Patents by Inventor Yoon-Seop Choi

Yoon-Seop 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).

  • Patent number: 7817902
    Abstract: An apparatus and a method of generating a video-reproducing clock signal from a 480p signal. The apparatus generates a video-reproducing clock signal from a 480p signal that includes a vertical synchronization signal, horizontal synchronization signals, and copy guard signals. The apparatus includes a coast signal generating unit and a clock signal generating unit. The coast signal generating unit generates a plurality of coast signals with pulse widths, each of which covers the different number of copy guard signals on the basis of the present copy guard signal in one frame signal of the 480p signal. The clock signal generating unit generates horizontal synchronization signals at the same period as that of the horizontal synchronization signals generated in a previous frame, while the corresponding coast signal is being generated.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: October 19, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yoon-seop Choi
  • Publication number: 20040136691
    Abstract: An apparatus and a method of generating a video-reproducing clock signal from a 480 p signal. The apparatus generates a video-reproducing clock signal from a 480 p signal that includes a vertical synchronization signal, horizontal synchronization signals, and copy guard signals. The apparatus includes a coast signal generating unit and a clock signal generating unit. The coast signal generating unit generates a plurality of coast signals with pulse widths, each of which covers the different number of copy guard signals on the basis of the present copy guard signal in one frame signal of the 480 p signal. The clock signal generating unit generates horizontal synchronization signals at the same period as that of the horizontal synchronization signals generated in a previous frame, while the corresponding coast signal is being generated.
    Type: Application
    Filed: December 24, 2003
    Publication date: July 15, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yoon-Seop Choi
  • Patent number: 6720991
    Abstract: An apparatus for and a method of interfacing an analog video camcorder and a personal computer with each other. A horizontal synchronous signal used for the analog video camcorder is delayed for a desired time in order to prevent a phenomenon in which a picture is displayed on a monitor of the personal computer while having a black portion at the leading portion thereof and being clipped at the trailing portion thereof when using a personal computer interface unit for digital video camcorders. By virtue of the delayed horizontal synchronous signal, the personal computer can receive information from the analog video camcorder without any problem. The apparatus and method are appropriately applied to portable imaging devices.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: April 13, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yoon-Seop Choi