Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data verification
Patent
1992-10-02
1995-02-28
Hajec, Donald
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data verification
360 70, 360 7712, G11B 509, G11B 2104, G11B 5584
Patent
active
053942779
ABSTRACT:
Servo track pair position and longitudinal tape position are determined for a tape using dedicated servo format. The tape includes at least one set of data tracks and dedicated servo tracks wherein adjacent servo tracks are defined by longitudinal lines through the edges of erased or non-recorded tape portions. The information about servo track pair numbers and/or servo sample numbers is recorded into portions of the tape and is decoded and read back together with signals from the servo track. The information is recorded in a digital manner by using a digital block format of data blocks requiring fewer bytes per block than a data block provided on the data tracks. If information about longitudinal tape position is not required, information may be recorded in an analog manner using a fixed set of predetermined frequencies.
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Pahr Per O.
Solhjell Erik
Strand Steinar J.
Hajec Donald
Tandberg Data A/S
Wamsley Patrick
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