Tape apparatus including means to count length-related pulses fo

Details Tape apparatus including means to count length-related pulses fo Tape apparatus including means to count length-related pulses fo

1974-07-24

1976-02-17

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

Record editing

360 72, 360 85, G11B 2702, G11B 2730, H04N 5795

Patent

active

039394913

ABSTRACT:
Video tape apparatus using a cassette with a tape running between reels. A short loop of tape is drawn out and follows a path past an erase head. This short path offers low friction and permits fast tape movement in Fast Forward and Rewind modes while allowing the erase head to pick up tape synchronizing pulses. A counter counts these pulses to indicate the length of tape passing the head during the count, thus facilitating reaching a predetermined point quickly for editing tape. The short loop also more correctly aligns the tape to facilitate withdrawing it from either reel and feeding it onto the other. At slower tape speed for Playback and Record modes, pulses to be counted can be derived from the video signal, from a control head, or from a generator that responds to speed of the recording head shaft.

REFERENCES:
patent: 3541271 (1970-11-01), Joslow
patent: 3647951 (1972-03-01), Rose
patent: 3674942 (1972-07-01), Sugaya et al.
patent: 3852814 (1974-12-01), Johnson et al.

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