Patents by Inventor Beom Jun Ju

Beom Jun Ju 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).

  • Channel down mixing apparatus for car audio system
    Patent number: 7266206
    Abstract: The present invention relates to a channel down mixing apparatus for a car audio system for reducing manufacture cost and switching noise by implementing a sub-woofer down mixing portion, a buffer portion and a switching circuit portion to one body with an application of simple circuit elements thereto.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: September 4, 2007
    Assignee: Hyundai Autonet Co., Ltd.
    Inventor: Beom-Jun Ju
  • Power supply device having overcurrent protection function and method for controlling the same
    Patent number: 6970338
    Abstract: By using a plurality of diodes and resistors, an overcurrent protector is implemented in a power supply device that supplies drive power to a peripheral device. The overcurrent protector blocks drive power from a power supply source from being supplied to the peripheral device when an overcurrent is applied from the power supply device to the peripheral device. The diodes and resistors are incorporated into the power supply device to form the circuit thereof. Since the power supply device is not added with a separate circuit for preventing an overcurrent from being applied to the peripheral device, there is no increase in the cost due to additional parts used for implementing the separate circuit. Since a smaller number of parts are used to implement the overcurrent protector, it is easy to design the device, while preventing a decrease in the reliability due to errors in the additional parts.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: November 29, 2005
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Beom Jun Ju
  • Channel down mixing apparatus for car audio system
    Publication number: 20050084119
    Abstract: The present invention relates to a channel down mixing apparatus for a car audio system for reducing manufacture cost and switching noise by implementing a sub-woofer down mixing portion, a buffer portion and a switching circuit portion to one body with an application of simple circuit elements thereto.
    Type: Application
    Filed: December 3, 2003
    Publication date: April 21, 2005
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventor: Beom-Jun Ju
  • Power supply device having overcurrent protection function and method for controlling the same
    Publication number: 20040201936
    Abstract: By using a plurality of diodes and resistors, an overcurrent protector is implemented in a power supply device that supplies drive power to a peripheral device. The overcurrent protector blocks drive power from a power supply source from being supplied to the peripheral device when an overcurrent is applied from the power supply device to the peripheral device. The diodes and resistors are incorporated into the power supply device to form the circuit thereof. Since the power supply device is not added with a separate circuit for preventing an overcurrent from being applied to the peripheral device, there is no increase in the cost due to additional parts used for implementing the separate circuit. Since a smaller number of parts are used to implement the overcurrent protector, it is easy to design the device, while preventing a decrease in the reliability due to errors in the additional parts.
    Type: Application
    Filed: November 10, 2003
    Publication date: October 14, 2004
    Applicant: HYUNDAI MOBIS Co., Ltd.
    Inventor: Beom Jun Ju