Video tape control time code reading

Details Video tape control time code reading Video tape control time code reading

1978-11-15

1980-11-04

Konick, Bernard

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 722, G11B 1552

Patent

active

042323479

ABSTRACT:
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.

REFERENCES:
patent: 3681524 (1972-08-01), Nicholls
patent: 4037260 (1977-07-01), Busby, Jr. et al.
patent: 4044389 (1977-08-01), Oldershaw et al.
patent: 4134130 (1979-01-01), Tachi
patent: 4167759 (1979-09-01), Tachi

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