Patents by Inventor Petru Emanuel Stingu
Petru Emanuel Stingu 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: 20210399581Abstract: A method for wirelessly providing power to a LED includes: receiving an AC input voltage having a first frequency via a cable; generating a first rectified voltage at a first node from the AC input voltage, the first node coupled to a first filtering non-electrolytic capacitor; powering a driver with the first rectified voltage; wirelessly transmitting power by driving a first resonant tank with the driver with a driving voltage at a second frequency higher than the first frequency, the driving voltage having a sinusoidal envelope at the first frequency and approximating a square-wave at the second frequency; receiving the wirelessly transmitted power with a second resonant tank; generating a second rectified voltage at second node from a voltage across the second resonant tank, the second node coupled to a second filtering capacitor; generating a DC voltage from the second rectified voltage; and powering the LED with the DC voltage.Type: ApplicationFiled: June 17, 2020Publication date: December 23, 2021Inventors: Petru Emanuel Stingu, Malek Ramezani, Kenneth Moore, Ruwanga Dassanayake, Yulong Hou
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Publication number: 20210352997Abstract: In an embodiment, a method for heating a personal device using a wirelessly-powered heating device includes: wirelessly receiving power with a receiving coil of the wirelessly-powered heating device, the receiving coil located inside the personal device, where the receiving coil is coupled to a capacitor of the wirelessly-powered heating device to form a receiver resonant tank; and heating the personal device with heat produced by a resistance of the receiving coil, where the receiving coil functions as a receiver antenna and as a heat producing element.Type: ApplicationFiled: April 21, 2021Publication date: November 18, 2021Inventors: Petru Emanuel Stingu, Malek Ramezani, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Patent number: 11159063Abstract: In accordance with an embodiment, a wireless power transmitter includes a charging surface, a transmitting antenna configured to generate an electromagnetic field extending above the charging surface, a sensing array disposed between the transmitting antenna and the charging surface, and a controller coupled to the sensing array. The sensing array includes a plurality of sensors. Each sensor of the plurality of sensors is configured to generate a respective signal indicative of a strength of the electromagnetic field. The controller is configured to detect a presence of a metallic object, other than a receiving antenna of a power receiver, in the electromagnetic field based on the respective signal generated by one or more sensors of the plurality of sensors.Type: GrantFiled: June 26, 2020Date of Patent: October 26, 2021Assignee: Spark Connected LLCInventors: Petru Emanuel Stingu, Kenneth Moore
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Patent number: 11159056Abstract: In an embodiment, a method for providing power to a load using a wireless power receiver includes: wirelessly receiving power using an LC tank; rectifying a voltage of the LC tank using a rectifier; setting a switched-mode power supply coupled between the rectifier and the load in bypass mode; after setting the switched-mode power supply in bypass mode, providing power to the load without switching transistors of the switched-mode power supply; and when wireless power reception is interrupted, providing power to the load by switching one or more transistors of the switched-mode power supply.Type: GrantFiled: September 14, 2020Date of Patent: October 26, 2021Assignee: Spark Connected LLCInventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Patent number: 11152823Abstract: In an embodiment, a wireless power transmitter module includes a sensing grid configured to detect a receiver, a movable wireless power transmitter unit including a wireless power transmitter coil, and a two-dimensional linear motor including a plurality of linear motor coils configured to move the movable wireless power transmitter unit in a two-dimensional plane towards a location of the receiver.Type: GrantFiled: April 1, 2020Date of Patent: October 19, 2021Assignee: Spark Connected LLCInventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20210320516Abstract: In an embodiment, a method includes: placing a template at a first surface of a structure; placing a first magnet at the first surface based on the template; placing a second magnet at a second surface of the structure at a first location in which a magnetic field between the first and second magnets moves the second magnet towards the first magnet; waiting for the second magnet to stop moving at a second location of the second surface; marking the second location; and attaching a sub-surface wireless charger based on a location of the template.Type: ApplicationFiled: April 12, 2021Publication date: October 14, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20210305850Abstract: In accordance with an embodiment, a wireless power transmitter includes a charging surface, a transmitting antenna configured to generate an electromagnetic field extending above the charging surface, a sensing array disposed between the transmitting antenna and the charging surface, and a controller coupled to the sensing array. The sensing array includes a plurality of sensors. Each sensor of the plurality of sensors is configured to generate a respective signal indicative of a strength of the electromagnetic field. The controller is configured to detect a presence of a metallic object, other than a receiving antenna of a power receiver, in the electromagnetic field based on the respective signal generated by one or more sensors of the plurality of sensors.Type: ApplicationFiled: June 11, 2021Publication date: September 30, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore
