| 摘要 |
A video magnetic tape control time code reading method and apparatus employs a control time code comprising binary coded times and frame numbers which together form addresses of individual frames of a video signal recorded on a video magnetic tape which can be read, independently of the direction and speed of transport of the video tape, to ascertain whether the control time code corresponds to a recorded video signal having a frame frequency of 30 or 25 frames per second. Use is made of the fact that certain frame numbers occur in a 30 frame per second control time code which do not occur in a 25 frame per second control time code.
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