Patents by Inventor Vasan Venkataraman
Vasan Venkataraman 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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Patent number: 10788883Abstract: A communications system and method provides power-saving while maintaining required protocol timing resolution. In a communication system that requires a high-frequency, high-precision, but high-power, clock source to meet timing requirements, selective disablement and re-enablement of the high-frequency clock provides for both timing precision and power reduction in the system.Type: GrantFiled: May 26, 2017Date of Patent: September 29, 2020Assignee: ARM LtdInventors: Edgar H. Callaway, Jr., Vasan Venkataraman, Brian Alan Nagel
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Patent number: 10588087Abstract: A communications system and method provide power-saving while maintaining required protocol timing resolution. In a communication system that requires a high-frequency, high-precision, but high-power, clock source to meet timing requirements, selective disablement and re-enablement of the high-frequency clock provides for both timing precision and power reduction in the system.Type: GrantFiled: May 25, 2018Date of Patent: March 10, 2020Assignee: Arm LimitedInventors: Edgar H. Callaway, Jr., Vasan Venkataraman
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Patent number: 10209755Abstract: A system comprises a first domain 4 and second domain 6 which communicate via an interface 8. The first domain 4 transmits power state commands to the second domain 6 for controlling transitions of power states at the second domain 6. The power state commands include at least a power up command 50 for triggering a transition to a power up state and a power no-operation command 52 in response to which the second domain remains in the current one of the power states. The no-operation command 52 enables the second domain 6 to be left in either the power up state or a different power state even if the first domain 4 is powered down.Type: GrantFiled: January 30, 2017Date of Patent: February 19, 2019Assignee: ARM LimitedInventors: David Walter Flynn, Vasan Venkataraman
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Publication number: 20180343619Abstract: A communications system and method provide power-saving while maintaining required protocol timing resolution. In a communication system that requires a high-frequency, high-precision, but high-power, clock source to meet timing requirements, selective disablement and re-enablement of the high-frequency clock provides for both timing precision and power reduction in the system.Type: ApplicationFiled: May 25, 2018Publication date: November 29, 2018Applicant: Arm LimitedInventors: Edgar H. CALLAWAY, Jr., Vasan VENKATARAMAN
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Publication number: 20180341311Abstract: A communications system and method provides power-saving while maintaining required protocol timing resolution. In a communication system that requires a high-frequency, high-precision, but high-power, clock source to meet timing requirements, selective disablement and re-enablement of the high-frequency clock provides for both timing precision and power reduction in the system.Type: ApplicationFiled: May 26, 2017Publication date: November 29, 2018Applicant: ARM LtdInventors: Edgar H. CALLAWAY, JR., Vasan VENKATARAMAN, Brian Alan NAGEL
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Publication number: 20180217648Abstract: A system comprises a first domain 4 and second domain 6 which communicate via an interface 8. The first domain 4 transmits power state commands to the second domain 6 for controlling transitions of power states at the second domain 6. The power state commands include at least a power up command 50 for triggering a transition to a power up state and a power no-operation command 52 in response to which the second domain remains in the current one of the power states. The no-operation command 52 enables the second domain 6 to be left in either the power up state or a different power state even if the first domain 4 is powered down.Type: ApplicationFiled: January 30, 2017Publication date: August 2, 2018Inventors: David Walter FLYNN, Vasan VENKATARAMAN
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Patent number: 10007286Abstract: A method, apparatus, and device provide for the detection of the adequacy of the current sourcing capability of a power source. The current sourcing capability of the power source is dynamically detected by sampling comparison values obtained during one or more sampling sub-windows and determining a sample density of comparison values. In response to the sample density of comparison values crossing a selectable density threshold, an insufficient-supply indication is generated.Type: GrantFiled: August 28, 2015Date of Patent: June 26, 2018Assignee: Sunrise Micro Devices, Inc.Inventors: Vasan Venkataraman, Daniel Lewis Cross, Edgar H. Callaway, Jr.
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Patent number: 9716449Abstract: A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action. In particular, when the energy consumption for the electric motor connected with the device having a rotating or reciprocating mass goes to zero, the line voltage to the motor is switched off, causing the frequency of the voltage across the motor terminals to increase. When the period of the voltage across the motor terminals returns to substantially the same as the period of the line voltage, the line voltage is switched on or reapplied to the motor.Type: GrantFiled: April 1, 2014Date of Patent: July 25, 2017Assignee: The PowerWise Group, Inc.Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Patent number: 9628015Abstract: A system and method are provided for saving energy for an electric motor having periodic load variations by reducing the supply voltage to the motor during an open loop mode. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action. A closed loop controller computes information from the observed phase angle between the voltage and current supplied to the motor. By reducing the supply voltage to the motor, the observed phase angle may be reduced to a target phase angle value. By allowing some current flow, primarily of a reactive nature, an observable feedback parameter may be used in the closed loop control system as an indication of the load condition, to which the closed loop motor controller may react, supplying power when needed, such as in the energy consumption mode.Type: GrantFiled: August 29, 2014Date of Patent: April 18, 2017Assignee: The PowerWise Group, Inc.Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Publication number: 20160252921Abstract: A method, apparatus, and device provide for the detection of the adequacy of the current sourcing capability of a power source. The current sourcing capability of the power source is dynamically detected by sampling comparison values obtained during one or more sampling sub-windows and determining a sample density of comparison values. In response to the sample density of comparison values crossing a selectable density threshold, an insufficient-supply indication is generated.Type: ApplicationFiled: August 28, 2015Publication date: September 1, 2016Applicant: SUNRISE MICRO DEVICES, INC.Inventors: Vasan VENKATARAMAN, Daniel Lewis CROSS, Edgar H. CALLAWAY, JR.
