Patents by Inventor Jong-chui Choi

Jong-chui 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).

  • Publication number: 20180284841
    Abstract: An electronic device having a detachable layered accessory case includes a communication unit, and a layered accessory case capable of being coupled to or separated from the electronic device, wherein the layered accessory case includes a first case configured to cover at least a portion of the electronic device, and a second case configured with a layered structure in the first case. A communication functional unit is capable of delivering a signal with respect to the communication unit, and may be disposed in one or both of the first case and the second case.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 4, 2018
    Inventors: Jae-Wook LEE, Sangpil KIL, Jung-Hun KIM, Young Ho RHEE, Jong-Chui CHOI
  • Publication number: 20080062486
    Abstract: Provided are an apparatus for retroreflecting reference beams and a holographic information recording/reproducing device employing the same. The apparatus for retroreflecting reference beams for use in a holographic information recording/reproducing device for recording/reproducing information on/from a holographic recording medium includes a lens focusing reference beams transmitted through the holographic recording medium at different incident angles with respect to the holographic recording medium to form spots at different positions in a focal plane; and a mirror disposed at the focal plane and retroreflecting the spots created by the lens toward the holographic recording medium.
    Type: Application
    Filed: April 10, 2007
    Publication date: March 13, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Taek-seong Jeong, Jong-chui Choi, Moon-il Jung