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Patent number: 11101845Abstract: A system is disclosed that includes a wireless power receiver, a battery charging system coupled to the wireless power receiver and configured to charge a battery using power received from the wireless power receiver and a wireless data communication system coupled to the wireless power receiver and the battery charging system, the wireless data communication system configured to determine a power requirement and to transmit the power requirement using the wireless power receiver.Type: GrantFiled: September 18, 2018Date of Patent: August 24, 2021Assignee: Semtech CorporationInventors: Ross E. Teggatz, David John Baldwin, Eric Christian Blackall, Feng Hou, Wen Cai, Petru Emanuel Stingu
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Publication number: 20210257864Abstract: In an embodiment, a method includes: wirelessly transmitting power using a transmitter LC tank to a wireless power receiver having a receiver LC tank; receiving a first received power packet from the wireless power receiver, the first received power packet including a received power value field indicative of a power level; determining a first power difference between transmitted power and received power based on the first received power packet; calculating a first received power compensation factor based on the first power difference; interrupting wirelessly transmitting power for a first slot period after receiving the first received power packet; performing a first measurement of a first signal associated with the transmitter LC tank during the first slot period; determining a first Q factor value based on the first measurement; comparing the first Q factor value with a reference Q factor value; and detecting a metallic object based on the comparison.Type: ApplicationFiled: February 14, 2021Publication date: August 19, 2021Inventors: Petru Emanuel Stingu, Ruwanga Dassanayake, Yulong Hou, Kenneth Moore
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Patent number: 11043854Abstract: In accordance with an embodiment, a wireless power transmitter includes a charging surface, a transmitting antenna configured to generate an electromagnetic field extending above the charging surface, a sensing array disposed between the transmitting antenna and the charging surface, and a controller coupled to the sensing array. The sensing array includes a plurality of sensors. Each sensor of the plurality of sensors is configured to generate a respective signal indicative of a strength of the electromagnetic field. The controller is configured to detect a presence of a metallic object, other than a receiving antenna of a power receiver, in the electromagnetic field based on the respective signal generated by one or more sensors of the plurality of sensors.Type: GrantFiled: June 26, 2020Date of Patent: June 22, 2021Assignee: Spark Connected LLCInventors: Petru Emanuel Stingu, Kenneth Moore
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Publication number: 20210083518Abstract: In an embodiment, a method for providing power to a load using a wireless power receiver includes: wirelessly receiving power using an LC tank; rectifying a voltage of the LC tank using a rectifier; setting a switched-mode power supply coupled between the rectifier and the load in bypass mode; after setting the switched-mode power supply in bypass mode, providing power to the load without switching transistors of the switched-mode power supply; and when wireless power reception is interrupted, providing power to the load by switching one or more transistors of the switched-mode power supply.Type: ApplicationFiled: September 14, 2020Publication date: March 18, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20210083525Abstract: In an embodiment, a method includes: wirelessly transmitting power using a transmitter LC tank; wirelessly receiving power from the transmitter LC tank using a receiver LC tank; interrupting wirelessly transmitting power for a slot period; during the slot period, shorting the receiver LC tank; during the slot period and after shorting the receiver LC tank, measuring a transmitter signal associated with the transmitter LC tank; determining a power loss associated with the wirelessly transmitting power based on the measured transmitter signal; and detecting a metallic object based on the determined power loss.Type: ApplicationFiled: September 14, 2020Publication date: March 18, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20210083509Abstract: An electronic device, a wireless charger and a wireless charging system are disclosed. In an embodiment an electronic device includes a metal housing including electronic components of the electronic device, a recess in the metal housing, a receiver coil configured to receive wireless power, the receiver coil located in the recess outside of the metal housing and a holding structure for the receiver coil, wherein the holding structure comprises a material with a high magnetic permeability, and wherein the receiver coil is electrically connected to the electronic components inside the metal housing.Type: ApplicationFiled: September 14, 2020Publication date: March 18, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20210083528Abstract: In an embodiment, a method for transmitting data from a wireless power receiver to a wireless power transmitter includes: wirelessly receiving power at a first frequency from a transmitter LC tank using a receiver LC tank; rectifying a voltage of the receiver LC tank using a