Patents by Inventor GEORGE REDFIELD SPALDING, JR.
GEORGE REDFIELD SPALDING, JR. 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: 20230152463Abstract: The present disclosure relates to a light source system suitable for use in a time of flight camera. The light source system includes a light source, such as a laser, and a driver arranged to supply a drive current to the light source to turn the light source on to emit light. The driver includes a capacitor to store energy and then discharge to generate the drive current, and the driver is integrated into a semiconductor die on which the light source is mounted. Consequently, the driver includes within it the source of energy for the drive current and the light source and driver are very close together, meaning that the light source may be turned on and off very quickly with a relatively large drive current, in order to output a high optical power, short duration light pulse.Type: ApplicationFiled: January 19, 2023Publication date: May 18, 2023Inventors: David Neil, Jonathan Ephraim David Hurwitz, George Redfield Spalding, JR.
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Patent number: 11604283Abstract: The present disclosure relates to a light source system suitable for use in a time of flight camera. The light source system includes a light source, such as a laser, and a driver arranged to supply a drive current to the light source to turn the light source on to emit light. The driver includes a capacitor to store energy and then discharge to generate the drive current, and the driver is integrated into a semiconductor die on which the light source is mounted. Consequently, the driver includes within it the source of energy for the drive current and the light source and driver are very close together, meaning that the light source may be turned on and off very quickly with a relatively large drive current, in order to output a high optical power, short duration light pulse.Type: GrantFiled: February 3, 2020Date of Patent: March 14, 2023Assignee: Analog Devices International Unlimited CompanyInventors: David Neil, Jonathan Ephraim David Hurwitz, George Redfield Spalding, Jr.
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Publication number: 20220368544Abstract: The present disclosure relates to configuring at least one pair of devices in a physical unclonable function (PUF) apparatus and reading out at least one pair of devices for determining a persistent random PUF output. The pair of devices may be readout by measuring a physical difference between the devices/components caused by random manufacturing differences, which may then be used to determine a persistence random PUF output. Configuring the pair of devices includes measuring the random manufacturing difference and, based on that measurement, setting a readout condition for the pair of devices, which dictates aspects of the readout process that should be used for that pair of devices. Each time the pair of devices is readout in the future, it may be readout in accordance with the condition that was set at configuration.Type: ApplicationFiled: June 1, 2022Publication date: November 17, 2022Applicant: Analog Devices International Unlimited CompanyInventors: William Michael James HOLLAND, George Redfield SPALDING, JR., Jonathan Ephraim David HURWITZ
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Publication number: 20220328426Abstract: The present disclosure relates to integrated circuits which include various structural elements designed to reduce the impact of strain on the electronic components of the circuit. In particular, a combination of trenches and cavities are used to mechanically isolate the integrated circuit from the surrounding substrate. The trenches may be formed such that they surround the integrated circuit, and the cavities may be formed under the integrated circuit. As such, the integrated circuit may be formed on a portion of the substrate that forms a platform. In order that the platform does not move, it may be tethered to the surrounding substrate. By including such mechanical elements, variation in the electrical characteristics of the integrated circuit are reduced.Type: ApplicationFiled: June 27, 2022Publication date: October 13, 2022Applicant: Analog Devices International Unlimited CompanyInventors: Padraig Fitzgerald, George Redfield Spalding, JR., Jonathan Ephraim David Hurwitz, Michael J. Flynn
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Patent number: 11417611Abstract: The present disclosure relates to integrated circuits which include various structural elements designed to reduce the impact of strain on the electronic components of the circuit. In particular, a combination of trenches and cavities are used to mechanically isolate the integrated circuit from the surrounding substrate. The trenches may be formed such that they surround the integrated circuit, and the cavities may be formed under the integrated circuit. As such, the integrated circuit may be formed on a portion of the substrate that forms a platform. In order that the platform does not move, it may be tethered to the surrounding substrate. By including such mechanical elements, variation in the electrical characteristics of the integrated circuit are reduced.Type: GrantFiled: February 25, 2020Date of Patent: August 16, 2022Assignee: Analog Devices International Unlimited CompanyInventors: Padraig Fitzgerald, George Redfield Spalding, Jr., Jonathan Ephraim David Hurwitz, Michael J. Flynn
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Publication number: 20210273405Abstract: The present disclosure relates to a light source system suitable for use in a time of flight camera. The light source system includes a light source, such as a laser, and a driver arranged to supply a drive current to the light source to turn the light source on to emit light. The driver includes or is coupled to a capacitor to store energy and then discharge to generate the drive current. The driver can be integrated into a semiconductor die on which the light source is mounted. Thus, the driver can include within it the source of energy for the drive current and the light source and driver can be very close together, Therefore, the light source may be turned on and off very quickly, such as with a relatively large drive current, such as to output a high optical power, short duration light pulse.Type: ApplicationFiled: February 2, 2021Publication date: September 2, 2021Inventors: David Neil, Jonathan Ephraim Hurwitz, George Redfield Spalding, JR.
