Patents by Inventor Rahul Sarpeshkar
Rahul Sarpeshkar 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: 10769338Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) a real capacitor, whose value exactly emulates the value of the quantum constant ? termed a Planck capacitor; 2) a ‘quantum admittance’ element, which has no classical equivalent, but which can be emulated by approximately 18 transistors of a coupled transconductor system; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple quantum admittances to each other under the control of an input. These four parts can be composed together to create arbitrary discrete-state, traveling-wave, spectral, or other quantum systems.Type: GrantFiled: November 29, 2017Date of Patent: September 8, 2020Assignee: THE TRUSTEES OF DARTMOUTH COLLEGEInventor: Rahul Sarpeshkar
-
Patent number: 10434313Abstract: We disclose multi-electrode, energy-recycling, resonant stimulation circuits and strategies for energy-efficient blocking of action potentials in nerve. Our schemes increase the probability that most of the electrical stimulation is directed through the nerve rather than dissipated in ohmic extracellular solution alongside it via mechanical and electrical means; they use energy-recycling and resonant-amplification strategies that recycle and amplify capacitive nerve energy such that the nerve itself becomes an integral part of the circuit creating its oscillatory blocking waveform; they use traveling-wave strategies with distributed multi-electrode stimulation that alters the timing and intensity of stimulation at various points along the nerve to synchronize blocking stimulation with wave propagation in the nerve in an energy-efficient fashion.Type: GrantFiled: November 28, 2015Date of Patent: October 8, 2019Assignee: Rahnix, Inc.Inventors: Rahul Sarpeshkar, Woradorn Wattanapanitch
-
Patent number: 10297835Abstract: A glucose fuel cell for reception into a given constrained volume of implantation in a vertebrate in which the glucose fuel cell has access to fluid containing glucose. The fuel cell includes an anode adapted to oxidize the glucose, a cathode adapted to reduce an oxidant, and a membrane disposed between the anode and the cathode and separating the anode from the cathode. At least one of the anode or cathode define a flexible sheet that is geometrically deformed to be receivable into the given constrained volume of implantation and increase volumetric power density. Related methods of making a glucose fuel cell of this type and implantable assemblies including the glucose fuel cell are also disclosed.Type: GrantFiled: May 15, 2014Date of Patent: May 21, 2019Assignee: Massachusetts Institute of TechnologyInventors: Rahul Sarpeshkar, Jeremy Bert Muldavin, Todd Addison Thorsen, Jakub Kedzierski, Benjamin Isaac Rapoport, Michale Sean Fee
-
Patent number: 10275556Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) a real capacitor, whose value exactly emulates the value of the quantum constant ? termed a Planck capacitor; 2) a ‘quantum admittance’ element, which has no classical equivalent, but which can be emulated by approximately 18 transistors of a coupled transconductor system; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple quantum admittances to each other under the control of an input. We describe how these parts may be composed together to emulate arbitrary two-state and discrete-state quantum or quantum-inspired systems including stochastics, state preparation, probability computations, state amplification, state attenuation, control, dynamics, and loss compensation.Type: GrantFiled: November 29, 2017Date of Patent: April 30, 2019Assignee: The Trustees of Dartmouth CollegeInventor: Rahul Sarpeshkar
-
Patent number: 10248748Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) capacitors that represent ? termed Planck capacitors; 2) a ‘quantum admittance’ element, which can be emulated efficiently via coupled transconductors; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple emulated quantum admittances to each other under the control of an input. We describe a ‘Quantum Cochlea’, a biologically-inspired quantum traveling-wave system with coupled emulated quantum two-state systems for efficient spectrum analysis that uses all of these parts.Type: GrantFiled: November 2, 2018Date of Patent: April 2, 2019Assignee: The Trustees of Dartmouth CollegeInventor: Rahul Sarpeshkar
-
Publication number: 20190073439Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) capacitors that represent ? termed Planck capacitors; 2) a ‘quantum admittance’ element, which can be emulated efficiently via coupled transconductors; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple emulated quantum admittances to each other under the control of an input. We describe a ‘Quantum Cochlea’, a biologically-inspired quantum traveling-wave system with coupled emulated quantum two-state systems for efficient spectrum analysis that uses all of these parts.Type: ApplicationFiled: November 2, 2018Publication date: March 7, 2019Inventor: Rahul SARPESHKAR
-
Patent number: 10204199Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) capacitors that represent ? termed Planck capacitors; 2) a ‘quantum admittance’ element, which can be emulated efficiently via coupled transconductors; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple emulated quantum admittances to each other under the control of an input. We describe a ‘Quantum Cochlea’, a biologically-inspired quantum traveling-wave system with coupled emulated quantum two-state systems for efficient spectrum analysis that uses all of these parts.Type: GrantFiled: November 29, 2017Date of Patent: February 12, 2019Assignee: The Trustees of Dartmouth CollegeInventor: Rahul Sarpeshkar
