Patents by Inventor Hong-Gie Hwang

Hong-Gie Hwang 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).

  • Method and apparatus for automatically controlling a power of a laser diode
    Patent number: 7492796
    Abstract: A method and apparatus to automatically control an output power of a laser diode, include generating an error voltage between an output voltage of the laser diode sampled during an automatic power control period and a reference voltage, and performing proportional-integral processing on the error voltage to generate a compensated control voltage and applying the compensated control voltage to the laser diode.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: February 17, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hong-gie Hwang
  • Method and apparatus for estimating the volume of toner consumption in consideration of overlapping areas
    Patent number: 7245840
    Abstract: Provided is a method and apparatus for accurately estimating the volume of toner consumption of a laser printer by subtracting the volume of toner consumption corresponding to overlapping areas between adjacent bits of video data sequentially input by the bit from an average volume of toner consumption per bit. The apparatus includes an effective video data generator receiving video data and generating effective video data, a first storing unit receiving and temporarily storing the effective video data, and a toner consumption calculator receiving the effective video data from the first storing unit and calculating the volume of toner consumption per bit. The toner consumption calculator calculates the volume of toner consumption per bit by sequentially receiving the effective video data by the bit and subtracting the volume of toner consumption corresponding to overlapping areas between a bit and its adjacent bits from an average volume of toner consumption per bit.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: July 17, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hong-Gie Hwang
  • Method and apparatus for estimating the volume of toner consumption in consideration of overlapping areas
    Publication number: 20050129419
    Abstract: Provided is a method and apparatus for accurately estimating the volume of toner consumption of a laser printer by subtracting the volume of toner consumption corresponding to overlapping areas between adjacent bits of video data sequentially input by the bit from an average volume of toner consumption per bit. The apparatus includes an effective video data generator receiving video data and generating effective video data, a first storing unit receiving and temporarily storing the effective video data, and a toner consumption calculator receiving the effective video data from the first storing unit and calculating the volume of toner consumption per bit. The toner consumption calculator calculates the volume of toner consumption per bit by sequentially receiving the effective video data by the bit and subtracting the volume of toner consumption corresponding to overlapping areas between a bit and its adjacent bits from an average volume of toner consumption per bit.
    Type: Application
    Filed: December 1, 2004
    Publication date: June 16, 2005
    Inventor: Hong-Gie Hwang
  • Method and apparatus for automatically controlling a power of a laser diode
    Publication number: 20040057476
    Abstract: A method and apparatus to automatically control an output power of a laser diode, include generating an error voltage between an output voltage of the laser diode sampled during an automatic power control period and a reference voltage, and performing proportional-integral processing on the error voltage to generate a compensated control voltage and applying the compensated control voltage to the laser diode.
    Type: Application
    Filed: August 25, 2003
    Publication date: March 25, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Hong-gie Hwang