Patents by Inventor Bertan Bakkaloglu
Bertan Bakkaloglu 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).
-
Patent number: 11672488Abstract: A wirelessly powered implantable stimulator device includes one or more antenna configured to receive an input signal non-inductively from an external antenna, the input signal containing (i) electrical energy to operate the implantable stimulator device and (ii) configuration data according to which a pulse-density modulation (PDM) encoded stimulus waveform signal is retrieved to synthesize a desired stimulation waveform; a circuit coupled to the one or more antenna; and one or more electrodes coupled to the circuit and configured to apply the desired stimulation waveform to neural tissue, wherein the circuit is configured to: rectify the input signal received at the one or more antennas non-inductively; extract the electrical energy and the configuration data from the input signal; and in accordance with the extracted configuration data, retrieve the pulse-density modulation (PDM) signal to synthesize the desired stimulation waveform therefrom.Type: GrantFiled: April 22, 2020Date of Patent: June 13, 2023Assignee: Stimwave Technologies IncorporatedInventors: Laura Tyler Perryman, Bertan Bakkaloglu, Chad David Andresen
-
Publication number: 20220409903Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: ApplicationFiled: August 29, 2022Publication date: December 29, 2022Inventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Patent number: 11426586Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: GrantFiled: November 5, 2019Date of Patent: August 30, 2022Assignee: Stimwave Technologies IncorporatedInventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Patent number: 11108325Abstract: A method including producing an electronic circuit. The method can include providing a first circuit portion, a second circuit portion, a flying capacitor voltage comparator, an output switching circuit, an electronic circuit first output node, and/or an electronic circuit second output node. The electronic circuit first output node can be electrically coupled to a first gate terminal of a switching converter. The electronic circuit second output node can be electrically coupled to a second gate terminal of the switching converter. The method also can include electrically coupling a voltage sensor output terminal of the flying capacitor voltage comparator to the first circuit second input node of the first circuit portion and the second circuit second input node of the second circuit portion. Other embodiments are disclosed.Type: GrantFiled: February 14, 2020Date of Patent: August 31, 2021Assignee: ARIZONA BOARD OF REGENTS ON BBEHALF OF ARIZONA STATE UNIVERSITYInventors: Parisa Mahmoudidaryan, Sayfe Kiaei, Bertan Bakkaloglu
-
Patent number: 10917009Abstract: An autozeroed comparator controls a frequency fsw of the input voltage inputted to a DC/DC converter. A digital frequency synchronization circuit is connected to the autozeroed comparator so as to form a phase locked loop, wherein the DES circuit controls the hysteretic window of the autozeroed comparator so as to lock fsw to a clock reference frequency. A plurality of slave phase circuits may be connected to the master phase circuit including the DFS circuit and the autozeroed comparator. Duty cycle calibration circuits adjust a duty cycle signal applied to each of the slave phase circuits, in response to average current measured in the slave phase circuits, so that each slave phase circuit is synchronized with the master phase circuit. A 6 A 90.5% peak efficiency 4-phase hysteretic quasi-current-mode buck converter is provided with constant frequency and maximum ±1.5% current mismatch between the slave phases and the master phase.Type: GrantFiled: August 9, 2017Date of Patent: February 9, 2021Assignees: CALIFORNIA INSTITUTE OF TECHNOLOGY, ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITYInventors: Philippe C. Adell, Ming Sun, Bertan Bakkaloglu
-
Publication number: 20200376275Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: ApplicationFiled: November 5, 2019Publication date: December 3, 2020Inventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Publication number: 20200266708Abstract: A method including producing an electronic circuit. The method can include providing a first circuit portion, a second circuit portion, a flying capacitor voltage comparator, an output switching circuit, an electronic circuit first output node, and/or an electronic circuit second output node. The electronic circuit first output node can be electrically coupled to a first gate terminal of a switching converter. The electronic circuit second output node can be electrically coupled to a second gate terminal of the switching converter. The method also can include electrically coupling a voltage sensor output terminal of the flying capacitor voltage comparator to the first circuit second input node of the first circuit portion and the second circuit second input node of the second circuit portion. Other embodiments are disclosed.Type: ApplicationFiled: February 14, 2020Publication date: August 20, 2020Applicant: Arizona Board of Regents on behalf of Arizona State UniversityInventors: Parisa Mahmoudidaryan, Sayfe Kiaei, Bertan Bakkaloglu
-
