Apparatus for recording video signals on rotary recording medium with appropriate angular phase in rapid response to start of rotation.

摘要

An apparatus for recording video signals on a rotary recording medium (42) includes a rotation control unit (44, 50, 54, 68, 70) responsive to a start instruction for rotating the rotary recording medium (42) and for constantly rotating the medium (42) at a rotary speed within a predetermined range, a recording unit (40,38,34,90) for recording video signals on the rotary recording medium (42) while the medium (42) is rotating, a reference position detecting unit (56,130) for detecting a reference position in the rotation of the recording medium (42) to produce a first signal (PG), a recording control unit (76,80,60,132, 18) for controlling the recording unit (40,38,34,90) at two selectable timings with respect to the first signal (PG) to cause the recording unit (40,38,34,90) to record video signals on the rotary recording medium (42), and a timing select unit (130, 132) for determining whether the first signal (PG) is delayed or advanced with respect to a reference signal (REF) to select one of the two timings. The rotation control unit (44, 50,54,68,70) determines when the rotary speed of the rotary recording medium (42) is within the predetermined range to produce a second signal (75). The timing select unit (130, 132) selects an earlier timing from the two timings when the first signal (PG) is advanced and selects a later timing therefrom when the first signal (PG) is delayed. The recording control unit (44,50,54,68,70), on receiving the first signal (PG) after the second signal (75) is generated, records the video signals at the selected timing.