Method and system for reading data that is unreadable by a tape

Details Method and system for reading data that is unreadable by a tape Method and system for reading data that is unreadable by a tape

1997-10-01

1999-10-19

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7713, 360 76, 360 7712, G11B 2102

Patent

active

059698985

ABSTRACT:
A method and system for reading data containing errors due to curved or displaced tracks in a track region reproduced by reproducing heads in a tape drive includes a signal processing circuit for sensing a first set of parameters associated with the data at a first head position at predetermined points along each track in the region. The signal processing circuit also senses a second set of parameters associated with the data at a second head position different from the first head position at the predetermined points along each track in the region. A movable head controller positions the reproducing heads to follow the curved or displaced tracks based on the first and second head positions and the first and second set of parameters.

REFERENCES:
patent: 4688109 (1987-08-01), Sangu
patent: 5191491 (1993-03-01), Zweighaft
patent: 5349481 (1994-09-01), Kauffman et al.
patent: 5521769 (1996-05-01), Suga et al.
Azuma et al., "Microprocessor Controlled Variable Play-Back Speed System for Video Tape Recorder", IEEE Transactions on Consumer Electronics, vol. CE-26, pp. 121-122, Feb. 1980.

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