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Publication number: 20160026202Abstract: A method, apparatus, and device provide for the detection of the adequacy of the current sourcing capability of a power source. The current sourcing capability of the power source is dynamically detected by sampling comparison values obtained during one or more sampling sub-windows and determining a sample density of comparison values. In response to the sample density of comparison values crossing a selectable density threshold, an insufficient-supply indication is generated.Type: ApplicationFiled: August 28, 2015Publication date: January 28, 2016Applicant: ARM LIMITEDInventors: Vasan VENKATARAMAN, Daniel Lewis CROSS, Edgar H. CALLAWAY, JR.
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Patent number: 9240745Abstract: A system and method are described for conserving energy by decoupling a supply voltage to an electric motor operating under periodic load variations. A time segment value corresponding to a duration of periodic load variations is obtained and the supply voltage is adjusted to maintain an observed phase angle for a supply voltage and current at a value corresponding to a target phase angle. At least one off-time period is identified during the time segment value that corresponds to when the adjusted supply voltage is applied to the motor. During a remainder of the time segment value, at least one turn-on time period is provided when the supply voltage is coupled to the motor. The system may enter to a closed-loop control process after a predetermined period of time to adjust to any changes in the periodic load variations.Type: GrantFiled: February 27, 2014Date of Patent: January 19, 2016Assignee: The Powerwise Group, Inc.Inventor: Vasan Venkataraman
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Publication number: 20150056083Abstract: A system and method are provided for saving energy for an electric motor having periodic load variations by reducing the supply voltage to the motor during an open loop mode. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action. A closed loop controller computes information from the observed phase angle between the voltage and current supplied to the motor. By reducing the supply voltage to the motor, the observed phase angle may be reduced to a target phase angle value. By allowing some current flow, primarily of a reactive nature, an observable feedback parameter may be used in the closed loop control system as an indication of the load condition, to which the closed loop motor controller may react, supplying power when needed, such as in the energy consumption mode.Type: ApplicationFiled: August 29, 2014Publication date: February 26, 2015Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Publication number: 20140294602Abstract: A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action. In particular, when the energy consumption for the electric motor connected with the device having a rotating or reciprocating mass goes to zero, the line voltage to the motor is switched off, causing the frequency of the voltage across the motor terminals to increase. When the period of the voltage across the motor terminals returns to substantially the same as the period of the line voltage, the line voltage is switched on or reapplied to the motor.Type: ApplicationFiled: April 1, 2014Publication date: October 2, 2014Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Patent number: 8823314Abstract: A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action. A closed loop controller in electrical connection with the motor computes the necessary information from the observed phase angle between the voltage and current supplied to the motor. By reducing the supply voltage to the motor, the observed phase angle may be reduced to a target phase angle value.Type: GrantFiled: September 1, 2010Date of Patent: September 2, 2014Assignee: The Powerwise Group, Inc.Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Publication number: 20140176040Abstract: A system and method are described for conserving energy by decoupling a supply voltage to an electric motor operating under periodic load variations. A time segment value corresponding to a duration of periodic load variations is obtained and the supply voltage is adjusted to maintain an observed phase angle for a supply voltage and current at a value corresponding to a target phase angle. At least one off-time period is identified during the time segment value that corresponds to when the adjusted supply voltage is applied to the motor. During a remainder of the time segment value, at least one turn-on time period is provided when the supply voltage is coupled to the motor. The system may enter to a closed-loop control process after a predetermined period of time to adjust to any changes in the periodic load variations.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Inventor: Vasan Venkataraman
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Patent number: 8698447Abstract: A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action.Type: GrantFiled: April 19, 2012Date of Patent: April 15, 2014Assignee: The Powerwise Group, Inc.Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Patent number: 8698446Abstract: A system and method are disclosed for turning off the voltage to a pump jack electric motor during predetermined periods of time to save energy. In the method, the motor's response to closed-loop control may be evaluated over several pump strokes. The periods of the pump stroke when it is feasible to turn off the motor may be identified. The consistency of the measurements over several strokes may be evaluated. The motor may be turned off during predetermined periods on subsequent pump strokes when each pump stroke shows sufficiently similar behavior to that predicted during the closed-loop control process. The system may return to the closed-loop control process after a predetermined period of time to adjust to any changes in the system.Type: GrantFiled: December 14, 2010Date of Patent: April 15, 2014Assignee: The PowerWise Group, Inc.Inventor: Vasan Venkataraman
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Publication number: 20120213645Abstract: A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action.Type: ApplicationFiled: April 19, 2012Publication date: August 23, 2012Applicant: The Powerwise Group, Inc.Inventors: John L. Lumsden, Paul H. Kelley, Vasan Venkataraman
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Publication number: 20110080130Abstract: A system and method are disclosed for turning off the voltage to a pump jack electric motor during predetermined periods of time to save energy. In the method, the motor's response to closed-loop control may be evaluated over several pump strokes. The periods of the pump stroke when it is feasible to turn off the motor may be identified. The consistency of the measurements over several strokes may be evaluated. The motor may be turned off during predetermined periods on subsequent pump strokes when each pump stroke shows sufficiently similar behavior to that predicted during the closed-loop control process. The system may return to the closed-loop control process after a predetermined period of time to adjust to any changes in the system.Type: ApplicationFiled: December 14, 2010Publication date: April 7, 2011Applicant: The Powerwise Group, Inc.Inventor: Vasan Venkataraman