Patents by Inventor Michael S. Johnson
Michael S. Johnson 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: 20240267005Abstract: A transmitter including a frequency synthesizer with a voltage-controlled oscillator that provides an oscillating signal, a programmable delay circuit that delays the oscillating signal to provide a delayed oscillating signal, a power amplifier that is configured to amplify the delayed oscillating signal for transmission sufficient to produce interference, and a delay controller that programs the delay circuit with a delay time that reduces interference caused by coupling from the power amplifier to the voltage-controlled oscillator. The delay circuit may be programmed to reduce control voltage change of the voltage-controlled oscillator as a function of delay change, and/or to reduce phase noise degradation at an output of the transmitter as a function of delay change. The delay may be adjusted based on detected operating temperature. A calibration value may be determined at a calibration frequency, in which a frequency offset may be determined based on a selected channel frequency.Type: ApplicationFiled: April 18, 2024Publication date: August 8, 2024Inventors: Rangakrishnan Srinivasan, Mustafa H. Koroglu, Zhongda Wang, Francesco Barale, Abdulkerim L. Coban, John M. Khoury, Sriharsha Vasadi, Michael S. Johnson, Vitor Pereira
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Patent number: 12028024Abstract: A transmitter including a frequency synthesizer with a voltage-controlled oscillator that provides an oscillating signal, a programmable delay circuit that delays the oscillating signal to provide a delayed oscillating signal, a power amplifier that is configured to use the delayed oscillating signal for transmitting a signal, and a delay controller that programs the delay circuit with a delay time that reduces interference caused by coupling from the power amplifier to the voltage-controlled oscillator. The delay circuit may be programmed to reduce control voltage change of the voltage-controlled oscillator as a function of delay change, and/or to reduce phase noise degradation at an output of the transmitter as a function of delay change. The delay may be adjusted based on detected operating temperature. A calibration value may be determined at a calibration frequency, in which a frequency offset may be determined based on a selected channel frequency.Type: GrantFiled: December 6, 2019Date of Patent: July 2, 2024Assignee: Silicon Laboratories Inc.Inventors: Rangakrishnan Srinivasan, Mustafa H. Koroglu, Zhongda Wang, Francesco Barale, Abdulkerim L Coban, John M. Khoury, Sriharsha Vasadi, Michael S. Johnson, Vitor Pereira
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Patent number: 12009793Abstract: In one embodiment, a dual-mode power amplifier that can operate in different modes includes: a first pair of metal oxide semiconductor field effect transistors (MOSFETs) to receive and pass a constant envelope signal; a second pair of MOSFETs to receive and pass a variable envelope signal, where first terminals of the first pair of MOSFETs are coupled to first terminals of the second pair of MOSFETs, and second terminals of the first pair of MOSFETs are coupled to. second terminals of the second pair of MOSFETs; and a shared MOSFET stack coupled to the first pair of MOSFETs and the second pair of MOSFETs.Type: GrantFiled: February 28, 2023Date of Patent: June 11, 2024Assignee: Silicon Laboratories Inc.Inventors: Ruifeng Sun, Sherry Wu, Michael S. Johnson, Vitor Pereira
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Publication number: 20230208368Abstract: In one embodiment, a dual-mode power amplifier that can operate in different modes includes: a first pair of metal oxide semiconductor field effect transistors (MOSFETs) to receive and pass a constant envelope signal; a second pair of MOSFETs to receive and pass a variable envelope signal, where first terminals of the first pair of MOSFETs are coupled to first terminals of the second pair of MOSFETs, and second terminals of the first pair of MOSFETs are coupled to. second terminals of the second pair of MOSFETs; and a shared MOSFET stack coupled to the first pair of MOSFETs and the second pair of MOSFETs.Type: ApplicationFiled: February 28, 2023Publication date: June 29, 2023Inventors: Ruifeng Sun, Sherry Wu, Michael S. Johnson, Vitor Pereira
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Patent number: 11646705Abstract: In one embodiment, a dual-mode power amplifier that can operate in different modes includes: a first pair of metal oxide semiconductor field effect transistors (MOSFETs) to receive and pass a constant envelope signal; a second pair of MOSFETs to receive and pass a variable envelope signal, where first terminals of the first pair of MOSFETs are coupled to first terminals of the second pair of MOSFETs, and second terminals of the first pair of MOSFETs are coupled to. second terminals of the second pair of MOSFETs; and a shared MOSFET stack coupled to the first pair of MOSFETs and the second pair of MOSFETs.Type: GrantFiled: June 30, 2021Date of Patent: May 9, 2023Assignee: Silicon Laboratories Inc.Inventors: Ruifeng Sun, Sherry Wu, Michael S. Johnson, Vitor Pereira
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Publication number: 20230006621Abstract: In one embodiment, a dual-mode power amplifier that can operate in different modes includes: a first pair of metal oxide semiconductor field effect transistors (MOSFETs) to receive and pass a constant envelope signal; a second pair of MOSFETs to receive and pass a variable envelope signal, where first terminals of the first pair of MOSFETs are coupled to first terminals of the second pair of MOSFETs, and second terminals of the first pair of MOSFETs are coupled to. second terminals of the second pair of MOSFETs; and a shared MOSFET stack coupled to the first pair of MOSFETs and the second pair of MOSFETs.Type: ApplicationFiled: June 30, 2021Publication date: January 5, 2023Inventors: Ruifeng Sun, Sherry Wu, Michael S. Johnson, Vitor Pereira
