Patents Assigned to Engineering, Ltd.
  • Auto-tracking method and apparatus of a magnetic recording/reproducing apparatus
    Patent number: 4613914
    Abstract: An auto-tracking method and apparatus of a helical scan type magnetic recording/reproducing apparatus wherein envelope levels of reproduced signals are detected and the running phase of a magnetic tape is controlled so that the envelope level of the reproduced signal becomes maximum after detection is effected roughly and then finely, thereby allowing a video head to scan a track on the magnetic tape.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: September 23, 1986
    Assignees: Hitachi Microcomputer Hitachi, Ltd., Engineering, Ltd.
    Inventors: Yasunori Kobori, Hideo Nishijima, Kaneyuki Okamoto, Isao Fukushima, Katsuhiko Goto, Takashi Takahashi