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).
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Publication number: 20160020612Abstract: 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: ApplicationFiled: October 1, 2015Publication date: January 21, 2016Inventors: Robert R. Rotzoll, Rajan N. Kapur, Suhas S. Patil
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Patent number: 9013644Abstract: Shuttering eyewear (or shutter glasses) may be used to enable stereoscopic 3D and to provide different images to two viewers using a single display, known as Dual View. The shuttering eyewear may utilize charge recovery circuits. The charge recovery circuits may achieve high charge recovery efficiencies on the order of 80 to 90 percent resulting in a dramatic reduction in power supply battery operating current and a resulting increase in operating time. The charge recovery circuits may utilize switch mode boost conversion to recover most of the charge from a shutter that is being closed to one that is to be opened. Further, a charge recovery method for utilizing energy stored on a capacitive storage device may include closing a first active shutter, moving charge to a converter in buck mode to a capacitor, and pulling charge from the capacitor to open a second shutter.Type: GrantFiled: July 18, 2013Date of Patent: April 21, 2015Assignee: RealD Inc.Inventor: Robert R. Rotzoll
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Patent number: 9002308Abstract: A system is disclosed that may include an Automatic Gain Control (AGC) module configured to automatically adjust the gain of a receiver, which is configured to receive a signal. The signal includes a number of commands, which have a characteristic command length and a characteristic command interval. The command length may have a substantially shorter duration than the command interval. The system may also include a slicer configured to interface to a command processor. The system includes a command processor communicatively coupled with the AGC module and/or the slicer for providing a notification to the AGC module and/or the slicer associated with the ends of the commands. The AGC module is configured to adjust the gain of the receiver and the slicer threshold voltage is updated when the notification is received from the command processor.Type: GrantFiled: June 4, 2012Date of Patent: April 7, 2015Assignee: Maxim Integrated Products, Inc.Inventors: Andrew G. Zocher, Richard D. Davis, Theron L. Jones, Luiz A. Razera, Jr., Robert R. Rotzoll
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Patent number: 8659922Abstract: A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several switches, solid dielectric capacitors for filtering and energy storage, 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 switches 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: GrantFiled: September 14, 2012Date of Patent: February 25, 2014Assignee: Enphase Energy, Inc.Inventor: Robert R. Rotzoll
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Publication number: 20140009699Abstract: Shuttering eyewear (or shutter glasses) may be used to enable stereoscopic 3D and to provide different images to two viewers using a single display, known as Dual View. The shuttering eyewear may utilize charge recovery circuits. The charge recovery circuits may achieve high charge recovery efficiencies on the order of 80 to 90 percent resulting in a dramatic reduction in power supply battery operating current and a resulting increase in operating time. The charge recovery circuits may utilize switch mode boost conversion to recover most of the charge from a shutter that is being closed to one that is to be opened. Further, a charge recovery method for utilizing energy stored on a capacitive storage device may include closing a first active shutter, moving charge to a converter in buck mode to a capacitor, and pulling charge from the capacitor to open a second shutter.Type: ApplicationFiled: July 18, 2013Publication date: January 9, 2014Inventor: Robert R. Rotzoll
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Patent number: 8581441Abstract: A system and apparatus for generating power. In one embodiment, the apparatus comprises a power module for coupling to a DC power source via a DC bus, wherein the power module (i) converts a first power from the DC power source to a second power, and (ii) comprises a maximum power point tracking module unit for dynamically adjusting a load voltage of the DC power source; an AC bus; and a controller, physically separate from the power module and coupled to the power module via the AC bus, for operatively controlling the power module.Type: GrantFiled: September 14, 2012Date of Patent: November 12, 2013Assignee: Enphase Energy, Inc.Inventors: Robert R. Rotzoll, Rajan N. Kapur, Suhas S. Patil
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Patent number: 8565712Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: GrantFiled: March 21, 2011Date of Patent: October 22, 2013Assignee: Round Rock Research, LLCInventor: Robert R. Rotzoll
