Patents by Inventor Hirohisa Okamura

Hirohisa Okamura 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).

  • Battery pack and battery capacity calculating method
    Patent number: 8299759
    Abstract: A battery pack includes: at least one secondary battery; a first terminal and a second terminal to perform charge and discharge; a discharge control switch controlled by a first control signal, for turning on/off a discharge current; a charge control switch controlled by a second control signal, for turning on/off a charging current; and a control section to detect a voltage, a current, and a temperature of the secondary battery, control the charge control switch and the discharge control switch by outputting the first control signal and the second control signal in accordance with the voltage, the current, and the temperature of the secondary battery, and calculate a battery capacity of the secondary battery. The control section calculates the battery capacity of the secondary battery by different methods in accordance with respective cases where the secondary battery is being charged, being discharged, and in a fully charged state.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: October 30, 2012
    Assignee: Sony Corporation
    Inventor: Hirohisa Okamura
  • BATTERY PACK AND BATTERY CAPACITY CALCULATING METHOD
    Publication number: 20100201323
    Abstract: A battery pack includes: at least one secondary battery; a first terminal and a second terminal to perform charge and discharge; a discharge control switch controlled by a first control signal, for turning on/off a discharge current; a charge control switch controlled by a second control signal, for turning on/off a charging current; and a control section to detect a voltage, a current, and a temperature of the secondary battery, control the charge control switch and the discharge control switch by outputting the first control signal and the second control signal in accordance with the voltage, the current, and the temperature of the secondary battery, and calculate a battery capacity of the secondary battery. The control section calculates the battery capacity of the secondary battery by different methods in accordance with respective cases where the secondary battery is being charged, being discharged, and in a fully charged state.
    Type: Application
    Filed: January 14, 2010
    Publication date: August 12, 2010
    Applicant: Sony Corporation
    Inventor: Hirohisa OKAMURA
  • Battery pack apparatus and method of controlling battery pack apparatus
    Patent number: 7710070
    Abstract: A battery pack apparatus is provided. The battery pack includes a battery, a circuit board connected to the battery, and a detecting unit on the circuit board configured to detect a battery power line of the battery detached from the circuit board by detecting a battery voltage drop.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: May 4, 2010
    Assignee: Sony Corporation
    Inventors: Yasushi Mori, Hirohisa Okamura
  • BATTERY PACK APPARATUS AND METHOD OF CONTROLLING BATTERY PACK APPARATUS
    Publication number: 20080166627
    Abstract: A battery pack apparatus is provided. The battery pack includes a battery, a circuit board connected to the battery, and a detecting unit on the circuit board configured to detect a battery power line of the battery detached from the circuit board by detecting a battery voltage drop.
    Type: Application
    Filed: March 6, 2007
    Publication date: July 10, 2008
    Inventors: Yasushi Mori, Hirohisa Okamura