Magnetic playback apparatus and method

Details Magnetic playback apparatus and method Magnetic playback apparatus and method

1997-03-10

1999-07-13

Edun, Muhammad

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 51, G11B 2104

Patent

active

059234890

ABSTRACT:
A magnetic playback apparatus and method with which a PLL phase-locked to played-back data operates stably even when the magnetic tape on which the data is recorded is transported at a high speed of several hundred times the recording speed. During high-speed playback of a magnetic tape, the speed of the magnetic tape is detected and using this tape speed information the free-run frequency of a PLL 2 is corrected in correspondence with the azimuth angles of magnetic heads HO, HE. The rotational period of a drum servo 3 is also corrected using the tape speed information.

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patent: 5021896 (1991-06-01), Horino
patent: 5157561 (1992-10-01), Makise et al.
patent: 5392163 (1995-02-01), Higuchi et al.
patent: 5473588 (1995-12-01), Tanaka et al.
patent: 5523896 (1996-06-01), Park

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