Patents by Inventor Richard McCauley
Richard McCauley 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: 20240033395Abstract: An air sterilisation unit comprising a housing providing an air inlet and an air outlet and containing a filter module located between the air inlet and the air outlet, a UV-C treatment chamber located between the air inlet and the air outlet and containing at least one UV-C radiation source, and a ventilation system located between the air inlet, through the filter module and the UV-C treatment chamber and out of the housing through the air outlet, wherein the UV-C treatment chamber comprises an inlet end, an outlet end and a wall there between and the inlet end is closed with a first expanded polytetrafluoroethylene filter, the outlet end is closed with a second expanded polytetrafluoroethylene and the wall is provided with an expanded polytetrafluoroethylene liner, such that the UV-C radiation source is surrounded with expanded polytetrafluoroethylene for reflection of UV-C radiation within the chamber for destruction of pathogens in the air.Type: ApplicationFiled: December 7, 2021Publication date: February 1, 2024Inventor: Richard MCCAULEY
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Patent number: 10320399Abstract: A clocking system disclosed herein includes a delay locked loop (DLL) circuit with a plurality of delay elements, where the DLL circuit is configured to receive a clock input signal and generate a plurality of clock output signals. The clocking system also includes a feed-forward system configured to increase the speed of the clock signal transmission through the delay elements and to enforce symmetric zero crossings of the clock signal at each of the plurality of delay elements.Type: GrantFiled: June 8, 2018Date of Patent: June 11, 2019Assignee: Microsoft Technology Licensing, LLCInventors: Stefan Wurster, Richard McCauley, Barry Thompson
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Patent number: 10205931Abstract: A voltage mode laser diode driver selectively turns on and off a laser diode. An output stage has an output node configured to be connected to one of the terminals of the laser diode. Depending upon implementation, an active swing controller drives the output stage in a manner that substantially prevents inductive kickback from causing the output node voltage to swinging above the voltage level at the voltage output of the power supply, or swing below ground. The output stage provides a discharge path around the laser diode to shunt current associated with the inductive kickback, and substantially eliminates ringing on the output node of the output stage while the laser diode is off. A power supply controller adjusts the voltage level of the voltage output of the power supply so that current through the laser diode when on and emitting light is substantially equal to a predetermined desired current.Type: GrantFiled: March 13, 2017Date of Patent: February 12, 2019Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Barry Thompson, Stefan Wurster, Lawrence A. Prather, Dane Snow, Richard McCauley
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Publication number: 20180374413Abstract: Implementations described herein disclose a laser diode driver that allows switching low-voltage (LV) high-speed devices with while driving high voltage current to a laser diode without risking destroying the LV devices. Specifically, the laser diode driver disclosed herein is a pulsed high speed digital to analog (DAC) driver that uses high-speed LV transistors in advanced nodes for high-speed switching of current nodes.Type: ApplicationFiled: January 12, 2018Publication date: December 27, 2018Inventors: Richard MCCAULEY, Barry THOMPSON, Stefan M. WURSTER
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Publication number: 20180294816Abstract: A clocking system disclosed herein includes a delay locked loop (DLL) circuit with a plurality of delay elements, where the DLL circuit is configured to receive a clock input signal and generate a plurality of clock output signals. The clocking system also includes a feed-forward system configured to increase the speed of the clock signal transmission through the delay elements and to enforce symmetric zero crossings of the clock signal at each of the plurality of delay elements.Type: ApplicationFiled: June 8, 2018Publication date: October 11, 2018Inventors: Richard MCCAULEY, Barry THOMPSON, Stefan WURSTER
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Publication number: 20180198453Abstract: A clocking system disclosed herein includes a delay locked loop (DLL) circuit with a plurality of delay elements, where the DLL circuit is configured to receive a clock input signal and generate a plurality of clock output signals. The clocking system also includes a feed-forward system configured to increase the speed of the clock signal transmission through the delay elements and to enforce symmetric zero crossings of the clock signal at each of the plurality of delay elements.Type: ApplicationFiled: August 1, 2017Publication date: July 12, 2018Inventors: Richard MCCAULEY, Barry THOMPSON, Stefan WURSTER