Patent number: 10646164Abstract: A wirelessly powered implantable stimulator device includes one or more antenna configured to receive an input signal non-inductively from an external antenna, the input signal containing (i) electrical energy to operate the implantable stimulator device and (ii) configuration data according to which a pulse-density modulation (PDM) encoded stimulus waveform signal is retrieved to synthesize a desired stimulation waveform; a circuit coupled to the one or more antenna; and one or more electrodes coupled to the circuit and configured to apply the desired stimulation waveform to neural tissue, wherein the circuit is configured to: rectify the input signal received at the one or more antennas non-inductively; extract the electrical energy and the configuration data from the input signal; and in accordance with the extracted configuration data, retrieve the pulse-density modulation (PDM) signal to synthesize the desired stimulation waveform therefrom.Type: GrantFiled: May 24, 2017Date of Patent: May 12, 2020Assignee: Stimwave Technologies IncorporatedInventors: Laura Tyler Perryman, Bertan Bakkaloglu, Chad David Andresen
-
Patent number: 10493279Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: GrantFiled: December 19, 2016Date of Patent: December 3, 2019Assignee: Stimwave Technologies IncorporatedInventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Publication number: 20180048232Abstract: An autozeroed comparator controls a frequency fsw of the input voltage inputted to a DC/DC converter. A digital frequency synchronization circuit is connected to the autozeroed comparator so as to form a phase locked loop, wherein the DES circuit controls the hysteretic window of the autozeroed comparator so as to lock fsw to a clock reference frequency. A plurality of slave phase circuits may be connected to the master phase circuit including the DFS circuit and the autozeroed comparator. Duty cycle calibration circuits adjust a duty cycle signal applied to each of the slave phase circuits, in response to average current measured in the slave phase circuits, so that each slave phase circuit is synchronized with the master phase circuit. A 6 A 90.5% peak efficiency 4-phase hysteretic quasi-current-mode buck converter is provided with constant frequency and maximum ±1.5% current mismatch between the slave phases and the master phase.Type: ApplicationFiled: August 9, 2017Publication date: February 15, 2018Applicants: California Institute of Technology, Arizona Board of Regents, a body Corporate of the State of Arizona, on behalf of Arizona State UniveInventors: Philippe C. Adell, Ming Sun, Bertan Bakkaloglu
-
Publication number: 20170189683Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: ApplicationFiled: December 19, 2016Publication date: July 6, 2017Inventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Patent number: 9522270Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: GrantFiled: July 10, 2015Date of Patent: December 20, 2016Assignee: Micron Devices, LLCInventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Publication number: 20160008602Abstract: An integrated circuit includes: a radio-frequency (RF) to direct current (DC) rectifying circuit coupled to one or more antenna on an implantable wirelessly powered device, the rectifying circuit configured to: rectify an input RF signal received at the one or more antennas and from an external controller through electric radiative coupling; and extract DC electric power and configuration data from the input RF signal; a logic control circuit connected to the rectifying circuit and a driving circuit, the logic control circuit configured to: generate a current for the driving circuit solely using the extracted DC electrical power; in accordance with the extracted configuration data, set polarity state information for each electrode; and a driving circuit coupled to one or more electrode, the driving circuit comprising current mirrors and being configured to: steer, to each electrode and via the current mirrors, a stimulating current solely from the generated current.Type: ApplicationFiled: July 10, 2015Publication date: January 14, 2016Inventors: Laura Tyler Perryman, Chad David Andresen, Bertan Bakkaloglu
-
Patent number: 9026224Abstract: Techniques, apparatuses, and systems for interfacing multiple sensors with a biological system can include amplifying signals from respective sensors associated with an external device; modulating the amplified signals based on respective different frequency values; and summing the modulated signals to produce an output signal to stimulate a biological system.Type: GrantFiled: April 21, 2010Date of Patent: May 5, 2015Inventors: Ranu Jung, Kenneth Horch, James J. Abbas, Stephen Phillips, Bertan Bakkaloglu, Seung-Jae Kim
-
Patent number: 9024606Abstract: A DC-DC converter for generating a DC output voltage includes: a digitally controlled pulse width modulator (DPWM) for controlling a switching power stage to supply a varying voltage to an inductor; and a digital voltage feedback circuit for controlling the DPWM in accordance with a feedback voltage corresponding to the DC output voltage, the digital voltage feedback circuit including: a first voltage controlled oscillator for converting the feedback voltage into a first frequency signal and to supply the first frequency signal to a first frequency discriminator; a second voltage controlled oscillator for converting a reference voltage into a second frequency signal and to supply the second frequency signal to a second frequency discriminator; a digital comparator for comparing digital outputs of the first and second frequency discriminators and for outputting a digital feedback signal; and a controller for controlling the DPWM in accordance with the digital feedback signal.Type: GrantFiled: December 20, 2011Date of Patent: May 5, 2015Assignees: California Institute of Technology, Arizona State University, Ira A. Fulton Schools of EngineeringInventors: Philippe C. Adell, Bertan Bakkaloglu, Bert Vermeire, Tao Liu
