Patents by Inventor Arun Kumar RAGHUNATHAN
Arun Kumar RAGHUNATHAN 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: 20250132608Abstract: A wireless power transceiver (WPT) device (102) is disclosed. The WPT device (102) includes an energy module (110) and a magnetic interfacing unit (114) comprising a transceiver coil (128). Further, the WPT device (102) includes a controller (116) configured to generate one of a first control signal and a second control signal based on at least one first parameter of the energy module (110) and at least one second parameter of one of a plurality of external devices (104). Also, the WPT device (102) includes a bi-directional driver (112) configured to transmit at least one of a first AC signal and a second AC signal through the transceiver coil (128) if the first control signal is received from the controller (116), and receive at least one of the first AC signal and the second AC signal if the second control signal is received from the controller (116).Type: ApplicationFiled: December 24, 2024Publication date: April 24, 2025Inventors: Suma Memana Narayana BHAT, Somakumar RAMACHANDRAPANICKER, Arun Kumar RAGHUNATHAN, Viswanathan KANAKASABAI, Deepak ARAVIND
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Publication number: 20250118992Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: ApplicationFiled: December 17, 2024Publication date: April 10, 2025Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Patent number: 12261453Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: GrantFiled: March 28, 2022Date of Patent: March 25, 2025Assignee: Dolby Laboratories Inc.Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Publication number: 20250047147Abstract: A wireless charging device is disclosed. The wireless charging device includes a transmitter detection coil configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device. Also, the wireless charging device includes a control unit coupled to the transmitter detection coil and configured to detect the receiver device based on the characteristic of the first AC voltage signal. Further, the wireless charging device includes a driver unit coupled to the control unit and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device is detected. In addition, the wireless charging device includes a power transmission coil configured to wirelessly transmit the second AC voltage signal to the receiver device.Type: ApplicationFiled: August 16, 2024Publication date: February 6, 2025Inventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
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Patent number: 12218520Abstract: A wireless power transceiver (WPT) device is disclosed. The WPT device includes an energy module and a magnetic interfacing unit comprising a transceiver coil. Further, the WPT device includes a controller configured to generate one of a first control signal and a second control signal based on at least one first parameter of the energy module and at least one second parameter of one of a plurality of external devices. Also, the WPT device includes a bi-directional driver configured to transmit at least one of a first AC signal and a second AC signal through the transceiver coil if the first control signal is received from the controller, and receive at least one of the first AC signal and the second AC signal if the second control signal is received from the controller.Type: GrantFiled: March 16, 2018Date of Patent: February 4, 2025Assignee: Dolby Laboratories Inc.Inventors: Suma Memana Narayana Bhat, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Viswanathan Kanakasabai, Deepak Aravind
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Patent number: 12212151Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: GrantFiled: September 18, 2023Date of Patent: January 28, 2025Assignee: Dolby Laboratories Inc.Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Patent number: 12074462Abstract: A wireless charging device is disclosed. The wireless charging device includes a transmitter detection coil configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device. Also, the wireless charging device includes a control unit coupled to the transmitter detection coil and configured to detect the receiver device based on the characteristic of the first AC voltage signal. Further, the wireless charging device includes a driver unit coupled to the control unit and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device is detected. In addition, the wireless charging device includes a power transmission coil configured to wirelessly transmit the second AC voltage signal to the receiver device.Type: GrantFiled: August 16, 2022Date of Patent: August 27, 2024Assignee: GE Intellectual Property Licensing, LLCInventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
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Publication number: 20240266880Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: ApplicationFiled: April 17, 2024Publication date: August 8, 2024Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Publication number: 20240047133Abstract: A charging pad (130) for charging one or more receiver devices (106, 108) is disclosed. The charging pad (130) includes a power drive unit (110) configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad (130) includes a transmitting unit (114) including a single power exchange coil (120) coupled to the power drive unit (110), wherein the single power exchange coil (120) includes a first coil segment (212) configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit (110). Also, the single power exchange coil (120) includes a second coil segment (214) configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit (110).Type: ApplicationFiled: October 23, 2023Publication date: February 8, 2024Inventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Publication number: 20240006917Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: ApplicationFiled: September 18, 2023Publication date: January 4, 