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Patent number: 10020813Abstract: A clocking system disclosed herein includes a delay locked loop (DLL) circuit with a plurality of delay elements, where the DLL circuit is configured to receive a clock input signal and generate a plurality of clock output signals. The clocking system also includes a feed-forward system configured to increase the speed of the clock signal transmission through the delay elements and to enforce symmetric zero crossings of the clock signal at each of the plurality of delay elements.Type: GrantFiled: August 1, 2017Date of Patent: July 10, 2018Assignee: Microsoft Technology Licensing, LLCInventors: Richard McCauley, Barry Thompson, Stefan Wurster
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Patent number: 9769459Abstract: A voltage mode laser diode driver selectively turns on and off a laser diode. An output stage has an output node configured to be connected to one of the terminals of the laser diode. Depending upon implementation, an active swing controller drives the output stage in a manner that substantially prevents inductive kickback from causing the output node voltage to swinging above the voltage level at the voltage output of the power supply, or swing below ground. The output stage provides a discharge path around the laser diode to shunt current associated with the inductive kickback, and substantially eliminates ringing on the output node of the output stage while the laser diode is off. A power supply controller adjusts the voltage level of the voltage output of the power supply so that current through the laser diode when on and emitting light is substantially equal to a predetermined desired current.Type: GrantFiled: November 12, 2013Date of Patent: September 19, 2017Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Barry Thompson, Stefan Wurster, Lawrence A. Prather, Dane Snow, Richard McCauley
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Publication number: 20170187164Abstract: A voltage mode laser diode driver selectively turns on and off a laser diode. An output stage has an output node configured to be connected to one of the terminals of the laser diode. Depending upon implementation, an active swing controller drives the output stage in a manner that substantially prevents inductive kickback from causing the output node voltage to swinging above the voltage level at the voltage output of the power supply, or swing below ground. The output stage provides a discharge path around the laser diode to shunt current associated with the inductive kickback, and substantially eliminates ringing on the output node of the output stage while the laser diode is off. A power supply controller adjusts the voltage level of the voltage output of the power supply so that current through the laser diode when on and emitting light is substantially equal to a predetermined desired current.Type: ApplicationFiled: March 13, 2017Publication date: June 29, 2017Applicant: Microsoft Technology Licensing, LLCInventors: Barry Thompson, Stefan Wurster, Lawrence A. Prather, Dane Snow, Richard McCauley
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Publication number: 20150130903Abstract: A voltage mode laser diode driver selectively turns on and off a laser diode. An output stage has an output node configured to be connected to one of the terminals of the laser diode. Depending upon implementation, an active swing controller drives the output stage in a manner that substantially prevents inductive kickback from causing the output node voltage to swinging above the voltage level at the voltage output of the power supply, or swing below ground. The output stage provides a discharge path around the laser diode to shunt current associated with the inductive kickback, and substantially eliminates ringing on the output node of the output stage while the laser diode is off. A power supply controller adjusts the voltage level of the voltage output of the power supply so that current through the laser diode when on and emitting light is substantially equal to a predetermined desired current.Type: ApplicationFiled: November 12, 2013Publication date: May 14, 2015Applicant: Microsoft CorporationInventors: Barry Thompson, Stefan Wurster, Lawrence A. Prather, Dane Snow, Richard McCauley
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Patent number: 5936550Abstract: A surveillance apparatus and method for the surveillance of traffic are provided, in which the apparatus includes a housing for substantially completely enclosing and concealing a law enforcement vehicle therein, and a one-way window extending around part or nearly all of the housing, such that a vehicle operator in a vehicle inside the housing may visually monitor traffic, while the window prevents the vehicles in traffic from visually determining whether a vehicle is or is not present in the apparatus.Type: GrantFiled: October 28, 1998Date of Patent: August 10, 1999Inventor: Richard McCauley