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Publication number: 20210175855Abstract: A transmitter including a frequency synthesizer with a voltage-controlled oscillator that provides an oscillating signal, a programmable delay circuit that delays the oscillating signal to provide a delayed oscillating signal, a power amplifier that is configured to use the delayed oscillating signal for transmitting a signal, and a delay controller that programs the delay circuit with a delay time that reduces interference caused by coupling from the power amplifier to the voltage-controlled oscillator. The delay circuit may be programmed to reduce control voltage change of the voltage-controlled oscillator as a function of delay change, and/or to reduce phase noise degradation at an output of the transmitter as a function of delay change. The delay may be adjusted based on detected operating temperature. A calibration value may be determined at a calibration frequency, in which a frequency offset may be determined based on a selected channel frequency.Type: ApplicationFiled: December 6, 2019Publication date: June 10, 2021Inventors: Rangakrishnan Srinivasan, Mustafa H. Koroglu, Zhongda Wang, Francesco Barale, Abdulkerim L. Coban, John M. Khoury, Sriharsha Vasadi, Michael S. Johnson, Vitor Pereira
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Patent number: 10290189Abstract: An automated banking machine operative to cause financial transfers responsive to data read from data bearing records. The automated banking machine includes a card reader that is operative to read card data from user cards corresponding to financial accounts. The automated banking machine is operative responsive to the card data to carry out transactions that transfer and/or allocate funds between accounts. The automated banking machine is further operative to provide users with a receipt for transactions conducted. The automated banking machine includes a cash dispenser operative to dispense cash to machine users and to cause the value of cash to be assessed to financial accounts corresponding to card data. The automated banking machine is further operative to receive currency bills or other sheets from a user and to process and store such sheets through operation of a currency accepting device. The account corresponding to card data may be credited for the value of bills or other sheets received.Type: GrantFiled: February 20, 2018Date of Patent: May 14, 2019Assignee: Diebold Nixdorf, IncorporatedInventors: Jeffrey M. Eastman, Brian Jones, Michael S. Johnson, Shawn Griggy, Jeff A. Brannan, Michael J. Harty, Robert W. Barnett, Eric S. VanKeulen, Mike P. Ryan, William D. Beskitt, Kenneth Turocy
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Patent number: 10256854Abstract: In an embodiment, an apparatus includes: a transmit circuit to upconvert a baseband signal to a first differential radio frequency (RF) signal, the transmit circuit to convert the first differential RF signal to a first single-ended RF signal; a duty cycle correction circuit coupled to the transmit circuit to receive the first single-ended RF signal and compensate for a duty cycle variation in the first single-ended RF signal to output a duty cycle-corrected RF signal; a conversion circuit to convert the duty cycle-corrected RF signal to a second differential RF signal; and an interface circuit to transfer the second differential RF signal from a first ground domain to a second ground domain.Type: GrantFiled: January 19, 2018Date of Patent: April 9, 2019Assignee: Silicon Laboratories Inc.Inventors: Rangakrishnan Srinivasan, Sriharsha Vasadi, Zhongda Wang, Mustafa H. Koroglu, John M. Khoury, Aslamali A. Rafi, Michael S. Johnson, Francesco Barale, Sherry Xiaohong Wu
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Publication number: 20180174405Abstract: An automated banking machine operative to cause financial transfers responsive to data read from data bearing records. The automated banking machine includes a card reader that is operative to read card data from user cards corresponding to financial accounts. The automated banking machine is operative responsive to the card data to carry out transactions that transfer and/or allocate funds between accounts. The automated banking machine is further operative to provide users with a receipt for transactions conducted. The automated banking machine includes a cash dispenser operative to dispense cash to machine users and to cause the value of cash to be assessed to financial accounts corresponding to card data. The automated banking machine is further operative to receive currency bills or other sheets from a user and to process and store such sheets through operation of a currency accepting device. The account corresponding to card data may be credited for the value of bills or other sheets received.Type: ApplicationFiled: February 20, 2018Publication date: June 21, 2018Inventors: Jeffrey M. EASTMAN, Brian Jones, Michael S. Johnson, Shawn Griggy, Jeff A. Brannan, Michael J. Harty, Robert W. Barnett, Eric S. VanKeulen, Mike P. Ryan, William D. BESKITT, Kenneth Turocy
