Patents by Inventor Janne Klemetti

Janne Klemetti 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).

  • Voltage-based fuel gauge on battery capacity
    Patent number: 9612288
    Abstract: A device to determine a state of a battery is disclosed. One or more transistors provide a resistance between first and second nodes. The one or more transistors are configured to conduct a supply current from a battery between the first node and the second node. A measurement circuit measures the voltage generated between the first node and the second node. The measurement circuit further measures the supply voltage. A calculation circuit generates an estimate of the supply current based on the voltage measured between the first node and the second node and the resistance of the one or more transistors. The calculation circuit generates an estimate of the state of charge of the battery based on the measured supply voltage and the estimate of the supply current.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 4, 2017
    Assignee: Analog Devices Global
    Inventors: Hua-Jung Yang, Janne Klemetti
  • VOLTAGE-BASED FUEL GAUGE ON BATTERY CAPACITY
    Publication number: 20150219721
    Abstract: A device to determine a state of a battery is disclosed. One or more transistors provide a resistance between first and second nodes. The one or more transistors are configured to conduct a supply current from a battery between the first node and the second node. A measurement circuit measures the voltage generated between the first node and the second node. The measurement circuit further measures the supply voltage. A calculation circuit generates an estimate of the supply current based on the voltage measured between the first node and the second node and the resistance of the one or more transistors. The calculation circuit generates an estimate of the state of charge of the battery based on the measured supply voltage and the estimate of the supply current.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 6, 2015
    Inventors: Hua-Jung Yang, Janne Klemetti
  • Electric circuit and transmission method for telemetric transmission
    Patent number: 7418237
    Abstract: The invention relates to an electric circuit for a telemetric transmission. A semiconductor transistor switch switches a quenching circuit into an electrically conductive state to prevent oscillation of a resonance circuit. The semiconductor transistor switch switches the quenching circuit into a state preventing the passage of electric current to enable oscillation of the resonance circuit. The quenching circuit comprises at least one restriction component for preventing the passage of a base current of the semiconductor transistor switch when the semiconductor transistor switch is switched open.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: August 26, 2008
    Assignee: Polar Electro Oy
    Inventor: Janne Klemetti
  • Electric circuit and transmission method for telemetric transmission
    Publication number: 20050135039
    Abstract: The invention relates to an electric circuit for a telemetric transmission. A semiconductor transistor switch switches a quenching circuit into an electrically conductive state to prevent oscillation of a resonance circuit. The semiconductor transistor switch switches the quenching circuit into a state preventing the passage of electric current to enable oscillation of the resonance circuit. The quenching circuit comprises at least one restriction component for preventing the passage of a base current of the semiconductor transistor switch when the semiconductor transistor switch is switched open.
    Type: Application
    Filed: December 13, 2004
    Publication date: June 23, 2005
    Inventor: Janne Klemetti