Patents by Inventor Byung-gul Lim

Byung-gul Lim 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).

  • Publication number: 20230273451
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Application
    Filed: November 8, 2022
    Publication date: August 31, 2023
    Inventors: Chul Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 11520163
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: December 6, 2022
    Assignee: RealD Inc.
    Inventors: Chui Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Publication number: 20210088806
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Application
    Filed: December 9, 2020
    Publication date: March 25, 2021
    Inventors: Chul Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 10914965
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: February 9, 2021
    Assignee: RealD Inc.
    Inventors: Chui Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 10291906
    Abstract: The present invention relates to a stereoscopic image device and a method for providing a stereoscopic image and, more specifically, to a stereoscopic image device and a method capable of providing a stereoscopic image, which can provide high-quality stereoscopic image by using two projectors and devices related thereto.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: May 14, 2019
    Assignee: RealD Inc.
    Inventors: Byung Gul Lim, Sung Ho Cho, Chul Woo Lee
  • Publication number: 20190011719
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Application
    Filed: April 5, 2018
    Publication date: January 10, 2019
    Inventors: Chul Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 9958697
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: May 1, 2018
    Assignee: RealD Inc.
    Inventors: Chul Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Publication number: 20160301920
    Abstract: The present invention relates to a stereoscopic image device and a method for providing a stereoscopic image and, more specifically, to a stereoscopic image device and a method capable of providing a stereoscopic image, which can provide high-quality stereoscopic image by using two projectors and devices related thereto.
    Type: Application
    Filed: December 29, 2014
    Publication date: October 13, 2016
    Applicant: MASTERIMAGE 3D Asia, LLC.
    Inventors: Byung Gul LIM, Sung Ho CHO, Chul Woo LEE
  • Publication number: 20150103318
    Abstract: A stereoscopic image apparatus that is capable of minimizing loss of optical energy and improving quality of a stereoscopic image is disclosed. The stereoscopic image apparatus includes a polarizing beam splitter to reflect or transmit incident light based on polarization components of the light to split the light in at least three different directions, a reflective member to reflect the light reflected by the polarizing beam splitter to a screen, at least one modulator to modulate the light reflected by the reflective member and the light transmitted through the polarizing beam splitter, and a refractive member disposed in an advancing direction of light to be incident upon the polarizing beam splitter to refract the light to be incident upon the polarizing beam splitter.
    Type: Application
    Filed: March 26, 2014
    Publication date: April 16, 2015
    Applicant: MASTERIMAGE 3D Asia, LLC.
    Inventors: Chul Woo Lee, Sung Ho Cho, Byung Gul Lim
  • Patent number: 6108791
    Abstract: A password processing apparatus and method is provided in which a generic password or master password, in addition to an actual password, is written and verified by using an external memory device. The password processing apparatus includes an internal memory for storing an input password and a condition to read or record a generic password, a detachable storing medium, and an adaptor for writing data to and reading data from the detachable storage medium. A controller stores the password and the condition to read or record the generic password in the memory, stores the generic password in the storage medium according to the condition if the storage medium is connected to the adaptor, and compares the generic password stored in the storage medium with an input password if the input password is different from the password stored in the memory.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: August 22, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-chul Lee, Byung-gul Lim
  • Patent number: 5951178
    Abstract: A keyboard is provided having a lower frame with an elastic member installed on the surface thereof. An elevation plate is installed on the lower frame capable of ascending or descending by an elastic force of the elastic member. A pair of guide plates are separately installed above the elevation plate capable of moving toward or away from each other in a horizontal direction and having a plurality of key holes and guides. Switch units are respectively installed on the lower frame, above the elevation plate and on the bottom surface of the guide plate, and a linkage of key pad assemblies are each installed, capable of compressing or extending by being guided by a guide of the guide plate and having a key for operating a switch of the switch unit directly or by inserting in a key hole of the guide plate.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: September 14, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Byung-gul Lim