2024Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Patent number: 11798737Abstract: A charging pad for charging one or more receiver devices is disclosed. The charging pad includes a power drive unit configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad includes a transmitting unit including a single power exchange coil coupled to the power drive unit, wherein the single power exchange coil includes a first coil segment configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit. Also, the single power exchange coil includes a second coil segment configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit.Type: GrantFiled: December 3, 2021Date of Patent: October 24, 2023Assignee: General Electric CompanyInventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Publication number: 20230327491Abstract: A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.Type: ApplicationFiled: June 16, 2023Publication date: October 12, 2023Inventors: Suma Memana Narayana Bhat, Viswanathan Kanakasabai, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11764609Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: GrantFiled: March 29, 2022Date of Patent: September 19, 2023Assignee: General Electric CompanyInventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Publication number: 20230268775Abstract: A wireless charging device includes a power source configured to generate a direct current (DC) voltage signal. Also, the wireless charging device includes a driver unit configured to receive the DC voltage signal and convert the DC voltage signal to a first alternating current (AC) voltage signal. Further, the wireless charging device includes a transmitting unit including a resonant capacitor and a resonant coil, coupled to the driver unit, wherein the transmitting unit is configured to receive and transmit the first AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a receiver device based on a change in at least one of a capacitive voltage across the resonant capacitor and an inductive voltage across the resonant coil if the receiver device is positioned within a predetermined distance from the transmitting unit.Type: ApplicationFiled: April 26, 2023Publication date: August 24, 2023Inventors: Sivabalan Mohan, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Rajendra Naik, Adnan Kutubuddin Bohori
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Patent number: 11689056Abstract: A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.Type: GrantFiled: May 21, 2018Date of Patent: June 27, 2023Assignee: General Electric CompanyInventors: Suma Memana Narayana Bhat, Viswanathan Kanakasabai, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11641134Abstract: A wireless charging device includes a power source configured to generate a direct current (DC) voltage signal. Also, the wireless charging device includes a driver unit configured to receive the DC voltage signal and convert the DC voltage signal to a first alternating current (AC) voltage signal. Further, the wireless charging device includes a transmitting unit including a resonant capacitor and a resonant coil, coupled to the driver unit, wherein the transmitting unit is configured to receive and transmit the first AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a receiver device based on a change in at least one of a capacitive voltage across the resonant capacitor and an inductive voltage across the resonant coil if the receiver device is positioned within a predetermined distance from the transmitting unit.Type: GrantFiled: March 19, 2018Date of Patent: May 2, 2023Assignee: General Electric CompanyInventors: Sivabalan Mohan, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Rajendra Naik, Adnan Kutubuddin Bohori
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Patent number: 11616399Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: GrantFiled: April 19, 2018Date of Patent: March 28, 2023Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11588349Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: GrantFiled: April 19, 2018Date of Patent: February 21, 2023Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Publication number: 20220393519Abstract: A wireless charging device is disclosed. The wireless charging device includes a transmitter detection coil configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device. Also, the wireless charging device includes a control unit coupled to the transmitter detection coil and configured to detect the receiver device based on the characteristic of the first AC voltage signal. Further, the wireless charging device includes a driver unit coupled to the control unit and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device is detected. In addition, the wireless charging device includes a power transmission coil configured to wirelessly transmit the second AC voltage signal to the receiver device.Type: ApplicationFiled: August 16, 2022Publication date: December 8, 2022Inventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
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Patent number: 11431198Abstract: A wireless charging device (102) is disclosed. The wireless charging device (102) includes a transmitter detection coil (130) configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device (104). Also, the wireless charging device (102) includes a control unit (112) coupled to the transmitter detection coil (130) and configured to detect the receiver device (104) based on the characteristic of the first AC voltage signal. Further, the wireless charging device (102) includes a driver unit (108) coupled to the control unit (112) and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device (104) is detected. In addition, the wireless charging device (102) includes a power transmission coil (116) configured to wirelessly transmit the second AC voltage signal to the receiver device (104).Type: GrantFiled: April 30, 2018Date of Patent: August 30, 2022Assignee: General Electric CompanyInventors: Sivabalan Mohan, Rejendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker