| 摘要 |
Insert and assemble editing of video signals are carried out using a VTR having helically scanning rotary record/playback heads. Following the recording of a first video signal in slant tracks on the tape, the tape is stopped at an edit point where recording of a second video signal is to commence. Then the tape is run reversely while control signals associated with the locations of the tracks are reproduced. These control signals are counted and the tape is stopped when a predetermined number of such signals have been counted. Thereafter the tape is advanced to a noiseless-still-picture position, based on a counted number of oscillations associated with rotation of the tape capstan, at which an acceptably noise-free picture is obtained, notwithstanding that the head scan of the rotary heads does not completely coincide with the slant tracks when the tape is stopped. After this, the tape is run at normal speed, and when the tape reaches the edit point, the VTR begins to record the second signal, which is at that time in step with the previously-recorded first video signal. |
