Patents by Inventor Junghwon Choi

Junghwon Choi 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).

  • Laser projector and method of compensating brightness of the same
    Patent number: 9451224
    Abstract: A laser projector includes a drive signal generation unit for processing an input image signal to generate a laser drive signal and a scanner drive signal, a pixel position detection unit for detecting positions of pixels corresponding to a one-frame image from the generated scanner drive signal, a compensation value decision unit for deciding a brightness compensation value corresponding to the detected pixels, a compensation unit for compensating a laser drive signal corresponding to the detected pixels according to the decided brightness compensation value, a laser light source for generating laser light according to the compensated laser drive signal, and a scanner for scanning the laser light according to the scanner drive signal.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: September 20, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Junghoon Seo, Junghwon Choi, Yongki Kim, Jaewook Kwon
  • LASER PROJECTOR AND METHOD OF COMPENSATING BRIGHTNESS OF THE SAME
    Publication number: 20120120116
    Abstract: A laser projector includes a drive signal generation unit for processing an input image signal to generate a laser drive signal and a scanner drive signal, a pixel position detection unit for detecting positions of pixels corresponding to a one-frame image from the generated scanner drive signal, a compensation value decision unit for deciding a brightness compensation value corresponding to the detected pixels, a compensation unit for compensating a laser drive signal corresponding to the detected pixels according to the decided brightness compensation value, a laser light source for generating laser light according to the compensated laser drive signal, and a scanner for scanning the laser light according to the scanner drive signal.
    Type: Application
    Filed: February 24, 2011
    Publication date: May 17, 2012
    Inventors: Junghoon Seo, Junghwon Choi, Yongki Kim, Jaewook Kwon