Reproducing a recording from a rotary head type tape recorder wi

Details Reproducing a recording from a rotary head type tape recorder wi Reproducing a recording from a rotary head type tape recorder wi

1988-11-18

1991-02-05

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7715, 360 7305, G11B 15467, G11B 553

Patent

active

049910353

ABSTRACT:
A method of reproducing using a rotary head type tape recorder. The method is based on the detection or reproduction of a synchronizing signal of each ATF area which has been recorded and formed at the starting and terminal ends of each track of a magnetic tape. Crosstalk components of pilot signals from two tracks adjacent to a trace track are sampled, thereby to control a reproducing tracking according to an area division type ATF method. When reproducing the magnetic tape which has been recorded in a long-time mode, in which the tape travelling speed and the drum revolution speed are respectively set to 1/2 of the standard travelling speed and to 1/2 of the standard revolution speed, the tape travelling speed is set to 1/2 of the standard travelling speed (i.e., a travelling speed determined for the long-time mode), and the drum revolution speed is set to the standard revolution speed (i.e., a speed double of the revolution speed determined for the long-time mode). For every continuous two traces, the sampling is stopped for the ATF area at the terminal end of the succeeding trace, and the sampling is also stopped for the next continuous two traces. When reproducing the tape in the long-time mode, a high-precision tracking control is achieved to assure a good reproduction.

REFERENCES:
patent: 4839755 (1989-06-01), Yamada et al.
"Technology of Television-Ser. No. 427", Denshi Gijyutsu Syuppan Co., Ltd., Apr. 1987, pp. 109-117.
"Electronics Life", Nippon Housou Shuppan Kyoukai, Mar. 1987, pp. 11-66.

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