared (PIR) sensor having a fixed field of view; an infrared reflector positioned proximate to the PIR sensor for re-directing infrared radiation received from within the space toward the PIR sensor; an electromechanical device coupled to the infrared reflector and operative to alter a pointing angle thereof in response to a control signal; and, detection and control circuitry (or a microcontroller), coupled to the PIR sensor and the electromechanical device, operative to receive a signal from the PIR sensor indicative of motion of a person within the space, and further operative to selectively alter the pointing angle of the infrared reflector, using the electromechanical device, whereby the relative position of the person is shifted within the fixed field of view of the PIR sensor, thereby simulating motion of the person even when stationary.Type: ApplicationFiled: March 7, 2022Publication date: November 17, 2022Inventors: Maxwell G. Robertson, Miroslav Oljaca
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Publication number: 20220236816Abstract: A human machine interface (HMI) system and method of operating. The system includes capacitive measurement circuitry coupled to one or more capacitive touch elements, and piezoelectric measurement circuit including interface circuitry coupled to one or more piezoelectric touch elements. The capacitive measurement circuitry includes a gain stage configured to amplify a signal corresponding to a capacitance at the one or more capacitor input terminals by a gain level for communication to processing circuitry. Gain control circuitry is configured to increase the gain level of the gain stage of the capacitive measurement circuitry responsive to the piezoelectric measurement circuitry receiving a user input from at least one of the piezoelectric touch elements. Implementations that further include piezoelectric drive circuitry for haptic output and clearing debris from the keypad are also disclosed.Type: ApplicationFiled: October 20, 2021Publication date: July 28, 2022Inventors: Jan Morten Braathen, Dennis Patrick Lehman, Miroslav Oljaca, Maxwell G Robertson, Merril Newman
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Patent number: 11337284Abstract: A circuit includes a capacitor-drop power supply including a series combination of a resistor and a first capacitor. The capacitor-drop power supply includes an output and is adapted to be coupled to a light source. The circuit also includes a second capacitor, a switch, and an active clamp circuit. The second capacitor couples to the output of the capacitor-drop power supply. The switch couples in parallel with the series combination of the resistor and the first capacitor. The switch is configured to cause the light source to illuminate. The active clamp circuit couples to the capacitor-drop power supply. The active clamp circuit has an output coupled to the capacitor-drop power supply. The active clamp circuit is configured to cause current to continuously flow through at least one of the switch or the series combination of resistor and first capacitor regardless of a magnitude of the voltage across the second capacitor.Type: GrantFiled: April 30, 2021Date of Patent: May 17, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Miroslav Oljaca, Gustavo Alonso Martinez, Yogesh Ramadass
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Publication number: 20220149838Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: ApplicationFiled: January 27, 2022Publication date: May 12, 2022Inventors: Navaneeth Kumar NARAYANASAMY, Manu BALAKRISHNAN, Miroslav OLJACA
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Patent number: 11303108Abstract: One example includes a relay device that is comprised of a galvanic isolation barrier, a protection control and power extractor, and an electronic switch. The galvanic isolation barrier is coupled to an input of the relay device and receives a switch control signal and outputs another switch control signal. The protection control and power extractor is coupled to an output of the galvanic isolation barrier. The protection control and power extractor extracts power from a power supply coupled to the relay device. The protection control and power extractor is responsive to the other switch control signal and generates a protection signal in response to a determination of an operating parameter of the relay device. The protection control and power extractor further outputs an electronic switch device signal based on the generated protection signal.Type: GrantFiled: May 5, 2020Date of Patent: April 12, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Barry J. Male, Miroslav Oljaca, David W. Stout, Ajinder Singh
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Patent number: 11271562Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: GrantFiled: October 16, 2020Date of Patent: March 8, 2022Assignee: Texas Instmments IncorporatedInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan, Miroslav Oljaca
