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).

  • Publication number: 20250132608
    Abstract: 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: Application
    Filed: December 24, 2024
    Publication date: April 24, 2025
    Inventors: Suma Memana Narayana BHAT, Somakumar RAMACHANDRAPANICKER, Arun Kumar RAGHUNATHAN, Viswanathan KANAKASABAI, Deepak ARAVIND
  • Publication number: 20250118992
    Abstract: 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: Application
    Filed: December 17, 2024
    Publication date: April 10, 2025
    Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
  • Patent number: 12261453
    Abstract: 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: Grant
    Filed: March 28, 2022
    Date of Patent: March 25, 2025
    Assignee: Dolby Laboratories Inc.
    Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
  • Publication number: 20250047147
    Abstract: 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: Application
    Filed: August 16, 2024
    Publication date: February 6, 2025
    Inventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
  • Patent number: 12218520
    Abstract: 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: Grant
    Filed: March 16, 2018
    Date of Patent: February 4, 2025
    Assignee: Dolby Laboratories Inc.
    Inventors: Suma Memana Narayana Bhat, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Viswanathan Kanakasabai, Deepak Aravind
  • Patent number: 12212151
    Abstract: 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: Grant
    Filed: September 18, 2023
    Date of Patent: January 28, 2025
    Assignee: Dolby Laboratories Inc.
    Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
  • Patent number: 12074462
    Abstract: 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: Grant
    Filed: August 16, 2022
    Date of Patent: August 27, 2024
    Assignee: GE Intellectual Property Licensing, LLC
    Inventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
  • Publication number: 20240266880
    Abstract: 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: Application
    Filed: April 17, 2024
    Publication date: August 8, 2024
    Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
  • Publication number: 20240047133
    Abstract: 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: Application
    Filed: October 23, 2023
    Publication date: February 8, 2024
    Inventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
  • Publication number: 20240006917
    Abstract: 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: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
  • Patent number: 11798737
    Abstract: 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: Grant
    Filed: December 3, 2021
    Date of Patent: October 24, 2023
    Assignee: General Electric Company
    Inventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
  • Publication number: 20230327491
    Abstract: 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: Application
    Filed: June 16, 2023
    Publication date: October 12, 2023
    Inventors: Suma Memana Narayana Bhat, Viswanathan Kanakasabai, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
  • Patent number: 11764609
    Abstract: 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: Grant
    Filed: March 29, 2022
    Date of Patent: September 19, 2023
    Assignee: General Electric Company
    Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
  • Publication number: 20230268775
    Abstract: 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: Application
    Filed: April 26, 2023
    Publication date: August 24, 2023
    Inventors: Sivabalan Mohan, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Rajendra Naik, Adnan Kutubuddin Bohori
  • Patent number: 11689056
    Abstract: 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: Grant
    Filed: May 21, 2018
    Date of Patent: June 27, 2023
    Assignee: General Electric Company
    Inventors: Suma Memana Narayana Bhat, Viswanathan Kanakasabai, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
  • Patent number: 11641134
    Abstract: 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: Grant
    Filed: March 19, 2018
    Date of Patent: May 2, 2023
    Assignee: General Electric Company
    Inventors: Sivabalan Mohan, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Rajendra Naik, Adnan Kutubuddin Bohori
  • Patent number: 11616399
    Abstract: 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: Grant
    Filed: April 19, 2018
    Date of Patent: March 28, 2023
    Assignee: General Electric Company
    Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
  • Patent number: 11588349
    Abstract: 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: Grant
    Filed: April 19, 2018
    Date of Patent: February 21, 2023
    Assignee: General Electric Company
    Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
  • Publication number: 20220393519
    Abstract: 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: Application
    Filed: August 16, 2022
    Publication date: December 8, 2022
    Inventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
  • Patent number: 11431198
    Abstract: 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: Grant
    Filed: April 30, 2018
    Date of Patent: August 30, 2022
    Assignee: General Electric Company
    Inventors: Sivabalan Mohan, Rejendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker