Video signal reproducing apparatus with a track searching arrangement
Video signal reproducing apparatus with a manually controlled track searching arrangement Patent #: 4161001
ApplicationNo. 06/309026 filed on 10/06/1981
US Classes:386/80, Automatic control of the speed of the medium360/128, Head accessory360/129, Housing360/137, MISCELLANEOUS386/82Disc
ExaminersPrimary: Konick, Bernard
Assistant: McElheny, Donald Jr.
Attorney, Agent or Firm
International ClassesG11B 15/10 (20060101)
G11B 15/18 (20060101)
G11B 19/16 (20060101)
Foreign Application Priority Data1980-10-06 JP
AbstractA mode selecting device for a video tape reproducing apparatus of the type in which a magnetic tape is transported past rotary magnetic heads, includes a control shaft adapted to rotate about an axis, a control knob connected to the upper end of the control shaft for manually controlling the rotation of the control shaft, a photo-disk rotatable with the control shaft, a pair of photo-detectors associated with the photo-disk for detecting the rotational speed, the angular position and the direction of rotation of the control shaft about the axis, a latch mechanism for maintaining the control shaft in either a first or second axial position along the axis and for effecting successive change-overs between the first and second axial positions in response to successive depressions of the control knob, the speed of movement of the tape being controlled in response to the detection of the angular position when the control shaft is maintained in the first axial position and the speed of movement of the tape being controlled in response to the detection of the rotational speed when the control shaft is maintained in the second axial position.