Dynamic magnetic information storage or retrieval – Record editing
Patent
1984-03-09
1986-08-05
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
Record editing
360 103, 360 721, 358312, 358323, G11B 500, H04N 5782
Patent
active
046046569
ABSTRACT:
A tape stop position detecting apparatus for a magnetic video reproducing apparatus in which four kinds of pilot signals (f.sub.1 to f.sub.4) recorded in a magnetic tape together with a video signal are reproduced from the magnetic tape comprises a comparing circuit (301), a region signal generating circuit (401) and a position signal generating circuit (402). The comparing circuit (301) compares the amounts of two signals (f.sub.1 and f.sub.3) to generate a comparison output (S9). The region signal generating circuit (401) operates in response to the comparison output (S9) to generate signals (O1 and O2) indicating in which region the stop position of the magnetic tape is located. The position signal generating circuit (402) operates in response to the comparison output (S9) and a head selecting signal (HSW) to generate a signal (O3) indicating the stop position of the magnetic tape. By the above described signals (O1 to O3), the stop position of the magnetic tape can be detected.
REFERENCES:
patent: 4056832 (1977-11-01), de Boer
patent: 4297733 (1981-10-01), Sanderson
patent: 4443823 (1984-04-01), Sakamoto
patent: 4550345 (1985-10-01), Terada et al.
Mitsubishi Denki & Kabushiki Kaisha
Richardson Robert L.
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