-
Publication number: 20180150760Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) a real capacitor, whose value exactly emulates the value of the quantum constant h termed a Planck capacitor; 2) a ‘quantum admittance’ element, which has no classical equivalent, but which can be emulated by approximately 18 transistors of a coupled transconductor system; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple quantum admittances to each other under the control of an input. We describe how these parts may be composed together to emulate arbitrary two-state and discrete-state quantum or quantum-inspired systems including stochastics, state preparation, probability computations, state amplification, state attenuation, control, dynamics, and loss compensation.Type: ApplicationFiled: November 29, 2017Publication date: May 31, 2018Inventor: Rahul SARPESHKAR
-
Publication number: 20180150761Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) capacitors that represent ? termed Planck capacitors; 2) a ‘quantum admittance’ element, which can be emulated efficiently via coupled transconductors; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple emulated quantum admittances to each other under the control of an input. We describe a ‘Quantum Cochlea’, a biologically-inspired quantum traveling-wave system with coupled emulated quantum two-state systems for efficient spectrum analysis that uses all of these parts.Type: ApplicationFiled: November 29, 2017Publication date: May 31, 2018Inventor: Rahul SARPESHKAR
-
Publication number: 20180150579Abstract: We disclose transconductor-capacitor classical dynamical systems that emulate quantum dynamical systems and quantum-inspired systems by composing them with 1) a real capacitor, whose value exactly emulates the value of the quantum constant h termed a Planck capacitor; 2) a ‘quantum admittance’ element, which has no classical equivalent, but which can be emulated by approximately 18 transistors of a coupled transconductor system; 3) an emulated ‘quantum transadmittance element’ that can couple emulated quantum admittances to each other; and 4) an emulated ‘quantum transadmittance mixer element’ that can couple quantum admittances to each other under the control of an input. These four parts can be composed together to create arbitrary discrete-state, traveling-wave, spectral, or other quantum systems.Type: ApplicationFiled: November 29, 2017Publication date: May 31, 2018Inventor: Rahul SARPESHKAR
-
Publication number: 20170143969Abstract: We disclose multi-electrode, energy-recycling, resonant stimulation circuits and strategies for energy-efficient blocking of action potentials in nerve. Our schemes increase the probability that most of the electrical stimulation is directed through the nerve rather than dissipated in ohmic extracellular solution alongside it via mechanical and electrical means; they use energy-recycling and resonant-amplification strategies that recycle and amplify capacitive nerve energy such that the nerve itself becomes an integral part of the circuit creating its oscillatory blocking waveform; they use traveling-wave strategies with distributed multi-electrode stimulation that alters the timing and intensity of stimulation at various points along the nerve to synchronize blocking stimulation with wave propagation in the nerve in an energy-efficient fashion.Type: ApplicationFiled: November 28, 2015Publication date: May 25, 2017Applicant: Rahnix, Inc.Inventors: Rahul Sarpeshkar, Woradorn Wattanapanitch
-
Patent number: 9083199Abstract: Described is a battery charger circuit for charging a battery. The battery charger circuit comprises a control element having a first input configured to receive an input from a reference source, a second input configured to receive an input from the battery and an output, said control element having an output current response characteristic which varies with respect to the battery input such that said control element implements a saturating function that causes the charging current of the battery to automatically transition between a constant current operating mode and a constant voltage operating mode or a constant voltage operating mode to a constant current operating mode.Type: GrantFiled: May 10, 2011Date of Patent: July 14, 2015Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Bruno Guimaraes Do Valle, Christian T. Wentz, Rahul Sarpeshkar
-
Publication number: 20150087055Abstract: Provided herein are molecular analog gene circuits that exploit positive and negative feedback to implement logarithmically linear sensing, addition, subtraction, and scaling thus enabling multiplicative, ratiometric, and power-law computations. The circuits exhibit Weber's Law behavior as in natural biological systems, operate over a wide dynamic range of up to four orders of magnitude, and can be architected to have tunable transfer functions. The molecular circuits described herein can be composed together to implement higher-order functions that are well-described by both intricate biochemical models and by simple mathematical functions. The molecular circuits described herein enable logarithmically linear analog computation within in-vitro and in-vivo systems with a broad class of molecules, all of which obey the Boltzmann exponential equations of thermodynamics that govern molecular association, attenuation, transformation, and degradation.Type: ApplicationFiled: April 12, 2013Publication date: March 26, 2015Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Rahul Sarpeshkar, Timothy Kuan-Ta Lu, Ramez Danial, Jacob Rosenblum Rubens
