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).

  • Patent number: 11282439
    Abstract: An analog pulse-width-modulation circuit comprises an analog storage circuit, a load circuit responsive to control signals to load (e.g., store analog information in) the analog storage circuit, a discharge circuit that discharges the analog storage circuit over time, a constant-current supply providing a constant current, a digital switch responsive to the discharge circuit that switches the constant current, and a functional element connected to the digital switch that operates in response to the constant current. The analog pulse-width-modulation circuit can comprise an output control circuit that isolates or connects the discharge circuit from the analog storage circuit.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: March 22, 2022
    Assignee: X Display Company Technology Limited
    Inventors: Ronald S. Cok, Robert R. Rotzoll, Matthew Alexander Meitl
  • Publication number: 20220069154
    Abstract: An electro-optically controlled active-matrix system comprises a system substrate, row wires extending in a row direction disposed on the system substrate, a row controller providing a row electrical signal to each row wire, column light-pipes extending in a column direction disposed on the system substrate, a column controller providing a column optical signal to each column light-pipe, and pixels disposed over the system substrate. Each pixel can comprise a pixel circuit that is uniquely responsive to a row wire and to a column light-pipe, the pixel circuit receiving the row electrical signal from the row wire and receiving the column optical signal from the column light-pipe. In some embodiments, column wires carrying column electrical signals extend in a column direction over the system substrate and the pixel circuit is capacitively coupled to the row wire, the column wire, or both.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 3, 2022
    Inventors: Christopher Andrew Bower, Matthew Alexander Meitl, Robert R. Rotzoll, Ronald S. Cok
  • Publication number: 20220020315
    Abstract: An analog pulse-width-modulation circuit comprises an analog storage circuit, a load circuit responsive to control signals to load (e.g., store analog information in) the analog storage circuit, a discharge circuit that discharges the analog storage circuit over time, a constant-current supply providing a constant current, a digital switch responsive to the discharge circuit that switches the constant current, and a functional element connected to the digital switch that operates in response to the constant current. The analog pulse-width-modulation circuit can comprise an output control circuit that isolates or connects the discharge circuit from the analog storage circuit.
    Type: Application
    Filed: July 16, 2020
    Publication date: January 20, 2022
    Inventors: Ronald S. Cok, Robert R. Rotzoll, Matthew Alexander Meitl
  • Publication number: 20210342659
    Abstract: A hybrid document includes a flexible document having visible markings. One or more light-controlling elements and a controller are embedded in or on the flexible document. 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. In some embodiments, the controller includes a memory and a value can be stored in the memory and displayed by the light-controlling element(s). In some embodiments, the value can be assigned or varied by a hybrid currency teller machine.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 4, 2021
    Inventors: Ronald S. Cok, Robert R. Rotzoll
  • Publication number: 20210339552
    Abstract: A hybrid document includes a flexible document having visible markings. One or more light-controlling elements and a controller are embedded in or on the flexible document. 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. In some embodiments, the controller includes a memory and a value can be stored in the memory and displayed by the light-controlling element(s). In some embodiments, the value can be assigned or varied by a hybrid currency teller machine.
    Type: Application
    Filed: October 9, 2020
    Publication date: November 4, 2021
    Inventors: Ronald S. Cok, Robert R. Rotzoll
  • Patent number: 10943946
    Abstract: An inorganic light-emitting diode (iLED) display comprises a display substrate comprising a display area and one or more holes extending through the display substrate in the display area and a plurality of inorganic light-emitting diodes (iLEDs) disposed on, in, or over the display substrate in a regular array in the display area. At least some of the iLEDs are disposed between at least some of the holes in the display area and at least some of the holes are between at least some of the iLEDs in the display area. The display substrate can be substantially rigid and the iLED display can a flexible black sheet laminated, affixed, or adjacent to the display substrate. One or more audio loudspeakers can be disposed adjacent to the flexible sheet with the flexible sheet disposed between the display substrate and the one or more audio loudspeakers.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: March 9, 2021
    Assignee: X Display Company Technology Limited
    Inventors: Robert R. Rotzoll, Ronald S. Cok
  • 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: 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: 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: 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