Patents by Inventor Jung-ku Ahn

Jung-ku Ahn 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: 4870507
    Abstract: A tape format of 4-mm wide video tape for use in a video tape recorder adopting helical scanning and azimuth recording methods is disclosed in conjunction with a video tape recorder system thereof, which enables the video tape recorder to achieve the greatest size-reduction and improve the resolution in picture reproducing by raising the S/N ratio of video signals. The tape format includes a video width area for an automatic track finding signal to control the traveling of tape and the video signal consisting of color signals and luminance signals, an option track area for recording audio signals, a first guide area for keeping the minimum part of tape in touch with the upper drum, a second guide area for separating the audio signals of the option track area from the video signals of the video width area, and first and second overlap areas respectively below the first guide area and above the second guide area, provided for overlapping the video signals on the edges of video tracks in recording operation.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: September 26, 1989
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-ku Ahn, Jong-ahn Kim, Jong-Kwan Paik, Hee-Chul Gong