Patents Assigned to POWER CHIPS CO., LTD.
  • Patent number: 9072141
    Abstract: A driving circuit for a light emitting diode lighting apparatus includes a driving data memory device in which central portion driving data for driving the light emitting diodes are separated into many sections within one cycle of the driving power; a drive controller for reading the central driving data, charging driving data, and outer driving data stored in the driving data memory device; a first D/A converter for converting digital central driving data and outer driving data output from the drive controller to analog signals, and a second D/A converter for converting charging driving data to an analog signal; a static current driving device having static current driving devices respectively connected to tabs of light emitting diodes according to an output signal of the first D/A converter; and a charging static current driving device for charging the charging capacitor according to the output signal from the second D/A converter.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: June 30, 2015
    Assignee: POWER CHIPS CO., LTD.
    Inventor: Soung Hwi Park
  • Patent number: 9072145
    Abstract: The present invention relates to a light-emitting diode (LED) driving circuit for lighting, which divides a specific pattern of driving data for a number of sections within one period or a half period of driving power, stores the divided data in a driving data storage device, and drives LEDs connected in series in an LED array unit using the driving data so as to drive the LEDs with high efficiency, a high power factor, and low total harmonic distortion (HTD).
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: June 30, 2015
    Assignee: POWER CHIPS CO., LTD.
    Inventor: Soung Hwi Park
  • Publication number: 20130207557
    Abstract: The present invention relates to a light-emitting diode (LED) driving circuit for lighting, which divides a specific pattern of driving data for a number of sections within one period or a half period of driving power, stores the divided data in a driving data storage device, and drives LEDs connected in series in an LED array unit using the driving data so as to drive the LEDs with high efficiency, a high power factor, and low total harmonic distortion (HTD).
    Type: Application
    Filed: March 7, 2011
    Publication date: August 15, 2013
    Applicant: POWER CHIPS CO., LTD.
    Inventor: Soung Hwi Park