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Patent number: 8526832Abstract: Shuttering eyewear used to view 3D imagery and/or dual-view images may utilize an IR receiver filter with moderate to wide bandwidth to pass data sidebands of an on-off keying signal while strongly rejecting nearby interference sources. Filtering of the signal may be achieved via a circuit for passing data sidebands of infrared signals. The circuit may include a band pass filter with a low value of Q operable to filter out a first type of interference signal from a signal, a plurality of mixers operable to receive the signal from the band pass filter, wherein the plurality of mixers down converts the signal to baseband signals, and a plurality of low pass filters operable to receive the baseband signals from the plurality of mixers, wherein the plurality of low pass filters rejects a second type of interference.Type: GrantFiled: May 6, 2011Date of Patent: September 3, 2013Assignee: RealD Inc.Inventors: Robert R. Rotzoll, Roger Landowski, Douglas J Gorny
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Patent number: 8493519Abstract: Shuttering eyewear (or shutter glasses) may be used to enable stereoscopic 3D and to provide different images to two viewers using a single display, known as Dual View. The shuttering eyewear may utilize charge recovery circuits. The charge recovery circuits may achieve high charge recovery efficiencies on the order of 80 to 90 percent resulting in a dramatic reduction in power supply battery operating current and a resulting increase in operating time. The charge recovery circuits may utilize switch mode boost conversion to recover most of the charge from a shutter that is being closed to one that is to be opened. Further, a charge recovery method for utilizing energy stored on a capacitive storage device may include closing a first active shutter, moving charge to a converter in buck mode to a capacitor, and pulling charge from the capacitor to open a second shutter.Type: GrantFiled: May 6, 2011Date of Patent: July 23, 2013Assignee: RealD Inc.Inventor: Robert R. Rotzoll
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Publication number: 20130070494Abstract: A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several switches, solid dielectric capacitors for filtering and energy storage, 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 switches 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: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicant: Enphase Energy, Inc.Inventor: Robert R. Rotzoll
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Publication number: 20130030881Abstract: A radio frequency identification device includes an integrated circuit including a receiver, a transmitter, and a microprocessor. The receiver and transmitter together define an active transponder. The integrated circuit is preferably a monolithic single die integrated circuit including the receiver, the transmitter, and the microprocessor. Because the device includes an active transponder, instead of a transponder which relies on magnetic coupling for power, the device has a much greater range.Type: ApplicationFiled: July 20, 2012Publication date: January 31, 2013Inventors: James E. O'Toole, John R. Tuttle, Mark E. Tuttle, Tyler Lowrey, Kevin M. Devereaux, George E. Pax, Brian P. Higgins, David K. Ovard, Shu-Sun Yu, Robert R. Rotzoll
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Publication number: 20130015710Abstract: A system and apparatus for generating power. In one embodiment, the apparatus comprises a power module for coupling to a DC power source via a DC bus, wherein the power module (i) converts a first power from the DC power source to a second power, and (ii) comprises a maximum power point tracking module unit for dynamically adjusting a load voltage of the DC power source; an AC bus; and a controller, physically separate from the power module and coupled to the power module via the AC bus, for operatively controlling the power module.Type: ApplicationFiled: September 14, 2012Publication date: January 17, 2013Applicant: Enphase Energy, Inc.Inventors: Robert R. Rotzoll, Rajan N. Kapur, Suhas S. Patil
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Publication number: 20130012061Abstract: A replaceable photovoltaic inverter is mounted on each of a plurality of photovoltaic module for the conversion of direct current, produced by the photovoltaic cells, to alternating current. The inverter is coupled to a mounting bracket on the photovoltaic module such that is can be easily replaced. Replacement of an individual photovoltaic module inverter can occur during continuous operation of the photovoltaic module system with minimal impact on overall power production. The inverter is also mounted apart from the photovoltaic module to facilitate heat transfer generated by operation of the inverter.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Enphase Energy, Inc.Inventors: Robert R. Rotzoll, Rajan N. Kapur