-
Patent number: 8604762Abstract: Low noise, low dropout regulators are described. An example low noise, low dropout regulator includes a chopping error amplifier to receive an input signal and a feedback signal and to output a modified signal having an undesired portion of the input signal shifted to a higher frequency and a regulator to receive the modified signal and to generate an output signal by filtering the undesired portion of the input signal from the modified signal.Type: GrantFiled: May 25, 2007Date of Patent: December 10, 2013Assignee: Texas Instruments IncorporatedInventors: Bertan Bakkaloglu, Bhaskar Aravind, Siew K. Hoon
-
Patent number: 8436620Abstract: Systems and methods are provided for monitoring a voltage. A level shifter is configured to generate a current proportional to the voltage of the battery cell. A delta-sigma modulator is configured to convert the current into a first density modulated bitstream representing the voltage of the battery cell. A first reference source is configured to provide a second density modulated bitstream representing a first threshold voltage. A first comparator is configured to compare the first density modulated bitstream and the second density modulated bitstream.Type: GrantFiled: September 2, 2010Date of Patent: May 7, 2013Assignee: Texas Instruments IncorporatedInventors: Gary Lee Stirk, Brian Allen, Umar Jameer Lyles, John Houldsworth, Brian Lum-Shue-Chan, Bertan Bakkaloglu
-
Patent number: 8378868Abstract: Systems and methods for analog to digital conversion charge storage device measurement are presented. In multi-cell charge storage device monitoring systems, accurate measurement of cell voltages is used for protection of the multi-cell device. The disclosed cell referenced solution converts the cell voltage to a digital representation referenced at the cell voltage. The digital representation referenced to the cell voltage is then level shifted to a ground referenced signal suitable for digital post processing. This processing may be used for fault detection of over-voltage, under-voltage, open cell, and similar fault conditions and cell capacity measurements. An example embodiment implements a sigma delta modulator to perform the signal transformation from analog to digital. The disclosed systems and methods may be differential and stackable for multiple cells.Type: GrantFiled: November 4, 2010Date of Patent: February 19, 2013Assignee: Texas Instruments IncorporatedInventors: Umar Jameer Lyles, Bertan Bakkaloglu, Brian P. Lum-Shue-Chan
-
Publication number: 20120153917Abstract: A DC-DC converter for generating a DC output voltage includes: a digitally controlled pulse width modulator (DPWM) for controlling a switching power stage to supply a varying voltage to an inductor; and a digital voltage feedback circuit for controlling the DPWM in accordance with a feedback voltage corresponding to the DC output voltage, the digital voltage feedback circuit including: a first voltage controlled oscillator for converting the feedback voltage into a first frequency signal and to supply the first frequency signal to a first frequency discriminator; a second voltage controlled oscillator for converting a reference voltage into a second frequency signal and to supply the second frequency signal to a second frequency discriminator; a digital comparator for comparing digital outputs of the first and second frequency discriminators and for outputting a digital feedback signal; and a controller for controlling the DPWM in accordance with the digital feedback signal.Type: ApplicationFiled: December 20, 2011Publication date: June 21, 2012Inventors: Philippe C. Adell, Bertan Bakkaloglu, Bert Vermeire, Tao Liu
-
Publication number: 20120112941Abstract: Systems and methods for analog to digital conversion charge storage device measurement are presented. In multi-cell charge storage device monitoring systems, accurate measurement of cell voltages is used for protection of the multi-cell device. The disclosed cell referenced solution converts the cell voltage to a digital representation referenced at the cell voltage. The digital representation referenced to the cell voltage is then level shifted to a ground referenced signal suitable for digital post processing. This processing may be used for fault detection of over-voltage, under-voltage, open cell, and similar fault conditions and cell capacity measurements. An example embodiment implements a sigma delta modulator to perform the signal transformation from analog to digital. The disclosed systems and methods may be differential and stackable for multiple cells.Type: ApplicationFiled: November 4, 2010Publication date: May 10, 2012Applicant: Texas Instruments IncorporatedInventors: Umar Jameer Lyles, Bertan Bakkaloglu, Brian P. Lum-Shue-Chan