Patents by Inventor Seong-do Lee

Seong-do Lee 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).

  • Digital signal recording system for recording digital signals on video tape
    Patent number: 5257107
    Abstract: A video signal recording system in a digital VCR wherein an analog composite signal is converted into a digital component signal and the digitally converted signal is recorded on the video cassette tape. The video signal recording system adopts 2-channel, 4-head recording system instead of 2-channel, 2-head of 1/2 inches VHS system, in order to record one frame data on eight video tracks. The number of rotations of the head drum is 3600 rpm.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: October 26, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-ha Hwang, Seong-do Lee