Patents by Inventor Robert R. Rotzoll

Robert R. Rotzoll 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).

  • Publication number: 20210016591
    Abstract: A light-emitting module structure comprises a support substrate and a micro-module disposed on or in the support substrate that extends over only a portion of the support substrate. The micro-module comprises a rigid module substrate, an inorganic light-emitting diode, a power source, and a control circuit. The inorganic light-emitting diode, the power source, and the control circuit are disposed on or in the module substrate and the control circuit receives power from the power source to control the inorganic light-emitting diode to emit light. A light conductor is disposed on or in the support substrate and in alignment with the micro-module so that the inorganic light-emitting diode is disposed to emit light into the light conductor and the light conductor conducts the light beyond the micro-module to emit the light from the light conductor.
    Type: Application
    Filed: October 6, 2020
    Publication date: January 21, 2021
    Inventors: Mark Willner, Ronald S. Cok, Robert R. Rotzoll, Christopher Andrew Bower
  • Patent number: 10892619
    Abstract: A system and apparatus for use in energy conversion. In one embodiment, the apparatus comprises a gateway remotely located from an inverter and having (i) a first terminal for coupling to AC wiring upon which the inverter couples AC power, wherein the AC power is generated by the inverter from DC power, and wherein the gateway obtains data pertaining to operation of the inverter via the first terminal, and (ii) a second terminal for coupling information related to the data to an external monitor, remotely located with respect to the gateway, via a communications network.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: January 12, 2021
    Assignee: Enphase Energy, Inc.
    Inventors: Robert R. Rotzoll, Rajan N. Kapur, Suhas S. Patil
  • Patent number: 10873322
    Abstract: A detector circuit being part of a Radio Frequency Identification (RFID) device is provided, including: a bias current generator circuit configured to generate an output bias current that is proportional to the square of a temperature-dependent input current; first and second Field-Effect Transistor (FET) devices; at least one of the first and the second FET devices is biased by means of the output bias current of the bias current generator circuit so that FET device(s) operates in a sub-threshold region; an incoming Radio Frequency (RF) signal being coupled into at least one of the first and the second FET devices; a current source configured to generate a variable threshold current; and a comparator configured to determine, based on the variable threshold current and the incoming RF signal, whether a value of the incoming RF signal exceeds a threshold value.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: December 22, 2020
    Assignee: EM Microelectronic-Marin S.A.
    Inventors: Robert R Rotzoll, Kevin Scott Buescher
  • Patent number: 10836200
    Abstract: A light-emitting module structure comprises a support substrate and a micro-module disposed on or in the support substrate that extends over only a portion of the support substrate. The micro-module comprises a rigid module substrate, an inorganic light-emitting diode, a power source, and a control circuit. The inorganic light-emitting diode, the power source, and the control circuit are disposed on or in the module substrate and the control circuit receives power from the power source to control the inorganic light-emitting diode to emit light. A light conductor is disposed on or in the support substrate and in alignment with the micro-module so that the inorganic light-emitting diode is disposed to emit light into the light conductor and the light conductor conducts the light beyond the micro-module to emit the light from the light conductor.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: November 17, 2020
    Assignee: X Display Company Technology Limited
    Inventors: Mark Willner, Ronald S. Cok, Robert R. Rotzoll, Christopher Andrew Bower
  • Patent number: 10832609
    Abstract: An active-matrix digital-drive display system includes an array of pixels. Each pixel has an output device, a serial digital memory responsive to a load timing signal for receiving and storing a multi-bit digital pixel value during an uninterrupted load time period, and a drive circuit responsive to a pulse-width-modulation (PWM) timing signal and to the multi-bit digital pixel value to drive the output device during an uninterrupted output time period. A controller external to the array of pixels provides to each pixel the load timing signal and the multi-bit digital pixel value during the load time period and the PWM timing signal during the output time period. The PWM timing signal has multiple different PWM time periods that are sequentially provided at different times to the pixels. Each PWM time period has a different temporal length corresponding to a bit of the multi-bit digital pixel value.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: November 10, 2020
    Assignee: X Display Company Technology Limited
    Inventors: Robert R. Rotzoll, Ronald S. Cok
  • Publication number: 20200303923
    Abstract: A system and apparatus for use in energy conversion. In one embodiment, the apparatus comprises at least one power converter for producing power at a first level while receiving an indicium of proper operation and, upon not receiving the indicium of proper operation, producing power at a second level, where the second level is less than the first level.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 24, 2020
    Inventors: Robert R. Rotzoll, Rajan N. Kapur, Suhas S. Patil
  • Patent number: 10763805
    Abstract: The present invention concerns a programmable power amplifier comprising: an amplifier core transistor circuit connected to an amplifier output node; a switch connected to the amplifier core transistor circuit, the switch being configured to switch on and off the amplifier core transistor circuit; and a feedback circuit of the amplifier core transistor circuit. The feedback circuit comprises a digital-to-analog converter and an operational amplifier having a first input node configured to receive a first reference signal; a second input node connected to the digital-to-analog converter; and an output node for outputting an operational amplifier output signal and connected to the amplifier core transistor circuit for controlling the amount of current flowing in the amplifier core transistor circuit.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 1, 2020
    Assignee: EM Microelectronic-Marin S.A.