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Publication number: 20210345464Abstract: A circuit includes a capacitor-drop power supply including a series combination of a resistor and a first capacitor. The capacitor-drop power supply includes an output and is adapted to be coupled to a light source. The circuit also includes a second capacitor, a switch, and an active clamp circuit. The second capacitor couples to the output of the capacitor-drop power supply. The switch couples in parallel with the series combination of the resistor and the first capacitor. The switch is configured to cause the light source to illuminate. The active clamp circuit couples to the capacitor-drop power supply. The active clamp circuit has an output coupled to the capacitor-drop power supply. The active clamp circuit is configured to cause current to continuously flow through at least one of the switch or the series combination of resistor and first capacitor regardless of a magnitude of the voltage across the second capacitor.Type: ApplicationFiled: April 30, 2021Publication date: November 4, 2021Inventors: Miroslav OLJACA, Gustavo Alonso MARTINEZ, Yogesh RAMADASS
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Publication number: 20210119629Abstract: A solid-state relay circuit includes an isolator circuit, a first output terminal, a second output terminal, and an output switch. The output switch is coupled to the isolator circuit, and includes a first transistor, a second transistor, and a diode. The first transistor is coupled to the first output terminal. The second transistor is coupled to the first transistor and the second output terminal. The diode is coupled to the first transistor, the second transistor, and ground, and is configured to block current flow from ground to the first transistor and the second transistor. The isolator circuit is coupled to the output switch and is configured to activate the first transistor and the second transistor.Type: ApplicationFiled: October 16, 2020Publication date: April 22, 2021Inventors: Navaneeth Kumar NARAYANASAMY, Manu BALAKRISHNAN, Miroslav OLJACA
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Publication number: 20200335963Abstract: One example includes a relay device that is comprised of a galvanic isolation barrier, a protection control and power extractor, and an electronic switch. The galvanic isolation barrier is coupled to an input of the relay device and receives a switch control signal and outputs another switch control signal. The protection control and power extractor is coupled to an output of the galvanic isolation barrier. The protection control and power extractor extracts power from a power supply coupled to the relay device. The protection control and power extractor is responsive to the other switch control signal and generates a protection signal in response to a determination of an operating parameter of the relay device. The protection control and power extractor further outputs an electronic switch device signal based on the generated protection signal.Type: ApplicationFiled: May 5, 2020Publication date: October 22, 2020Inventors: Barry J. Male, MIROSLAV OLJACA, DAVID W. STOUT, AJINDER SINGH
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Patent number: 10790757Abstract: In some examples, a system comprises a control subsystem comprising a static power supply, a modulated power supply, and a comparator. The system also includes a galvanic isolation device coupled to the static power supply, the modulated power supply, and the comparator. The system further includes a parameter measurement subsystem comprising a parameter measurement device coupled to a capacitor to be charged by the static and modulated power supplies via the galvanic isolation device. The capacitor has an electrical connection to the galvanic isolation device modulated in accordance with a current pulse train output by the parameter measurement device, the current pulse train indicating a parameter measured by the parameter measurement device. The comparator is to produce a signal indicative of the modulated electrical connection between the capacitor and the galvanic isolation device.Type: GrantFiled: December 8, 2017Date of Patent: September 29, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Miroslav Oljaca, Ajinder Singh, Sharad Yadav
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Patent number: 10644495Abstract: One example includes a relay device that is comprised of a galvanic isolation barrier, a protection control and power extractor, and an electronic switch. The galvanic isolation barrier is coupled to an input of the relay device and receives a switch control signal and outputs another switch control signal. The protection control and power extractor is coupled to an output of the galvanic isolation barrier. The protection control and power extractor extracts power from a power supply coupled to the relay device. The protection control and power extractor is responsive to the other switch control signal and generates a protection signal in response to a determination of an operating parameter of the relay device. The protection control and power extractor further outputs an electronic switch device signal based on the generated protection signal.Type: GrantFiled: August 29, 2017Date of Patent: May 5, 2020Assignee: Texas Instruments IncorporatedInventors: Barry J. Male, Miroslav Oljaca, David W. Stout, Ajinder Singh