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Patent number: 9898900Abstract: An automated banking machine operative to cause financial transfers responsive to data read from data bearing records. The automated banking machine includes a card reader that is operative to read card data from user cards corresponding to financial accounts. The automated banking machine is operative responsive to the card data to carry out transactions that transfer and/or allocate funds between accounts. The automated banking machine is further operative to provide users with a receipt for transactions conducted. The automated banking machine includes a cash dispenser operative to dispense cash to machine users and to cause the value of cash to be assessed to financial accounts corresponding to card data. The automated banking machine is further operative to receive currency bills or other sheets from a user and to process and store such sheets through operation of a currency accepting device. The account corresponding to card data may be credited for the value of bills or other sheets received.Type: GrantFiled: June 20, 2016Date of Patent: February 20, 2018Assignee: Diebold Nixdorf, IncorporatedInventors: Jeffrey M. Eastman, Brian Jones, Michael S. Johnson, Shawn Griggy, Jeff A. Brannan, Michael J. Harty, Robert W. Barnett, Eric S. Vankeulen, Mike P. Ryan, William D. Beskitt, Kenneth Turocy
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Publication number: 20170046925Abstract: An automated banking machine operative to cause financial transfers responsive to data read from data bearing records. The automated banking machine includes a card reader that is operative to read card data from user cards corresponding to financial accounts. The automated banking machine is operative responsive to the card data to carry out transactions that transfer and/or allocate funds between accounts. The automated banking machine is further operative to provide users with a receipt for transactions conducted. The automated banking machine includes a cash dispenser operative to dispense cash to machine users and to cause the value of cash to be assessed to financial accounts corresponding to card data. The automated banking machine is further operative to receive currency bills or other sheets from a user and to process and store such sheets through operation of a currency accepting device. The account corresponding to card data may be credited for the value of bills or other sheets received.Type: ApplicationFiled: June 20, 2016Publication date: February 16, 2017Applicant: Diebold Self-Service Systems Div of Diebold, Inc.Inventors: Jeffrey M. EASTMAN, Brian JONES, Michael S. JOHNSON, Shawn GRIGGY, Jeff A. BRANNAN, Michael J. HARTY, Robert W. BARNETT, Eric S. VANKEULEN, Mike P. RYAN, William D. BESKITT, Kenneth TUROCY
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Patent number: 9379676Abstract: Circuitry and methods are disclosed that may employ common mode calibration circuitry configured to at least partially calibrate out impedance differences or mismatches between the differential signal paths of differential signal circuitry. The common mode calibration circuitry may be integrated as an internal part of integrated differential signal circuitry that includes a differential amplifier to reject common mode noise, and may be used to reduce or substantially eliminate any external and/or internal difference in signal path resistance that exists between the differential signal paths of the integrated differential signal circuitry. A common mode calibration signal may be internally or externally applied to the signal inputs of differential signal circuitry, and used to determine a setting for the common mode calibration circuitry that at least partially calibrates out impedance differences or mismatches between the differential signal paths of differential signal circuitry.Type: GrantFiled: January 28, 2014Date of Patent: June 28, 2016Assignee: Silicon Laboratories Inc.Inventors: Michael S. Johnson, Russell Croman
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Patent number: 9373229Abstract: An automated banking machine operative to cause financial transfers responsive to data read from data bearing records. The automated banking machine includes a card reader that is operative to read card data from user cards corresponding to financial accounts. The automated banking machine is operative responsive to the card data to carry out transactions that transfer and/or allocate funds between accounts. The automated banking machine is further operative to provide users with a receipt for transactions conducted. The automated banking machine includes a cash dispenser operative to dispense cash to machine users and to cause the value of cash to be assessed to financial accounts corresponding to card data. The automated banking machine is further operative to receive currency bills or other sheets from a user and to process and store such sheets through operation of a currency accepting device. The account corresponding to card data may be credited for the value of bills or other sheets received.Type: GrantFiled: August 5, 2014Date of Patent: June 21, 2016Assignee: Diebold Self-Service Systems, Division of Diebold, IncorporatedInventors: Jeffrey M. Eastman, Brian Jones, Michael S. Johnson, Shawn Griggy, Jeff A. Brannan, Michael J. Harty, Robert W. Barnett, Eric S. Vankeulen, Mike P. Ryan, William D. Beskitt, Kenneth Turocy
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Patent number: 9196962Abstract: A long-wave or medium-wave receiver receives a first signal from a first terminal of a loopstick antenna on a positive antenna input terminal of the receiver and receives a second signal from a second terminal of the loopstick antenna on a negative antenna input terminal of the receiver. The first and second signals are processed differentially in the receiver. The receiver may optionally be configured to operate in either a differential mode or a single-ended mode by setting switches to selectively connect one of the antenna input terminals to ground in single-ended mode.Type: GrantFiled: May 10, 2012Date of Patent: November 24, 2015Assignee: Silicon Laboratories Inc.Inventors: Michael S. Johnson, Russell Croman, Scott D. Willingham
