Patents by Inventor Kyungyong Cheon

Kyungyong Cheon 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).

  • Backup power-supply system for emergency
    Patent number: 5585677
    Abstract: The present invention discloses a backup power-supply system for emergency that may apply power to a data processing system and recover the information in it when the power supply is cut off or a power-supply connector is abruptly removed due to a careless user, so as to prevent the damage to the information the user is working on.When the power is applied to the system, a battery is charged with the direct current power applied from a linear conversion rectifier by a battery charger, and when the power is not applied to the system while a power switch is being turned on, a DC/DC converter is operated by a power controller to apply the DC power charged in the battery to the main power-supply system after the direct current has been converted into DC/DC power in such a manner that the main power-supply means applies to the system the power for recovering the information a user was working on in the system.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: December 17, 1996
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyungyong Cheon, Kyungseol Min, Kyungsang Lee