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Publication number: 20210265281Abstract: The present disclosure relates to integrated circuits which include various structural elements designed to reduce the impact of strain on the electronic components of the circuit. In particular, a combination of trenches and cavities are used to mechanically isolate the integrated circuit from the surrounding substrate. The trenches may be formed such that they surround the integrated circuit, and the cavities may be formed under the integrated circuit. As such, the integrated circuit may be formed on a portion of the substrate that forms a platform. In order that the platform does not move, it may be tethered to the surrounding substrate. By including such mechanical elements, variation in the electrical characteristics of the integrated circuit are reduced.Type: ApplicationFiled: February 25, 2020Publication date: August 26, 2021Applicant: Analog Devices International Unlimited CompanyInventors: Padraig Fitzgerald, George Redfield Spalding, JR., Jonathan Ephraim David Hurwitz, Michael J. Flynn
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Publication number: 20210239838Abstract: The present disclosure relates to a light source system suitable for use in a time of flight camera. The light source system includes a light source, such as a laser, and a driver arranged to supply a drive current to the light source to turn the light source on to emit light. The driver includes a capacitor to store energy and then discharge to generate the drive current, and the driver is integrated into a semiconductor die on which the light source is mounted. Consequently, the driver includes within it the source of energy for the drive current and the light source and driver are very close together, meaning that the light source may be turned on and off very quickly with a relatively large drive current, in order to output a high optical power, short duration light pulse.Type: ApplicationFiled: February 3, 2020Publication date: August 5, 2021Inventors: David Neil, Jonathan Ephraim David Hurwitz, George Redfield Spalding, JR.
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Patent number: 10892722Abstract: Differential sampling circuits may be adversely affected by changes in common mode voltage. Changes in the common mode voltage may alter the on resistance of transistor switches which it turn may mean that small signal changes are not correctly observed against a bigger common mode signal. The present disclosure relates to a way of improving the ability to resolve small differential signal changes by varying the supply or drive voltage to a component to compensate for common mode voltage changes.Type: GrantFiled: June 22, 2018Date of Patent: January 12, 2021Assignee: Analog Devices International Unlimited CompanyInventors: Jonathan Ephraim David Hurwitz, George Redfield Spalding, Jr., Seyed Amir Ali Danesh
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Patent number: 10447255Abstract: A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.Type: GrantFiled: May 22, 2017Date of Patent: October 15, 2019Assignee: Analog Devices GlobalInventors: Sherwin Paul Roldan Almazan, George Redfield Spalding, Jr.
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Patent number: 10425077Abstract: The present disclosure relates to a gate driver system suitable for driving the gate voltage of one or more transistors. The gate driver system is configured to operate in a first state when the current conducted by the transistor is relatively low and in a second state when the current conducted by the transistor is relatively high. In the second state, the gate voltage is set such that the source voltage at the transistor establishes a lower voltage across a source-driven load than is the case when operating the first state, thereby reducing the level of power consumption in the load during second state operation.Type: GrantFiled: June 6, 2018Date of Patent: September 24, 2019Assignee: Analog Devices Global Unlimited CompanyInventors: George Redfield Spalding, Jr., Chuen Tschi Liang
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Publication number: 20190081601Abstract: Differential sampling circuits may be adversely affected by changes in common mode voltage. Changes in the common mode voltage may alter the on resistance of transistor switches which it turn may mean that small signal changes are not correctly observed against a bigger common mode signal. The present disclosure relates to a way of improving the ability to resolve small differential signal changes by varying the supply or drive voltage to a component to compensate for common mode voltage changes.Type: ApplicationFiled: June 22, 2018Publication date: March 14, 2019Inventors: Jonathan Ephraim David Hurwitz, George Redfield Spalding, JR., Seyed Amir Ali Danesh
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Patent number: 10185340Abstract: A connection device for connecting a load to a power supply, comprising at least first and second current control devices arranged in parallel between the power supply and the load, and a controller arranged to switch the current control devices on in sequence for temporally overlapping on periods.Type: GrantFiled: August 1, 2016Date of Patent: January 22, 2019Assignee: Analog Devices, Inc.Inventors: George Redfield Spalding, Jr., Marcus O'Sullivan
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Publication number: 20170257086Abstract: A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.Type: ApplicationFiled: May 22, 2017Publication date: September 7, 2017Inventors: Sherwin Paul Roldan Almazan, George Redfield Spalding, JR.
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Patent number: 9660628Abstract: A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.Type: GrantFiled: December 8, 2014Date of Patent: May 23, 2017Assignee: Analog Devices GlobalInventors: Sherwin Paul Roldan Almazan, George Redfield Spalding, Jr.
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Publication number: 20170031375Abstract: A connection device for connecting a load to a power supply, comprising at least first and second current control devices arranged in parallel between the power supply and the load, and a controller arranged to switch the current control devices on in sequence for temporally overlapping on periods.Type: ApplicationFiled: August 1, 2016Publication date: February 2, 2017Inventors: George Redfield Spalding, JR., Marcus O'Sullivan
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Patent number: 9405307Abstract: A connection device for connecting a load to a power supply, comprising at least first and second current control devices arranged in parallel between the power supply and the load, and a controller arranged to switch the current control devices on in sequence for temporally overlapping on periods.Type: GrantFiled: February 6, 2014Date of Patent: August 2, 2016Assignee: Analog Devices, Inc.Inventors: George Redfield Spalding, Jr., Marcus O'Sullivan
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Publication number: 20160164506Abstract: A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.Type: ApplicationFiled: December 8, 2014Publication date: June 9, 2016Inventors: Sherwin Paul Almazon, George Redfield Spalding, JR.
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Patent number: 9081038Abstract: A voltage monitor comprising a first capacitive potential divider for presenting an attenuated representation of an input voltage to a comparator.Type: GrantFiled: October 4, 2011Date of Patent: July 14, 2015Assignee: Analog Devices, Inc.Inventor: George Redfield Spalding, Jr.
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Publication number: 20140152280Abstract: A connection device for connecting a load to a power supply, comprising at least first and second current control devices arranged in parallel between the power supply and the load, and a controller arranged to switch the current control devices on in sequence for temporally overlapping on periods.Type: ApplicationFiled: February 6, 2014Publication date: June 5, 2014Applicant: Analog Devices, Inc.Inventors: George Redfield Spalding, JR., Marcus O'Sullivan