-
Publication number: 20140342247Abstract: A glucose fuel cell for reception into a given constrained volume of implantation in a vertebrate in which the glucose fuel cell has access to fluid containing glucose. The fuel cell includes an anode adapted to oxidize the glucose, a cathode adapted to reduce an oxidant, and a membrane disposed between the anode and the cathode and separating the anode from the cathode. At least one of the anode or cathode define a flexible sheet that is geometrically deformed to be receivable into the given constrained volume of implantation and increase volumetric power density. Related methods of making a glucose fuel cell of this type and implantable assemblies including the glucose fuel cell are also disclosed.Type: ApplicationFiled: May 15, 2014Publication date: November 20, 2014Inventors: Rahul Sarpeshkar, Jeremy Bert Muldavin, Todd Addison Thorsen, Jakub Kedzierski, Benjamin Isaac Rapoport, Michale Sean Fee
-
Patent number: 8708923Abstract: A wearable system for monitoring a plurality of physiological signals is provided. The wearable system includes at least one sensor producing the physiological signals associated with a patient. A processor unit receives the physiological signals from the at least one sensor. The processor unit analyzes the physiological signals to determine the occurrence of a triggered event and produces at least one output signal identifying the triggered event. A transmission unit receives the at least one output signal and prepares for transmission of the at least one output signal.Type: GrantFiled: February 4, 2010Date of Patent: April 29, 2014Assignee: Massachusetts Institute of TechnologyInventors: Lorenzo Turicchia, Soumyajit Mandal, Rahul Sarpeshkar
-
Patent number: 8700144Abstract: A system and method for stimulating an electrode is provided. The stimulator includes a sensor circuit configured to couple to the at least one electrode of a medical device to measure a power characteristic of the at least one electrode. The stimulator includes a control circuit configured to compare the measured power characteristic of the at least one electrode to a desired power characteristic, and, based upon a comparison of the measured power characteristic of the at least one electrode and the desired power characteristic, select between a first operational mode and a second operational mode of the electrode stimulator. The first operational mode includes delivering energy to the at least one electrode to stimulate the tissue and the second operational mode includes recovering energy from the at least one electrode.Type: GrantFiled: April 28, 2011Date of Patent: April 15, 2014Assignee: Massachusetts Institute of TechnologyInventors: Scott K Arfin, Rahul Sarpeshkar
-
Patent number: 8700166Abstract: A visual prostheses codes visual signals into electrical stimulation patterns for the creation of artificial vision. In some examples, coding of the information uses image compression techniques, temporal coding strategies, continuous interleaved sampling (CIS), and/or radar or sonar data. Examples of the approach are not limited to processing visual signals but can also be used to processing signals at other frequency ranges (e.g., infrared, radio frequency, and ultrasound), for instance, creating an augmented visual sensation.Type: GrantFiled: August 7, 2009Date of Patent: April 15, 2014Assignee: Massachusetts Institute of TechnologyInventors: Rahul Sarpeshkar, Lorenzo Turicchia, Soumyajit Mandal
-
Patent number: 8688438Abstract: A speech processing system includes a plurality of signal analyzers that extract salient signal attributes of an input voice signal. A difference module computes the differences in the salient signal attributes. One or more control modules control a plurality of speech generators using an output signal from the difference module in a speech-locked loop (SLL), the speech generators use the output signal to generate a voice signal.Type: GrantFiled: February 9, 2010Date of Patent: April 1, 2014Assignee: Massachusetts Institute of TechnologyInventors: Keng Hoong Wee, Lorenzo Turicchia, Rahul Sarpeshkar
-
Patent number: 8498366Abstract: A system and technique for providing to flexible, programmable frequency estimators and spectrum analyzers that can operate over extremely large bandwidths and yet provide high spectral resolution are described. The system and technique may include a cascaded super-heterodyne apparatus for estimating a frequency and a bandwidth of signals proximate in frequency to a desired signal, a tunable filter coupled to an input of a receiver, and a tuner which receives a signal from said cascaded super-heterodyne apparatus and tunes the filter to filter out unwanted signals from the receiver.Type: GrantFiled: January 18, 2012Date of Patent: July 30, 2013Assignee: Massachusetts Institute of TechnologyInventors: Soumyajit Mandal, Serhii M. Zhak, Rahul Sarpeshkar
-
Patent number: 8487699Abstract: Described is an inductive compensating network coupled between the differential inputs of an operational amplifier circuit. The inductive compensating network includes at least one inductive element having an inductance value selected so as to provide proper compensation of the operational amplifier circuit. Also described is a feedback compensation scheme which adjusts loop characteristics by introducing zeros into a system with the addition of inductive or capacitive elements in a feedback path.Type: GrantFiled: July 22, 2011Date of Patent: July 16, 2013Assignee: Massachusetts Institute of TechnologyInventors: Douglas Jay Kozak Adams, Rahul Sarpeshkar