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Publication number: 20150214911Abstract: Circuitry and methods are disclosed that may employ common mode calibration circuitry configured to at least partially calibrate out impedance differences or mismatches between the differential signal paths of differential signal circuitry. The common mode calibration circuitry may be integrated as an internal part of integrated differential signal circuitry that includes a differential amplifier to reject common mode noise, and may be used to reduce or substantially eliminate any external and/or internal difference in signal path resistance that exists between the differential signal paths of the integrated differential signal circuitry. A common mode calibration signal may be internally or externally applied to the signal inputs of differential signal circuitry, and used to determine a setting for the common mode calibration circuitry that at least partially calibrates out impedance differences or mismatches between the differential signal paths of differential signal circuitry.Type: ApplicationFiled: January 28, 2014Publication date: July 30, 2015Inventors: Michael S. Johnson, Russell Croman
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Patent number: 9054672Abstract: Variable capacitive attenuation circuitry and associated methods are disclosed that may be implemented to employ a plurality of multi-purpose capacitors that may be selectably coupled together in different configurations to form a capacitive divider having different respective attenuation properties. In a particular embodiment, each of the capacitors of the disclosed capacitive attenuation circuitry may be selectably coupled to an RF reference as either a shunt capacitor or coupled in series between an RF signal input and an attenuated RF signal output as a series capacitor, thus forming a capacitive divider having selected attenuation properties. The disclosed variable capacitive attenuation circuitry may be advantageously utilized to attenuate an input RF signal and to provide a resulting attenuated RF output signal, for example, in the front end of RF receiver circuitry.Type: GrantFiled: May 8, 2012Date of Patent: June 9, 2015Assignee: Silicon Laboratories Inc.Inventor: Michael S. Johnson
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Publication number: 20150046187Abstract: A system and method for connecting a clinical trial participant with a transportation provider. The system, based on information from an authentication mechanism, determines whether an individual requesting desired transportation is an authenticated clinical trial participant having a participant record in a patient recruitment management system database. The system, based on information from an authorization mechanism, determines whether the authenticated clinical trial participant is an authorized clinical trial participant for procurement of the transportation being requested. When the authenticated clinical trial participant is the authorized clinical trial participant for the desired transportation, the patient recruitment management system outputs an indication of approval to connect the clinical trial participant with a transportation provider.Type: ApplicationFiled: August 7, 2014Publication date: February 12, 2015Inventors: Michael S. Johnson, Joan F. Bachenheimer, Jennifer C. Dinkel, Matthew L. Kibby
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Publication number: 20140379362Abstract: A clinical trial participant reimbursement system relies on a separate a patient tracking system having a patient database with a participant record unique identification string for each patient of a plurality of patients configured in such a way that maintains patient anonymity and does not itself convey patient identifying information. The clinical trial participant reimbursement system creates an association between the participant record unique identification string and a reloadable payment card unique identification string for a payment card assigned to each participant for receiving reimbursement payments. The payment card itself can be issued without being coupled to the patient's bank account, and by loading a payment card there is no need to issue checks with the patient's name (i.e., patient identifying information) thereon. The payment card can be issued with a zero balance, a pre-determined balance, or a customized balance indicated by the system and set at the time of the card activation.Type: ApplicationFiled: June 3, 2014Publication date: December 25, 2014Inventors: Joan F. Bachenheimer, Michael S. Johnson, Matthew L. Kibby
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Publication number: 20140339758Abstract: An automated banking machine operative to cause financial transfers responsive to data read from data bearing records. The automated banking machine includes a card reader that is operative to read card data from user cards corresponding to financial accounts. The automated banking machine is operative responsive to the card data to carry out transactions that transfer and/or allocate funds between accounts. The automated banking machine is further operative to provide users with a receipt for transactions conducted. The automated banking machine includes a cash dispenser operative to dispense cash to machine users and to cause the value of cash to be assessed to financial accounts corresponding to card data. The automated banking machine is further operative to receive currency bills or other sheets from a user and to process and store such sheets through operation of a currency accepting device. The account corresponding to card data may be credited for the value of bills or other sheets received.Type: ApplicationFiled: August 5, 2014Publication date: November 20, 2014Inventors: Jeffrey M. EASTMAN, Brian JONES, Michael S. JOHNSON, Shawn GRIGGY, Jeff A. BRANNAN, Michael J. HARTY, Robert W. BARNETT, Eric S. VANKEULEN, Mike R. RYAN, William D. BESKITT, Kenneth TUROCY