Patents by Inventor Masanori Ohira

Masanori Ohira 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 detecting circuit and battery device using same
    Patent number: 7639049
    Abstract: A voltage detecting circuit included in a battery device includes an input voltage comparing circuit that compares a first threshold value voltage or a second threshold value voltage lower than the first threshold value voltage with an input voltage to control the opening and closing of an output switching element, and a threshold value voltage setting circuit that compares a third threshold value voltage lower than the second threshold value voltage with the input voltage and, when the input voltage changes from a low voltage to a high voltage and intersects the third threshold value voltage, outputs a pulse for a predetermined period thereafter so that the second threshold value is selected in the input voltage comparing circuit. As a result, when the input voltage increases from the ground potential, the second threshold value is compared with the input voltage in the input voltage comparing circuit.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: December 29, 2009
    Assignee: Rohm Co. Ltd.
    Inventor: Masanori Ohira
  • VOLTAGE DETECTING CIRCUIT AND BATTERY DEVICE USING SAME
    Publication number: 20090039921
    Abstract: A voltage detecting circuit included in a battery device includes an input voltage comparing circuit that compares a first threshold value voltage or a second threshold value voltage lower than the first threshold value voltage with an input voltage to control the opening and closing of an output switching element, and a threshold value voltage setting circuit that compares a third threshold value voltage lower than the second threshold value voltage with the input voltage and, when the input voltage changes from a low voltage to a high voltage and intersects the third threshold value voltage, outputs a pulse for a predetermined period thereafter so that the second threshold value is selected in the input voltage comparing circuit. As a result, when the input voltage increases from the ground potential, the second threshold value is compared with the input voltage in the input voltage comparing circuit.
    Type: Application
    Filed: October 3, 2008
    Publication date: February 12, 2009
    Applicant: ROHM CO., LTD.
    Inventor: Masanori OHIRA
  • Voltage detecting circuit and battery device using same
    Patent number: 7446574
    Abstract: A voltage detecting circuit included in a battery device includes an input voltage comparing circuit that compares a first threshold value voltage or a second threshold value voltage lower than the first threshold value voltage with an input voltage to control the opening and closing of an output switching element, and a threshold value voltage setting circuit that compares a third threshold value voltage lower than the second threshold value voltage with the input voltage and, when the input voltage changes from a low voltage to a high voltage and intersects the third threshold value voltage, outputs a pulse for a predetermined period thereafter so that the second threshold value is selected in the input voltage comparing circuit. As a result, when the input voltage increases from the ground potential, the second threshold value is compared with the input voltage in the input voltage comparing circuit.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: November 4, 2008
    Assignees: Rohm Co., Ltd., Magna Car Top Systems GmbH
    Inventor: Masanori Ohira
  • Voltage Detecting Circuit and Battery Device Using Same
    Publication number: 20080061841
    Abstract: A voltage detecting circuit included in a battery device includes an input voltage comparing circuit that compares a first threshold value voltage or a second threshold value voltage lower than the first threshold value voltage with an input voltage to control the opening and closing of an output switching element, and a threshold value voltage setting circuit that compares a third threshold value voltage lower than the second threshold value voltage with the input voltage and, when the input voltage changes from a low voltage to a high voltage and intersects the third threshold value voltage, outputs a pulse for a predetermined period thereafter so that the second threshold value is selected in the input voltage comparing circuit. As a result, when the input voltage increases from the ground potential, the second threshold value is compared with the input voltage in the input voltage comparing circuit.
    Type: Application
    Filed: February 15, 2005
    Publication date: March 13, 2008
    Applicant: ROHM CO., LTD.
    Inventor: Masanori Ohira