rectifier; and while wirelessly receiving power, controlling a transistor coupled to the receiver LC tank to cause inflections in a transmitter current flowing through the transmitter LC tank to transmit data, detecting time locations of the inflections of the transmitter current within an oscillating cycle of the transmitter current based on a magnitude of the transmitter current, and determining the data based on the detected time locations.Type: ApplicationFiled: September 14, 2020Publication date: March 18, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20210066949Abstract: In an embodiment, a mains power fixture includes: mains input terminals or wires configured to be coupled to mains power supply; a wireless charging area; a rectifier coupled to the mains input terminals; and a wireless charger directly electrically connected to the rectifier. The wireless charger includes: a ferrite core in proximity to the wireless charging area, a transmitter coil wrapping around the ferrite core, and a driver configured to receive a rectified voltage from the rectifier and to drive the transmitter coil at a switching frequency.Type: ApplicationFiled: August 27, 2019Publication date: March 4, 2021Inventors: Petru Emanuel Stingu, Kenneth Moore, Ruwanga Dassanayake, Yulong Hou
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Publication number: 20200389050Abstract: In an embodiment, a method for wirelessly transferring power through a low-e window includes: causing a first current to flow through a transmitter coil disposed in a first outer surface of the low-e window, the first current having a first frequency; inducing, with the first current, a second current to flow through a receiver coil disposed in a second outer surface of the low-e window, the low-e window having a metal or metal oxide layer having a first thickness; generating a voltage based on the second current; and powering an electronic device coupled to the receiver coil with the generated voltage, where the first frequency is associated with a first skin depth of the metal or metal oxide layer, and where the first skin depth is larger than the first thickness.Type: ApplicationFiled: June 7, 2019Publication date: December 10, 2020Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Patent number: 10847997Abstract: In an embodiment, a method for wirelessly transferring power through a low-e window includes: causing a first current to flow through a transmitter coil disposed in a first outer surface of the low-e window, the first current having a first frequency; inducing, with the first current, a second current to flow through a receiver coil disposed in a second outer surface of the low-e window, the low-e window having a metal or metal oxide layer having a first thickness; generating a voltage based on the second current; and powering an electronic device coupled to the receiver coil with the generated voltage, where the first frequency is associated with a first skin depth of the metal or metal oxide layer, and where the first skin depth is larger than the first thickness.Type: GrantFiled: June 7, 2019Date of Patent: November 24, 2020Assignee: SPARK CONNECTED LLCInventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake
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Publication number: 20200328628Abstract: In accordance with an embodiment, a wireless power transmitter includes a charging surface, a transmitting antenna configured to generate an electromagnetic field extending above the charging surface, a sensing array disposed between the transmitting antenna and the charging surface, and a controller coupled to the sensing array. The sensing array includes a plurality of sensors. Each sensor of the plurality of sensors is configured to generate a respective signal indicative of a strength of the electromagnetic field. The controller is configured to detect a presence of a metallic object, other than a receiving antenna of a power receiver, in the electromagnetic field based on the respective signal generated by one or more sensors of the plurality of sensors.Type: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Inventors: Petru Emanuel Stingu, Kenneth Moore
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Publication number: 20200328627Abstract: In accordance with an embodiment, a wireless power transmitter includes a charging surface, a transmitting antenna configured to generate an electromagnetic field extending above the charging surface, a sensing array disposed between the transmitting antenna and the charging surface, and a controller coupled to the sensing array. The sensing array includes a plurality of sensors. Each sensor of the plurality of sensors is configured to generate a respective signal indicative of a strength of the electromagnetic field. The controller is configured to detect a presence of a metallic object, other than a receiving antenna of a power receiver, in the electromagnetic field based on the respective signal generated by one or more sensors of the plurality of sensors.Type: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Inventors: Petru Emanuel Stingu, Kenneth Moore
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Publication number: 20200313471Abstract: In an embodiment, a wireless power transmitter module includes a sensing grid configured to detect a receiver, a movable wireless power transmitter unit including a wireless power transmitter coil, and a two-dimensional linear motor including a plurality of linear motor coils configured to move the movable wireless power transmitter unit in a two-dimensional plane towards a location of the receiver.Type: ApplicationFiled: April 1, 2020Publication date: October 1, 2020Inventors: Petru Emanuel Stingu, Kenneth Moore, Yulong Hou, Ruwanga Dassanayake