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Publication number: 20120113335Abstract: Shuttering eyewear used to view 3D imagery and/or dual-view images may utilize an IR receiver filter with moderate to wide bandwidth to pass data sidebands of an on-off keying signal while strongly rejecting nearby interference sources. Filtering of the signal may be achieved via a circuit for passing data sidebands of infrared signals. The circuit may include a band pass filter with a low value of Q operable to filter out a first type of interference signal from a signal, a plurality of mixers operable to receive the signal from the band pass filter, wherein the plurality of mixers down converts the signal to baseband signals, and a plurality of low pass filters operable to receive the baseband signals from the plurality of mixers, wherein the plurality of low pass filters rejects a second type of interference.Type: ApplicationFiled: May 6, 2011Publication date: May 10, 2012Applicant: REALD INC.Inventors: Robert R. Rotzoll, Roger Landowski, Douglas J Gorny
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Publication number: 20110285533Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: ApplicationFiled: March 21, 2011Publication date: November 24, 2011Inventor: Robert R. Rotzoll
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Publication number: 20110273634Abstract: Shuttering eyewear (or shutter glasses) may be used to enable stereoscopic 3D and to provide different images to two viewers using a single display, known as Dual View. The shuttering eyewear may utilize charge recovery circuits. The charge recovery circuits may achieve high charge recovery efficiencies on the order of 80 to 90 percent resulting in a dramatic reduction in power supply battery operating current and a resulting increase in operating time. The charge recovery circuits may utilize switch mode boost conversion to recover most of the charge from a shutter that is being closed to one that is to be opened. Further, a charge recovery method for utilizing energy stored on a capacitive storage device may include closing a first active shutter, moving charge to a converter in buck mode to a capacitor, and pulling charge from the capacitor to open a second shutter.Type: ApplicationFiled: May 6, 2011Publication date: November 10, 2011Applicant: REALD INC.Inventor: Robert R. Rotzoll
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Patent number: 7912443Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: GrantFiled: August 22, 2007Date of Patent: March 22, 2011Assignee: Round Rock Research, LLCInventor: Robert R. Rotzoll
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Patent number: 7912442Abstract: The present invention teaches a communications system comprising a first communications device for receiving data and a wake up signal. The first communications device comprises an active mode of operation and a sleep mode of operation for reducing power consumption. Further, the system comprises means for switching the first communications device to and from sleep mode in response to receiving the wake up signal. Further, the system comprises a second communications device for transmitting data to the first device during its active mode, while transmitting the wake up signal to the first device during its sleep mode.Type: GrantFiled: November 9, 2006Date of Patent: March 22, 2011Assignee: Round Rock Research, LLCInventor: Robert R. Rotzoll
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Publication number: 20100309535Abstract: A method for shutter glass eyewear control provides for a command sequence having precise shutter timing and control information for opening and closing the left and right shutters of shutter glass eyewear. The infrared signal commands are offset from the corresponding shutter action to minimize interference while still allowing the eyewear to track changes in the timing of the infrared signal received from a display system. Command sequence encodings are provided for enhanced interference rejection.Type: ApplicationFiled: June 8, 2010Publication date: December 9, 2010Applicant: RealD INC.Inventors: Roger Landowski, Greg Graham, Robert R. Rotzoll, Douglas J. Gorny
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Patent number: 7825774Abstract: A radio frequency identification device includes an integrated circuit including a receiver, a transmitter, and a microprocessor. The receiver and transmitter together define an active transponder. The integrated circuit is preferably a monolithic single die integrated circuit including the receiver, the transmitter, and the microprocessor. Because the device includes an active transponder, instead of a transponder which relies on magnetic coupling for power, the device has a much greater range.Type: GrantFiled: October 25, 2007Date of Patent: November 2, 2010Assignee: Round Rock Research, LLCInventors: James E. O'Toole, John R. Tuttle, Mark E. Tuttle, Tyler A. Lowrey, Kevin M. Devereaux, George E. Pax, Brian P. Higgins, Shu-Sun Yu, David K. Ovard, Robert R. Rotzoll