    Inventors: Robert R. Rotzoll, Kevin Scott Buescher
  • Patent number: 10675905
    Abstract: A hybrid currency banknote includes a banknote having visible markings. One or more light-controlling elements and a controller are embedded in or on the banknote. The controller is electrically connected to the one or more light-controlling elements to control the one or more light-controlling elements. A power input connection is electrically connected to the controller, or one or more light-controlling elements, or both. A power source can be connected to the power input connection, for example a piezoelectric or photovoltaic power source. In response to applied power, the controller causes the one or more light-controlling elements to emit light. A value can be stored in a memory in the controller and displayed by the light-controlling elements. The value can be assigned or varied by a hybrid currency teller machine.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: June 9, 2020
    Inventors: Ronald S. Cok, Robert R. Rotzoll, Christopher Bower, Mark Willner
  • Publication number: 20200176286
    Abstract: A module structure comprises a patterned substrate having a substrate surface and comprising a substrate post protruding from the substrate surface. A component is disposed on the substrate post. The component has a component top side and a component bottom side opposite the component top side. The component bottom side is disposed on the substrate post. The component extends over at least one edge of the substrate post. One or more component electrodes are disposed on the component.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 4, 2020
    Inventors: Robert R. Rotzoll, António José Marques Trindade, Raja Fazan Gul, Alexandre Chikhaoui, David Gomez, Ronald S. Cok
  • Publication number: 20200177149
    Abstract: A method of making a micro-module structure comprises providing a substrate, the substrate having a substrate surface and comprising a substrate post protruding from the substrate surface. A component is disposed on the substrate post, the component having a component top side and a component bottom side opposite the component top side, the component bottom side disposed on the substrate post. The component extends over at least one edge of the substrate post. One or more component electrodes are disposed on the component.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 4, 2020
    Inventors: António José Marques Trindade, Raja Fazan Gul, Robert R. Rotzoll, Alexandre Chikhaoui, David Gomez, Ronald S. Cok
  • Publication number: 20200176671
    Abstract: A cavity structure comprises a cavity substrate comprising a substrate surface, one or more cavity walls extending from the substrate surface, a cap disposed on the one or more cavity walls, and at least a portion of a module tether physically attached to the cavity substrate. The cavity substrate, the cap, and the one or more cavity walls form a cavity enclosing a volume, for example enclosing a vacuum, air, an added gas, or a liquid. The cavity structure can be a micro-transfer printable structure provided on a cavity structure source wafer. A plurality of cavity structures can be disposed on a destination substrate, for example by transfer printing, dry contact printing, or micro-transfer printing.
    Type: Application
    Filed: March 8, 2019
    Publication date: June 4, 2020
    Inventors: Ronald S. Cok, António José Marques Trindade, Raja Fazan Gul, Robert R. Rotzoll, Alexandre Chikhaoui
  • Publication number: 20200106408
    Abstract: The present invention concerns a programmable power amplifier comprising: an amplifier core transistor circuit connected to an amplifier output node; a switch connected to the amplifier core transistor circuit, the switch being configured to switch on and off the amplifier core transistor circuit; and a feedback circuit of the amplifier core transistor circuit. The feedback circuit comprises a digital-to-analog converter and an operational amplifier having a first input node configured to receive a first reference signal; a second input node connected to the digital-to-analog converter; and an output node for outputting an operational amplifier output signal and connected to the amplifier core transistor circuit for controlling the amount of current flowing in the amplifier core transistor circuit.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 2, 2020
    Applicant: EM Microelectronic-Marin S.A.
    Inventors: Robert R. Rotzoll, Kevin Scott Buescher
  • Publication number: 20200099366
    Abstract: The present invention relates to a detector circuit (10) being part of an RFID-device, and comprising: a bias current generator circuit (20) configured to generate an output bias current that is proportional to the square of a temperature-dependent input current, a first and a second FET-devices (21, 22), at least one of the first and the second FET-devices (21, 22) is biased by means of the output bias current of the bias current generator circuit (20) so that it operates in the sub-threshold region, an incoming RF-signal is coupled into at least one of the first and the second FET-devices, a current source (18) for generating a variable threshold current, and a comparator (19) for determining, on the basis of the variable threshold current and the incoming RF-signal, whether the value of the incoming RF-signal exceeds a threshold value.
    Type: Application
    Filed: September 26, 2018
    Publication date: March 26, 2020
    Applicant: EM Microelectronic-Marin S.A.
