Digital signal reproducing apparatus

Details Digital signal reproducing apparatus Digital signal reproducing apparatus

1990-09-18

1992-10-20

Smith, Jerry

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 8, 360 51, 360 7308, G11B 552, G11B 509

Patent

active

051575612

ABSTRACT:
In a digital signal reproducing apparatus having a head on a rotating drum for reproducing a digital signal which includes information data and which was recorded on a magnetic tape running at a speed different from the tape speed during reproducing of the digital signal therefrom; the tape speed and the drum rotation speed are detected during reproducing and corresponding tape speed and drum speed signals, resectively, are generated, a clock signal is formed from the digital signal reproduced by the head and is used in decoding the information data from the reproduced digital signal, and a control device receives the tape speed and drumspeed signals for controlling the drum speed in accordance with the tape speed when the tape speed is at least as large as a first value and for maintaning a fixed drum speed while changing the clock signal in accordance with the tape speed when the tape speed is at least as large as a second value greater than the first value.

REFERENCES:
patent: 4764824 (1988-08-01), Tani et al.
patent: 5045954 (1991-09-01), Oishi et al.

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