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Publication number: 20190181769Abstract: In some examples, a system comprises a control subsystem comprising a static power supply, a modulated power supply, and a comparator. The system also includes a galvanic isolation device coupled to the static power supply, the modulated power supply, and the comparator. The system further includes a parameter measurement subsystem comprising a parameter measurement device coupled to a capacitor to be charged by the static and modulated power supplies via the galvanic isolation device. The capacitor has an electrical connection to the galvanic isolation device modulated in accordance with a current pulse train output by the parameter measurement device, the current pulse train indicating a parameter measured by the parameter measurement device. The comparator is to produce a signal indicative of the modulated electrical connection between the capacitor and the galvanic isolation device.Type: ApplicationFiled: December 8, 2017Publication date: June 13, 2019Inventors: Miroslav OLJACA, Ajinder SINGH, Sharad YADAV
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Publication number: 20190067930Abstract: One example includes a relay device that is comprised of a galvanic isolation barrier, a protection control and power extractor, and an electronic switch. The galvanic isolation barrier is coupled to an input of the relay device and receives a switch control signal and outputs another switch control signal. The protection control and power extractor is coupled to an output of the galvanic isolation barrier. The protection control and power extractor extracts power from a power supply coupled to the relay device. The protection control and power extractor is responsive to the other switch control signal and generates a protection signal in response to a determination of an operating parameter of the relay device. The protection control and power extractor further outputs an electronic switch device signal based on the generated protection signal.Type: ApplicationFiled: August 29, 2017Publication date: February 28, 2019Inventors: Barry J. Male, MIROSLAV OLJACA, DAVID W. STOUT, AJINDER SINGH
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Patent number: 9954422Abstract: An integrated gate driver for motor control includes a first diode coupled to an upper rail and providing a voltage on a first connector and a power amplifier coupled between the first connector and a second connector that can be coupled to a source of a high-side power transistor. The power amplifier receives a control signal and provides an output signal to a second pin for driving a gate of the high-side power transistor. A first integrated capacitor is coupled between the first and second connector and an integrated charge pump is coupled to supply a current to the first connector. The charge pump includes a second integrated capacitor having a terminal coupled to a high frequency oscillator and a terminal coupled through a second diode to the first connector and a third diode coupled between the second connector and a point between the second capacitor and the second diode.Type: GrantFiled: November 18, 2016Date of Patent: April 24, 2018Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Miroslav Oljaca, Ajinder Singh, Sanjay Pithadia
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Publication number: 20170288511Abstract: An integrated gate driver for motor control includes a first diode coupled to an upper rail and providing a voltage on a first connector and a power amplifier coupled between the first connector and a second connector that can be coupled to a source of a high-side power transistor. The power amplifier receives a control signal and provides an output signal to a second pin for driving a gate of the high-side power transistor. A first integrated capacitor is coupled between the first and second connector and an integrated charge pump is coupled to supply a current to the first connector. The charge pump includes a second integrated capacitor having a terminal coupled to a high frequency oscillator and a terminal coupled through a second diode to the first connector and a third diode coupled between the second connector and a point between the second capacitor and the second diode.Type: ApplicationFiled: November 18, 2016Publication date: October 5, 2017Inventors: Miroslav Oljaca, Ajinder Singh, Sanjay Pithadia
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Patent number: 9152270Abstract: The present disclosure discloses methods and systems for improving touch detection of a touch screen device. The method includes determining touch coordinates when the touch screen device is touched. Subsequently, a sampling time is adjusted, depending on the touch coordinates relative to initial coordinates of the touch screen device.Type: GrantFiled: January 20, 2012Date of Patent: October 6, 2015Assignee: STANDARD MICROSYSTEMS CORPORATIONInventors: Miroslav Oljaca, Srinivas K. Pulijala
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Patent number: 9122813Abstract: System and method for a USB host to determine whether or not a USB device provides power via a USB coupling between the USB host and the USB device. At a first time, it may be determined that the USB device is coupled to the USB host via a USB coupling and does not provide power. Power may be provided to the USB device via the USB coupling. At a second time it may be determined that the USB device does provide power via the USB coupling. Power may no longer be provided to the USB device via the USB coupling after it is determined that the USB device does provide power via the USB coupling. A battery of the USB host may be charged using power provided by the USB device via the USB coupling based on determining that the USB device does provide power via the USB coupling.Type: GrantFiled: March 6, 2012Date of Patent: September 1, 2015Assignee: SMSC HOLDINGS S.A.R.L.Inventors: Miroslav Oljaca, Timothy J. Knowlton, Xiaoliang Xia