    Inventors: Robert R. ROTZOLL, Kevin Scott BUESCHER
  • Patent number: 10523157
    Abstract: A method for improving threshold accuracy in an RFID-device through offset cancellation, and including the steps of providing a comparator including a first and a second amplifiers, providing a current output digital-to-analogue converter, AC-coupling in an RF-signal into the detector circuit, during a first phase, applying a signal based on the RF-signal into the first amplifier while a current of the DAC is set to zero, and applying a current of the DAC into the second amplifier while a signal based on the RF-signal is set to zero, during a second phase, applying the current of the DAC into the first amplifier while the signal based on the RF-signal is set to zero, and applying the signal based on the RF-signal into the second amplifier while the current of the DAC is set to zero.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: December 31, 2019
    Assignee: EM Microelectronic-Marin SA
    Inventors: Robert R. Rotzoll, Kevin Scott Buescher
  • Patent number: 10522719
    Abstract: A micro-transfer color-filter device comprises a color filter, an electrical conductor disposed in contact with the color filter, and at least a portion of a color-filter tether attached to the color filter or structures formed in contact with the color filter. In certain embodiments, a color filter is a variable color filter electrically controlled through one or more electrodes and can be responsive to heat, electrical current, or an electrical field to modify its optical properties, such as color, transparency, absorption, or reflection. In certain embodiments, A color-filter device includes connection posts and can be provided in or on a source wafer suitable for micro-transfer printing. In some embodiments, a color-filter device is disposed on a device substrate and can include a control circuit for controlling the color filter. An array of micro-transfer color-filter devices can be disposed on a display substrate in order to form a display.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 31, 2019
    Assignee: X-Celeprint Limited
    Inventors: Ronald S. Cok, Christopher Andrew Bower, Robert R. Rotzoll, Mark Willner
  • Patent number: 10468993
    Abstract: A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several power transistors configured as switches, several solid-dielectric capacitors for filtering and energy storage, several inductors for power conversion and ancillary components to support the above elements in operation. The integrated circuit includes all monitoring, control and communications circuitry needed to operate the inverter. The integrated circuit controls the activity of pulse-width modulated power handling transistors in both an input boost converter and a single-phase or multi-phase output buck converter. The integrated circuit also monitors all power processing voltages and currents of the inverter and can take appropriate action to limit power dissipation in the inverter, maximize the available power from the associated PV module and shut down the inverter output if the grid conditions so warrant.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: November 5, 2019
    Assignee: Enphase Energy, Inc.
    Inventor: Robert R. Rotzoll
  • Patent number: 10395582
    Abstract: A parallel redundant integrated-circuit system includes an input connection, an output connection and first and second active circuits. The first active circuit includes one or more first integrated circuits and has an input connected to the input connection and an output connected to the output connection. The second active circuit includes one or more second integrated circuits and is redundant to the first active circuit, has an input connected to the input connection, and has an output connected to the output connection. The second integrated circuits are separate and distinct from the first integrated circuits.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: August 27, 2019
    Assignee: X-Celeprint Limited
    Inventors: Ronald S. Cok, Robert R. Rotzoll, Christopher Bower, Matthew Meitl
  • Patent number: 10388205
    Abstract: A digital-drive display system, comprising an array of display pixels, each display pixel having a light emitter, a digital memory for storing a digital pixel value, and a drive circuit that drives the light emitter in response to the digital pixel value. The drive circuit can respond to a control signal provided to all of the display pixels in common by a display controller that loads digital pixel values in the digit memory of each display pixel.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: August 20, 2019
    Assignee: X-Celeprint Limited
    Inventors: Ronald S. Cok, Robert R. Rotzoll, Christopher Andrew Bower
  • Patent number: 10360846
    Abstract: A distributed pulse-width modulation system includes an array of pulse-width modulation elements, each element including a digital memory for storing a plurality of multi-bit digital values, a drive circuit for each stored multi-bit digital value, and an output device for each stored multi-bit digital value. The multi-bit digital values all have the same number of bits. For each stored multi-bit digital value, the corresponding drive circuit drives the corresponding output device in response to the multi-bit digital value stored in the digital memory. A system controller includes a memory for storing the multi-bit digital values for each pulse-width modulation element and a communication circuit communicates each multi-bit digital value to each corresponding pulse-width modulation element.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: July 23, 2019
    Assignee: X-Celeprint Limited
    Inventors: Ronald S. Cok, Robert R. Rotzoll
  • Patent number: 10361677
    Abstract: A micro-transfer printable transverse bulk acoustic wave filter comprises a piezoelectric filter element having a top side, a bottom side, a left side, and a right side disposed over a sacrificial portion on a source substrate. A top electrode is in contact with the top side and a bottom electrode is in contact with the bottom side. A left acoustic mirror is in contact with the left side and a right acoustic mirror is in contact with the right side. The thickness of the transverse bulk acoustic wave filter is substantially less than its length or width and its length can be greater than its width. The transverse bulk acoustic wave filter can be disposed on, and electrically connected to, a semiconductor substrate comprising an electronic circuit to control the transverse bulk acoustic wave filter and form a composite heterogeneous device that can be micro-transfer printed.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 23, 2019
    Assignee: X-Celeprint Limited
    Inventors: Christopher Bower, Matthew Meitl, Ronald S. Cok, Robert R. Rotzoll